Abstract: An improved straight down-type backlight module assembly structure is described. A groove is disposed in a base in a position that facilitates detachment. The groove is used to receive a light-emitting component. When the light-emitting component is to be maintained or replaced, it is not necessary to make many unnecessary detachment actions, hence facilitating detachment and maintenance of the light-emitting component.

Abstract: A lighting device is described with an optical waveguide plate that has a light emission surface and a plurality of channels each with at least one substantially linear light source. The device is suitable in particular for use as a backlight a liquid crystal display, such as an LCD picture screen, or for use as a planar light source. The channels are provided with a reflecting first layer at their upper sides facing the light emission surface. The coupling of light into the optical waveguide plate takes place through side walls of the channels.

Abstract: Improved method and apparatus for hand-held portable illumination. A flashlight and corresponding method are described. The flashlight includes a housing, a plurality of LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LED units, wherein the flashlight is suitable for handheld portable operation by a user. In one embodiment, the first electrical circuit further includes a control circuit for maintaining a predetermined light output level of the LED units as a charge on a battery varies. In another embodiment, the control circuit maintains an average predetermined light output level of the LED units as the charge on the battery cell varies by changing a pulse width or frequency as the charge on the battery cell varies to maintain a given average light output.

Abstract: An improved straight down-type backlight module assembly structure is described. A groove is disposed in a base in a position that facilitates detachment. The groove is used to receive a light-emitting component. When the light-emitting component is to be maintained or replaced, it is not necessary to make many unnecessary detachment actions, hence facilitating detachment and maintenance of the light-emitting component.

Abstract: A light pipe may be used to illuminate an elongated area. Light may emanate laterally relative to the axis of the light pipe, and the light intensity is substantially uniform along the length of the light pipe. The light pipe may include a translucent member and a opaque reflective member that is separated from the translucent member by an air gap. A band of reflective material may be located on an exterior surface of the translucent member. The entire light pipe may be formed by co-extrusion of the translucent member, the band of reflective material and the opaque section through a single co-extrusion die. Light emitted laterally from the translucent member toward the arcuate opaque reflective member and band of reflective material may be reflected laterally through the translucent member transverse to the axis of the light pipe, so that all light extends through the front surface of the translucent member.

Abstract: An improved outdoor lighting shield is provided for more efficiently illuminating large areas, such as roadways and parking lots. The shield is comprised of a standard lighting base and bulb, a translucent diffusing cylinder wrapped around the bulb, a reflective strip mounted around the diffusing cylinder, a highly-reflective truncated cone, and a non-reflective inverted cone mounted on top of the truncated cone. The diffusing cylinder softens light to reduce glare in the areas closest to the streetlight. The reflective strip reflects excess light onto the truncated cone, which casts a powerful ring of undiffused light to areas further from the streetlight. Any light that would normally be thrown into the atmosphere, causing light pollution, is caught by the inverted cone, which casts diffused light directly below the streetlight.

Abstract: An image scanner including light sources, a light guide including a transparent member in the shape of a bar, a lens array receiving reflected light from a medium on an illumination area illuminated by a light exiting from the light guide and forming a light image of the medium, and a linear sensor converting the light image of the medium into image data. The light guide includes a scattering mark, a reflection surface having a curved surface, and a light exit surface. The shape of the reflection surface is determined so that the light scattered at the scattering mark is focused directly onto a predetermined position outside the transparent member. The shape of the curved surface of the reflection surface is such that the light scattered at the scattering mark should illuminate the predetermined position, where majority of contribution to the illumination is attributed to the reflected light.

Abstract: The present invention relates to a multi-angle reflector for use in a backlight unit. The back light unit comprises a plurality of lamps, a multi-angle reflector and a diffuser. The multi-angle reflector comprises a plate and a plurality of reflecting protrusions. The plate has a top surface toward to the lamps. The reflecting protrusions are respectively disposed on the top surface of the plate. Each reflecting protrusion has a reflecting surface. The reflecting surfaces have a plurality of reflecting angles corresponding to the top surface of the plate so that the light from lamps are adapted to reflect to the diffuser according to the reflecting angles. Therefore, according to the invention, the reflecting angles of the reflecting surfaces on the reflecting protrusions can be adjusted so as to suit to various actual conditions. The lights are uniform and the utility of the lights is improved. Because the reflecting protrusions are small, the reflector can be made into a thin type.

