Abstract: An illumination system including a light source, a light guide including an output surface, emissive material positioned to receive light from the output surface of the light guide, and a first interference reflector positioned between the output surface of the light guide and the emissive material is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The first interference reflector substantially transmits light having the first optical characteristic and substantially reflects light having the second optical characteristic.

Abstract: An illumination system including a light source, a light guide including an output surface, emissive material positioned to receive light from the output surface of the light guide, and an interference reflector positioned such that the emissive material is between the output surface of the light guide and the interference reflector is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The interference reflector substantially transmits light having the second optical characteristic and substantially reflects light having the first optical characteristic.

Abstract: An illumination system including a light source, a light guide including an output surface, a first interference reflector positioned between the light source and the output surface of the light guide, and emissive material positioned between the first interference reflector and the output surface of the light guide is disclosed. The light source emits light having a first optical characteristic. The first interference reflector substantially transmits light having the first optical characteristic and substantially reflects light having a second optical characteristic. The emissive material emits light having the second optical characteristic when illuminated with light having the first optical characteristic.

Abstract: To obtain a planar light source which is free from brightness variations or chromaticity variations by using a point light source having a high directivity for emitted light, and to provide a liquid crystal display device capable of obtaining superior display characteristics by using this planar light source device. A planar light source device having an opening in the upper surface comprises a hollow box, a diffusion plate disposed in the opening, a reflecting plate disposed on the bottom of the hollow region of the box, and a plurality of point light sources disposed in a row along at least one side surface of the box.

Abstract: A liquid crystal display and a backlight module thereof are provided. A backlight module comprises a light source, a reflector, and a bottom plate. The reflector is disposed under the light source. The bottom plate is disposed under the reflector and facing a lower surface of the reflector. The bottom plate comprises a plurality of trench structures formed on a surface thereof facing the reflector. Heat-produced by the light source mixes with air in the trench structures, and the mixture of heat and air is conducted via the trench structures to the bottom plate, thereby dissipating heat.

Abstract: A flat illumination device such as may be used in a liquid crystal display device, includes a light guiding plate having a front and a rear surface and at least one illumination window. The device further includes a light source that is coupled to an edge of the light guiding plate by means of an energy conserving coupling section, and which provides light that is conditioned and transmitted through the light guiding plate. Light extractors are disposed on at least one side of the light guiding plate to assist in the transmission and conditioning of the light that is provided to the light guiding plate by the light sources. Extractors form a non-uniform pattern that is a two-dimensional, non-monotonic irregular function of the distance of their elementary area a point on the perimeter of the light guiding plate.

Abstract: A backlight unit with a supporter is provided. The backlight unit at least comprises a bottom cover, a lamp, a diffuser and the supporter. The bottom cover has a first surface, a second surface opposite to the first surface and a hole formed on the bottom cover, through the first surface to the second surface. The lamp is disposed on the first surface of the bottom cover. The diffuser is disposed over the lamp. The supporter comprises a body, a pillar and a clip. The body of the supporter is disposed on the first surface of the bottom cover, for supporting the diffuser. The pillar is abutting to the body and protruding through the hole. The clip is disposed on the second surface for clamping the pillar.

Abstract: A flat light-emitting lamp includes a first common discharge unit for producing a first electrical discharge according to a first AC waveform having a first phase, a second common discharge unit for producing a second electrical discharge according to a second AC waveform having a second phase different from the first phase, and a plurality of discharge tubes each having first ends connected to the first common discharge unit and second ends connected to the second common discharge unit. The discharge tubes emit light according to the electrical discharges of the first and second common discharge units.

Abstract: A light guide for an LCD system has a light incident side, and is formed with a plurality of pattern structures. Each of the pattern structures has a pair of diagonally-disposed first points defining a first length therebetween, and a pair of diagonally-disposed second points defining a second length therebetween. The second length extends transverse to and crosses the first length. A ratio of the first length and the second length of one of the pattern structures adjacent to the light incident side is greater than a ratio of the first length and the second length of one of the pattern structures distant from the light incident side.

Abstract: In one embodiment, a light emitting panel includes a base panel and a plurality of light emitting elements mounted to the base panel. Each of the light emitting elements produces an illumination pattern having a region of substantially uniform intensity that extends over a radiation angle of at least about 60°. One or more light conditioners are positioned adjacent the base panel to receive and condition light produced by the light emitting elements.

