Headlight lens with external light sensitivity

Details Headlight lens with external light sensitivity Headlight lens with external light sensitivity

1992-03-24

1993-07-20

Cole, Richard R.

Illumination

Vehicle steering mechanism or element moves pivoted lamp or...

Tie rod element controlled

362276, 362458, F21M 302

Patent

active

052287670

ABSTRACT:
A headlight lens is fabricated from photochromic glass so that the headlight is not noticeable during daylight hours when subjected to ultraviolet light. At night, in the absence of ultraviolet light, the lens is transparent and emits the light from inside the headlight.

REFERENCES:
patent: 2499555 (1950-03-01), Wronkowski
patent: 2734129 (1956-02-01), Kahla
patent: 2807711 (1957-09-01), McDonald
patent: 4217391 (1980-08-01), Kaltz
patent: 4225904 (1980-09-01), Linder
patent: 4261656 (1981-04-01), Wu
patent: 4306772 (1981-12-01), Harrigan
patent: 4889413 (1989-12-01), Ormsby et al.
patent: 5055982 (1991-10-01), Johnson

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