Patent · US Expired

Headlamp, particularly antidazzle headlamp for motor vehicles

US4607318A · kind A · utility

7Cited by

11References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Gerhard Lindae · Leonberg, DE
Peter Perthus · Stuttgart, DE
Heinz Rein · Reutlingen, DE

Key dates

Filing date	Dec 12, 1984
Grant date	Aug 19, 1986
Priority date	—
Expiry date	Dec 12, 2004

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21S41/28
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A headlamp emitting dimmed or antidazzle light beam for motor vehicles, includes a paraboloid reflector including a transversely arranged coiled heating filament and a transparent grooved disc for diffusing or refracting light emitted by the reflector. The light means include eight light refracting fields arranged in diametrically opposed parts. Light rays passing through these fields are emitted from predetermined zones on the reflector so as to produce an improved light distribution of the low beam.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.