Low beam or fog headlamp for motor vehicles

Details Low beam or fog headlamp for motor vehicles Low beam or fog headlamp for motor vehicles

1986-11-03

1989-01-03

Scott, Samuel

Illumination

Light source and modifier

Including reflector

362309, 362310, 362329, 362338, F21M 300

Patent

active

047961716

ABSTRACT:
A low beam headlamp for motor vehicles includes an objective made of pressed glass whose one side is formed as aspheric partial surfaces of identical or different aspherity. The partial surfaces are staggered in the direction parallel to the optical axis of the objective and the resulting step has rounded edges. The aspheric partial surfaces adjust light distribution to achieve a desired quality of the light-dark boundary zone projected on the driveway, and provide corrected color fringes of the passing light beam.

REFERENCES:
patent: 1539090 (1925-05-01), King
patent: 4100594 (1978-07-01), Gould
patent: 4446511 (1984-05-01), Sands
patent: 4520434 (1985-05-01), Birt
"The Magazine of Light", Issue No. 7, 1941, pp. 24, 25.

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