Abstract: The invention is directed to a method for illuminating an object and projecting its image on a ground glass screen. Optical comparators conventionally use incandescent illumination, either mercury arc or halogen. The use of an array of high intensity LED devices, provides many options for packaging the required optical components used in comparators.

Abstract: An in-vehicle illuminating device capable of preventing light emitted from a light source from coming directly into a passenger's sight. An in-vehicle illuminating device 1 includes a housing 2, a reflective member 18 provided within the housing 2, a light source or LEDs 10 orienting a light axis of light emitted therefrom to the reflective member 18. Reflected light obtained by allowing the reflective member 18 to reflect the light emitted from the LEDs 40 is irradiated to the outside of the housing 2, thus preventing light emitted from the LEDs 40 from coming directly into a passenger's sight.

Abstract: An optical unit is provided with an integral light condensing section and a light transmitting section. The light condensing section is in a shape of a parabolic body of rotation substantially widening from a proximal end toward a distal end with a concave section opening at a proximal end face to accommodate a light emitting element, a side circumferential face to reflect the light from the light emitting element inward and a distal end face to introduce the light from the light emitting element into the light transmitting section. The light transmitting section is a substantially cylindrical shape of a smaller diameter than the light condensing section, and comprises a proximal end face to introduce the light from the light condensing section, a side circumferential face to reflect the light introduced from the proximal end face inward and a distal end face to emit the light.

Abstract: A luminaire reflector of the type that is dome-shaped and includes a flange at the bottom provides a modified a flange that alters the pattern or other effect of light trapped in the wall of the reflector and exiting through the flange. When the bottom surface of the flange is angled with respect to the horizontal, the light exiting the flange is spread and lifted. In accordance with another embodiment, the flange is provided with a colored layer to provide decorative effects to the light exiting the flange.

Abstract: A system and a method for using ePaper as a light control media in lighting fixtures or other light enhanced applications to modify, dim or color-shift the light used for lighting the space. One system includes a light source, an ePaper reflector with controllable reflectivity for controlling the light reflected from the reflector and/or an ePaper baffle with controllable translucency for controlling the light through the baffle. The light incident on the ePaper media may include light from other sources such as natural light. One method compares desired lighting in a space to characteristics of the light source. Characteristics of the ePaper media are then adjusted to provide the desired amount of light to the objects under illumination. Reflectivity from walls and furniture may be controlled by applying ePaper to their surfaces. The light source and the ePaper media may be controlled simultaneously to control the lighting.

Abstract: A light source for vehicles can include a base having a cavity formed on its upper surface, an LED chip mounted in the cavity of the base, a resin portion for sealing the LED chip in the cavity, an optical member disposed above the base and apart from the LED chip, a light shielding portion disposed on the inner surface of the optical member and which forms a cutoff suited for a light distribution pattern, and a fluorescent substance layer disposed at least in regions other than the light shielding portion on the inner surface of the optical member.

Abstract: A light source assembly provides an illumination beam and the light converging element is disposed on a transmission path of the illumination beam. A light converging element has a top end and a bottom end opposite to the top end. The light converging element is gradually reduced from the bottom end to the top end. The top end is opposite to the light source assembly and has a cavity. The illumination beam is incident into the light converging element from the cavity and exits the light converging element from the bottom end.

Abstract: Light emitting assemblies include a light emitting panel member having at least one light input surface for receiving light from at least one light source and a pattern of deformities that vary on or in at least one surface to cause light to be emitted from the panel member. At least a portion of the light input surface may have faceted reflective or refractive surfaces or a lens array in close proximity to each light source for maximizing or otherwise changing the light emitted from each light source.

Abstract: A solid-state illuminating apparatus (10) includes a first light reflector (11), a second light reflector (12), an annular light permeable cover (15) and a light source (13). The first light reflector has a bottom wall (111) and a peripheral sidewall (112) extending from and surrounding the bottom wall. The first light reflector has a reflective surface (113) formed on an inner surface thereof. The second light reflector has a reflective surface (121) facing toward the bottom wall. The light permeable cover is interconnected between a periphery of the sidewall and a periphery of the second light reflector. The first light reflector, the light permeable cover and the second light reflector cooperatively form a chamber (114). The chamber tapers along a direction from the second light reflector to the bottom wall. The light source is received in the chamber and located on the bottom wall.

