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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 4680678 | Lighting fixture for vehicle 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 ... | 07/14/1987 |
| 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 |
| 4670818 | Projection headlight for motor vehicles A projection headlight is provided for a motor vehicle wherein a projection lens is encased by a disk-shaped covering having a size larger than the surface area of the lens. A light passage area is provided in the covering and portion of the covering outs... | 06/02/1987 |
| 4660129 | Front optical unit for motor vehicles A front optical unit for motor vehicles, in which a headlamp is closed by a transparent front body constituted by a lens of glass disposed in front of a rear body of the headlamp, and by a frame of plastics material rigidly connected thereto; the frame su... | 04/21/1987 |
| 4633377 | Lighting fixture with square beam pattern A light-distributing diffuser for an electrical lighting fixture. The diffuser is rectangular in transverse section and is generally in the shape of an inverted truncated pyramid having an enlarged base and a reduced, outwardly-extending end. The outwardl... | 12/30/1986 |
| 4620268 | Low-profile modular lightbar assembly A warning light assembly suitable for vehicle roof mounting is built around an I-beam structural member and includes lens elements which engage and are readily positionable on the beam so as to span the flanges at both sides thereof. The light assembly ma... | 10/28/1986 |
| 4595971 | Vented luminaire fixture The present invention provides a luminaire fixture having a generally cup shaped upper housing casting. A bowl shaped reflector is mounted thereto. The lower rim of the upper housing includes a flange extending outwardly and downwardly therefrom. The uppe... | 06/17/1986 |
| 4574339 | Interlocking lens structure for a signal lamp An interlocking lens structure comprising two opposed lens pieces is disclosed. Each of the lens pieces has a top portion including an edge having a first region formed with a groove and a second region formed with a projection. The first region of each o... | 03/04/1986 |
| 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 |
| 4545001 | Sealed lens member for use in a motor vehicle lighting system A lens member for use in a motor vehicle and adapted for being mounted in a recess within a front, contoured surface of the motor vehicle. The system especially designed for using the invention includes a plurality of separate lighting modules, each in tu... | 10/01/1985 |
| 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 |
| 4500947 | Tri spherical lens assembly A marine navigation light having a first curved segment, a second curved segment, a vertical junction therebetween, and a single filament vertical light source is improved by reshaping the surfaces of the curved segments adjacent the junction so that ligh... | 02/19/1985 |
| 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 |
| 4459643 | Artificial light source arrangement An artificial light source arrangement includes a tubular light source whose horizontal light distribution curve takes on a substantial circle, a plurality of elongated linear lenses arranged parallel with the light source, and a plurality of photoconduct... | 07/10/1984 |
| 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 |
| 4387414 | Dial illuminating system Discloses an improved instrument dial illuminating system including a light transmitting optical element formed with a thickness diminishing in the vicinity of one edge of the optical element to the vicinity of an opposite edge of the element and with a p... | 06/07/1983 |
| 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 |
| 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 |
| 4343032 | Light sensitive electrical device A housing having means for connecting to a conventional electric outlet. The housing is provided with a lower portion having a printed circuit and a transparent lens. The circuit includes a photo conductive cell sensitive to the light through the lens. Th... | 08/03/1982 |
| 4305119 | Vehicle headlamp A vehicle headlamp has a reflector provided with a reflective area lying on a surface defined by rotating an ellipse about an axis which passes through the inner focus of the ellipse and which is inclined an acute angle (1°-2°) to the focal axis of the ... | 12/08/1981 |
| 4286312 | Portable lighting apparatus comprising a diffusing lens This portable lighting apparatus which comprises a case having a parabolic reflector, a bulb whose filament is situated substantially at the focus of the parabolic reflector and a square or rectangular shaped diffusing lens fixed at the periphery of the r... | 08/25/1981 |
| 4209825 | Lamp A lamp having a treated lense for reducing peripheral glare thereby making the lamp useful as a driving light, fog light or spotlight. The treated lense is provided with opaque pigment around the periphery of the lense and the center portion thereof to fo... | 06/24/1980 |
| 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 |
| 4189709 | Modular housing assembly for vehicle warning light system A modular housing assembly for housing a vehicle warning light system and intended for mounting across the roof of a police car or other vehicle on which warning lights are required. The housing comprises a plurality of transparent plastic panels of modul... | 02/19/1980 |
| 4039816 | Arrangement for transmitting light energy The arrangement transmits light energy from a light source by means of a stack of light-conducting members having surfaces which are approximately parallel to a common plane. The members are arranged around the light source and their outward ends define r... | 08/02/1977 |