Abstract: A lighting device (10) has an elongated light tube (12) to be used in combination with a holster (80) in a manner which will enable the holster (80) to hold the lighting device (10) as may be necessary and also enable the holster (80) to adjust the extent of illumination of the light tube (12) of the lighting device by light received from a light source (24) disposed within the lighting device (10) using magnets (66, 96).

Abstract: A light source having a light pipe and a light generation section. The light pipe includes a two-dimensional sheet of transparent material having a transparent top surface that is substantially parallel to a reflective bottom surface. The light pipe includes light pipe scattering centers that cause light traveling in the sheet of transparent material to be scattered in directions that allow some of the scattered light to escape the sheet through the top surface. The light generating section includes a plurality of LEDs and a mixing chamber. The LEDs are positioned to emit light into the mixing chamber. The mixing chamber includes an adapter having a wedge-shaped cavity with reflective walls. The cavity has an opening positioned to direct light into the light pipe. The mixing chamber includes scattering centers for redirecting light traveling in the cavity in directions that would not be obtained by reflection from the reflective walls.

Abstract: A multi-lamp arrangement for optical systems includes plural lamps and a collective light guide, where each lamp is positioned such as to transmit light into respective light guides that are both optically connected to the collective light guide. In one embodiment, one of the lamps is optically connected to the collective light guide by a mirror and-prism arrangement and an intermediate light guide and an intermediate mirror-and-prism arrangement. An augmented color modulator may be provided with a number of color fields, where the number of identical color fields is equal to the number of lamps.

Abstract: A plurality of reflecting structures are provided at the corner portions of a backlight module, so that the dark areas occurring at the corner portions or edges of the backlight module are prevented from forming, thereby uniforming the luminance performed by the display.

Abstract: An illuminating unit (28) is presented for use in an internally illuminated sign device (1) for displaying a pattern indicative of certain fixed information within an indicia area. The illuminating unit (28) comprises a light boundary structure (33) for a light source (38) to be mounted thereon.

Abstract: A light source device and projector using the same is provided. The light source device includes multiple light source modules and a multi-channel optical light tube. The multi-channel optical light tube includes multiple channels, each of which has a light guiding portion and corresponds to one or more of the light source modules. The light source module transmits the output light to the corresponding light channel, and the light guiding portion of each light channel is provided with a reflective surface for combining the light input through the light channels to the multi-channel optical light tube, thus providing the output of the light source device.

Abstract: An illumination system including a light source, a light guide including an output surface, emissive material positioned between the light source and the output surface of the light guide, and an interference reflector positioned between the emissive material and the output surface of the light guide is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The interference reflector substantially transmits light having the second optical characteristic and substantially reflects light having the first optical characteristic.

Abstract: A backlight unit, suitable for a large sized LCD device, includes a plurality of fluorescent lamps alternately provided under an LCD panel in at least two parts, formed by dividing a light-emitting surface. Adjacent end parts of the fluorescent lamps are overlapped partially. Each fluorescent lamp is shorter than a length (e.g., horizontal dimension) of the light-emitting surface. A reflective plate is provided below the plurality of fluorescent lamps, and has a rugged part underlying the overlapped portion of the fluorescent lamps. Alternatively or in addition, a light-scattering pattern can be provided in a portion of a light-scattering means, over the overlapped portion of the fluorescent lamps. The rugged part and/or light-scattering pattern prevents obscure rays in the overlapped portion and improves a uniformity of luminance of the backlight unit.

Abstract: To obtain a planar light source which is free from brightness variations or chromaticity variations by using a point light source having a high directivity for emitted light, and to provide a liquid crystal display device capable of obtaining superior display characteristics by using this planar light source device. A planar light source device having an opening in the upper surface comprises a hollow box, a diffusion plate disposed in the opening, a reflecting plate disposed on the bottom of the hollow region of the box, and a plurality of point light sources disposed in a row along at least one side surface of the box.

Abstract: This invention provides a hybrid fiber optic framing projector of high optical efficiency that emits no UV (ultraviolet) or IR (infrared) energy in the projected beam. A preferred embodiment includes a light source on an optical axis at the primary focus of an ellipsoidal cold mirror reflector. The ellipsoidal reflector focuses visible light from the light source to a conjugate focus through a dichroic hot mirror and then into a heat-absorbing, UV-absorbing glass rod. The glass rod transmits light by total internal reflection as an optical fiber from the conjugate focus to the focal plane of a collimating lens. A confocal reflector has a spherical radius about the light source, that radius being equal to the distance from the primary focus to the conjugate focus.

