Abstract: A reflective shade for an electric table lamp includes a conventional frustrum shape but with removeable translucent plastic disks spanning the top opening for reflecting the light back down toward the table top and for transmitting colored light for creating an ambiance in the environment. The disks attached to the shade are supported on a cylindrical chimney and the lower disk may fit within the chimney to center the shade on the lamp.

Abstract: A lamp assembly for an automotive vehicle includes a remote laser light source coupled with a light transmitting fiber optic light guide which illuminates a unitary thin sheet optic having a diffractive optical element portion, a manifold section, and a kicker section.

Abstract: The light radiation beam emitted by a source with finite dimension, integrated within a transparent plate, in contact therewith, is initially reflected inside the plate by a first reflecting or semi-reflecting planar surface towards a second planar reflecting surface. Both reflecting surfaces are constituted by portions with an irregular profile provided in the two faces of the transparent plate, without applying a reflective coating.

Abstract: A light diffusion composite comprises a light diffusion material disposed on a prism sheet, wherein the light diffusion material is obtained by laminating a light diffusion layer including 100 parts by weight of acrylic resin and 100-220 parts by weight of spherical particles of polymethyl methacrylate on a transparent support. The light diffusion composite has better luminance in the front direction than the conventional light diffusion sheet and also has good light diffusibility.

Abstract: A portable general illumination lamp unit having very low power consumption (under 100 mA) and producing a high intensity light. A dual conductor wire protrudes from the lamp housing body to connect to a power source. The lamp housing has a housing body, a flush fitting lid and a downward facing lens. The housing body has an exterior surface suitable for light diffusion. A low power, high intensity light bulb is attached to conductors on the wire using insulated wire straps, and a strain relief member is molded onto the dual conductor wire. The strain relief member is fixed to the lid of the lamp housing and sealed in place with a waterproof epoxy, oriented so that the bulb will be positioned in the center of the housing body. The housing body receives the lid. The opposite end of the wire lead can connect for permanent mounting of the device, or attach to a plug appropriate for the power source desired. Alternatively, the dual conductor wire can connect to a switch and one or more batteries.

Abstract: A tricolor lighting system uses first and second dichroic filters or mirrors to separate light into different colors, primarily red, green, and blue. The light is directed into input ends of respective first, second, and third light guides for a desired end use at a remote location. Various embodiments use either paraboloid or ellipsoidal reflective surfaces associated with the light source and in selected embodiments, the first and second mirrors are disposed in a crossed relation to provide a compact system.

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 illuminated display is disclosed, comprising a housing, a reflector and a light source for displaying translucent photographic images. The reflector and the light source are specially designed relative to each other to provide uniform luminance on a plane containing the image being displayed. An interchangeable frame and an adjustable positioning structure are used to make the display as functionally practical and as aesthetically pleasing as a conventional picture frame.

Abstract: A system enabling conversion of a conventional ringlight for differential illumination such as dark field or Rheinberg illumination is disclosed. The system comprises a ringlight having an annular light emitting portion and a hood that fits over the ringlight. The hood has an aperture and an annular reflective surface, disposed opposite the light emitting portion, that reflects the light from the ringlight through the aperture. An angle of the annular reflective surface is selected relative to a direction of light from the ringlight to form a cone of light exiting the aperture. To ensure good contrast, a light baffle in the form of a sleeve, inserted into the ringlight, may be incorporated to prevent stray light from the ringlight from directly exiting through the aperture. The differential illumination produced by the invention is applicable to machine vision applications, but also microscopy, gemology, and serology, for example.

Abstract: A vehicular lamp having an improved external appearance, wherein a proximate part of a corner part of the reflective surface and a part (approximately the upper half) of the adjacent non-reflective surface are segmented in the diagonal direction in the prescribed width, and a plurality of small reflective surfaces are formed in a step-like manner in the diagonal direction in this segmental part. The front-view appearance of the lamp when the bulb is illuminated is improved thus through illumination of the reflector to the most exterior point at the corner part with the reflected light provided from the small reflective surfaces. The available solid angles on both sides of the segmental part are wider than in the case where the entire areas of the reflector are formed as a multiple reflection surface so as to eliminate every non-reflective surface at the corner part, and thus the influence on the light distributing performance is minimized.