Abstract: A lamp unit is provided. The lamp unit includes a light emitting element disposed on an optical axis so as to face in a direction substantially orthogonal to the optical axis, a first reflector facing the light emitting element to forwardly reflect light from the light emitting element, and a direct light control member disposed in front of the light emitting element for controlling direct light directed toward a region in front of the first reflector from the light emitting element without being incident on the first reflector. The direct light control member includes a first lens portion which deflects a first portion of the direct light in a direction approaching the optical axis, and an extended portion extending from the first lens portion. The extended portion controls a second portion of the direct light differently from the first lens portion.

Abstract: A projector lamp unit includes: a lamp; a lamp case, housing the lamp; a wire protective member, attached to the lamp case, and comprised from resin having a smaller thermal conductivity than the lamp case; and a resin-covering wire, led from the lamp to the outside of the lamp case through a hole provided with the wire protective member.

Abstract: An improved lampshade of an LED lamp, assembled onto the port of hold tank on the main body of LED lamp so that light-reflection modules located between port of hold tank and LED modules in the hold tank are positioned securely. The lampshade has a circumferential locating surface and a limitation surface. The circumferential locating surface is adapted with the wall edge of hold tank to define an inner edge and an external edge. The limitation surface is recessed into the circumferential locating. A snapping portion is placed at the coupling portion of the circumferential locating surface and wall edge of the hold tank for positioning of the lampshade.

Abstract: A light distribution controller for discharge lamps having improved lamp efficiency while maintaining a specific lighting posture. The controller includes a lighting source (1) in which electric discharge is caused between opposed electrodes (2, 4) to radiate light, a reflecting mirror (5) for reflecting a flux of light radiated from the light source (1) to control the light flux angle, and travel path changing mirror (7) for changing the travel path of the flux of light whose divergence is controlled by the reflecting mirror (5). The light source (1) is arranged such that the axial line connecting the electrodes (2, 4) of the light source (1) or a reference line used for another posture specification is substantially aligned with the center line of the flux of light controlled by the reflecting mirror (5). The path changing mirror (7) can change the direction in which the controlled flux of light travels to a desired direction with respect to the center line of the controlled flux of light.

Abstract: A light delivery technique includes optical configurations as well as the associated methods that generate a ring beam from a linear light source. In one embodiment, a remote light source module delivers illumination light to a fundus camera and/or slit lamp. In another embodiment, an arrangement combines the use of a light pipe homogenizer and a ring beam transformer for efficiently collecting light from a substantially axially linear light source, homogenizing the collected light that lacks low angle flux relative to the optical axis, and transforming the light into a ring beam with a substantially improved low angle flux distribution. In still another embodiment, light emitted from a substantially axially linear light source is directly collected by a curved surface mirror and spatially filtered into a ring beam.

Abstract: A shatter glass guard and venting effect design for a fixture of a luminaire adapted to provide adequate shatter guard protection for the purpose of preventing glass from a broken lamp from being released from the fixture. An annular ring of perforated material is attached to an open end of a reflector. A lens is attached to the outside surface of the annular ring and is dimensioned to expose a portion of the perforated material to allow for venting of heat from within the fixture. The lens and lamp can be installed or removed from the fixture after installation without access from the top of the light housing. The lens when mounted becomes integral with the reflector and moves with the reflector should the reflector need to be adjusted or tilted for aiming. The lens and annular ring combination provides adequate shatter guard protection and venting of the fixture.

Abstract: An optical device for collecting and distributing light from a quasi point light source which includes a planar light guide having surfaces through which optical axes are periodically spaced. There is at least one quasi point light source, the optical axis of each being coincident with the optical axes of the surfaces. There is also at least one optical element depressed within the edges or adjacent surfaces of the light guide at least partially rotated about the optical axis, and having a focal point at the quasi point light source.

Abstract: A lighting device with a light source followed by an optical apparatus in an emission direction, and a primary optics element with a light inlet and a light outlet being arranged between the light source and the optical apparatus. The primary optics element is designed such that desired characteristics of the light beam are formed within the primary optics element by deliberate reflections on specially shaped reflective surfaces of the primary optics element.

