Patent application number | Description | Published |
20080239753 | TRANSREFLECTORS, TRANSREFLECTOR SYSTEMS AND DISPLAYS AND METHODS OF MAKING TRANSREFLECTORS - The transreflectors may comprise a transparent substrate having reflective surfaces and other light transmissive surfaces for respectively reflecting and transmitting a greater portion of the light striking opposite sides of the substrate. Alternatively, the transreflectors may comprise two or more transparent substrates of different indices of refraction bonded together, with a pattern of optical deformities in the mating side of one of the substrates and an inverse pattern of optical deformities in the mating side of an other substrate in mating engagement with each other. The transreflectors are used in a transreflector system or display to transmit more of the light emitted by a backlight or other light source incident on one side of the transreflectors and reflect more of the light incident on the opposite side of the transreflectors. The transreflectors and backlight may be tuned to each other to enable the transreflectors to better transmit more of the light emitted by the backlight. | 10-02-2008 |
20080239755 | LIGHT REDIRECTING FILMS AND FILM SYSTEMS - Light redirecting films and film systems include a thin optically transparent substrate having a pattern of individual optical elements of well defined shape on or in the substrate. At least some of the optical elements may vary at different locations on the substrate to redistribute or redirect light passing through the substrate. | 10-02-2008 |
20080259640 | LIGHT EMITTING PANEL ASSEMBLIES - Edge lit light emitting assembly includes a panel member having a light input surface at one end of a greater width than thickness and an array of LEDs positioned in close proximity to the light input surface that emit light out of the side of the LEDs closest to the light input surface. At least one reflector around one or more of the LEDs collects light emitted by the LEDs and is shaped to reflect and focus the light at an acceptable angle for entering the light input surface, the focused light being shaped to have a greater cross-sectional width than height corresponding to the width and thickness of the light input surface. | 10-23-2008 |
20080259642 | LIGHT EMITTING PANEL ASSEMBLIES - A light emitting panel, film or substrate assembly includes an optically conductive panel, film or substrate having at least one light input surface defined by at least one edge of a slot, cavity, opening or hole in which at least one LED light source having a greater width than height is positioned adjacent to the light input surface for directing light into the panel, film or substrate. The LED light source is configured to generate light having an output distribution defined by a greater width component than height component, the height component substantially corresponding to or less than the thickness of the light input surface. | 10-23-2008 |
20080266899 | LIGHT EMITTING PANEL ASSEMBLIES - Light emitting panel assembly includes an optically conductive panel member having at least one input surface and a greater cross-sectional width than thickness, and at least one light transition emitter having a light emitting surface in close proximity to the light input surface. The light emitting surface has an output distribution defined by a greater width component than height component, a thickness equal to or less than the thickness of the panel member and a greater width than thickness in the width direction of the panel member. A reflector extends around the light source and is shaped to reflect and focus the light emitted from the light source at an acceptable angle for entering the light source. | 10-30-2008 |
20080304283 | TRANSREFLECTORS, TRANSREFLECTOR SYSTEMS AND DISPLAYS AND METHODS OF MAKING TRANSREFLECTORS - The transreflectors may comprise a transparent substrate having reflective surfaces and other light transmissive surfaces for respectively reflecting and transmitting a greater portion of the light striking opposite sides of the substrate. Alternatively, the transreflectors may comprise two or more transparent substrates of different indices of refraction bonded together, with a pattern of optical deformities in the mating side of one of the substrates and an inverse pattern of optical deformities in the mating side of an other substrate in mating engagement with each other. The transreflectors are used in a transreflector system or display to transmit more of the light emitted by a backlight or other light source incident on one side of the transreflectors and reflect more of the light incident on the opposite side of the transreflectors. The transreflectors and backlight may be tuned to each other to enable the transreflectors to better transmit more of the light emitted by the backlight. | 12-11-2008 |