Abstract: A Lambertian light source assembly has high uniformity, large size, and high brightness, typically having a non-uniformity about 10% or less (e.g. about 5%), and a surface brightness of at least about 2000 footlamberts. The assembly includes a light emitting element (such as a single arc lamp, e.g. a metal halide lamp), a first reflector having an interior diffuse reflective surface comprising a portion of a surface of revolution and a center axis, a second reflector, and a diffuser. The diffuser is connected to the first reflector. The light emitting element is substantially centrally located on the center axis, and the second reflector is located between the diffuser and the light emitting element and reduces the apparent surface brightness at the center of the first reflector and blocks the majority (e.g. all, or almost all except adjacent the first reflector) of direct illumination of the diffuser by the light emitting element.

Abstract: A signaling lamp including a hollow cylindrical supporting column made from a light-transmitting material which has a central portion bulged outwardly so that the interior surfaces are made into reflective surfaces. LEDs are arranged in rows so as to face each other above and below the reflective surfaces, and the supporting column and the LEDs are surrounded by a globe which has diffusing lenses. The light from the LEDs is reflected toward the circumference by the reflective surfaces and is projected into the surrounding area via the globe.

Abstract: The present invention provides a fog signal lamp, which comprises a bulb set, a reflector, a shade holder, a decorative frame, an ornamental ring, a lampshade and an enclosing cover. Wherein, a colorful transparent ornamental ring can be fixed in the decorative frame, and the decorative frame is mounted on the front end of the reflector, therein the connection of the ornamental ring and the decorative frame is in bayonet joint. When the fog signal lamp is turned on, the beam emitting from the bulb shining the reflector is refracted and spotlighted with the lampshade as a common head-lamp, meanwhile the transparent ornamental ring absorbs refracted light to create a colorful ring light as a fog signal lamp.

Abstract: A lamp head incorporated with an anti-combustion arrangement, which includes an upwardly directed pan and a reflector member disposed internally of the pan. The reflector member has a planar lip for supporting a reflecting disc and a holding means for electrically receiving a halogen light source. The reflecting disc has an inner concave reflecting surface positioned below the halogen light source. A shielding lens is mounted on the planar lip for closely covering the halogen light source, wherein a high temperature burning zone is formed above the concave reflecting surface and around the halogen light source. The anti-combustion arrangement includes a transparent protective shelter and a supporting means.

Abstract: An illumination apparatus is disclosed which efficiently irradiates an irradiation surface without destroying the symmetry of an illuminance distribution at the irradiation surface. A light source is displaced from a center of curvature of a spherical mirror in a direction in a displacement plane which includes an axis of symmetry of the spherical mirror so as to form a light source image at a position off the light source. Due to this, a ray from the spherical mirror passes off the light source (i.e., the position of the light source image), and therefore, a reflection ray is not shielded, absorbed nor otherwise disturbed by the light source, which in turn prevents deterioration in the efficiency of utilization of light.

Abstract: A signal light housing is comprised of three basic component parts; a back plate, a mounting plate and a lens cover. The back plate is provided with a substantially flat exterior surface to enable the signal light housing to be mounted flush against the exterior surface of a vehicle. The lens cover encloses an interior volume of the housing and can be removed from the housing without removing the housing from the vehicle surface. The mounting plate is removably attached to the back plate and provides a sufficient area to support a variety of different types of signal light assemblies thereon within the interior volume of the housing. The mounting plate is easily removed from the back plate to remove a defective signal light assembly from the housing, and enable its replacement with an operative signal light assembly attached on a like mounting plate.

