Reflector Separate From Refractor Patents (Class 362/328)
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Patent number: 4523257Abstract: An artificial light source device includes a light source lamp, a reflection mirror for converting light from the light source lamp into a parallel beam of light, an optical conductor rod having a light-receiving edge surface arranged opposite to the reflection mirror such that the parallel light is guided into the rod, and an optical conductor cable comprising a large number of optical fibers, the light-receiving edge surface of the cable being arranged opposite to the light-discharging edge surface of the rod, the light discharged from the optical fibers being used as the light source.Type: GrantFiled: January 16, 1984Date of Patent: June 11, 1985Inventor: Kei Mori
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Patent number: 4520434Abstract: A diffusion cover for a motor vehicle headlamp comprising upper and lower mutually inclined translucent cover portions are integrally joined together to define therebetween a ridge on an outer surface of the cover and a trough on an inner surface of the cover.Type: GrantFiled: July 28, 1983Date of Patent: May 28, 1985Assignee: Lucas IndustriesInventor: David A. Birt
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Patent number: 4517630Abstract: The optic axis of a vehicle headlight comprises a reflector, an incandescent helix and a convergent lens. The reflection surface of the reflector is parabolic in the horizontal midplane section and is elliptical in vertical median section. A narrow band of light spreading out laterally is thus produced without supplementary optical components, particularly the diffusion disk or dispersion lens. A sharp light-to-dark boundary is obtained by a diaphragm having an effective straight edge 18 located below the outer ellipse focus, which is coincident with that one of the principal foci of the converging lens which is the nearer to the reflector.Type: GrantFiled: November 30, 1982Date of Patent: May 14, 1985Assignee: Robert Bosch GmbHInventors: Rudiger Dieffenbach, Werner Grunwald, Peter Perthus, Friedrich Prinzhausen
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Patent number: 4511955Abstract: A vehicle headlight for providing a shaped beam spreading as a flat bundle. A dish-shaped reflector is employed where the inner reflection surface in the axial longitudinal sections in each case forms an ellipse segment, where the ellipse eccentricity increases from the longitudinal section spanned by the vertical and the reflector axis to the longitudinal section spanned by the horizontal and the reflector axis, where the focal points of the ellipse segments of all sections disposed in planes containing the reflector axis coincide, and where the vertices of the ellipse segments of all sections disposed in planes containing the reflector axis coincide. The depth of the reflector within the longitudinal sections of the reflector containing the reflector axis corresponds to the longer half-axis of the respective ellipse.Type: GrantFiled: May 16, 1983Date of Patent: April 16, 1985Assignee: Westfalische Metall Industrie KG Hueck & Co.Inventors: Hans-Otto Ernst, Wilhelm Rohling
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Patent number: 4506316Abstract: A spot lamp having a lens in the form of a curved member having an inner surface with a series of radially disposed flutes formed therein defining a fluted portion which surrounds a centrally disposed stippled portion. The flutes each extend linearly from a position adjacent the stippled portion outwardly to a position adjacent the outer edge of the curved member. The surfaces of the flutes are also stippled.Type: GrantFiled: August 18, 1983Date of Patent: March 19, 1985Assignee: GTE Products CorporationInventors: William Thiry, Arnold E. Westlund, Jr., Clarence D. Puckett
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Patent number: 4506314Abstract: A submersible lamp having a standardized air impervious housing with a lens formed therein in optical alignment with a bulb carried within the housing. The housing defines a predetermined quantity of air and has an opening at the lower end thereof such that upon submersion in water a limited amount of water is allowed to enter the housing, trapping the air within the housing and preventing the water from rising above a predetermined level. A channel is formed on the rear wall of the lamp housing to receive a bulb and bulb socket support bracket for the selective mounting and positioning of the bulb within the housing in accordance with the function which the lamp is to perform.Type: GrantFiled: September 21, 1983Date of Patent: March 19, 1985Inventor: Dennis G. Moore
