Abstract: A lighting fixture for overhead mounting to produce a generally-rectangular, outwardly and downwardly directed light illumination over a broad areal expanse. The fixture includes a pair of back-to-back arranged reflectors depending from a supporting overhead housing and defining arcuate, generally-parabolic sections flaring outwardly horizontally of one another from opposite sides of a lamp of the fixture. A refractor of polymeric organic composition overlying and protectively capping the lamp and the reflectors diffuses, distributes and directs illumination from the lamp, from the parabolic reflectors and from a reflector plate located above the reflectors to provide an expansive, essentially rectangular-beam light pattern of uniform illumination. Physically faceted upper sections constituting flattened areas of the parabolic reflectors enhance the distribution of light to ensure more even illumination patterns and eliminate "dark" zones.

Abstract: A reflector for a fluorescent fixture having an elongate generally cylindrically concave inner surface defining a cavity shaped so that all portions of a fluorescent lamp along the reflectivity axis are within the cavity. The inner surface of the reflector includes a specularly reflective major central portion that reflects a major portion of light emitted from the lamp generally normal to an imaginary plane across an outlet side of the cavity to illuminate an area beneath the fixture, and opposite reflective signal portions adjacent opposite sides of the reflector that each direct a minor portion of the light emitted by the lamp across the open side of the cavity and past the opposite edge of the inner surface to indicate to persons spaced from the illuminated area that the fluorescent lamp is emitting light.

Abstract: A photographic flash device includes a bar-like flash discharge tube for emitting light, and a reflector having a rectangular-shaped opening for irradiating light beams emitted from the flash discharge tube toward and through the rectangular-shaped opening. The dimension of the depth of opposing side wall portions of the reflector for reflecting light beams along the long side of the opening of the flash discharge tube is longer than that of an inner part of the reflector whose cross section is a curved surface nearly substantially semi-elliptical in shape, which cross section covers the flash discharge tube. Light beams directed beyond an angle of view are reflected by the elongated opposing side wall portions so that they are kept within the angle of view. The opposing extreme edge portions of the upper and lower reflection plates along the long side of the opening of the reflector are extended toward the front by means of parallel flat reflection plates whose inner surfaces are reflective.

Abstract: A visual signaling device which has a horizontally extending lamp which is connected to an electrical housing and which is surrounded by a reflector body. The reflector body has a pair of oppositely extending horizontal parabolic troughs and a downwardly extending horizontal trough. Each trough has an input opening adjacent the lamp, an output end opening, and a front opening. Each trough is defined by a generally planar back wall and a pair of opposed side walls. Each side wall is horizontal from the back wall to the front opening and parabolic relative to the central longitudinal axis of the lamp from the input opening to the output end opening. In a second embodiment of the invention, the reflector has an upwardly extending parabolic trough.

Abstract: A lamp for a motor vehicle has a light source and a reflector for reflecting light rays generated by the light source. The reflector has a body formed at least partially by rotation of a parabolic generatrice by a predetermined angle about a focal point of the reflector. The lamp includes a diffusing plate that covers the light exit aperture of the reflector and directs light rays emitted from the reflector substantially parallel to the optical axis of the reflector.

Abstract: A luminaire of the indirect lighting type includes an indirect light fixture amplification reflector system consisting of plural opposed compound asymmetric reflectors mounted on a common longitudinal axis and used in combination with each other to produce a uniformly enlarged singular light distribution pattern when directed towards a secondary reflective surface such as the ceiling of an interior room cavity. The reflector functions to distribute the light pattern in a primarily outward rather than upward manner thereby reducing the number of luminaries required for efficient illumination. The reflector shape prevents direct exposure of the lamp source to the secondary surface thereby decreasing the mounting distance required between the luminaire and the secondary surface being illuminated, as well as providing for a more even illumination and the widest possible spacing ratio between luminaries.

Abstract: An illuminated sign system, e.g., an illuminated canopy or roof ridge for petrol stations and the like, comprising a trough with one or more electrical fluorescent tubes partially covered by a light shield having areas of differing light transmissivity, e.g., filters or translucent areas, with reflecting screens in oblique position in the rear, optionally colored to reflect light of one or more selected colors, and a front side of transparent weather-proof material covered with translucent colored indicia.

Abstract: This invention produces a spot beam or a broad beam having no unilluminated regions within the beam. In one case, the size of the beam is established by the relative position of the light bulb and a uniquely shaped reflector. The apparaent brightness of the beam is established by oscillating the beam in a controlled fashion. In another case, both the size of the beam and the apparent brightness are established by oscillating the beam in a controlled fashion. The result of this invention is a spot beam that can be made into a broad beam without the dark regions that result from the existing adjustment techniques and also a broad beam having an apparent brightness greater than that attainable by other techniques.

