| OSRAM SYLVANIA INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120132929 | PHOSPHOR BLEND FOR AN LED LIGHT SOURCE AND LED LIGHT SOURCE INCORPORATING SAME - A phosphor blend for an LED light source is provided wherein the phosphor blend comprises from about 7 to about 12 weight percent of a cerium-activated yttrium aluminum garnet phosphor, from about 3 to about 6 weight percent of a europium-activated strontium calcium silicon nitride phosphor, from about 15 to about 20 weight percent of a europium-activated calcium silicon nitride phosphor, and from about 55 to about 80 weight percent of a europium-activated calcium magnesium chlorosilicate phosphor. An LED light source in accordance with this invention has a B:G:R ratio for a 3200 K tungsten balanced color film of X:Y:Z when directly exposed through a nominal photographic lens, wherein X, Y and Z each have a value from 0.90 to 1.10. | 05-31-2012 |
| 20120126253 | PHOSPHOR BLEND FOR AN LED LIGHT SOURCE AND LED LIGHT SOURCE INCORPORATING SAME - There is provided a phosphor blend for an LED light source comprising from about 25 to about 35 weight percent of a cerium-activated yttrium aluminum garnet phosphor, from about 5 to about 10 weight percent of a europium-activated strontium calcium silicon nitride phosphor, and from about 50 to about 75 weight percent of a europium-activated calcium magnesium chlorosilicate phosphor. An LED light source in accordance with this invention has a B:G:R ratio for a 5500 K daylight balanced color film of X:Y:Z when directly exposed through a nominal photographic lens, wherein X, Y and Z each have a value from 0.90 to 1.10. | 05-24-2012 |
| 20120113617 | Luminescent Ceramic Converter and LED Containing Same - There is herein described a luminescent ceramic converter that comprises a flat, monolithic piece of a ceramic material containing a luminescent species wherein a concentration of the luminescent species in a peripheral region of the converter is lower than in a central region of the converter. | 05-10-2012 |
| 20120081902 | Lighting system with daytime running light - A lighting system ( | 04-05-2012 |
| 20120081027 | Full Wave Current Sense Rectifier - A current sense rectifier circuit comprises an assembly input terminal for receiving a current input signal having an alternating current (AC) waveform. A negative half-wave circuit generates a first input signal representative of negative portions of the current input signal. A positive half-wave circuit generates a second input signal representative of positive portions of the current input signal. The negative and positive half-wave circuits each include a single diode and a resistance. A closed-loop amplifier has an inverting input terminal connected to the negative half-wave circuit, and a non-inverting input terminal connected to the positive half-wave circuit. The closed-loop amplifier inverts the first input signal and provides a DC voltage output signal via an output terminal that is a function of the inverted first input signal and the second input signal. An assembly output terminal is connected to the output terminal to receive the DC voltage output signal therefrom. | 04-05-2012 |
| 20120075849 | Lamp assembly and housing therefor - A lamp assembly | 03-29-2012 |
| 20120074855 | Power Splitter Circuit For Electrodeless Lamp - A lamp assembly adapted to operate as one of a total number of lamp assemblies that are connected together in series and connected to a ballast. The lamp assembly comprises an electrodeless, closed-loop, tubular lamp envelope enclosing mercury vapor and a buffer gas, and a transformer core disposed around a portion of the lamp envelope. An input winding is disposed on the transformer core so that it has a particular number of turns, N | 03-29-2012 |
| 20120074831 | LAMP CONNECTORS - Lamp connectors are provided. The lamp connectors include a swinging connector and a rotatable connector. The swinging connector is coupled to a pivot connection point disposed on a first exterior surface of a lamp. The swinging connector is operative to pivot between a first position close in proximity to the lamp and a second position at distance away from the lamp. A portion of the swinging connector may be received and retained by a second exterior surface of the lamp, when the lamp is in the first position. The rotatable connector is attached to an end of a lamp via a rotation mechanism. The rotation mechanism is disposed on the end of the lamp. The rotatable connector includes a surface and a pin protruding therefrom. The pin is offset from a central portion of the end of the lamp. | 03-29-2012 |
| 20120068626 | Auto-Sensing Switching Regulator to Drive A Light Source Through A Current Regulator - An auto-sensing switching regulator, and systems and methods including same, is disclosed. The auto-sensing switching regulator includes a switching regulator and a controller coupled thereto. The controller is configured to provide a control signal to the switching regulator to increase the output voltage while receiving a current sense signal representative of a current output of the switching regulator, and to provide the control signal in response to the current sense signal to set the output voltage at a set value corresponding to a value at which the current output stops increasing with an increase in the output voltage. A system to drive a light source includes a current regulator configured to provide a constant current output to the light source and an auto-sensing switching regulator coupled to the current regulator, and configured to receive an input voltage from a voltage supply and provide an output voltage to the current regulator. | 03-22-2012 |
| 20120068205 | LED LIGHT ENGINE AND METHOD OF MANUFACTURE THEREOF - A light emitting diode (LED) light engine includes a solid transparent dome mounted on one or more LED dies to form a base module, a flexible sheath having embedded therein a phosphor that converts light of a first wavelength range to light of a second wavelength range, the sheath being attached to the base module so that the sheath conforms to a light emitting surface of the dome. The sheath emits light of the second wavelength range when the LED is emitting light of the first wavelength range. Further sheaths may be formed each with different phosphors or phosphor blends, and one of the sheaths may be selected to cover the base module depending on the color of light to be produced by the light engine. | 03-22-2012 |
| 20120062112 | APPARATUS, SYSTEM, AND METHOD OF CONTROLLING IGNITION TIMING OF A HID LAMP USING A THIRD ELECTRODE - A high-intensity discharge (HID) lamp comprising a discharge vessel including a first and a second end region and defining an arc chamber containing an arc generating medium, a cathode and an anode in the first and the second end regions of the discharge vessel, respectively, the cathode and the anode each comprising a terminal end disposed within the arc chamber and separated by an arc gap, and an electrically conductive starting aid configured to initiate a dielectric barrier discharge (DBD) with the anode at or after a voltage across the first and second electrodes reaches an open circuit value. A ballast may control power provided to the HID lamp. | 03-15-2012 |
| 20120056556 | LED-BASED LIGHT SOURCE HAVING DECORATIVE AND ILLUMINATION FUNCTIONS - A light source that generally includes multiple light emitting diode (LED) sources emitting light at different colors. A controller energizes the LED sources for establishing a changing pattern of the light colors to provide a decorative effect while simultaneously establishing white light illumination of a target area. | 03-08-2012 |
| 20120056554 | Solid State Light Source Driving and Dimming Using an AC Voltage Source - Solid state light source driving and dimming systems are provided that enable a plurality of solid state light source (e.g., LED) driver circuits to be coupled to a single AC voltage source. The driver circuits may include constant current circuitry configured to generate a constant AC current from the AC voltage source, and rectifier circuitry configured to generate a DC current to drive the solid state light source (e.g., LEDs). Dimming control includes shunt circuitry operable with a PWM switch to shunt the AC voltage source during certain portions of a PWM signal and to decouple the shunt circuitry from the AC voltage source during other portions of the PWM signal. Shunting the AC voltage source causes the interruption of the DC current to effectively turn off the LEDs. Decoupling the shunt circuitry may improve overall efficiency of power transfer to the LEDs. | 03-08-2012 |
| 20120032612 | THERMAL CONTROL OF SOLID STATE LIGHT SOURCES BY VARIABLE SERIES IMPEDANCE - A thermal protection circuit, and system and method including same, is provided. The circuit includes a variable impedance circuit configured to be coupled to a constant current source and a plurality of solid state light sources. The constant current source provides a current to the plurality of solid state light sources and provides an output voltage to establish a supply voltage for the circuit. The circuit also includes a temperature sensor configured to sense a temperature of the plurality of solid state light sources. The circuit also includes a control circuit configured to receive the supply voltage and to drive the variable impedance circuit based on the sensed temperature, to adjust the current to the plurality of solid state light sources when the supply voltage is a least a minimum supply voltage of the control circuit. | 02-09-2012 |
| 20120032580 | PHOSPHOR BLEND AND FLUORESCENT LAMP CONTAINING SAME - A phosphor blend is described wherein the blend consists of a red-emitting rare earth phosphor, a green-emitting rare earth phosphor, and a blue-emitting rare earth phosphor wherein the 50% size of the phosphors is between about 12 to 15 μm. The phosphor blend is incorporated into a fluorescent lamp having an increased efficacy. A dual layer coating may be used to provide an additional increase in efficacy. | 02-09-2012 |
| 20120025236 | LIGHT EMITTING DIODE SUBSTRATE, METHOD OF MAKING SAME AND LIGHT EMPLOYING SAME - An LED light source ( | 02-02-2012 |
| 20120002423 | Lamp With A Truncated Reflector Cup - A lamp assembly, and method for making same. The lamp assembly includes first and second truncated reflector cups. The lamp assembly also includes at least one base plate disposed between the first and second truncated reflector cups, and a light engine disposed on a top surface of the at least one base plate. The light engine is configured to emit light to be reflected by one of the first and second truncated reflector cups. | 01-05-2012 |
| 20110317413 | OPTICAL ILLUMINATION SYSTEM PRODUCING AN ASYMMETRIC BEAM PATTERN - A light fixture, such as for an overhead street light, is disclosed. A light redirection device ( | 12-29-2011 |
| 20110316419 | Dielectric-Loaded Field Applicator for EHID Lamps and EHID Lamp Assembly Containing Same - A dielectric-loaded field applicator and an EHID lamp assembly are provided wherein the applicator comprises a helical resonator having a cylindrical dielectric core and a helical conductor, the dielectric core having a helical groove extending along its surface substantially from end to end; the helical conductor being contained in the helical groove and connectable at one end to a power source, the dielectric core being comprised of a dielectric material having a relative permittivity greater than about 3, preferably polycrystalline alumina. The EHID lamp assembly includes two opposed dielectric-loaded applicators with a discharge vessel supported between them. | 12-29-2011 |
| 20110310608 | LED LIGHT SOURCE | 12-22-2011 |
| 20110304259 | COILS FOR ELECTRON DISCHARGE DEVICES | 12-15-2011 |
| 20110291592 | Dimmer Conduction Angle Detection Circuit and System Incorporating the Same - A conduction angle detection circuit, and systems and methods incorporating the same, is disclosed. The circuit includes a comparator having a first input and a second input, and configured to provide a pulse-width modulated output in response to comparison of signals at the first input with signals at the second input. The output has a pulse width representative of a dimmer setting of a dimmer circuit. The circuit also includes a limiting circuit coupled to the comparator and configured to receive a rectified voltage and to provide a voltage-limited output in response to the rectified voltage to the first input of the comparator. The circuit also includes a threshold supply circuit configured to provide a threshold voltage to the second input of the comparator, and a filter coupled to the comparator. The filter is configured to convert the pulse-width modulated output of the comparator to the dimmer reference level signal. | 12-01-2011 |
