Motor vehicle headlight

Details Motor vehicle headlight Motor vehicle headlight

1987-07-20

1988-02-02

Nelli, Raymond A.

Illumination

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

Tie rod element controlled

362268, 362267, 362310, F21V 2900

Patent

active

047231980

ABSTRACT:
A motor vehicle headlight including a parabolic reflector, a cover secured to the reflector and a lighting capsule located within the reflector. The capsule includes an envelope having a coiled filament located therein and including a substantially cylindrical configuration. Optimum light output is attained by providing the reflector with a short focal length (0.2 inch to about 0.5 inch) and by utilization of a coiled filament structure having a length to diameter ratio of less than about 2:1. The result is a headlight having an overall vertical height of only about two inches and a corresponding frontal area of extremely small size (between 3.0 and 7.5 square inches).

REFERENCES:
patent: 2748255 (1956-05-01), Decker
patent: 3392278 (1968-07-01), Hammerstein
patent: 3408491 (1968-10-01), George
patent: 4336578 (1982-06-01), Bradley et al.
patent: 4446511 (1984-05-01), Sands
patent: 4450511 (1984-05-01), Micha
patent: 4475148 (1984-10-01), Tomforde
patent: 4480296 (1984-10-01), Gagnon et al.
patent: 4545001 (1985-10-01), English et al.

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