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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 4787013 | Intermediate range intensity modification of gaussian beam using optical integration means An optical projection apparatus is disclosed for generating a planar light beam of substantially uniform intensity from a nonplanar multi-element light source 10 projecting a beam having a generally Gaussian intensity distribution. Light from the source 1... | 11/22/1988 |
| 4768133 | Lighting device A lighting device includes a light pipe and a tungsten halogen reflector lamp transmitting light beams parallel with the axis of the light pipe. This allows the use of a dichroic filter which provides for an increased transmission whereby low wattage lamp... | 08/30/1988 |
| 4737896 | Illumination device An illumination device is provided which comprises a light source, a first light-deflecting means for converting the rays emitted from the light source into parallel rays and a second light-deflecting means for directing the parallel rays to an object to ... | 04/12/1988 |
| 4698730 | Light-emitting diode A light-emitting element of a light-emitting diode is mounted on a lead frame, stem or substrate, and is molded with resin so as to form a lens portion. A cap made of a light-transparent resin and having a hollow portion at the center thereof and an outer... | 10/06/1987 |
| 4689728 | Lamp assembly A lamp assembly having the lamp housing for containing a bulb and with an opening, optical elements installed in the housing in such a manner as to convert the light from the bulb into parallel rays of light, a condenser lens installed in the opening of t... | 08/25/1987 |
| 4680684 | Bed reading lamp, particularly for hospital beds A bed reading lamp, particularly for hospital rooms, includes a lamp housing attachable to a wall of a room, the lamp housing including at least one cover which closes a light outlet opening provided in the lower area of the housing and which is transluce... | 07/14/1987 |
| 4669034 | Non-glare device for large surface light emitting means A non-glare screen is assembled of prismatic rings stacked one on the other and coaxially enclosing a light emitting surface. Each ring has a cross-section of a right triangle. One leg of the triangle is perpendicular to the axis of the light emitting sur... | 05/26/1987 |
| 4656562 | Optical integrator means for intensity modification of Gaussian beam Optical projection apparatus is disclosed for generating a planar light beam of substantially uniform intensity from a nonplanar multi-element light source projecting a beam having a generally Gaussian intensity distribution. In the preferred embodiment, ... | 04/07/1987 |
| 4644455 | Vehicle lamp assembly A vehicle lamp assembly comprises a light source and a light transmitting member carrying a plurality of strips formed of a light absorbing material. Baffle elements, formed of transparent material and each having an opaque coating on one of its side face... | 02/17/1987 |
| 4644454 | Lensed indirect luminaire having improved light distribution control An elongated indirect luminaire is provided with two separate lens elements in the form of a primary trough-shaped lens cover supported over the luminaire's light source and at least one secondary lens strip supported laterally of the primary lens cover. ... | 02/17/1987 |
| 4593345 | Panoramic optical system with very sharp beam control A panoramic light emitter of an omnidirectional horizontal light beam with very sharp cut-off in the vertical plane is disclosed. The sharp cut-off prevents interference near airports. High average powers are attainable because the light source can be dis... | 06/03/1986 |
| 4581682 | Prismatic sympathetic flash barriers A miniaturized multilamp photoflash array including a transparent plastic cover member with the cover member having at least one prismatic barrier divider extending outwardly therefrom between a pair of parallel arrayed flashlamps. The prismatic barrier d... | 04/08/1986 |
| 4562515 | Calibrated area source task light A task light for mounting relatively close to an underlying work area has an elongated fluorescent bulb extending across the work area, a wide, flat and elongated prismatic lens underlying and adjacent the bulb for distributing light over the entire work ... | 12/31/1985 |
| 4542449 | Lighting panel with opposed 45° corrugations The lighting panel has a first face for receiving light from a source and a second face. The panel includes a first and a second sheet of transparent dielectric material. Each sheet has a smooth surface on one side and is corrugated on the other side. The... | 09/17/1985 |
| 4542448 | Lamp assembly Lamp assembly consisting of a housing with an opening containing a bulb, a frenel lens, a condenser lens and an outer lens installed in the housing nearest to the opening which allow the beams from the condenser lens to pass through plurality of portions ... | 09/17/1985 |
| 4539625 | Lighting system combining daylight concentrators and an artificial source A combined lighting system for a building interior includes a stack of luminescent solar concentrators (LSC), an optical conduit made of preferably optical fibers for transmitting daylight from the LSC stack, a collimating lens set at an angle, a fixture ... | 09/03/1985 |
