Abstract: An LED-array light source comprises an LED-array and a light-transmitting member disposed thereon. The light-transmitting member has a pair of opposed major surface for receiving and emitting output light emitted from the LED-array. A plurality of a first reflectors are formed on a light emitting surface of the light-transmitting member so as to partially reflect the output light toward a light-receiving surface of the light-transmitting member. A second light reflector is provided on the light receiving surface of the light-transmitting member so as to rereflect the light reflected from the first reflector to the emitting surface and thereby guiding the output light from the LED-array to an intermediate area between adjacent LEDs. Thus, it is possible to obtain a uniform linear light source with small number of LEDs.

Abstract: A spherical illuminator (10, 40, 50, 60) having an upper diffuser (17, 47, 56, 62) with a concave surface, and having either an opposing reflector (18, 41) or an opposing lower diffuser (57, 63) with a concave surface. The two concave surfaces are placed so that their concavities form a substantially spherical viewing area into which the object under inspection is placed. The upper diffuser (10, 40, 50, 60) has a viewing aperture. It transmits light uniformly to the object from approximately two-pi steradians. The reflector (18, 41) or the lower diffuser (57, 63) provides light to the object in another two-pi steradians, resulting in nearly four-pi steradians of illumination.

Abstract: An emergency strobe light for warning the hearing impaired of emergency situations includes a bulb extending outwardly from a base along an axis. Reflectors extending outwardly from the base direct a high percentage of light output from the bulb along a horizontal plane and a vertical plane which intersect each other along the axis of the bulb. The strobe light draws little power and can be powered by a battery.

Abstract: At least part of a reflector surface covering a rod-shaped light source is a continuous body having such a shape that in a plane perpendicular to the central axis of the rod-shaped light source, a ray emitted from a light emitting point on the surface of the rod-shaped light source in the tangential direction going away from a light conducting plate is reflected back to the vicinity of the light emitting point. According to another aspect, at least part of a reflector surface covering a rod-shaped light source located between the rod-shaped light source and the light conducting plate is part of a parabola whose focus is substantially located on the side face of the light conducting plate in a plane perpendicular to the central axis of the rod-shaped light source.

Abstract: A lighting apparatus comprises a light source (12) and light reflecting surfaces from the source to the surrounding environment. One light reflecting surface (10) distributes light at least partly over a second light reflecting surface (11). The first surface (10) reflects the light rays striking thereon substantially towards regions of the second surface (11) receiving the rays directly from the source with an angle of incidence not greater than 20.degree., preferentially not greater than 12.degree. and most preferentially of 10.degree.. Advantageously, the second surface (11) is of generally semicircular plan with a substantially diametrical edge and exhibits a radial cavity (29) in the form of a triangular pyramid the base of which is directed towards the light source.

Abstract: The system includes a high-intensity light source, a fiber optic conduit for transmitting a light-beam, and colored lenses, which emit red, yellow, and green light on fiber optic lines. Each traffic light has a shutter and control means for opening and closing the shutters in the proper sequence for preset time periods to control red, yellow, and green lights.

Abstract: The present invention relates to a lighting device for lighting the cabin of a motor vehicle, the device comprising an elongate light source disposed inside a housing. According to the invention, the lighting device further comprises: two windows transparent to the light flux emitted by the source, the windows being spaced apart from each other and comprising a top window through which light radiation is emitted in a generally horizontal direction, and a bottom window through which light radiation is emitted generally downwards; a first directional light reflector disposed between two respective first edges of the windows; and a second directional light reflector disposed between the two respective other edges of the windows; the directional light reflectors having shapes that combine to guide the light flux emitted by the source towards the transparent windows.

Abstract: A lighting system for an interior of a building includes a device for collecting and converting sunlight into concentrated light consisting of a stack of fluorescent sheets. The collecting device is optically coupled, preferably by way of an optical joint to a channelling member such as an optical cable, so that the concentrated light passes to the channelling member and is channelled to a light emitting fitting for the interior of the building. The channelling members are formed such that their cross-sectional shape changes from the cross-section of the collecting device to the cross-section of the channelling members with an approximately constant cross-sectional area being maintained throughout the change of cross-sectional shape, whereby the coupling device is an optical joint created by a medium having a refractive index close to that of the collecting device and channelling members.