20090027918 | TRANSREFLECTORS, TRANSREFLECTOR SYSTEMS AND DISPLAYS AND METHODS OF MAKING TRANSREFLECTORS - Light emitting assembly includes at least one film, sheet, plate or substrate positioned between a light source and a display for redirecting at least some of the light emitted by the light source. One side of the film, sheet, plate or substrate may have a pattern of reflective or refractive surfaces or deformities and the other side may have corresponding or aligned optical deformities of well defined shape. Light emitted from the light source that strikes a reflective or refractive surface or deformity on the one side of the film, sheet, plate or substrate passes through the film, sheet, plate or substrate and is redirected by at least one corresponding optical deformity on the other side of the film, sheet, plate or substrate. | 01-29-2009 |
20090027920 | LIGHT EMITTING PANEL ASSEMBLIES - Backlight assembly includes a waveguide having a greater width than height and at least one light emitting area for illuminating a display. A light source assembly optically coupled to the panel includes a light emitting source and at least a reflective or refractive surface to disperse light emitted from the light emitting source more along the width than height of the panel. | 01-29-2009 |
20090034234 | LIGHT EMITTING PANEL ASSEMBLIES - Backlight assembly includes a waveguide having a light emitting area to illuminate a display panel and different sets of deformities on different surfaces of the waveguide to cause light to be emitted from the light emitting area. A transition area is optically coupled to multiple colored LEDs and to the waveguide to mix light from the LEDs before the light reaches the light emitting area. | 02-05-2009 |
20090034293 | LIGHT REDIRECTING FILMS AND FILM SYSTEMS - Light emitting assembly includes a generally planar optical conductor having at least one output region for emitting light and at least one light source positioned adjacent at least one light input edge located on a side or at or near a corner of the optical conductor for directing light into the optical conductor. The light source has a total length that is quite small in relation to the length and width of the optical conductor and is configured to generate light having an output distribution defined by a greater width component than height component. | 02-05-2009 |
20090073719 | LIGHT EMITTING PANEL ASSEMBLIES - Light emitting assemblies include an optical conductor having at least one slot, cavity or hole in at least one side that defines at least one input surface for a light source having a light output distribution defined by a greater width component than height component. The optical conductor has a predetermined pattern of deformities that vary to cause a desired light output distribution to be emitted from a plurality of specific surface areas of the optical conductor. | 03-19-2009 |
20090135626 | LIGHT REDIRECTING FILMS AND FILM SYSTEMS - Optical assembly includes a generally planar light output surface located on a first major plane, and a generally planar second surface located on a second major plane approximately parallel to the first major plane and superimposed thereon. Both the light output surface and the second surface have respective first and second patterns of well defined optical elements that are quite small in relation to the length and width of the optical assembly. The optical elements of the first pattern have an apex angle formed by a first sloped surface that is larger in an area closer to at least one light input edge of the optical assembly and smaller in another area further away from the light input edge. | 05-28-2009 |
20090141517 | LIGHT REDIRECTING FILMS AND FILM SYSTEMS - Optical assembly includes a reflector layer, a generally planar first surface located on a first major plane, and a generally planar second surface located on a second major plane approximately parallel to the first major plane and superimposed thereon. The first and second surfaces have first and second patterns of well defined optical elements that are quite small in relation to the length and width of the optical assembly. At least some of the optical elements of the first pattern include a first sloped surface for reflecting at least some light (that is emitted from at least one light source that is quite small relative to the length and width of the optical assembly) towards at least some of the optical elements of the second pattern and for transmitting or refracting at least some light towards the reflector. At least some of the optical elements of the second pattern include a second sloped surface for transmitting or refracting at least some light and for reflecting at least some light towards at least some of the optical elements of the first pattern, wherein more light (that is emitted from the at least one light source) is transmitted or refracted by the second surface than by the first surface. | 06-04-2009 |
20090161385 | TRANSREFLECTORS, TRANSREFLECTOR SYSTEMS AND DISPLAYS AND METHODS OF MAKING TRANSREFLECTORS - Optical assembly includes a hollow backlight having at least one light input edge and at least one light source positioned adjacent to the at least one light input edge. A back reflector is positioned at or in close proximity to a first side of the hollow backlight for reflecting the light through the hollow backlight and out through a second side of the hollow backlight superimposed on the first side, and a reflective polarizer is positioned at or in close proximity to the second side of the backlight. | 06-25-2009 |