| 4538216 | Lighting apparatus An lighting apparatus including a housing having an opening, a light source received in the housing and a light transmitting-cover fixed at the opening of the housing and through which light rays are projected from the light source. The light transmitting... | 08/27/1985 |
| 4536832 | Replaceable light source assembly A replaceable light source assembly is particularly designed for use in a projector housing with sources such as an HMI arc lamp or tungsten halogen lamp where the light source is contained within an envelope. Basically, the light source is closely spaced... | 08/20/1985 |
| 4530041 | Signal lamp with a movable slit plate A signal lamp having in its housing with an opening, a bulb, an optical elements installed in the housing for converting the light of the bulb into parallel rays of light, a colored lens being colored differently in plurality of regularly disposed pattern... | 07/16/1985 |
| 4528617 | Light distribution apparatus Compact devices for distributing light from a small area source to evenly light a larger area each comprise a member having a first plurality of surfaces which intercept respective slices of a light beam extending in a first direction and internally refle... | 07/09/1985 |
| 4521835 | Flexible elongated lighting system A lightweight emergency lighting system capable of arrangement into various subjective configurations is provided. A housing member supports a plurality of individual lighting elements mounted on a common semi-rigid bus bar. The upper configuration of 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 |
| 4510555 | Ornamental lighting device An ornamental lighting device includes a plurality of optical fibers to which condensed light from a light source is distributed through a fiber optic cable. The optical fibers are arranged parallel to each other and held between a pair of light transmitt... | 04/09/1985 |
| 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 |
| 4504889 | High intensity security flashlight with duffusing parabolic reflector Although small enough to fit in a purse, this flashlight operates on six volts using a full-size flashlight bulb and casts a bright and quite-uniform beam of light, primarily for brief uses at relatively short range. The uniformity of the beam is obtained... | 03/12/1985 |
| 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 |
| 4462068 | Luminaire with improved lens structure A new and improved luminaire combination is disclosed having a novel lens structure formed with a generally horizontal first lens surface and a generally vertical second lens surface with a generally horizontal flange formed on the second lens surface. Th... | 07/24/1984 |
| 4456948 | Motor vehicle headlamp with a narrow outlet window A motor vehicle headlamp comprising in combination an optical system for recovering flux having a rectilinear focal segment and an optical system for rectifying images having a focal segment coinciding with the former and able to produce a beam of rays of... | 06/26/1984 |
| 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 |
| 4446511 | Automotive lamp unit An improved automotive lamp unit is provided having a shape to reduce the air resistance when the automotive vehicle moves. Specifically, the lens member of said automotive lamp construction is aligned in a non-vertical direction when bonded directly to t... | 05/01/1984 |
| 4410932 | Electric lamp A table, wall, ceiling or desk lamp is provided with a translucent plastic shade having a top reflector at its upper end and bonded at its lower end to the outer periphery of a prismatic diffuser whereby the shade, top reflector and diffuser may be remove... | 10/18/1983 |
| 4399358 | Photoelectric digital measuring instrument having multiple light sources A photoelectric measuring apparatus includes a measuring scale and a scanning unit including at least one photosensitive element for generating a scanning signal in response to light incident on the scanned region of the scale. First and second light sour... | 08/16/1983 |
| 4384316 | Outdoor luminaire with readily separable, two-part housing A luminaire particularly suited for outdoor applications (e.g., for illuminating roadways and alleyways) and including a two-part housing wherein one of the parts (the base) is metallic and the other (refracting portion) is of lightweight (plastic) materi... | 05/17/1983 |
| 4383290 | Signal lamp 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 p... | 05/10/1983 |
| 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 |
| 4345303 | Optical systems permitting controlled shifting of the beam pattern in headlamps, especially for vehicles A vehicle headlamp is constructed with its reflector and front lens adapted to be fixedly mounted in the bodywork of the vehicle, but incorporates a beam deflecting system, in order that the direction of the beam may nonetheless be adjusted. In one form, ... | 08/17/1982 |
| 4330814 | Floor relampable luminaire Luminaire has refractor with a hinged door to provide access to the enclosed lamp for re-lamping operations. A prismatic optical device is provided on the luminaire to indicate when the door is fully closed on the refractor.... | 05/18/1982 |
| 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 |
