Abstract: A projector includes: a light source having a plurality of light emitting sections; a light modulation device including a reflecting section adapted to reflect the light from the light source in accordance with image information; and a projection lens adapted to project an image formed by the light modulation device, wherein the light from the light source obliquely enters the reflecting section, the light source includes a first region where the light emitting sections are disposed at a first density, and a second region where the light emitting sections are disposed at a second density higher than the first density, and a distance between the first region and the reflecting section is shorter than a distance between the second region and the reflecting section.

Abstract: Disclosed is a light guide plate for use in a backlight module. The light guide plate includes a light incidence surface, a light exit surface, and a bottom surface opposite to the light exit surface. The light incidence surface is connected between the bottom surface and the light exit surface. The light guide plate has an interior in which an internal chamber is formed and includes two opposite sidewalls and an end wall that is connected between the two sidewalls and is substantially parallel to and spaced from the light incidence surface. The internal chamber include a light source provided at a connection site between the end wall and each of the two sidewalls, whereby light that enters through the light incidence surface and light emitting from the two light sources are subjected to refraction and/or reflection within the internal chamber and then project outward through the light exit surface.

Abstract: Systems and methods are disclosed herein for anti-collision lights. An anti-collision light (“ACL”) may include a light source, a primary reflector, and a secondary reflector. The primary reflector may have a concave side facing the light source and the secondary reflector. The secondary reflector may include a reflective cone and a reflective base. The ACL may be configured to efficiently distribute light from the light source according to Federal Aviation Administration ACL requirements.

Abstract: An illumination optical system comprises plural rod integrators, a combining optical system and a light transmission unit. The rod integrators uniformize light intensity distributions of the light beams. The combining optical system combines the light beams emitted from the rod integrators, so that the light beams are adjacent to each other in cross-sections thereof. The light transmission unit has an entrance plane and an exit plane, divides the light beam combined by the combining optical system into plural light beams on the entrance plane, joins the divided light beams so that a cross-sectional shape of a joined pattern of the light beams on the exit plane is different from a cross-sectional shape of a joined pattern of the light beams on the entrance plane, and transfers each of the light beams from the entrance plane to the exit plane using plural optically coupled light pipes.

Abstract: A lighting device may be provided that includes: a housing having a top opening and a bottom opening; an optical plate disposed in the top opening; heat sink disposed in the bottom opening; a driving unit which is received in the housing, disposed between the optical plate and the heat sink and receives external electric power; and light source which is received in the housing, disposed between the optical plate and the driving unit, spatially separated from the driving unit and is electrically connected to the driving unit.

Abstract: A photo-sensor type touch device includes a screen, two light modules, a sensor, and a calculating unit. The screen has a displaying region to show images thereon. The light module emits linear invisible light to the displaying region. The invisible light is substantially perpendicular to a normal of the displaying region. The sensor senses a change of the invisible light on the displaying region when an object approaches the displaying region, and sends a signal out. The calculating unit is electrically connected to the sensor to receive the signal and calculate the signal to obtain a location of the object on the displaying region.

Abstract: An illuminating unit includes: a light source section including a laser light source; a first uniformizing optical member on which light from the light source section is incident; and a second uniformizing optical member including a plurality of first unit cells and a plurality of second unit cells and on which light from the first uniformizing optical member is incident. The first unit cells are arranged on a light incidence surface of the second uniformizing optical member and each have an anisotropic shape with a major-axis direction as a first direction and a minor-axis direction as a second direction, and the second unit cells are arranged on a light emission surface of the second uniformizing optical member and each have a shape protruding along both the first direction and the second direction.

Abstract: An illumination device includes: a light source section including a laser light source; a first uniformization optical member receiving light from the light source section; a second uniformization optical member receiving light from the first uniformization optical member; an optical device disposed on an optical path of outgoing light from the light source section; and a drive section vibrating the optical device.

Abstract: A luminaire including a light engine having a light source and a housing and a light-diffusing attachment that includes a frame secured to the housing of the light engine, a refracting lens supported by the frame, and a diffuser supported by the frame.