20090207632 | LIGHT EMITTING PANEL ASSEMBLIES - Optical assembly includes a light emitting panel member having at least one light input area for receiving light from two or more different colored light sources. A pattern of individual optical deformities on or in at least one surface area of the panel member contains at least two different configurations of optical deformities to promote color mixing within the panel member and cause light of a preferred color to be emitted therefrom. | 08-20-2009 |
20090250829 | METHODS OF CUTTING OR FORMING CAVITIES IN A SUBSTRATE FOR USE IN MAKING OPTICAL FILMS, COMPONENTS OR WAVE GUIDES - A method of forming a varying pattern of optical elements on or in at least one side of an optical panel member involves cutting or forming a pattern or patterns of cavities in a cylindrical or curved substrate or in a sleeve or sleeve segment of the substrate that corresponds to a desired pattern and shape of optical elements to be formed on or in the optical member. The substrate or sleeve or sleeve segment containing the desired pattern or patterns of optical element shaped cavities or depositions or mirror copies or inverse copies thereof is used in production tooling or as a master for production tooling to form the corresponding pattern of optical elements on or in at least the one side of the optical panel member. | 10-08-2009 |
20090257244 | LIGHT EMITTING PANEL ASSEMBLIES - Light emitting panel assembly includes a panel member, at least one light source and a light transition member located between the light source and the light input surface of the panel member. On or in the light transition member are elements that effect a desired colored or white light output distribution from a light output area of the panel member. The light transition member may comprise a coating or surface treatment on the light input surface that effects the color of light emitted by the light output area. Alternatively a transparent sheet, plate or film attached to or positioned against the light input surface may have a coating, surface treatment or deformities that effect the color of light passing through the sheet, plate or film to obtain a desired colored or white light output distribution from the light output area. | 10-15-2009 |
20090290218 | TRANSREFLECTORS, TRANSREFLECTOR SYSTEMS AND DISPLAYS AND METHODS OF MAKING TRANSREFLECTORS - Optical member includes at least two layers of different indices of refraction. At least one of the layers has optical deformities at an interface between at least the two layers. | 11-26-2009 |
20100026703 | OPTICALLY TRANSMISSIVE SUBSTRATES AND LIGHT EMITTING ASSEMBLIES AND METHODS OF MAKING SAME, AND METHODS OF DISPLAYING IMAGES USING THE OPTICALLY TRANSMISSIVE SUBSTRATES AND LIGHT EMITTING ASSEMBLIES - Images are displayed in response to a video signal using a light emitting assembly having one or more optically transmissive substrates, films or sheets, each having at least one pattern of optical elements on or in the substrates, films or sheets. A plurality of light sources are configured to illuminate one or more output areas of one or more of the substrates, films or sheets. The light emitting assembly is configured to emit light through the pattern of optical elements and produce a predetermined luminance profile of the light emitting assembly. At least one of the light sources is dimmed or boosted in response to an input video signal while operating a liquid crystal display as a light valve to illuminate the liquid crystal display by the light emitting assembly. At least some adjacent substrates, films or sheets may have portions that overlap, and at least one pattern of optical elements on or in at least one side of the substrates, films or sheets may be configured so that discontinuities between the adjacent substrates, films or sheets are minimized. A predetermined light output from the light emitting assembly may be produced by varying the electrical input to at least some of the light sources. | 02-04-2010 |
20100172151 | LIGHT EMITTING PANEL ASSEMBLIES - Light emitting assembly includes an optical conductor having a pattern of deformities on or in front and back sides of the optical conductor to cause light to be emitted from a light emitting surface on at least one of the sides. At least one of the deformities varies, and at least one planar or curved refractive surface is aligned with at least one light source to redirect a portion of the light from the light source entering the optical conductor in a predetermined manner to cause the light emitted from the light emitting surface to pass through an optical film, which redirects the light through a liquid crystal display with low loss. | 07-08-2010 |
20100188858 | LIGHT REDIRECTING FILMS AND FILM SYSTEMS - Light redirecting film comprises a thin optically transparent substrate having a pattern of individual optical elements of well defined shape on or in at least one surface that are quite small relative to the length and width of the surface. At least some of the optical elements have at least one flat surface and at least one curved surface and may intersect each other to a greater extent on the curved surface than on the flat surface to increase the relative percentage of flat surface area to curved surface area of the intersecting optical elements. | 07-29-2010 |
