Abstract: A motor vehicle headlight having a reflecting body which consists of a paraboloid of translation with inclined lateral end walls characterized by the fact that a spherical reflector is formed centrally on the paraboloid. A condensing lens is located ahead of the light source and a diaphragm is situated between the light source and condensing lens. The focus points of the condensing lens and spherical reflector are located between the light source and diaphragm.

Abstract: A first concave mirror collects the light emitted by a light source in a first half space and forms a first image of the light source at a point proximate thereto. A second larger concave mirror opposite the first mirror forms second and third images from the respective source and first image. The second and third images are formed at the input aperture of a non-imaging reflector, which in turn emits the light uniformly through the output aperture thereof.

Abstract: A collimated light source is provided which combines the functions of lamp and integrating sphere into one unit for efficiently coupling radiant energy from a gas discharge to a lightguide. The light source is electrodeless and comprises an integrating sphere coated with a light-reflective material and containing a gaseous fill. To excite a discharge current in the fill, the sphere is encircled by a coupling coil driven by an RF power source, or the sphere is enclosed in a microwave cavity. Light exits from the sphere through a light-transmissive window to a lightguide.

Abstract: A lighting system having a light source is disposed inside the reflective inner surface of a reflector. The longitudinal profile of the reflector is a continuous curve comprised of four substantially circular arcs and a parabolic segment. A first arc lies nearest the source. A second arc having a radius of substantially 1/2 (1+.sqroot.5) times the radius of the first "continues" the first in the sense that the arcs have the same slope at their point of contact. Likewise, a third arc having a radius of substantially 1/2 (1+.sqroot.5) times the radius of the second continues the second arc and a fourth has a radius substantial 1/2 (1+.sqroot.5) times the radius of the third. The parabolic segment continues the fourth arc and completes the profile. Internal and external reflecting means may be provided to further align and direct the exiting light.

Abstract: A lamp reflector includes a light reflecting surface having a transverse cross-section with at least one spiral curve therein beginning behind a light source and curving thereabout with an every increasing radius of curvature. Light striking the spiral curve is reflected around the light source in the direction of the increasing radius of curvature to a location forwardly of the light source. Such a reflector can be adapted for use with light sources of cylindrical, toroidal and spherical shape. The reflector can be adapted for use with a light source enclosed within a transparent or translucent envelope.

Abstract: A reflector for dental and surgical operating room light fixtures exhibits, in a first cutting plane, an elliptic contour. A parabolic contour is exhibited in a second cutting plane vertical to this first cutting plane. The center of the lamp filament is in the common focal point of the ellipse and parabola. A fine light-diffusing structure overlies the light-reflecting surface to improve the uniformity of the light field.

Abstract: A light transmitting device includes an open ended cylindrical body with a light source mounted in the end thereof opposite the open end. A mirror is spaced from the open end, and mounted for rotation about an axis substantially perpendicular to the axis of the cylindrical body, that intersects the axis of the cylindrical body. The cylindrical body may include or be mounted on a pole or other stand. At least one vent may be provided in the cylindrical body open to the gap between the body and the light source. The mirror may be mounted to also be rotatable about the axis of the cylindrical body. The components of the device are easily assembled and disassembled.

Abstract: The reflection surface of the reflector is composed of four segments depending on the low-beam light distribution pattern according to the ECE or SAE standard. For the ECE low-beam light distribution pattern, segment is part of a paraboloid of revolution; segment is a parellipsoid; reflector segment is a parellipsoid; and reflector segment is a general paraboloid. The various segments merge continuously and with smooth transitions with one another. For the SAE low-beam light distribution pattern, the reflector segment is a paraboloid of revolution; the reflector segment is a general paraboloid; the reflector segment is a paraboloid of revolution; and the reflector segment is a general paraboloid; in the SAE low-beam light distribution pattern as well, the reflector segments merge with one another continuously and with smooth transitions.

Abstract: Display system includes an illumination system which utilizes a light collector in the form of a non-imaging reflector having a rectangular output aperture, a modulating device in the path of light emitted by the illumination system, and a projection lens. Three such collectors having spectrally tuned lamps therein and using rectangular LCD's as modulating devices can be used in a television projection system.

Abstract: A light source device has a transparent plate having a smoothened front surface and a roughened rear surface. A light source is disposed adjacent to an end face of the transparent plate. The roughened rear surface has a portion which is inclined and curved and disposed adjacent to the end of the transparent plate remote from the light source. A reflecting plate is disposed adjacent to and extends along the roughened rear surface of the transparent plate. The provision of the inclined and curved surface portion assures that the luminance of the light on the smoothened front surface of the transparent plate is substantially uniform over the entire surface area. The inclined and curved surface portion is represented by the following equation,y=H--(H-h)x.sup.n /L.sup.

