Abstract: Disclosed are a lighting device and a method of manufacturing the same, the lighting device includes a diffusion layer diffusing and emitting light incident from a light source; a bead layer adjacently formed to a light emitting surface of the diffusion layer, including a plurality of beads, and having a separation part formed in a region in which the plurality of beads are not present; and a condensing layer formed on the bead layer and condensing light transmitting the separation part to a predetermined portion. The exemplary embodiment of the present invention can form the separation part on the diffusion layer and the condensing layer by bonding beads to the diffusion layer and thus, can condense the light transmitting the diffusion layer to the condensing layer through the separation part, thereby easily reducing the UGR without disposing the separate barrier rib structure between the diffusion layer and the condensing layer.

Abstract: Systems and methods for OLED lighting panels are provided in which a light extraction block is optically coupled to a light source. The light extraction block includes a plurality of non-parallel light emitting surface normals. At least one light diffusing layer covers a surface of the light extraction block. The light diffusing layer may be positioned, for example, on a light emitting surface of the light extraction block and/or on a mating surface of the light extraction block. The plurality of light emitting surface normals may be located on different non-parallel light emitting surfaces of the light extraction block, or on different points of a curved emitting surface. All of the light emitting surfaces and/or the mating surface, of the light extraction block may be covered by a light diffusing layer. The optical emission intensity and/or the optical emission color from the plurality of light emitting surface normals may be substantially equal.

Abstract: An optical sheet includes a light-passing base sheet, a plurality of light-passing first patterns formed on a front major surface of the base sheet, and a plurality of light-passing second patterns formed on a rear major surface of the base sheet. The first patterns protrude from the front surface of the base sheet, a top portion of each of the second patterns makes contact with the rear surface of the second patterns while a larger lower surface of each of the second patterns is exposed to serve as a light receiving surface. Voids having relatively low refractive indices are formed between the light-passing second patterns. The optical sheet employs just one base sheet in one embodiment, thereby reducing a manufacturing cost of the optical sheet.

Abstract: A light emitting device package is disclosed. The light emitting device package includes a body having a cavity, a light source mounted in the cavity, and at least one optical sheet located on the body to cover the cavity. The optical sheet includes a first layer and a second layer formed on the first layer, wherein the second layer includes a plurality of linear prism parts. At least one of the first layer and the second layer contains a light diffusive member. The light emitting device package has enhanced light emission efficiency and light distribution uniformity.

Abstract: The present invention provides a light guide plate comprising a light guide plate comprising an input surface for receiving light from a plurality of discrete light sources, an output surface for emitting light, and a bottom surface opposing to the output surface. At least one of the output surface and the bottom surface has a micro-pattern, the micro-pattern comprising micro-lenses distributed in a first direction y-axis that is parallel to the length direction and in a second direction x-axis that is parallel to the width direction.

Abstract: The present invention provides a light guide plate comprising an input surface for receiving light from a plurality of discrete light sources, an output surface for emitting light, and a bottom surface opposing to the output surface, wherein at least one of the output surface and the bottom surface has a micro-pattern, the micro-pattern consisting of a plurality of substantially identical micro-lenses, each micro-lens having a width, a length, and an orientation angle. The light guide plate further provides an area density D(x, y) of the micro-lenses varies in a first direction y-axis that is parallel to the length direction and in a second direction x-axis that is parallel to the width direction for y between starting line y0 and ending line, the area density D(x, y=y0) at the starting line y0 varying between a minimal value Dmin and a maximum value Dmax such that Dmin?1% and 100?Dmax/Dmin?2, and wherein the area density D(x,y) repeats in pitch P in the x-axis such that D(x,y)=D(x+P,y).

Abstract: A light-emitting device includes: a light guiding member; a plurality of light-emitting elements; and a reflection member. A light reflection/exit surface of the light guiding member has a concave-convex pattern including a plurality of convex portions reflecting light emitted from the light-emitting elements inward. On the assumption that L is a distance between the light-emitting elements, t is a thickness of the light guiding member, an incident angle ? of the light on the light reflection/exit surface is an angle between a line segment obtained by projecting a light path from the light-emitting element to the light reflection/exit surface and a line segment extending from a central point of the light-emitting element to the light reflection/exit surface, and ? is a maximum angle range of reflected light, a value of the angle range ? decreases as a value of the incident angle ? increases in a range of 0<?<tan-1 (L/t).