20100309409 | LIGHT EMITTING ASSEMBLIES HAVING DEFINED REGIONS OF DIFFERENT BRIGHTNESS - A light emitting assembly has a LED light source illuminated optical conductor having a pattern of well defined light extracting optical elements configured to redirect light from an LED light source out from the optical conductor. The optical elements are additionally configured to define elongate higher brightness regions on the major surface of the optical conductor, and a lower brightness region outside of the higher brightness regions. | 12-09-2010 |
20100309685 | LIGHT EMITTING PANEL ASSEMBLIES - Optical assembly comprises a light emitting panel member having opposite sides and an input edge for receiving light from light sources optically coupled to a different location along the input edge. On or in at least one of the sides of the panel member is a pattern of individual optical deformities that are varied throughout the pattern and shaped or oriented throughout the pattern to extract light propagating through the panel member in different directions for viewing from different angles through one of the sides of the panel member. | 12-09-2010 |
20110051458 | LIGHT EMITTING PANEL ASSEMBLIES - Light emitting panel assembly comprises a light emitting panel member and a light source. At least one surface of the panel member has a pattern of light extracting deformities formed by applying the deformities to the panel member and afterward permanently attaching the deformities to the panel member to become part of the assembly. | 03-03-2011 |
20110058390 | LIGHT REDIRECTING FILMS AND FILM SYSTEMS - Optical assembly comprises a light emitting panel having at least one light source positioned adjacent to at least one light input edge located at or near a corner of the panel and at least one light output surface for emitting light. In close proximity to the light output surface is a light redirecting film for receiving light emitted from the light output surface. The film has optical grooves extending across the film in a curved pattern facing a corner of the film in close proximity to the corner of the panel to redistribute the light emitted from the light output surface. | 03-10-2011 |
20110063873 | TRANSREFLECTORS, TRANSREFLECTOR SYSTEMS AND DISPLAYS AND METHODS OF MAKING TRANSREFLECTORS - Optical assembly comprises a light emitting assembly comprising a light emitting panel and an LED light source, and a transreflector film or sheet attached to the light emitting panel. The light emitting panel has a first pattern of optical deformities, and the transreflector sheet or film has a second pattern of optical deformities. The optical deformities of the second pattern are smaller in length and width than the transreflector film or sheet, and the optical deformities of the first pattern are aligned with the optical deformities of the second pattern. | 03-17-2011 |
20110134362 | LIGHT REDIRECTING FILMS AND FILM SYSTEMS - An optical assembly comprises a light emitting panel having a light output surface and a light redirecting film located to receive light emitted from the light output surface. The light output surface has a non-uniform directional light output distribution. The light redirecting film has a pattern of individual optical elements of well defined shape that vary at different locations on the light redirecting film to redistribute the light received from the light output surface within a desired light ray angle distribution. | 06-09-2011 |
20110222310 | LIGHT EMITTING PANEL ASSEMBLIES - Light emitting assembly comprises a light transition member and a light source mounted or positioned within the light transition member. A transparent light emitting panel member conducts light received from the light source. On or in one or more surfaces of the panel member is a pattern of light extracting deformities. A cavity or recess in the panel member is shaped to receive the light transition member to facilitate placement of the light source in a modular manner. | 09-15-2011 |
20110309735 | LIGHT BULB USING SOLID-STATE LIGHT SOURCES - A light bulb has a light guide configured as a hollow body surrounding an internal volume. The light guide is open at its proximal and distal ends, and has inner and outer surfaces and an end surface at the proximal end that provides a light input edge. A solid-state light source is optically coupled to the light input edge of the light guide such that light from the solid-state light source travels in the light guide by total internal reflection. The solid-state light source is thermally coupled to a housing at the proximal end of the light guide. The housing contains vents for air flow and convection cooling through the internal volume. Light-extracting optical elements at least one of the inner surface and the outer surface of the light guide are for extracting light from the light guide. | 12-22-2011 |
