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| Number | Title | Issue Date |
| 5010465 | Optical lighting system An optical lighting system comprising either an optical system or an optical mirror system. In the optical lens and optical mirror systems, the light incident and exiting planes of the lenses and mirrors, are formed to satisfy given equations. Accordingly... | 04/23/1991 |
| 4953062 | Strobe flash lamp with focussed front beam and collimated lateral beams A light fixture includes a parabolic reflector, a light source positioned at the focal point of the parabolic reflector and a lens assembly. The lens assembly includes a front lens for transmitting the primary beam reflected from the parabolic reflector. ... | 08/28/1990 |
| 4914544 | Airfield marker light An airfield marker light, comprising a casing to be flush-mounted in the ground and having a lower light source (4), an upper, a transparent cover plate (8) lying substantially in the ground plane M, and a refractive member (7) which divides the light bun... | 04/03/1990 |
| 4903180 | Luminaire with protected prismatic reflector This luminaire comprises a reflector of transparent material having a prismatic outer surface that includes many juxtaposed prisms. Each prism includes two reflecting surfaces meeting at an apex and having portions disposed to effect total internal reflec... | 02/20/1990 |
| 4870551 | Strobe flash lamp with focussed front beam and collimated lateral beams A light fixture includes a parabolic reflector, a light source positioned at the focal point of the parabolic reflector and a lens assembly. The lens assembly includes a front lens for transmitting the primary beam reflected from the parabolic reflector. ... | 09/26/1989 |
| 4858091 | Luminaire with uplight control An improved luminaire having uplight control to provide uniform ceiling illumination and downward light control below horizontal to uniformly distribute downward light with the added feature of eliminating glare between the 60°-90° vertical.... | 08/15/1989 |
| 4839781 | Reflector/refractor A reflector/refractor device is provided for use with a variety of lighting fixtures and light sources. The reflector/refractor device includes a body having a predetermined profile and defining a cavity with the body having an inside surface and an outsi... | 06/13/1989 |
| 4823246 | Shallow indicator light for a motor vehicle An indicator light for a motor vehicle, the light being of the type comprising a substantially point light source (10) and a flat closure glass (20), situated in front of the source, together with beam-forming means for forming a beam of light rays (x'x) ... | 04/18/1989 |
| 4816976 | High efficiency luminaire with high angle brightness control A high efficiency luminaire possessing high angle brightness control. Transverse high angle brightness control is provided by a substantially parabolically shaped reflector and longitudinal high angle brightness control is provided by a trough like lens a... | 03/28/1989 |
| 4785385 | Traffic light lens A lens (16) suitable for use with traffic lights has a body portion (20) that is a segment of a sphere and a mounting or sealing ring (21) at the periphery of the body portion. An array of lenticular elements (22) is formed on the concave inner surface of... | 11/15/1988 |
| 4703403 | Post top luminaire A luninaire adapted to be mounted at the top of a post and to direct light below a horizontal plane is disclosed. A housing element preferably of a polycarbonate material comprises a housing for an electrical system and a refractor means having an interio... | 10/27/1987 |
| 4698734 | Lensed indirect luminaire with side angle brightness control An indirect luminaire which has an opaque housing that masks light directed downwardly of the luminaire is provided with an elevated light source, that is, a light source which is elevated relative to the side walls of the luminaire housing. Luminaire len... | 10/06/1987 |
| 4667275 | Luminaire for indirect lighting The luminaire includes a source of light in an opaque housing which extends beneath the source and upwardly about the sides of the source to hide the source from direct view from a horizontal line of sight even with the source. A lens is mounted to the ho... | 05/19/1987 |
| 4660131 | Method for indirect lighting A method for indirectly illuminating an interior space is disclosed wherein a laterally extended overhead distribution of light is produced from a source of indirect lighting, such as a fluorescent indirect luminaire, by directing a portion of the source ... | 04/21/1987 |
| 4638411 | Modular high-intensity elevated runway edge or threshold light A modular high-intensity elevated runway edge or threshold light having a glass outer dome containing two oppositely disposed prisms therein, sealed to said cover and fixedly positioned with respect to two complementary inner prisms surrounding a light so... | 01/20/1987 |
| 4573111 | Linear light passing media having certain striped characteristics A linear light passing media, typically a linear prismatic lens or a linear diffuser strip, is provided with linear areas of coloration to give a striped effect to the media. Color or neutral stripes are provided to areas of the media that are observable ... | 02/25/1986 |
