Patent · US Expired

Headlamp for motor vehicles

US5260856A · kind A · utility

7Cited by

6References

17Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Peter Perthus · Stuttgart, DE
Jürgen Stein · Wuppertal, DE
Tilman Spingler · Dessau, DE
Friedrich Schmied · Pfullingen, DE
Peter Kusserow · Tegernsee, DE

Key dates

Filing date	Jan 27, 1992
Grant date	Nov 9, 1993
Priority date	—
Expiry date	Jan 27, 2012

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21S41/55
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A headlamp for motor vehicles has a reflector, a discharge lamp located in front of the reflector, a glass envelope surrounding the discharge lamp and being transparent in certain sections to light of specific wavelengths, a lamp carrier which holds the discharge lamp so that the discharge lamp is arranged in a space limited at least by the lamp carrier and the glass envelope. The glass envelope blocks UV light in UV-A, UV-B and UV-C wavelength range.

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