Abstract: In an illuminating apparatus having an electric light source housed in a container permitting light to escape upwardly towards an object supported above and in close proximity to the light source, the improvement comprising two horizontal, vertically spaced sheets having apertures in vertical register disposed above the light source, said sheets acting as light baffles, so that light escapes upwardly in the shape of spreading light beams. The neck surfaces of the apertures are minimized and made non-reflective, so that observers are protected from the glare of the light source and from reflections of light from components of the apparatus.

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: An upper reflector system for a fluorescent troffer utilizing a double tube florescent lamp oriented vertically relative to a downward surface to be lighted. Intersecting lower louvers form a multiplicity of cells through which the fluorescent lamp passes. An upper reflector system directs light originating with the lamp outwardly from the fixture in multiple directions.

Abstract: Interior lighting fixtures having specific shielding conditions. For lighting fixtures having a center-symmetrical light exit area, a structural pattern for a grid inserted into the light exit opening of the lighting fixture is provided which meets the specific shielding conditions of the BAP picture screen workstation condition and the like and which masks the light from the lighting fixture as little as possible. This structural pattern is based on a subdivision of the grid into segments of identical size having self-contained framing cells whose diagonal or whose largest, straight side or, respectively, a chord of the largest, arcuate side does not exceed a value 2 Ro of the diameter of the center grid cell. The size of the center grid cell thereby results from the height of lamellae exhibiting a double-parabolic cross-section while preserving the desired shielding condition for this center grid cell.

Abstract: The light shield-reflector for a lighting implement comprising a substantially tubular base associated with a reflector element of multiple type constituted by a set of superimposed wings spaced apart from each other. The structure of the wings shows substantially a "U"-shaped plan and a parabolic cross-section. The light flux forms a cone-shaped light and diffuses by passing through the space existing between two adjacent wings.

Abstract: A glare-free illuminating system comprises a light chamber and proximate, light conducting structures extending vertically, containing a light passageway. Light-blocking means restrict the upward passage of light. The restricted light beams have smaller horizontal dimensions than the light passageways, which have non-reflective interior walls, so that light passing therethrough produce neither direct glare nor glow reflected by the apparatus walls. Light is only indirectly visible by its reflections from the illuminated object.

Abstract: A fluorescent lamp fixture having a troffer and a louver light diffuser includes meltable fasteners for attaching the louver light diffuser to the troffer. In the event of a fire, the meltable fasteners allow the louver light diffuser to fall free from the troffer.

Abstract: Housing for long-field lamps comprising interchangeable louver insert. A lock in the form of a spring arm that is secured to the face wall of the housing is suitable for the mutually releasable interlocking of the housing and louver insert in housings of long field lamps having an interchangeable louver insert. This lock has its free end projecting beyond the upper, bent-off edge of the end louver lamella when in engagement with this upper edge and being capable of being unlocked by the accessible gripping surface that is thereby formed. When such a louver is to be interchanged for a louver insert having higher louver lamellae, then, due to the upper, bent-off edge of the end louver lamellae now being higher, a refitting of the lock is required by placing it higher on the face wall of the housing.

Abstract: A louver system for use with louver supports having inwardly opening perimetral end and side channel defining a rectangular louver space and adapted to receive the end and side edges of the louver. The louvers are provided with integrally molded end and side flanges, which may be of either of two preselected lengths, illustratively identified as short flanges and long flanges. The end flanges may have a length differing from the side flanges in the louver. Each of the short and long flanges may have different lengths depending on whether the cells of the louver are small or large. By providing the small cell louvers with either of the short or long flanges and the large cell louvers with either of the short or long flanges, a majority of standard louver mounting systems may be accommodated with only the four configurations.

Abstract: A headlamp assembly having a colorless lens which is positioned flush with the adjacent panels at the front end of a motor vehicle and which includes horizontal louvre and vertical slat means located within the body of the headlamp that art of the same color as the adjacent panels and are positioned and spaced therein so that the lens appears to be the same color as the adjacent panels.

Abstract: A light director has an elongated, hollow, opaque open-ended shield. The shield slips over the glass housing of a light bulb. A pair of small apertures on the side of the shield receive portions of the glass housing in a sliding engagement which provide for the shield to be oriented in several angular positions. A plurality of flat, spaced apart slats extend across one open end and function to cause the light to exit in generally parallel beams.

