Abstract: In a backlight assembly, a light emitting module is divided into a plurality of light generating blocks each sequentially outputting a plurality of primary colors of light having different wavelengths. The light emitting module includes first and second base substrates, and a plurality of electroluminescent units disposed between the first and second base substrates and arranged in each of the light generating blocks. The light emitting module includes a barrier arranged corresponding to a boundary between two adjacent light generating blocks between the first and second base substrates to prevent the primary colors of light from traveling an adjacent light generating block. Thus, a mixture of colored light from the light generating blocks is prevented, thereby improving color reproducibility of the display apparatus.

Abstract: An optical sheet comprising: a transparent substrate having a first surface S1 and a second surface S2; a first light diffusion layer provided on a first surface S1 side of the transparent substrate; and a second light diffusion layer provided on a second surface S2 side of the transparent substrate, wherein a haze x1 (%) of the first light diffusion layer and a haze x2 (%) of the second light diffusion layer satisfy f(x1)/(f(x1)+f(x2))?2/3 (where when x?88, a function f(x)=1.9×(ln(1?x/90))2, and when x>88, the function f(x)=22.5x?1952.5) and (f(x1)+f(x2))?12; and a surface light source device having the same.

Abstract: An apparatus for providing a photoluminescent light source is disclosed. In one embodiment, the apparatus comprises a light source that emanates light of a particular spectrum, a camera, and a selective mirror placed between the light source and camera. The selective mirror transmits light of a spectrum detected by the camera and reflects light of a spectrum generated by the light source. The light source is transparent to light incident on its face.

Abstract: A blue LED device has a transparent substrate and a reflector structure disposed on the backside of the substrate. The reflector structure includes a Distributed Bragg Reflector (DBR) structure having layers configured to reflect yellow light as well as blue light. In one example, the DBR structure includes a first portion where the thicknesses of the layers are larger, and also includes a second portion where the thicknesses of the layers are smaller. In addition to having a reflectance of more than 97.5 percent for light of a wavelength in a 440 nm-470 nm range, the overall reflector structure has a reflectance of more than 90 percent for light of a wavelength in a 500 nm-700 nm range.

Abstract: A UV stable optical element and an LED lamp using such an element are disclosed. Embodiments of the invention include an optical element made at least in part from an inherently UV stable polyester, so that consumable UV-stabilizing additives are not needed. Thus, the substrate of the optical element can maintain transparency and other desirable characteristics over longer periods of time in the face of high ultraviolet light exposure. In some embodiments, the optical element includes the inherently UV stable polyester and a phosphor for remote wavelength conversion. In some embodiments, the UV stable polyester is an aromatic polyester such as polyarylate. The optical element according to example embodiments of the invention can be used in an LED lamp.

Abstract: An LED light source lamp has built-in drive circuits in a housing, and is used by being attached to a lamp holder. An LED installation plate is arranged, in a main space of the housing, on an attachment side to the lamp holder. An LED module on a surface, of the LED installation plate, opposite to the lamp holder, is a collection of LEDs driven by the drive circuit. A light diffusion member is arranged so as to block the optical axis of light emitted by each LED of the LED module. Here, the drive circuits are arranged in an outer peripheral space, between the LED module and the light diffusion member, so as not to block the optical axis of light emitted by each LED of the LED module.

Abstract: A glass article that is ion-exchangeable and has at least one roughened surface. The roughened surface has a distinctness-of-reflected image DOI of less than 90 when measured at an incidence angle of 20°. A pixelated display system that includes such a glass article is also provided.

Abstract: Embodiments of the present invention provide light diffusion into edge lines of a modular display, and thus provide a modular display that is capable of displaying a single, continuous image without visible edge lines between individual display modules. One display module includes a multitude of pixels that contain red, green, blue, and white light sources. The replacement of an edge line blocking dam with the light diffusion edge line of the individual display module can provide a single, continuous image to be displayed thereon without visible, image-quality-reducing edge lines. With various heights of the buffer layer, the light can concentrate on the edge line in modular display. The individual display modules can be light emitting diode (LED), organic LED (OLED), UV LED, RGB LED, Phosphor-based LED, Quantum dot LED, or displays based upon a combination thereof. Furthermore, the variable height buffer layer allows for a modular display image in 2-dimensional or 3-dimensional formats.

