Abstract: A tail light assembly for an automotive vehicle has a housing provided with a back panel and a translucent cover secured to and cooperating with the back panel in defining a tail light chamber. A row of light bulbs is mounted in the chamber in spaced apart relation. A reflector is secured to the back panel behind the light bulbs. The reflector is of the Fresnel-type having annular reflector segments encircling each bulb and shaped to reflect the rays of light from the bulbs along substantially parallel paths. The reflector is in the form of a substantially flat plate having an edge along the row of light bulbs which is substantially straight or only slightly curved and visually perceptible through the translucent cover when the light bulbs are illuminated. Electrical circuitry for the light bulbs is disposed within the housing sandwiched between the back panel of the housing and the reflector plate. Preferably, the circuitry is disposed in a recess in the back panel.

Abstract: A decorative panel comprising a first transparent plate on which a multiplicity of faceted glass stones is fixed in an ornamental arrangement, and a second plate with a reflective layer which is held at a distance from the first plate and from the glass stones by a frame, whereby the second plate has an area not provided with a reflective layer below which a decorative body is disposed on the inner side of the plate, the side surface of said body being provided with a reflective layer so that light fed from a light source into the decorative panel is reflected on this side surface.

Abstract: A headlight for a vehicle comprises a reflector. A light source having a light body. A shutter forming an upper bright-dark limit of a light bundle exiting the headlight. A lens arranged after the shutter is considered in a light outlet direction so that light reflected by the reflector passes through the lens. The reflector being formed so that light produced by the light body is reflected by the reflector so that it intersects an optical axis of the reflector and from the apex region of the reflector great images of the light body are reflected so that after passing through the lens they are arranged substantially close to the bright-dark limit.

Abstract: A lighting device includes a cutout portion formed at the lower part of a reflective mirror corresponding to a part of the light beam reflected from the reflective mirror and shaded by a shading plate, a first reflective plane consisting of a left-hand reflective plane half and a right-hand reflective plane half for allowing a large part of the light beam emitted directly from the light source to converge in the vertical direction, and a second reflective plane disposed behind the first reflective plane with a vertical attitude for allowing a large part of the light beam reflected from the first reflective plane to be reflected again at the second reflective plane to converge in the vertical direction, to improve a light beam utilizing rate of a light source and light irradiating performances of a projector type lighting device, and moreover, increase a light irradiating intensity of the lighting device.

Abstract: A lamp unit having an elliptic reflector, a light source positioned at a first focus point of the elliptic reflector, a bracket fixed to a front end of the reflector, a projection lens mounted on a front end of the bracket and a holder member for holding the projection lens onto the bracket. The holder member is a plate like member provided along the circumference of the bracket. One end of the holder member is bent inward to form a bent portion which supports a rear end of the projection lens, while the other end of which is partially press-fitted in a plurality of holes formed on a side surface of the bracket.

Abstract: A reflector system for a flashlight or the like includes a rear reflector of at least partially parabolic shape and a light source mounted at the focus of the parabolic reflector surface. A lens is mounted between the light source and the open forward end of the reflector to occlude any light beams which would otherwise travel uninterrupted from the light source out of the open forward end of the reflector. The rear reflector may include a spherical surface portion at its center for intensifying the light source, and a collimating pillar of transparent material extends inwardly from the center of the forward end of the reflector towards the lens for collecting light re-directed by the lens, and mixing and breaking up any image forming rays.

Abstract: A motor vehicle headlight of the type comprising a lamp having a filament (100), a reflector (200) defining an optical axis (Ox), and a closure glass (300), the filament emitting light freely in all radial directions thereabout and the reflector having a smooth and essentially continuous reflecting surface which reflects the rays emitted by the filament in such a manner as to cause the majority of them to be situated beneath a cut-off (hHc; hh) constituted by two half-planes of given height and slope.

Abstract: A car headlight lamp having a lamp envelope (1), which is closed by seals (2) through which current lead-in members (3,4) are passed and is secured by a holding member to a socket (17), the holding member having a dipping cap (12), which at least partly surrounds the lamp envelope and is connected to a current lead-in member (4) of the lamp envelope. The socket (17) has an outwardly projecting cylindrical flange bush (24) for receiving the lamp envelope (1) and the lamp envelope has a tubular prolongation (6), onto which a clamping sleeve (7) is slipped, which consists of a cylindrical sleeve body (8), which has an outer flange (9) secured to the flange bush and several inwardly directed resilient tongues (10), which bear on the prolongation of the envelope. The dipping cap (12) is secured to the clamping sleeve (7).