Abstract: The specular lamp or lighting fixture comprises a fluorescent tube as a light bulb which is arranged largely within a channel-shaped counter-reflector. Cross-lamellae for blanking the light of the fluorescent tube out in the longitudinal direction are seated on the counter-reflector. A channel-shaped main reflector which is designed large, and whose surface is preferably matted, is situated opposite the counter-reflector. A uniform luminance in the radiation region and a compact structure are achieved with the specular lamp. The luminance does not exceed a prescribed value in a prescribed, screened region.

Abstract: A daytime headlight illumination device carried by a motor vehicle such as a motorcycle or a car for better visibility thereof to other motor vehicles comprising a motor vehicle headlight assembly including a light source and a headlight lens and a shutter assembly located directly in front of the headlight lens and in the path of light rays originating from the light source, the shutter assembly including a plurality of fluorescently colored movable shutter blades and means for moving the shutter blades between an open position for use during nighttime wherein the light rays are passing through only the headlight lens and a closed position for use during daytime wherein the light rays are passing through the headlight lens and the fluorescently colored shutter blades so as to make the motor vehicle carrying the device highly visible during the daytime.

Abstract: An improvement in reflective louvres for lighting fixtures is disclosed. The improvement is directed toward a means to interlock the louvre components together so as to create a tight fitting, uniform seam at the junction of the various components. The present invention is particularly suitable for use with louvres having reflective parabolic or other curved surfaces. The present invention maximizes the reflective capability of the louvre while presenting a more aesthetically pleasing lighting fixture. Further, a louvre according to the present invention is easy to assemble and requires a minimal amount of labor in assembly.

Abstract: A reflector system for a luminaire having an electric lamp which includes a first reflector and a second reflector extending along opposite sides of the lamp. A cross baffle is located between the first and second reflectors and includes reflecting surfaces at the side portions. The cross baffles also includes a light absorbing portion at the top between the reflecting surfaces of the cross baffle to prevent bright spots in the luminaire.

Abstract: A luminaire of the direct lighting type includes a fluorescent lamp for emitting a torodial light pattern to a reflector assembly having a plurality of flat and contiguous facets spaced laterally from the lamp. The reflector functions to reflect the torodial light pattern within parallel light distribution zones. The reflector may be of the cross-beam type (FIGS. 1-4) or down-beam type (FIG. 5). The facets are precisely positioned relative to the light source to provide the above functions whereby the luminaire will function efficiently and will closely control direct and reflected glare. A louver-lens assembly can be utilized to enclose the open bottom of the luminaire and to aid in these functions, a method is also taught for plotting the precise positions of the facets.

Abstract: An ice body maker having a storage bin into which ice bodies are delivered from ice slab cutting structure. The ice bodies in the storage bin are illuminated from a lamp which utilizes the grid wires of the cutting structure as a diffusion structure for minimizing glare, facilitating observation of the ice bodies and removal thereof by the user. The lamp is located so as to direct the light therefrom primarily away from the access opening for further improved illumination of the ice bodies. The lamp is preselected to provide sufficient illumination to illuminate the ice bodies through an ice slab carried on the grid structure as during a slab cutting operation and utilizes the ice slab itself as a further light diffusion element. Still further diffusion of the light for improved uniformity on the ice bodies is effected by the reticulation of the ice slab effected by the grid wires in cutting through the slab during the slab cutting operation.

Abstract: With the purpose of obtaining an axial angle of cut off for a luminaire with a rodlike lamp (1) a glare protection is arranged comprising lamellas (2), the lamellas being arranged immediately at or around the surface of the lamp to form axially spaced and radially outward from the surface extending effective surfaces.

Abstract: A substantially glare-free, directional lighting of three-dimensional objects is provided which artificial light is generated at a central point which is recessed, in close proximity to, and below the object to be illuminated. The light shines both directly upwardly, as well as downwardly against a reflective surface and then upwardly in the direction of such object in the shape of a predetermined light cone penetrating the underside of and substantially enveloping the object without significant scattering of light. A compartmentalized grille above the light source surrounds the lower end of the object and shields the eyes of observers from direct view of the light. The upwardly reflected light is centripetally and indirectly visible by its reflections from the illuminated object.

Abstract: A lighting fixture for a vehicle has a plurality of light source units having light emitting diodes linearly disposed. The light source units are arranged parallel to each other at predetermined spaced relations, and spaces between the light source units serve as areas to be illuminated by incandescent bulbs.