Abstract: Certain example embodiments relate to lighting system covers that include AR-coated textured glass, and/or methods of making the same. In certain example embodiments, at least one light source is provided proximate to a cover comprising a glass substrate. The glass substrate includes an anti-reflective (AR) coating on the surface that is closer to the at least one light source, and the glass substrate is textured (e.g., such that it is substantially prismatic in texture) on the surface opposite the AR-coated surface. The surface of the glass substrate on which the AR coating is formed may be a flat, irregular, or textured matte. An optional AR coating also may be formed on the textured surface of the glass substrate.

Abstract: A door assembly for a lighting fixture. Embodiments of the door assembly include a door frame defined by two frame sides and two frame ends that define a frame opening. A diffuser panel is positioned within the door frame to span the frame opening and a refractor extends along the length of the door frame. The refractor is retained on the door assembly at its ends. More specifically, in some embodiments an aperture having the profile of the refractor is provided in the end plate on each frame end. The ends of the refractor are inserted into the apertures of the end plates to retain the refractor on the door assembly by its ends.

Abstract: Certain embodiments of the invention may include system apparatus for providing a light diffusion and condensing fixture. According to an example embodiment, a light fixture is configured for illuminating subjects and it includes an enclosure cavity. The enclosure defines a cavity with an opening and one or more reflective inner surfaces. The light fixture also includes a frame structure defining an optical aperture and the frame structure is disposed proximate to the opening. The light fixture also includes two or more film tensioners associated with the frame structure. The light fixture also includes at least one light source positioned between the one or more reflective surface and a plane defined by the optical aperture. The light fixture further includes at least one optical film comprising at least one lenticular lens surface and the at least one optical film is suspended substantially parallel to the optical aperture by the two or more tensioners.

Abstract: A display apparatus capable of reliably supporting a display panel and making a juncture between displays inconspicuous is provided. A display includes a liquid crystal panel having a front surface and a back surface, a module containing a backlight unit for driving the liquid crystal panel, a rear surface side housing for protecting and holding the backlight unit, and a convex lens arranged to cover a frame region of the liquid crystal panel, for guiding light from the front surface of the liquid crystal panel to a front surface side of the frame region and supporting the liquid crystal panel from the front surface.

Abstract: An LED lamp includes: a plurality of light source units, each of which includes one or more LED chips and an emission surface through which light from the LED chips is emitted; and a lens unit having a plurality of lenses, each of which is located in front of the emission surface of each of the plurality of light source units.

Abstract: A light control member includes a plate-like member including a first flat surface and a second surface facing the first surface. The second surface has at least three prism line groups, each group including a plurality of substantially parallel linear prisms. Each one of the linear prisms of one prism line group intersects the linear prisms of other prism line groups at one intersection point, and each linear prism is formed into a convex shape having a substantially curved outer edge when viewed along its longitudinal direction.

Abstract: A light uniformization structure including a first material layer having a plurality of microstructures in a surface thereof, a second material layer having a plurality of microstructures in a surface thereof, and a spacer layer located between the first material layer and the second material layer. The refractive index of the spacer layer is smaller than a refractive index of the first material layer and a refractive index of the second material layer. A light emitting module including the light uniformization structure is also disclosed.

Abstract: An optical substrate having a structured surface that enhances brightness and reduces moiré effect. The optical substrate has a three-dimensionally varying, structured light output surface that comprises an irregular prismatic structure. The irregular prismatic structure may be viewed as comprising longitudinal prism blocks or rows thereof, arranged laterally defining peaks and valleys. Adjacent peaks, adjacent valleys, and/or adjacent peak and valley may be parallel or non-parallel, in an orderly, semi-orderly, random, or quasi-random manner. The lateral adjacent peaks, adjacent valleys, and/or adjacent peak and valley are not parallel. The adjacent irregular prism blocks may be irregular longitudinal sections having the same length, or random or quasi-random irregular sections having different lengths. The facets of each prism block may be flat, or curved (convexly and/or concavely).