Abstract: An LED light source is formed of an LED and an angle control lens. The angle control lens includes a transparent member in a shape of a rotational symmetry, and includes a center convex curved surface area (light-emission area) A1, a peripheral curved surface area (light-emission area) B1, a peripheral curved surface reflection area C1, a center concave curved surface area (light-incidence area) D, and a convex curved surface area E formed between the areas A1, B1. The convex curved surface area E is formed in a position for receiving direct incoming light from the LED (direct incoming light deviated from the center portion), and is optically constructed to anteriorly emit this received light (in a direction intended to be emitted as a result of a light-emission angle being controlled).

Abstract: A headlight for a motor vehicle designed to fulfill several functions, in particular a dual functions. One of the functions is a beam with cut-off, wherein the headlight comprises a light source, a main elliptical reflector having a scalloped part and an optical axis; a main lens disposed in front of the main elliptical reflector; a retractable shield movable between at least one active position for the cut-off beam and a retracted position for another type of beam; a secondary elliptical reflector coupled to the scalloped part of the main elliptical reflector and having a optical axis inclined with respect to that of the main reflector; and an additional lens disposed in front of the secondary elliptical reflector having an optical axis essentially parallel to that of the main lens.

Abstract: A light source comprises a lamp such as an ultra-high pressure mercury lamp or a metal halide lamp and its irradiated light is emitted after being parallelized by a parabolic reflector. The parabolic reflector is made by pressing metal such as stainless and its light exit side aperture is covered with a transparent plate made of glass, etc. The transparent plate prevents fragments of glass of the lamp and the like from scattering when the lamp bursts. The parabolic reflector does not have an aperture (cut-out) for ventilation, but heat radiation fins are formed on the outer surface of it.

Abstract: A light collective optical system includes a single optical member having a first reflecting surface and a second reflecting surface. In this case, the first reflecting surface partly has a first transmissive-refractive surface and the second reflecting surface partly has a second transmissive-refractive surface. The first transmissive-refractive surface and the second transmissive-refractive surface are nearly coaxially arranged. Whereby, it is possible to provide the light collective optical system which is capable of illuminating an object to be illuminated with high illuminance and is compact and a light source device using the light collective optical system.

Abstract: An optical scanner having a scanner glass with a bottom surface includes an LED illumination source and a reflector, disposed below the glass. The illumination source has a target-oriented surface oriented to direct light toward the glass at a non-perpendicular angle. The reflector is oriented to direct light reflected off of the bottom surface toward the target-oriented surface.

Abstract: A light fixture for fixing to a building or building surface has a trough-shaped reflector having first and second side walls forming a light outlet and a reflective inner surface, each of the side walls having a planar section. A diffuser is mounted on the outlet. A plurality of LED's of different colors on the planar sections are positioned such that a predominant portion of the light emitted by the LED's on one of the side walls only reaches the diffuser element after reflection off the other side wall.

Abstract: High power white light LEDs are distributed within a thin reflective cavity. The cavity depth may be less than 3 cm and, in one embodiment, is about 1 cm. A light output surface of the cavity is a flat reflector with many small openings. A small plastic lens is positioned over each opening for causing the light emitted from each opening to form a cone of light between approximately 50-75 degrees. Alternatively, each hole may be shaped to be a truncated cone to control the dispersion. The light emitted by the LEDs is mixed in the cavity by reflecting off all six reflective walls of the cavity. The light will ultimately escape through the many holes, forming a relatively uniform pattern of light on a surface to be illuminated by the luminaire.

Abstract: A headlamp includes a light source, a first auxiliary reflector disposed below a reflector, and a plurality of second auxiliary reflectors disposed on a front side of the first auxiliary reflector at a predetermined interval along a vertical direction. The light source is a line light source extending in a width direction of a vehicle. A sectional shape of a reflecting surface of the first auxiliary reflector taken along a vertical plane that is parallel to the optical axis is a shape of a parabola having an axis line downwardly extending in the forward direction at a predetermined downward inclination angle. A sectional shape of a reflecting surface of each of the second auxiliary reflectors taken along the vertical plane has a shape of a substantially straight line downwardly extending in the forward direction at a downward inclination angle which is smaller than the predetermined downward inclination angle.