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Patent number: 4504889Abstract: Although small enough to fit in a purse, this flashlight operates on six volts using a full-size flashlight bulb and casts a bright and quite-uniform beam of light, primarily for brief uses at relatively short range.The uniformity of the beam is obtained by a novel optical system, that includes an unsilvered, preferably generally parabolic reflector and a beam-narrowing lens. The combination of compactness and brightness is obtained by novel arrangement of the bulb and four penlight cells within the battery case, enhanced by the geometry of the reflector and lens.Type: GrantFiled: December 27, 1983Date of Patent: March 12, 1985Inventor: Adolph E. Goldfarb
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Patent number: 4493013Abstract: A lighting fixture having a dish-shaped chassis which houses lighting elements including tube sockets, transformers, and ancillary electrical components. The chassis is sleeved within a protective, unitary, shatter-proof plastic closure shell having opaque, marginally disposed panel sections and an opaque circumscribing wall assembly integrally formed with and substending a light-transmitting diffuser lens bounded by a transversely extending, integrally-formed light-transmitting frame. The opaque panel sections shield the chassis-housed tube sockets and transformers from view exteriorly of the fixture.Type: GrantFiled: February 14, 1983Date of Patent: January 8, 1985Inventor: Kenneth R. Hawkins
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Patent number: 4484254Abstract: A flood lamp having a lens with a series of concentrically disposed fluted rings on the internal lens surface in combination with an outer concentric ring adjacent to and wider than any one of the fluted rings and containing a plurality of semi-spherical protrusions disposed in an established pattern (e.g., circular or hexagonal). The flood lamp reflector has multiple reflective surfaces including a front section that is parabolic shape having a principle focal point, a spherical section having its center of radius coincident with the principle focal point of the parabolic front section, and a spherical rear section.Type: GrantFiled: May 21, 1982Date of Patent: November 20, 1984Assignee: GTE Products CorporationInventors: Clarence D. Puckett, Arnold E. Westlund, Jr., William G. Thiry
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Patent number: 4479172Abstract: A mirror assembly comprising a shallow dish-like housing containing at least one pair of elongate conductors together defining an electrically-conductive seating for at least one electric lamp to be mounted therebetween within the housing, the conductors extending with the interior of the housing to terminal connectors, whereby connection to an electrical supply externally of the housing can be effected, a frame or bezel detachably secured around the periphery of the housing and defining a first aperture closed by a mirror facing outwardly of the housing and at least one second aperture containing a lens through which light from the or each lamp, when energized, will be so directed as to illuminate a region in front of the mirror. The mirror is spaced from the base of the housing and the rear surface of the mirror.Type: GrantFiled: December 2, 1982Date of Patent: October 23, 1984Inventor: John Connor
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Patent number: 4473872Abstract: A spot lamp having a lens with a series of concentrically disposed fluted rings on the internal lens surface in combination with an outer concentric ring adjacent to and wider than any one of the fluted rings and having a stippled surface. The spot lamp reflector has multiple reflective surfaces including a front section that is parabolic shape having a principle focal point, a spherical section having its center of radius coincident with the principle focal point of the parabolic front section, and a spherical rear section.Type: GrantFiled: May 21, 1982Date of Patent: September 25, 1984Assignee: GTE Products CorporationInventors: Clarence D. Puckett, Arnold E. Westlund, Jr., William G. Thiry
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Patent number: 4471412Abstract: An illumination element having a transparent flexible tube and a fine flexible light conducting member accommodated in the tube. The light conducting member is provided with a number of light outlet sections at spaced locations along its length. Light is incident on at least one end of the light conducting member and caused to break through the light outlet sections while propagating through the light conducting member. The light is available for ornamental lighting or the like.Type: GrantFiled: December 30, 1982Date of Patent: September 11, 1984Inventor: Kei Mori
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Patent number: 4463410Abstract: A lighting device operable with solar beams propagating through and emitting from the optical wave guides. A pair of spaced concave and convex reflecting members are provided to effectively diffuse the solar beams issuing from the exit end of the optical wave guides. One of the reflecting members may be constituted by a mirrored electric bulb in order to ensure the lighting device to operate also by electric power.Type: GrantFiled: June 22, 1981Date of Patent: July 31, 1984Inventor: Kei Mori