Abstract: The present invention provides a backlight module and a liquid crystal display apparatus. A light guide plate of the backlight module comprises hollow structures. Each of the hollow structures corresponds to one of the light sources and comprises two air layers with an included angle there-between, and the two air layers are a first hollow layer and a second hollow layer. A normal direction is vertical to the light-incident surface, and there is a first oblique angle between the first hollow layer and the normal direction, and there is a second oblique angle between the second hollow layer and the normal direction, and a depth of the hollow structures satisfies a predetermined equation.

Abstract: A light module comprises a light-exit section, a base light source that exhibits at least one LED with a light-emitting surface limited by an edge, a reflector open to the light-exit section for collimating light on a meridional plane, and a cylinder lens for collimating the light on a sagittal plane running perpendicular to the meridional plane. The reflector on the sagittal plane is free of curvature and is curved on the meridional plane such that a focal line is defined. The base light source is arranged such that the edge runs on the focal line, and the light-emitting surface proceeds from the focal line extending in a direction of the light-exit section so that the light radiated from the light module exhibits a basic light distribution with a “light/dark” boundary.

Abstract: An illumination device, includes a printed circuit board, a plurality of LED light sources mounted on the printed circuit board, a hollow supporting post covering the plurality of LED light sources, a reflective cup located above the supporting post, a first lens received in a bottom portion of the reflective cup and a second lens located at a top portion of the reflective cup. The supporting post is connected to the printed circuit board, and the first lens is connected to the supporting post. The reflective cup includes a bottom portion adjacent to the LED light sources and a top portion remote from the LED light sources. The printed circuit board, the reflective cup, the first lens and the second lens are combined as a whole by the supporting post.

Abstract: A lens for diverging light includes a bottom surface, a recess defined in the bottom surface, a lower inner curved surface in the recess, and an upper outer curved surface. The lower inner curved surface is configured for receiving light emitted from a light source. The lower inner curved surface includes an inwardly curved lower portion adjacent to the bottom surface, a flat surface portion arranged at a center of a bottom in the recess, and an inwardly curved intermediate portion connected between the lower portion and the flat surface portion. The upper outer curved surface faces away from the bottom surface.

Abstract: Embodiments described herein provide an optical system having a light source (e.g., LED) and a high numerical aperture multi-element optical stack. According to one embodiment, the optical stack can reimage an entrance aperture. The multi-element optical stack can include a number of optical elements forming a series of lenses. The series of lenses comprises, a first lens positioned to receive light emitted in a first beam angle and a second lens more distal from the LED than the first lens, the second lens defining a second lens exit aperture that has at least a minimum area necessary to conserve radiance for the emission beam angle in air. The lenses in said series of lenses are configured, in combination, to successively reduce a beam angle of light from the first beam angle to the emission beam angle.

Abstract: The light emitting element includes and active layer that produces light; a polarizer layer having a first region that allows a polarization component in a first direction in the light produced in the active layer to pass through and reflects other polarization components, and a second region that allows a polarization component in a second direction perpendicular to the first direction to pass through and reflects other polarization components; a wave plate layer having a third region and a fifth region that the light exiting from the first region enters, and a fourth region and a sixth region that the light exiting from the second region enters, the wave plate layer causing the lights that have entered the third to sixth regions to exit as lights in the same polarized state; and a reflective layer that reflects the lights reflected by the first region and the second region.

Abstract: An illumination device (1) has a light-emitting element (6b), and a luminous flux control member (6c) that includes a first lens (10) and a second lens (20). The first lens (10) and the second lens (20) are assembled such that a first surface (10c) and a second rear surface (20a) are in contact, or such that a minute gap exists between the first surface (10c) and the second rear surface (20a). A first conical concave surface (10d) having its apex on the central axis (C) is formed by indenting a first rear surface (10a). A second concave surface (20d), having its apex on the central axis (C) and having a curved shape the curvature of which decreases as the distance from the central axis increases, is formed by indenting a second surface (20c).

Abstract: One embodiment provides light along an optical axis. It comprises a substrate and at least one array of multiple LED chips without individual packaging supported by the substrate. The LED chips emit light within different wavelength ranges and are distributed laterally with respect to the axis over an area, the LED chips having light emitting surfaces for emitting light in directions transverse to the area. An optical element adjacent to the light emitting surfaces of the LED chips in the at least one array collects and directs light emitted by the LED chips of the at least one array along the axis towards a target. Another embodiment is directed to a method for providing multiple wavelength light for fluorescent microscopy using the above system. Electric current is supplied to the multiple LED chips, causing them to emit light of multiple wavelengths.