Abstract: A direct type backlight module includes a frame, at least an optical sheet, and at least a light guide source. The frame includes a plurality of peripheral sidewalls, at least one holding portion defined in a top of the sidewalls, and an elastic member defined in the holding portion. The optical sheet having a positioning hole corresponding to the elastic member is fixed in the frame by the elastic member being mounted into the positioning hole thereby pushing an inner surface of the positioning hole towards an outer area of the optical sheet. The light source is disposed under the optical sheet. The optical sheet may be fixed on the frame tightly, and may avoid being deformed effectively due to a stretching force produced by the elastic member.

Abstract: A lamp strip assembly including a lamp and an elongate reflector, forming a lamp set, mounted in an elongate housing, the elongate reflector including a curved reflective portion at one end thereof and the lamp being distanced axially away from that end, wherein the curved reflective portion is adapted to reflect light rays from the lamp through a light transmissive element of the elongate housing.

Abstract: An adjustable lamp includes a lamp and a scattering shade which is slidable on the lamp. The scattering shade has a front end coupled with a reflective blade which is bent at a selected angle to reflect light. By sliding the scattering shade on a light penetrative shade, the position of the reflective blade can be changed to alter the reflective direction of the light.

Abstract: A light diffusion device permits a single light source to serve as both direct lighting and fill lighting for a photographic, theatrical or cinematographic subject. The light diffusion device partially reflects light emitted from a light source away from the subject, using a translucent panel. Additional translucent panels permit the reflected light to escape from the light diffusion device into the surrounding environment. The escaped light reflects from the surrounding environment, thereby creating fill light around the subject, thus reducing or eliminating undesirable shadowing.

Abstract: The present invention relates to improvements in controlling the direction of light rays and apparatus incorporating the improvements.

Abstract: A vehicle light emitting device including a light emitting element, a primary reflector, and a secondary reflector. A reflecting surface of the primary reflector has a shape of a substantially dome-shaped body of revolution formed by rotating about the optical axis Ax an ellipse E which has a primary focal point F1 which is a point near the light emitting element and a secondary focal point F2 which is a point near the reflecting surface. The primary reflector includes a belt-shaped region, which straddles a ring-shaped locus of the secondary focal point F2 and is configured as a light translucent portion, whereby reflected light from the primary reflector is caused to temporarily converge on the secondary focal point F2 in each cross-section of the body of revolution including the optical axis Ax and is thereafter caused to be incident on the secondary reflector as a diffused light.

Abstract: A light guiding unit is provided which can reflect light from one light source such that a plurality of irradiated lights can be intermittently viewed, while allowing substantially all portions of the plurality of irradiated lights to be substantially uniform. The light guiding unit can include an input portion where light from a light source is input, a first reflecting portion that has reflecting surfaces which divide light from the input portion into a plurality of directions (e.g., six directions), and then radially reflects the light. A second reflecting portion can be provided that has reflecting surfaces which reflect light from each of the reflecting surfaces of the first reflecting portion along the principal optical axis. An irradiation portion can be provided that has irradiation surfaces which irradiate light from each of the reflecting surfaces of the second reflecting portion.

Abstract: A lighting device with a light source followed by an optical apparatus in an emission direction, and a primary optics element with a light inlet and a light outlet being arranged between the light source and the optical apparatus. The primary optics element is designed such that desired characteristics of the light beam are formed within the primary optics element by deliberate reflections on specially shaped reflective surfaces of the primary optics element.

Abstract: A luminaire (1) is disclosed, comprising a main reflector (3) with a light emission window (5), and comprising a counter reflector (7) positioned opposite to the main reflector. Means (9) for accommodating at least one electric lamp (11) are provided in the luminaire in between the main reflector and the counter reflector. The counter reflector is provided with a light-transmitting cover (13), acting as an optical waveguide and positioned at a side (15) of the counter reflector facing away from the means (9). The cover is provided with diffusor bodies (21) which scatter the light coupled into the cover and transmitted through the bulk of the cover. Thus a desired distribution and appearance of the optical brightness of the cover is obtained.

