Abstract: A lamp unit has a semiconductor light emitting chip 24a and a translucent member 22 which subjects light emitted from the chip 24a to be reflected by front surface 22a and then by rear surface 22b to exit from the front surface 22a. Chip 24a is arranged to face forward such that a lower end thereof crosses an optical axis Ax of the lamp unit 20 at right angles. The front surface 22a of the translucent member 22 is formed from a plane orthogonal to the optical axis Ax, and an optical axis region 22a1 of the front surface is subjected to mirror surface treatment. A rear surface 22b of the translucent member 22 is formed using a paraboloid of rotation whose focal point is a position having symmetry with an illumination center of the chip 24a. The rear surface is subjected to mirror surface treatment.

Abstract: A substantially bell-shaped light fixture component for use with a lighting fixture, the light fixture component having upper and lower openings and curved or undulating segments on the light fixture component body that diffuse light from the light source used in connection with the light fixture component. The outer surface of the light fixture component body also has a plurality of curvilinear prisms for reflecting light by internal prismatic reflection. The inner and outer surfaces of the light fixture component create an even distribution of light that emanates from the light fixture component in use.

Abstract: A lamp, in particular a motor vehicle lamp, comprises a light distribution device (14, 14?) into which the light of at least one light source (6) is fed in such a way as to produce a light flux which is firstly propagated through the light distribution device substantially parallel to a light exit surface defined thereby. Components are deflected out of the light flux by means of coupling-out structures (16, 16?) for delivery through the light exit surface.

Abstract: A light emitting device that is capable of changing the illumination angle in the transverse direction while efficiently utilizing energy from a light source. An emission unit includes at least an arc tube. A pair of reflecting means are arranged in a longitudinal direction of the arc tube so as to reflect luminous fluxes emitted from the arc tube in a direction which varies according to the distance between the emission unit and each of the reflecting means.

Abstract: This specification discloses an illuminating apparatus having a light source and an optical unit disposed forwardly on the object side of the light source, the optical unit being provided with an incidence surface on which light from the light source is incident, a light emergence surface provided with a Fresnel lens, and a side reflecting surface for totally reflecting the light incident on the incidence surface toward the Fresnel lens, wherein the light totally reflected by the side reflecting surface is refracted by the Fresnel lens and efficiently irradiates the object.

Abstract: The invention proposes an indicator lamp comprising an optical axis oriented from the rear to the front, on which there is a light source which is provided for emitting a light flux towards the front, and of the type comprising an optical device for recovering and distributing the rays of light emitted by the source, with a view to providing an indicating faction that meets the regulations, wherein the optical device comprises a coaxial annular reflector and, in front of the light source a central optical part known as the light engine which is provided for distributing the rays of light emitted by the source in directions that are generally transverse about the optical axis, towards the coaxial annular reflector that is provided for distributing the rays of light axially towards the front.

Abstract: There is proposed a luminaire (10) with which the exit angle of the light beams is restricted for the purpose of anti-dazzling. Further, in accordance with the invention there is attained in a simple manner and in particular without the employment of a light guide element a uniform emission of light over the entire surface of an optical element (14; 14-1, 14-2) arranged before or in the emission opening (13) of the luminaire (10). The optical element (14; 14-1, 14-2) has a plate-like core (16) of transparent material, which is occupied on one side with microprisms (17) which, with the formation of furrows (18)—starting from their roots—taper.

Abstract: A light emitting apparatus includes a light source, a light transformer, a hemispherical optical window, a circuit and a base. The light transformer includes a truncated hollow conical reflector, a curved reflective surface, and an optical element. The conical reflector has a truncated end facing the light source and a cone base opposite the truncated end. The conical reflector axis is coincident with a light source axis, and light passes through an opening on the truncated end. The curved reflective surface is between the truncated end and the cone base. The surface reflects light from the light source in a limited angle omnidirectional pattern with precalculated intensity distribution. The optical element is adjacent the cone base in a plane perpendicular to the conical reflector axis, and disperses the light passing through the truncated hollow cone reflector.