Abstract: A LED array spot illuminator for providing light along an optical axis comprises a substrate and at least one array of multiple LED chips without individual packaging supported by the substrate, wherein the LED chips emit light within the same or different wavelength ranges and are distributed laterally with respect to the axis over a light-emitting area. The LED chips have light emitting surfaces for emitting light in directions transverse to the area. An optical device collects and directs light emitted by the LED chips of the at least one array along the axis. An aperture passes the light emitted by the LED chips of the at least one array along the axis, wherein light collected by the optical device and passed by the aperture forms a beam of light illuminating a spot. Electric current is supplied to the multiple LED chips, causing them to emit light. Light emitted by the multiple LED chips that passed through the optical device and the aperture form a beam of light illuminating a spot.

Abstract: A lens used for a line generating optical system is provided, wherein X-axis is defined in longitudinal direction of the generated line, Y-axis is defined in width direction and Z-axis is defined in direction of the optical axis and wherein the lens has an optical surface which does not collimate the light in X-axis direction and which collimates or collects the light in Y-axis direction alone, inclination of direction of transferred tool mark with respect to X-axis being from 40 to 50 degrees in an area of 80% or more of the optical surface.

Abstract: A method for manufacturing an optical lens includes providing an uncured light diffusion body, the light diffusion body comprising a first optical surface located at a bottom thereof, and a second optical surface located at a top thereof and arranged oppositely to the first optical surface, the light diffusion body defining a receiving cavity recessed from a central portion of the second optical surface toward the first optical surface; introducing a light transmissive material doped with diffusion particles into the receiving cavity to a desired thickness; and solidifying the light transmissive material and the light diffusion body. An optical lens manufactured by the method and a light source module incorporating the optical lens are also provided.

Abstract: The present invention provides an illumination beam shaping system, which enables the emergent surface of a lighting system of light excitation chips to emit a light beam of uniform illumination brightness. The present invention uses a dividing device, structured from curved lenses arranged in an array, to effect a pre-dividing operation on the total quantity of light from a light excitation chip, after which post-diffusion is carried out to form a light beam with uniform illumination brightness. A plurality of conical light beams in an array are shaped and emerge from an output side, and the bottom portion of each of the conical light beams form an actual optical surface, which act on an optical diffusing component for refraction and diffusion processing, thereby enabling the emergent face of the system to obtain uniform illumination brightness.

Abstract: The present invention provides an apparatus for controlling a three-dimensional optical field. The apparatus includes a light-emission device and a set of zoom elements. The light-emission device emits a light. The set of zoom elements are disposed in front of the light-emission device, and focus the light from the light-emission device.

Abstract: A device and method for providing a laser system utilizing high efficiency lasers emitters and optionally the high quality beam characteristics of a crystal gain medium single mode laser for emitting beamlets and utilizing an optical and mechanical method of forming the beam and directing it to the desired target using both a concave and a partially reflective convex mirror to reflect the beamlets, with the convex mirror transmitting a portion of the beamlets to a transmission medium for emitting the beamlets as a laser beam.

Abstract: A compound lens includes a first lens and a second lens coupled to the first lens. The first lens has a light incident face and a light exit face opposite to the light incident face thereof. The first lens defines a recess at a center of the light exit face thereof. The second lens has a refractive index lower than that of the first lens. The second lens is received in the recess of the first lens and a light incident face of the second lens directly contacts the light exit face of the first lens. A light emitting diode light source device incorporating the compound lens is also provided.

Abstract: The present disclose relates to a lens unit. The lens unit includes a first lens and a second lens. The first lens includes a first light input surface, a first light output surface opposite to the first light input surface and a first side surface connected to the first light output surface. The first lens has a first refractive index. The second lens defines a cavity at a light input surface thereof for receiving the first lens. The second light output surface of the second lens contacts the first light output surface and the first side surface of the first lens. The second lens has a second refractive index which less than the first refractive index. The present disclose also relates to a light source module with the lens unit.