Abstract: A bowl-shaped reflector for a vehicle headlight produced by a casting process has a flattened section which extends to its outer edge. Grovoes are formed on an interior side of the flattened section which are elongated substantially in the direction of an optical axis of the headlight. The breadth and depth dimensions of the grooves are related to one another, and side surfaces defining the grooves have surface shapes such that, light rays falling directly in the grooves from a dim-light filament of a bulb mounted in the reflector are reflected a plurality of times on wall surfaces defining the grooves.

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: An outdoor lighting system utilizing reflectors capable of producing a uniform distribution of light over a large area. The system reflectors employ parabolic reflecting surfaces utilizing a plurality of adjacent small concave and convex configurations for distributing the light in a uniform manner with a minimum of spillage, and a single reflector may employ three separate types of reflecting configurations to achieve the desired result at variable distances from the light source.

Abstract: Fluorescent lighting apparatus utilizing a single elongated tubular light source replaces the multiple fluorescent tubular light sources of conventional or prior art fluorescent lighting apparatus. A substantial part of the light output of the fluorescent tubular light source is reflected by an improved reflector construction having multiple elongated strip-like mirror surfaces. A simplied, less expensive, more efficient apparatus is disclosed wherein the improved reflector forms the principal part of the apparatus and is provided with a compact raceway for the current carrying wires along with a remotely situated ballast in a compact enclosure which facilitates the adaptation of the improved apparatus to surface mounting on ceilings as well as recessed mounting of the fluorescent apparatus in suspended ceilings and the like.

Abstract: A rigid lightweight fluroescent lighting fixture using a single elongated tubular light source and an elongated lightweight improved reflector construction having multiple elongated strip-like planar mirror surfaces is disclosed. The lightweight reflector construction is positioned between double walled end panels which are in turn connected to one another by a double walled elongated box-like structure formed of two elongated inter-engaging body members. Lamp holders of appropriate configuration are slidably mounted in slotted brackets formed on the double walled end panels so as to support an elongated fluorescent tube. The simply formed inexpensive fixture efficiently positions the improved reflector structure and the fluorescent tube on a suspended ceiling or the like and adds very little weight to the supporting structure.

Abstract: A lamp including a reflector and a light source for illuminating a target area in which the light rays on the target and have a small average local divergence. The reflector and light source are configured so that the predominant portion of the light rays which strike the target area do not cross the axis of the reflector. The reflector may be segmented and the light source is located so that various points on the target receive radiation which is reflected from a different number of segments with points near the periphery of the target area receiving radiation from a greater number of segments than those near the center of the target.

Abstract: A method and apparatus is disclosed to produce a blown glass envelope on a ribbon machine having a self supporting closed end, said article being of a unitary, integral construction with glass wall thickness substantially less than that found in conventional pressed glass envelope. Said ribbon formed glass envelope has a cylindrical neck portion terminating at one end in a bulb portion of larger cross sectional dimensions and which includes the self supporting base end. The sides of said glass envelope can be curved or flat and with said self supporting base also being of a curved or planar contour. A novel mold construction permitting said glass envelope to be blown on a ribbon machine comprises a pair of cooperative halves forming the sides of the blown glass envelope in a central cavity in which further includes a separate base part located at the lower end of the said cavity to shape the self supporting base, said base part of the mold being provided with reciprocal motion in a vertical direction.

Abstract: An improved plastic reflector member for a parabolic aluminized reflector (PAR) lamp is disclosed and, in particular, the use of said improved plastic reflector member for an all plastic PAR lamp or a PAR lamp which uses said improved reflector member. Said improved plastic reflector member utilizes a variable thickness wall member to form the parabolic shaped cavity wherein the wall thickness of its planar walls is sufficiently greater in the rim sealing region than in the adjoining wall region of said parabolic cavity to avoid mechanical and heat distortion.

Abstract: The system for producing non-blinding light from a fluorescent tube comprises a discharge lamp of which the cross-section area has the shape of an equilateral triangle with round edges. Through the invention not only is energy saved, but glaring light is made impossible, thus minimizing dazzling.

Abstract: A lighting fixture having a trough-type reflector and further having planar end reflectors, such fixture also including at least one planar shield parallel to the long axis of the trough-type reflector and having an edge parallel to the aiming axis of the fixture. The shield is undercut to permit light emanations from the lamp to be reflected from the entire trough-type reflector. The shield also includes depending points at the points of contact with the end reflectors, thereby preventing light from being reflected from the end reflectors outside of the shield.