| 20110291577 | Dimmer Conduction Angle Detection Circuit and System Incorporating the Same - A dimmer conduction angle detection circuit, and systems and methods incorporating the same, is disclosed. The circuit receives a gate drive signal from a PFC circuit and provides a dimmer reference level signal representative of a dimmer circuit's dimmer setting in response. The circuit includes a comparator with first and second inputs that provides a pulse-width modulated output in response to comparing signals received at the inputs. The pulse-width modulated output has a pulse width representative of the dimmer circuit's dimmer setting. The circuit also includes an input network, coupled to the comparator, to receive the gate drive signal and to provide an output, in response, to the comparator's first input. The circuit also includes a threshold supply circuit to provide a threshold voltage to the comparator's second input, and a filter, coupled to the comparator, to convert the comparator's pulse-width modulated output to the dimmer reference level signal. | 12-01-2011 |
| 20110291558 | Ceramic Discharge Vessel Having an Opaque Zone and Method of Making Same - An opaque zone in the polycrystalline (PCA) discharge vessel of a high intensity discharge lamp may be made by creating residual pores in predetermined regions of the final-sintered discharge vessel. The control over the placement of the opaque zone is achieved by forming a carbonaceous residue in a specific region of the discharge vessel prior to final sintering. During sintering, the carbonaceous material causes residual porosity in the sintered PCA. The higher emissivity of the opaque PCA provides localized cooling in order to provide more control over the condensate behavior in the discharge vessel. | 12-01-2011 |
| 20110272458 | AUTO-BOTTOM CARTON WITH SELF-ERECTING PARTITION | 11-10-2011 |
| 20110267828 | Thermal Trim for a Luminaire - A luminaire with a thermal pathway to reduce the junction temperature of the luminaire's light source, and methods for so doing, are disclosed. The luminaire includes a can, a light engine, and a trim, that define a substantially continuous thermal pathway from the light engine to a surrounding environment. The can defines a can cavity and includes a can end region. The light engine is within the can cavity and includes a light source and a heat sink, including a heat sink end region, coupled thereto. The trim is at least partially disposed within the can cavity and includes a first trim end region coupled to the heat sink end region and a second trim end region coupled to the can end region. Thermal interface material may be located between: the heat sink and the trim, the trim and the can, and/or the heat sink and the light source. | 11-03-2011 |
| 20110267815 | THERMOSYPHON LIGHT ENGINE AND LUMINAIRE INCLUDING SAME - A thermosyphon light engine and luminaire including the same are provided. The light engine includes a condenser, an evaporation chamber, and a connecting element therebetween. The condenser returns a gaseous substance located therein to a liquid substance. The evaporation chamber includes a solid state light source, a working liquid, and an optical element that beam shapes light emitted by the at least one solid state light source. The solid state light source is immersed in the working liquid, such that heat generated by the solid state light source changes the working liquid into a gaseous substance. The gaseous substance travels through the connecting element to the condenser, which returns the gaseous substance to a liquid substance. The liquid substance then travels through the connecting element back to the evaporation chamber. | 11-03-2011 |
| 20110266978 | LIGHT OUTPUT CONTROL TECHNIQUE BY ESTIMATING LAMP EFFICACY AS A FUNCTION OF TEMPERATURE AND POWER - Techniques are disclosed for controlling the light output of a lamp, where lamp efficacy is estimated as a function of estimated lamp temperature and instantaneous input power, or as a function of estimated lamp temperature only. Whether efficacy is estimated as a function of temperature and power, or as a function of temperature only can depend on changes in the lamp operating scenario. The techniques estimate lamp temperature by tracking energy input to and losses from (losses such as radiation, conduction, emission) the lamp arc tube, and determine the corresponding instantaneous light producing ability. The techniques may further be implemented to deliver the appropriate power command to obtain a desired light output. The techniques can be applied towards a general control in which arbitrary or custom light output vs. time paths are produced, and may be implemented by a processor programmed or otherwise configured to execute the desired control scheme. | 11-03-2011 |
| 20110260638 | REFLECTOR-TYPE LAMP WITH INTEGRATED HEAT DISTRIBUTION AND EMI SHIELDING - Reflector-type lamps and housings with integrated heat distribution and EMI shielding are disclosed. A reflector-type lamp includes a lamp housing having a base portion, a reflector portion, and an integrated heat distribution structure. A light source may be located in a reflector housing region or cavity defined by the reflector portion and integrated electronics may be located in a base housing region or cavity defined by the base portion. In general, the heat distribution structure distributes heat from hot spots in the lamp to exterior locations along the base portion and/or reflector portion. The heat distribution structure may also provide electromagnetic interference (EMI) shielding when EMI is generated within the lamp, for example, in the integrated electronics. | 10-27-2011 |
| 20110241550 | Inrush Current Protection - Methods of protecting an electrical device, such as a ballast, from damage due to an inrush current, and devices incorporating such methods, are disclosed. A loss of input power received by the ballast is detected. In response, the ballast is entered into a standby mode. The ballast is able to remain in the standby mode for a standby period of time. The input power is monitored during the standby period of time to measure a start time. Measurement of the start time is triggered by the ballast receiving input power again. The ballast is entered into an active mode when the measured start time exceeds a protection time. The protection time corresponds to an amount of time needed for an inrush current to dissipate following input power again being received by the ballast, protecting the ballast from possible damage due to the inrush current. | 10-06-2011 |
| 20110228528 | RETROFIT-STYLE LAMP AND FIXTURE, EACH INCLUDING A ONE-DIMENSIONAL LINEAR BATWING LENS - A one-dimensional linear batwing lens, and retrofit-style lamp and fixture including the same, are provided. The one-dimensional linear batwing lens includes a top portion and a bottom portion. The top portion includes a first top spherical surface and a second top spherical surface. The bottom portion includes a first bottom spherical surface and a pair of second bottom spherical surfaces. Thus, the one-dimensional linear batwing lens includes five spherical surfaces. A surface of the bottom portion of the lens faces a light source on which the lens acts. A retrofit-style lamp including the same additionally includes a plurality of light sources, wherein the one-dimensional linear batwing lens beam shapes light emitted by at least one light source of the plurality of light sources. The fixture including the same additionally includes a housing and a power supply. | 09-22-2011 |
| 20110227471 | Integrally ballasted lamp assembly including a spacer disk - An integrally ballasted lamp assembly ( | 09-22-2011 |
| 20110164426 | Free-Form Lens Design to Apodize Illuminance Distribution - A lens that angularly redistributes light from an LED is disclosed. The desired illuminance (power per area) pattern for an LED/lens combination has a relatively flat center, a knee, and a gradual tail. By overlapping adjacent combinations' tails, the resulting illuminance pattern may be generally uniform, with relatively loose tolerances on LED/lens placement and performance. The lens has a proximal face with a concave spherical indentation with its center at the light source. The lens's distal face has a “center thickness” (CT) on-axis, a peak thickness away from a longitudinal axis of about 1.0 to 1.2 times the CT, a radius at which the peak thickness occurs of about 0.5 to 1.0 times the CT, a radius at which the thickness returns to the CT of about 1.1 to 1.5 times the CT, and a radius (maximum lateral extent) of the lens of about 1.6 to 1.9 times the CT. | 07-07-2011 |
| 20110164397 | LED PACKAGE USING PHOSPHOR CONTAINING ELEMENTS AND LIGHT SOURCE CONTAINING SAME - A light-emitting diode package is described comprising a body including a hollow having a rim that extends outwardly from an open end of the hollow. A light emitting diode is positioned in the hollow and opposite the open end. A nongaseous transparent optical medium fills the hollow and a phosphor-containing element (PCE) is disposed over the hollow sealing the open end. The PCE has a solid body and a lateral portion including a periphery and dividing a top and a bottom. The bottom of the PCE is convex and in contact with the nongaseous transparent optical medium and the periphery of the PCE is in contact with the rim. | 07-07-2011 |
| 20110163685 | Lamp End of Life (EOL) Detection Circuit - A lamp driver circuit to selectively energize one or more lamps is provided. The inverter circuit has a transformer with primary and secondary windings to provide voltage to the lamps. A filter is connected to the primary winding to receive a primary winding signal representative of the voltage across the primary winding. The primary winding signal has a frequency spectrum and the filter detects a particular characteristic of the frequency spectrum that is indicative of an end of life (EOL) condition of the one or more lamps. A control circuit is connected to the inverter circuit and to the filter. The control circuit is configured to discontinue energizing of the one or more lamps by the inverter circuit when the particular characteristic of the frequency spectrum of the primary winding signal is detected by the filter. | 07-07-2011 |
| 20110148307 | SYSTEM AND METHOD INCLUDING SELF OSCILLATING FEEDBACK FOR ACOUSTIC OPERATION OF A DISCHARGE LAMP - A system and method including self oscillating feedback for acoustic operation of a discharge lamp. The system includes a ballast configured to receive a modulation input and modulate a lamp power signal in accordance with the modulation input. A photodetector senses the optical output of the lamp to provide an electrical feedback to a feedback circuit. The feedback circuit filters the feedback to couple a portion thereof corresponding to a selected acoustic resonance mode of the lamp to the ballast as the modulation input thereby causing self-oscillation at the selected acoustic resonance mode. | 06-23-2011 |
| 20110141734 | LENS GENERATING A BATWING-SHAPED BEAM DISTRIBUTION, AND METHOD THEREFOR - A lens to redirect light, having an angular distribution centered around a left-right symmetry plane (LRSP), from a light source. The lens includes an incident face, facing the light source, which includes an incident corner, which divides the incident face into incident inner and outer zones and is concave, forming an obtuse angle in air. The lens also includes an opposite exiting face, which similarly includes an exciting corner, which similarly divides the exiting face. Each ray striking the incident inner zone transmits through the lens, striking the exiting inner zone. Each ray striking the incident outer zone transmits through the lens, striking the exiting outer zone. Each ray striking the incident face, transmits through the lens, strikes the exiting face, and refracts out of the lens, has initial and final propagation angles with respect to the LRSP. The final propagation angle is greater than the initial propagation angle. | 06-16-2011 |
| 20110141729 | Retrofit-Style Lamp and Fixture, Each Including a One-Dimensional Linear Batwing Lens - A retrofit-style lamp is disclosed. The retrofit-style lamp includes a plurality of light sources, and a one-dimensional linear batwing lens. The one-dimensional linear batwing lens beam shapes light emitted by at least two light sources of the plurality of light sources. The retrofit-style lamp also includes a housing including the plurality of light sources, and attached to the one-dimensional linear batwing lens. The combination of housing and lens is then itself fitted with endcaps, including electrical connectors, for placement within a fixture, such as within an existing conventional fluorescent tube fixture located within a storage structure, for example a refrigeration case. Alternatively, the plurality of light sources, the one-dimensional linear batwing lens, and the housing may be formed, along with a power supply, as a standalone retrofit fixture for use in enclosed storage structures, such as refrigeration cases, where the retrofit fixture replaces a conventional fluorescent fixture. | 06-16-2011 |