Abstract: An illumination system for a video-imaging device has a light source and a collector of light from the light source. The collector is formed according to the principles of non-imaging optics and receives a portion of the light from the light source. The collector is configured to reduce the angular distribution of the collected light from the light source to match the requirements of a digital pixelation device.

Abstract: An object of the invention is to achieve a high intensity, a compact structure, a cost reduction and a heat radiation of a liquid crystal panel, in a projection type video display apparatus employing a combination of LED light sources and a light pipe. The light pipe is formed in a hollow type so as to be utilized as a cooling wind path. Further, a permeable or reflective baffle plate is provided within the light pipe. Further, the light pipe is formed by coating a mirror on an inner surface of an optical case integrally formed by fixing optical parts. Further, a dichroic mirror is arranged in an LED light source outgoing surface.

Abstract: An illumination system including a light source, a light guide including an output surface, emissive material positioned to receive light from the output surface of the light guide, and a first interference reflector positioned between the output surface of the light guide and the emissive material is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The first interference reflector substantially transmits light having the first optical characteristic and substantially reflects light having the second optical characteristic.

Abstract: A multiple output illumination system includes a first and second reflectors each having an optical axis and a first and second focal points substantially on the optical axis. In one embodiment, one of the focal points of each reflector are proximate to one another, while the other focal point of each reflector is distal from each other. In another embodiment, the first and second reflectors are pairs of reflectors, and the second reflector of each points away from the optical axes of the first and second reflectors. An intermediate reflector may redirect radiation from the second reflectors. A source of electromagnetic radiation substantially proximate to the focal points that are proximate to one another produces rays of radiation that are reflected by the each reflector in different directions, converging substantially at each of the distal focal points. Light pipes placed substantially proximate to the distal focal points may collect the radiation.

Abstract: A display includes a display lightguide, on which a shape of a display character is formed in three dimensions, a light source, emitting a light toward the display lightguide, and a light collection portion, provided between the light source and the display lightguide, and having a light reflection face formed like a parabolic face which employs a straight line perpendicular to a light receiving face of the display lightguide as an axis thereof.

Abstract: An optical device with a first incidence plane configured to enter rays coming from a first direction, a second incidence plane configured to enter rays coming from a second direction different from the first direction, the rays which entered the first incidence plane being reflected by the second incidence plane, the rays which entered the second incidence plane being reflected by the first incidence plane, and an emission plane configured to mix the rays reflected by the first and second incidence planes and to emit the mixed rays in a predetermined direction different from the first and second directions.

Abstract: A guiding light plate applied to peripherals includes an LED (Light-Emitting Diode) disposed on a predetermined one of the peripherals, a reflection plate is disposed in the predetermined peripheral, and an image lid is arranged in front of the reflection plate. The reflection plate has a slot type light-guiding face, and the LED is arranged in a side of the light-guiding face. The image lid has at least one transparent image portion.

Abstract: A system composed of a plurality of light units with each light unit having different light emission properties. The component parts of each of the light units, such as optically effective components that influence the beam path of the light emitted by the lamp, and end cap reflectors are of a standard dimension so that light units of different configurations can use the same elements to reduce the number of different parts required for the group of different light units of the system.

Abstract: An illumination system including a light source, light guides coupled to the light source, each including an input surface and an output surface, emissive material positioned to receive light from at least one light guide, and a first interference reflector positioned between the emissive material and the output surfaces of the light guides is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The first interference reflector substantially transmits light having the first optical characteristic and substantially reflects light having the second optical characteristic.

Abstract: An illumination system including a light source, a light guide including an output surface, emissive material positioned to receive light from the output surface of the light guide, and an interference reflector positioned such that the emissive material is between the output surface of the light guide and the interference reflector is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The interference reflector substantially transmits light having the second optical characteristic and substantially reflects light having the first optical characteristic.

Abstract: The invention relates to a lighting unit with at least one light source and at least one optical waveguide following the light source, said waveguide having at least one light transmitting surface. To this end, the lighting unit has at least one reflector. In addition, at least one light transmitting surface of the optical waveguide faces the reflector. A lighting unit with an optical waveguide which has a large illuminated area and requires only a small space is provided.