Abstract: A vehicle lamp, such as a headlamp or fog lamp, having a concave reflector truncated at its top and bottom, one of the truncated surfaces being closer to the optical axis than the other truncated surface, and both truncated surfaces being substantially non-reflective. This achieves significant glare control without requiring a separate shield between the light source and the reflector.

Abstract: A reflector for use with a light source in which the light source is shielded from direct view. The reflector provides even illumination, with high efficiency by reflecting light from the light source around the light source rather than to be blocked thereby.

Abstract: A lighting unit for indirect illumination of an area. The unit has a reflective surface contoured to direct reflected light rays from a source generally upward at predetermined angles for reflection by a surface above the lighting unit providing a symmetrical lighting pattern over the area to be illuminated. The reflective surface is contoured so as to eliminate glare interference to the area to be illuminated by controlling the angle of emanation of the light rays from the lighting unit.

Abstract: 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.

Abstract: A shadow-free lamp assembly comprises a plurality of plane mirror segments disposed on a basic paraboloidal reflecting surface, and a linear light source. Each of the plane mirror segments has a length of the short span of the paraboloidal reflecting surface as its long side and is continuously disposed next to each other along the long span of the paraboloidal reflecting surface and the light source is disposed in reflecting direction forward from the focus of the paraboloidal reflecting surface, whereby all mirror segments reflect light from the light source to produce irradiation patterns illuminating the single illumination area. Because of the overlapped illumination by the plurality of the mirror segments, shadow is not produced on the illumination area when reflected light is partially intercepted.

Abstract: A light fixture having a reflector for directing light beams generally in a first direction, such as an indirect lighting reflector, which has a tab that is partially punched out and bent to reflect a restricted spot of light in an opposite direction. This permits the highlighting or illumination of an area on the back side of the reflector without extra bulbs and without ugly add-on reflectors.

Abstract: In a lighting fixture louver assembly in which a plurality of louvers with side walls joined at their lower edges by a closed bottom, generally V-shaped in end elevation, are connected to side or end rails, an extension is provided of the lower portion of the louvers, projecting beyond a contiguous upper portion of the ends of the side walls, and cut wings are formed in the extension. The rails have a slot in a side wall extending upwardly from immediately adjacent the bottom edge of the wall and of a size to receive the extension. The extension projects through the slot, and the wings are bent outwardly laterally along a line substantially parallel to the long axis of the louver, a cut surface of each of the wings engaging the back surface of the side wall, whereby the closed bottom of the louver projects uninterruptedly through the side wall of the rail.

Abstract: 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.

Abstract: A lighting unit for indirect illumination of an area. The unit has first and second reflective surfaces contoured to direct reflected light rays from a source generally upward at predetermined angles for reflection by a surface above the lighting unit providing a symmetrical substantially uniform intensity of light over the area to be illuminated. The lighting unit may have cut-off baffles for redirecting the light rays away from nearby or adjacent vertical surfaces providing an asymmetrical substantially uniform intensity of light over the area to be illuminated.

Abstract: An outdoor luminaire having a reflector adapted to provide uniform illumination of a relatively large, generally level surface. The reflector is comprised of a pair of side segments and contiguous concave top and bottom segments surrounding a light center. The top segment includes three cylindrical portions which are circular in section, the portion adjacent the top edge having its circular center well in front of the light center, while the other two circular cylindrical portions have their centers behind the light center. The bottom segment includes a transient portion and a cylindrical portion which is parabolic in section. The parabolic cylindrical portion is adjacent the bottom edge and has its foci at the light center. The side segments are tilted to reflect light from the light center directly out of the luminaire.

Abstract: An improved plastic reflector member for a parabolic aluminized reflector (PAR) lamp is disclosed and, in particular, the use of said improved plastic reflector member for an all plastic PAR lamp or a PAR lamp which uses said improved reflector member. Said improved plastic reflector member utilizes a variable thickness wall member to form the parabolic shaped cavity wherein the wall thickness of its planar walls is sufficiently greater in the rim sealing region than in the adjoining wall region of said parabolic cavity to avoid mechanical and heat distortion.

Abstract: Lighting apparatus having less than the conventional number of light sources, but which provides illumination substantially equivalent to the illumination provided by the conventional apparatus, thereby providing savings in energy consumption and in cost of operation. Part of the light output of the light sources which are provided is reflected to illuminate areas of the diffuser plate which are illuminated by additional light sources in conventional apparatus, whereby it appears that a full number of light sources are provided when in fact less than a full number of light sources are provided.