| 20110133664 | Transition Mode Commutation For Inverter - A driver circuit includes a plurality of switches, forming two switching legs, each of at least two switches and connected between two DC voltage buses. The switches are matched to form diagonal pairs. The driver circuit also includes a load circuit connecting the legs, with a first inductor connected between one leg's switches, and a second inductor connected between the other leg's switches, and lamp terminals between the inductors and in series with the second inductor. The driver circuit also includes a capacitor in parallel with the series-connected lamp terminals and the second inductor, and a control circuit connected to the plurality of switches. During a commutation period, a diagonal pair operates in a non-conductive state and the other in a conductive state, until a current through the first inductor reaches a predefined value. Then the other operates in a non-conductive state until the current through the first inductor reaches zero. | 06-09-2011 |
| 20110133222 | LED LAMP WITH REMOTE PHOSPHOR COATING AND METHOD OF MAKING THE LAMP - A light emitting diode (LED) lamp includes a base with one or more LED chips, an internal cover over the LED chips, where the cover is a translucent ceramic whose thermal conductivity is greater than glass, where the cover has an interior surface separated from the LED chips by a gap, and where an exterior surface of the cover is coated with a phosphor. The ceramic cover preferably has a bulk thermal conductivity of at least 5 W/(m·K), such as polycrystalline alumina. The LED chips preferably are blue LEDs and the phosphor is selected so that the lamp emits white light. In the method of making the lamp, the phosphor may be applied to the exterior surface of the cover as a preformed sheet or in a coating. | 06-09-2011 |
| 20110127924 | FREQUENCY MODULATION METHOD AND DEVICE FOR HIGH INTENSITY DISCHARGE LAMP - An electronic control gear for a HID lamp receives an input signal for operating the lamp and frequency modulates the input signal to generate a frequency modulated output signal that drives an arc of the lamp. The frequency modulation of the output signal sweeps continuously between a low frequency modulation and a high frequency modulation, the low frequency modulation being a frequency f | 06-02-2011 |
| 20110121759 | METHOD AND GAS DISCHARGE LAMP WITH FILTER TO CONTROL CHROMATICITY DRIFT DURING DIMMING - Techniques are disclosed that allow for the use of metal halide lamps in dimming applications, as well as other discharge lamps susceptible to dimming-induced chromaticity drift. Examination of such lamps reveals that some of the spectral changes that cause chromaticity drift during dimming are localized in narrow band regions of the spectrum, and lamp emission in these regions is enhanced (either increased or decreased) relative to the rest of the spectrum. Selective filtering of the enhanced emission caused by dimming can be used to reduce chromaticity shift. For instance, a filter deposited on and/or integrated into a lamp component (such as the arc tube, shroud, and/or outer jacket) operates to block transmission of those regions of the spectrum. | 05-26-2011 |
| 20110109230 | Ballast Circuit for LED-Based Lamp Including Power Factor Correction with Protective Isolation - A ballast circuit for a light emitting diode (LED) based lamp including power factor correction with protective isolation. The circuit includes a transformer with electrically isolated windings and a power factor correction circuit that receives no feedback from a secondary winding side of the transformer. An LED-based lamp assembly and a method of driving an LED-based light source are also provided. | 05-12-2011 |
| 20110089861 | Mechanical Interface For Glass Bulb For Use in Solid State Light Source Retrofit Lamps - A mechanical interface for a glass bulb is provided. The mechanical interface includes a connector and an optical mount. The connector is in contact with the glass bulb. The connector may be a separate component attached to the glass bulb, or may be a continuous part of the glass bulb, such that the connector is itself made of glass. The optical mount is configured to receive the connector. In so receiving, the optical mount operatively couples with the connector so as to secure the glass bulb in a position. The optical mount is also configured to attach to a lamp housing. A solid state light source retrofit lamp may thus be formed of a lamp housing including a solid state light source light engine and its required components, a glass bulb, and a mechanical interface for the glass bulb. | 04-21-2011 |
| 20110074277 | AMALGAM SUPPORT IN AN INDUCTIVELY COUPLED DISCHARGE LAMP - An inductively coupled fluorescent discharge lamp includes a light transmissive envelope having a re-entrant cavity that has an outer surface inside the envelope, and an excitation coil inside the re-entrant cavity, and a spring clip that is attached to the outer surface of the re-entrant cavity by spring action of the spring clip on the outer surface, where the spring clip includes an amalgam. The spring clip may include a layer of the amalgam plated on a surface of the clip, or an amalgam-bearing flag attached to the clip. | 03-31-2011 |
| 20110062879 | BALLAST WITH LAMP-DIAGNOSTIC FILAMENT HEATING, AND METHOD THEREFOR - A ballast ( | 03-17-2011 |
| 20110062878 | BALLAST WITH LAMP FILAMENT DETECTION - A ballast ( | 03-17-2011 |
| 20110058299 | TRANSIENT VOLTAGE PROTECTION CIRCUIT AND SYSTEM INCORPORATING THE SAME - A transient voltage protection circuit that protects a load from transient voltages is disclosed. The circuit includes a series combination of a thyristor surge protection device (TSPD), a resistor and a transorb coupled for coupling in parallel with the load, and a fuse coupled between an AC input and the series combination. The TSPD and the transorb are configured to enter a transient mode upon application of a transient voltage to the circuit to shunt current from the load and provide an AC output voltage to the load less than the transient voltage without opening the fuse. | 03-10-2011 |
| 20110043122 | Resonant Inverter With Sleep Circuit - A sleep circuit for use in a resonant inverter is disclosed. The sleep circuit activates a “sleep mode” (non-continuous operation) when the inverter output has no connected load, or a connected load is non-operative (e.g., fails). The “sleep mode” utilizes hysteresis control via the under voltage lockout protection feature of a control IC of the inverter. A primary DC source permanently connects to the Vcc pin of the control IC for startup (on) and burst (non-continuous) operation modes. An auxiliary DC source connects to the Vcc pin via a switch for continuous operation mode. A load current sensor controls the switch. When a sensed output current is above a threshold level, the switch connects the auxiliary DC source, and the control IC (and the inverter) operates continuously. When the sensed output current falls below the threshold, the auxiliary DC source is not provided and the inverter operates in “sleep mode”. | 02-24-2011 |
| 20110043119 | Method of Starting an HID Lamp and Ballast Incorporating Same - There is provided herein a method for starting a high intensity discharge lamp and a ballast incorporating the same. In a preferred embodiment, the method comprises the steps of: (a) obtaining a cumulative probability function of breakdown times, P(t), for the lamp at a voltage, V; (b) determining a minimum pulse length, T | 02-24-2011 |
| 20100315011 | LAMP ASSEMBLY WITH LED AND FLUORESCENT LAMP - A lamp assembly includes a lamp base having power input terminals, a fluorescent lamp connected to the terminals through a manually operated switch that is on an exterior of the lamp base so that when power is supplied to the terminals the fluorescent lamp is selectively powered by manual operation of the switch, and a light emitting diode (LED) inseparably connected to the terminals so that when power is supplied to the terminals the LED is always powered. This arrangement allows the LED to be ON regardless of the operating status of the fluorescent lamp and allows the fluorescent lamp to be turned OFF while the LED remains ON. | 12-16-2010 |
| 20100308750 | CONSTANT CURRENT DRIVER CIRCUIT WITH VOLTAGE COMPENSATED CURRENT SENSE MIRROR - A current sensing circuit for sensing the current provided to LEDs by a constant current power source includes a resistive shunt in series with the load and a current mirror having a first leg connected to a first terminal of the resistive shunt and a second leg connected to a second terminal of the resistive shunt. Both legs of the current mirror are also connected to ground. The first leg provides a reference signal to the second leg, and the second leg uses the reference signal and a voltage at the second terminal of the resistive shunt to provide a ground referenced output signal indicative of the current provided to the LEDs. | 12-09-2010 |
| 20100302821 | Operating Resonant Load Circuit, Dimming Circuit and Dimming Method - An operating resonant load circuit, a dimming circuit and a dimming method are disclosed. The operating resonant load circuit includes: an input unit including a plurality of input terminals, for receiving an AC voltage; a rectifier, for transforming the AC voltage received by the input unit into a DC bus voltage; and a controller, for dividing the DC bus voltage based on an conducting status of the input terminals to output a corresponding DC reference voltage. The dimming circuit and dimming method use the operating resonant load circuit to perform dimming. | 12-02-2010 |
| 20100301759 | RESTART CIRCUIT FOR MULTIPLE LAMP ELECTRONIC BALLAST - A restart circuit for causing an electronic ballast to perform a restart in response to reconnecting any lamp of a multiple lamp configuration of the electronic ballast to the electronic ballast is disclosed. The electronic ballast includes a filament health check circuit for providing a first current through a monitored filament of the lamps to a controller of the ballast. The controller restarts the electronic ballast when a determined ratio of the first current to a reference current indicates that the monitored filament has been disconnected or broken (i.e., the first current substantially decreases) and is subsequently replaced or reconnected to the ballast (i.e., the first current returns to a predetermined level). The ballast further comprises a dv/dt circuit for reducing the first current for a transient time period in response to reconnecting a filament other than the monitored filament to the ballast, causing the controller to restart the ballast. | 12-02-2010 |
| 20100301754 | Electronic Ballast Control Circuit - A control circuit for use in a ballast configured for powering a first lamp set and a second lamp set. The second lamp set is operated via a controller and a second lamp driver circuit. The controller enables the second lamp driver circuit as a function of a monitored value corresponding to a current through a lamp of the second lamp set. The control circuit includes first and second input terminals for selectively connecting to the power supply. The control circuit reduces the monitored value as a function of a connection state of the first and second input terminals of the control circuit to the power supply. Thus, the control circuit causes the controller to selectively operate the second lamp driver circuit in order to energize the second lamp set in combination with the first lamp set. | 12-02-2010 |
| 20100301752 | RESETTING AN ELECTRONIC BALLAST IN THE EVENT OF FAULT - A ballast for driving one or more lamps includes a controller and a current reduction circuit for accelerating a controller reset. Upon detecting a fault, the controller disables the ballast for a preset period of time, and resets. The controller additionally resets when the ratio of a supplied second value to a supplied first value falls below a threshold value. The current reduction circuit reduces the supplied second value in less than the preset period of time, such that the ratio falls below the threshold value and the controller resets. An emergency lighting system includes the ballast as a primary ballast, a backup ballast, and a primary power source. The controller detects a fault if the primary power source de-energizes and the backup ballast disconnects the one or more lamps from the primary ballast. The current reduction circuit accelerates the reset of the controller when the primary power source de-energizes. | 12-02-2010 |
| 20100301747 | LAMP WITH APPEARANCE DIFFERENTIATED FROM ITS MAIN ILLUMINATION - A lamp including a two-sided source plate, a plurality of light sources, a lens, a diffuser plate, and a driver insulator is disclosed. One set of the light sources generates white light and is attached to one side of the source plate. Another set of the light sources generates colored light and is attached to the source plate's other side. The lens encapsulates the white light-generating set, and redirects that white light. The driver insulator and the diffuser plate are each in contact with the source plate's other side. The driver insulator, diffuser plate, and that side of the source plate define a light box region that contains the colored light-generating set of light sources. The driver insulator acts as a reflector, and the diffuser plate acts as a diffuser, such that colored light is dispersed from the light box region through the diffuser plate. | 12-02-2010 |