Abstract: A light guiding member guides diffusion light using as a central axis a substantial center of the diffusion light emitted from a light source, and comprises a tapered rod and a pipe. The tapered rod comprises an incident end face, an emissive end face having an area larger than that of the incident end face, and a total reflection face which guides at least the diffusion light striking on the incident end face to the emissive end face by inner face reflection. The pipe is disposed in a position which is farther than a distance from the central axis to the total reflection face and comprises a reflection face or a reflection layer which coats the tapered rod.

Abstract: A multiple point decorative light strip, which is particularly structured from a plurality of light emitting tubes to form a strip form, a surface of which generates multiple point shining light spots. The light strip includes a plurality of the light emitting tubes, which are juxtaposed and connected to form the strip form. A plurality of optical fibers are disposed within each of the light emitting tubes, A plurality of light spot generating grooves are defined in a staggered arrangement on a circumferential surface of each of the optical fibers. Reflected stimulated light from the plurality of light spot generating grooves generates multiple point light spots that enable a surface of the strip to form a magnificently shining decorative lighting effect.

Abstract: In a backlight apparatus used in an LCD, in which upper and lower reflective plates are installed under upper and lower transparent plates, respectively. The lower transparent plates and the lower reflective plates introduce light generated by lower light sources in upward directions and the upper transparent plate and the upper reflective plates introduce light generated by an upper light source into those areas, which are not lighted by the lower light sources. This can prevent the formation of dark areas above the lower light sources thereby enhancing the overall uniformity of light.

Abstract: An illumination system including a light source, light guides coupled to the light source, each including an input surface and an output surface, emissive material positioned to receive light from at least one light guide, and an interference reflector positioned such that the emissive material is between the output surfaces of the light guides and the interference reflector is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The interference reflector substantially transmits light having the second optical characteristic and substantially reflects light having the first optical characteristic.

Abstract: A light collection system includes a substantially elliptical first reflector that defines first and second focal points on an axis. The first reflector has an annular region that encompasses the first focal point. The annular region has a width W that is the distance of its projection onto the axis in a direction perpendicular to the axis and the width W is less than or equal to about 1/20 of a distance Df between the first and second focal points. A second reflector has an aperture through the second reflector on the axis. The second reflector is shaped and positioned to reflect electromagnetic radiation from the annular region on the first reflector back to the annular region for reflection to a different portion of the annular region and back to the aperture.

Abstract: A panel, such as a component carrier or substrate, is provided with one or more penetrations. A light source associated with a surface of the panel and the corresponding end of each penetration provides light to the interior of the penetration, which guides the light to the other end of the penetration and corresponding surface of the panel. The penetration can be coated with a reflective material to improve its performance as a light guide. Alternatively or additionally, the penetration can be filled with a refractive material. A diffuser can be provided to diffuse light exiting the penetration. The light sources provides light to selected penetrations on demand such that the penetrations function as displays or elements of a display.

Abstract: A brightness enhancing structure for a reflective display. A plurality of transparent hemi-beads form a film substantially covering and protruding inwardly from the structure's inward surface. A corresponding plurality of microstructured toroidal lenses are provided on the structure's outward side. Each lens is optically coupled to an adjacent one of the hemi-beads to redirect incident light rays toward the adjacent hemi-bead, such that the redirected light is totally internally reflected by the hemi-bead and reflected back in a direction approximately opposite that of the incident rays. This substantially reduces undesirable dark, non-reflective circular regions of each hemi-bead which would otherwise exist in the absence of this invention.

Abstract: A lamp (10) is disclosed with a single or double-sided socket, whereby a bulb element (11) is arranged on the at least one socket (12), which surrounds a volume of space (14) and said lamp is provided with at least one LED element (13). An irradiation of the LED light into the bulb element occurs and, as a result of reflection, in particular total reflection, on the defining surfaces (16,17) of the bulb element a transmission of the LED light within the bulb element occurs.

Abstract: A backlight assembly includes a first light guide having a first light incident face, a first light reflective face connected to the first light incident face and having a stepped portion, and a first light exiting face facing the first light reflective face. The backlight assembly further includes a second light guide having a second light incident face corresponding to the first light incident face, a second light reflective face connected to the second light incident face and facing the first light reflective face, and second light exiting face facing the second light reflective face. A light reflective plate is inserted into a gap between the first and second light guides. The first and second display panels, respectively, are installed on the first light guide and the second light guide. The generated light is used more efficiently and the overall thickness of an LCD device is decreased.