Abstract: A combination electric torch that utilizes a swivelable headlamp portion (2) that in its first position can project light forward of the body portion (1) of the torch and in its second position can project light onto a warning reflector (7), in which second position the torch may be used as a warning lamp (3). An arm (5) is provided on the body portion (1) of the torch which has a rotatable cover (10) for protecting an auxiliary lamp (11), such as fluorescent tube, from damage. Because the headlamp portion (2) can be swiveled to a safe position adjacent the warning reflector (7) the design comprises a rugged construction less susceptible to damage but can be used in a variety of ways such as that of a warning lamp, conventional flashlight and reading light.

Abstract: An improved task light is comprised of a housing having a center cavity portion, a light passage opening below the center cavity portion, and an edge cavity for supporting a light source that emits light from the housing's edge cavity portion into its center cavity portion. A reflector, at least a portion of which spans the center cavity portion of the housing and which portion has a proximal and distal edge in relation to the light source, lies along a path that curves inwardly of the housing such that, when the reflector is viewed through the housing's light passage opening from the level of a task surface below the task light and from any position to the front of the task light, the luminance of the spanning portion of the reflector from reflected source light is substantially uniform over substantially the entirety of the spanning portion of the reflector.

Abstract: An illumination system having a concave minor for imaging a light source. The illumination system includes a light source, a first concave minor for imaging the light source and a second concave minor for reimaging the imaged light source at another location. The system timber includes a light collecting element passing through the surface of one of the concave mirrors enabling light removal without reimaging the light source outside the radii of curvature of the concave mirrors.

Abstract: A light apparatus is provided for illuminating a subject with "soft light", i.e., diffused light that does not cast a defined shadow. The apparatus includes lamp holder (16), a lamp (14), a reflector (12) for reflecting light from the lamp towards the subject, a diffuser or a baffle (23) located in front of the lamp for preventing light from the lamp from passing directly onto the subject. The reflector has a reflecting surface at least 500 mm in diameter and composed of a plurality of convex light-reflecting elements less than 20 mm in diameter. The light reflecting elements (28) constitute at least 90% (by area) of the reflecting surface.

Abstract: The improved illuminating comprises a spheroidal mirror, a light source, a spherical mirror and a condenser lens. The spheroidal mirror has such a shape that it is deficient of a portion that would otherwise reflect light that illuminates any portions other than the object to be illuminated, and that the light from the light source which is directed toward said missing portion is reflected by the spherical mirror positioned on the rear side of said missing portion as seen from the light source and makes another reflection by that part of the spheroidal mirror which faces away said missing portion, thereby illuminating the object. The light source is positioned at the first focal point of the spheroidal mirror in such a way that it faces the mirror, and the spherical mirror is positioned in such a way that its reflecting face lies at the second focal point of the spheroidal mirror.

Abstract: A headlamp, particularly for vehicles. The headlamp includes a solid piece body formed from a transparent material. The body includes a first, light transmitting surface portion. At least a first and a second opaque mirror surface are disposed on opposite sides of a second surface portion of the body. The first mirror surface is shaped to produce a desired distribution of reflected light on the second mirror surface; the second mirror surface is shaped to produce a desired reflected light distribution in an area illuminated by the headlamp. Light from at least one light source is directed to the first mirror surface, reflected by the first mirror surface to the second mirror surface, and then reflected by the second mirror surface through the light transmitting surface.

Abstract: A manifold for use on a vehicle utilizing light from a remote light source. The manifold includes bi-focal parabolic reflector which collects and collimates light from the remote light source which is transmitted to the bi-focal parabolic reflector through a light guide, such as a fiber optic light pipe. Light from the reflector is reflected outward through a plurality of reflective facets to form a light beam.

