| Patent application number | Description | Published |
|---|
| 20080203945 | Describing Two Led Colors as a Single, Lumped Led Color - A light emitting diode (LED) lighting system for producing white light is disclosed. The system comprises sets of LEDs arranged to emit light with different wavelength ranges and associated with different sets of characteristics, and a driving circuit arranged to drive the LEDs. The driving circuit comprises an input for desired light intensity, color rendering index, and color temperature, an input for signals for LED temperature, a model for determining driving currents for said sets of LEDs from said parameters, signals, and characteristics for each of said sets of LEDs; and a current driver for the LEDs. At least one of the sets of LEDs comprises a first subset of LEDs with a first wavelength sub-range and a first set of characteristics, and a second subset of LEDs with a second wavelength sub-range and a second set of characteristics. A lumped wavelength range of the set of LEDs is a range of said first and second wavelength sub-ranges, and the set of characteristics of the set of LEDs is a function of said first and second sets of characteristics. A method for controlling the sets of LEDs is also disclosed. | 08-28-2008 |
| 20080272712 | Variable Color Light Emitting Device and Method for Controlling the Same - The present invention relates to a variable color light emitting device ( | 11-06-2008 |
| 20080278061 | Light Emitting Diode Module - The present invention relates to a LED module ( | 11-13-2008 |
| 20080290251 | Led Lighting System and Control Method - The present invention relates to a light emitting diode (LED) lighting system ( | 11-27-2008 |
| 20080290354 | Light Emitting Diode Assembly - A light emitting diode (LED) assembly, comprising a metal substrate ( | 11-27-2008 |
| 20080310151 | Illuminat System - An illumination system has linear array of light emitters (R,G,B,A,W) associated with it least one linear array of outcoupling means (O | 12-18-2008 |
| 20090027891 | BEAM SHAPERS USING ELECTRICALLY CONTROLLABLE SCATTERING - The present invention relates to a device ( | 01-29-2009 |
| 20090078948 | ILLUMINATOR AND METHOD FOR PRODUCING SUCH ILLUMINATOR - The present invention relates to an illuminator ( | 03-26-2009 |
| 20090201677 | HIGH EFFICIENCY LED LIGHT SOURCE ARRANGEMENT - A light source ( | 08-13-2009 |
| 20090212709 | LED Luminaire With Optical Feedback By Image Mapping On Segmented Light Sensors - The present invention relates to a luminaire comprising an array of LEDs emitting light of at least one colour, and a control system for controlling the light output of the luminaire. The control system comprises photosensor array for detecting light output of the luminaire. An imaging unit is arranged in front of the photosensor array such that it maps an image of said array of LEDs on said photosensor array. The photosensor array is divided into subareas each detecting light output from a single one of the LEDs. The control system uses the output of the subareas for controlling the luminaire light output. Thus, it is possible to act on different LED light colours or the light output of individual LEDs without having to separate them in time by means of a time pulsing method. | 08-27-2009 |
| 20090237003 | FEEDBACK CONTROLLED ILLUMINATION SYSTEM HAVING AN ARRAY OF LEDS, AND A DETECTOR AMONG THE LEDS - The present invention relates to an illumination system having an array of differently coloured LEDs, a plurality of collimators, wherein each collimator holds at least one LED, a light mixing element, arranged to mix light generated by the LEDs into a mixed light that is emitted from the illumination system, and a control system for controlling the colour balance of the mixed light. The control system comprises a detector, which is placed among said collimators and encircled by a light shield. The detector detects a fraction of the mixed light that is reflected at an exit window of the mixing element. In this structure the detected light twice passes the mixing element, which provides for a proper mixing of the different colours as well as a proper homogenisation of the light. | 09-24-2009 |
| 20090262536 | ILLUMINATION SYSTEM - An illumination system has a plurality of light emitters (R | 10-22-2009 |
| 20090283780 | ILLUMINATION SYSTEM - An illumination system has a mounting substrate ( | 11-19-2009 |
| 20100007600 | METHOD FOR LIGHT EMITTING DIODE CONTROL AND CORRESPONDING LIGHT SENSOR ARRAY, BACKLIGHT AND LIQUID CRYSTAL DISPLAY - It is presented a method for controlling a light level of light emitting diodes, LEDs, comprised in a light sensor segment comprising a light sensor and a plurality of LEDs, the method comprising the steps of: turning on all LEDs in an LED segment, comprising at least one of the plurality of LEDs, detecting a light level associated with the LED segment, by detecting a light level using the light sensor, repeating the steps of turning on all LEDs in an LED segment and detecting a light level, until all of the plurality of LEDs are turned on, and for each LED of the plurality of LEDs, controlling a light intensity of the each LED of the plurality of LEDs, the intensity control depending on the detected light level associated with an LED segment containing the each LED of the plurality of LEDs. A corresponding light sensor array, backlight for a display system and liquid crystal display are also presented. | 01-14-2010 |
| 20100010593 | SYSTEM OF PLASTER AND RADIATION DEVICE - The invention relates to a compact, comfortably wearable system ( | 01-14-2010 |
| 20100067214 | ILLUMINATION SYSTEM AND DISPLAY DEVICE - The invention relates to an illumination system, a luminaire and a display-device ( | 03-18-2010 |
| 20100142182 | ILLUMINATION SYSTEM - The invention provides an illumination system comprising a light-emitting device which excites a first luminescent element, which forms part of the light-emitting device. The light emitted from the first luminescent element and/or the light emitted by the light-emitting device excite a second luminescent element, physically separated from the light-emitting device. By employing two luminescent elements, the first element in the light-emitting device, and the second element physically separated from the light-emitting device, such as on a cover plate, the conversion of light produced by the light-emitting device is performed at both a “local” and a “remote” location, respectively, and the amount of luminescent material required at the remote location may be reduced compared to the situation of the prior art where the light conversion was only performed at a remote location. | 06-10-2010 |
| 20100172120 | COLOR-TUNABLE ILLUMINATION SYSTEM - The invention relates to a color-tunable illumination system ( | 07-08-2010 |
| 20100271828 | LIGHT-EMITTING DEVICE AND METHOD FOR ITS DESIGN - A small and bright light-emitting device, comprising an outer boundary lens surface and at least one LED, is achieved by carefully choosing the inclination of each surface portion of the outer lens surface with respect to the chip size of the light source. The inclination of the surface portions are chosen such that the lens provides an optimal weighing between size and light efficiency. | 10-28-2010 |
| 20100277673 | DISPLAY DEVICE AND ILLUMINATION DEVICE - The invention especially provides a display device ( | 11-04-2010 |
| 20100328925 | ILLUMINATION DEVICE WITH LED AND A TRANSMISSIVE SUPPORT COMPRISING A LUMINESCENT MATERIAL - The invention provides an illumination device ( | 12-30-2010 |
| 20100328926 | ILLUMINATION DEVICE WITH LED AND ONE OR MORE TRANSMISSIVE WINDOWS - The invention provides an illumination device ( | 12-30-2010 |
| 20110063834 | LIGHTING DEVICE - A lighting device ( | 03-17-2011 |
| 20110095328 | CLOSE PROXIMITY COLLIMATOR FOR LED - A method for the manufacture of a light emitting device is provided. The method comprises the steps of: providing a substrate ( | 04-28-2011 |