Abstract: According to one embodiment, in a constricted part of a globe, one end is set to a minimum diameter, the other end is set to a maximum diameter, and a diameter thereof increases from the one end side to the other end side. The constricted part of the globe is concaved into the inside of an imaginary straight line connecting an outer edge of the one end and an outer edge of the other end when viewed in section. A light source part includes a semiconductor light-emitting element and is contained in the globe so that a light-emitting part is positioned between both the ends of the constricted part of the globe. A cap is positioned on one end side of the globe.

Abstract: Provided are a light-emitting device that emits light suppressed in unevenness in luminance (furthermore, unevenness in color), a lighting device that can irradiate planar light suppressed in unevenness in luminance (furthermore, unevenness in color), a display device that can display an image suppressed in unevenness in luminance (furthermore, unevenness in color), and a method for producing a light-emitting device that can easily produce the light-emitting device. A light-emitting device 10 includes a light-emitting element 12, a phosphor layer 13 containing a phosphor that is excited by the light emitted by the light-emitting element 12 to emit fluorescence, a substrate 11 with the light-emitting element 12 and the phosphor layer 13 on the surface, and a resin body 14 that seals the light-emitting element 12 and the phosphor layer 13. An additional member 15 is provided on an opposite surface 14a opposed to the light-emitting surface of the light-emitting element 12 on the surface of the resin body 14.

Abstract: Solutions to improve the properties of the phosphors and electroluminescent devices are described, using phosphors in combination with zeolites for converting UV or Blue radiation into visible radiation.

Abstract: A cone-shaped lens is integrally formed with a lateral member using a common material. The cone-shaped lens has a light-output surface having a corresponding area while the aforementioned member has an exterior same-side surface area that extends beyond the light-output surface by an amount that is at least four times the corresponding area of the cone-shaped lens's light-output surface.

Abstract: According to an exemplary embodiment, a lighting apparatus includes a light source that includes a light emitting element, and a member which is irradiated with light emitted from the light source and which is formed of resin having absorptivity of 15% or less in a wavelength in which intensity is 10% of a peak intensity, at a wavelength side that is shorter than an intensity peak of a spectrum of blue light emitted from the light source.

Abstract: The present invention aims to provide a light-diffusing heat shrinkable tube which has light diffusibility that enables LED point light sources to give an impression of a surface light source such as a conventional fluorescent lamp. The tube is also capable of suppressing scattering of broken fragments of a transparent pipe that includes the light sources, in the case of an unexpected accident including falling of the pipe. The present invention also aims to provide a linear LED light including the light-diffusing heat shrinkable tube. The light-diffusing heat shrinkable tube including a polyester resin and a light diffusing agent, the polyester resin having an inherent viscosity of 0.8 to 1.4 dl/g, the tube comprising 0.1 to 2.5 wt % of the light diffusing agent, the tube having a thickness of 60 to 300 ?m.

Abstract: A light emitting device includes an electroluminescent element (1), a housing (2) and current supply device for the electroluminescent element. A micro-optical element (12) is coupled to the housing (2) and arranged such that it influences light emitted by the electroluminescent element (1). The micro-optical element may be made up of micro-optical structures on a surface of an at least partially transparent layer (11) coupled to the housing (2). The micro-optical structures may, for example, be manufactured by directly imprinting them on the at least partially transparent layer (11) coupled to the housing or by casting an at least partially transparent layer (11) including the electroluminescent element to a body of the light emitting device. The diffractive optical features of the micro-optical element (12) are designed according to the position, size and shape of the one or more electroluminescent elements (1), and output light distribution of the one or more electroluminescent elements (1).

Abstract: A lighting device includes a light guide body and at least one light-emitting unit. The light guide body has a light guide channel and a local roughened surface on the light guide channel as a scattering region. The at least one light-emitting unit is capable of emitting a light into the light guide channel, wherein at least one portion of the light is guided to the scattering region, and the scattering region scatters the light as a local light source region.

Abstract: A luminous flux control member can stabilize an optical performance, make manufacturing easy and improve efficiency of use of light at the same time. A reflection surface (15) is formed in a surface shape, so that an extreme end section of the reflection surface (15) that is the most distant from an emission area (5) is positioned further inward in the radial direction than a base end section that is the closest to the emission area (5), and the reflection surface (15) intersects once a virtual surface that is inclined with respect to an optical axis connecting between the extreme end section and the base end section. The surface shape suppresses an offset of a light distribution of light emitted from the emission area (5) from a designed light distribution due to an offset between an optical axis and the center axis of light emitted from a light source.