Abstract: A lighting fixture and ceiling structure incorporating same are disclosed. The fixture may be securely mounted within a ceiling grid work assembly by a simple downward movement of the fixture. Ceiling board is supported by being mounted on flanges integral with the fixture on the one hand and elements of the supporting grid on the other. The fixture and grid work interact so as to effect an accurate positioning of the fixture relative to the grid work by taking advantage of centering formations integral with the grid work.

Abstract: A lighting fixture consisting of a downwardly opening housing having a plurality of fluorescent lamps mounted therein, a louver assembly substantially closing the open bottom of the housing and dividing its area into vertically open cells only certain of which receives light from each of the lamps, the louvers being of sufficient vertical height to restrict light passing directly through the cells to a restricted primary area of brighter illumination in the room below, and a translucent light-diffusing panel covering the cells of the louver assembly receiving light from each of the lamps. The lamps may be selected to emanate light of respectively different colors, and both the louvers and the light-diffusing panels may be of selectively different tints and colors, so as to impart a novel, decorative appearance to the louver assembly when viewed from outside of the primary lighting area.

Abstract: A headlamp suitable for a motor vehicle comprises a first component part composed of a reflector and a second component part composed of a lens and a rearwardly projecting spacer, the two component parts being connected together by interleaved peripheral webs and channels which form a labyrinth seal preventing ingress of water, but allowing ventilation. Pivot axes are formed by interengaging partly cylindrical formations along the edges of the webs and channels.

Abstract: A vehicle lamp assembly, of the type in which the color of the light to be produced by the lamp cannot readily be perceived when the lamp is not illuminated, comprises an outer light transmitting member having horizontal strips of opaque material embedded in its outer surface. A respective horizontal baffle is aligned with each opaque strip. A lens element focuses collimated light on the gaps between the strips and can also serve as a color filter.

Abstract: A vehicle lamp assembly has a light source, a light transmitting member, baffle elements of light absorbing material extending perpendicular to the surface of the light transmitting member towards the light source and lens means located between the baffle elements and the light source so as to concentrate light from the light source between adjacent baffle elements. The ends of the baffle elements abutting the light transmitting member are of a color chosen in accordance with the required appearance of the lamp assembly when the light source is not illuminated and the rest of the baffle elements are black.

Abstract: An antiglare panel is formed of a series of identical inter-locked strips. Each of the strips is formed of a series of "W" shapes having two connected short legs formed at right angles to each other and two long legs extending at right angles from a respective short leg to define the "W" shape. The long legs of adjacent "W's" are formed at right angles to define a projecting right angle. The projecting right angles of one strip are positioned within the recessed right angles of an adjacent strip so that the interior surface of the short legs overlie a portion of the exterior surface of the long legs to provide contacting surfaces. Such contacting surfaces may be secured together.In a preferred embodiment, the strips are formed of tinned steel strip, and the assembled strips are heated after assembly to a temperature above the melting point of the tin coating to provide a metal bond at all contacting surfaces.

Abstract: A lamp such as a fog lamp for a vehicle is provided with a housing which serves to mount an array of parallel louvers. The louvers are controlled by a heat driven actuator. Such as one which incorporates a shape memory metal actuator element. This actuator element is heated either by resistive heating or by direct heat of the light bulb when the lamp is activated. When heated, the actuator serves to pivot the louvers into an open position. Once the lamp is deactivated, heating of the actuator is terminated, and the louvers are automatically closed to protect the lens by a spring as the actuator cools.

Abstract: A light reflector for specific use in combination with an elongate light source such as a fluorescent lamp. It has a plurality of reflecting surfaces disposed behind and symmetrically of the light source and includes opposed central tangent reflecting surfaces. The cumulative effect of the reflecting surfaces is to synthesize the light rays emitted upwards with those emitted downwards by the sourve towards the area to be lighted.

Abstract: A recessed lighting fixture used in association with a suspended ceiling system made up of several spaced grid members. The lighting fixture is comprised of a fixture housing having means for supporting at least one fluorescent lamp and includes a relatively thin deflectable top plate which in turn may include a reflecting surface disposed over the fluorescent lamp. Means are provided for securing the fixture housing to the grid members. The louver assembly of the fixture is mounted in a simplified manner and includes a top portion designed to contact the deflectable top plate during insertion and a bottom portion including longitudinally extending sides designed to rest upon and be supported by the spaced grid members. The louver's bottom portions are insertable on the grid members in sequence, first one and then the other, whereby the louver assembly is firmly supported in the fixture housing without the requirement of additional hardware such as springs, latches or the like.