Abstract: A direct-lighting type back light unit includes a plurality of light sources for emitting light outward; a reflecting plate defining a plurality of curved reflecting recesses in which the light sources are respectively arranged. Each recess forms a first convex reflecting surface at a center of the recess, a second inclined reflecting surface formed at an edge of the recess and a third inclined reflecting surface formed at the edge and extending from the second reflecting surface.

Abstract: A dynamic light sculpture system and method of use are provided. The system includes an optical element that is coated with an optically active material. The optical element may be arranged by the user/artist proximate a viewing screen. A beam of light is directed obliquely at the optical element to produce both transmitted and reflected secondary beams in a myriad of colors.

Abstract: A light module includes a light source and a reflective light transformer. The light source emits light with a limited angle omnidirectionally in a plane perpendicular to a light source optical axis. The reflective light transformer is located around the light source, and collects most of the light emitted by the light source and redirects and redistributes the collected light in a direction parallel to the light source optical axis. The light transformer includes a reflective surface with a precalculated arbitrary profile that transforms a light source spatial light distribution into a specific pattern with a generally different angular spread in a horizontal plane and a vertical plane.

Abstract: A lighting equipment comprising a reflector having a substrate comprised of a thermoplastic resin containing an alicyclic structure on which is formed a reflecting layer having a reflectance of at least 70%. The reflecting layer of the reflector is preferably comprised of a metal. The reflecting layer preferably has a thickness of 5 to 10,000 nm. The amount of the repeating units containing polar groups in the thermoplastic resin containing an alicyclic structure is preferably not more than 50 wt %. The thermoplastic resin containing an alicyclic structure preferably has a melt flow rate of 4 to 100 g/10 min.

Abstract: A front light module includes a light guide plate having opposite ends and a front surface and an opposite back surface connected to each other by the ends. The front surface forms sets of raised ridges, each raised ridge having opposite inclined faces. The front surface also forms a recessed trough between adjacent sets of ridges. Each trough has opposite inclined faces. A light source is mounted to each end of the light guide plate for projecting a light into the light guide plate. A reflector is arranged adjacent to and spaced from the back surface of the light guide plate for accommodating a display board between the reflector and the light guide plate. The light from the light source is incident onto the inclined faces of the troughs and reflected thereby toward the reflector. The troughs have different depths whereby the inclined faces thereof are of different surface areas for reflecting different amount of light in order to provide a uniform brightness over the whole module.

Abstract: An anti-dazzling transparent screen for elongate illuminant bodies which covers the illuminant body over the length thereof for the purpose of anti-dazzling of a radiating sector of the illuminant body, has a surface formed by elongate prisms extending approximately parallel to one another and aligned substantially along the illuminant body. The prisms are positioned relative to the illuminant body such that on at least one of the prism surfaces a total reflection of the light beams, having entered the respective prism and impinging on this prism surface, occurs.

Abstract: The present invention relates to a lighting and indicating device for a motor vehicle, including at least one main light source, associated with a reflector in order to emit a light beam of predetermined photometry along an optical axis through glazing. According to the present invention, the lighting or indicating device includes at least one second light source situated off the optical axis, and reflecting means for reflecting the light rays emitted by the second light source along a direction substantially parallel to the optical axis.

Abstract: A linear light source device for image reading. The main body of the linear light source device includes at least a light-guide bar and a light source assembly. The light-guide bar is a polygonal column with one surface having stripes thereon, acting as a reflective plane with a reflective function. The opposite plane to the reflective plane is a light-exiting plane, and all the remaining planes are reflective layers. At least one of the ends of the polygonal column is an incident plane for a light beam to enter. Light is transmitted through both of the two ends of the polygonal column (or one end with the other end acting as a reflective plane) and uniformly transmits through the light-exiting plane. The light-guided bar has a simple structure and configuration, a compact volume, a high rate of utilization in light energy, is flexibly changed in length, and is easy to manufacture with high product yield and low manufacturing cost.

Abstract: A light source for a flat panel display or a luminare includes a tubular enclosure having a linear slit in which is positioned a lens structure which may be a cylindrical rod lens or a plurality of ball lenses. The lens, whether a rod or ball structure, has an opaque white reflective strip or coating facing inward of the tubular enclosure, thereby defining two narrow slit openings through which the light can be projected into the lens structure and into an associated waveguide.