Abstract: A light pipe, including a transparent housing member characterized by a first refractive index, a light source positioned to shine a light beam through the transparent housing member, and at least one enclosed pocket positioned within the transparent member. The enclosed pocket is characterized by a second refractive index, wherein the first refractive index is substantially greater than the second refractive index. Light shining through the transparent member is totally internally reflected by the enclosed pocket.

Abstract: The present invention relates to a component for a motor-vehicle lighting or indicator device. According to the invention, it consists of a transparent material within which light-diffusion foci consisting of local discontinuities are situated only at predetermined locations in order to diffuse the light emitted by a light source associated with the lighting or indicator device.

Abstract: A light control sheet suitable for direction-controlling an angularly extending oblique input light, surface light source device and LCD using the light control sheet. A light control sheet is disposed along an emission face of a light guide plate direction-controls main and subsidiary light fluxes to cause them to be emitted toward a desired direction. Main beam S1 emitted from the emission face transmits (with a small refraction) through a first face, being inner-reflected (total reflection) by a first slope region and then outputted from a light output face (SS1). First subsidiary beam T1 transmits (with a small refraction) through the first face, being inner-reflected (total reflection) by a second slope region and then outputted from the light output face (TT1).

Abstract: A structure of an advertisement board is disclosed. The advertisement board comprises a case, a display module, two illumination modules and a power supply module. The display module comprises a transparent element having the advertisement pattern and/or letters thereon, and a reflection layer positioned on a back surface of the transparent element. The light from the illumination modules and/or an external source such as, sunlight, enters the transparent element from the sides and get reflected by the reflection layer to clearly display the advertisement pattern and/or letters. Thus the advertisement board of the present invention not only has a capability to perform excellent display functions but also has the capability to reduce the power consumption.

Abstract: This lighting system improves the illumination of enclosed spaces by reducing undesirable shadows. Elongated curved reflective surfaces at the upper periphery of the illuminated space reflect light from a central source to the activity area. Light arriving at the activity area from many directions softens or eliminates shadows. Appropriate lighting contrast may be selected at installation and maintained by simple adjustments in response to changes in layout, furnishings, and activities conducted in the illuminated area. Contrast may be controlled as needed by varying the ratio of light reflected from the periphery to that proceeding directly from the central source to the activity area. A smaller number of efficient, powerful light sources lowers power consumption, reduces fixture installation and wiring costs, and diminishes maintenance labor compared to conventional lighting systems.

Abstract: A reflection mechanism for illuminating insignia on a computer system is provided. The reflection mechanism uses one or more angled reflectors that diffuse light through transparent insignia provided in the housing of the computer system. Such use of angled reflectors reduces hot spots typically attributable to direct light projection and provides uniform illumination of the transparent portions of the insignia.

Abstract: A light guide plate (3) includes a parallelepiped block. The block includes an input surface (31) for receiving light beams irradiated from a light source; two side surfaces perpendicularly adjoining the incident surface; an output surface (32) perpendicularly adjoining the incident surface and the side surfaces; and a bottom surface (33) opposing to the output surface. An array of prisms (34) is integrally formed on the output surface. Each prism is shaped as a square pyramid. All the prisms have a same size and are arranged contiguously with each other. Alternatively, the light guide plate may be a wedge-shaped block (3′). A rectangular array of prisms (34′) is integrally formed on an output surface (32′) thereof. Each prism is shaped as a square pyramid. The prisms are arranged contiguously with each other, and sizes of the prisms gradually decrease from a thick end to a thin end of the block.

Abstract: A lamp assembly having a lens plate covering the opening and spaced from the lamp. The lens plate is provided with a multiplicity of microlenses such that the lens plate and lamp assembly generates a well defined light cone with a sharp demarcation between the dark region outside the light cone and the illuminated region within the light cone and the illumination within the light cone is homogeneous.