Abstract: Mirror lighting unit. To satisfy special demands on the light density distribution, such as are required, for example, by video workstations, use is made of mirror lighting units, which, in addition to longitudinal mirrors provided on both sides of a lamp, have louvre vanes of double-parabola-shaped cross-section arranged transverse to the extent of the lamp on the side where the light is emitted, and which are aligned relative to the lamp with the base side of their cross-section. In order to keep as low as possible the emission losses occasioned by such louvre vanes, the louvre vanes are provided on their base side with reflecting covers, which can, however, cause the image of the lamp which they reflect to emerge via further reflections on the longitudinal mirrors at an angle of emission which destroys the screening effect required of such lighting units.

Abstract: An automotive safety device for reflecting light from a front headlight rearwardly along the sides of the vehicle is in the form of a detachable plastic reflective strip which has one end attached to the center of the headlight and offset therefrom and the other end wrapped around the side of the automobile and attached to a side panel. By adjustment of suction cups front and rear wheels can effectively be illuminated along with other portions of the side of the automobile. Auxiliary safety uses of the reflective strip are also possible. Because it is of thin, flexible material, it can be easily stored away.

Abstract: An area exposure machine for reproduction equipment and comprising an oblong light source (1) and a reflector behind the light source. The reflector is shaped substantially as an involute curve. As a result a uniform exposure of a relatively large area can be achieved, and the distance between the light source (1) and the area to be exposed can be reduced. As reflections towards the light source are avoided the consumption of energy can also be reduced. The reflector is advantageously composed of planar surfaces approximating an involute curve, and each planar surface is advantageously wedge-shaped whereby a more uniform exposure is obtained. The area exposure machine can for instance be used in connection with a contact printing box.

Abstract: A light source for use in traffic signals has a plurality of light bulbs, in which each bulb is used in turn until it burns out, at which time power is switched to an operable bulb. By means of lenses and mirrors in the light source, a substantially identical pattern of light rays is produced regardless of which bulb is lit.

Abstract: The invention is directed to a vehicle headlight including a projection lens secured by a covering disk. No diaphragm is interposed between light source and the projection lens. The lens having the shape of a flat sector of a cylinder with a cut-off apex. An inner lens surface having a uniform curvature and an outer lens surface having a toroidal curvature.

Abstract: A lighting device having a light source L and a reflector R positioned behind the light source is disclosed in which a three-dimensional configuration is given to the reflector R with the aid of the computer so that it can provide a particular reflection pattern to the light reflected by the reflector R. Due to a particular curvature or configuration of the reflecting surface of the reflector R, the light rays emanating from the light source and reflected at any point on the reflecting surface intersect or cut across each other at innumerable different points in space. Further, the reflector is provided with a three-dimensional curvature or shape so that it can give the incident light rays a preselected luminous flux distribution. The lighting device is adapted for application in a variety of uses enabled by its special reflection paths of light rays.

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

Abstract: A 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 luminaire comprises a reflector having a concave interior surface formed with bands of reflective facets. The bands are organized in groups to provide the desired illumination pattern and enable the reflector to be formed in a simple fashion. The groups of facets are organized in bands which extend arcuately around the interior of the reflector, each facet being oriented to reflect light to a desired luminance center on a roadway surface.

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 image processing apparatus is equipped with an original document illuminating lamp, a reflector arranged in association with the lamp and having a color-compensating anodic oxidation coating formed on at least a part of a reflecting surface of the reflector, and a photosensitive member adapted to receive light from an original document upon exposure of the original document to light from the lamp and having an oversensitive range in the spectral sensitivity characteristics thereof. The reflector is made of aluminum or an aluminum alloy. Owing to the provision of the color-compensating anodic oxidation coating, the reflectivity of the reflector to light in a wavelength region corresponding to the oversensitive range of the photosensitive member is smaller than its reflectivity to light in wavelength region other than the first-mentioned wavelength region.

Abstract: An improved fluorescent indirect lighting fixture has its light source concealed from normal view by locating the lamps in a partially wrapped-around region to one side of an offset reflector, which is shaped in a special concave curvature to produce uniform "wall wash" illumination. A producible high quality reflective surface with required curvature maintained by a rigid, accurate reflector assembly is achieved by utilzing a thin flexible reflective lining of high purity aluminum conformally laminated against a rigid extruded aluminum reflector body of required curvature. Two-piece end plates provide lamp socket mountings, integral wiring conduits, reflective inner end surfaces, decorative trim at light-exit window ends and reflector body reinforcement. The complete reflector module including ballasts and a.c.