Abstract: A position light (200) for use on an aircraft. The aircraft position light uses light sources (302) installed into an alignment fixture (304) which optionally carries away heat generated by the light sources. Light emitted by the light sources is directed into a first prism (308), which distributes and directs the light. A second prism (324) is used to further shape the pattern of the light. A lens (206) is installed over the position light (200) to protect it from the elements.

Abstract: The present invention relates to a LED spotlight (type III), which includes a lampshell and a light-collecting cover, wherein the cover has its bottom provided with an aperture to engage with a LED. The light-collecting cover is capable of reflecting and concentrating the light emitted from the LED to a same direction that provides an efficient spotlight. An IC board, which is a DC-DC transformed, is provided under the LED for providing a suitable input current.

Abstract: The present invention relates to a high-performance image-forming optical system made compact and thin by folding an optical path using reflecting surfaces arranged to minimize the number of reflections. A prism member 10 has a first entrance surface 11, first to fourth reflecting surfaces 12 to 15, and a first exit surface 16. An optical path incident on the first reflecting surface 12 and an optical path reflected from the second reflecting surface 13 form intersecting optical paths. An optical path incident on the third reflecting surface 14 and an optical path reflected from the fourth reflecting surface 15 form intersecting optical paths. At least either one of the first reflecting surface 12 and the second reflecting surface 13 and at least either one of the third reflecting surface 14 and the fourth reflecting surface 15 have a rotationally asymmetric curved surface configuration that gives a power to a light beam and corrects aberrations due to decentration.

Abstract: A small light source unit of simple structure that emits light forward with high efficiency is well-suited as a backlight in a liquid crystal display device. The light director in this unit has reflective internal faces adjacent opposite peripheral regions of the entrance face and two refractive index interfaces in it. The reflective internal faces and the refractive index interfaces are oriented on inclined planes. The refractive index of a middle region between the two interfaces is the smallest among those of the three regions making up the light director.

Abstract: A mixing chamber includes a first surface and a second surface opposite the first surface. At least two light emitting diodes are disposed along the first surface. At least a portion of the first surface is reflective, and the second surface includes a reflective region and a plurality of openings formed in the reflective region. In some embodiments, the first surface and the second surface are separated by at least one side surface. Light emitted from the light emitting diodes is reflected off the first surface, reflective region of the second surface, and side surfaces of the mixing chamber until it is emitted from the openings of the second surface. In another embodiment, a structure includes a light emitting diode, a lens overlying the light emitting diode, and a diverting optic overlying the lens. The diverting optic may include, for example, a specular or diffuse reflector, a bulk or film diffuser, and a transparent material.

Abstract: A composite lighting device is provided, which is inexpensive and has high uniformity in brightness, in which light emitted from an end face of a backlight having an organic EL device is used to illuminate input buttons and the like. The lighting device includes a transparent substrate having one principal plane on which a transparent electrode film, a luminescent layer, and a reflective electrode film are at least formed. In the lighting device, a liquid crystal display unit is adjacently disposed on the other principal plane, and a light-guide element is adjacent to an end face of the substrate, so that input buttons embedded into the light-guide element are illuminated.

Abstract: An optical lens having a body with a front face and a rear cavity for cooperatively receiving and optically aligning a high power light emitting diode source with respect to a primary central optical axis of the lens. Reflective inner side walls of the body project light in a lambertion pattern from the front face at an angle to create a central hot spot. The body includes at least one side flange which is cooperatively received in a guide of a lens holder and further includes a non-optical annular rim extending from the front face for cooperatively seating with the lens holder.

Abstract: A vehicular lamp which radiates a light by indirect illumination using a plurality of LED light sources which has a thin structure while providing sufficient light output to the front of the lamp, even in the case where the lamp is mounted in a wrap-around portion of the vehicle body. Respective Fresnel lenses which form light from respective LED light sources into parallel light fluxes are arranged so as to align the directions of the parallel light fluxes upward, and the parallel light fluxes are then reflected toward the front of the lamp by a reflector. The reflector is separated into sub-reflectors for every area which the parallel light fluxes from the respective Fresnel lenses strike, and the sub-reflectors are arranged in a stepped configuration extending in a lateral direction of the reflector from the front of the lamp toward the rear of the lamp.