Abstract: An elongated light fixture is disclosed which includes an elongated hollow transparent tube and a lens panel slidably mounted in the housing to disperse light and/or provide direct light from the fixture. An elongated reflector is mounted in the housing above the lens panel and has one or more light bulbs lighted thereon. The tube has open ends which are closed by caps secured thereto.

Abstract: A bright bulb with a parabolic or elliptical reflector project light through a duct with internal reflective walls to a liquid crystal display having the same or smaller area than the reflector area. The duct tapers from a circular entrance aperture to a rectangular exit aperture and enhances brightness and uniformity. An IR mirror between the lamp and the duct reflects heat to the lamp. A holographic diffuser at the exit aperture further improves uniformity. The LCD polarizer is mounted on the diffuser and spaced from the liquid crystal cell by an intervening cooling air passage to minimize heating of the cell. The display is suitable for HUD applications.

Abstract: A lens body for providing a flat light distribution has a pair of reflective surfaces inclined vertically and symmetrically and used as an illuminating device for a vehicle which does not cause glaring against the on-coming vehicles traveling on the opposite lane. Light entering from an incident surface is emitted from an outgoing surface after being reflected. Areas illuminated by the pair of reflective surfaces are formed having a substantially horizontal cut line CL at the right and left sides of an illuminated area by direct light emitted from the outgoing surface directly without being reflected on the reflective surfaces.

Abstract: A fog lamp or the like having a lens disposed in front of a reflector and having portions inclined right and left, which lamp makes effective use of light reflected from the reflector and also has reduced regenerative action in an outer end portion of the lens. The reflector has a left reflecting surface area and a right reflecting surface area with a perpendicular surface containing the optical axis of the reflector as the boundary thereof. The left reflecting surface area is formed as a paraboloid of revolution, while the right reflecting surface area is formed as a laterally diffusing curved surface which reflects incident light from the light source in such a manner that the more distant a reflecting point is from the optical axis in the lateral direction, the larger a reflection angle is with respect to the optical axis.

Abstract: Visibility of a distant area illuminated by a headlamp of a vehicle having a centralized light source type is improved. The headlamp for the vehicle include a light source, an optical cable emitting an incident light from the light source, lens bodies forming the incident light from the optical cable into a desired light distribution and irradiating the incident light ahead of the vehicle. The lens bodies have lens-shaped outgoing light surfaces where focal points are located in the vicinity of the incident light surfaces of the lens bodies, and the lens bodies have reflective surfaces R.sub.1 and R.sub.2 reflecting the incident light toward an outgoing light surfaces. The light axis X of the optical cable is tilted by a predetermined angle .alpha. with respect to the reflective surfaces R.sub.1 and R.sub.2.

Abstract: Headlamp system for an automotive vehicle has an individual lamp for illuminating a high intensity zone and a spread zone of an image surface. The system includes a first light source having a substantially elliptical reflector for directing light to a spread light zone on an image surface and a second light source having a filament mounted in an axial direction to the length. A second reflector has a generally elliptical shape, a first focus, a second focus and a magnification. The second reflector directs light to a high intensity zone on the image surface. A light shield having a generally planar surface is mounted substantially normal to the longitudinal axis substantially at the second focus. An aspheric lens having an aperture having a width is located between the shield and image surface. The maximum magnification of the filament at the aspheric lens is substantially the width of the aperture.

Abstract: A background lighting apparatus includes a light entering edge surface around substantially the entire periphery of a highly internally reflecting transparent plate wherein light beams enter from peripheral light sources and travel toward the central portion of the plate and are dispersed and diffused by a diffusion system formed relative to the transparent plate. Uniformity of luminance provided from the background lighting apparatus is enhanced as a whole by increasing the incident quality of the input light beams into the transparent plate while easing the incident directivity of the light beams on the transparent plate with the overall substantial enhancement of luminance produced from the apparatus.

Abstract: An improved ornamental lighting device comprising a base having an open end and a cavity communicating with said open end, a socket for receiving an electric bulb, and a wire for securing a pendant prism to said base at said open end.