Abstract: A safety flashlight (30) according to the invention includes a heavy duty magnet (1) secured to a cap (3) in turn connected to a main housing (9). A preferred flashlight (30) also includes a reflector cone (16) arranged to intercept a concentrated beam produced by a light bulb assembly (13) and radially reflect the light to make it noticeable irrespective of the angular orientation of the viewer with respect to the light (30). An electronic flashing circuit (10) is secured within the housing (9) using a synthetic rubber compound which insulates the circuit (10) and makes it less sensitive to shock.

Abstract: A vehicle signal lamp serves to mark the position of the vehicle by emitting light axially relative to the vehicle and also by emitting light sideways relative to the vehicle. Reflector for directing light axially is extended on its inner side by a portion for directing a beam sideways toward the space situated between the free edge of the opposite side of the reflector and the corner region of the closure glass. The refractor elements normally provided on the inside surface of said closure glass are advantageously used to distribute said lateral beam so as to provide the required angular photometry to the side of the vehicle. The invention is particularly applicable to low-profile lamps.

Abstract: This invention relates to a collimated light source for a flat panel liquid crystal display which uses a high intensity light source positioned in an integrating sphere. One or more tapered light pipes have their narrow end(s) positioned in an opening in the integrating sphere. Light from the integrating sphere is internally reflected in the light pipes(s) to produce a relatively collimated output beam which is projected onto one surface of the liquid crystal panel display.This invention relates to a light source for a liquid crystal panel display and, more particularly, to a collimated light source utilizing light pipes and an integrating light sphere.

Abstract: An illuminator, particularly for street lighting and industrial applications, comprising a light source including a gas discharge tube, a closed outer vessel for receiving the gas discharge tube, composed from a rear half part and a front half part for forwarding light of the light source, at least the front half part made of light transparent material, light reflecting means covering partly the inner surface of the rear half part of the outer vessel, mechanical fitting elements and electric connecting means, wherein the front half part and the rear half part both are symmetric to at most two symmetry planes and one of the symmetry planes includes the longitudinal axis of the gas discharge tube and constitutes the symmetry plane of the light emitted by the light source. The proposed illuminator require small place and is hardly subject to contamination originated from the environment.

Abstract: A luminaire includes a housing defining a cavity with an open end. A double acting reflector system is mounted in the cavity that includes a first reflector of a generally concave configuration. A light source is positioned in the upper portion of the cavity. The first reflector is configured to capture a substantial portion of the light emanating from the light source and reflect it downward. The reflector system also includes a second reflector extending down from a lower rear edge of the first reflector. The second reflector is configured to capture a portion of the light projected from the first reflector and reflect it outwardly and downwardly to help form a rectangular lighting pattern on a planar surface. A transparent, nonprismatic lens is included which is secured to the housing to cover the open end. The housing may include an aperture with a removable plug to provide access to the light source for connection of wires and the like.

Abstract: Light fixtures achieve improved efficiency by utilizing a reflective holographic optical element to direct light from a light source to a task area. The light fixture can employ any conventional source of artificial incoherent light positioned relative to the reflective holographic optical element such that the reflected light is collimated to provide efficient illumination of the task area.

Abstract: A luminaire utilizing a source of light which is reflected outwardly from the luminaire by a first and second reflector in side-by-side configuration. The second reflector is also positioned to one side or in surrounding relationship to the source of light. The light from the first reflector is adjusted to reinforce light coming from the second reflector in a predetermined direction.

Abstract: A luminaire comprises a reflector having a concave interior surface formed with bands of reflective facets. The bands are organized in groups to provide the desired illumination pattern and enable the reflector to be formed in a simple fashion. The groups of facets are organized in bands which extend arcuately around the interior of the reflector, each facet being oriented to reflect light to a desired luminance center on a roadway surface.

Abstract: A densitometric head for measuring ink density of prints in a running printing machine includes a light source for transmitting light on the measured surfaces and sensors for receiving the remitted light. To simplify the construction and eliminate heat effects of the light source, the latter is arranged in one focal point of an elliptic reflector whereas the measured surfaces are situated in or close to the other focal point where an image light source is formed from the light reflected in the reflector. A heat protective filter is arranged between the two focal points to eliminate heat effects on the sensor.