Abstract: A highly efficient LED lamp includes an optical module and a housing. The optical module has at least one light emitting diode (LED) that emits light with a wide divergence, a non-imaging optical (NIO) element and a transparent window. The NIO element includes a refractive member located around a LED optical axis and a total internal reflection member located around the refractive member. The refractive member and the total internal reflection member are integrated in a single transparent element having a mutual focal point, wherein the NIO element collects a significant amount of light emitted by the LED with wide divergence located at the focal point, to compress the collected light with high efficiency into a beam with a generally different angular spread in a horizontal plane and a vertical plane and to direct the compressed light outside of the lamp.

Abstract: A substantially bell-shaped light fixture component for use with a lighting fixture, the light fixture component having upper and lower openings and curved or undulating segments on the light fixture component body that diffuse light from the light source used in connection with the light fixture component. The outer surface of the light fixture component body also has a plurality of curvilinear prisms for reflecting light by internal prismatic reflection. The inner and outer surfaces of the light fixture component create an even distribution of light that emanates from the light fixture component in use.

Abstract: An illumination device includes a flash discharge tube, an optical prism having a total-reflection surface for totally reflecting at least a part of incident light, light emitted from the flash discharge tube being made incident on the optical prism, and an optical panel, light having exited from the optical prism being made incident on the optical panel, wherein the illumination device varies a state of illumination light by varying a positional relationship between the optical prism and the optical panel.

Abstract: A planar light source unit has a transparent light leading plate and a light source provided opposite to the incidence surface of the lead plate. The light leading plate has a light discharge surface at an upper surface, and a lower plane. A prism is provided in the light leading plate at a position opposite to the light source.

Abstract: An industrial luminaire with a prismatic refractor including an interior surface formed as an open-ended surface of revolution of a plane curve about a rotational axis, the plane curve having a plurality of segments corresponding to segments on a reference curve which, for each segment of the reference curve, the corresponding segment on the plane curve has been incrementally rotated with respect to a reference point on a reference axis for the reference curve.

Abstract: An elevator cab lighting assembly comprising a refractive sheet mounted on the interior of the elevator cab. A light source is mounted at and conducts light into an outer edge of the refractive sheet. The light received at the outer edge of the travels along the refractive sheet and passes out of the planar surface and inner edge of the sheet exposed within the interior of the cab. The refractive sheet may be randomly sanded or sandblasted to provide diffuse light. The sheet may be etched or routed in standard or custom designs to provide accent highlighting. The lighting assembly is housed within a transom assembly that may be accessed from the exterior of the cab.

Abstract: Disclosed are an illumination device capable of improving an optical efficiency of a light generated from a light source and a reflection type liquid crystal device using the illumination device. Between at least one light source and a first light guiding plate, which is provided to uniformly project the light incident from a first side towards a second side, a second light guiding plate for projecting the incident light towards the first side of the first light guiding plate is provided. A distance between a light projecting portion of the second light guiding plate and a light reflecting portion opposite the light projecting portion becomes narrow as an amount of light flux of the light emitted from at least one light source decreases. Accordingly, the light efficiency can be improved by increasing the probability of variation in optical routes for the light generated from each light source, though the number of the light sources disposed at a side of the second light guiding plate is increased.

Abstract: A method and apparatus are disclosed for redistributing light to shift the apparent position of light generation and provide a more uniform area of light emission from a light assembly incorporating a plurality of spaced-apart light sources. Divergent light from each light source is collimated into a beam. Portions of each beam are diverted from the direction of the beam, transmitted laterally and redirected to emerge from the light assembly radially spaced from the position of the light source producing the beam. An internal reflecting lens member molded from optical plastic is disclosed as one apparatus for carrying out the method. The disclosed method and apparatus are particularly applicable to light assemblies incorporating an array of LEDs.