Abstract: Disclosed is an optical sheet for use in liquid crystal displays, which simultaneously functions to uniformly diffuse light emitted from a light guide plate and a diffusion plate and to increase brightness, decreases the loss of light, and enables the fabrication of thinner liquid crystal displays.

Abstract: Disclosed herein is an indication plate including: a plate member including a light-transmitting material; and an indication part provided at a surface on one side with respect to the thickness direction of the plate member, wherein the indication part includes a light-shielding part including a light-shielding material and covering the surface on one side, and a convex portion including the light-transmitting material, the convex portion projecting from the surface on one side and being exposed from the light-shielding part; the convex portion has a circumferential surface projecting from the light-shielding part, and an end face connecting tip portions of the circumferential surface to each other, and a metallic foil having a light-transmitting property is attached to the end face.

Abstract: An illumination unit including: a light source; a light guide-diffuser that guides and diffuses source light from the light source; a selective translucent unit that reflects external light or reduces the transmission of external light, while also transmitting light guided from the light guide-diffuser; and a presentation surface that presents the source light that has been guided from the light guide-diffuser and transmitted through the selective translucent unit.

Abstract: A light guide plate (LGP) includes a first surface, a second surface, and a plurality of light incident surfaces. The first surface is a light-emitting surface. The light incident surfaces connect the first surface and the second surface. The second surface has a plurality of ring-shaped grooves. Depths of the ring-shaped grooves are gradually decreased from a place close to a center of the LGP towards places close to the light incident surfaces. Each of the ring-shaped grooves has a first ring-shaped side wall surface and a second ring-shaped side wall surface. The second ring-shaped side wall surface is opposite to the first ring-shaped side wall surface and located between a geometry center of the ring-shaped groove and the first ring-shaped side wall surface. The first ring-shaped side wall surface is a tilted surface. In addition, a light source apparatus is also provided.

Abstract: A light plate includes a light guide plate and four light source modules. The light source modules are disposed around the light guide plate. Each of the light source modules includes a first white light emitting element and a second white light emitting element. The first white light emitting element is capable of emitting a first white beam. The second white light emitting element disposed beside the first white light emitting element is capable of emitting a second white beam. The first white light emitting elements of the light source modules are mirror-symmetrical with respect to a first reference plane and a second reference plane. The second white light emitting elements of the light source modules are mirror-symmetrical with respect to the first reference plane and the second reference plane. The correlated color temperature (CCT) of the first white beam is greater than the CCT of the second white beam.

Abstract: An apparatus and method for producing a spatially uniform irradiance in an image plane are provided. The apparatus includes an array of light emitting diodes (LEDs) which generate light (i.e., an image). The apparatus combines the outputs of an array of the LEDs in such a way as to produce a spatially uniform irradiance in an image plane some distance away. The apparatus includes an array of lenslets to form images of the emitting areas of the individual LEDs. The lenslets have a magnification, size and spacing such that the images produced by the respective LEDs are adjacent to one another and not overlapping. The irradiance distribution in the image plane is equivalent to an image of an LED whose emitting area is equal to the total area of the LED array, and whose total power is equal to the total power of the LEDs in the LED array.

Abstract: A display apparatus includes; a plurality of light sources which emit a light, a display panel which displaying an image using the light, a light guide plate which guides the light emitted from the light sources to the display panel, and a plurality of reflection members that are spaced apart from each other and coupled with a first side of the light guide plate and a second side of the light guide plate facing the first side to reflect light traveling inside the light guide plate to the first and second sides, wherein the plurality of light sources include; a plurality of first light sources, each of the plurality of first light sources being arranged corresponding to an area between two adjacent reflection members of the plurality of reflection members on the first side and a plurality of second light sources each being arranged corresponding to an area between two reflection members on the second side.

Abstract: A light guide of the tapered-waveguide type includes an input slab for expanding a projected image between an input end and an output end, and an output slab arranged to receive rays from the said output end, and to emit them at a point on its face that corresponds to the angle at which the ray is received. The input slab and output waveguide are matched so that all rays injected into the input end undergo the same number of reflections before leaving the output surface. With the invention, the input slab is itself tapered slightly towards the output waveguide. This means that input and output waveguides can be made the same length, in the direction of ray travel, and can therefore be folded over each other with no wasted space.

