| HARISON TOSHIBA LIGHTING CORP. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120106127 | LIGHT EMITTING DEVICE - A light emitting device includes a light source capable of emitting emission light, a first phosphor layer and an optical waveguide. A first phosphor layer has at least a first surface and a second surface on an opposite side of the first surface, extends in a light guiding direction, and is capable of absorbing the emission light and emitting first wavelength converted light having a longer wavelength than the emission light. The optical waveguide has a reflector. And the optical waveguide has an input surface of the emission light, a reflection surface being in contact with the first surface of the first phosphor layer and provided on a surface of the reflector, and an output surface spaced from the first phosphor layer. The reflection surface and the output surface extend in the light guiding direction. | 05-03-2012 |
| 20120075326 | BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - According to an embodiment, a backlight device includes a plurality of light guide plates, a plurality of light sources and a light-source substrate. The light guide plates overlap each other with a same light output direction; each of the light guide plates includes a plurality of stripe-shaped projections aligned on a light output face and a light output pattern. Each of the light sources emits light incident into any one of the light guide plates and propagating in an extending direction of the stripe-shaped projections. The light-source substrate includes a plurality of interconnections, a turning-on signal is selectively supplied via the interconnections to at least one of light source groups, and each of the light source groups includes at least one of the light sources. At least one part of a light emission face, including the light output faces, emits light output from the light source group receiving the turning-on signal. | 03-29-2012 |
| 20110260613 | METAL HALIDE LAMP - Disclosed is a metal halide lamp, comprising an airtight tube having a discharge portion with a discharge space therein and a pair of sealing portions formed at both ends of the discharge portion; a discharge medium substantially free from mercury enclosed in the discharge space, the discharge medium including a rare gas and a metal halide, the metal halide including a scandium halide; metal foils sealed in the sealing portions; a pair of electrodes having one ends connected to the metal foils and the other ends arranged to face each other within the discharge space; and coils wound around the electrodes within the sealing portions, wherein the scandium halide has a weight ratio of not less than 30%, and the coils have an outer diameter R of not less than 0.45 mm but not more than 0.60 mm. | 10-27-2011 |
| 20110216554 | LIGHT EMITTING DEVICE - An embodiment of the invention provides a light emitting device in which a semiconductor laser diode is used as a light source to efficiently obtain visible light having high uniformity of a luminance distribution. The light emitting device has a semiconductor laser diode that emits a laser beam. And the device has a light guide component that includes an upper surface, a lower surface, two side faces opposite each other, and two end faces opposite each other, the laser beam being incident from a first end face of the light guide component, the light guide component having indentation in the lower surface, the laser beam being reflected by the lower surface and emitted in an upper surface direction. The light emitting device also has a luminous component that is provided on an upper surface side of the light guide component and absorbs the laser beam emitted from the light guide component and emits visible light. And the device has a substance that is in contact with the lower surface and two side faces of the light guide component, a refractive index of the substance being lower than that of the light guide component. | 09-08-2011 |
| 20110032724 | LIGHT EMITTING DEVICE AND METHOD FOR MANUFACTURING SAME, LIGHTING FIXTURE, AND LIGHTING SYSTEM - A light emitting device includes: a light emitting element; a substrate including a groove-like light guide extending along a first direction, emission light emitted from the light emitting element and introduced into the light guide being reflected by an inner wall surface of the light guide, spreading along the first direction, and being turned into upward light directed upward above the substrate; and a lens provided above the light guide and configured to collect the upward light and control light distribution characteristic in a plane generally perpendicular to the first direction. | 02-10-2011 |