20120069266 | LIGHT EMITTING ASSEMBLIES HAVING OPTICAL CONDUCTORS WITH A TAPERED CROSS SECTIONAL SHAPE - A light emitting assembly ( | 03-22-2012 |
20120075555 | LIQUID CRYSTAL DISPLAY APPARATUS AND LIGHT EMITTING ASSEMBLY WITH LIGHT TRANSMISSION CONTROL ELEMENTS FOR ILLUMINATING SAME - A liquid crystal display apparatus ( | 03-29-2012 |
20120075887 | LIGHT REDIRECTING FILMS AND FILM SYSTEMS - A light emitting assembly comprises a light source and a light emitting panel member having a panel surface and an input edge for receiving light from the light source. On or in the panel surface is a pattern of individual light extracting deformities. Each of the deformities has a well defined shape and a length and width substantially smaller than the length and width of the panel surface. At least some of the deformities have only two surfaces, each having opposite peripheral edge portions that intersect each other and intersect the panel surface. One of the surfaces of the deformities is substantially perpendicular to the panel surface and is curved in a transverse direction. The other surface of the deformities is a sloping surface. | 03-29-2012 |
20120081919 | LIGHT EMITTING PANEL ASSEMBLIES - A light emitting assembly comprises a plurality of light sources and a solid light emitting panel member having a light input edge and a transition area between the light sources and the light input edge. Light from the light sources enters the transition area and mixes within the transition area prior to entering the panel member. Refractive surfaces on the transition area redirect the light into the panel member. A film is maintained in spaced relation from the panel member by spacers at a perimeter of the film to form a hollow layer between the panel member and the film. Deformities on or in the panel member cause light to be extracted from the panel member and pass through the hollow layer and out through the film. | 04-05-2012 |
20120081921 | LIGHT EMITTING PANEL ASSEMBLIES - A light emitting assembly comprises a light source, a light emitting panel member having an input edge that receives light from the light source, and end edge and side edge reflectors. The panel member is received in a cavity or recess of a tray or housing. An additional component overlies the panel member. | 04-05-2012 |
20120081924 | LIGHT EMITTING PANEL ASSEMBLIES - An optical assembly comprises light sources and a light emitting panel member having an input edge to which each of the light sources is optically coupled at a different location along the input edge. Different sets of individual optical deformities on or in at least one of the sides of the panel member each have at least one surface that is shaped or oriented to extract light propagating in the same direction through the panel member in different directions for viewing from different angles through one of the sides of the panel member. | 04-05-2012 |
20120236530 | LIGHTING ASSEMBLY WITH ADJUSTABLE LIGHT OUTPUT - A lighting assembly includes a light guide to propagate light by total internal reflection and having a light output region on a major surface thereof. The lighting assembly also includes an optical adjuster having a major surface juxtaposed with and conforming to the light guide's major surface. The optical adjuster has a first region and a second region, the first region having a light modifying characteristic. The optical adjuster and light output region are variably positionable relative to one another to selectively apportion light emitted from the light output region between the first region and the second region. In this way, light apportioned to the first region is modified by the light modifying characteristic so that light output from the lighting assembly is modified based on relative positioning of the optical adjuster and the light guide. | 09-20-2012 |
20120236534 | ADJUSTABLE LIGHT SOURCE - A light source includes a light emitting device that emits light, and a spectrum adjuster that is positionable relative a light path of the light emitted by the light emitting device. The spectrum adjuster includes a region of continuously-variable spectrum adjusting material, usable for adjusting the spectrum of light passing through the spectrum adjuster. The variable spectrum adjusting material may be color-attenuating material, such as a filtering material, or may be wavelength-shifting material, such as a phosphor. The light source has adjustable spectrum of its output light depending upon the relative positioning of the light emitting device and the spectrum adjuster. | 09-20-2012 |
20120236535 | LIGHT BULB WITH ADJUSTABLE LIGHT SOURCE - A light bulb includes a base for mechanically mounting the light bulb and for receiving electrical power, a light guide, and a light source that directs output light into the light guide. The light source includes a light emitting device that emits light, and a variable spectrum adjuster that is variably positionable relative the light path of light emitted by the light emitting device. The spectrum adjuster includes a region of continuously-variable spectrum-adjusting material, usable for adjusting the spectrum of light passing through the spectrum adjuster. In some embodiments, the spectrum adjusting material is a color-attenuating material, such as a filtering material. In other embodiments, the spectrum-adjusting material is a wavelength-shifting material, such as a phosphor, or another suitable type of material that shifts the wavelength of light incident. | 09-20-2012 |