Abstract: A light petal generation structure for optical fibers, especially applied to a decorative optical fiber, collects loss light at a nodule position, and directly transforms into an enlarged and bright light petal. The structure uses primarily an optical fiber with side losses, wherein light-dot generation grooves are opened at a cladding layer on an exterior circular surface at nodule positions. A reflection mirror facing a direction of incident light is emplaced in the generation grooves. A loss light is directly reflected by the reflection mirror, and enlarged through a curvature of a core of the optical fiber, thereby transforming into an enlarged and bright light petal on an exterior circular surface at the other side of a spun of optical fiber.

Abstract: An illumination system is provided with at least a first reflecting device that has a first focal point at the arc of an arc lamp. The second focal point of the reflecting device is located at the input end of a compound parabolic concentrator (CPC). The CPC is optically coupled with an optical integrator. Light exiting the optical integrator may be used in low étendue projection systems.

Abstract: Optical elements for semiconductor light emitting devices include a body that is configured to attach to a semiconductor light emitting device. The body includes an integral lens. A mirror is provided in and/or on the body. The body, the lens and the mirror are positioned such that, in operation, light that is emitted from the semiconductor light emitting device enters the body, is reflected from the mirror and passes through the lens to emerge from the body.

Abstract: The invention concerns a lighting or signalling device for a motor vehicle, which comprises: a linear light guide generated by the movement of a circular elementary section along a director line, the elementary section comprising a front peripheral lighting portion and a rear peripheral portion which comprises a rear light-diffusion segment; and a light source emitting rays entering the light guide through one end; of the type in which the rays propagate in the light guide by successive total reflections and in which the rays reaching the diffusion segment are diffused in particular towards the rear outside the length, and towards the front so as to be refracted through the front lighting portion, wherein it comprises at least one reflector which redirects forwards the rays which emerge through the rear peripheral portion.

Abstract: A direct backlight module. The direct backlight module includes a diffuser, a reflecting plate, an illumination tube and a support. The reflecting plate is disposed under the diffuser. The illumination tube is disposed between the diffuser and the reflecting plate. The support is disposed on the reflecting plate and between the diffuser and the reflecting plate. In addition, the support has a fitting portion into which the illumination tube directly fits. The support supports the diffuser and the illumination tube simultaneously.

Abstract: A display for a vehicle, including a light source, an optical device to guide light from the light source and form the light from the light source into a light pointer, a head portion disposed above a meter surface to project the light pointer formed by the optical device on the meter surface from above of the meter surface, a driving device to rotate the head portion, and a height adjusting mechanism to adjust a height of the head portion to the meter surface to be capable of changing a length of the light pointer while projecting the light pointer.

Abstract: Disclosed herein is a vertical light emitting type backlight module, for irradiating white light to the rear side of a liquid crystal display in the perpendicular direction.

Abstract: A backlight module, at least includes an outer frame, a bottom frame, an upper frame, a reflector and a light source. The upper frame and the bottom frame are mounted within the outer frame and are removably coupled to each other. The upper frame is disposed above the bottom frame and the bottom frame can be separated from the outer frame when the backlight module is inverted. The reflector is disposed under the upper frame and on the bottom frame and the reflector can be removed after the bottom frame is separated from the outer frame. The light source disposed under the upper frame and above the reflector and the light source can be changed after the reflector is removed. This backlight module enables users to directly exchange the light source by just simply taking out the bottom frame and the reflector sequentially. By this, the damage of the display panel, the multilayer optical film and the light guide plate caused by hitting and scratching during the exchanging process is prevented.

Abstract: A backlight unit includes front and rear emission surfaces and a plurality of lamps arranged in the central plane of the backlight unit, wherein the front and rear emission surfaces are inclined by +? and ?? degrees with respect to the central plane. The pitch of the lamps increases along the direction in which the distance between the emission surface and the central plane increases.

Abstract: A light source device which is uniform in the intensity of distribution of an emitted light and high in the optical utilization efficiency, a display device which is high in recognability and is energy-saving, and an information terminal are provided. A reflecting portion is formed on a surface opposed to an emitting surface of a linear light guide. The reflecting portion is periodically formed with a total reflecting surface guiding a light incident on a linear light guide from a point light source, a light extracting surface allowing the light to reflect in such a way as to emit the light guiding the linear light guide from the emitting surface, and a re-incidence plane which takes the light transmitted but not reflected on the light extracting surface into the linear light guide again. By changing the size of the light extracting surface and the re-incidence plane, the intensity of distribution of the emitting light from the linear light guide can be made uniform.