Abstract: Land portions to which the spot-like light source is soldered are provided at the end of the FPC, whereby the light emitting surface of the spot-like light source is aligned to the side of the FPC, that is, the FPC does not protrude from the light emitting surface. The spot-like light source mounted on the FPC is disposed close to the light conductive bar with its light emitting surface facing the end surface of the light conductive bar. Since the FPC does not exist ahead of the light emitting surface, the FPC does not overlap the end portion of the light conductive bar, so that light rays emitted from the light emitting surface do not irradiate the FPC.

Abstract: Prismatic structures having at least certain conventionally linear surfaces thereof configured in a non-linear fashion to control the direction of light exiting said structures, the invention functions to reduce light losses in a luminaire or the like while facilitating the emanation of light from the luminaire at an acceptable viewing angle and with a reduction in glare. Prisms, particularly splitter prisms, configured according to the invention are formed with at least portions of conventionally linear surfaces as arcuate, curvilinear or generally curving segmented surfaces so as to direct light out of the luminaire for useful illumination rather than in a wasteful direction back into the luminaire. Prisms configured according to several embodiments of the invention function to increase light efficiencies either upwardly or downwardly depending on illumination requirements.

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 lens assembly is disclosed for use with various light emitting sources. The lens assembly includes a central section and an outer section. The central section is radially centered on an optical axis. The outer section radially surrounds the central section and is radially centered on the optical axis. The outer section includes an outer wall that has a generally rotated parabolic shape, an inner wall that abuts the central section, and a slanted front surface extending between the inner wall and the outer wall. The front surface is the area of the lens assembly axially farthest away from the light emitting source.

Abstract: An improved optical assembly includes a reflector/refractor device and a reflector collar provided for enhanced directional illumination control. The reflector/refractor has a predefined shape and has a plurality of reflector/refractor prisms on an exterior body surface for reflecting and refracting light. A light source is disposed within the reflector/refractor substantially along a central vertical axis of the reflector/refractor. The reflector collar supports the reflector/refractor and attaches the reflector/refractor to a luminaire ballast. The reflector collar has a predetermined contour and a plurality of reflector impressions formed into the predetermined contour. The predetermined contour and the plurality of reflector impressions provide directional illumination control for the optical assembly.

Abstract: A prism unit has transmitting/totally-reflecting surfaces which cross each other, formed using at least one prism. Light emanating from a light source falls on the prism unit. The light is transmitted or totally reflected from the surfaces according to an angle of incidence at which the light falls on the prism unit. Transmitted light is radiated forwards, while totally-reflected light is directed laterally. A reflecting member is located laterally in order to cover the prism unit, whereby light totally reflected laterally by the prism unit is reflected forwards. In order to constitute the transmitting/totally—reflecting surfaces, a first air layer and a second air layer are formed in the prism unit so to have a substantially uniform width and oppose each other with a plane, which contains a glowing member of the light source and extends forwards, between them.

Abstract: A lens comprises a bottom surface, a reflecting surface, a first refracting surface obliquely angled with respect to a central axis of the lens, and a second refracting surface extending as a smooth curve from the bottom surface to the first refracting surface. Light entering the lens through the bottom surface and directly incident on the reflecting surface is reflected from the reflecting surface to the first refracting surface and refracted by the first refracting surface to exit the lens in a direction substantially perpendicular to the central axis of the lens. Light entering the lens through the bottom surface and directly incident on the second refracting surface is refracted by the second refracting surface to exit the lens in a direction substantially perpendicular to the central axis of the lens. The lens may be advantageously employed with LEDs, for example, to provide side-emitting light-emitting devices. A lens cap attachable to a lens is also provided.

Abstract: A light source for a flat panel display or a luminare includes a tubular enclosure having a linear slit in which is positioned a lens structure which may be a cylindrical rod lens or a plurality of ball lenses. The lens, whether a rod or ball structure, has an opaque white reflective strip or coating facing inward of the tubular enclosure, thereby defining two narrow slit openings through which the light can be projected into the lens structure and into an associated waveguide.