20120236590 | LIGHTING ASSEMBLY WITH ADJUSTABLE LIGHT OUTPUT - A lighting assembly includes a light guide having opposed major surfaces between which light propagates by total internal reflection, a light input edge, and two light output regions of different optical characteristics and at least one of which is associated with a corresponding one of the major surfaces. The lighting assembly also includes a light source located adjacent the light input edge. The light source and the light guide variably positionable relative to one another to vary a location on the light input edge at which the light is input to the light guide such that the light is emitted from the light guide selectively apportioned between the light output regions so that a characteristic of the light output from the lighting assembly is modified based on the optical characteristics associated with the light output regions and the relative positioning of the light source and the light guide. | 09-20-2012 |
20120236591 | LIGHTING ASSEMBLY WITH ADJUSTABLE LIGHT OUTPUT - A lighting assembly includes a light guide and light source. The light guide includes light input regions, at least one of the light input regions associated with an optical modifying characteristic, and the light guide is configured to propagate light by total internal reflection. The light source is located adjacent the light input regions. The light source and light input regions are variably positionable relative to one another to vary a location at which light is incident on the light input regions such that light emitted from the light source is selectively apportioned between the light input regions. A characteristic of the light output from the lighting assembly is modified based on the optical modifying characteristic of the at least one of the light input regions and the relative positioning of the light source and the light input regions. | 09-20-2012 |
20120236594 | LIGHT BULB WITH ADJUSTABLE LIGHT OUTPUT - A light bulb includes a base, a light source and a light guide having opposed major surfaces and a light input edge that receives light from the light source, the light propagating along the light guide by total internal reflection and the light guide including a light output region on one of the major surfaces. An optical adjuster has a first region having a light modifying characteristic and a second region. The optical adjuster and light output region are variably positionable relative to one another to selectively apportion light emitted from the light output region between the first region and the second region, the light apportioned to the first region being modified by the light modifying characteristic thereof so that light output from the light bulb is modified based on relative positioning of the optical adjuster and the light guide. | 09-20-2012 |
20120236595 | LIGHT BULB WITH ADJUSTABLE LIGHT OUTPUT - A light bulb includes a base; a light guide having opposed major surfaces between which light propagates by total internal reflection, a light input edge, and two light output regions of different optical characteristics at least one of which is associated with a corresponding one of the major surfaces; and a light source electrically coupled to the base and located adjacent the light input edge. The light source and the light guide are variably positionable relative to one another to vary a location on the light input edge at which light is input to the light guide such that light is emitted from the light guide selectively apportioned between the light output regions so that a characteristic of the light output from the light bulb is modified based on the optical characteristics associated with the light output regions and the relative positioning of the light source and the light guide. | 09-20-2012 |
20120236596 | LIGHT BULB WITH ADJUSTABLE LIGHT OUTPUT - A light bulb includes a base, light guide, and light source. The base is configured to mechanically mount the light bulb and receive electrical power. The light guide includes light input regions, at least one of the light input regions associated with an optical modifying characteristic, the light guide configured to propagate light by total internal reflection. The light source is located adjacent the light input regions. The light source and light input regions are variably positionable relative to one another to vary location at which light is incident on the light input regions such that light emitted from the light source is selectively apportioned between the light input regions. A characteristic of the light output from the light bulb is modified based on the optical modifying characteristic of the at least one of the light input regions and the relative positioning of the light source and light input regions. | 09-20-2012 |