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Patent number: 4456948Abstract: A motor vehicle headlamp comprising in combination an optical system for recovering flux having a rectilinear focal segment and an optical system for rectifying images having a focal segment coinciding with the former and able to produce a beam of rays of controlled directivity passing through a narrow light window, while preserving a high luminous efficiency. The flux recovery system is constituted by an elliptical paraboloid, an hyperbolic paraboloid or their optical equivalents. By using various combinations of optical elements, it is possible to arrange the flux recovery system both in the axis of the rays leaving the headlamp, as well as on the side of the body work or on the lower part of the latter.Type: GrantFiled: April 12, 1982Date of Patent: June 26, 1984Assignee: Cibie ProjecteursInventor: Norbert Brun
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Patent number: 4451875Abstract: 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.Type: GrantFiled: March 2, 1982Date of Patent: May 29, 1984Assignee: Manville Service CorporationInventors: John D. Green, Jan Shadwick
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Patent number: 4441141Abstract: A light reflector unit (12) for use with a photographic camera (10) for reflecting light from a light source (13), such as a flash gun, towards the subject to be photographed, the unit (12) comprising a hollow casing (15) having a window (16) for admitting light from the light source (13) into the casing (15), means (28) within the casing 15 for splitting the admitted light and for condensing the split light into separate beams of light, reflective surfaces (26) within the casing (15) for deflecting each beam of light to one of a plurality of windows (18) located such that when the reflector unit (12) is positioned on a camera (10) they face in the same direction as the lens of the lens unit (11) of the camera (10) and are disposed at discrete locations around the lens unit (11).Type: GrantFiled: May 24, 1982Date of Patent: April 3, 1984Inventor: Anthony T. S. Lo
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Patent number: 4432045Abstract: A transparent shallow gently bulging substantially spherical segmental shield formed of polycarbonate resin protects a planar lens mounted in an aperture in a door of a conventional low profile streetlight. The shield shell is generally of the shape of a convex spherical segment with an altitude between one-eighth and one-fourth of the length of its base chord and has an external marginal flange. The curvature of the shell may be sharper adjacent to its margin than at its center. The shell may include a vent aperture to drain condensate liquid from the interior of the streetlight.Type: GrantFiled: April 12, 1982Date of Patent: February 14, 1984Inventor: William H. Merritt
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Patent number: 4432039Abstract: A light transmitting system for an automobile headlamp having a real light source, means for a light channel and an elliptical reflector for concentrating the radiation from this source on the end of the light channel provided with a plurality of reflecting facets. The light channel is formed by a single transparent bar arranged horizontally and transversely with reference to the direction of illumination. The front of the bar is formed as a vertical light output face and the rear of the bar has a series of vertical steps defining a series of oblique vertical reflecting facets thus constituting as many virtual light sources. These facets are arranged in optical co-operation with lenses having axes parallel to the direction of illumination so that these lenses project images corresponding to the facets in the direction of illumination in order to form an assembly of elementary light beams merging into one single beam.Type: GrantFiled: September 30, 1982Date of Patent: February 14, 1984Assignee: Cibie ProjecteursInventor: Pierre Cibie
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Patent number: 4428035Abstract: This invention concerns an electronic flashlight for ophthalmological examination instruments.Type: GrantFiled: November 26, 1982Date of Patent: January 24, 1984Assignee: Carl-Zeiss-StiftungInventors: Ortwin Muller, Albrecht Vogel
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Patent number: 4425608Abstract: 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.Type: GrantFiled: February 8, 1982Date of Patent: January 10, 1984Assignee: Villamos Berendezes es Keszulek MuvekInventors: Gyula Hecker, Erno Kenez, Laszlo Nyari, Janos Patta
