Abstract: A beam-forming shade for use in a vehicular headlamp comprising a cylindrical shade body disposed horizontally in surrounding relation to a bulb of the vehicular headlamp so as to interrupt some parts of light emitted from a light source and a connecting member extending downwardly from the shade body and having a single mounting hole to be attached to a reflector by a single screw. The shade of the present invention is obtained by bending a single thin metal plate which is previously cut to form a predetermined contour, which plate having a continuous developed form of the cylindrical shade body and the connecting member, thereby obtaining an integral shade.

Abstract: A lamp assembly which utilizes a plurality of concave reflector elements to direct light to prescribed areas of an associated panel, such as a license plate.

Abstract: A dual emitter light assembly employs a reflector having a pair of concave reflector dishes. Each dish is associated with a lamp socket. Each concave dish comprises at least three parabolic reflector surfaces having a common focal point. The axes of the parabolas of revolution which define the reflector surfaces are non-parallel and lie in a common plane, the axis of both dishes lying in the same plane.

Abstract: The invention relates to an improvement in light fixtures of the type having a base, a socket receiving a bulb, and a primary reflector defined on the base located in relatively close proximity to the bulb. The improvement consists of a secondary reflector located between the primary reflector and the bulb. The secondary reflector is closely spaced from the primary reflector defining an air gap therebetween. The secondary reflector provides dispersion of concentrated heat produced by the bulb to maintain the primary reflector at a lower temperature whereby the air gap reduces heat transfer between the reflectors, and the secondary reflector is formed of a reflective material to provide improved light reflectance qualities.

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 one 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: 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: 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: A warning light having a wide angle radiation pattern and the ability to accept either an incandescent lamp or gaseous discharge tube as the light source is disclosed. The wide angle radiation pattern is, in part, achieved through the use a reflector having three separate surfaces which define parabolas with different axes and a common focal point, two of these parabolic reflector surfaces being spacially separated from one another and extending from the third reflective surface. The light emitter is supported from the third parabolic reflector surface such that the lamp filament or the gaseous discharge tube will extend through the common focal point.

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: A motor vehicle headlight suitable for emitting a light beam which is essentially complementary to a dipped beam having a cut-off so that together the two beams constitute a main beam, the headlight being of the type comprising an axial filament lamp (100), a reflector (200), and a closure glass (300), the headlight including the improvement whereby: the filament of the lamp emits freely in all directions thereabout; the reflector comprises two first sectors which are paraboloid in shape, which have a common focus (F.sub.

Abstract: An optical system is disclosed for generating multiple light beams from a single light source. The system includes reflectors disposed adjacent to the optical axis of the light source to capture and reflect all the light in a space efficient manner. One of the beams may be collimated for spot lighting while the others may be wide-angled. Alternatively all the beams may be collimated.

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: The reflection surface of a rectangular reflector for a lower beam headlamp is composed of four sectors delimited by transition lines. Two diametrically opposed left and right sectors (11, 12) form a part of a paraboloid projecting a hot light spot. The diametrically opposed upper and lower sectors (13, 14) are part of a paraboloid-ellipsoid defining a parabola in its vertical center section and an ellipsis in its horizontal center section. The latter sectors project a light spot having a broad light dispersion and an increased front field illumination. The reflected light beam corresponds substantially to a dimmed lower light beam to be projected on the road so that a light dispersing glass of the headlamp does not require any optical means for light beam adjustment.

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 fog lamp is comprised of a reflector and a pane connected to the reflector. An incandescent lamp is positioned inside the reflector which has a lower portion formed by paraboloid and an upper portion the vertical cross-section of which is formed by ellipse while its horizontal cross-section is formed by parabola. The upper and lower portions have a common focus and a common focal length.

Abstract: A photography light for providing fill illumination includes a first reflector having planar sides and an opening in a rear portion thereof, a second reflector lying within the first reflector and overlying the opening therein. The second reflector forming light compensating channels with the sides of the first reflector and includes at least one aperture in a rear surface thereof through which lamps may be variably positioned. The light compensating channels allow a portion of the light blocked by the backs of the reflectors when the lamps are in a retracted position, to pass to the front portion of the reflectors to be reflected into the photographing field thereby smoothing the illumination therein.

Abstract: A parallel light moving type exposure apparatus including a light source adapted to cause parallel lights to be obtained by the lights reflected from a parabolic reflector, said light source and a material to be exposed being moved relative to each other to perform the exposure, comprises a first light-shielding member and a second light-shielding member. The former is intended to be used for preventing the lights from the light source from being directly irradiated onto the material to be exposed. The latter is intended to be used for making uniform the cumulated amounts of lights on points of the material to be exposed.