Abstract: An LED light source lamp has built-in drive circuits in a housing, and is used by being attached to a lamp holder. An LED installation plate is arranged, in a main space of the housing, on an attachment side to the lamp holder. An LED module on a surface, of the LED installation plate, opposite to the lamp holder, is a collection of LEDs driven by the drive circuit. A light diffusion member is arranged so as to block the optical axis of light emitted by each LED of the LED module. Here, the drive circuits are arranged in an outer peripheral space, between the LED module and the light diffusion member, so as not to block the optical axis of light emitted by each LED of the LED module.

Abstract: A lamp is provided which is suitable for use in low-profile applications. The lamp includes a light source and a lens. The lens includes a first surface opposite a second surface, where the second surface includes an injection surface and the first surface includes a multi-faceted optical element converging towards the injection surface. The light source injects light into the lens via the injection surface and the light refracts through the first surface while total internally reflecting off the first surface and the second surface toward the periphery of the lens.

Abstract: This light emitting diode (LED) device provides a 360 degree lighting angle in the horizontal plane and a 300 degree lighting angle in the vertical plane while simultaneously addressing LED die thermal management, which is critical to high lumen output LEDs. This LED lighting device is comprised of the LED lens, the LED holder and the heat sink stem. Light produced by at least one LED die traveling vertically is diffused by the top refractive portion of the lens. Light rays directed towards the pointed elements are totally internally reflected downwards then refracted out of the lens, thus resulting in a spherical light pattern. This technology is designed as a replacement for conventional light sources, such as incandescent light bulbs, halogen bulbs, CFLs (compact fluorescent lamps) and metal halide lamps.

Abstract: A UV stable optical element and an LED lamp using such an element are disclosed. Embodiments of the invention include an optical element made at least in part from an inherently UV stable polyester, so that consumable UV-stabilizing additives are not needed. Thus, the substrate of the optical element can maintain transparency and other desirable characteristics over longer periods of time in the face of high ultraviolet light exposure. In some embodiments, the optical element includes the inherently UV stable polyester and a phosphor for remote wavelength conversion. In some embodiments, the UV stable polyester is an aromatic polyester such as polyarylate. The optical element according to example embodiments of the invention can be used in an LED lamp.

Abstract: In a plane emission device comprising a transparent substrate, a light scattering layer formed on a surface of the transparent substrate, and a luminescent body of organic or inorganic material which is formed on a surface of the light scattering layer and emits light by light or electric energy, efficiency to takeout light to outside is improved. The light scattering layer contains binder and two kinds of fillers, and when a refraction index of the binder is assumed as Nb, a refraction index of one of the two kinds of fillers is assumed as Nf1, and a refraction index of the other is assumed as Nf2, a relationship that Nf2>Nb>Nf1 is satisfied. Since the light scattering layer contains two kinds of fillers, disorder occurs in critical angle when light exits from the light scattering layer to the transparent substrate, incidence rate of light into the transparent substrate rises, and efficiency to takeout the light to outside increases.

Abstract: A light emitting apparatus has a light emitting element arranged on a substrate and a light flux controlling member. The light flux controlling member has: a light control/emission surface that controls a traveling direction of light; a concavity that allows a main beam to be incident inside; and a back surface that extends in a radial direction from an opening rim part of the concavity and that allows sub-beams to be incident inside. One of a grid convex part which arranges a plurality of strips of convex parts in a grid pattern and a grid concave part which arranges a plurality of strips of concave parts in a grid pattern is formed in the back surface of the light flux controlling member. The substrate and the back surface of the light flux controlling member are placed opposite to one another without intervention of a reflective sheet therebetween.

Abstract: The lighting device includes a first resin layer having a first refractive index and a second resin layer having a second refractive index lower than the first refractive index and higher than the refractive index of the air, which are over a light-emitting element layer, a plurality of granules provided at the interface between the first resin layer and the second resin layer and each having the second refractive index or a plurality of projections each having an apex provided inside the first resin layer and a flat surface in contact with the interface between the first resin layer and the second resin layer and having the second refractive index, an uneven structure provided at the interface with the air, and a resin substrate having the second refractive index.

