Patent application number | Description | Published |
20120106188 | LIGHT EMITTING DEVICE, ILLUMINATION DEVICE, VEHICLE HEADLAMP, AND VEHICLE - A headlamp of an embodiment of this invention includes a laser element, a light emitting section, and a parabolic mirror. A part of the parabolic mirror is provided so as to face an upper surface of the light emitting section, which upper surface has a larger area than that of a side surface of the light emitting section. The light emitting section emits fluorescence in such a manner that distribution of the fluorescence corresponds to the Lambertian distribution. | 05-03-2012 |
20120106189 | LIGHT EMITTING DEVICE, VEHICLE HEADLAMP, AND ILLUMINATION DEVICE - A headlamp of one embodiment of this invention includes a laser element for emitting a laser beam, a light emitting section for generating fluorescence upon receiving the laser beam, and a reflecting mirror for projecting the fluorescence. Distribution of the fluorescence emitted by the light emitting section corresponds to Lambertian distribution, and an incident angle of the laser beam with respect to an excitation light irradiated surface, which is a surface of the light emitting section irradiated with the laser beam, is set so that use efficiency of the fluorescence emitted by the light emitting section is increased. | 05-03-2012 |
20120275134 | LIGHT PROJECTION UNIT AND LIGHT PROJECTION APPARATUS - A light projection unit capable of improving light use efficiency is provided. This light projection unit includes: a fluorescent member that includes an illuminated surface to which laser light is directed, converts at least part of the laser light into fluorescent light and outputs the fluorescent light from chiefly the illuminated surface; and a reflection member that includes a first reflection surface which reflects the fluorescent light output from the fluorescent member. The illuminated surface of the fluorescent member is inclined with respect to a predetermined direction in such a way that the illuminated surface faces in a direction opposite to a light projection direction. | 11-01-2012 |
Patent application number | Description | Published |
20100053996 | LIGHT GUIDE WITH REFLECTANCE ENHANCEMENT AND LIGHTING SYSTEM INCLUDING THE SAME - According to an aspect of the invention, a light guide is provided which includes a light guide substrate having a top surface through which light is to be emitted, a bottom surface, an incident edge surface through which incident light is to be introduced into the light guide substrate, and another edge surface. The another edge surface includes at least one micro structure operative to reflect at least a portion of the incident light, which travels through the light guide substrate and is incident on the another edge surface, back within the light guide substrate. | 03-04-2010 |
20100142223 | BACKLIGHT AND DISPLAY - A backlight is provided for illuminating an at least partially transmissive display. The backlight includes a light source. A light guide receives the light from an edge surface and guides the light by total internal reflection. Groove structures which are located on at least one of the major surfaces of the light guide permit redistribution of light around obstacles that may be present within the light guide structure, thereby maintaining brightness uniformity of the backlight or illumination panel. | 06-10-2010 |
20110193822 | ELECTRICALLY SWITCHABLE FIELD OF VIEW FOR EMBEDDED LIGHT SENSOR - A display device for detecting light includes a display surface, at least one light sensitive element arranged behind the display surface, and a liquid crystal element arranged between the display surface and the at least one light sensitive element. The liquid crystal element is operative to polarization shift light incident on the at least one light sensitive element based on an orientation of the plurality of molecules. The display device further includes at least one electrode operative to change an orientation of the plurality of molecules. The at least one electrode is patterned to define a geometry of at least one field of view of the at least one light sensitive element. A controller is electrically coupled to the at least one electrode, wherein the controller is configured to apply a voltage to the at least one electrode to effect selection of the at least one field of view. | 08-11-2011 |
20120298178 | PHOTOVOLTAIC SYSTEM FOR EFFICIENT SOLAR RADIATION COLLECTION AND SOLAR PANEL INCORPORATING SAME - A concentrated photovoltaic system includes a photovoltaic cell; a primary light concentrating optic; and a secondary light mixing concentrator. The primary light concentrating optic is arranged to collect solar radiation and concentrate the collected solar radiation towards the secondary light mixing concentrator. The secondary light mixing concentrator is arranged to concentrate the concentrated solar radiation from the primary light concentrating optic towards the photovoltaic cell. The secondary light mixing concentrator includes a dielectric member having first and second primary surfaces, with the second primary surface being in optical contact with the photovoltaic cell and the first primary surface facing the primary light concentrating optic. The first primary surface has a non-planar surface structure configured to redirect light which is reflected at transitional surfaces between the secondary light mixing concentrator and the photovoltaic cell back towards the photovoltaic cell. | 11-29-2012 |
20130320863 | LIGHTING DEVICE AND A LIGHTING SYSTEM - A lighting device comprises a plurality of light sources ( | 12-05-2013 |