Abstract: A landscape light fixture to illuminate aesthetically desirable lighting. The landscape light fixture includes a ballast housing, a shroud, a light bulb, a lens, and a power cord with a connector. The landscape light fixture may also include a neck, a pivot, at least one mounting element, and at least one spacer.

Abstract: The invention concerns an illuminating spotlight emitting a narrow beam. The spotlight has a highly concentrated light source and a concave reflector for emitting an illuminating beam in a specific direction, along an emitting axis. A converging lens is interposed between the source and the reflector and in a plane passing through a conical segment. The source is bordered laterally on the reflector side with a sector of the converging lens providing a virtual image of the source located beyond the emitting axis, on the side opposite that of the lens. The virtual image of the light source is formed at the focus of the conical segment locally defining the reflector.

Abstract: The present invention relates to a light emitting diode reflector which is installed in portable lighting equipment such as electric torches. The light emitting diode reflector comprises a reflector which is a one piece parabolic mirror, a front cover which is placed upon the open end of the reflector and a light emitting diode which is mounted at the center of the front cover facing the reflector. The light emitting diode reflector increases the light intensity significantly to meet the user's requirement and maintains the advantage of energy saving of using a light emitting diode as the light source.

Abstract: A backlight assembly for use in a transmissive display system is described. The backlight assembly includes a light source that illuminates a light chamber. A transmissive display is positioned adjacent the light chamber so that light that exits the chamber illuminates the transmissive display.

Abstract: An apparatus for diffusing light. In representative embodiments, an apparatus is disclosed that comprises a semi-transparent material piece having a particulate distributed within the piece, wherein the particulate is capable of diffusing light passing through the piece. In a preselected direction, the thickness of the piece varies with position. When light enters the piece in the preselected direction, the piece diffuses the light more in regions of greater thickness than in regions of lesser thickness. In other representative embodiments, another apparatus is disclosed that comprises a light source, a reflector, and a semi-transparent material piece. The reflector is capable of redirecting light from the light source onto a surface of the piece. A particulate is distributed within the piece, wherein the particulate is capable of diffusing light passing through the piece. In a preselected direction, the thickness of the piece varies with position.

Abstract: A high-intensity lighting apparatus includes a housing, a lamp base mounted in the housing, and a lamp unit mounted on the lamp base. The lamp unit includes at least one light emitting diode and generates light that propagates rearwardly toward a curved reflector of the housing and that is reflected forwardly by the reflector.

Abstract: The invention describes an interior luminaire, in particular for the illumination of merchandise display surfaces, having a transparent luminaire shade (2) and an optical system (5, 6) with a light-emitting means (5), which is characterized in that the optical system (5, 6) is positioned in a light-emitting means space (3) provided above the luminaire shade (2) and radiates light into the luminaire shade through a light entry opening (2a) on the upper side thereof; and that an inwardly projecting, diffusely reflecting flange (9), which reflects at least a portion of the emerging light back into the luminaire shade (2), is provided at the lower rim of the luminaire shade (2).

Abstract: An electric lighting device which simulates the look of a wax candle. The device includes a body formed of relatively high melting temperature candle wax. A longitudinal channel runs between a top portion and a bottom portion of the body. In the bottom portion radial channels provided between the longitudinal channel and the circumferentional surface of the body. These channels provide ventilation to the candle body when the lighting device is in operation. A fix unit is also provided which has openings adapted to a line with the channels in the body so that air circulation is maintained when the candle body is placed in the base unit.

Abstract: A portable lamp for providing mixed direct and diffused light. The lamp is especially suited for providing pleasant lighting conditions at a table or workbench. A hollow cover is mounted upon a base. A light bulb inside the cover provides light, the bulb being powered by a self contained power source such as a battery. The cover, which may be spherical, has a translucent upper portion for transmitting diffused light, a medial transparent portion for transmitting undiffused light directly to the tabletop, and an opaque lower portion. A conical shaped reflector within the cover serves to reflect light emitted by the bulb to the translucent and transparent portions of the cover. Colored translucent disks may be removably attached inside the cover to add color to the diffused light.

