Ribbed lenses for headlamps

Details Ribbed lenses for headlamps Ribbed lenses for headlamps

1979-03-06

1981-04-07

Corbin, John K.

Illumination

Light modifier

Refractor

362338, 362340, F21M 304

Patent

active

042610311

ABSTRACT:
A motor vehicle headlamp lens has two zones A1 and B containing ribs of different width to produce different amounts of lateral spreading of the headlamp beam. Between these zones a transition zone A2 is provided where a gradual change in the width of the ribs occurs. In the transition zone there are provided novel separating surfaces between the ribs having one surface at an angle to the general plane of the lens which act as a prism to deflect light passing therethrough in a downward direction. In zones A1 and B, and in transition zone A2 the total thickness e of the lens at the crest of any rib is constant.

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