Lamp assembly for emitting a beam of light at an angle to its optical axis
First Claim
1. A lamp assembly for emitting a beam of light rays in a direction at a predetermined angle relative to its optical axis, the lamp assembly comprising:
- (a) a light source for producing light;
(b) a generally planar inner lens member disposed perpendicular to the optical axis of the lamp assembly and configured to provide a Fresnel lens for making the rays of light from the light source parallel to the optical axis of the lamp assembly; and
(c) a generally planar outer lens member disposed parallel to the inner lens member and farther away from the light source than the inner lens member, the outer lens member being formed to include a pluarlity of prismatic lens segments for reflecting substantially all of the incident light rays from the inner lens member in a direction parallel to the axis of said beam.
1 Assignment
0 Petitions
Accused Products
Abstract
A lamp assembly is disclosed as adapted for use as a supplemental high mounted stop lamp to be installed just interiorly of a steeply slanting rear window of a motor vehicle. A lamp housing has a light source disposed therein, and two generally planar lens members are mounted at the open front end of the lamp housing in parallel spaced relation to each other. The inner lens member is configured to provide a Fresnel lens effective to render the light rays from the source parallel to the principal axis of the lamp assembly, thereby superseding the paraboloidal reflector heretofore employed to the same end. The outer lens member has a plurality of prismatic lens segments for internally reflecting the parallel rays from the inner lens member in a predetermined direction at a considerable angle to the lamp assembly axis. Preferably, the two lens members are further so molded as to impart both lateral and vertical divergence to the light beam emitted by the lamp assembly.
45 Citations
11 Claims
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1. A lamp assembly for emitting a beam of light rays in a direction at a predetermined angle relative to its optical axis, the lamp assembly comprising:
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(a) a light source for producing light; (b) a generally planar inner lens member disposed perpendicular to the optical axis of the lamp assembly and configured to provide a Fresnel lens for making the rays of light from the light source parallel to the optical axis of the lamp assembly; and (c) a generally planar outer lens member disposed parallel to the inner lens member and farther away from the light source than the inner lens member, the outer lens member being formed to include a pluarlity of prismatic lens segments for reflecting substantially all of the incident light rays from the inner lens member in a direction parallel to the axis of said beam. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A high mounted supplemental stop lamp assembly for installation close to a relatively steeply slanting vehicular rear window for throwing a beam of light rays in a direction at a predetermined angle relative to the plane of the vehicular rear window, the lamp assembly comprising:
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(a) a lamp housing having an open front end and adapted to be mounted interiorly of the vehicular rear window with its open front end directed toward said window; (b) a light source mounted within the lamp housing for emitting light rays; (c) a generally planar inner lens member mounted at the open front end of the lamp housing so as to be parallel to the vehicular rear window, the inner lens member being configured to provide a Fresnel lens for passing therethrough the light rays from the light source to provide parallel light rays normal to the plane of said rear window; and (d) a generally planar outer lens member mounted at the front end of the lamp housing and exteriorly of the inner lens member in parallel relation thereto, the outer lens member being formed to include a plurality of prismatic lens segments on its outside surface, said prismatic lens segments being so formed as to reflect substantially all of the incident light rays from said inner lens member in directions parallel to the axis of said beam. - View Dependent Claims (9, 10, 11)
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Specification