Abstract: A light unit for use in lighted sign assemblies has a housing with a rear wall, upstanding opposed side walls, and shield elements extending inwardly from adjacent the upper ends of the side walls. Light arrays extending along the side walls have light emitting diodes disposed in spaced relationship above the rear wall and below the shield elements, and a diffuser extends across the housing above the shield elements. The rear wall is configured to reflect light emitted from the diodes relatively uniformly across the diffuser which further contributes to relative uniform transmission of light therethrough. The power supply may include a circuit to transform alternating current line voltage into a reduced direct current voltage for the diodes, and the power supply may also provide direct current to the diodes from a battery power source when power is interrupted.

Abstract: An armored housing with a top opening protects a lamp positioned inside against projectiles. The lamp preferably is carried by a first reflector structure which is resiliently suspended inside the housing to isolate the first reflector structure and the lamp from the shock of projectiles hitting the housing. The second reflector structure positioned above the housing receives light from the lamp and the first reflector structure and reflects that light downwardly and outwardly past the housing and over a wide area.

Abstract: An internally illuminated sign in which a luminaire mounted on the border or periphery of the sign uniformly illuminates the face and/or faces of the sign thereby eliminating any necessity for providing human access to the interior of the sign for maintenance and relamping.

Abstract: A light fixture includes a symmetric trough-shaped lens with a first longitudinal side which is substantially clear and a second longitudinal side with prismatic elements. The lens is reversibly mounted with brackets including parallel tines with pairs of opposing protuberances which fit into slots in the fixture. Side reflectors are optionally inserted into the lens inwardly adjacent from the end walls in order to adjust the light distribution pattern.

Abstract: There is provided a lighting apparatus comprising a light source, an ellipsoidal reflector having the first focal point at the light source, a spherical reflector having the center of sphere at the light source, a converging lens arranged at the outside of the spherical reflector and having a focal point thereof at the second focal point of the ellipsoid, and a light-controlling plate arranged in front of or at the back of the lighted object, so that the light beam projected on the part other than the effective lighted part of the lighted object is reflected by the light-controlling plate with various characteristics which are changeable such as the position or spectral distribution of the light resulting in lighting which is efficient and of uniform intensity and color on the lighted object.

Abstract: An emergency light fixture is disclosed which includes a frame and a cover for the frame that has translucent and non-translucent portions thereon. The translucent portions of the cover define the word EXIT. The cover is indirectly lit from the interior of the fixture by an array of light emitting diodes mounted in the frame beneath the cover. The light emitting diodes are positioned directly beneath the non-translucent portions of the cover adjacent the translucent portions thereof in order to provide a uniform illumination to the translucent portions of the cover.

Abstract: A remote control system in particular for locking and unlocking the doors of motor vehicles, the system being of the type including light source forming means associated with optical means adapted to configure the beam generated by the light source, wherein the optical means associated with the light source are adapted to define a transmission lobe centered on an aiming axis and comprising a first component of long range and small beam width together with a second component of shorter range and greater beam width.

Abstract: A light fixture includes a primary double arcuate buttocks-shaped reflector facing either a secondary double arcuate buttocks-shaped ("baby's bottom") reflector or a sieve-like reflector with lateral heat fins with a bulb therebetween. This system of reflectors emanates a large percentage of the visible light while absorbing a substantial percentage of the radiant energy and dissipating this radiant energy through the metal frame of the light fixture. The bracket for the socket for the bulb includes two parallel slots, perpendicular to the reflectors, to allow the bulb to be positioned between the reflectors.

Abstract: A light emitter for emitting partially collimated light in one or more selected directions. The light emitter has a longitudinally specularly reflective internal surface; and, a light emitting area having an inner portion which is both partially longitudinally specular reflective and partially longitudinally transmissive and, a refractive, prismatic outer portion.

Abstract: A luminaire, and typically an indirect luminaire, is provided with at least one visible lens element or other light transmissive media, the observable brightness of which is intended to enhance the performance of the luminaire in terms of providing a psychologically pleasing lighting environment. The brightness induced in the lens element is controlled by directing source light to the lens through a confined indirect light path provided by reflector components within the luminaire. Additionally, a light shield is provided internally of the luminaire to prevent direct source light from reaching the lens element. Preferably, at least one of the reflector components in the indirect light path is a diffuse reflector such that source light incident on the lens element is diffuse light.