Abstract: A lens comprises a bottom surface, a reflecting surface, a first refracting surface obliquely angled with respect to a central axis of the lens, and a second refracting surface extending as a smooth curve from the bottom surface to the first refracting surface. Light entering the lens through the bottom surface and directly incident on the reflecting surface is reflected from the reflecting surface to the first refracting surface and refracted by the first refracting surface to exit the lens in a direction substantially perpendicular to the central axis of the lens. Light entering the lens through the bottom surface and directly incident on the second refracting surface is refracted by the second refracting surface to exit the lens in a direction substantially perpendicular to the central axis of the lens. The lens may be advantageously employed with LEDs, for example, to provide side-emitting light-emitting devices. A lens cap attachable to a lens is also provided.

Abstract: A lighting device for installation in a substantially plane surface, comprising at least one lamp device that emits light essentially in a light direction which forms an angle with an exit face of a light refracting means in the lamp device. The lamp device comprises a light source that emits light towards an incident face of the light refracting means, where the light refracting means has a longitudinal direction coincident with the light direction, and where the exit face is approximately parallel to the substantially plane surface. The exit face is set a slight angle of inclination relative to the substantially plane surface, the angle and the angle of inclination in combination causing light from the light source to be brought to an emergent angle above the face that satisfies pre-set requirements for light intensity close to the surface.

Abstract: A high output lamp softener includes a base and at least one diffuser extending from the base toward an interior of the base and defining a surface configured to encircle a portion of a circumference of a high output lamp.

Abstract: An improved surface light source device applicable to back lighting of a liquid display. In the surface light source device, a plate-shaped optical block (15) is disposed along an emitting surface of a plate-shaped optical member (11), to which illumination light is to be supplied from a primary light source (3), and has on at least one of its outer and inner sides a directivity modifying surface for modifying directivity of illumination light emitted from the emitting surface. Directivity modifying surface occupies at least part of the whole area of the optical block except a predetermined range (AR2) from a position aligning to the incidence surface of the plate-shaped optical member (11). The optical block (15) and the plate-shaped optical member (11) may be held in a unitary form by a holding mechanism formed integrally with the optical block (15) and/or the plate-shaped optical member (11).

Abstract: An illumination apparatus comprises an elongated waveguide having proximal and distal ends and a central longitudinal axis. The waveguide includes an elongated forward side for outputting light and an elongated rearward side having an elongated reflective surface for reflecting light towards the forward side. A light source such as a solid state light emitter may be situated on the proximal end of the waveguide introduces light into the waveguide in the form of a beam which propagates from the proximal end to the distal end. Light traveling within the waveguide is reflected from the reflective surface along the elongated rearward side towards the forward side for viewing.

Abstract: A highly efficient optical device comprises two opposing active non-spherical optical surfaces defined by a two-dimensional representation that is symmetrically extended to provide a three-dimensional device. A focal area, spaced apart from the optical surface and non-contiguous therewith, is defined by the two opposing active optical surfaces. The active optical surfaces each have a continuous second derivative, and the optical surfaces are defined by a polynomial with an order of at least about twenty. The optical device may comprise a transparent dielectric core, and the optical surfaces may be formed on the core. A receiver may be situated at the focal area to provide a concentrator. An extended light source such as an LED may be situated at the focal area, to provide a collimator. Faceted embodiments can provide a low aspect optical device. In some embodiments a diffuser may be used to transform incident radiation into a predetermined shape.

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 light assembly having a light source and a ring lens radially surrounding the light source for substantially collimating light from the light source. There is a prism ring having at least two prism bands surrounding the ring lens and receiving light from it. One of the prism bands is defined by a plurality of reflecting prisms and another of the prism bands is a refracting band. In another arrangement a multi-prism ring reflector surrounds the ring lens and is arranged to have total internal reflection except for exit faces formed therein which are substantially at right angles to the substantially collimated light from the light source. The ring prism bands may be of the same vertical height or they may have different vertical heights with respect to each other. In a further arrangement a prism ring includes at least two prism bands surrounding the ring lens and receiving light therefrom.

Abstract: A reflector for use with light emitting devices. Multiple reflective surfaces redirect light emission components of the light emitting device, for example a light emitting diode, into a desired direction. The different light emission components including a total internal reflection light emission component. Paired light emitting devices share common reflector surfaces creating an oval light pattern. Holes in the reflector accommodate electrical components and enhance heat dissipation. A deflector pattern on non-reflector surfaces minimizes sun phantom effect when the reflector is used, for example, in a traffic signal.