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

Abstract: The electrical reflector lamp according to the invention has a blown lamp vessel (1) comprising a light-transmitting part (4) opposite to a neck-shaped part (3). The lamp vessel (1) has a first mirror-coated lamp vessel portion (5), which has a spherically curved part (14) and a paraboloidally curved part (15), and further a second mirror-coated lamp vessel portion (7), which is curved paraboloidally. A paraboloidally curved reflector (8) is arranged in the neck-shaped lamp vessel portion (3). The foci of the paraboloidal parts and the reflector and the center of the spherical part coincide (6). The light source is arranged in a plane (12) through the foci (6) and transversely to the axis of symmetry (2) of the lamp vessel (1). A very large part of the generated light is irradiated by the lamp in a concentrated beam.

Abstract: A light for MIG welders. The light is provided by a low voltage high intensity halogen lamp and parabolic reflector to focus the concentrated light beam on the work area at an intensity comparable to that of the welding arc to provide visibility through the user's shield. The light is provided with a clamp for ready attachment to the welding gun and has an adjustment for shifting the focus with a toggle and spring biased shock resistance. To resist thermal shock a pyrex lens may be employed or a tungsten screen which further resists spatter. Ventilation is provided by openings in the reflector and the tungsten screen.

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

Abstract: When examing visually uneven surfaces the problem is the disappearing of the areas remaining in the shade from the picture. To the lighting device in accordance wiht the invention for illumination of and elimination of shades from uneven surface (1) belong a source of light (2), a mainly globular reflecting contrivance (3), the interior surface of which is equipped with reflecting material, and to which openings (4, 5) for the examining of the surface and holes (6) for conducting of the light into the reflecting contrivance are formed, as well as a reflector element (7) for reflecting of light through the opening (4) into the reflecting contrivance.

Abstract: A roadway luminaire utilizing a source of light which is reflected outwardly from the luminaire by a first and second reflector in side-by-side configuratuion. The second reflector is also positioned to one side of the source of light. The light from the first reflector is adjusted to reinforce light coming from the second reflector in a predetermined direction.

Abstract: A conformable reflector is attached to the exterior surface of a fluorescent lamp tube in such fashion that it may be wrapped closely about the fluorescent lamp during shipping and handling, and upon installation of the fluorescent lamp-reflector system within a lighting fixture, the reflector may be extended to a position separated from the fluorescent lamp tube to form a reflecting surface which focuses the light emitted by the fluorescent lamp in a desired direction. The reflector may be permanently affixed to the fluorescent lamp tube, or may be fastened to the tube by adjustable collars which allow variation in the position of the reflector relative to the lighting fixture as desired by the user.

Abstract: A high efficiency light collection system for a projector such as a light valve projector provides constant tangential magnification for all zones so that the images of the source just fills the pupil of the projection system thereby giving the best source utilization in all zones. The light collection system comprises a reflector (60) behind the source and a correcting refractor (61) in front of the source. The preferred embodiment uses an aconic reflector having continuously changing zonal focus with a single asphere corrector lens that has exactly compensating zonal focus characteristics. It is also possible to use a conic reflector, but this requires two asphere corrector lenses in order to provide the constant tangential magnification characteristics.

Abstract: An illuminating system for generating a high-intensity illuminating light utilizing a lamp of short arc type is equipped with a cooling device capable of effectively cooling the arc lamp and the reflecting optical members with an extremely simple structure. The illuminating system comprises a lamp emitting illuminating light of a high intensity; a reflecting optical member provided with a reflecting face surrounding the lamp and further provided at an end with a window for transmitting the light from the reflecting face and at the other end with an aperture for passing a part of the lamp; a casing integrally housing the reflecting optical member and the lamp and provided with a ventilating hole in a part of the casing for communication with the exterior; and air guide means for connecting the ventilating hole with an air path connecting the light transmitting window of the reflecting optical member with the aperture thereof.

Abstract: A display incorporating light-emitting diodes, comprising a reflector which is formed in a holder. A light-emitting diode is mounted in the holder and projects into the reflector through an opening. The light-emitting diode is attached in the opening with the diode walls snugly abutting against the edges of the opening. The invention also relates to a method of manufacturing the display comprising light-emitting diodes and an installation to perform the method. Each diode is provided with two connections protected by the holder. The holder consists of surface-treated sheet metal, preferably anodized aluminum. The reflector is bowl-shaped and semispherical. Owing to the reflector a bundle of aligned beams of light is emitted from the light-emitting diode.