| 20100291808 | CONNECTOR HEADER WITH WIRE WRAP PINS - A connector header ( | 11-18-2010 |
| 20100289421 | STARTING AN ELECTRONIC BALLAST - A ballast including an H-bridge type inverter for driving a lamp and a filter circuit that includes a buck inductor is disclosed. The buck inductor is a primary winding of a transformer, and a secondary winding of the transformer provides power to a controller of the ballast. The controller operates the inverter in various pre-ignition modes of operation such that prior to ignition, the open circuit voltage (OCV) (i.e., voltage across the lamp) and buck inductor current are controlled to transfer sufficient power from the primary of the transformer to the secondary winding of the transformer to power the controller. No switches of the inverter are turned on while there is a non-zero current through the filter circuit. | 11-18-2010 |
| 20100283399 | Symmetrical RF Power Supply for Inductively Coupled Electrodeless Lamps - A radio frequency (RF) power supply for an electrodeless lamp includes a pair of DC rails, an RF inverter having power input terminals connected between the rails, a first inductor arranged to inductively couple with an electrodeless lamp, first and second resonance capacitors that each connects a respective one of two input terminals of the first inductor to a same first rail of the pair of DC rails, and a second (ballasting) inductor connecting an output of the RF inverter to one of the two input terminals of the first inductor. Thus, the first inductor is connected in a symmetrical π-filter and supplied by two equal but phase-opposite voltages whose sum is the lamp voltage. The inductance of the ballasting inductor is significantly reduced so that the RF efficiency of the power supply is 96%. | 11-11-2010 |
| 20100259901 | HOUSING FOR ELECTRONIC BALLAST - An electronic housing assembly is formed with an environmental seal ( | 10-14-2010 |
| 20100246200 | AUTOMOTIVE TAILLIGHT LIGHT GUIDE - A light guide for an automotive tail light may be efficiently made with a plurality of thick planar light guides stacked side by side to have a common input source point at one end, but spread at their respective opposite ends to be arranged to form parallel planes separated sufficiently to project a relatively larger combined image that may suggest in outline a larger object. The relatively thick plates efficiently transmit light. The planar structures direct light efficiently in the horizontal plane. The side by side offset of the output windows creates an image of a larger more readily seen structure. | 09-30-2010 |
| 20100245802 | Optical Sensor System Including Series Connected Light Emitting Diodes - An optical sensor system having a light source comprising a plurality of series connected light emitting diodes (LEDs). The series connected LEDs may be switched at a predetermined frequency. | 09-30-2010 |
| 20100244795 | Current Source to Drive a Light Source in an Optical Sensor System - A current source circuit to drive a light source in an optical sensor system is disclosed. The current source includes an inductor connected in series with a resistor, and a diode coupled in parallel with the inductor and resistor. The current source is configured to receive a regulated direct current (DC) voltage and to provide the current through the inductor to the light source when a switch is closed, and to divert current through the inductor to the diode when the switch is open. | 09-30-2010 |
| 20100244737 | Dual Voltage and Current Control Feedback Loop For an Optical Sensor System - A dual voltage and current control feedback control loop for an optical sensor system. A power supply provides a regulated DC voltage. A current source receives the regulated DC voltage and provides switched current to a light source. A current feedback representative of the current to the light source is provided to the power supply on a feedback path when the current source is driving the light source. A voltage feedback representative of the DC voltage is provided to the power supply on the feedback path when the current source is not driving the light source. | 09-30-2010 |
| 20100243897 | High Voltage Supply to Increase Rise Time of Current Through Light Source in an Optical Sensor System - A high voltage supply circuit to drive a light source in an optical sensor system. The high voltage supply provides a high voltage output to the light source during the start of an on time for the light source to decrease current rise time through the light source. After the start of the light source on time, the high voltage output is disconnected from the circuit and a current source provides current output to the light source to drive the light source during the remainder of the light source on time. | 09-30-2010 |
| 20100243512 | LINEAR LAMP CELL PACK - A tray for supporting linear lamps in large cartons may be made to nest in one orientation and on rotation by 180 degrees may stack to form a latched array of lamp cradles. The cradle walls are formed along their lengths with alternating lengths and gaps. The alternating wall sections of the cradle walls are asymmetric right to left along the cradle axis. The walls forming the rows of cradles are arranged to be paired with a non-nesting wall on rotation by 180 degrees. In this way, at least one point along the length of each wall is supported in the non-nesting orientation. By forming latching features at the support points, the trays can be locked together as a rigid array of lamp cradles. | 09-30-2010 |
| 20100232164 | LED LAMP ASSEMBLY - An LED lamp assembly with a substantial heat sink may be inexpensively constructed using sections of extruded metal as the heat sink. The extruded heat sink sections are trapped in latched sandwich structure assuring good thermal contact between the LED light sources and the extruded heat sink and a metal optic. The inexpensive structure may be rapidly assembled. | 09-16-2010 |
| 20100213815 | HALOGEN LAMP CAPSULE SUPPORT FOR PLASTIC BASE - An automotive headlamp comprising a light capsule including a seal and a retainer affixed to the seal, the retainer having an upper surface, an extending wall having an outer wall and an inner wall. A plastic base includes a cavity arrayed about an axis and has a circumferential wall about the cavity. A pair of axial slots is formed in the circumferential wall form segments of a circle arching around the axis, the slots being further defined by a pair of oppositely disposed end stops. Metal inserts having base ends sized and shaped to closely fit the axial slots are positioned in the slots, each of the metal inserts having extended resilient fingers each having a retainer engager formed to engage a wall of the retainer to support the retainer; and two retention features formed with each of the base ends, the retention features engaging the circumferential wall. | 08-26-2010 |
| 20100213814 | RETAINING SLEEVE WITH RETENTION FEATURE - An automotive headlamp has a light source capsule including a seal area and a cup-shaped retainer affixed to the seal area. A plastic base includes a cavity arrayed about an axis and has a circumferential wall about the cavity. Axial slots are formed in the circumferential wall, the slots forming segments of a circle arching around the axis, the slots being further defined by a pair of oppositely disposed end stops. Metal inserts having base ends sized and shaped to closely fit the axial slots are positioned in the slots, each of the metal inserts having an extended resilient finger each having a retainer engager formed to engage the retainer. Retention features are formed with each of the base ends, the retention features engaging the circumferential wall and increasing the force necessary to remove the inserts. | 08-26-2010 |
| 20100208488 | LED Lamp Including Light Guide and Method of Reflecting Light Using Same - An LED lamp including a light guide/light pipe, and a method of reflecting light using same, are disclosed. The LED lamp includes a transparent light pipe enclosed in an envelope, where the light pipe has a lower section and an upper section. The lamp also includes an LED in a recess at a lower end of the lower section, and a reflector formed by an indentation in an upper end of the upper section. The lower section may be a compound parabolic concentrator, and the upper section may be a tapered cylinder. The lower section of the light pipe collects light emitted from the LED, the upper section of the light pipe directs the collected light onto the reflector, and the reflector reflects the directed light in a radial direction. | 08-19-2010 |
| 20100195335 | BEAM SPREADING OPTICS FOR LIGHT EMITTING DIODES - An optical element is disclosed, for receiving relatively narrow light from a planar light-emitting diode (LED) source, and for redistributing the light into a relatively wide range of output angles that span a full 360 degrees. The element may be used to retrofit existing fixtures that were originally designed for incandescent bulbs with LED-based light sources that have similar emission profiles. The element is small enough so that it may be packaged along with an LED module and its control electronics in the volume envelope of an incandescent light bulb. An exemplary element is a single, transparent, rotationally-symmetric lens that has a batwing shape in cross-section, extending angularly away from a longitudinal axis. The lens also includes a variety of curved, straight, specular and optionally diffuse portions on its longitudinal and transverse faces, all of which cause a variety of internal and external reflections, refractions, and optionally scattering. As such, many of the specific lens features cannot be directly linked to specific optical effects at a particular angle; rather, the features all interact with each other to produce the wide-angle light output. | 08-05-2010 |
| 20100182788 | LED LAMP ASSEMBLY - A robust LED lamp may be assembly by forming a heat sinking sandwich with two metal heat sinks positioned around the circuit board and pinned together a heat conductive element. The assembly is positioned by pressing it into a base providing electrical connections. The robust assembly is rapidly assembled, thermally effective in draining or spreading heat from the circuit board and is readily adaptable to a variety of applications lighting. The heat sink may be decorated, colored or otherwise esthetically enhanced for consumer appreciation. | 07-22-2010 |
| 20100181885 | LED LAMP ASSEMBLYl - A robust LED lamp may be assembly by forming a heat sinking sandwich with two metal heat sinks positioned around the circuit board and pinned together a heat conductive element. The assembly is positioned by pressing it into a base providing electrical connections. The robust assembly is rapidly assembled, thermally effective in draining or spreading heat from the circuit board and is readily adaptable to a variety of applications lighting. The heat sink may be decorated, colored or otherwise esthetically enhanced for consumer appreciation. | 07-22-2010 |
| 20100171438 | ELECTRONIC BALLAST HAVING CURRENT WAVEFORM CONTROL WITHIN THE HALF WAVE - Aspects of the invention include an electronic ballast and method for controlling current through a lamp to produce various current waveforms through the lamp. In one embodiment, the ballast samples and adjusts the current through the lamp on a micro-second time scale within each half-cycle of the current waveform (i.e., at least twice within a period of a reference waveform). The ballast can accommodate different lamp types, provide arbitrary current waveforms, operate a lamp at multiple power levels, and provide power to the lamp as a function of an operational state of a lamp. For example, in one embodiment, the ballast increases power to the lamp and adjusts the current waveform provided to the lamp as the lamp ages to minimize luminous flux loss caused by darkening of lamp walls and changes in lamp chemistry. | 07-08-2010 |
| 20100165599 | REMOTE PHOSPHOR LED ILLUMINATION SYSTEM - An illuminator is disclosed, in which an LED module emits short-wavelength light toward a phosphor module, which absorbs it and emits wavelength-conditioned light. The emission is generally longitudinal, with a generally Lambertian distribution about the longitudinal direction. The phosphor module includes a transparent layer, closest to the LED module, and a phosphor layer directly adjacent to the transparent layer. Both layers are oriented generally perpendicular to the longitudinal direction. The illuminator includes a reflector, circumferentially surrounding the emission plane in the LED module and extending longitudinally between the emission plane and the transparent layer. Virtually all the light emitted from the LED module either enters the phosphor module directly, or enters after a reflection off the reflector. The transverse side or sides of the transparent layer support total internal reflection, so that virtually all the light that enters the transparent layer, from the LED module, is transmitted to the phosphor layer. In some applications, the phosphor layer is located at the focus of a concave mirror, which can narrow and/or collimate the light emitted by the phosphor. Adjacent to the phosphor layer and opposite the transparent layer, the phosphor module can include a transparent dome, a heat sink, or nothing. | 07-01-2010 |