Abstract: An improved light diffusion box for photographic, industrial and consumer uses. The light diffusion box includes a hollow housing of fabric material provided with a front screen and having means for securing a ring to the rear end thereof, the ring being adapted to mount a light source within the housing. The housing has sides which are coupled together and each side has a silver laminate layer adjacent to a thin, white nylon layer. A deflection/transmission panel is between the light source and the front screen. A graduated or alternated deflection/transmission pattern is printed on at least one face of the panel and such pattern is equal and opposite to the naturally-occurring light fall-off from the light source. The center of the pattern forces the strong light nearest the source to be largely deflected into the sidewalls of the housing and only slightly transmitted.

Abstract: The present invention relates to an automotive headlamp construction in which chromatic aberation is substantially eliminated. The headlamp includes an elliptic reflector, a light source disposed at a first focal point of the elliptic reflector, a condenser lens which is focused generally at a second focal point of the elliptic reflector, and an outer lens provided in front of the condenser lens. In accordance with the invention, the radius of curvature of the outer lens is reduced at a vertically middle portion thereof to form an angled portion through which light from the light source passes. The angled portion acts as a lens having a focal length such that chromatic aberration of the condenser lens is canceled out.

Abstract: The automotive lamp assembly according to the present invention comprises a divergent-type concave mirror formed by a central reflecting area in which the optical axis lies and peripheral reflecting areas continuously extending rightward and leftward from the central reflecting area, and a lamp bulb disposed on the optical axis of the concave mirror. Either of the central and peripheral reflecting areas is formed as a first reflecting curved surface composed of a part of a paraboloid of revolution to reflect the incident rays of light from the lamp bulb in directions parallel to the optical axis, and the other is formed as a second reflecting curved surface to reflect horizontally the rays of light from the lamp bulb in directions divergent from the optical axis depending upon the distance from the vertical plane in which the optical axis lies and also reflect vertically the rays of light in directions parallel to each other and to the horizontal plane in which the optical axis lies.

Abstract: Disclosed herein is a vehicular headlamp, which comprises a compound light reflector having a concave light reflecting surface which consists of upper, lower, left and right triangular parts which are radially arranged about a given portion of the reflector. The upper and lower parts have a substantially common focus and are so arranged that when light rays are emitted from the position of the common focus, the upper and lower parts reflect the light rays forward to form a horizontal focal line before the common focus. Each of the left and right parts is so shaped and arranged that when cut by a horizontal plane, it shows an elliptic line along the cut edge, and when cut by a vertical plane, it shows a parabolic line along the cut edge. The upper, lower, left and right parts are so arranged as to have their focuses positioned at generally same position.

Abstract: The projector-type head lamp for vehicles comprises a reflector having an optical axis, a lamp bulb operable as a light source, having a filament horizontally disposed in a direction perpendicular to the optical axis, and a convex lens disposed in an area defined by the light beam shaped by the rays of light reflected by the reflector and having an optical axis nearly coincident with the optical axis of the reflector. The inner reflecting surface of the reflector has a main reflecting area including a part of a spheroid having the first focus near the center of the filament as light source and the second focus near the center of the cut-off edge, at least parts of the main reflecting area located above or below the horizontal plane in which the optical axis lies and which define multiple largely slanted filament images on the screen being formed as sub reflecting areas having such reflecting characteristics as to shift the filament images horizontally.

Abstract: A projection-type vehicle headlight includes a sheet metal support (11) which provides a light shield (3) between a convex lens (2) and a reflector (1). The support is rigid and has arms (12) which are fastened to the ellipsoid-formed reflector. The arms are appended to a lens frame (13), which receives the lens, of the support. The light shield is in the form of a spherical bulge which extends, or is convex, toward a light source (5), the bulge being produced by "drawing out" areas of the support lying within the lens frame. A light shield edge (6) is formed by "blanking out" an opening in a top half of the spherically shaped bulge.