Abstract: A vehicular lamp having an improved luminous intensity of reflected light that has passed through a tinted topcoat layer. Light emitted from a light source bulb is reflected by a reflector to form an outward beam. The reflector is formed of an effective reflector portion contributing to formation of the outward beam and a non-effective reflector portion not contributing to formation of the outward beam. Only the non-effective reflector portion or only the non-effective reflector portion and an extension portion are coated with a tinted topcoat layer. The particle diameter of pigments dispersed in the tinted topcoat layer is limited to a certain range.

Abstract: A signaling assembly is described and which includes a reflective substrate having opposite first and second surfaces, and wherein each of the surfaces simultaneously reflects visibly discernable electromagnetic radiation and passes electromagnetic radiation; and an emitter for emitting visibly discernable electromagnetic radiation is provided, and wherein the emitted visibly discernable electromagnetic radiation may be simultaneously viewed from locations forward of the opposite first and second surfaces.

Abstract: It is an object of the present invention to provide a panel light source device having a construction not only preventing a clearance between a reflecting sheet 5 and a light guide plate 1 from occurring, but also improving the luminance and uniformity in a light emitting surface at a low cost. A panel light source device includes a light guide plate 1 on a front face of which an optical sheet 2 is provided; a light emitter 3 to cause light to strike a side face of the light guide plate 1; a reflecting sheet 5, provided facing a rear face of the light guide plate 1, and an end of which wraps the light emitter 3 to reach the front face thereof; and a case 6, not only housing the light guide plate 1, the light emitter 3 and the reflecting sheet 5, but also equipped with a reflecting sheet contact section 20 causing part of a front face thereof to retreat toward a rear face side thereof to bring the part of a front face thereof into contact with the reflecting sheet 5.

Abstract: A gobo having linear motion is inserted to the narrow iris slot of a conventional ellipsoidal stage light. The linear moving pattern includes a housing, a drive roller and a motor, a return roller, and an endless pattern loop. The housing has a narrowed end for protruding into the instrument at the iris slot and holding the return roller on one side of the light. The housing has a broad end for mounting outside of the ellipsoidal stage light for holding the drive roller and motor at the other side of the light. The broad end of the housing has two spring-biased hinged clamps for clamping the linear moving pattern into a single unitary linear moving pattern iris insert. A first motor clamp holds the drive roller and motor in place. A second pattern clamp tensions and dimensions the endless pattern loop for extension into and out of the iris slot of the ellipsoidal light. The endless pattern loop is first threaded to the return roller and the return roller mounted to the narrow end of the housing.

Abstract: The present invention is generally directed towards a headlight assembly installed in a motor vehicle. The headlight assembly includes a reflector member, a light source and a light shield. In order to give the appearance during daytime that the reflector member is colored, the headlight assembly is provided with a colored ring around the reflector member. Additionally, the light shield is also coated with the same color.

Abstract: A combined lens includes a first luminescence surface, a second luminescence surface, a first concave surface for reducing surface reflection of light from the light source and for conducting the light to the first luminescence surface, and a second concave surface 26 for reducing surface reflection of the light from the light source and for conducting the light to the second luminescence surface. This allows the same status display to be provided in a plurality of directions by one light source.

Abstract: A lens mounted to a light emitting diode package internally redirects light within the lens so that a majority of light is emitted from the lens approximately perpendicular to a package axis of the light emitting diode package. In one embodiment, the light emitted by the light emitting diode package is refracted by a sawtooth portion of the lens and reflected by a total internal reflection portion of the lens.

Abstract: The Shimmerlight Aquarium Illuminator differs from conventional flourescent or incandescent aquarium light hoods in that it generates rays of light in the water which have motion and increased contrast, rather than simply flat, uniform light. It has natural underwater light movement.

Abstract: A taillight (stop and signal) for marine and utility trailers, as well as general use. The assembly consists of a light emitting diode (LED) array, circuitry and reflecting/diffracting surface which may have holographic characteristics all encapsulated in a clear resin. The reflecting/diffracting surface is positioned in the back of the assembly; its shape consists of a multitude of sharp edges or corrugations, forming a reflecting body. The LEDs within the array are directing their light beams on the knuckle edges of the reflecting body. Each light beam shows reflection on more than one surface. The reflected light beams generated induce a glow to the encapsulating medium. The duplication of the light beam results in an intensified array displaying a uniform light generation.