| 20100164351 | LAMP ASSEMBLY WITH SNAP-IN CAPSULE CLIP | 07-01-2010 |
| 20100134005 | SEALING COMPOSITION FOR SEALING ALUMINUM NITRIDE AND ALUMINUM OXYNITRIDE CERAMICS - There is described a sealing composition for sealing aluminum nitride and aluminum oxynitride ceramics comprising: a mixture of SiO | 06-03-2010 |
| 20100117554 | High Frequency Integrated HID Lamp With Run-Up Current - A high frequency ballast for a metal halide lamp comprises a controller, a switch, and an oscillator. The ballast is rated at a higher power than the steady state operating power of the lamp. The controller ignites the lamp at a frequency which is less than the steady state operating frequency of the lamp and ignites the lamp at a current which is greater than the steady state operating current of the lamp. | 05-13-2010 |
| 20100109754 | Bias circuit for a switching power supply - A bias circuit for a switching power supply includes a rectifier that is connected to an AC power source and outputs a full wave rectified voltage Vs; a voltage divider, a diode, a first transistor, and a second transistor connected in parallel between Vs and ground; a capacitor connected between a first terminal of the second transistor and ground; and a node between the capacitor and the first terminal of the second transistor providing an output bias voltage Vcc from the bias circuit. A voltage from the voltage divider is provided to a gate of the first transistor, and the diode and a first terminal of the first transistor are connected to a gate of the second transistor. | 05-06-2010 |
| 20100109557 | Floating Switch Controlling LED Array Segment - A control circuit used in a lamp system. The lamp system has a first and a second light emitting diode (LED) connected together in series. The control circuit includes a current source for connecting to the first LED to provide a regulated drive current to the first and second LEDs in order to illuminate the LEDs. The control circuit includes a switching component for connecting in parallel with the first LED to divert the driver current from the first LED and provide the driver current to the second LED when the switching component is activated. The control circuit includes a controller for selectively activating the switching component in order to selectively extinguish the first LED. | 05-06-2010 |
| 20100109539 | Power converter and power conversion method with reduced power consumption - A power converter and power conversion method converts an input AC signal to a voltage usable by a load while reducing power consumption, thereby making the converter and method suitable for a wider range of applications. A rectifier receives the AC input signal and outputs a rectified voltage Vs, a controller has a power input connected to Vs and outputs two out-of-phase signals, two transistors are connected in series between Vs and a ground and each of the two transistors has a gate connected to a respective one of the two out-of-phase signals, and a transformer that has a primary coil connected to a node between the two transistors and a secondary coil connected to a load feeds back current from the secondary coil to the power input of the controller to reduce power consumption. | 05-06-2010 |
| 20100097821 | LIGHT EMITTING DIODE-BASED LAMP HAVING A VOLUME SCATTERING ELEMENT - A lamp having a candle-like appearance and using one or more light-emitting diodes (LEDs) as its light source is presented. The candle-like appearance arises because light is emitted from only a small volume at or near the center of the bulb. The heat sink and control electronics are located outside the bulb of the lamp. Inside the bulb is a set of secondary optics that guide the light from one or more LEDs to an emission point at a prescribed location in the interior of the bulb. The secondary optics include a light pipe that guides light away from the LED chip, and a volume scattering element that receives the light from the light pipe and scatters it into various directions. The volume scattering element is made from a transparent base material, and includes transparent particles of a predetermined size and refractive index. Because the lamp is typically used in an overhead position, such as in a hanging chandelier, the density of particles in the volume scattering element, the particle size and the particle refractive index are chosen to produce a scattering pattern that directs more light downward (toward the base of the bulb) than upward, while maintaining a reasonable efficiency (fraction of produced light that successfully exits the lamp). Simulation results are presented. | 04-22-2010 |
| 20100079077 | AC Delay Angle Control for Energizing a Lamp - A control circuit for a lamp. The control circuit is used in conjunction with an alternating current (AC) variable voltage power source to energize the lamp. The control circuit includes a voltage sensing component for sensing the voltage of an voltage input signal from the power source for energizing the lamp. The control circuit includes a controller configured to estimate a delay angle as a linear function of the sensed voltage. The control circuit includes an AC converter for modifying the voltage input signal according to the estimated delay angle to generate an AC voltage output signal having a constant root mean square voltage for energizing the lamp. | 04-01-2010 |
| 20100079070 | MERCURY-FREE DISCHARGE LAMP - A mercury-free discharge lamp includes a hollow cylindrical body, two capillaries entirely inside the body and hermetically sealed to the body, each with a respective electrode therein, where the capillaries are separated from each other inside the body by a gap that is a discharge chamber of the discharge lamp, and where each of the electrodes has an interior end exposed inside the discharge chamber and an exterior end extending beyond a respective end of the body. A pair of frit seals seal respective electrode exterior ends to respective ones of the capillaries. The discharge chamber preferably includes a mercury-free metal halide salt fill that is 10 to 54.5 wt % NaI, 6.6 to 15 wt % DyI | 04-01-2010 |
| 20100078151 | CERAMIC HEAT PIPE WITH POROUS CERAMIC WICK - A heat pipe for transporting heat from light emitting elements includes a sealed body made of a non-porous ceramic, a vapor channel inside the body that extends between two heat transfer locations spaced apart on an exterior surface of the body, a ceramic wick inside the body that extends between the two heat transfer locations, and a working fluid that partially fills the vapor transport channel. In a method of making this heat pipe, the body and wick are desirably formed together as a seamless monolithic structure made of the same ceramic material. Using a ceramic makes the heat pipe corrosion resistant and allows electrical components like LEDs to be mounted directly on the body because the ceramic is a dielectric. | 04-01-2010 |
| 20100066247 | INTEGRATED IGNITER BASE FOR CERAMIC METAL HALIDE LIGHT SOURCE - A PAR38 light source assembly for use with a fixture having socket connected to a ballast circuit for generating a ballast voltage. An electrically insulating housing supports a PAR38 screw base and encloses a CMH lamp and a circuit board providing a high voltage to ignite or re-ignite the lamp. The housing supports a reflector a lens wherein the lens, the reflector and the housing form an electrically insulating enclosure so that the PAR38 screw base is the only electrically conductive portion. | 03-18-2010 |
| 20100052505 | Tanning lamp - A low pressure fluorescent tanning lamp ( | 03-04-2010 |
| 20100026181 | CERAMIC DISCHARGE VESSEL AND METHOD OF MAKING SAME - A ceramic discharge vessel has a hollow body with at least one receptor. A molybdenum tube is shrink-fit in the receptor, preferably in the form of capillaries. The shrink fit provides a hermetic seal without the use of glass frits or other additional sealing materials. An electrode having a rod portion is inserted into the molybdenum tube. The rod portion of the electrode is welded to the tube at a remote end of the tube. The inner diameter of the molybdenum tube is no more than 0.02 mm greater than the outer diameter of the rod portion of the electrode so that a gap of 0.01 mm or less is formed between the rod portion and the tube to inhibit pooling of the discharge medium, e.g., a metal halide fill, in the gap. | 02-04-2010 |
| 20100019674 | FRIT SEAL MATERIAL, LAMP WITH FRIT SEAL, AND METHOD FOR SEALING A HIGH INTENSITY DISCHARGE LAMP - A high intensity discharge lamp includes an arc tube with a chemical fill, capillaries extended from the arc tube, electrodes fed through the capillaries into the arc tube, and a frit seal that seals the capillaries, where the frit seal includes silica (SiO | 01-28-2010 |
| 20100002458 | Automotive lamp and reflector for low beam and advanced forward lighting system - An advanced forward lighting system may be made with a lamp having a first filament and a second filament extending perpendicular to the first filament. The second filament is partially hidden rearward and above the first filament. A reflector forms a main beam from the first filament light and a right or left cast supplemental beam from the second filament light. The second filament's position minimizes glare, and enables a simple advanced forward lighting system from a single standard lamp fitting both right and left side reflectors. | 01-07-2010 |
| 20090322238 | Internal Power Supply for a Ballast - A ballast used with an input power source for energizing a lamp. The ballast includes a power stage, a controller, an internal power supply for the power stage and the controller, and an input switch. The power stage energizes the lamp with power supplied by the input power source. The internal power supply is connected to the power stage for receiving power from the power stage and is connected to the input power source via the input switch for receiving power from the input power supply when the input switch operates in a closed mode. When the input switch operates in an open mode it electrically disconnects the internal power supply from the input power source. The controller selectively operates the input switch in the open mode and the closed mode as a function of the voltage of the internal power supply while the lamp is energized. | 12-31-2009 |
| 20090322228 | False Failure Prevention Circuit In Emergency Ballast - A backup ballast used with a primary ballast for providing power to one or more lamps. The backup ballast includes an output switch and a delay circuit. The output switch has a first operating mode for connecting a primary power source via the primary ballast to a first set of the lamps and second operating mode for connecting a backup power source with a second set of the lamps. The output switch operates in the first operating mode when it is energized and in the second operating mode when said it is not energized. The delay circuit is adapted for connecting to the primary power source for receiving power therefrom. The delay circuit is connected to the output switch for energizing it while the power is being received and for a delay period thereafter. The delay circuit includes an energy-storage component for storing energy while the power is being received and discharging the stored energy when the power is not being received in order to energize the output switch for the delay period. | 12-31-2009 |
| 20090322225 | Starting Aid for HID Lamp - A high-intensity discharge lamp includes a discharge vessel made of an insulator, and a cathode and anode. A V-shaped gap is provided between the anode and a first region of the vessel directly adjacent to where the anode separates from an interior surface of the vessel. A secondary cathode is provided on an exterior surface of the vessel at the first region, where the secondary cathode is positioned so that the V-shaped gap and the first region are between the secondary cathode and the anode. An electric field at the first region produces a dielectric barrier discharge (DBD) which generates ultraviolet (UV) and vacuum ultraviolet VUV photons that impinge on the cathode and initiate a breakdown between the cathode and anode. | 12-31-2009 |
| 20090322224 | STARTING AID FOR HID LAMP - An arc discharge light source ( | 12-31-2009 |