Abstract: A light emitting apparatus can prevent unevenness in illuminance from being produced. This light emitting apparatus 5 has: light emitting elements 3 that emit light; and light flux controlling members 4 that control the traveling directions of light emitted from light emitting elements 3, and a plurality of grid convex parts 13 are formed in back surface 12 (i.e. lens bottom surface) of light flux controlling member 4. Grid convex parts 13 vary the incident angles of light incident on back surface 12 of light flux controlling member 4. Therefore, light incident from back surface 12 is scattered without being concentrated, and is emitted from light flux controlling member 4.

Abstract: A lamp includes a hollow main body; an electrical circuit assembly disposed in the main body; an LED illumination assembly disposed in front of the electrical circuit assembly and electrically connected thereto; a diffuser disposed in front of the illumination assembly; a frame mounted on a forward end of the main body with the diffuser fitted therein; and a hollow protective cover shaped to enclose the electrical circuit assembly.

Abstract: The present invention discloses a uniform light emitting lamp structure including a lamp holder, an electric connection portion and a planar portion disposed on both end surfaces of the lamp holder respectively, and the planar portion includes a circuit board electrically coupled to the electric connection portion. The lamp structure further includes an LED light source, a lamp cover and a light guide column with a refractive index n1. After the light of the LED light source is projected from an environmental medium with a refractive index n2 to the light guide column, a portion of the light is reflected from the critical plane in a direction corresponding to the lamp holder through reflections and refractions, such that the light of the LED light source is projected in the environmental medium to achieve the uniform light emitting effect.

Abstract: Disclosed is a light-emitting device, including an LED light source and a light diffusion element. The light diffusion element, covering at least a part of the LED light source, is composed of a first polymer, a second polymer, or a blend of them. The first polymer has a larger crystal diameter than that of the second polymer. The first polymer is made of polypropylene or ethylene-propylene copolymer. The second polymer is made of polyethylene, polypropylene, or ethylene-propylene copolymer. A blend of certain ratios of the first and second polymer gives rise of an excellent material that has improved light diffusion. This material can be widely adopted to current light fixtures for its evenly distributed lighting and great brightness.

Abstract: An apparatus for providing a photoluminescent light source is disclosed. In one embodiment, the apparatus comprises a light source that emanates light of a particular spectrum, photoluminescent material which converts light from the light source to light of another spectrum, and a selective mirror which reflects light generated by the light source and transmits light generated by the photoluminescent material. The photoluminescent material may be arranged so as to provide a plurality of light sources that emanate light of various colors. In an embodiment, the photoluminescent material is situated in small regions within a transparent material and lenses are used to collimate light emitted from the small regions.

Abstract: A portion of a bulb shell of a LED light bulb is selected to be applied with a diffusion layer thereon to increase the amount of light projecting in the lateral and backward directions of the LED light bulb and thereby expand the effective illuminating space of the LED light bulb. A bulb shell is produced by applying a refractive film or fluorescent powder to a frosted shell base, and the process is thus simple, low-cost, and compatible with the manufacturing process of ordinary bulb shells.

Abstract: A geometrically shaped photonic crystal structure consisting of alternating layers of thin films is heated to emit light. The structure may include index matching layers or a cavity layer to enhance emissions. The layer thicknesses of the structure may be spatially varied to modify the emission spectrum versus emission angle. The self-focusing structure may be fabricated into a convex electrically heated wire filament light bulb, a concave visible thermophotovoltaic emitter, a concentric directional heat exchanger, an electronic display, or a variety of irregularly shaped remotely read temperature or strain sensors.

Abstract: An article of manufacture, comprising: at least one point source of light which emits a light beam; and at least one reflective means for diffusing the light and/or converting the light to a different color range. The goal of this invention is to greatly increase the energy efficiency of area lighting by the use of highly efficient beams light sources.