Abstract: A reflector for an electric light has a first reflector member with a socket for the light bulb and a second reflector member positioned generally forward of the socket. In one aspect of the invention a first angular segment of the first reflector defines curved reflector means for reflecting light from the light in the socket into a collimated beam. The remaining angular segment of the first reflector defines a transversely directed, curved reflector for focusing light from the light bulb back to the filament in the light bulb to increase the filament temperature. In another aspect of the invention, the first, angular segment of the second reflector member defines a transparent partition, with the partition carrying a plurality of transparent ridges of triangular cross section. The ridges are circumferentially disposed at different radii about an extension of the central axis of the socket. Thus light from the light bulb in the socket is diffracted by the ridges into the collimated beam.

Abstract: An electric light has a casing with a depth that is less than half as great as its width. This is rendered possible by the use of a compact, precision reflector which permits a focused, parallel-directed beam despite the configuration of the casing.

Abstract: To permit, selectively, illumination of an operating-room field for depth illumination in a path of radiation which may differ from field illumination, a ring-shaped full reflector (3) is located in a reflective position with respect to a light source (1, 2), and, in advance of the main, fully reflective mirror, a mirror system is located which has apertures which can be selectively covered or uncovered with a further mirror element (6, 13, 19) so that the amount of light passing through the apertures of the second mirror system through the first mirror system can be varied, and the path of light controlled in accordance with the relative position of the mirror systems, while the intensity of light reflected by the respective mirror systems is controlled by the positioning of the movable element of the second mirror system with respect to the fixed one.

Abstract: The invention provides a headlight for a motor vehicle with a concave reflector, which has a light filament disposed in its inner part with the longitudinal axis of the filament about in parallel with the direction of the outgoing beam. The reflector is composed of a surface spanned by nearly parabolic branches generated by the intersection of the reflector and of planes including the axis of the reflector. The upper part of the reflector includes parabola branches having a focal point close to the vertex point and a focal point more remote from the vertex. At least the lower part of the reflector has the focal points of the conical sections near parabolic branches form a focal line, where the length of the focal line coincides at least in part about with the position and length of the incandescent filament. The section through the transition between upper and lower reflector part is represented by a cone section, which is nearly parabolic.

Abstract: A marker light comprising first and second reflectors each having a focus, a reflection surface of a quadric of rotation, an opening at the vertex end and a light projecting opening at the other end, the vertex ends of the reflectors facing each other and the focus of the first reflector being positioned closer to the light projecting opening of the first reflector than is the focus of the second reflector, a light source provided between the focuses of the first and second reflectors for emitting light, light from the light source being reflected from the first and second reflectors and supplied through the light projecting openings of the first and second reflectors, and a housing housing the first and second reflectors and the light source and having a first transparent section for passing light reflected from the first reflector and a second transparent section for passing light reflected from the second reflector, the first and second transparent sections being positioned to face the light projecting ope

Abstract: An improved projection lamp unit including a glass reflector having a concave reflecting surface and a tungsten halogen lamp positioned within the concavity of the reflector. The concave reflecting surface of the reflector is provided with alternately disposed radially extending regions including a series of specular stripes in combination with alternately spaced regions of facets. Preferably four or five stripes and an associated four or five facet regions are provided.

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: Electric floor lamp comprising a generally conical base rotatably mounted on a stationary annular base. A column is fixed on and extends upwards from the conical base. At the upper end of the column, a laterally extending arm supports a lamp and two light directing members, one above and one below the lamp. The upper light directing member includes concentric rings spaced apart to provide air circulation. Height adjustment means are provided to change the elevation of the lamp above the floor.

Abstract: According to the invention the luminaire, which is suitable for use with an elongate cylindrical light source, has a dish-shaped reflector with an egg-shaped light emanating face. The reflector mainly comprises a number of elongate facets which are each curved concave longitudinally and transversely and which extend with their longitudinal sides substantially parallel to the light emanating face.The luminaire gives the illuminated road surface a very uniform luminance.

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 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 reflector for use with a discharge lamp having a front section with a reflective surface which follows a surface of revolution and a rear section which is fluted. The crests and roots of the flutes lie along arcs of concentric spheres. Light from the lamp directed toward the front section is reflected out through its open end. Light directed toward the rear section is reflected by the flutes away from the arc and toward the front section, thereby avoiding increases of arc temperature.