| 20090310348 | Method and System for Controlling Lighting - A method and system for controlling lighting in a space reduces energy consumption of the light sources by changing at least one of the color rendering index (CRI) and the correlated color temperature (CCT) while maintaining illumination levels. Preferably, the method and system sense movement of people in the space relative to light sources that light the space, and automatically and individually adjust plural solid state lighting devices that form each of the respective light sources to a first lighting condition when people are in a first position, wherein the lamps respectively emit light of a first illumination level and a first CRI at a first electrical power level, and to a second lighting condition when people are in a second position, wherein the light sources respectively emit light of the first illumination level and a smaller CRI than the first CRI and at a lower electrical power level than the first electrical power level. | 12-17-2009 |
| 20090309067 | METHOD OF MAKING A LEAD-ACTIVATED STRONTIUM HEXABORATE PHOSPHOR - There is provided a method of making a SrB | 12-17-2009 |
| 20090302775 | MULTI-LAMPS INSTANT START ELECTRONIC BALLAST - The electronic ballast comprises a series half bridge resonant inverter and a control circuit for the inverter with dimming capability. The inverter includes a first and a second voltage feedback circuits including first and a second charge pumps coupled in between inverter output and the dimming input of the control circuit. The feedback circuits generate a reference control signal to control operation after starting and an error control signals when the inverter output voltage exceeds a predetermined value. | 12-10-2009 |
| 20090296418 | SIDE-LOADED LIGHT EMITTING DIODE MODULE FOR AUTOMOTIVE REAR COMBINATION LAMPS - A side-loading LED module for a rear combination lamp is disclosed. One or more LEDs are mounted on a distal side of a printed circuit board, which also includes the circuitry that drives the one or more LEDs. The circuit board and a thermal pad are screwed/riveted to a heat sink, then the heat sink is mounted to a lateral face of a housing. The LEDs emit diverging light laterally inside the housing. One face of the housing is a faceted parabolic reflector, which receives the diverging light from the LEDs and reflects a collimated beam longitudinally to the front of the housing, where it passes through a clear cover and exits the lamp. The facets on the parabolic reflector angularly deviate portions of the reflected beam, so that the reflected light is collimated, and is angularly broader than a single collimated beam. | 12-03-2009 |
| 20090296417 | REAR-LOADED LIGHT EMITTING DIODE MODULE FOR AUTOMOTIVE REAR COMBINATION LAMPS - A rear-loading LED module for a rear combination lamp is disclosed. One or more LEDs are mounted on a printed circuit board that electrically powers and mechanically holds them outside a faceted, parabolic reflector. Light emitted from the LEDs enters a light propagation region, formed between the reflective adjacent faces of two nested cylinders. The cylinders extend from the LEDs, outside the reflector, longitudinally through a hole at the vertex of the reflector, to the focus of the reflector. In some applications, the light propagation region may act as a beam homogenizer, so that light exiting the light propagation region may have roughly uniform intensity. Light from the light propagation region strikes an outwardly-flared reflector that directs it largely transversely onto the parabolic reflector. The parabolic reflector collimates the light and directs it longitudinally, through a transparent cover and out of the lamp. The parabolic reflector may have facets that angularly divert portions of the reflected light to form a desired two-dimensional angular distribution for the exiting beam. | 12-03-2009 |
| 20090296416 | REAR-LOADED LIGHT EMITTING DIODE MODULE FOR AUTOMOTIVE REAR COMBINATION LAMPS - A rear-loading LED module for a rear combination lamp is disclosed. One or more LEDs are mounted on a printed circuit board that mechanically holds them at the focus of a faceted, parabolic reflector. Light from the LEDs diverges transversely and horizontally, and is collimated by the reflector, and the reflected collimated light is directed in a generally longitudinal direction out of the rear combination lamp, toward the viewer. The LED module itself is generally longitudinally oriented, and is insertable longitudinally into the interior of the reflector from a hole at the vertex of the reflector. The printed circuit board, an optional thermal pad adjacent to the printed circuit board, and a thermally conductive layer adjacent to the optional thermal pad are all generally planar layers, are all generally parallel to each other, and may optionally all have the same footprint. Together, the printed circuit board, the thermal pad and the thermally conductive layer may all form a generally planar ledge. | 12-03-2009 |
| 20090289573 | MICROCONTROLLER BASED IGNITION IN HIGH FREQUENCY CERAMIC METAL HALIDE LAMPS - A high frequency ballast for a metal halide lamp comprises a controller, a switch, and an oscillator. The controller selectively enables and disables the oscillator via the switch to ignite the lamp. The switch selectively tunes and detunes an inductor of the oscillator by altering an inductance of the inductor. When the inductor is tuned, the oscillator oscillates and provides power to the lamp. When the inductor is detuned, the oscillator does not oscillate and does not provide power to the lamp. | 11-26-2009 |
| 20090289572 | IGNITION FOR CERAMIC METAL HALIDE HIGH FREQUENCY BALLASTS - A high frequency ballast for a metal halide lamp comprises a controller, a switch, and an oscillator. The controller selectively enables and disables the oscillator via the switch to ignite the lamp. The switch is in a power supply loop of the oscillator and selectively open circuits and close circuits the power supply loop. When the switch close circuits the power supply loop, the oscillator oscillates and provides power to the lamp. When the switch open circuits the power supply loop, the oscillator does not oscillate and does not provide power to the lamp. | 11-26-2009 |
| 20090289565 | AGGREGATE IGNITION METHOD IN HIGH FREQUENCY METAL HALIDE LAMPS - A high frequency ballast for a metal halide lamp comprises a controller, a switch, and an oscillator. The controller selectively enables and disables the oscillator via the switch to ignite the lamp. The ignition method includes enabling the oscillator such that the oscillator provides the lamp with a pulse train comprising a rapid series of short ignition pulses, cools for a period of time, and provides an addition pulse train to the lamp if necessary to ignite the lamp. When the lamp ignites, the ballast maintains enablement of the oscillator. | 11-26-2009 |
| 20090289564 | CERAMIC METAL HALIDE LAMP BI-MODAL POWER REGULATION CONTROL - A high frequency ballast for a metal halide lamp comprises a controller, a switch, and an oscillator. The controller selectively enables and disables the oscillator via the switch to ignite the lamp. The switch selectively alters an inductance of the inductor to switch between a first frequency of the oscillator and a second frequency of the oscillator different than the first. The controller monitors a current of a power supply loop of the oscillator and a voltage of the oscillator and determines a duty cycle as a function of the monitored voltage and current. The duty cycle is indicative of the percentage of time that the oscillator is to operate at the first frequency versus the second frequency. | 11-26-2009 |
| 20090289553 | INTEGRATED CERAMIC METAL HALIDE HIGH FREQUENCY BALLAST ASSEMBLY - A ballast assembly for use with an HID lamp comprising a circuit board, a first electrically conductive heat sink in the form of a first shell positioned on a first side the circuit board and a second electrically conductive heat sink in the form of a second shell positioned on a second side of the circuit board. The first and second shells define an enclosure within which the circuit board and substantially all components on the circuit board are located to dissipate heat and reduce EMI. | 11-26-2009 |
| 20090284153 | CERAMIC DISCHARGE LAMP WITH INTEGRAL BURNER AND REFLECTOR - A ceramic discharge lamp and a method of making the lamp includes a ceramic discharge chamber with two concave parts that are attached to each other at a seam, and a ceramic reflector directly attached to an exterior surface of the discharge chamber at the seam, or directly attached to a ceramic capillary that is attached to one of the two concave parts. The lamp finds particular application where focused light is required, such as injection of light into a fiber optic device. The lamp can be very small and has an advantage that the discharge chamber is isolated from the reflective surfaces so that the optically active parts of the reflector are not covered with salt from the preferred metal halide lamp fill. | 11-19-2009 |
| 20090280713 | Method of making an integral HID reflector lamp - An integral HID reflector lamp may be formed with an HID held in a reflector. An inner element is mechanically coupled to the reflector. The inner element is formed with a first mechanical coupling to mate with the reflector, a second mechanical coupling to mate with a circuit board, and an electrical coupling to at least electrically couple one of the leads to the circuit board. A circuit board has an edge mechanically coupled to the inner element and electrically connected to the leads by an electrical coupling on the inner element. A heat sink spans at least one side of the circuit board and forming an EMI shielding. An outer cover encloses the heat sink, circuit board, and inner element and coupled to the assembly of the reflector, HID lamp, inner element, and heat sink with each elements of the assembly clipped together. | 11-12-2009 |
| 20090279310 | Integral reflector lamp assembly - An integral HID reflector lamp may be formed with an HID held in a reflector. An inner element is mechanically coupled to the reflector. The inner element is formed with a first mechanical coupling to mate with the reflector, a second mechanical coupling to mate with a circuit board, and an electrical coupling to at least electrically couple one of the leads to the circuit board. A circuit board has an edge mechanically coupled to the inner element and electrically connected to the leads by an electrical coupling on the inner element. A heat sink spans at least one side of the circuit board and forming an EMI shielding. An outer cover encloses the heat sink, circuit board, and inner element and coupled to the assembly of the reflector, HID lamp, inner element, and heat sink with each elements of the assembly clipped together. | 11-12-2009 |
| 20090279309 | Circuit board slot for an integral HID reflector lamp - An integral HID reflector lamp may be formed with an HID held in a reflector. An inner element is mechanically coupled to the reflector. The inner element is formed with a first mechanical coupling to mate with the reflector, a second mechanical coupling to mate with a circuit board, and an electrical coupling to at least electrically couple one of the leads to the circuit board. A circuit board has an edge mechanically coupled to the inner element and electrically connected to the leads by an electrical coupling on the inner element. A heat sink spans at least one side of the circuit board and forming an EMI shielding. An outer cover encloses the heat sink, circuit board, and inner element and coupled to the assembly of the reflector, HID lamp, inner element, and heat sink with each elements of the assembly clipped together. | 11-12-2009 |
| 20090279308 | EMI controlled integral HID reflector lamp - An integral HID reflector lamp may be formed with an HID held in a reflector. An inner element is mechanically coupled to the reflector. The inner element is formed with a first mechanical coupling to mate with the reflector, a second mechanical coupling to mate with a circuit board, and an electrical coupling to at least electrically couple one of the leads to the circuit board. A circuit board has an edge mechanically coupled to the inner element and electrically connected to the leads by an electrical coupling on the inner element. A heat sink spans at least one side of the circuit board and forming an EMI shielding. An outer cover encloses the heat sink, circuit board, and inner element and coupled to the assembly of the reflector, HID lamp, inner element, and heat sink with each elements of the assembly clipped together. | 11-12-2009 |
| 20090279304 | Heat sink for integral HID reflector lamp - An integral HID reflector lamp may be formed with an HID held in a reflector. An inner element is mechanically coupled to the reflector. The inner element is formed with a first mechanical coupling to mate with the reflector, a second mechanical coupling to mate with a circuit board, and an electrical coupling to at least electrically couple one of the leads to the circuit board. A circuit board has an edge mechanically coupled to the inner element and electrically connected to the leads by an electrical coupling on the inner element. A heat sink spans at least one side of the circuit board and forming an EMI shielding. An outer cover encloses the heat sink, circuit board, and inner element and coupled to the assembly of the reflector, HID lamp, inner element, and heat sink with each elements of the assembly clipped together. | 11-12-2009 |
