Patent · US Active

Lighting device for vehicles

US11193646B2 · kind B2 · utility

0Cited by

15References

8Claims

0Family size

Assignees

Hella KGaA Hueck & Co. · DE
Covestro Deutschland AG · DE

Inventors

Martin Muegge · Geseke, DE
Carsten Hohmann · Warstein, DE
Rainer Hagen · Leverkusen, DE
Guenther Walze · Cologne, DE
Thomas Faecke · Via Enrico Fermi, US

Key dates

Filing date	Dec 18, 2015
Grant date	Dec 7, 2021
Priority date	—
Expiry date	Dec 18, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG03H2222/34
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A lighting device for vehicles, in particular a signal light, with a light source for emitting a light beam and an optical unit associated with the light source for producing a predetermined light function, the optical unit having a holographic element and a lens arranged in the main emission direction in front of the holographic element, the holographic element comprising such a diffraction structure that the light beam emitted from the light source onto the holographic element is varied according to a predetermined illumination pattern such that the holographic light beam lights an illumination surface of the lens to generate the light function.

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