Abstract: A light source apparatus includes a light emitting device that has a first light emitting region outputting first excitation light and a second light emitting region outputting second excitation light, a phosphor layer that is so provided that the phosphor layer coincides with the first light emitting region in a plan view and emits fluorescence light, a reflector that is provided on the opposite side of the phosphor layer to the light emitting device, transmits the fluorescence light, and reflects the excitation light, and a light guide section that is disposed on an optical path between the phosphor layer and the reflector, and guides the second excitation light reflected off the reflector such that at least part of the reflected second excitation light enters the phosphor layer.

Abstract: A lens unit includes a first lens plate including first lenses arranged in a first direction and configured to form an intermediate image being an inverted reduced image of an object, a second lens plate including second lenses arranged in the first direction and configured to form an inverted enlarged image of the intermediate image on a light reception surface, and a positioning portion being in contact with both a butting portion formed on the first lens plate and a butting portion formed on the second lens plate.

Abstract: A lamp comprises a thin layer of phosphor (105,113) which is irradiated (46), for example by ultraviolet radiation, by a source which typically comprises a laser diode and a condenser (101,111). This causes the phosphor (105,113) to emit visible light with a Lambertion-type emission pattern. An optical system such as a reflector (102,115) concentrates the light from the phosphor (105,113). The phosphor (105,113) is thermally connected to a heatsink (103,116), of example by a plate (114) of sapphire glass, so as to dissipate the heat produced by the phosphor (105,113). The phosphor (105) may be mounted on a plane reflector (104) disposed on or comprising the heatsink (103) and facing a curved reflector (102) and the radiation source. Alternatively, the optical system may have an optical axis and the phosphor (113) may be substantially flat and inclined with the respect to the optical axis.

Abstract: The present invention relates to an illumination system for use in a stereolithography apparatus. The illumination system includes a plurality of light-emitting diodes (LEDs), each LED having at least a first light-emitting surface and a second surface, at least one of the first and the second surface being substantially flat. The illumination further includes a plurality of electrical pathways, selectively connected to the respective LEDs, such that each LED can be individually controlled and a leveling surface. The leveling surface is substantially flat and in leveling contact with the at least one substantially flat surface of each LED, such that a two-dimensional array of LEDs extends in a plane parallel to the leveling surface.

Abstract: An examination light apparatus including a touch-less control component that enables a user to control the apparatus without requiring physical contact between the user and the apparatus. The apparatus employs an LED control component that is configured to adapt its electrical interface to a variable quantity of light emitting diodes in order to interface with each of a plurality of lamp heads that each can include a unique arrangement and quantity of light emitting diodes. The light emitting diodes (LEDs) provide a high level of light quality, quantity and intensity (luminosity) while requiring low power consumption and low space and weight requirements and are employed without requiring a cooling fan. Uniform mechanical and electrical interfaces between the control component and other portions of the examination lamp provide for efficient and simple manufacturing of various examination light configurations.

Abstract: Embodiments described herein provide an optical system having a light source (e.g., LED) and a high numerical aperture multi-element optical stack. According to one embodiment, the optical stack can reimage an entrance aperture. The multi-element optical stack can include a number of optical elements forming a series of lenses. The series of lenses comprises, a first lens positioned to receive light emitted in a first beam angle and a second lens more distal from the LED than the first lens, the second lens defining a second lens exit aperture that has at least a minimum area necessary to conserve radiance for the emission beam angle in air. The lenses in said series of lenses are configured, in combination, to successively reduce a beam angle of light from the first beam angle to the emission beam angle.

Abstract: This optical system includes: a device (106) for generating a plane light wave, called a collimated light wave (OLcol); and a device (114) for deviating the collimated light wave so as to provide a light wave, called a test light wave (OLtest), the deviating device (114) having an adjustable focal length.

Abstract: A display apparatus includes a light source, a display panel and an optical plate between the light source and the display panel. The optical plate includes a supporting sheet, a first, a second and a third optical layer. The first optical layer is disposed on a bottom surface of the supporting sheet and has a plurality of first protruding portions on a bottom surface of the first optical layer and has a first refractive index. The second optical layer is disposed on the bottom surface of the first optical layer and covers the first protruding portions. The second optical layer has a second refractive index larger than the first refractive index. The third optical layer is disposed on a top surface of the supporting sheet and has a plurality of second protruding portions on a top surface and has a third refractive index smaller than the second refractive index.