| 20090269523 | BRAZING ALLOY AND CERAMIC DISCHARGE LAMP EMPLOYING SAME - There is described a brazing alloy having a first component comprising a source of molybdenum and a source of aluminum and a second component comprising boron, wherein a weight ratio of said second component to said first component is not greater than 1:20. The addition of boron results a substantially lower melting point than alloys employing molybdenum and aluminum alone. It is suitable for use in discharge vessels having a hollow bodies selected from the group of monocrystalline alumina, polycrystalline alumina and aluminum nitride; metallic electrode holders fitted into ends of the hollow body; and sealed thereto by a braze. | 10-29-2009 |
| 20090261732 | Low Loss Input Channel Detection Device for a Direct Current Powered Lighting System - A device used with a direct current power source for energizing a lamp. The device includes a plurality of input channels selectively connected to the power source for providing current to the lamp. For each input channel, the device includes a corresponding current sensing component connected to the input channel, and a corresponding bypass switch connected in parallel with the current sensing component. Each current sensing component produces a measurable signal as a function of current that is provided by the corresponding input channel. The device includes a controller connected to the current sensing components and the bypass switches. The controller identifies the input channel that is providing current to the lamp as a function of the measurable signals and controls the bypass switches based on the identified input channel. Particularly, the controller operates each bypass switch in a closed mode when the corresponding input channel is the identified channel so that current provided by the corresponding identified input channel bypasses the current sensing component. | 10-22-2009 |
| 20090256481 | STAND ALONE LAMP FILAMENT PREHEAT CIRCUIT FOR BALLAST - A lamp filament preheating circuit using modified flyback topology which gives pulsating AC in the secondary of the flyback transformer. The circuit may be controller based or implemented by a monoshot and astable multivibrator. A self-oscillation, parallel resonant current fed half bridge inverter circuit may include an arc sensing circuit. | 10-15-2009 |
| 20090252667 | RARE EARTH-ACTIVATED ALUMINUM NITRIDE POWDERS AND METHOD OF MAKING - Rare earth-activated aluminum nitride powders are made using a solution-based approach to form a mixed hydroxide of aluminum and a rare earth metal, the mixed hydroxide is then converted into an ammonium metal fluoride, preferably a rare earth-substituted ammonium aluminum hexafluoride ((NH | 10-08-2009 |
| 20090230414 | LED LIGHT ENGINE KERNEL AND METHOD OF MAKING THE KERNEL - A light engine kernel for a light emitting diode (LED) includes a solid body of transparent material having an index of refraction of at least 1.5. The body has a domed, light-emitting top that is an inverted parabola of revolution, a reflective sidewall that is a compound parabolic concentrator (CPC), and a cavity at a focus of the CPC that is adapted to receive an LED. The domed top may include a phosphor coating of a yellow-emitting phosphor. The cavity may be adapted to receive only a single LED or plural LEDs of the same or different colors on a board. The kernel and LED are not integrally formed, reducing thermal degradation of the phosphor coating and improving application flexibility. | 09-17-2009 |
| 20090213606 | LED headlamp system - A solid-state light source ( | 08-27-2009 |
| 20090212704 | CERAMIC DISCHARGE VESSEL WITH CHROMIUM-COATED NIOBIUM FEEDTHROUGH AND DISCHARGE LAMP CONTAINING SAME - There is described a lamp having a ceramic discharge vessel with a niobium feedthrough that has been coated with a layer of chromium to provide oxidation resistance. In a preferred method, a slurry containing chromium powder is applied to the niobium feedthrough and dried. A sub-assembly is formed by inserting the coated niobium feedthrough into an annular polycrystalline alumina (PCA) disc and heated in vacuum to 1700° C. to 1900° C. to bond the feedthrough to the PCA and form the sub-assembly and an oxidation-resistant coating on the feedthrough. The sub-assembly is then sealed to a ceramic body of the discharge vessel in a conventional manner. | 08-27-2009 |
| 20090200941 | Control of mercury leaching - A safely disposable, mercury-containing lamp includes a component comprising an effective amount of materials to allow the lamp to safely be disposed of, the materials forming a tri-partite component comprising a divalent manganese compound, a copper containing compound and a compound selected from the group consisting of metallic silver and silver containing compounds. | 08-13-2009 |
| 20090185389 | Light guide for a lamp - A light with one or more LEDs directing light in a first direction. The light has first and second over-lying light guides receiving light from the LEDs. The light guides extend in the first direction X. Plural LEDs can be used and they may direct light from either or both ends of the light guides. The light guides can be clear if the LEDs emit colored light, or colored if the LED emits white light. A plurality of first light deflectors is associated with the first light guide and a plurality of second light deflectors is associated with the second light guide for directing the light that has been emitted from the light source along the first direction X in a second, output direction Y, the first light deflectors being offset from the second light deflectors to evenly distribute output light. | 07-23-2009 |
| 20090160339 | Ceramic Discharge Vessel Having Molybdenum Alloy Feedthrough - A ceramic discharge vessel is described that is provided a feedthrough comprised of a molybdenum alloy containing at least 75 weight percent molybdenum and greater than 5 weight percent of nickel and at least one other alloying metal selected from copper and iron, wherein the weight ratio of the amount of nickel to the combined amount of copper and iron, Ni:(Fe,Cu), in the alloy is in the range of 1:1 to 9:1. The thermal expansion coefficient of the alloy is sufficiently matched to that of the ceramic so that the feedthrough may be sealed to the discharge vessel without causing cracking. Preferably, the feedthrough is directly sealed to the ceramic discharge vessel without the use of an intermediate frit material. | 06-25-2009 |
| 20090134769 | PHOSPHOR BLEND FOR A COMPACT FLUORESCENT LAMP AND LAMP CONTAINING SAME - A phosphor blend for a compact fluorescent lamp is described wherein the phosphor blend comprises a green-emitting Tb | 05-28-2009 |
| 20090129072 | LUMINAIRE - A luminaire comprising an output aperture having an input port and an output port, a radiation guide having an input port and an output port and an array of LEDs located at the input port of the guide. Light emitted by the LEDs is transmitted into the guide. The input port of the aperture operatively connects to the output port of guide and is positioned adjacent thereto so that a central plane of the output aperture is asymmetric relative to a central plane of the radiation guide. | 05-21-2009 |
| 20090121610 | Mercury dispenser, method of making mercury dispenser and method of dosing mercury into ARC discharge lamp - A fluorescent lamp ( | 05-14-2009 |
| 20090086501 | Bending beam headlamp with multi-filament bulb - An automotive headlamp bulb provides the two light or three filament sources in a single bulb. One source may be used to generate a standard headlamp beam, while the second source may be used to generate an augmenting side beam in response to a turning signal. A similar third filament may provide an augmenting beam to the opposite side, or farther to the same side. The single bulb eliminates the need for a second bulb, or a second reflector in an advanced headlamp system with turning light augmentation. | 04-02-2009 |
| 20090086492 | LED lamp with heat sink optic - An LED lamp may be made with a heat sink optic. The lamp has a base having a first electrical contact and a second electrical contact for receiving current. At least one LED is mounted on a thermally conductive support; that supports electrical connections for the LED and provides thermal conduction of heat from the LED to the optic. The LED support mounted in the base and electrically coupled through the first electrical contact to electrical current. The light transmissive, and heat diffusing optic has an external an internal wall defining a cavity with the LED positioned in the cavity. The optic is in thermal contact with the LED support and mechanically coupled to the base. The snap together structure enables rapid manufacture while allowing numerous variations. | 04-02-2009 |
| 20090086478 | Lighting system with removable light modules - A lighting system with removable light modules mounted on a frame by an attractive force between magnetic material of the light module and magnetic material of the frame such that a light module may be installed on, removed from, or relocated on the frame manually without tools or permanent electrical connection. The frame may be one-, two-, or three-dimensional, and it may provide an aesthetic appearance even when the lighting system is not illuminated. The light modules may employ incandescent, quartz-halogen, LED, or fluorescent light sources. Particularly, in LED embodiments, the magnetic materials serve the dual functions of mounting and heat sinking. The lighting system may be utilized as a sign, signaling device, or a building block in larger lighting systems. The lighting system has a wide variety of applications and provides a user with improved ability to control the quantity, direction, and characteristics of the emitted light. | 04-02-2009 |
| 20090085901 | LIGHT EMITTING DIODE DRIVER PROVIDING CURRENT AND POWER CONTROL - As apparatus for controlling operating parameters for a light emitting diode (LED). A driver receives an input voltage from a voltage source and a control signal. The driver provides a driver output current to the LED based on the control signal. The LED has an LED voltage as a function of the driver output current and has an LED power as a function of said LED voltage and said driver output current. A controller determines the LED voltage and produces the control signal provided to the driver as a function of the LED voltage. The control signal corresponds to a constant driver output current when the LED voltage is less than a predetermined voltage value. The control signal corresponds to a varying driver output current for substantially maintaining the LED power at a constant predetermined power value web the LED voltage is greater than the predetermined voltage value. | 04-02-2009 |
| 20090085501 | CONSTANT CURRENT DRIVER CIRCUIT WITH VOLTAGE COMPENSATED CURRENT SENSE MIRROR - A current sensing circuit for sensing the current provided to LEDs by a constant current power source includes a resistive shunt in series with the load and a current mirror having a first leg connected to a first terminal of the resistive shunt and a second leg connected to a second terminal of the resistive shunt. Both legs of the current mirror are also connected to ground. The first leg provides a reference signal to the second leg, and the second log uses the reference signal and a voltage at the second terminal of the resistive shunt to provide a ground referenced output signal indicative of the current provided to the LEDs. | 04-02-2009 |
| 20090085456 | Automotive lamp coil - Traditional methods of making headlamp coils have left a portion of the coils with slightly irregular forms. These irregularities can result in defects in the ultimate beam pattern. Accommodating these defects in robust lamp and headlamp optical systems can reduce the performance that might otherwise be available. The preferred coil is therefore continuously coiled as a straight body, and carefully cut into segments. Subsequently, legs are welded to the coil segment ends. The coil is then left substantially undistorted by the manufacturing process that would otherwise normally leave a portion of the coils distorted. The method particularly enables a functional center leg coil. | 04-02-2009 |
| 20090085455 | Metal Halide Reflector Lamp with Beam Color Homogenizer - A novel metal halide reflector lamp is described wherein the reflector lamp has a passive optical element to scramble, color mix, and otherwise commingle the light emitted by the metal halide burner. The optical element is placed close to the radiating plasma volume to intercept a large solid angle. Preferably, the optical element substantially intercepts the emitted light within a solid angle that has its vertex at the center of the discharge volume of the burner and is subtended by the open end of the reflector. The optical element can be designed to scatter, reflect or refract the light emanating in this solid angle which otherwise would not impinge on the primary optical control surface of the reflector. | 04-02-2009 |