Abstract: An infrared floodlight assembly designed particularly for security purposes and including a heat-conducting housing, a lens secured to the housing to provide a closure therefor, and a floodlight located within (and surrounded by) the housing. The floodlight combines the use of a tungsten halogen light source and dichroic hot and cold mirrors for directing substantially only infrared radiation toward the assembly's forward lens. Visible radiation is absorbed by the housing's interior wall(s) and, optionally, by a filter located between the floodlight and lens. An optional means may be used within the floodlight to reflect all forward radiation back toward the paraboloidal hot mirror or, alternatively, to reflect only visible radiation in this direction. The dichroic hot and cold mirrors preferably each comprise a glass substrate having multiple layers of titanium dioxide and silicon dioxide thereon.

Abstract: An item of apparel is disclosed that can be worn on various parts of the body such as the ankle, the arm, the wrist or the like comprising a fabric sleeve having Velcro at its ends so that it can be formed into a loop embracing the user's limb. A series of light-emitting diodes are mounted on the sleeve and connected to a battery powered circuit having a mercury switch so that the diodes are illuminated depending upon the position of the user's limb. Each diode is mounted in a reflector that magnifies the diode's illumination.

Abstract: An examining or viewing device such as a laryngoscope having improved optical coupling between a light source and a light receiving face of a light conductor. The light source is provided with a reflector preferably ellipsoidal in shape which concentrates the light reflected into a converging conically shaped light beam which fall essentially in its entirety onto the light receiving surface of the light conductor.

Abstract: The invention relates to a headlamp with adjustable reflector for motor vehicles, comprising a housing mounted on the body of the vehicle and a cover disc which is attached to the housing by means of a groove-rib connection, also a reflector arranged in the housing, which is horizontally and vertically adjustable. The reflector carries on its circumference a joint ball, which rotates in a bearing connected to the housing on the cover disc, and an axle which is located substantially in the same horizontal plane as the joint ball and is rotatable in a shoe which is attached in the housing with substantially horizontal sliding mobility. Bearing and shoe are accommodated in spaces which are located in alignment on the housing behind at least one groove-rib connection of the cover disc.

Abstract: A luminaire for use with HID lightbulbs includes a housing having four primary identical compound curve reflector sections oriented with two sections on each side of the lamp to cause major projections of the light emanating from the luminaire diagonally of the longitudinal axis of the lamp in a horizontal plane to create a square or rectangular distribution of light on the surface to be illuminated. Auxiliary reflector sections are placed at the ends of the light bulb and interconnect the main reflector sections to create an increase in the light projected along the lamp axis to compensate for the reduction in inherent lamp intensity along its axis.

Abstract: Improved light reflector apparatus for use in an electronic flash unit or the like is formed by an injection molding operation, which causes both precise shaping of a reflector and accurate mounting of the reflector securely within a housing. A light-reflecting flexible sheet is placed in a mold so that its light-reflecting front surface is centrally positioned adjacent a mold forming surface. The forming surface, which is larger than the sheet, has a contour adapted for shaping the sheet to reflect light into a beam of illumination. Liquid plastic is injected into the mold under pressure against the opposite surface of the sheet, thus pressing its light-reflecting surface into intimate contact against the forming surface. Because the sheet is smaller, the border of the forming surface is not covered by the sheet. Plastic flows beyond outer edges of the sheet against the uncovered border of the forming surface.

Abstract: The invention relates to an automobile headlamp having a light source co-operating with a principal reflector of generally parabolic form, and a glass which is greatly inclined with respect to the vertical. Selected critical zones of the reflector have an elliptical form with one focus in the proximity of the light source and the other focus in the proximity of the center of the glass, and the central zone of the glass is substantially smooth, in such a way that the light rays reflected by the critical zones of the reflector pass through the glass without significant deflection in spite of its inclination.

Abstract: Two concave reflector portions (22a, 22b) confront each other and have narrow ends (14) which overlap. The reflector portions widen from respective beam-emission axes (13) to their wide ends (16). The beam-emission axes are oppositely-directed. The apparatus has beam-emitting apertures (18) at the wide ends. A bulb (24) disposed between the overlapping narrow ends of the reflector portions produces two mutually divergent light beams, by reflection off the reflector portions.

Abstract: A lamp is attached to the back end of a synthetic resin reflector through a synthetic resin lamp holder. A heat shielding member made of a metal such as stainless steel, aluminium or general steel plate is appropriately attached to the lamp holder to cover the circumferential face of said lamp holder in such a way that said circumferential face is not subjected directly to the light projected from a filament in the lamp.