Abstract: A vehicular headlamp has a reflector which is so optically designed as to provide, by reflecting light from a light source, a basic beam pattern of approximately semicircular shape wholly disposed below the horizon, with a top edge cutoff extending horizontally. A front lens is stepped to produce a lower beam pattern by raising part of the basic beam pattern and by horizontally expanding the rest of the basic beam pattern. The top edge cutoff of the lower beam pattern is as clearcut as that of the basic beam pattern. Either of two different lower beam patterns required for vehicles keeping to the right and for those keeping to the left is producible merely by changing the optical design of the front lens.

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: A headlight for a vehicle has a pot-shaped housing (1) which is closed at its front side by a light-transmissive shield (2). A reflector (4, 13) is mounted in an interior space formed by the light-transmissive shield and the housing. An opaque shield (5) covers at least a partial area between the light-transmissive shield and the reflector and at least a portion thereof is formed of an outer sidewall portion (6) of the reflector-receiving housing which is inwardly-drawn to extend toward an interior of the headlight.

Abstract: An automotive signal lamp is provided including a lens illuminated by a first light source on a first side, a transmissive hologram adjacent the lens for providing an image when the first light source is activated, and a reflective hologram adjacent the transmissive hologram for providing an image when the first light source is nonactuated and the lens is illuminated by a second light source on a second side of the lens generally opposite the first light source.

Abstract: A fluid optical system for focusing all entering light whatever its direction and incidence, and having an entrance surface through which the light enters. The optical system has a volume having an optical shape generated by a logarithmic spiral so that the focusing occurs for light beams entering the entrance surface from any direction through any point of the entrance surface. There flows in the optical shape a fluid which is maintained in forced circulation to form a fluid optical system, and which is forced to enter the optical system tangentially to the optical shape and adjacent to the entrance surface which is arranged so that initial circulation is tangential and laminar. Inside the optical system, the fluid has a centripetal rotation movement until it exits through a cone end of the optical shape, thus draining off calories.

Abstract: A fluorescent backlit display or the like embodying a generally planar light transmissive display panel, a back wall having a generally planar diffusely reflective surface facing, spaced from and parallel with the display panel an array of spaced parallel cylindrical lamps between and parallel with the display panel and back wall, improved light leveling means including masking means on the side of each lamp facing the display panel, and a light spreader associated with each lamp at the diffusely reflective back wall surface and effective to reflect laterally outwardly onto the back wall surface light flux directed thereat from the side of said lamps facing said back wall, whereupon the thus reflected light flux is directed forwardly toward areas of said display panel in front of the respective lamps.

Abstract: A lampshade structure of halogen lamp contains a lampshade, an inner aluminum casing, a rod-shaped lamp, a glass casing and two pressing plates. The inner chamber of the lampshade is made of metal. Two sockets with corresponding rectangular recesses are disposed in the lampshade. The pressing plate which has an incurved plate to connect the lampshade and an outcurved plate to press and fasten the glass casing tightly. The aluminum casing is inserted into the recesses of the sockets. The lamp which is inserted into the sockets is enclosed by the aluminum casing and the glass casing.

Abstract: An illuminator for use with a light source having a light distribution pattern within a solid angle of 2.pi. steradians. The light source comprises or includes a series of LED's or light pipes positioned at or near a focal point of a reflective surface and inclined at an angle to a focal axis of the reflective surface such that all of the light from the light source is collected and distributed by the reflective surface. Whereby the reflective surface is optimized to confine the light output only to the required photometric zones thus maximizing the efficiency of the illuminator.