Abstract: The present invention relates to a process for making false ceilings comprising a series of parallel strips of fabric of reduced width, reinforced transversely, tensioned longitudinally and oriented vertically in a mean horizontal plane located at an appropriate height below the ceiling of the construction, wherein each strip is tensioned individually and independently of those strips which surround it. The invention also relates to the false ceiling made by carrying out said process.

Abstract: To minimize wind resistance in streamlined vehicles, headlights are mounted at a fixed angle with their frontal lenses flush and parallel to the sloping body surface. Light is reflected at the required angle and intensity onto the roadway by a system of reflective spaced slats positioned near and rearwardly of the headlight lens and well forwardly of the parabolic headlight reflector. The reflective slats may be contained in a fabricated assembly or may be embodied in a unitized molded structure. The system is compatible with incandescent and halogen light sources and with standard adjustable headlight mounting structures on vehicles.

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: Apparatus is disclosed for uniform exposure of a plurality of objects such as semiconductor wafers to radiation utilizing sources of radiation of linear configuration. The apparatus includes a baffle assembly of particular construction and constitution situated between the linear sources and the region to be irradiated.

Abstract: In an integrated suspension ceiling it is disclosed in which a fluorescent tube type lighting fixture is supported from an directly over a runner forming a part of the grid of the ceiling system. The runner is provided with a central web and oppositely extending flanges extending from the sides of the web. The web is formed with an opening above which the lighting fixture is supported. The lighting fixture includes a ballast frame separately supported on the runner above the opening, a reflector positioned in the opening below the ballast frame supported directly on the runner and a louver mounted within the opening flush with the plane of the ceiling. Each of the frame, reflector and louver are separately supported and removable from the runner for installation and service. Because the lighting fixture is supported directly on the runner and is removably attached thereto, the lighting fixture can be installed after the grid is installed. The fixture does not provide an interruption in the ceiling system.

Abstract: A task lighting apparatus produces glare-free illumination of a work area. The apparatus includes a light source, a reflector and light-directing louvers to provide a controlled light pattern of high illumination levels and high efficiency. The apparatus has a compact size and shape which enables it to be used in confined quarters.

Abstract: 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.

Abstract: A light source consisting of a straight tube fluorescent lamp is mounted almost in parallel with a desk work surface to be illuminated. A housing enclosing this light source is mounted, and this housing is fixed on the surface to be illuminated by means of two support members. The housing has an opening section at its lower position, and a light controller which is formed of two kinds of prism plates is fitted in the opening. The light emitted from the light source is refracted by the prism plates. These beams of light are converted by the above light controller to two types of light components which run almost in parallel with the first and second directions. One of the beams of light falls from the right top in front of the person at desk to the illuminated surface region in proximity to the left hand of the person at desk, and the other beams of light fall from the left top in front of the person at desk to the illuminated surface region in proximity to the right hand of the person at desk.

Abstract: A mounting for use in conjunction with a laser in an installation where the structure may be subjected to destructive shock. The structure includes an external rigid shell to contain the laser head and power supply panel. The shell encloses impact absorbing shock mounts or plates which serve to retain shock reduction cushions which surround the laser head and support it within the shell returning it to its appropriate position following shock. A shock absorbing bracket is provided to mount the entire unit in position.

Abstract: In a lighting fixture, a light source is partially surrounded by a reflector system mounted in a housing to direct light from the light source out through an aperture in the front of the housing. The reflector is cylindrically and parabolically shaped to provide a cut-off above a selected vertical angle and to provide a decreasing intensity with decreasing vertical angles from a maximum intensity to effect uniform distribution. A lens is provided in the aperture to achieve uniform distribution through a wide horizontal angle. The reflector system and the light source are pivotable within the housing about a fixed horizontal axis to adjust the vertical cut-off angle and the angle of the maximum intensity. A fixed reflector is mounted near the top of the aperture on the front wall of the housing to get more sideways distribution of the light when the light source is pivoted toward the back of the housing.

Abstract: A light fixture having an optically diffusive viewing element having a viewing area across which apparent uniform brightness is achieved from a conventional light source and reflector by utilization of a light aperture. The light aperture comprises a tralucent substrate to which a plurality of reflective surfaces are affixed so as to partially redirect light incident thereon back to the reflector. Apparent uniform brightness of the light fixture viewing area is derived by a unique method of dividing the light from the light source into varying portions of direct and indirect illumination through the light aperture as well as direct illumination from the light source and indirect reflection from the reflector to the viewing area.