Abstract: A display panel system includes a peripheral frame surrounding a translucent panel and an apparatus for backlighting the translucent panel. The backlighting apparatus includes a support arm hingedly connected to a light source. The support arm includes a gripping member, for securing the support arm to the peripheral frame for positioning the light source to radiate light through the translucent panel. In some embodiments, the backlighting apparatus further includes a reflector for reflecting stray light toward the translucent panel. The support arm is foldable against the light source to facilitate packing and shipping of the backlighting apparatus.

Abstract: An architectural member that may be installed, for example, in a ceiling contains means for receiving a light source, dividing and distributing light from the source into a number of paths within the member and means for directing the light from the member in each of a plurality of directions.

Abstract: The LED array of this invention is constructed of a printed circuit board, a plurality of LED chips disposed linearly on the printed circuit board, each LED chip being capable of radiating a light beam, and a reflection member for reflecting the light beam from the LED chips and guiding the light beam outward of the LED array in the main illumination direction generally parallel to the surface of the board.

Abstract: The present invention discloses a unique banklight apparatus and a method for uniform diffuse illumination of large photographic subjects. The banklight includes a reflecting panel, multiple lines of light source rows and diffusing panels for providing uniform illumination of subjects.

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.degree. 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.degree. from vertical. Unreflected light from the lamp which "misses" both reflectors also provides a degree of "uplighting," often found useful for aesthetic purposes.

Abstract: A lamp for motor vehicles including a fog warning or backup lamp. The lamp comprises a lamp compartment which is covered by a transparent cover glass towards the front portion. A bulb projects into the lamp compartment from the back and a parabolic reflector diverts light from the bulb onto the cover glass. High light values are obtained even in the case of a small light transmitting surface at the front of the lamp compartment. This is achieved in that the cross-section of the lamp compartment is larger than the light transmitting surface at the front of the lamp compartment and that the bulb is partly surrounded by a ball reflector which is located outside the light transmitting surface. The center of the ball reflector is at least approximately identical with the filament of the bulb and the ball reflector casts light form the bulb onto the parabolic reflector.

Abstract: An apparatus (10) for presenting shiftable light patterns includes a translucent globe (12), a convex redirecting mirror (16) mounted adjacent the upper interior surface of the globe (12), a laser beam source (20), a pair of galvanic vibration mirrors (22,24), and amplifier assembly (28) for vibrating the mirrors (22,24) in accordance with a respective pair of stereophonic audio signals (22,24). In operation, the vibration mirrors operate to change the impingement location of the beam on the reflecting mirror in direction in transverse to one another and in accordance with the amplitude and frequency of the audio signals resulting in light patterns which shift in accordance with the audio signals.

Abstract: An illuminator for a flat panel display utilizes at least one light source and at least one prism having total-internally-reflection at all but its front surface. Multiple images of the source(s) are provided over the front prism surface. A reflective coating can be used on at least one of the illuminator prism surfaces, so as to increase the total portion of the light from each source directed from an illuminator surface toward the display. The sources may be located within the prisms, or may be arranged colinearly with the elongated axis of each prism.

Abstract: A luminaire for high intensity indirect lighting providing a horizontally symmetrical light distribution with peak candle power at low angles is disclosed. The luminaire includes an inner light directing member nested in spaced relation within a generally dome-shaped outer translucent member. The inner light directing member includes means for directing the majority of light emitted by an axially located vertical light source out of the upwardly facing open end of the light directing member after no more than one reflection, and means for illuminating the outer translucent member to a substantially homogenious brightness level comparable to that of the surrounding ceiling.

Abstract: A light-condensing reflector positioned at the opposite side or end of a light source from a primary paraboloidal reflector in opposed reflector-to-reflector relationship to amplify light. The light-condensing reflector is selectively smaller in diameter than the primary reflector such that an annular or ring-like light orifice is formed between the outside periphery of a base of the light-condensing reflector and the inside periphery of a base of the primary reflector. Light amplified and condensed by the two opposed reflectors is collimated in an annular light beam through the annular light orifice. When applied to flashlights, spotlights and vehicle headlights, this invention increases the light intensity substantially.

