Patent · US Expired

Halogen incandescent lamp for motor vehicles

US6798138B2 · kind B2 · utility

2Cited by

6References

9Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Rolf Gervelmeyer · Geilenkirchen, DE
Heinz Schloemer · Heinsberg, DE
Ralf Schaefer · Cesson-Sévigné, FR
Leo Wings · Eschweiler, DE
Franz-Josef Brueckmann · Würselen, DE

Key dates

Filing date	May 18, 2001
Grant date	Sep 28, 2004
Priority date	—
Expiry date	Nov 11, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a halogen incandescent lamp for motor vehicles with an elongate bulb which is closed at one end and has a vacuumtight pinch seal at the other end, with at least one incandescent element arranged in the bulb, with a lamp cap connected to the pinch seal, and with current supply leads which are passed through the pinch seal to the incandescent element, with an annular optical filter which is provided at the closed end of the bulb. It is possible with such a halogen incandescent lamp in a simple manner both to change the subjective impression of the generated light and to improve the objective properties through emphasizing of a desired region of the spectrum.

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