20120268966 | LIGHTING ASSEMBLY - A lighting assembly includes a light guide having a first major surface, a second major surface opposite the first major surface, a light input edge, and an end edge distal the light input edge. Light input to the light guide through the light input edge propagates by total internal reflection toward the end edge. The lighting assembly further includes light extracting elements at least one of the major surfaces of the light guide, the light extracting elements configured to extract light through the first major surface in a direction away from the light input edge and away from the first major surface, and a banding reduction element at the end edge configured to redirect light incident thereon in a direction away from the light input edge. | 10-25-2012 |
20120281432 | LIGHTING ASSEMBLY - A lighting assembly includes a light guide having opposed major surfaces between which light propagates by total internal reflection and a light input edge. The light assembly also includes a light engine. The light engine has a heat conductive armature having a receptacle for a portion of the light guide that includes the light input edge and a light source retained by and thermally coupled to the armature. The armature functions as a heat sink for dissipating heat generated by the light source. The light guide is mechanically retained in the receptacle, and the light guide and the armature cooperate to align the light input edge with the light source for inputting light from the light source into the light guide through the light input edge. | 11-08-2012 |
20120287671 | LIGHTING ASSEMBLY - A lighting assembly includes a light engine and a light guide. The light engine edge lights the light guide and includes a control assembly that controls light output according to one or more parameters to produce light output from the lighting assembly with a desired characteristic. Lighting assemblies are combined to form a modular lighting assembly. | 11-15-2012 |
20120314449 | LIGHTING ASSEMBLY - A lighting assembly includes a transparent light guide having first and second major surfaces and a light input edge, and is configured to propagate light by total internal reflection. A light source located adjacent the light input edge is selectively operable to edge light the light guide. First light extracting elements at the first major surface are configured to extract light through the first major surface with a first light ray angle distribution. Second light extracting elements at the first major surface are configured to extract light through the second major surface with a second light ray angle distribution. The light extracted through the second major surface reduces visibility at viewing angles within a defined viewing angle range through the lighting assembly from the second major surface of the light guide greater than the reduction in visibility through the lighting assembly from the first major surface of the light guide. | 12-13-2012 |
20130033900 | LIGHTING ASSEMBLY WITH CONFIGURABLE ILLUMINATION PROFILE - A lighting assembly includes an edge-lit light guide and a light redirecting member. Light extracting elements at the light guide extract light from the light guide as intermediate light. Light redirecting elements at the light redirecting film are configured to redirect the intermediate light received from the light guide to illuminate a target surface in accordance with a defined illumination profile. | 02-07-2013 |
20130038195 | LIGHT BULB WITH THERMAL FEATURES - A light bulb includes a light guide, light source, and housing. The light guide is configured as an open-ended hollow body surrounding an internal volume and defining a longitudinal axis. The light guide has inner and outer major surfaces. The light source is configured to edge light the light guide. The housing is at one end of the light guide. In one embodiment, fins extend from the housing adjacent the outer major surface, each fin separated from the outer major surface by an air gap to allow air flow between the fin and outer major surface. In another embodiment, a heat sink is disposed in the internal volume and configured as a hollow body with a branched cross section. Each branch extends outward from a common center and defines an air flow channel that terminates in an orifice aligned with a respective through-slot of the light guide. | 02-14-2013 |
20130107543 | LIGHT REDIRECTING FILMS AND FILM SYSTEMS | 05-02-2013 |
20130215122 | DISPLAY APPARATUS WITH LIGHT GUIDE BASED SOLAR CONCENTRATOR - A display apparatus includes a display, a primary light concentrator, a concentrator light guide, and a solar cell. The primary light concentrator is arranged in tandem with the display, and the primary light concentrator is configured to concentrate incident light into an array of output regions. The concentrator light guide receives light from the primary light concentrator. The concentrator light guide includes light redirecting elements aligned with the output regions of the primary light concentrator to redirect light from the primary light concentrator along the concentrator light guide toward an edge thereof. The solar cell is located adjacent the edge of the concentrator light guide. | 08-22-2013 |