Abstract: An illumination device for vehicles has at least two headlights arranged on a front side of a vehicle and radiating different light beams having at least an upper bright-dark limit so that a headlight arranged on a vehicle side facing away from an opposite traffic side radiates a horizontally dispersed light beam which has a substantially horizontal upper bright-dark limit and illuminates at least the opposite traffic side, while another headlight arranged on a vehicle side facing the opposite traffic side radiates a light beam which illuminates a traffic side and an edge region outwardly adjoining the traffic side and has an upper bright-dark limit with at least a portion which is higher than the bright-dark limit of the light beam radiated by the first-mentioned headlight.

Abstract: A low voltage reflector lamp comprises a bowl-shaped reflector symmetrically disposed about an optical axis, and a low voltage light source permanently located within the reflector at a predetermined position. A transparent or translucent decorative appendage is located at the outer edge of the annular rim of the reflector, said appendage also having a rim at an annular edge of complementary size to that of said first annular rim. Annular fixing means serve to press said rims together to secure said decorative appendage rigidly to said reflector.

Abstract: Back lighting for an transmissive display panel such as a transparency or a liquid crystal display for direct viewing or image projection is afforded by a light source spaced from the display panel and an intervening light coupler comprising a tapered duct with reflective inner walls such as a frustoconical mirror. The small end of the duct is adjacent the light source and may include a diffuser film to enhance light uniformity at the display. Light reflection from the reflective walls provides off-axis viewability with substantially uniform brightness. The light coupler is useful in a vehicular head up display.

Abstract: A headlamp for motor vehicles in which an inner lens formed with distribution beam control steps can easily be fastened to the front opening of the reflector. Holes, which receive respective protrusions protruding from the lower edge of the inner lens, are formed in the lower surface of the reflector, and cutout portions provided on the front end of the upper surface of the reflector are located further rearward than the protrusions, whereby the inner lens maintains engagement with the front opening of the reflector lens contact faces by its own weight. The upper edge of the inner lens can easily be fastened to the front end of the upper surface.

Abstract: An illumination system for a semi-tractor and trailer includes a pair of illumination housings, one attached to either side of the trailer just above the rear wheels. A reflector within each housing reflects light from a light source downward and outward through a clear lens to encompass an arc extending from the vertical to a predetermined angle, e.g. approximately 45 degrees from vertical. Light is thus directed onto the pavement and any objects immediately adjacent the trailer rear wheels to aid the driver in close quarter maneuvering, turns, and when changing highway lanes. A control circuit is connected to each light source and to the turn signal lead on the respective trailer side to provide steady power to the light source only when the turn signal and/or emergency flasher circuit is enabled. An optional amber lens can be provided on the side of each illumination housing to resemble the ordinary running lights on a typical semi-trailer.

Abstract: A flashlight is disclosed comprising a light source and a reflector for collimating the light emitted by the light source to form a collimated light beam. An electro-optically controlled region is disposed forwardly of the light source, the collimated light beam being incident upon and passing through the electro-optic region. The electro-optic region may be operated in at least two states. In a first embodiment, and in a first state, the electro-optic region does not substantially affect the collimation of the light beam incident thereon, and the flashlight produces a spot beam. Also in the first embodiment, and in a second state, the electro-optic region scatters forwardly the collimated beam incident thereon, and thus the flashlight produces a well-diffused flood beam.

Abstract: The high output luminaire of the invention is capable of lighting a specific and determinable area defined by front and rear light shields. A reflector is mounted inside of a housing to forwardly direct light from a lamp positioned therein. The housing includes a hinged, waterproof access door having a transparent portion through which light from the lamp is shown. Adjustable front and rear light shields decreases the front and rear beam spread angles to confine the light from the luminaire to a chosen area.

Abstract: A lighting fixture substantially comprising a lamp housing and an illuminant disposed therein, with a transparent decorative body being provided below the illuminant and spaced from the lamp housing, and a plate reflective on the side facing away from the illuminant and having a central bore being disposed between the illuminant and the decorative body.