Abstract: The device includes a visible light source and a transmissive/reflective layer on a vehicle. The layer is between the source and an observer and transmits emergency warning signals of various colors to the observer. In addition, the layer reflects ambient light so that when the light source is not illuminated the appearance of the device is changed and the emergency warning colors, if any, of the device are masked.

Abstract: The object of the present invention is to effectively utilize the light rays emitted from a light source lamp 1, and, for accomplishing this object, a reflector 2 is made up of a first parabolic reflector 3 designed for reflecting light rays coming from the light source lamp 1 to be outputted as light rays parallel to the optical axis 6, second parabolic reflector 4 designed for reflecting light rays coming from the light source lamp 1 as outwardly inclined parallel light rays, and circular truncated conic reflector 5 for reflecting light rays coming from the second parabolic reflector 4 and outputted as light rays parallel to the optical axis 6. In this fashion, light rays which cannot be outputted due to being in the shadow of the spherical light source lamp can be outputted as light rays parallel to the optical axis 6.

Abstract: An illumination apparatus provides an output with high spatial uniformity of luminance. The illumination apparatus includes a cavity that has reflective surfaces and an output area. At least one light source is disposed in the cavity, with the light source including a point source (such as an LED) and an optical diverter having a flared (e.g., cuspated) reflecting surface. Light from the point source is distributed by the optical diverter towards the reflective surfaces within the cavity. Before exiting the device, light passes through an optical conditioning element that is positioned over the output area of the cavity. The optical conditioning element includes at least a diffuser, such as a translucent film or plastic sheet, and preferably also includes one or more prism sheets such as a brightness-enhancing film.

Abstract: The invention relates to a luminaire (1) comprising a reflector body (9) having a reflecting part (2) provided with a light reflective coating (5), and comprising contact means (6) for electrically connecting a light source. The coating (5) comprises at least two, light reflective particle groups, the groups exhibiting a mutually different color because of an interference layer (12a-d) provided on the particles (10a-d) which is different for the respective groups. A white color impression of the coating (5) is obtainable when the groups are jointly used in relative proportions in the coating (5). The coating (5) does not suffer from intrinsic absorption, or from color shift.

Abstract: The present invention is generally directed towards a headlight assembly installed in a motor vehicle. The headlight assembly includes a reflector member, a light source and a light shield. In order to give the appearance during daytime that the reflector member is colored, the headlight assembly is provided with a colored ring around the reflector member. Additionally, the light shield is also coated with the same color.

Abstract: The present invention concerns a line illumination apparatus and an image acquisition system, comprising a light guide including a transparent member in the shape of a bar, and a light source provided at the end of the light guide in the longitudinal direction relative to the light guide, wherein the light guide comprises a scattering mark configured to scatter a light transmitted inside the transparent member from the light source substantially vertical to the longitudinal direction relative to the transparent member, a reflection surface having a curved surface configured to reflect a light scattered at the scattering mark inside the transparent member, and a light exit surface configured to enable a light reflected at the reflection surface to exit outside the transparent member therethrough.

Abstract: A non-imaging optical coupler that is a figure of revolution combining a light-transmitting body defining a recessed input cavity, a transparent droplet-shaped encapsulant of a light-emitting diode, or array of diodes in the cavity, the body having a curved side wall shaped to totally internally reflect all the light emitted from the LED and encapsulant, traveling toward the side wall, within a predetermined distance from the diode or center of array, the body having a cylindrical transition section extending from a curved side wall and forwardly, and a planar exit face at the forward end of the body, transverse to the central axis of the figure of revolution.

Abstract: An attaching part of a reflecting mirror is fixed to a guardrail of a road. A solar cell device of a solar-powered light emitter accumulates electricity produce by sunlight of the daytime, and a light emitting diode emits light at nighttime. When a front panel is irradiated with light from a headlight of an automobile running at nighttime, the light is reflected off a diamond cut of a rear surface, in particular, then the light is reflected off the surface of an inner panel on which reflecting surface work is made, and the reflected light is irregularly reflected by the diamond cut surface, thereby functioning as a driving sign in combination with the emitted light from the light emitting diode. Dirt adhered to the front surface of the front panel peels off because of a self purification effect of titanium oxide on the front surface.