Abstract: A backlight assembly that is adapted for use with an image displaying flat panel includes a light guide plate assembly and one or more light sources disposed under the light guide plate assembly. An upper portion of the light guide plate assembly is overlapped by a display area of the flat panel while a lower portion is disposed under the upper portion, and includes light guiding material for redirecting sourced light as well as reflectors for also redirecting light sourced from small, light sourcing areas underneath the upper portion for redistribution into the larger area of light guiding material provided in the upper portion of the light guide plate assembly. The upper portion also has one or more light reflectors. In one embodiment, opposed ones of light sources are angled so they don't shine light directly into one another.

Abstract: A lighting system (10, 50, 70, 90) is provided comprising at least one light source (21, 91) and at least a first optical element (22, 92). The light source (21, 91) generates a light beam (12) and the first optical element (22, 92) refracts the light beam (12). The light source (21, 91) and the first optical element (22, 92) are arranged such that the light source (21, 91) and/or the first optical element (22, 92) are movable under the influence of a gravitational field in such a way that a distance between the light source (21, 91) and the first optical element (22, 92) is dependent on an orientation of the lighting system (10, 50, 70, 90) with respect to the gravitational field.

Abstract: An light mixing illumination device includes an array (1) of a plurality of solid state light sources, and an array (2) of a plurality of collimating lenses, each collimating lens being aligned with a solid state light source to collimate the light emitted from the solid state light source into a near parallel light; and a pair of first (5) and second (6) fly-eye lenses, wherein the collimated light from the collimating lens array (2) passes through the first and second fly-eye lens successively.

Abstract: An LED illumination system includes a plurality of LED modules and a plurality of corresponding collimating lenses to provide increased brightness. Each LED module has at least one LED chip having a light emitting area that emits light and a recycling reflector. The reflector is positioned to reflect the light from the light emitting area back to the LED chip and has a transmissive aperture through which the emitted light exits. The collimating lenses are arranged to receive and collimate the light exiting from the LED modules.

Abstract: A lighting device having a light source and devices for changing the illumination area, comprising two arrangements made of transparent flat components with oblong imaging elements disposed next to each other in a parallel fashion, having a surface deviating from a plane on at least one side, the imaging properties of the component arrangements can be changeable and the longitudinal axes of the one component arrangement being perpendicular to those of the other, characterized in that the light source is a matrix-shaped arrangement of light emitting diodes.

Abstract: A lens module for divergently refracting light from an LED includes a first lens and a second lens matching with the first lens. The first lens is received in the second lens, and the first lens is spaced from the second lens. The LED is received in the first lens. A central axis of the first lens coincides with a central axis of the second lens. Light emitted from the LED and into the lens module is refracted out by the first lens and the second lens. The first and second lenses have different capabilities of refraction. This disclosure also relates an LED lighting module with the lens module.

Abstract: An illumination apparatus includes light sources; a light guide plate guiding lights from the light sources; a housing holding the light sources and the light guide plate; and an apparatus attachment part. The light sources are arranged around the apparatus attachment part 5, and the light guide plate 3 is provided outside the apparatus attachment part to face the housing and cover a front side of the light sources. The light guide plate includes a main light guide part guiding lights from the light sources toward an outer periphery of the light guide plate and scattering and emitting the lights to a surface of the main light guide part; and an auxiliary light guide part integrated with the main light guide part at an inner peripheral side of the main light guide part and guiding and emitting the lights from the light sources toward the central portion of the housing.

Abstract: A lighting device including a photoluminescent plate may be provided that includes a light source and a photoluminescent plate disposed over the light source. The photoluminescent plate includes a base layer and a first phosphor layer. The base layer transmits light and has a first roughness on one surface thereof. The first phosphor layer is disposed on the one surface of the base layer and includes a first phosphor.

Abstract: The present invention relates to a non-imaging optical lens and a light-emitting module having the same. The lens includes a concave region having a continuous curved optical surface formed by a plurality of facets spliced together. The continuous curved optical surface faces the light-emitting device. The curved surface consists of an array in at least three rows of the facets and at least three columns of the facets.