20130314944 | LIGHT EMITTING PANEL ASSEMBLIES - An optical assembly comprises light sources and a light emitting panel member having an input edge to which each of the light sources is optically coupled at a different location along the input edge. Different sets of individual optical deformities on or in at least one of the sides of the panel member each have at least one surface that is shaped or oriented to extract light propagating in the same direction through the panel member in different directions for viewing from different angles through one of the sides of the panel member. | 11-28-2013 |
20130322076 | LIGHT BULB WITH PLANAR LIGHT GUIDES - A light bulb includes light guides extending in a direction having a radial component with respect to a longitudinal axis, each light guide including a light input edge, opposed major surfaces, and light extracting elements at least one of the opposed major surfaces. In one embodiment, the light guides are disposed about an axial heat sink, and for each light guide, a respective light source is mounted to the axial heat sink to edge light the light guide such that light from the light source propagates in the light guide by total internal reflection. In another embodiment, a housing is at an end of the light guides, and for each light guide, a respective light source is mounted to the housing to edge light the light guide such that light from the light source propagates in the light guide by total internal reflection. | 12-05-2013 |
20130322115 | EDGE LIT LIGHTING ASSEMBLY WITH SPECTRUM ADJUSTER - A lighting assembly comprises a light source and a light guide having a light input edge and a light output surface. Light from the light source enters the light input edge and is propagated within the light guide by total internal reflection. A spectrum adjuster is adjustable or selected to achieve a desired spectrum of the light within the light guide. | 12-05-2013 |
20130322120 | OPTICALLY TRANSMISSIVE SUBSTRATES AND LIGHT EMITTING ASSEMBLIES AND METHODS OF MAKING SAME, AND METHODS OF DISPLAYING IMAGES USING THE OPTICALLY TRANSMISSIVE SUBSTRATES AND LIGHT EMITTING ASSEMBLIES - Images are displayed in response to a video signal using a light emitting assembly having one or more optically transmissive substrates, films or sheets, each having at least one pattern of optical elements on or in the substrates, films or sheets. A plurality of light sources are configured to illuminate one or more output areas of one or more of the substrates, films or sheets. The light emitting assembly is configured to emit light through the pattern of optical elements and produce a predetermined luminance profile of the light emitting assembly. At least some adjacent substrates, films or sheets may have portions that overlap, and at least one pattern of optical elements on or in at least one side of the substrates, films or sheets may be configured so that discontinuities between the adjacent substrates, films or sheets are minimized. | 12-05-2013 |
20130329432 | LIGHT REDIRECTING FILMS AND FILM SYSTEMS - An optical assembly comprises a light emitting panel having a light output surface and a light redirecting film located to receive light emitted from the light output surface. The light output surface has a non-uniform directional light output distribution. The light redirecting film has a pattern of individual optical elements of well defined shape that vary at different locations on the light redirecting film to redistribute the light received from the light output surface within a desired light ray angle distribution. | 12-12-2013 |
20140092590 | LED FLASHLIGHT - A flashlight includes first and second solid-state light sources, a collimating optical element, and a light guide. Light output by the first light source interacts with the collimating optical element to output a light from the flashlight along an optical axis of the collimating optical element. The light guide includes an outer major surface, a first end, a second end, a longitudinal axis extending between the first end and the second end, and a light input edge at the first end. Light from the second light source is input to the light guide at the light input edge and propagates in the light guide by total internal reflection. The light guide additionally includes light extracting elements to extract light from the light guide with a radial component relative to the longitudinal axis and the optical axis. | 04-03-2014 |
20140286052 | MODULAR LIGHT-EMITTING PANEL ASSEMBLY - A modular light-emitting panel assembly has first and second light guides edge lit by respective light sources. Each light guide has a light input edge, opposed side edges, opposed major surfaces and a pattern of light extracting elements at at least one of the major surfaces. The light guides are juxtaposed with a side edge of the first light guide abutting a side edge of the second light guide at a seam and with the major surfaces nominally coplanar. Various embodiments of the panel assembly additionally include respective structures that reduce visibility of the seam when the light sources illuminate the panel assembly. | 09-25-2014 |