| 20110007506 | LIGHTING APPARATUS - A thin, linear or planar lighting apparatus with a hollow cavity having a uniform luminance distribution over a lighting surface. The lighting apparatus includes a light source configured to emit light having a narrow-angle light intensity distribution characteristic, a diffuser plate disposed in a position spaced apart by a predetermined distance from an optical axis of the light emitted from the light source, and a reflection member. The reflection member includes a level surface substantially parallel to the optical axis and an inclined surface inclined to the optical axis at a predetermined angle so that a uniform illuminance distribution over a lighting surface is achieved. A hollow region is formed between the diffuser plate and the reflection member, and the diffuser plate is illuminated with light reflected off the level surface and the inclined surface via the hollow region. | 01-13-2011 |
| 20100315003 | AUTOMOTIVE DISCHARGE LAMP - Disclosed is an automotive discharge lamp, comprising an inner tube ( | 12-16-2010 |
| 20100270921 | DISCHARGE LAMP - A discharge lamp includes an airtight tube including a light-emitting unit in which a space is formed and seal portions formed at least on one end of the light-emitting unit, a discharge medium including a metal halide and a rare gas sealed in the light-emitting unit, a metal foil sealed into the seal portion, and a pair of electrodes one ends of which are overlapped and connected to the metal foil and the other ends of which are provided such that they are led into the space of the light-emitting unit and arranged in opposition to each other. A concavity is formed on at least a portion of the back surface side of the metal foil on which the electrode is overlapped, and a compression distortion is formed on the seal portion in the vicinity of the concavity. | 10-28-2010 |
| 20100265167 | LIGHT EMITTING APPARATUS AND DISPLAY APPARATUS USING LIGHT EMITTING APPARATUS - A light emitting apparatus according to the present invention having an illuminant surface and configured to be able to adjust brightness for each of a plurality of divided areas of the illuminant surface, includes: an LD chip as a light source including a plurality of light emitting elements that can be independently driven, and configured to emit light from the plurality of light emitting elements; a plurality of fiber waveguide portions each coupled to at least one of the plurality of light emitting elements and configured to transmit light from the at least one of the plurality of light emitting elements coupled; and a plurality of minute wavelength conversion members each placed for each of the areas, configured to take in the light transmitted via corresponding fiber waveguide portions, and emit the taken-in light. | 10-21-2010 |
| 20100246159 | LIGHT EMITTING DEVICE AND METHOD FOR MANUFACTURING THE SAME - A light emitting device, includes: a casing; a window; a semiconductor laser provided in an enclosed space formed by the casing and the window; and a fluorescent material in a form of any one of a crystal and glass, the fluorescent material being provided in the enclosed space, the fluorescent material absorbing laser light emitted from the semiconductor laser and emitting secondary light having a wavelength different from a wavelength of the laser light, and the secondary light being taken out through the window. | 09-30-2010 |
| 20100188838 | ILLUMINATING APPARATUS - A peak of the radiation directivity of light emitted by each of LEDs is directed to a reflecting surface, and the light emitted by the LEDs is indirectly incident on an outer lens after reflection by the reflecting surface. Thus, problems, such as a local increase in brightness of a light emitting surface over areas corresponding to light emitting portions of the LEDs, are prevented. In addition, most of the light emitted by the LEDs is indirectly incident on the outer lens via the reflecting surface, so that dispersion of blue light and yellow light, which constitute the white light, by the outer lens is prevented. Thus, illumination light highly uniform in amount and color can be provided. | 07-29-2010 |
| 20100135036 | VEHICLE LIGHTING DEVICE - An optical axis O′ of a lens section of an optical member is inclined downward relative to a horizontal direction (an optical axis O of each LED) from a light emitting section of each LED. Therefore, an area at and below a horizontal position of a lighting device is illuminated by the lens section while each LED is arranged at an optically ideal position relative to the lens section. Also, reflection surfaces of upper and lower reflector sections and of the optical member are respectively set based on parabolas P | 06-03-2010 |
| 20100072892 | HEATER LAMP - A halogen lamp including a glass bulb, a filament inserted inside the bulb, a pair of metal foils, and a pair of outer leads. Each metal foil has one end welded to the filament and the other end welded to the outer lead. The metal foils are contained in glass sleeves and they are collectively inserted inside the bulb. The bulb is softened by heating and shrinks because its inside pressure is reduced to seal the metal foils therein. Since the amount of glass of each sealed portion is larger than the other portions of the bulb by the amount of the sleeve, the shape of the sealed portion is stabilized. | 03-25-2010 |