Abstract: An aircraft instrument lighting fixture is described as having a bezel top or covering for the instrument. The bezel top has a cylindrical opening through which the face or dial of the instrument can be viewed, and an inner cylindrical wall which is adjacent the opening and around which is located an electroluminescent lamp which, in turn, is covered by a micro-louver type material that is designed to prevent an observer of the instrument from seeing the light ring created by the electroluminescent lamp. A film of light polarizing material is placed between the electroluminescent lamp and the louver material to eliminate any objectionable reflection and glare normally created when unpolarized light strikes the instrument.

Abstract: A light distribution louver for a lighting fixture wherein the louver together with supporting apparatus closes at least the bottom of the light fixture. The louver may be of unitary construction or preferably formed of individual louver sections or sectors depending upon the shape of the supporting apparatus. The louver sections or sectors may have fixed or movable vanes and in the case of sections, they may be positioned in a variety of orientations to attain varied light distribution characteristics. The invention further contemplates a structure wherein the supporting apparatus encloses the lighting fixture to afford more complete protection.

Abstract: A cover plate for vehicle lights, especially taillights of automotive vehicles, which includes an outwardly oriented surface of the cover plate which, as viewed in a vertical section, is fashioned of a meander shape. At least a part of the horizontal lying areas of the cover plate are made to be at least extensively opaque by, for example, a dark surface coating or dark inserts which are integrally cast or injection molded into the horizontal areas of the cover plate.

Abstract: A street lighting luminaire comprising an elongated semi-cylindrical reflector of parabolic cross-section having opposite ends, and paralumens arranged to obtain a luminous beam whose divergent with respect to a plane normal to said axis varies from one to the other end of said reflector to obtain on the street a lightened area of rectangular cross-section.

Abstract: A work area lighting system is provided including a housing containing a linear light source therein and having an open bottom end. A refractor comprising a pair of refractor plate members closes the open bottom end. The refractor includes a first member having a plurality of spaced prisms extending parallel to the light source and a second member having a plurality of spaced prisms extending perpendicular to the light source. The second member underlies the first member and is approximately one-half its length. The second member is moveably mounted to the housing to enable it to slide with respect to the first member so that different portions of the first member may be covered as desired.

Abstract: A light distribution louver for a lighting fixture wherein the louver together with supporting apparatus closes at least the bottom of the light fixture. The louver may be of unitary construction or preferably formed of individual louver sections or sectors depending upon the shape of the supporting apparatus. The louver sections or sectors may have fixed or movable vanes and in the case of sections, they may be positioned in a variety of orientations to attain varied light distribution characteristics. The invention further contemplates a structure wherein the supporting apparatus encloses the lighting fixture to afford more complete protection.

Abstract: A luminaire having parabolic reflector elements to obtain strong crossed beams of reflected light forming the main components in a batwing distribution, with elliptical reflector elements to reflect light toward the center and mid-zones of the distribution pattern but not toward the peripheries, to improve the uniformity of the illumination on a surface and to reduce direct discomfort glare. The luminaire has special utility for uplighting, to illuminate a ceiling which can thus produce indirect illumination of an area, relatively free from veiling reflections.

Abstract: Various embodiments of optical apparatus incorporating a foraminous plate to define a field of view are disclosed. In a first embodiment, the foramina in a foraminous plate are cylindrical with the field of view defined by the ratio of the diameter of each foramen to the thickness of the foraminous plate. The presence, or absence, of a target within the field of view is determined by the electrical signal out of a photodetector actuated by light passing through the foramina. In particular, embodiments illustrating the use of the disclosed optical apparatus as a sensor in a guided missile, the foraminous plate and photodetector are movably mounted in such a missile to allow either bearing or range of a target to be determined.

Abstract: A lamp adaptor for use with a conventional electric lamp, such that enhanced indirect lighting capability is provided. The lamp adaptor includes a top baffle which directs the light upwardly and outwardly of the shade and simultaneously downwardly through the sides of the shade. The lamp adaptor has a threaded exterior male plug which is engageable with a conventional electric bulb socket in a table or floor lamp and includes a plurality of downwardly extending axial support struts which may engage a support collar encircling the conventional electric bulb socket. The lamp adaptor provides indirect as well as direct lighting capability in conventional electric lamps.