Abstract: An illuminated ear protector, comprising a pair of ear covers, each ear cover comprising a translucent rigid shell having an open end and a closed end, a circuit board attached within the rigid shell comprising at least one battery connector thereon, at least one and preferably two light emitting diode lights electrically connected to the circuit board, a switch connected to the circuit board controlling the at least one light emitting diode light, a first reflector located at the open end and oriented such that substantially all light from the at least one light emitting diode light is directed towards the closed end, a plate attached to the open end which supports the reflector, a peripheral sealing ring for contacting one of the ears and cushioning the ear cover there against which is attached to an opposite side of the plate from the reflector, and a headband attached to each of the ear covers which extends over the head of the user and secures each of the ear covers over one of the ears of the user.

Abstract: Light emitting assemblies include a light emitting panel member having at least one light source positioned, embedded, potted, bonded or otherwise mounted in a shaped slot, cavity, recess, opening or hole in the panel member. Deformities on at least one surface of the panel member may vary to cause light to be emitted from the panel member. At least one angled, faceted or curved reflective or refractive surface in close proximity to the light source redirects some of the light to fit a particular application.

Abstract: A vehicular lamp that decreases the amount of light blocked by the extension towards the inside of the vehicle and increases the diffused light radiated toward the outside of the vehicle. The vehicular lamp 100 has a projection lens 33, a light source 27, a reflector 29 having a reflecting surface 29a in which the light source 27 acts as an approximate focal point and light from this light source 27 is reflected toward the projection lens 33, a container-shaped body 21, and a cover 23 that along with the body 21 forms a light chamber. The cover 23 has a horizontal cross-section that is slanted with respect to an imaginary line 25 in the transverse direction of the vehicle, and the projection lens 33 has a rear side focal point f, the thickness of the lens 33 decreasing from the center portion toward the outer peripheral portions, and on the outer peripheral portions, a vehicular inside edge portion projects more toward the front side of the vehicle than the vehicular outside edge portion.

Abstract: The invention is a side-emitting illumination system that incorporates a light emitting diode. The side-emitting illumination system recycles a portion of the light internally generated by a light emitting diode back to the light emitting diode as externally incident light. The light emitting diode reflects the recycled light, thereby increasing the effective brightness of the light emitting diode. The light reflected by the light emitting diode is directed though the output aperture of the side-emitting illumination system, thereby increasing the output brightness and efficiency of the side-emitting illumination system. The light emitting diode reflects externally incident light with a reflectivity greater than 40 percent.

Abstract: The invention relates to a road illumination system for forming a low beam in traffic applications comprising a light source and a reflecting surface formed by a multiplicity of reflector segments arranged around a central optical axis. According to the invention, the light source emits light over an angle of at most 180° in a direction facing away from the intersection of the central optical axis and the reflecting surface and the reflector segments are parabolically-shaped and have a segment optical axis parallel to the central optical axis, while the reflector segments are positioned such that the segment optical axis substantially intersects with an edge of the light source. Preferably, the illumination system is provided on poles (5, 5?, . . . ) or on a crash barrier adjacent the traffic lanes 1. Alternatively, the illumination system is a vehicle headlamp. Preferably, the light source (13) is a (white) lightemitting diode.

Abstract: A light emitting device includes a mark body, a substrate arranged in back of the mark body, an LED mounted on an opposite surface of the substrate to the mark body, and a light guide arranged on a closer side of the substrate to the LED and having an upper surface serving as a light introducing surface for introducing LED-based light, a side surface serving as a light emitting surface and a backside subjected to a light diffuse reflection process to cause diffuse reflection by the backside. Incidentally, there can be provided a light emitting device that includes a light guide arranged on a closer side of the substrate to the LED and having an upper surface serving as a light introducing surface for introducing LED-based light, a side surface serving as a light emitting surface and a backside having a plurality of protrusions in a rib form.

Abstract: A light source for vehicles can include a base having a cavity formed on its upper surface, an LED chip mounted in the cavity of the base, a resin portion for sealing the LED chip in the cavity, an optical member disposed above the base and apart from the LED chip, a light shielding portion disposed on the inner surface of the optical member and which forms a cutoff suited for a light distribution pattern, and a fluorescent substance layer disposed at least in regions other than the light shielding portion on the inner surface of the optical member.