| 4559589 | Lighting fixture with a concave reflector, such as a tail, warning or signal light etc. Lighting fixture including an enclosure, means disposed in the enclosure for supplying a central source of light therein, a concave, generally parabolic reflector for directing a main beam of light out of the enclosure from the source generally along a gi... | 12/17/1985 |
| 4521836 | Elevated airport runway, taxiway, or threshold edge light with sealed glass dome An elevated airport runway, taxiway, or threshold edge light with a glass dome that is so positioned with respect to the light source so as to correct for variations in thickness of the base of the glass dome as the result of the glass-making process. The... | 06/04/1985 |
| 4517630 | Motor vehicle headlight with condensing lens and diaphragm The optic axis of a vehicle headlight comprises a reflector, an incandescent helix and a convergent lens. The reflection surface of the reflector is parabolic in the horizontal midplane section and is elliptical in vertical median section. A narrow band o... | 05/14/1985 |
| 4506316 | Par spot lamp A spot lamp having a lens in the form of a curved member having an inner surface with a series of radially disposed flutes formed therein defining a fluted portion which surrounds a centrally disposed stippled portion. The flutes each extend linearly from... | 03/19/1985 |
| 4488208 | Low brightness lens for circular fluorescent lamps A transparent lighting diffuser panel is provided for circular gas discharge lamps and having an inner surface, facing the lamp, comprising a generally cylindrical toroidal fresnel lens with the optical centerline of the lens approximately equal to the la... | 12/11/1984 |
| 4484254 | PAR Flood lamp A flood lamp having a lens with a series of concentrically disposed fluted rings on the internal lens surface in combination with an outer concentric ring adjacent to and wider than any one of the fluted rings and containing a plurality of semi-spherical ... | 11/20/1984 |
| 4473872 | Par spot lamp A spot lamp having a lens with a series of concentrically disposed fluted rings on the internal lens surface in combination with an outer concentric ring adjacent to and wider than any one of the fluted rings and having a stippled surface. The spot lamp r... | 09/25/1984 |
| 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 |
| 4450509 | Lanterns for area lighting The invention provides a lantern for an area light, particularly one having a cut-off light distribution. A central area of a transparent or transluscent bowl of the lantern has in alternation externally facing reflecting prisms and flats. There are suffi... | 05/22/1984 |
| 4393440 | Cover assembly for airport guidance light A cover assembly comprising a cover having a plurality of holes for securement on top of a light base, said cover having a central top portion formed with at least one window for the exit light beam and an upwardly inclined ramp in front of said at least ... | 07/12/1983 |
| 4390930 | Indirect lighting fixture with improved light control A long, linear indirect lighting fixture of a relatively small cross-sectional dimension which is mounted above eye level is comprised of lamps secured within an elongated housing, and a reflector and side lenses which direct and refract the greatest port... | 06/28/1983 |
| 4371916 | Motor-vehicle lamp with base area illumination A lamp for motor-vehicles wherein the base area of the prismatic cap is encompassed by a transparent plate in direct optical contact with the base area and adapted to direct into its interior the light emerging from the base area in a substantially radial... | 02/01/1983 |
| 4177505 | Indicator light with incorporated catadioptric element for automobile The present invention relates to an indicator light, particularly for an automobile, comprising a catadioptric element such that its position in the light and the preferred orientation of certain of its catadioptric prisms allow a zone adjacent the zone n... | 12/04/1979 |
| 4153928 | Motor vehicle tail lamp assembly A lens assembly for a motor vehicle tail lamp assembly that gives the latter the appearance of a substantially black lighting unit. The lens assembly includes an inner lens and an outer lens each of which is formed with horizontally extending V-shaped rib... | 05/08/1979 |
| 4152756 | Railroad crossing signal lamp An improved railroad crossing signal includes a deep dish parabolic reflector and an essentially flat plastic lens angled forward at the top relative to the axis of the reflector. The lens includes prism elements for laterally dispersing parallel light fr... | 05/01/1979 |
| 4118763 | Variable transmission prismatic refractors Luminaire globe has external prisms formed to provide controlled amount of emitted light in various portions of the globe. The prism comprises a combination of right angle reflecting surfaces and light transmitting surfaces contoured to provide the desire... | 10/03/1978 |
| 4115843 | Warning lamp A warning lamp comprising a housing having an annular wall, a bulb having a filament within the confines of the annular wall and a lens closing the end of the annular wall. The lens has a front wall and a peripheral wall surrounding the front wall and tel... | 09/19/1978 |