Abstract: A lighting facility which includes spaced parallel end plates having a light assembly extending therebetween. A flexible cover extends between and is supported by the end plates so as to be rotatable entirely about the light assembly.

Abstract: An annular illuminator comprising a spheric mirror, an elliptic mirror and a circular cylindric mirror. Flux received directly from the source is reflected by the elliptic mirror and then by the cylindric mirror. Flux not directed initially toward the elliptic mirror is first reflected by the spheric mirror and then by the elliptic and cylindric mirrors.

Abstract: A light reflector system for an elongated light source and having multiple reflective surfaces, some of which are treated for diffusing light, particularly those surfaces that reflect light at low reflective angles, and some of which are specular or, alternatively, treated for light spread reflection, particularly those surfaces that reflect the image of the lamp source at high reflective angles.

Abstract: Apparatus for producing ultraviolet radiation, particularly a quick-tanning or therapeutic sunlamp, has a source of substantially uniform ultraviolet radiation, including at least two closely adjacent tubular low-pressure mercury lamps; an arrangement for intercepting at least the major percentage of wavelength bands of ultraviolet radiation below approximately 300 mm; and a reflector system cooperating with said source and defining at least one opening for the escape of ultraviolet radiation consisting essentially of the remaining wavelength band of ultraviolet radiation, said reflector system including for each of said lamps a trough-shaped reflector surrounding the lamp along an arc, and at least one intermediate portion between adjacent ones of said lamps and two lateral portions having zones which project forwardly of said intermediate portion and have forward edge portions defining said opening, the space between said lateral portions and forwardly of said intermediate portion being substantially unobst

Abstract: An open-ended reflector for being positioned within a camera to provide a controlled pattern of light on a rectangular subject field located at a distance, e.g., five feet, from the camera. The reflector includes three specular reflective surfaces and a fourth surface having a ribbed diffusing region thereon. These four surfaces are oriented in such a manner that the mechanical axis through the reflector's open end will be offset from the reflector's optical axis when viewed from in front of the reflector.

Abstract: Lighting equipment includes three distinct spaced, parallel mounting structures held together by sheet metal in a preferably box-shaped configuration. Two outer ones of these mounting structures each include a profile having a wall thickness greater than the thickness of the sheet metal and an interior configuration corresponding to an exterior configuration of each of two arms of a lamp to be mounted relative to a pole. The central one of the mentioned elongate mounting structures has a profile including combined first, second and third walls, each of which has a thickness greater than the mentioned sheet metal thickness. The third wall is centrally located and carries a tapered-bore or other structure for connection to the pole on which the lamp is to be mounted.

Abstract: An optical louver luminaire having at least three stacked reflector members each of which is at least in part a surface of revolution, all centered on a common vertical axis. Each reflector has a central opening to receive a light source. The light source has a region of major luminance with an upper end and a lower end. The lower one of the reflector members cuts off light from the upper end of the region to determine the lower-most vertical angle of direct illumination, and others of the reflector members determine the cut-off angle of the greatest vertical angle. The optical luminaire casts a combination of doubly reflected and directly transmitted light to produce a light distribution on the ground with intensities that increase as the vertical angle increases to a pre-determined angle. If desired, parts of the reflector members may be replaced by asymmetrical reflector members to provide for asymmetrical light distribution.

Abstract: Illumination apparatus provides for uniform illumination of a planar original by use of a single flash lamp. A pair of parabolic reflectors partially surround the lamp and direct two separate collimated bundles of light toward opposite sides of the original. A planar reflector positioned in the path of each collimated bundle of light intercepts and reflects the collimated light rays upon the original to uniformly illuminate the original from opposite sides.

Abstract: A camera-mounted illuminating device particularly useful for motion picture photography to provide relatively constant lighting of close-up scenes in motion pictures despite movement of the camera toward and away from the scene.

Abstract: A lamp assembly has a reflector body formed of an injection moulded, low profile, thermoset polyester moulding composition with an integral sleeve having a stop internally of the body. A tubular bulbholder has an external flange engaging against the stop and carries a bulb. The reflector body has upper and lower paraboloidal portions of different focal length joined together by a step facing the lower paraboloidal portion. The step decreases in width inwardly from the periphery of the reflector body. The lower paraboloidal portion has a greater focal length than the upper paraboloidal portion which projects forwardly away from the rear of the reflector body to a greater extent than the lower paraboloidal portion. A mounting flange around the reflector body has a planar surface against which a lens element engages. The mounting flange is disposed between shield and the rear of the reflector body.