Abstract: A headlight having a reflector with the optical axis thereof being inclined relative to the optical axis of the headlight, a light source provided on a focus of the reflector and on the optical axis thereof, a projector lens in front of the reflector, and a shade plate provided nearly on a focus of the projector lens. The reflective surface of the reflector is formed to reflect the light emitted from the light source and to converge the reflected light into a curved line on a plane parallel to a plane including the optical axis of the headlight.

Abstract: In a light assembly in which a holder in which a bulb is fixed is replaceably mounted in a lamp housing having a reflector formed integrally therewith, the portion near the apex of the reflective surface of the reflector is formed flat, so that the reflective surface of the reflector can be formed without taking in consideration the molding precision of the portion near the apex and that any of the lamp units under different standards are applied can be accomodated. Furthermore, since the light emitted from the filament and going toward the flat portion can be prevented by a shade from being incident upon the flat portion, thus preventing any glaring light from occurring.

Abstract: The luminaire comprises a cup-shaped reflector having facets which are curved continuously and extend from the light emanating aperture of the reflector towards the reflector axis. The facets of the reflector, in planes transverse to the reflector axis, are straight and constitute a regular polygon. The luminaire further comprises a circumferential light-absorbing collar which has a portion which narrows from the reflector edge in a stepwise manner. The luminaire together with an axially accommodated light source provides a wide, homogeneous, sharply bounded beam and at small angles with the axis. It is no longer observable as a source of light.

Abstract: A spotlight comprises a light source (14) mounted within an enclosure (11) fitted with a light-transmissive cover (28) which is formed with a central opening (29) above the light source. A clearance space between the light source and the cover allows light from light source (14) to spill over into the enclosure and thereby illuminate the cover from behind. Another enclosure (12) containing control gear (17) for the light source is thermally insulated from enclosure (11) by an air gap (21).

Abstract: The projector-type head lamp assembly comprises a reflector having plural reflection surfaces different in reflection characteristics from each other. The reflector has disposed in the center of the reflection surface thereof a first reflection surface area extended horizontally; adjoiningly at the top and bottom, respectively, of the first reflection surface area a second reflection surface area extended horizontally; and adjoiningly to the second reflection surface areas a third reflection surface area extended horizontally. The reflection surface areas are composed of numerous fine surface elements smoothly continuous to each other.

Abstract: A spotlight comprises a light source (14) mounted within a enclosure (11) fitted with a light-transmissive cover (28) which is formed with a central opening (29) above the light source. A clearance space between the light source and the cover allows light from light source (14) to spill over into the enclosure and thereby illuminate the cover from behind. Another enclosure (12) containing control gear (17) for the light source is thermally insulated from enclosure (11) by an air gap (21).

Abstract: A head lamp for motor vehicle dimming and fog lights having a reflector reflecting beams of a light source to form a light beam directed along a path, a diaphragm with an edge arrangable in the path, an achromatic lens arrangable in the path to portray an image of the edge as a light-dark border of the light beam on a roadway and a correction element arrangable in the path to at least reduce a color fringe otherwise present on the light-dark border of the light beam from chromatic aberration.

Abstract: A motor vehicle headlight whereby the light rays emitted by a rear portion of a lamp, mounted on the focal point of a paraboloid reflector and supported on a lampholder located on the focal axis of the reflector and supported by the same, are intercepted by a collar-shaped dimmer surrounding a lamp portion facing the respective lampholder.

Abstract: A screened vehicular headlight with an ellipsoidal reflector has a source of light positioned in the reflector's first focal area. The headlight has a collecting lens positioned in the path of the rays behind the second focal area and accommodated in a rectangular area of a holder. A screen that produces a light-dark border is positioned between the collecting lens and the reflector and in the focal area of the lens. A transparent cover over the collecting lens has margins extending radially beyond the lens.

Abstract: The invention relates to a main beam unit for a motor vehicle, said unit comprising first and second juxtaposed parabolic main beam headlamps (10, 20). In accordance with the invention, these headlamps are of different aperture diameters and of different focal lengths, with the aperture diameter d.sub.1 of the first headlamp being greater than the aperture diameter d.sub.2 of the second headlamp, and with the focal length f.sub.1 of the first headlamp being greater than the focal length f.sub.2 of the second headlamp.