Abstract: A reflective base assembly for a performance stage lamp includes a base with a first pair of opposite sides and a second pair of opposite sides, a first pair of reflective mirrors respectively extending from the first pair of opposite sides of the base and meeting at a position above the base, a second pair of reflective mirrors respectively extending from the second pair of opposite sides of the base and meeting at a position above the meeting position of the first pair of reflective mirrors, and a pair of filter lenses respectively extending from the first pair of opposite sides of the base and meeting at a position above the meeting position of the second pair of reflective mirrors.

Abstract: A lens for a lighting device mounted on a vehicle, wherein said lens is composed of an aesthetic design surface portion, a foot fitting portion arranged around the periphery of said aesthetic design surface portion, and a corner portion along which said aesthetic design surface portion and said foot fitting portion are jointed to each other, characterized in that to assure that drops of dew are grown merely on the foot fitting portion of the lens regardless of the cooling action progressing outside of the aesthetic design surface portion of the lens, the aesthetic design surface portion is dimensioned to have a thickness larger than that of the foot fitting portion, and the corner portion is dimensioned to have a thickness larger than that of the aesthetic design surface portion.

Abstract: An LED indicating light assembly is mounted on the interior side of a computer housing wall, over a lens opening therein, and is operative to provide a visual confirmation that an operating component within the computer housing is activated. The assembly includes a mounting socket structure having an open front end securable to the housing wall over the lens opening, and an open rear end. An elongated lens member is longitudinally inserted forwardly into the socket structure to position a front end portion of the lens in the housing wall lens opening. As the lens is inserted into the socket structure, a transverse mounting pin portion of the lens, intermediate its front and rear ends, is latched into place by a resiliently deflectable outer side wall portion of the socket structure. An LED device positioned behind the mounted lens is used to illuminate its front end portion.

Abstract: The invention relates to a flash device, preferably for transferring a dye matrix which by means of a high-energy light flash is transferred from a radiation-absorbing carrier film by interleaving a mask onto a receiver element. This requires substantially perpendicular irradiation of the transfer plane with a high-energy radiation and a high uniformity of irradiance distribution of the light flash. To achieve this, one or two linearly extending plasma discharge tubes are provided which to concentrate radiation are enclosed by two separate aspheric-cylindrical reflectors, the concentrated radiation being directed through a lamellar louver element arranged downstream of the reflector and impinging on the predetermined transfer plane in a substantially parallel and perpendicular manner.

Abstract: To allow environments to be lit with light having characteristics as close as possible to natural light, the appliance (1) comprises a frame (2) supporting pluralities of light sources (5, 6) the light from which is reflected to the outside of the appliance (1) by a reflecting screen (4) via a translucent screen (3). The light sources (5, 6) are of different color temperatures in terms of illumination and are electrically powerable separately via a central control unit (24) in a such a manner as to enable them to provide a luminous flux of variable intensity.

Abstract: A method of providing uniform illumination of a light transmissive image on the light transmissive display panel of a fluorescent backlit display or the like, which includes blocking of a portion of the light flux projecting from at least one elongated tubular lamp toward the display panel in a plane including the lamp axis and normal to said panel; and blocking decreasing amounts of light flux projected from said lamp toward the display panel at points thereon spaced at successively greater distances on each side of said plane. A variable opacity light leveling mask configured to produce the aforementioned uniform illumination is interposed between the lamp and the display panel.

Abstract: A wall light fixture is disclosed which includes a hollow generally translucent bowl. The bowl has an upwardly opening recess formed therein and a reflector is mounted in the bowl within the recess. The reflector has a predetermined light reflective pattern in order to reflect light from a source contained within the reflector to reflect light upwardly relative to the frame and laterally to at least a portion of the transparent bowl so that the bowl reflects light within it to provide an entirely luminous surface on the bowl.

Abstract: A line light source has a light-emitting element that emits light into an insertion conduit. A light absorber absorbs light that makes greater than a predetermined angle with the axis of the light conduit.

Abstract: Reflective, metalized plastic films for use in lighting fixture reflectors have improved performance when the plastic film upon which the metalization layer is deposited contains ultraviolet absorber.

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.