Abstract: An edge-type backlight module and a direct-type backlight module with a optical device are provided. The optical device comprises an array layer and a second refractive layer. The array layer has a first refractive index (n1) and contains pluralities of lenticular lens disposed on a base surface side by side. The lenticular lens contains a curving structure with a peak, a trough, a curvature radius (R), a width (P) and an altitude (H) between the peak and the trough. The trough is disposed on the base1 surface. The array layer has a first critical angle (?1c) relative to the normal of the base surface and satisfies ? 1 ? c = sin - 1 ? ( 1 n 1 ) and H = R 1 + K ? [ 1 - 1 - ( 1 + K ) ? ( P 2 ? R ) 2 ] . The conical constant (K) of the lenticular lens ranges from ?2.1 to ?1.5.

Abstract: A light guide guides light from a light emitter that is adjacent to an aperture of an electronic device. The light is eventually emitted from the aperture, to thereby provide lighting. The light guide can include a plurality of prisms which can thereby permit reduction in the overall thickness of the electronic device.

Abstract: The present invention relates to an optical assembly, a backlight unit, and a display apparatus thereof. According to an embodiment of the present invention, an optical assembly includes a first layer; a plurality of light sources disposed over the first layer; and a second layer that is disposed above the first layer and cover the plurality of light sources on the first layer, wherein the plurality of light sources are disposed as a first light source array and a second light source array, the first light source array including first lines of light sources among the plurality of light sources, the second light source array including second lines of light sources among the plurality of light sources, the first and second lines being alternatively disposed.

Abstract: Light redirecting film including a thin optically transparent substrate having a pattern of individual optical elements of well-defined shape on 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 intersecting each other over an intersection volume of the intersecting optical elements.

Abstract: A brightness enhancement film including a light transmissive substrate, convex lens portions, concave lens portions, and a reflective layer is provided. The light transmissive substrate has a first surface and a second surface opposite to the first surface. The convex lens portions are disposed on the first surface. Each of the convex lens portions has a curved convex surface facing away from the light transmissive substrate. The concave lens portions are disposed on the first surface. The convex lens portions and the concave lens portions are alternately arranged. Each of the concave lens portions has a curved concave surface facing away from the light transmissive substrate. A wavy continuous curve surface is formed by the curved convex surfaces and the curved concave surfaces. The reflective layer is disposed on the second surface and has light passing openings respectively on the optical axes of the convex lens portions.

Abstract: The invention relates to an illumination device (10) for illuminating a surface (101), with at least one lighting element (20) and an illuminating body (30), wherein the lighting element (20) emits an artificial light (21,21), a housing element (40) comprises the lighting element (20) and supports the illuminating body (30), the illuminating body (30) comprises a transparent light conductive material suitable to illuminate the surface (101) lying subjacent. The invention discloses, that the illuminating body (30) comprises a surface pattern (80), forming a Fresnel-type lens to optically magnify the surface (101).

Abstract: Various embodiments are disclosed that relate to scanning the direction of light emitted from optical collimators. For example, one disclosed embodiment provides a system for scanning collimated light, the system comprising an optical wedge, a light injection system, and a controller. The optical wedge comprises a thin end, a thick end opposite the thin end, a viewing surface extending at least partially between the thick end and the thin end, and a back surface opposite the viewing surface. The thick end of the optical wedge further comprises an end reflector comprising a faceted lens structure. The light injection system is configured to inject light into the thin end of the optical wedge, and the controller is configured to control the location along the thin end of the optical wedge at which the light injection system injects light.

Abstract: Certain embodiments may include system apparatus for providing optical film lens assemblies, light fixtures, and film tensioning frame. According to an example embodiment, a lens assembly is configured for modifying light from a light source associated with a light fixture enclosure, wherein the lens assembly is characterized by one or more optical films that are characterized by at least one or more lenticular surfaces. The lens assembly is further characterized by a curved plane. According to an example embodiment, a film-tensioning frame is characterized by a frame with four corners, wherein one or more film sheets are attached to the top or bottom of the frame at least at the four corners of the frame, and wherein the one or more film sheets are tensioned on the frame by elastic potential energy imparted into the frame before attachment of the one or more film sheets.

