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

1988-08-23

1991-05-07

Husar, Stephen F.

Illumination

Light source and modifier

Including reflector

362327, 362332, 362335, F21V 700, F21V 504

Patent

active

050141732

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: 1601688 (1926-09-01), Nystrom
patent: 3431449 (1969-03-01), Hundley
patent: 4100594 (1978-07-01), Gould
patent: 4238817 (1980-12-01), Fratty
patent: 4305119 (1981-12-01), Draper et al.
patent: 4608623 (1986-08-01), Stephano

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