Illumination – Light source and modifier – Including reflector
Patent
1978-08-04
1981-06-30
Griffin, Donald A.
Illumination
Light source and modifier
Including reflector
362327, 362339, F21V 502
Patent
active
042765846
ABSTRACT:
An auxiliary automotive headlight intended to secure the visual range in fog, rain, and snow. The filament of the lamp bulb is placed horizontally at the focus of a reflector in the shape of a paraboloid of revolution. At the front of the reflector there is provided a diffuser lens to diffuse the light in the horizontal direction. The diffuser lens has refracting parts which are thicker upwardly so that the light is diffused partially in the vertical direction as well as in the horizontal direction. These refracting parts are arranged according to the light distribution pattern or reflection at the upper part, lower part, diagonally left lower part, and diagonally right lower part around the filament. The refracting part formed according to the lower light distribution pattern has a higher refractive index in the vertical direction than the other parts and a lower refractive index in the horizontal direction than the others.
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Griffin Donald A.
Ichikawa Press Industries Co., Ltd.
Mathews Alan
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