Patent · US Expired

Dimmed motor vehicle headlight

US4727458A · kind A · utility

25Cited by

5References

29Claims

0Family size

Assignee

Westfalische Metall Industrie KG Huec & Co. · DE

Inventors

Heinz Droste · Erwitte, DE
Wolfgang Peitz · Warstein, DE
Heinrich Schäfer · Rosdorf, DE

Key dates

Filing date	May 30, 1986
Grant date	Feb 23, 1988
Priority date	—
Expiry date	May 30, 2006

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21W2103/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention refers to a motor vehicle projection headlight, where the projection lens is in part covered by a light transmitting plate. The light transmitting plate has edge regions which are of a wider diameter than the lens. An annular light impermeable cover, which surrounds the lens immediately and at a small distance, is disposed at a distance to the edge region of the light permeable plate. The surface of the cover toward the light transmitting plate is of high reflectivity.

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