Abstract: An electroluminescent element wherein an electrode 1, an electroluminescent layer 2, a high-refractive-index layer 3 (a transparent electrode layer 3A and an intermediate layer 3B) and a translucent body 4 are sequentially laminated. On light-emitting-surface side of the high-refractive-index layer 3 and the translucent body 4, layers 5A and 5B individually having a light-scattering function are provided respectively. The presence of the light-scattering layers 5A and 5B on the light-emitting-surface side of the high-refractive-index layer 3 and the translucent body 4 enables to emit light from the electroluminescent element through multiple scattering of guided light, which travels inside the translucent body 4 in the planar direction while being totally reflected by the interface between the translucent body 4 and air, and other guided light, which travels inside a thin film including the electroluminescent layer 2 and the high-refractive-index layer 3.

Abstract: A planar light source device is provided which has high light extraction efficiency and in which a change in color tone at different viewing angles is small. The planar light source device includes, on a light emitting surface, a concavo-convex structure layer made of a resin composition. In this planar light source device, the concavo-convex structure layer has a cone, pyramid, or prism shape, and the resin composition contains a transparent resin and particles. In particular, in the planar light source device, variations in any of x- and y-chromaticity coordinates in any directions in a hemisphere on the light emitting surface are within ±0.1, the diameter of the particle is 10 ?m or less, and the amount of the particles is 1 to 40 wt % based on the total amount of the resin composition. In addition, the difference in refractive index between the particles and the transparent resin is 0.05 to 0.5.

Abstract: A LED lamp including a cover with first and second transmissive regions that differently affect light emissions (e.g., with respect to diffusion, color, or other characteristics) transmitted therethrough. One or more apertures may be defined in a diffusive cover for a LED lamp to permit flow of air and escape of heat, and also to permit escape of directly emitted or reverse scattered light proximate to a base of the LED lamp. Multiple diffuser segments may be overlapped with intervening apertures.

Abstract: LED light bulbs include openings in base or cover portions, and optional forced flow elements, for convective cooling. Thermally conductive optically transmissive material may be used for cooling, optionally including fins. A LED light engine may be fabricated from a substrate via planar fabrication techiques and shaped to form a substantially rigid upright support structure. Mechanical, electrical, and thermal connections may be made between a LED light engine and a LED light bulb.

Abstract: A light-emitting device comprising a substrate, a light-emitting stack, and a transparent adhesive layer having wavelength-converting materials embedded therein formed within the light-emitting device is provided.

Abstract: An object of the present invention is to provide an illumination apparatus which includes an illumination fixture having an open-type reflector and a metal halide lamp, and can suppress a decrease in intensity and occurrence of glare. The illumination apparatus includes a metal halide lamp and an illumination fixture. The metal halide lamp includes an arc tube which has therein a pair of electrodes, an inner tube which houses the arc tube and has a pinch seal part at one end, and an outer tube which houses the inner tube and has a base at one end. The illumination fixture includes a reflector having a concave reflecting surface, a socket, and an attachment. In the inner tube, a diffusing part which diffuses light emitted from the arc tube is formed in an area closer to a lower end of the inner tube than a center between the pair of electrodes.

Abstract: A flat panel display apparatus with reduced reflection of external light incident on the flat panel display apparatus. The flat panel display apparatus includes a substrate, a porous layer disposed on the substrate, and a plurality of display devices disposed on the substrate. Here, the porous layer is adapted to diffusedly reflect external light and/or to increase viewing angle of the flat panel display apparatus.

Abstract: A lighting device includes a light guide body and at least one light-emitting unit. The light guide body has a light guide channel and a local roughened surface on the light guide channel as a scattering region. The at least one light-emitting unit is capable of emitting a light into the light guide channel, wherein at least one portion of the light is guided to the scattering region, and the scattering region scatters the light as a local light source region.

Abstract: A light emitting device package is provided that comprises first and second light emitting devices including light emitting diodes, a body a body having a first cavity in which the first light emitting device is positioned and a second cavity in which the second light emitting device is positioned and a resin material formed in the cavity, wherein the resin material includes, a first resin material formed in the first cavity, a second resin material formed in the second cavity, and a third resin material formed an upper surface of the first and second resin materials, wherein at least one of the first resin material and the second resin material includes a light diffusing material.

Abstract: A lighting device comprising a light source and a diffuser spaced from the light source. The lighting device further comprises a wavelength conversion material disposed between the light source and the diffuser and spaced from the light source and the diffuser, wherein the diffuser is shaped such that there are different distances between the diffuser and said conversion material at different emission angles. In other embodiments the diffuser includes areas with different diffusing characteristics. Some lamps are arranged to meet A19 and Energy Star lighting standards.