Abstract: A highly efficient luminaire. The luminaire includes a light source that emits light. The emitted light is redirected by a light transformer having a curved circular reflective interior surface, the reflective interior surface reflecting the light in a predetermined pattern. A substantial amount of light being may be reflected close to an axis coincident with a radial line defining a radius of the circular reflective interior surface. Additionally, a substantial amount of light may be reflected in a pattern with low divergency or parallel with an axis of the light transformer. The light is transmitted to the exterior of the luminaire by an optical window.

Abstract: An open type luminaire lens including a non-circular reflective lens having a metalized exterior surface and a prism section, the non-circular reflective lens having a shape generally defined by the combination of two parabolas, the prism section including and array of external reflecting prisms of varying predetermined shapes and varying predetermined sizes for use in providing a desired efficient light distribution.

Abstract: A fiber optic lamp includes a lamp housing having a stem section with a passageway therein and a reflector section having a reflective surface. The lamp housing also has first and second circular ledges for receiving and holding in place at least one lens within the lamp housing. A fiber optic cable is provided having a first end for insertion into the passageway of the lamp housing for transmitting light. The second end of the fiber optic cable is connected to a light pump having a light source therein for generating and transmitting light through the fiber optic cable. The fiber optic cable is connected to a socket member of a fixture housing for mounting the stem section of the lamp housing in the fixture housing.

Abstract: An under cabinet halogen light fixture with an internal wire raceway includes a housing having a base and a removable cover, which when mated, define a hollow interior. The light fixture also includes at least one lamp assembly mounted inside the housing. Adjacent each lamp assembly there is a corresponding bezel assembly mounted in a respective aperture formed in the cover. A wall member located in the base defines at least one internal wire raceway in the interior of the housing, which routes electrical wires to each lamp assembly from an external wire raceway, or from a hole in the base of the housing where the electrical wires enter the housing. If needed, the hole in the base of the housing is created by removing a punch out portion from the base. To mate the internal wire raceway with an external wire raceway, a breakaway portion formed in the housing adjacent the internal wire raceway is removed from the housing to create a passageway that is shaped to receive the external wire raceway.

Abstract: A portable lamp for providing mixed direct and diffused light. The lamp is especially suited for providing pleasant lighting conditions at a table or workbench. A hollow cover is mounted upon a base. A light bulb inside the cover provides light, the bulb being powered by a self contained power source such as a battery. The cover, which may be spherical, has a translucent upper portion for transmitting diffused light, a medial transparent portion for transmitting undiffused light directly to the tabletop, and an opaque lower portion. A conical shaped reflector within the cover serves to reflect light emitted by the bulb to the translucent and transparent portions of the cover. Colored translucent disks may be removably attached inside the cover to add color to the diffused light.

Abstract: Disclosed is a surface light source device suitable for backlighting film images in film scanner. The surface light source device comprises: a light source for emitting a light toward an optical path; a first reflector provided so that a reflective surface of said first reflector is vertical to the optical path; a second reflector provided between said light source and said first reflector so that a reflective surface of said second reflector is parallel to the optical path; an exit diffusing plate; and a plate on which a diffusing patter is provided, said plate being provided so as to be tilted with respect to the optical path in a direction such that light from the light source is reflected toward the second reflecting surface.

Abstract: A transparent film scanner having a light source with a diffuser and a reflector includes a light source for generating a primary light that is diffused by a diffuser to obtain a more uniform secondary light. The secondary light source is then reflected by a reflector to produce a tertiary light for illuminating the film. With a diffused secondary light, the distance between the reflector and the film can be reduced, thus reducing the size of the scanner.

Abstract: A luminaire reflector for light sources is provided having a reflective metal housing to be positioned around a light source, the housing being provided with a translucent or transparent upper section through which light from the light source can exit in an upward direction while light from the reflective metal housing is directed primarily downwardly through an open bottom end of the housing, an internal reflector disk is positioned around the stem area of the light source above the major light emitting portion of the light source and is held in position by spring clips which permit the disk to be held at varied positions within the housing.