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Patent number: 4425604Abstract: An illuminating device for a display unit in which the display panel can be illuminated uniformly under a relatively constant luminous intensity. The illuminating device according to the present invention comprises a display panel, at least one light source and a reflector the inner surface of which is defined by at least two elliptical surfaces. One of two foci of each of the elliptical surfaces is located at the center of the light source and the other of two foci thereof is located on the inner surface of said display panel in order to focus rays of light reflected by the reflector on an area on the display panel away from the light source.Type: GrantFiled: November 26, 1982Date of Patent: January 10, 1984Assignee: Nissan Motor Company, LimitedInventors: Hiroshi Imai, Fukashi Sugasawa
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Patent number: 4410932Abstract: A table, wall, ceiling or desk lamp is provided with a translucent plastic shade having a top reflector at its upper end and bonded at its lower end to the outer periphery of a prismatic diffuser whereby the shade, top reflector and diffuser may be removed as a unit.Type: GrantFiled: June 11, 1981Date of Patent: October 18, 1983Assignee: Keystone Lamp Mfg. CorporationInventor: Joseph Oster
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Patent number: 4408266Abstract: This invention relates to a threshold and approach semi-flush light of the type which utilizes a high intensity lamp surrounded by a reflector which concentrates the light emitting from the lamp on a mirror located above the lamp. The mirror reflects the light through a prism in a predetermined pattern. The reflector comprises a pair of ellipsoidal surfaces of differing eccentricities joined together to form a composite reflector, such that the ellipsoidal section nearest the lamp filament has an eccentricity greater than the second ellipsoidal section spaced a greater distance away from the lamp filament.Type: GrantFiled: April 9, 1981Date of Patent: October 4, 1983Inventor: Ermes Sclippa
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Patent number: 4390930Abstract: A long, linear indirect lighting fixture of a relatively small cross-sectional dimension which is mounted above eye level is comprised of lamps secured within an elongated housing, and a reflector and side lenses which direct and refract the greatest portion of luminous flux from the lamps above the horizontal plane of the fixture, yet a small portion of the luminous flux below but near the horizontal plane. The portion of light directed below but near the horizontal plane, which is controlled by, among other things, the relative placement of the lens and lamps, is great enough for an individual to have a perception of seeing a light source but small enough to avoid discomfort produced by glare.Type: GrantFiled: April 15, 1981Date of Patent: June 28, 1983Assignee: Herst Lighting Co.Inventors: Douglas J. Herst, Peter Y. Y. Ngai
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Patent number: 4383290Abstract: A signal lamp is disclosed for use in automotive vehicles. The lamp includes a housing, a reflector for producing parallel rays, a lens closing the housing in the direction of light exit and diaphragms mounted behind the lens. The outside of the lens is provided with non-reflecting or weakly reflecting transverse stripes to avoid undesired reflections. In one advantageous embodiment, the diaphragms are positioned only in an upper portion of the lamp.Type: GrantFiled: June 30, 1980Date of Patent: May 10, 1983Assignee: ITT Industries Inc.Inventors: Helmut Binder, Gerhard Haar, Eckhardt Schmid, Hans-Joachim Wirth
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Patent number: 4369488Abstract: In a vehicle headlamp, a light deflecting system is provided which comprises two plate-like transparent deflecting elements. Each element has a series of parallel fibs, and the elements are movable one relative to the other at right angles to the length of the ribs. The profiles of the ribs are so chosen that, in a neutral position of the deflecting elements, each rib on one deflecting element faces a rib of complementary shape on the other deflecting element, so that the system imposes no net deflection on light rays passing through. To produce a deflection of these rays, the deflecting elements are shifted relative to the other, so that then, the deflection suffered by the light in passing through one deflecting element is not wholly cancelled by the deflection suffered in passing through the other deflecting element; by suitable choice of the profile of the ribs, the net deflection is the same for all the deflected rays.Type: GrantFiled: September 29, 1980Date of Patent: January 18, 1983Assignee: Cibie ProjecteursInventor: Norbert Brun
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Patent number: 4367519Abstract: Optical elements for vessel navigation lights, providing improved and inexpensive means for achieving uniform, luminous intensity over a sharply bounded horizontal arc of visibility, and also for achieving a desired vertical arc of visibility, comprise means for projecting light from a diffuse source or an array or mosaic of point sources into a field the horizontal and vertical arcs of which can be precisely defined. The disclosure encompasses two geometric configurations for projecting light, symmetrical and asymmetrical, compound parabolic concentrators, each of which may be constructed as either a reflective cavity or a refractive dielectric, thereby to provide four basic designs for achieving uniform illumination over various horizontal arcs of visibility. In addition, the disclosure encompasses three modes of diffuse light projection to achieve uniform illumination over various vertical arcs of visibility.Type: GrantFiled: May 15, 1980Date of Patent: January 4, 1983Assignee: Science Applications, Inc.Inventors: Alexander J. Houghton, Thomas M. Knasel