Abstract: An illumination system including a plurality of light guide sections with one end of each disposed proximate an end of at least one other. Each one of a plurality of illuminating couplers is positioned intermediate proximately disposed ends of the sections such that light emitted from each such illuminating coupler enters associated proximately disposed ends of the sections. A pre-selected portion of light conducted down one of the sections towards the proximately disposed end is transmitted past the associated illuminating coupler into another of the sections. The pre-selected portion of light is sufficient to temporarily replace the function of light from the associated illuminating coupler in the event of diminished light intensity therefrom.

Abstract: A low voltage strip lighting assembly has an elongated flexible insulator strip having a base including two sides and a top surface having elongated slits that retain flat electrical conductors. A miniature wire terminal lamp bulbs are adjacent to the top surface of the insulator strip with terminals extending from the top surface of the insulator strip into a slit in the insulator strip to electrically contact one side surface of a respective flat conductor at any point along the length of the insulator strip, whereby the application of electrical power from an external source to each of the respective conductors will light the bulbs. A generally U-shaped lens covers the light bulbs and has legs engaging the sides of the insulator and inwardly-biased and secured to the insulator by the engagement of ribs into matching grooves in the insulator.

Abstract: A body of a material as clear as glass, is arranged behind the parts to be illuminated and passes light beams from at least one illumination source to the areas to be illuminated and reflects the beams by deflection at reflection surfaces to the individual areas to be illuminated. The optical conductor body (1) includes a plate (1) with a substantially planar surface, openings (7, 8, 9) extending transversely through the plate (1), the walls (7a, 8a, 9a) of these openings extending at right angles to the central plane (5) of the plate at an acute angle to the course of the light beams and having reflection surfaces. The light beams are passed parallel to the central plane (5) of the plate within the plate, the light beams being reflected into recesses provided as output areas and being reflected out of these recesses by means of reflection surfaces (10b) inclined with repsect to the central plane (5) of the plate.

Abstract: A plastic lamp housing is molded in one piece with two cantilevers extending forwardly from its rear wall for supporting a metal made reflector and a light bulb out of direct contact with all the inside surfaces of the lamp housing. The reflector thermally covers at least the top and bottom and rear sides of the light source for the reduction of heat transmission to the lamp housing. Depending from the lamp housing, a lamp standard has a hollow extending therethrough in communication with the interior of the lamp housing through a heat release opening formed in the bottom of the lamp housing. The lamp standard is for use in mounting the lamp on a hollow structural part of a motor vehicle in the vicinity of its rear window. Therefore, by creasing an opening in the hollow vehicle part, the heated air within the lamp housing can be vented into the hollow lamp standard and thence into the hollow vehicle part, instead of into the interior of the vehicle body.

Abstract: A high efficiency luminaire possessing high angle brightness control. Transverse high angle brightness control is provided by a substantially parabolically shaped reflector and longitudinal high angle brightness control is provided by a trough like lens assembly including a plurality of trough shaped lenses and screening means adjoining one another.

Abstract: A lighting fixture adapted for uniformly illuminating a wall surface by utilizing an asymmetric light reflection pattern. The fixture includes a support housing and an elongated concave-shaped reflector which is pivotably attached to the support housing and has multiple facet surfaces arranged for reflecting light from the centrally located light source out through a front opening, which is covered with an ultraviolet filtering glass diffusion plate. The reflector has major rear and minor front reflecting portions, each portion containing multiple facet surfaces arranged in upper and lower zones with varying angles measured relative to a central vertical plane selected for reflecting light from the light source uniformly out through the diffusion plate to provide an asymmetric lighting pattern for uniformly illuminating a wall surface.

Abstract: A light source which is capable of improving lightening efficiency is disclosed. The light source includes a phosphor layer provided at a part of a filter arranged adjacent to a light emitting lamp or arranged so as to serve as a reflection layer so that it may transmit light of the lamp required and be excited by a part of light of the lamp to emit light of a visible region to increase the intensity of light discharged from the light source.

Abstract: A light-source multiplication device useful in a warning light device, a traffic signal light device, a light display or a lighted sign includes light-emissive diodes as light sources with a multi-prism having facets having apices on an imaginary spherical surface for providing multiple images of the light-emissive diodes, some of which can be viewed over a wide field of vision, thereby minimizing power and maintenance requirements of the device.