| 20100045184 | METAL HALIDE LAMP - A metal halide lamp is comprised of an airtight tube ( | 02-25-2010 |
| 20100027256 | OPTICAL ELEMENT FOR ARRAYED LIGHT SOURCE AND LIGHT EMITTING DEVICE USING THE SAME - An optical element for arrayed light source has a bar-like optical element and a light guide portion, which is a bar-like part formed on an incident portion side of the optical element portion, has a totally reflecting portion which causes emitted light from each of a plurality of LED that has an angle not less than a prescribed angle relative to an optical axis plane of the optical element portion to be totally reflected toward a plurality of concavo-convex reflecting portions provided between two LEDs adjacent to each other, the plurality of LEDs being arranged in a linear manner or an annular manner. The light guide portion guides, to the incident portion of the optical element portion, light reflected in each of the plurality of concavo-convex reflecting portions and emitted light that has an angle less than the prescribed angle. | 02-04-2010 |
| 20100025722 | LIGHT EMITTING DEVICE, ITS MANUFACTURING METHOD AND ITS MOUNTED SUBSTRATE - A light emitting device according to the invention includes: a package including a generally quadrangular light emitting surface with a recess formed therein, a rear surface opposed to the light emitting surface, a first side surface generally orthogonal to the light emitting surface and the rear surface, and a second side surface opposed to the first side surface; and a light emitting element provided in the recess. At least one of the first side surface and the rear surface include a first and second feeder electrode surfaces and a mounting surface provided between the first feeder electrode surface and the second feeder electrode surface. A step difference is provided between the first feeder electrode surface and the mounting surface, and a step difference is provided between the second feeder electrode surface and the mounting surface. The first and second feeder electrode surfaces are set back from the mounting surface adjacent thereto. This structure is possible to make a light emitting device high in brightness and thin in thickness. | 02-04-2010 |
| 20090290336 | LIGHTING DEVICE AND LIGHTING SYSTEM - A light shielding mask | 11-26-2009 |
| 20090245847 | FIXER DRIVING DEVICE AND FIXER DRIVING METHOD - A voltage detecting circuit | 10-01-2009 |
| 20090243503 | DISCHARGE LAMP LIGHTING DEVICE - A discharge lamp lighting device includes: a first series circuit unit in which a primary coil is connected in series to a capacitor; a second series circuit unit in which a secondary coil is connected in series to a discharge lamp, the secondary coil being a winding wound on the side portion of a rod-shaped magnetic core along the axial direction of the magnetic core, being greater in the number of turns than the primary coil, being smaller in dimension of its cross section parallel to the axial direction of the magnetic core than in dimension of its cross section in the radial direction of the magnetic core and forming a transformer along with the primary coil; and a bridge DC-AC converting circuit which includes four transistors, converts DC voltage supplied from a power supply unit to AC voltage and supplies the AC voltage to both ends of the first and the second series circuit units connected in parallel to each other, and the discharge lamp lighting device being capable of generating voltage by a small and simple circuit at the time of starting the lamp and performing preheating control. | 10-01-2009 |
| 20090160340 | DIELECTRIC BARRIER DISCHARGE LAMP LIGHTING DEVICE - A dielectric barrier discharge lamp | 06-25-2009 |
| 20090079348 | DISCHARGE LAMP LIGHTING APPARATUS AND DISCHARGE LAMP LIGHTING CONTROL METHOD - A chopper circuit generates a voltage to be supplied to a primary side of a transformer, and an inverter circuit supplies an output voltage of the chopper circuit to the primary side of the transformer in a positive phase or a negative phase. Thereby, an electric-discharge lamp connected to a secondary side of the transformer is lighted. A controlling section detects a lamp current, and thereby determines a type of the electric-discharge lamp. The controlling section decides the control value optimal for the chopper circuit and the inverter circuit on the basis of the determination result. The controlling section controls the chopper circuit and the inverter circuit with the decided control value. Thereby, the lighting device drives the electric-discharge lamp in an optimal state. For instance, the lighting device always makes the electric-discharge lamp lighting in a 100% light-modulated state regardless of its type. | 03-26-2009 |