Abstract: A light pointer (e.g., laser pointer) comprises an optical fiber light source. Optionally, the output beam provided by the pointer may be adjustable from small output angles (substantially collimated beam, “spot” mode to larger output angles providing “flood” illumination. The light pointer may emit infrared light, for example.

Abstract: A diffuser and an optical system is provided in the present disclosure. The diffuser is configured to enhance the intensity of a light generated from a light source. The diffuser includes a transparent substrate, a transparent metalized layer, a bonding layer, and a plurality of light-penetrating microsphere balls. The transparent substrate has a first surface and a second surface. The transparent metalized layer is disposed on the first surface of the transparent substrate. The bonding layer is disposed on the transparent metalized layer. The plurality of light-penetrating microsphere balls are disposed on the bonding layer. The first surface is opposite to the second surface, and the light enters the diffuser from the second surface of the transparent substrate.

Abstract: A light-directing apparatus for predominantly forward distribution of light from a light emitter having an emitter axis. The light-directing apparatus includes a forward-reflective surface entirely within a lens member positioned over the light emitter. The lens member has an outer surface and an inner cavity including an emitter-light-receiving void and a light-reflecting void which is contiguous with the emitter-light-receiving void and is different in configuration than the emitter-light-receiving void. The forward-reflective surface is in the light-reflecting void in position in the path of light emitted rearwardly.

Abstract: The invention relates to an explosion protection housing having a threaded opening. A threaded bushing comprising a glass body in the interior thereof is mounted in the threaded opening. The glass body has a diverging lens on the exterior and a converging lens on the interior. A light-emitting diode is present at the focal point of the converging lens. In this manner, that light impinging within the capture region of the converging lens is converted into parallel light passing through the glass body to the diverging lens. The parallel light bundle is converted back into a divergent light bundle by the diverging lens so that the emerging light is visible from a wide angle range.

Abstract: A light fixture may include LEDs that each emits light into a particular zone on a lens, where each zone has its own focal properties. Each LED may be grouped into one (or more) subset(s) that corresponds to the zone(s) struck by its emitted light. The LEDs may be selectively electrically controllable, so that the amount of light transmitted through each zone may be controllable by the electrical control system of the fixture. Because light transmitted through different zones emerges from the fixture having different widths, the electrical control system can directly control the amount of light emerging at each width. By mixing relatively narrow light with relatively wide light in the proper proportions, the electrical control system of the fixture may produce light having any desired angular profile between “narrow” and “wide”.

Abstract: A lighting assembly has an edge-lit light guide having a light output surface through which light is extracted by light extracting optical elements. The extracted light has a maximum intensity at low light ray angles relative to the light output surface. A light redirecting member has an arrangement of light redirecting optical elements configured to redirect the extracted light incident thereon to provide a pattern of redirected light. A light focusing member has light focusing optical elements having an angular acceptance range. The redirected light has light ray angles within the angular acceptance range of the light focusing optical elements and is perceived as a pattern of light. The extracted light not redirected by the light redirecting member has light ray angles outside the angular acceptance range of the light focusing optical elements and is not perceived, or is perceived as background light.

Abstract: A stage lighting fixture having: a casing having a closed first end and an open second end; a light source housed inside the casing, close to the first end, and which emits a light beam along an optical axis; an optical assembly positioned to intercept the light beam, and having a focal point located between the light source and the optical assembly; and a reflector coupled to the light source; the reflector and the light source being designed and coupled to concentrate the light beam substantially at a work point substantially coincident with the focal point of the optical assembly; and the light source being defined by a short-arc lamp to project a light bar.

Abstract: The present disclosure provides a lighting instrument. The lighting instrument includes a recessed light fixture, for example a troffer light or a batten light. The light fixture includes a plurality of light-emitting diode (LED) devices located on a board. The light fixture also includes a diffuser cap located on the board and housing the LED devices therein. The diffuser cap includes a plurality of coating regions. Each coating region is coated by a film containing white particles. The white particles can reflect and diffuse light emitted by the LED devices. The film in each coating region has a different white particle concentration level than other coating regions.