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: To provide for uniformity of illumination across a film window, for example or super-8 mm film, the reflector has at least two contours whose generatrices follow conical sections which have a common optical axis in the direction of radiation emission, and which are so arranged that the sections are formed as sectors, with adjacent sectors having different contours. At least four sectors are used, and preferably the focal point of the generatrices are displaced relative to each other either in the reflector axis or on a parallel thereto, the conical section are identical, and two such conical sections are used, with surface areas at a ratio of between 4:6 or about even.

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: 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: To provide for essentially uniform illumination throughout the area, for mple the film window of a film or slide projector, the reflector has at least two contours which form a reflector system, each contour being rotation-symmetrical with respect to the optical axis of the total system. The generatrices of the contours follow conical sections. The reflector is divided into zonal regions, with successive zonal regions lying on different contours. For example, two conical contours can be used, the contour of one conical section being such that spot illumination results, and the contour of the other conical section being such that a saddle-tight illumination is obtained so that the overall light output throughout the window is essentially uniform (see the additive of FIGS. 3a and 3b, as shown in FIG. 3c).

Abstract: A luminaire comprises a light source and a reflector which has an opening for emitting light and an apex opposed the opening, and which reflects light emitted from the light source in a desired direction. The reflector having a first area at the intermediate portion between the opening and the apex thereof consisting of a plurality of reflecting surface units with inclined surfaces located at both sides thereof, and a second area disposed at least partially between the intermediate portion and the opening consisting of hammer tone finished reflecting surfaces formed at least partially on a portion located nearer to the opening for emitting light than the first area is located to.

Abstract: A reflector for mounting above a heating pipe is elongated and in transverse direction subdivided in three sections each of which is arcuately curved in the transverse direction. The center of curvature of the middle section coincides with the vertical symmetry plane of the reflector; the center of curvature of the outer flanking sections are laterally offset and vertically downwardly spaced relative to the center of curvature of the middle section.

Abstract: A light fixture is provided with a plurality of reflectors, each reflector is adjustable to a different position whereby the light fixture may provide plural paths of light. The light fixture has two end plates, a support bar, and a light tube. Individual adjustable reflectors are carried by the support bar and pass around the light tube. Depending upon the position of the reflector, the single light tube may provide lumination in a number of different areas.

Abstract: 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.

Abstract: In a motor vehicle headlamp or the like, the required distribution of the light rays is achieved entirely by selecting an appropriate configuration for the reflector; the front glass is a plain glass having smooth front and rear surfaces. The reflector surface is, as far as possible, a plain paraboloidal surface, but is provided with elongate ribs in selected zones, to produce a spreading of the light rays reflected from these ribs; the light is spread transversely to the length of the ribs. The reflector surface also has offset portions which, like the basic reflector shape, are paraboloidal, but have their focus or foci displaced from the focus of the basic reflector shape.

Abstract: An alpha-numeric array is provided for the selective display of characters as controlled by associated character generator programming circuitry. The display array in one character format utilizes a 5.times.7 matrix array of individually operable illumination sources, LED solid state lamps for example, with programmed combinations of the individual illumination sources being operated to display the programmed characters. The display array includes a lens and front panel array having integrally formed lens areas. The lens areas of the lens and front panel array when unactuated are essentially indistinguishable from the front panel array background area thus providing improved contrast. The display array also includes a reflector array having integrally formed reflector cavities. The integrally formed reflector cavities include predetermined surface characteristics for collimating the light rays emanating from the central axis of the reflector cavities.

Abstract: A slit illuminating device of a compact size which is capable of performing effective illumination on an image original having a certain amount of thickness such as books, bound documents, etc., the surface of which slightly separates off an original image mounting table when it is placed thereon with its surface to be illuminated being faced down to the table, and which is also capable of uniformly illuminating a slit portion irrespective of slight positional displacement of a light source, whereby the image original can be broadly illuminated with divergent rays from an oblique lower direction in a substantially symmetrical manner.

Abstract: To optimize light output from a multiple reflector photoflashgun powered by single elongated flashtube, the flashtube is positioned within a reflector having a curvature falling within the area defined by the curves A and B: ##EQU1##

Abstract: A garden light fixture is provided comprising a cylindrical housing about which a plurality of shades extend. The intermediate and top shade are secured to the housing by means of keyways formed integral with the shades which engage and are captured by slots formed in the housing.

Abstract: An improved operating room surgical lamp having a concave reflector housing, an inverted conical reflector disposed therein and one or more circular fluorescent lamps disposed within the concave reflector and about the inverted conical reflector. The surgical lamp of the present invention provides an evenly illuminated light field having a centrally illuminated portion of even greater illumination.

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.