| 20090079366 | FAST RUN-UP OF METAL HALIDE LAMP BY POWER MODULATION AT ACOUSTIC RESONANCE FREQUENCY - A method of controlling run-up of a metal halide lamp that has a nominal (full) light output during steady state operation and that has a current limit I | 03-26-2009 |
| 20090079365 | CONTROL METHOD AND BALLAST FOR RUN-UP OF METAL HALIDE LAMP - A method of controlling run-up of a metal halide lamp that has a nominal (full) light output during steady state operation and that has a current limit I | 03-26-2009 |
| 20090079112 | Method of Sintering AlN Under a Methane-containing Nitrogen Atmosphere - The present method uses a methane-containing nitrogen gas sintering atmosphere to sinter aluminum nitride (AlN) to a high transmittance. The methane gas replaces the solid carbon charge material used in prior art sintering methods as the source of gaseous carbon. The amount of carbon in the methane-containing nitrogen gas is easily controlled by varying the partial pressure of methane in the nitrogen gas. In addition, the methane flow is stopped prior to the end of the sintering cycle to prevent darkening of the sintered part. | 03-26-2009 |
| 20090072740 | Hid lamp with rapid relight aid - The restrike time for re-light up of an arc discharge lamp may be decreased by including at least one refractory bimetallic start up electrode that provides a shorter arc path intermediate the main arc path in a cool state, but when heated withdraws to have a relatively longer arc path. The longer arc path in the hot state results in a relatively higher path impedance that can be used by itself or in combination with a supplemental impedance device to extinguish the starting arc in favor of the main arc. The withdrawn bimetallic starting electrode then does not interfere with the main arc function. | 03-19-2009 |
| 20090069168 | Method of Converting PCA to Sapphire and Converted Article - Polycrystalline alumina (PCA) that has been doped with magnesium oxide is converted to sapphire by additionally doping the PCA with boron oxide and sintering to induce abnormal grain growth. The boron oxide may be added to an already formed green PCA ceramic shape by applying an aqueous boric acid solution to the green ceramic and heating the green ceramic in air to convert the boric acid to boron oxide. | 03-12-2009 |
| 20090066251 | Ceramic Discharge Vessel Having an Opaque Zone and Method of Making Same - An opaque zone in the polycrystalline (PCA) discharge vessel of a high intensity discharge lamp may be made by creating residual pores in predetermined regions of the final-sintered discharge vessel. The control over the placement of the opaque zone is achieved by forming a carbonaceous residue in a specific region of the discharge vessel prior to final sintering. During sintering, the carbonaceous material causes residual porosity in the sintered PCA. The higher emissivity of the opaque PCA provides localized cooling in order to provide more control over the condensate behavior in the discharge vessel. | 03-12-2009 |
| 20090058300 | Short metal vapor ceramic lamp - A high intensity arc discharge lamp having a short metal seal plug running hotter than typical of capillary seals, enables a lamp with a metal fill to achieve a vapor pressure higher than the one set by the cold spot temperature typically of a capillary seal lamp. Corrosive fill materials, such as halogens are excluded. Zinc may be used to in starting the lamp. | 03-05-2009 |
| 20090045719 | Odor neutralizing fluorescent sunlamp - A fluorescent tanning lamp having a glass envelope has an ultra-violet light reflecting coating covering at least 180° of an inside surface of the envelope; and a phosphor layer covering substantially 360° of the inside surface of the envelope, including overlying the ultra-violet reflecting coating. An odor reducing photocatalytic material is provided on an outside surface of the envelope, the photocatalytic material being coextensive with the ultra-violet light reflecting material. A preferred material is anatase TiO | 02-19-2009 |
| 20090045717 | Lamp base - A special purpose lamp ( | 02-19-2009 |
| 20090039803 | OUTER JACKET LEAK DETECTION METHOD AND BALLAST IMPLEMENTING THE METHOD - A method of detecting a leak in an outer jacket of a metal halide lamp having an arc tube inside the outer jacket and operated by a ballast, where the ballast monitors an electrical characteristic of the lamp during start and detects a leak in the outer jacket when the electrical characteristic deviates from that of a corresponding metal halide lamp whose outer jacket does not have a leak. The electrical characteristic is one of six markers, namely (1) V′(E) at a predetermined E, where V′(E) is a derivative of lamp voltage V as a function of cumulative energy E delivered to the ballast since ignition, (2) a value of E at which V′(E) reaches a maximum, (3) V at a predetermined E, (4) a local maximum of V′(E) up to a predetermined E, (5) a global maximum of V′(E), and (6) E required to achieve a predetermined V. | 02-12-2009 |
| 20090034278 | LED Headlamp System - A vehicle headlamp includes a first planar array of low and high beam LED light sources; a first primary optical light guide receiving low and high beam light from the LEDs; a first secondary optical light guide receiving and focusing collimated low and high beam light from the first primary light guide as a combination of low and high beam hot spots; a second planar array of LED light sources having a low and high beam LEDs; a second primary optical light guide receiving and collimating low and high beam light from second LED light sources; a second secondary optical light guide receiving said collimated low and high beam light and spreading the light as a combination of low and high beam spread pattern; a housing to mechanically support the LED arrays, the first primary optic, the first secondary optic, the second primary light guide and the second secondary optic. | 02-05-2009 |
| 20090034241 | DECORATIVE LIGHT TILE - A decorative light tile includes a base, a light source adjacent to the perimeter of the base positioned to illuminate at least a slanted light reflecting area of the base, and a cover mounted on the base adapted to be illuminated by light from the light source reflected off the slanted light reflecting area. Additionally, the light tile includes a bus bar system. The bus bar system includes positioned along a perimeter of the light tile. The bus bar system is electrically connected to the light source and provides a circuit for supplying power to the light source. A light tile system includes a plurality of light tiles, a decorative sheet positioned adjacent to each light tile and illuminated by the light source within the light tile, and a power supply. Each light tile includes a bus bar system connected to a light source within the light tile and the light tiles may be positioned contiguous to each other so that the bus bar systems are in electrical contact with each other. | 02-05-2009 |
| 20090033236 | Programmed ballast with resonant inverter and method for discharge lamps - A ballast having a rapid inverter frequency control circuit that is used for programmed operation during lamps starting, during normal operation of all lamps and during no lamp(s) operation. A method and circuit controls frequency shift via a combination of different feedback circuits. A control signal for the inverter controller is synthesized as a sum of phase shifted inverter output voltage feedback signal and lamp current sense signal indicating status of each lamp connected to the ballast output. | 02-05-2009 |
| 20090033193 | HID LAMP WITH FRIT SEAL THERMAL CONTROL - A method of making an HID lamp and an HID lamp that includes a ceramic envelope with a ceramic capillary, wherein the capillary has an electrode feed-through therein that is sealed inside the capillary by a frit seal that extends inside the capillary a first distance from a distal end of the capillary, and a ceramic heat sink around at least half an external diameter of the capillary, wherein the heat sink is separated from the envelope and from the distal end of the capillary and the heat sink is in thermally conductive contact with the capillary and has an external diameter at least 1.5 times the external diameter of the capillary. In one preferred embodiment, the heat sink does not overlap the frit seal. | 02-05-2009 |
| 20090026960 | RELAMPING CIRCUIT FOR BATTERY POWERED BALLAST - A ballast (e.g. a fluorescent light ballast) includes a primary ballast for powering the lamp from a power supply (e.g., utility line power) and an battery powered ballast for powering the lamp from a battery when the primary power supply is not energized by the power supply. When power supply power is restored to the ballast, the ballast shuts down the battery powered ballast and a switch circuit operably connects the lamp to the primary ballast. The ballast toggles the switch circuit such that the primary ballast detects replacement of a lamp and resets any fault detection or protection circuits (e.g., an end of lamp life circuit) that may have been triggered during the transition from battery power to power from the power supply. | 01-29-2009 |
| 20080278088 | Ballast With Ignition Voltage Control - A ballast ( | 11-13-2008 |
| 20080278085 | Program Start Ballast - A ballast ( | 11-13-2008 |
| 20080278080 | Ballast With Filament Heating And Ignition Control - A ballast ( | 11-13-2008 |
| 20080272695 | Lamp capsule retainer - A lamp assembly ( | 11-06-2008 |
| 20080252224 | Ballast with Socket-To-Fixture Voltage Limiting - A ballast ( | 10-16-2008 |
| 20080246409 | Power Supply for Halogen Lamp - A circuit ( | 10-09-2008 |
| 20080226903 | METHOD FOR MAKING A LIGHT EMITTING DIODE HAVING A P-N JUNCTION DOPED WITH ONE OR MORE LUMINESCENT ACTIVATOR IONS - A light emitting diode (LED) includes a p-n junction containing luminescent activator ions. The visible emission from the activator ions preferably complementing the band edge emission of the LED in order to produce an overall white emission from the LED. In a preferred embodiment, the LED has double heterojunction structure having a semiconductor active layer between two confinement layers. The semiconductor active layer includes activator ions preferably selected from among Eu | 09-18-2008 |
| 20080223175 | Method of Making Nanocrystalline Tungsten Powder - There is described a method of making a nanocrystalline tungsten powder that comprises: (a) heating a tungsten-containing material in a reducing atmosphere at an intermediate temperature of from about 600° C. to about 700° C. for an intermediate time period; the tungsten-containing material being selected from ammonium paratungstate, ammonium metatungstate or a tungsten oxide; and (b) increasing the temperature to a final temperature of about 800° C. to about 1000° C. for a final time period. | 09-18-2008 |
| 20080213153 | Method of Making Red-Emitting Borate Phosphor - There is described a method of producing a red-emitting manganese and cerium co-activated gadolinium magnesium zinc pentaborate phosphor that comprises combining a hydrated hexaborate of zinc, magnesium, and manganese with oxides of Gd and Ce to form a mixture, and firing the mixture in a slightly reducing atmosphere to form the phosphor. Preferably, the hydrated hexaborate has an approximate composition represented by (Zn,Mg,Mn)B | 09-04-2008 |
| 20080213152 | Method of Producing UV-Emitting Magnesium Pentaborate Phosphors - A method of producing a UV-emitting magnesium pentaborate phosphor is described. The method comprises combining a hydrated magnesium hexaborate with oxides of Y, Gd, Ce and Pr to form a mixture and firing the mixture in a slightly reducing atmosphere to form the phosphor. The hydrated magnesium hexaborate, which is preferably prepared as a precipitate, preferably has a formula MgB | 09-04-2008 |
| 20080210904 | Method of Making Green-Emitting Borate Phosphors - There is described a method for the preparation of a green-emitting terbium and cerium co-activated gadolinium magnesium pentaborate phosphor that utilizes a hydrated magnesium hexaborate as a boron source. The hydrated magnesium hexaborate preferably may be represented by the formula MgB | 09-04-2008 |
| 20080203921 | Single-ended Ceramic Discharge Lamp - A single-ended ceramic discharge lamp is described which has an integral optical surface such as a parabolic or elliptical reflector. The single-ended configuration eliminates the need for the mounting structures found in double-ended lamps that can interfere with the light emitted from the lamp, particularly in focused beam applications. | 08-28-2008 |
| 20080203916 | Ceramic Discharge Vessel Having a Sealing Composition - A sealing composition for ceramic discharge vessels is described. The sealing composition contains about 20 to about 40 mole percent MgO, about 20 to about 45 mole percent Y | 08-28-2008 |