Abstract: A modulated optical radiation beacon, e.g. a flashing light beacon or an IR emmissive missile jamming source, can comprise a radiation source and two relatively movable apertured masks which, as the apertures thereof move into and out of registration, pass or block the radiation from the source. Herein, to improve the uniformity of the polar distribution of the emitted radiation (assuming, of course, that a uniform distribution is required) or, in other cases, simply to improve efficiency, the apertures of the `inner` mask, i.e. the one nearest the source, are bounded by curved reflective surfaces defining an optical cavity which at least crudely images the source at a position near the outer mask. Advantageously, the optical cavities are defined by a spaced array of prismatic members having appropriately curved facing surfaces.

Abstract: An annular Fresnel lens surrounds a tubular barrel or sleeve containing an objective lens system, which is focussed on an object that is positioned a predetermined distance beyond one end of the barrel. Four independently operable light sources are arranged in equi-angularly spaced relation around the outside of the lens barrel to direct light onto each of four mirrors, which are mounted in intersecting planes around the outside of the lens barrel to reflect light in four quadrants onto the side of the Fresnel lens remote from said object. The Fresnel lens focuses light from the mirrors obliquely onto the object, an image of which is thus projected by the objective lens through the lens barrel toward, for example, a video sensor, which forms part of a video inspection machine.

Abstract: Lighting fixture including an enclosure, means disposed in the enclosure for supplying a central source of light therein, a concave, generally parabolic reflector for directing a main beam of light out of the enclosure from the source generally along a given optical axis, the central source of light being located at the focal region of the concave reflector, the concave reflector having a light penetrable region thereof disposed at least at one side of the optical axis in a horizontal plane in common with the central light source, the light-penetrable region forming an escape window out of the enclosure for part of the light from the source.

Abstract: A lighting device of the free-standing type, capable of diffusing beams of light rays propagating through and emitting from the optical wave guides. A reflecting member is placed opposite the exit end of the optical wave guides to diffusingly reflect and diverge the light rays issuing from the optical wave guides thereby to light up a wide area with soft light rays.

Abstract: A variable magnification "zoom" spotlight assembly is disclosed in which the diameter and focal length of the focusing lens and object lens are selected so that the angle of incidence of a light ray as it emanates from the lamp and reflector of the assembly and thereafter from the focusing and objective lenses decreases by a constant factor. This angular relationship is established by selecting the diameter and focal length of the focusing lens and objective lens and the diameter and length of the reflector according to the following angular relationship:B.sub.R /B.sub.F .congruent.B.sub.1 /B.sub.R .congruent.B.sub.2 /B.sub.1 =kWhere:B.sub.F =angle of the filament to reflector as measured from the focal axis;B.sub.R =angle of gate to reflector as measured from the focal axis;B.sub.1 =angle of focusing lens as measured from its focal length along the focal axis to its radius;B.sub.2 =angle of objective lens as measured from its focal length along the focal axis to its radius; and,k=constant.

Abstract: A "wall wash" assembly for use with a ceiling mounted, recessed lighting fixture comprising a reflector housing having an open end, includes a ring member dimensioned for receipt in the open end of the reflector housing. A concentric ring segment is mounted on the ring member for movement 360.degree. thereabout. An auxiliary reflector is mounted on the ring segment for movement therewith. Positioning of the auxiliary reflector by movement of the ring segment with respect to the ring member provides a desired "wall wash" illumination pattern. An optional baffle member is receivable on the ring member opposite the auxiliary reflector for blocking light emanating from the reflector housing to be excluded in the "wall wash" illumination pattern.

Abstract: A single lighting fixture for mounting in front of a large billboard having a horizontal length approximately two times as long as its vertical length is disclosed. The lighting fixture comprises a lamp housing having a lamp positioned therein with the lamp being approximately horizontally positioned in the housing. A new and novel reflector is positioned on one side of the lamp is designed to reflect the light radiating from the lamp in such a manner that the bottom surface of the reflector is utilized to light up the approximate central portion of the billboard while the sides of the reflector are used to light triangular shaped side corners of the billboard. A refractor is positioned on the lamp housing to totally enclose the lamp with the refractor comprising in part three phase light control prism elements for stray light control.