Abstract: An LED is mounted on a circuit substrate, the LED is encapsulated by a transparent resin layer. A reflection layer is provided on the resin layer for reflecting and transmitting lights emitted from the LED.

Abstract: A luminaire with reflector of negative focal length is disclosed, which comprises a light source and a luminaire screen having a reflector of negative focal length, a side screen and a plate; wherein the reflector of negative focal length is capable of reflecting the upward-incident rays emitted from the light source; and the side screen is capable of reflecting the sideward-incident rays emitted from the light source and the reflected rays of the reflector; and the plate being disposed at the lower portion of the luminaire screen beneath the light source has a plurality of micro-structures arranged thereon and is capable of accepting the rays of the downward incident area along with both the reflected rays of the reflector and the side screen so as to diffuse the same for discharging.

Abstract: A vehicle illumination lamp having a light-emitting element including an optical axis, a first reflection surface, a second reflection surface, and a third reflection surface. The third reflecting surface is formed on a plane intersecting the optical axis in such a manner as to include a first focal point and a second focal point of the first reflecting surface.

Abstract: A fluorescent structure is provided on a curved recess plane of a reflector. The fluorescent structure has a shape of a cylinder which is cut by a plane including its central axis and along its longitudinal direction. An inner wall of the fluorescent structure tapers in like a cone from both ends to the central portion of the fluorescent structure. The structure includes a fluorescent material, for example YAG, which converts blue light to white light and diffuses the white light. Blue LEDs are provided close to both ends of the structure. The blue LEDs are positioned such that blue light emitted from the blue LED enters from both ends and is led to the central portion.

Abstract: A vehicle lighting system for a vehicle includes an accessory module assembly that is adapted for attachment to an interior portion of a vehicle and configured to illuminate, for example, an area inside the vehicle. The module assembly includes a single high-intensity power light emitting diode that has a luminous efficiency of at least about 1 lumen per watt when the light emitting diode is operated and is preferably operated at a forward current of at least 100 milliamps. The system also includes a voltage conversion element for converting the battery/ignition voltage of the vehicle to the forward operating voltage of the light emitting diode.

Abstract: A light source device includes: a light-emitting tube having a light-emitting portion that generates a light beam by an electric discharge between electrodes and a sealing portion provided on both sides of the light-emitting portion; an ellipsoidal reflector having a substantially ellipsoidal reflecting surface and irradiating the light beam irradiated by the light-emitting tube after converging at a predetermined position; a sub-reflection mirror having a reflecting surface opposed to the reflecting surface of the ellipsoidal reflector and covering the front side of the light-emitting tube in the light-irradiation direction to reflect the light beam emitted by the light-emitting tube toward the ellipsoidal reflector; and a transparent member provided in front of the ellipsoidal reflector in the light-irradiation direction to transmit the light beam.

Abstract: The lighting device comprises a light source and an associated hollow reflector of transparent material having an internal surface and an external surface which are close to and far away from the source respectively. The inner surface of the reflector has in cross section at least one transverse plane passing through the source a discontinuous profile forming a plurality of adjacent steps each of which has a first face through which rays originating from the source can pass and a second face essentially parallel to the rays originating from the source. The outer surface of the reflector has a profile comprising one or more arcs of curves.

Abstract: A light source with an integral surface of revolution to project an emergency warning light signal for a vehicle in a substantially horizontal 360° arc. A centrally positioned mirror assembly has a plurality of light sources spaced about the mirror assembly.

Abstract: The improved bollard luminaire has an upwardly directed, elliptical main reflector and a lamp “nested” within such reflector and positioned at or near its lower focal point. An upper cone-shaped reflector receives light from the main reflector and directs it laterally through a transparent lens element. Such element provides a 360° lateral light opening unobstructed by wiring, support posts or the like. Light reflected through such opening is relatively sharply focused along an axis about 70° from vertical. Unreflected light from the lamp which “misses” both reflectors also provides a degree of “uplighting,” often found useful for aesthetic purposes.