20140029279 | HEADLIGHT SYSTEM INCORPORATING ADAPTIVE BEAM FUNCTION - A light source system comprising projection optics, which are capable of producing a far-field image of a light source. The light source comprises a fluorescent medium that when illuminated by light from laser emitters of a first waveband emits light of a second or more wavebands of longer wavelength. The resulting light emission produces a colour perceived as white. The light source is illuminated by a plurality of laser emitters arranged to illuminate the light source in an array-like manner. Control of the output of one or more of the laser emitters results in a variation of the spatial emission distribution from the light source and hence a variation of the far-field beam spot distribution. Further, fine variation of the far-field beam spot distribution may be achieved by re-direction of the laser beams by separate control methods. | 01-30-2014 |
20140029280 | HEADLIGHT SYSTEM INCORPORATING ADAPTIVE BEAM FUNCTION - A light source system comprising a projection lens, which is capable of producing a far-field image of a light source. The light source comprises a photoluminescent material that when illuminated by light from laser emitters of a first waveband emits light of a second or more wavebands of longer wavelength. The resulting light emission produces a colour perceived as white. The light source is illuminated by a plurality of laser emitters arranged to illuminate the light source in an array-like manner from the front side. Control of the output of one or more of the laser emitters results in a variation of the spatial emission distribution from the light source and hence a variation of the far-field beam spot distribution via non-mechanical means. An optical system is arranged to image light emitted from the photoluminescent material into the far-field, which optical system comprises a converging lens. | 01-30-2014 |
20140340918 | LASER AND PHOSPHOR BASED LIGHT SOURCE FOR IMPROVED SAFETY - A light source system comprising an optical system which is arranged to project light from a light source into the far-field. The light source comprises a mixture of fluorescent materials which are sensitive to one of two wavebands in either the UV or blue part of the spectrum. The combination of the light emitted from both sets of fluorescent materials combined such that the resulting colour is perceived as white. The light source is illuminated by a plurality of laser emitters comprised of both emitters ( | 11-20-2014 |
20150176810 | LIGHTING DEVICE AND METHOD FOR PROVIDING LIGHT - A lighting device includes a transparent optical cavity having an exit surface including a specularly reflective material arranged to reflect light into the cavity, the exit surface having a plurality of apertures formed therein, a base surface including a specularly reflective material arranged to reflect light into the cavity, and at least one light receiving surface arranged relative to the base surface and configured to receive light from a light source. The plurality of apertures are arranged to maximize at least one of uniformity, angular distribution, efficiency or luminous intensity of light exiting the exit surface, and a distribution of light received at the light receiving surface is altered by at least one of a combination of the exit surface and the base surface, or the light receiving surface. | 06-25-2015 |
Patent application number | Description | Published |
20110123184 | CAMERA FLASH, A CAMERA, AND A METHOD OF GENERATING A FLASH - A camera flash comprises a light guide arranged to extract light at least through one surface; and one or more light sources arranged, in use, to emit light into the lightguide. Each light source is an LED or a laser diode. The camera flash is connectable, in use, to drive circuitry, the drive circuitry being for driving the light source(s) to emit a pulse of light. The waveguide spreads out the light from the light source(s), so that a flash of light from the camera flash does not present a safety risk, while minimising loss of the light from the light source(s). The camera flash can thus provide a high overall optical output, spread over an extended area (as defined by the waveguide). The lightguide may for example be disposed around a camera module of a mobile telephone camera. | 05-26-2011 |
20110128471 | ILLUMINATION PANEL AND DISPLAY - An illumination panel is provided, for example for use as a backlight for illuminating an at least partially transmissive display ( | 06-02-2011 |
20120133624 | DISPLAY PANEL - A display panel incorporates the functionality to determine the three dimensional position of a light reflecting or emitting object ( | 05-31-2012 |
20120287669 | BACKLIGHT, AND DISPLAY HAVING A BACKLIGHT - A display backlight comprises a light guide plate ( | 11-15-2012 |
20130010492 | LAMP COMPRISING A PHOSPHOR, RADIATION SOURCE, OPTICAL SYSTEM AND HEATSINK - A lamp comprises a thin layer of phosphor ( | 01-10-2013 |
20140029281 | LIGHT SOURCE FOR AN AUTOMOTIVE HEADLIGHT WITH ADAPTIVE FUNCTION - A light source system operable in at least first and second modes to provide at least and first and second different far field illumination patterns, the system comprising: a photoluminescent material; and a light beam generator for generating, in the first mode, a first set of light beams for illuminating respective first regions of the photoluminescent material and for generating, in the second mode, a second set of light beams for illuminating respective second regions of the photoluminescent material, the first and second sets of light beams being independently controllable. In the first mode, the light beam generator generates the first set of light beams such that a first beam of the first set of light beams illuminates a first illumination region of the photoluminescent material having one side that is inclined with respect to another side of the illumination region. | 01-30-2014 |