Abstract: A reflector lamp comprising a concave reflector having a parabolic rear section, a spherical intermediate section, and a faceted parabolic front section, each section having substantially the same common focal point, and a finite light source located at the substantially common focal point. The reflector sections are dimensioned so that substantially all light rays from the finite light source which are reflected by the spherical intermediate section become re-reflected by the faceted parabolic front section. Additionally the light rays, reflected by the facets, include components thereof which are circumferential about a lamp axis and thereby provide a beam pattern which is substantially circumferentially uniform about the lamp axis.

Abstract: An improved optical system for the light point on an illuminated signal or display device having one or more light points. The system comprises one or more light deflectors optically coupled with the light source of the light point and focussing the light passing through the effective aperture of the deflectors towards a focal point or line, respectively, and one or more light shields arranged in the light path and provided with an aperture in the focal point or line whereas a plurality of the deflectors with the corresponding light shields may be arranged in the rows and columns of a display board. The mantle of the light shield frames a hollow in a manner that its mouth is facing the light deflectors and the mantle is under a bevel narrowing towards the aperture of the light shield and the mantle is arranged parallel to and encircling rays departing from the periphery of the effective aperture of the light deflectors and converging into the focal point or line.

Abstract: Methods and apparatus are disclosed for shaping illuminating beams from continuous duty searchlights or the like so as to minimize the effect of backscattered illumination and, to thereby increase the brightness contrast between illuminated target objects and background so as to improve visibility.

Abstract: The flash lamp shield is used with helical xenon flash lamps to shield the radiation from high current density regions adjacent the anode and cathode of the flash lamp. The inventor has found that helical xenon flash lamps including the shield are particularly effective in exposure systems to expose photoresist materials used in semiconductor manufacturing processes.

Abstract: Luminaire for illuminating stacked material along warehouse aisles. The luminaire comprises a high intensity discharge lamp mounted vertically in a reflector having a somewhat flattened bell shape and formed of four reflector segments of somewhat trapezoidal shape arranged symmetrically about the light source, each reflector segment being parabolic in vertical section and elliptical in horizontal section.

Abstract: The present invention relates to a luminaire and more particularly a downlight for industrial lighting applications. Energy considerations, lowered ceiling heights, and greater demand for illumination uniformity has resulted in a demand for a versatile and efficient downlight. The present invention anticipates providing a reflector, lamp, and refractive lens construction which utilizes an incrementally painted reflective surface to provide a versatile spacing between each downlight in an array, using the same basic downlight configuration. The refractive lens includes prismatic refractor elements which reshape the downwardly directed conical beam of light to provide even more uniform illumination when used in conjunction with the plurality of such downlights arrayed in an industrial lighting situation.

Abstract: A compact slit illuminating device for use in a copier or the like, wherein a part of the reflecting surface of the upper reflector, partially encircling a light source, is provided with a function which is the same as that of a lower reflector, to achieve a uniform light distribution over the slit, wherein such reflectors are suitable for use in combination with a compound eye lens of a short conjugate length.

Abstract: A motor vehicle headlight with a reflector consisting of two partial paraboloids arranged one above the other, which have at least approximately a common axis and of which the focus of the upper partial paraboloid is located closer to the apeces of the two partial paraboloids; a first filament for the low beam is located between the two foci of the two partial paraboloids while a second filament for the high beam is located in the focus of the lower partial paraboloid; the light emitted by the high-beam filament in the direction toward the upper partial paraboloid is shielded by a covering arranged on top of the high beam filament.

Abstract: Lighting fixture having a housing with an open side. A lamp is mounted in the housing that is capable of producing light rays which pass through the open side of the housing. A protective covering of glass is carried by the housing and encloses the open side. The protective covering of glass is provided with a surface which has a high angle anti-reflection coating disposed on the surface.

Abstract: A method of altering the photometric output and distribution of a light beam produced by a lamp having a fluted sealed beam lamp lens cover, the light beam having a certain beam shape which, in the absence of the present invention, does not conform to the photometric specifications for auxiliary low beam automobile head lamps; the latter specifications require the lamps to have specific maximum and minimum candela(s) output at various photometric points within the beam pattern.Specific areas of certain flutes molded into the lens cover of a non-conforming sealed beam lamp are partially or totally covered with an opaque material or obstructed by a shield to restrict the candela output of unwanted light at various photometric points within the beam pattern, and thus permit the total beam pattern of the treated lamp to meet state and Federal photometric specifications for auxiliary low beam automobile headlamps.