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Patent number: 4347555Abstract: A light source is disposed within a light reflector formed to direct a light beam through an open end of the reflector and light controlling means for projecting a modified light beam from the same reflector.Type: GrantFiled: April 16, 1981Date of Patent: August 31, 1982Inventor: William B. Elmer
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Patent number: 4345303Abstract: A vehicle headlamp is constructed with its reflector and front lens adapted to be fixedly mounted in the bodywork of the vehicle, but incorporates a beam deflecting system, in order that the direction of the beam may nonetheless be adjusted. In one form, the beam deflecting system comprises two Fresnel lenses, mounted face to face in a position to intercept the whole of the headlamp beam, one being equivalent to a diverging lens with cylindrical surfaces, and one being equivalent to a converging lens with cylindrical surfaces. In a neutral position, the effects of the two lenses cancel out, so that no deflection of the beam occurs. One of the lenses is movable in translation away from the neutral position, so that a deflection of the beam occurs, without any other change in the beam pattern. In modified embodiments, the stationary Fresnel lens is not used; instead, its effect is produced by using a reflector of modified shape.Type: GrantFiled: September 29, 1980Date of Patent: August 17, 1982Assignee: Cibie ProjecteursInventors: Roland Gerard, Norbert Brun, Jacques Ricard
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Patent number: 4329738Abstract: A cover for lights, especially automobile lights, wherein at least a part of the cover which is located within a flat area of a reflector opening of the light when the cover is installed is provided with a number of individual sections. The sections are staggered in a stepwise fashion within a plane which is horizontal in the installed position and/or in a vertical plane with the sections extending in a direction opposite to an intended direction of travel of the atuomobile.Type: GrantFiled: February 25, 1980Date of Patent: May 11, 1982Assignee: Daimler-Benz AktiengesellschaftInventors: Werner Heinz, Adolf Schmidt, Arno Jambor
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Patent number: 4234912Abstract: A luminaire for roadway lighting using a one-piece reflector developing at least two collimated beams in each longitudinal direction. The collimated beams impinge on sloping faces of a refractor to diverge the beams into a regular pattern covering the street with a sharp cutoff at predetermined longitudinal distances from the luminaire. The refractor employs a compressed parabola comprised of radial sections of comparatively large focal length with steps and risers. The complex shape of the one-piece reflector may readily be produced by a reflector finish applied to a molded plastic matrix. In the luminaire, the prismatic surfaces of the inclined walls of the refractor diverge the formerly collimated beams in a carefully controlled manner to produce very uniform distribution of light.Type: GrantFiled: June 28, 1978Date of Patent: November 18, 1980Assignee: International Telephone and Telegraph CorporationInventors: Jocelyn T. Barnes, Chester A. Hard, III, Billy L. Shelby, Charles H. Loch
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Patent number: 4209825Abstract: A lamp having a treated lense for reducing peripheral glare thereby making the lamp useful as a driving light, fog light or spotlight. The treated lense is provided with opaque pigment around the periphery of the lense and the center portion thereof to form elliptical shaped aperture for more acutely defining the desired beam pattern.Type: GrantFiled: December 27, 1977Date of Patent: June 24, 1980Assignee: Optronics, Inc.Inventor: John T. Shackelford
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Patent number: 4206494Abstract: A relatively high percentage of the light given off by a source lamp is gathered by four collector lens systems disposed around the lamp. The desired wavelength components of the light gathered by each lens system are directed by a dichroic mirror toward the system axis and into a respective focusing lens system, while longer wavelengths are transmitted by each mirror to a heat sink. The light from each focusing lens system is directed to the entrance face of a respective sub-bundle of a fiber optic combining system. The entrance face of each sub-bundle is inclined off axis to receive the incident light. The sub-bundles then bend and join each other in alignment with the system axis to transmit the combined light to a single exit face.Type: GrantFiled: September 5, 1978Date of Patent: June 3, 1980Assignee: GCA CorporationInventor: Howard B. Lovering
