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 |