Abstract: A cap mounted self-illuminating patch which includes a reflector unit mounted to extend partially through the front surface of the cap. The reflector unit includes a screen supporting surface which defines the open side of a light chamber, and a light diffusion screen is mounted on the screen supporting surface to extend across the open side of the light chamber. The screen supporting surface and the screen are configured so that the screen substantially conforms in shape to the front surface of the cap, and a mounting structure is provided to space the screen outwardly from the front surface of the cap. Indicia or figures to be illuminated are provided on the screen, and light from a single point light source within the light chamber is substantially evenly distributed across the screen by a back reflector extending outwardly from the screen supporting surface away from the screen to define the light chamber.

Abstract: A reflector for linear light sources and particularly for fluorescent tubes. The reflector has a substantially V-shaped cross-sectional configuration. For use in an array of lamps comprising a plurality of light sources arranged in parallel, a plurality of reflectors of the type disclosed may be assembled to form a reflector arrangement corresponding in size to the array of lamps, with the assembly in its entirety being sawtooth-shaped in cross-section.

Abstract: A lighting fixture consisting of a downwardly opening housing having a plurality of fluorescent lamps mounted therein, a louver assembly substantially closing the open bottom of the housing and dividing its area into vertically open cells only certain of which receives light from each of the lamps, the louvers being of sufficient vertical height to restrict light passing directly through the cells to a restricted primary area of brighter illumination in the room below, and a translucent light-diffusing panel covering the cells of the louver assembly receiving light from each of the lamps. The lamps may be selected to emanate light of respectively different colors, and both the louvers and the light-diffusing panels may be of selectively different tints and colors, so as to impart a novel, decorative appearance to the louver assembly when viewed from outside of the primary lighting area.

Abstract: For carrying out work during darkness by means of transloading vehicles on military field transloading posts, the apparatus for apron illumination while not making the post visible to undesired observers, comprises an apparatus casing with a light source arranged in its interior having an upstream-connected condenser lens and with a front lens, to which are connected two plane mirrors deflecting the optical path twice by 90.degree. with interposed inwardly and outwardly pivotable diaphragms and/or filters, an exit optics being arranged in the light beam passing out of the lower plane mirror.

Abstract: A task lamp is disclosed which includes a reflector assembly and two sockets for receiving light bulbs mounted in a housing. The reflector assembly has a planar reflecting surface, front and back reflecting surfaces, and side reflecting surfaces. The planar reflecting surface serves as a base, and the front, back, and side reflecting surfaces extend from the planar reflecting surface and have predetermined angles with respect to a vertical plane when the lamp is in its normal operating position. The reflector assembly also has a pyramidal reflecting piece with triangular reflecting surfaces that extend from the planar reflecting surface. The base of the pyramidal reflecting piece is positioned against one of the front and back reflecting surfaces, while the vertex of the pyramidal reflecting piece is positioned proximate the other of the front and back reflecting surfaces.

Abstract: According to the invention clear and yellow transparent zones are provided on the surface of a light diffusing element associated with a headlamp for a moving vehicle. The light emitted from the lamp has the characteristics of both white and yellow light. High intensity white light provides satisfactory illumination for highway driving, while the yellow light emitted penetrates fog, dust and/or smoke better than the ordinary white light. The benefits of both light are realized with a single lamp. The coloration of the light diffusing member can be accomplished by treating a conventional white light headlamp.

Abstract: A lamp comprising a concave mirror; a light source located at the focus of said concave mirror; a lens means provided in front of said concave mirror and said light source comprising a central portion for allowing light from said light source to pass directly outward therethrough, and a peripheral portion around said central portion for providing directivity with the light reflected from said concave mirror by allowing the light to pass outward therethrough. The improvement comprises an annular reflector provided on the peripheral portion of the central part inside said lens means for reflecting light emitted from said light source toward said peripheral portion of said lens means back towards said concave mirror past said light source. Light reaching the concave mirror from the annular reflector and light reaching the concave mirror directly from the light source are directed toward the lens in directions parallel to the axis of the light source, thereby providing enhanced illumination by the lamp.