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Patent number: 4204269Abstract: A photographic camera of the type which is adapted to utilize an artificial lighting assembly, e.g. a flashcube, for illuminating a scene to be photographed is provided with an optical element for intercepting light rays from the artificial lighting assembly to change its light distribution in a manner whereby the distribution of the intensity of illumination falling on the scene is made more uniform than it would otherwise be absent the optical element.Type: GrantFiled: December 27, 1977Date of Patent: May 20, 1980Assignee: Polaroid CorporationInventor: William T. Plummer
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Patent number: 4177505Abstract: The present invention relates to an indicator light, particularly for an automobile, comprising a catadioptric element such that its position in the light and the preferred orientation of certain of its catadioptric prisms allow a zone adjacent the zone normally imposed by the geometry of the light to be illuminated. The invention is more particularly applied to the corner lights of automobiles.Type: GrantFiled: December 19, 1977Date of Patent: December 4, 1979Assignee: Cibie ProjecteursInventor: Pierre Carel
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Patent number: 4172273Abstract: A prismatic protective shield for each flash-lamp and reflector combination as arrays of parallel prisms in order to level the light distribution with a tendency to produce an intensity dip at the pattern center. Arrays of horizontal prisms occupy a central vertical stripe of the shield plane. Arrays of vertical prisms are at each side of the horizontal prisms.Type: GrantFiled: December 5, 1977Date of Patent: October 23, 1979Assignee: Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbHInventors: Werner Schilling, Hans Reiber
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Patent number: 4158222Abstract: A limited visibility signal device is disclosed which includes a housing, a source of illumination within the housing, a light directing lens at the outer end of the housing, and a light collimating arrangement between the source of illumination and light directing lens to intensify and directionally control light delivered to the light directing lens. The light directing lens includes an inner side provided with parallel lenticular elements extending thereacross and having first outer surface portions parallel to the lens axis and second outer surface portions of circular contour. The light directing lens further includes an outer side provided with parallel adjacent lenticular elements extending thereacross perpendicular to the elements on the inner side of the lens and alternate ones of which are of convex and concave contour with respect to the lens axis.Type: GrantFiled: September 26, 1977Date of Patent: June 12, 1979Assignee: Gulf & Western Industries, Inc.Inventor: Richard D. Cook
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Patent number: 4141058Abstract: A light diffusing device for obtaining a surface uniform in the brightness by using a luminous flux narrow in the radiating angle comprising a flat smooth transparent base plate having a favorable transparency and including a luminous flux incident area defined on one side surface, a conical concavity formed on the other side surface opposed to said one side surface, aligned with the luminous flux incident area and having a bottom area at least equal to said area and light diffusing reflecting means provided on all the side surfaces except the above mentioned other side surface. Said luminous flux incident area is used as a connecting part with the end portion of a light guide or a containing section for a light source. The above mentioned other side surface serves as a displaying surface for such display medium as of words or signs or as a luminous surface for introducing lights of a uniform brightness into a plurality of light guides.Type: GrantFiled: May 17, 1977Date of Patent: February 20, 1979Assignee: Copal Company LimitedInventors: Yukio Mizohata, Noribumi Tachihara
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Patent number: 4088883Abstract: A luminaire having an aperture provides first and second zonal illumination areas. A reflector is disposed about a light source for reflecting a first portion of light emitted from the light source through a first zone of the aperture. A deviator is disposed within the reflector for permitting passage of the first portion of light and for directing a second portion of light emitted from the light source through a second zone of the aperture.Type: GrantFiled: May 27, 1977Date of Patent: May 9, 1978Assignee: Bausch & Lomb IncorporatedInventor: Thomas W. Dey