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| Number | Title | Issue Date |
| 4451872 | Process for the most uniform illumination of a surface by a collimated beam of rays and arrangement for laser diagnostic A process for the most uniformly possible illumination of a surface by a limated beam of rays with arbitrary distribution of the beam intensities. An equalization in intensity is achieved in a plane perpendicular to the direction of the beam in that, in the p... | 05/29/1984 |
| 4432039 | Light transmitting system for automobile headlamp A light transmitting system for an automobile headlamp having a real light source, means for a light channel and an elliptical reflector for concentrating the radiation from this source on the end of the light channel provided with a plurality of reflecti... | 02/14/1984 |
| 4425604 | Illuminating device for a display unit An illuminating device for a display unit in which the display panel can be illuminated uniformly under a relatively constant luminous intensity. The illuminating device according to the present invention comprises a display panel, at least one light sour... | 01/10/1984 |
| 4394715 | Protective device for a ground-deposited light A protective device for a ground-deposited light is disclosed. Such a light, e.g. a guide-light for airfield use, generally includes a housing (2) having a cover (3) provided with an opening (5) for letting out light rays from a lamp (4) within the housin... | 07/19/1983 |
| 4369488 | Optical system permitting controlled shifting of the beam pattern in headlamps, especially for vehicles In a vehicle headlamp, a light deflecting system is provided which comprises two plate-like transparent deflecting elements. Each element has a series of parallel fibs, and the elements are movable one relative to the other at right angles to the length o... | 01/18/1983 |
| 4368504 | Task lighting apparatus 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 o... | 01/11/1983 |
| 4345308 | Alpha-numeric display array and method of manufacture 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 5×7 matrix array of individually operable illumination ... | 08/17/1982 |
| 4323951 | Laminar light guide The present invention relates to laminar light guides which are particularly suitable for providing illumination from one or more light sources to a plurality of instruments and other display devices as in a vehicle instrument panel. The guide makes effic... | 04/06/1982 |
| 4298916 | Lighting system with baffle A lighting system wherein a task-oriented light source is supplemented by the provision of a baffle so located in relation to the positions of the source, the task and the observer as to block out or modify, in whole or in part, the light reaching the tas... | 11/03/1981 |
| 4272804 | Lighting panel trim element A lighting panel trim element for attachment to the outer marginal edges of a lighting panel is disclosed as having a throat section for receiving the top, side and bottom marginal edges of the lighting panel, a horizontal wall section for mounting the li... | 06/09/1981 |
| 4233651 | Work area lighting system 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 ... | 11/11/1980 |
| 4209822 | Light Polarizing illumination device A desk or other work table has a long horizontal work surface above which is mounted one or more suitably housed linear fluorescent lamps extending for about the length of the work surface and at about eye level. A plurality of side-by-side light polarizi... | 06/24/1980 |
| 4164011 | Decorative drop ceiling A decorative drop ceiling including a panel having a plurality of openings therein disposed between a source of light and an area to be illuminated. A light transmissive lens is disposed in each of the openings. Each lens has a predetermined thickness dim... | 08/07/1979 |
| 4069417 | Lighting panel having improved refracting elements A lighting panel used to control locally unidirectional light passing therethrough is constructed from a plurality of light modifying elements for substantially controlling the distribution of light within a control range. Each element is constructed to c... | 01/17/1978 |
| 4064433 | Prismatic lighting panel A light-weight plastic lighting panel having recessed conical prisms arranged in such a way that their intersecting edges form equilateral triangles, all of whose sides lie along lattice lines. The side of each triangle has a length of 0.475 cm. (three-si... | 12/20/1977 |
| 4059755 | Luminaire lens insert A luminaire lens is provided with a prism arrangement which emits light in two beams. A fluorescent tube fixture is utilized with the lens and approximately the same amount of light comes from the 0° to 30° zone of candlepower distribution and the 30° ... | 11/22/1977 |
| 4054793 | Lighting system A desk level work area and its immediate environment are lighted with reduced or eliminated glare and veiling reflections from the task, by a lighting fixture mounted between seated eye height and standing eye height. The lighting fixture comprises an elo... | 10/18/1977 |
| 4053208 | Rear projection screens A rear projection screen produced by providing surface irregularity directly on at least one side of a light diffusion layer containing at least one light scattering material selected from the group consisting of one or more waxes, one or more crystalline... | 10/11/1977 |
| 3988609 | Lighting panel and luminaire using it Luminaires equipped with an improved high efficiency, wide light distribution lighting panel provide more favorable ESI values and may be spaced farther apart than conventional ones. The lighting panel includes three bands of conical prismatic elements; t... | 10/26/1976 |
| 3934135 | Fluorescent lamp fixture A fluorescent lamp fitting which includes a sheet metal base having a pair of inwardly-directed flanges and a flexible plastic diffuser having outwardly-directed flanges which cooperate with said inwardly-directed flanges to hold said diffuser in relation... | 01/20/1976 |