Abstract: Certain examples relate to lighting system covers that include AR-coated textured glass, and/or methods of making the same. In certain examples, at least one light source is provided proximate to a cover comprising a glass substrate. The glass substrate includes an anti-reflective (AR) coating on the surface that is closer to the at least one light source, and the glass substrate is textured (e.g., such that it is substantially prismatic in texture) on the surface opposite the AR-coated surface. The surface of the glass substrate on which the AR coating is formed may be a flat, irregular, or textured matte. An optional AR coating also may be formed on the textured surface of the glass substrate.

Abstract: Light redirecting film including a thin optically transparent substrate having a pattern of individual optical elements of well-defined shape on 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 intersecting each other over an intersection volume of the intersecting optical elements.

Abstract: An optical plate having improved light scattering power, a method of manufacturing the same and a liquid crystal display having the same. An optical plate includes a base material layer, and a lens portion having a plurality of unit lenses formed on one surface of the base material layer, each of the unit lenses having a convex shape, wherein a diffusion portion is formed in each of the unit lenses. The amount and cost of the light diffusing agent can be reduced, light transmittance can be improved, light uniformity can be enhanced without occurrence of bright lines, and intensity of light to be viewed is improved, thereby enhancing luminance.

Abstract: A lens array includes a plurality of lenses having respective optical axes that are approximately parallel to each other, wherein the plurality of lenses are configured in a direction approximately perpendicular to the optical axes and are formed integrally with each other, and a maximum inclination angle of a lens surface on each of a predetermined number of the plurality of lenses is less than or equal 50.8 degrees or less, the maximum inclination angle being defined as a maximum value of an angle formed by an optical axis and a normal line of a lens surface of one of the predetermined number of the plurality of lenses.

Abstract: The invention relates to an LGP and a back light module thereof, wherein the LGP comprises a light input surface, a bottom surface and a light output surface opposite to the bottom surface, and is characterized in that the bottom surface and/or the light output surface is provided with a plurality of microstructures, distribution rules for microstructures along the direction parallel to the light input surface of the LGP are: the microstructures in the middle of the LGP are closely arranged, and the microstructures on the two sides are sparsely arranged. In the LGP provided in the invention, the light output in the direction parallel to the light input surface can reach the brightness distribution with high middle and low edges, thereby achieving higher efficiency of light energy utilization.

Abstract: The present invention discloses a conveniently demountable assembled lamp. It is mainly composed of stand columns and clapboards, and multiple clapboards divide the stand columns into up and down multiple layers.

Abstract: A light-emitting panel comprising a plate-like translucent member (1) having a light-emitting front side (3) and, parallel thereto, a rear side (4) which has a plurality of cavities (2). Light can be coupled out by specular reflection from surfaces (8) of the cavities (2). Each cavity (2) has a side wall (7) and a bottom (8), which extends at an angle to said rear side (4). Each cavity (2) comprises a filler element (10) which is in optical contact with a major portion of the side wall (7) of the cavity (2), while there is a distance between the filler element (10) and the bottom (8) of the cavity (2) in order to form a closed space (11).

Abstract: Disclosed is a cover plate for a lighting fixture and a lighting fixture having the same, which achieves superior light diffusivity and light uniformity as well as superior light transmission in comparison with the prior art, thereby improving a luminance characteristic. The cover plate is arranged at an exterior of an light source of the light fixture so as to exit lighting emitted from the light source outward. The cover plate is made of light transmissive resin material having 5-35% of bubbles for light scattering, which has a diameter within a range of 60 ?m˜700 ?m, and exits light emitted from the light source while diffusing the light to the whole area of the cover plate.

Abstract: An object of the present invention is to provide a decorative illumination signboard capable of effectively downwardly emitting light while suppressing an upward emission of light with a simple configuration and a plastic sheet used in the decorative illumination signboard. The object can be accomplished by a plastic sheet having optical transparency which includes an exit surface and an incident surface on which a plurality of prism lines having a flat and smooth surface are arranged to be aligned. A shape of the prism in a cross-section perpendicular to a longitudinal direction of the prism line is formed by a side A on a lower side at an angle of ? degrees to a normal line of the exit surface and a side B on an upper side at an angle of ? degrees to the normal line of the exit surface and ?<?, and 40 degrees???80 degrees.