Abstract: Apparatus and associated methods involve an assembly of multiple LED light engines in which a desired number of LED lamps are mounted to a plate that forms a wall of an enclosure. In an illustrative example, three LED light engines may be mounted to a plate that may be slidably installed as a wall of an extruded housing that contains electrical connections from an AC power inlet to each light engine. In various examples, the number and layout arrangement of the LED light engines may be custom selected for a particular application.

Abstract: A front filter for a plasma display that is mainly used as a TV display. The front filter has an anti-glare function which is capable of effectively preventing reflection concurrently with achieving black color reproduction, and a functional layer for imparting a function required of an image display device such as a light absorbing function and/or an adhesion function. This front filter has an anti-glare layer having a concavo-convex shape on an outermost surface thereof, a polyester film and a functional layer. The anti-glare layer is disposed on the observer-side surface of the front filter; at least one functional layer is disposed on the display device side.

Abstract: An electric lamp comprises a bulb-shaped outer envelope made of a glass material with a substantially spherical portion for receiving at least a part of at least one light source and an elongated end portion for receiving at least a part of an electronic control gear for energizing the light sources. A base portion attached to the bulb-shaped envelope comprises connecting means for connecting the electronic control gear to an associated power supply. The base portion is provided with a base plate for closing the base portion and the connecting means are pin connectors embedded in the base plate of the base portion. A method of manufacturing a lamp with pin connectors is also disclosed. In this method, an outer envelope made of a glass material is connected to a base portion that has a base plate with embedded pin connectors. A lamp that comprises a bulb-shaped outer envelope made of a plastic material and has a base portion with pin connectors is also provided.

Abstract: The invention is a distributed element LED light bulb 11 comprising an envelope 13 having an inside surface 15 and an outside surface 17. The light bulb 11 includes at least one mount 19 having a first conductive member 21 and a second conductive member 23. The mount 19 is for securing the envelope 13 in a fixture or a socket and for providing electrical current from the socket or fixture to the LED light bulb. A plurality of LEDs 25 are mounted on the inside surface 15 of the envelope 13 and disposed to emit light inwardly. One or more electrical elements 27 provide current to/from the plurality of LEDs 25.

Abstract: A light emitting device having excellent thermal resistance and light resistance is provided. The light emitting device is manufactured by disposing a substrate electrode having a predetermined conductive pattern provided thereon to a substrate of a ceramic; flip-chip mounting a light emitting element having an n-side electrode and a p-side electrode on a common surface side onto the substrate electrode in a face-down manner and electrically connecting thereto; heating a glass to a temperature from the glass transition temperature to below the melting point of the glass, until the glass shows its softened state; and fixing the softened glass to the substrate by way of pressing to cover the light emitting element with the glass.

Abstract: A plasma lighting system comprises a resonator, a bulb received in the resonator and containing a discharge material therein for emitting light in accordance with the discharge material is exited as a plasma state, and a dielectric mirror disposed at one side of the bulb and formed of a spontaneous reflective material for spontaneously reflecting light generated from the bulb. The dielectric mirror can be included or excluded, and can smoothly reflect light without an additional reflection coating layer. The dielectric mirror is prevented from being damaged even in a high temperature, and thus a lowering of an optical efficiency is prevented when used for a long time.

Abstract: A composite thin film-holding substrate for a surface light emitter, which is a transparent substrate including a composite thin film containing fine particles and a binder formed on the surface of a transparent base material. The refractive index of the composite thin film is higher than the refractive index of the transparent base material. The difference in the refractive index between the fine particles and the binder contained in the composite thin film is at least 0.1, and the ratio of (solid content mass of the fine particles)/(solid content mass of the binder+solid content mass of the fine particles) of the composite thin film is from 0.01 to 0.5. A surface light emitter can use the substrate.

Abstract: A light-emitting diode (LED) device includes a reflective electrode and a transparent electrode having one or more light-emitting layers formed there-between. A contrast-enhancement element is located on a side of the transparent electrode opposite the light-emitting layer. The contrast-enhancement element has a first reflected-light absorbing layer and a second layer including transparent areas and reflective areas. The second layer is between the first reflected-light absorbing layer and the reflective electrode. A patterned light-scattering layer is located between the reflective areas of the second layer and the reflective electrode.