Patent · US Expired

Reflector for dimmed or dimmable motor vehicle headlights

US4945454A · kind A · utility

19Cited by

1References

19Claims

0Family size

Assignee

Hella KGaA Hueck & Co. · DE

Inventors

Wolfgang Bunse · Bielefeld, DE
Hans-Otto Ernst · Lippstadt, DE
Heinz Droste · Erwitte, DE
Franz-Josef Kalze · Harsewinkel, DE
Wolfgang Peitz · Warstein, DE

Key dates

Filing date	Mar 9, 1989
Grant date	Jul 31, 1990
Priority date	—
Expiry date	Mar 9, 2009

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21S41/336
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A reflector for a dimmed or dimmable motor vehicle headlight is divided into an asymmetrical wedge-shaped sector, an upper sector, and a lower sector which are stepped axially from on another. The reflection surface is thereby formed such that a desirable light distribution is achieved without a correcting lens in horizontal and vertical areas perpendicular to a middle axis of the headlight. The desired light distribution of the asymmetrical wedge-shape sector is such that a corresponding point of every reflected light-filament image of each arbitrary point of the asymmetrical wedge-shaped reflection surface is positioned immediately near a prescribed borderline, such as a legislatively mandated borderline.

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