Abstract: An illuminating device includes a light source and a light diffusing plate. The light diffusing plate includes a light pervious substrate and a light diffusing structure. The light pervious substrate has a lower surface adjacent to the light source and an upper surface at an opposite side of the substrate to the lower surface. A through hole is defined in the substrate to expose a central portion of the light source. The light diffusing structure is formed at the upper surface and includes a plurality of first lens arrays radially extending from the through hole and a plurality of second lens arrays each arranged between two adjacent first lens arrays.

Abstract: An exemplary light diffusion plate includes a main body, and a plurality of diffusion particles dispersed in the main body. The main body includes a first surface and a second surface. The first surface and the second surface are on opposite sides of the main body. The first surface is a flat surface. The second surface defines a plurality of rectangular structures. Each rectangular structure defines four adjacent triangular pyramid depressions. A backlight module using the light diffusion plate is also provided.

Abstract: A display device has at least one light source for emitting light and a light guide plate having a first surface for inputting light emitted from the at least one light source, a second surface for outputting illumination light, and a third surface opposite to the second surface. A display element having dots for displaying image information is arranged over the second surface of the light guide plate for receiving the illumination light. At least two microprisms are arranged on the third surface of the light guide plate in areas overlapping the dots of the display element. Each microprism has a height in the range of from 1 ?m to 10 ?m and a mirror surface for reflecting light emitted from the at least one light source. Each mirror surface has a base disposed perpendicular to a light path of the light emitted from the at least one light source.

Abstract: An illumination device includes a light source module consisting of a substrate and a plurality of light emitting elements on the substrate in an array and an optical module array consisting of a plurality of optical modules covering the light emitting elements. Each optical module includes a first optical component and a second optical component. A first illumination distribution pattern is generated by light from the light emitting elements and modulated by the first optical components. A second illumination distribution pattern is generated by light from the light emitting elements and modulated by the second optical components. An illumination distribution pattern of the illumination device is superposition of the first illumination distribution pattern and the second illumination distribution pattern.

Abstract: An illuminating device capable of decreasing not only in-plane luminance unevenness in the front face direction but also in-plane luminance unevenness when viewed from a diagonal direction is provided.

Abstract: A display unit which the view angle is limited and the front luminance is improved is provided. The display unit includes a display device, and a light guiding part which is provided to face the display device, has an incident face on the side opposing to the display device, an emitting face on the opposite side of the display device, and a reflective face on the side face, and has a cross section expanding from the incident face to the emitting face.

Abstract: A housing includes a housing underpart, the housing underpart being provided with a housing cavity. The housing cavity comprises an opening on one housing side and, on the floor of the cavity, contains an electromagnetic radiation emitting semiconductor chip. A cover that is at least partially transparent to the electromagnetic radiation covers the housing cavity. A method for emitting electromagnetic radiation in a preferred direction is also disclosed.

Abstract: A plurality of organic light emitting diode (OLED) devices can be spatially distributed to form various lighting systems and luminaires. The lighting systems can be configured to readily replace conventional light bulbs or tubular fluorescent lamps. A networked lighting system including a plurality of OLED devices can have a variable light field based on a feedback.

Abstract: A backlight unit for a display device includes a mold frame and a light guide panel. The mold frame includes a groove having at least one rounded corner. The light guide panel is on the mold frame and includes a light guide projection in the groove, having at least one rounded corner corresponding to the at least one rounded corner of the mold frame groove.

Abstract: The present invention features a system for uniformly distributing luminance and a high degree of collimation from a back light module for flat-panel, liquid crystal displays (LCDs) simultaneously. A constant and uniform luminance output of the back light module in two directions is obtained through appropriate selection of lamps, geometry and optical components. An appropriate balance of lamps, lamp spacing, diffusers and light collimating optics are chosen to produce a high brightness back light module with very high intensity output over two very large surfaces. Variations in intensity over the illuminated area are minimized using light recycling in conjunction with the reflective diffusers and collimating optics. Precision collimators eliminate light beyond a defined angle, as required in tiled or monolithic flat-panel LCDs with predetermined display specifications.