Lens element

Details Lens element Lens element

1980-03-07

1982-06-01

Corbin, John K.

Illumination

Supported by vehicle structure

Condition responsive

362338, 362360, 362361, G02B 308, F21V 504

Patent

active

043324380

ABSTRACT:
A lens element for a vehicle lamp, e.g. a direction indicator lamp, consists of a molded transparent plastic body provided with parallel rows of projections each of which has the form of part of a body of revolution of a cylindrical mid-region and end regions which each have the form of part of the body of revolution of the mid-region.
In order to produce the required light output in the direction of the longitudinal axis of the vehicle in the case where the lens element is used in a lamp assembly having a relatively inefficient reflector, the lens element is provided with a plurality of ribs which extend parallel to the rows of projections and which are longer than the projections. The ribs preferably alternate with the rows of projections and may extend for the whole or only part of the length of the lens element.

REFERENCES:
patent: 1887872 (1932-11-01), Ernst
patent: 3222516 (1965-12-01), Miles

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