Patent · US Active

Illumination apparatus for a motor vehicle

US12158253B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

Carl Zeiss Jena GmbH · DE

Inventors

Martin Mügge · Geseke, DE
Carsten Hohmann · Warstein, DE
Alfons Michaelis · Borchen, DE
Christoph Erler · Jena, DE
Siemen KÜHL · Jena, DE
Petr Vojtisek · Jena, DE

Key dates

Filing date	May 30, 2023
Grant date	Dec 3, 2024
Priority date	—
Expiry date	Jun 28, 2043

Classification

Technology area (CPC G)Physics
CPC primaryG03H2223/16
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An illumination apparatus for a motor vehicle comprises: a light source, an optical waveguide with an incident surface and a reflective region; and a hologram arranged on or in the optical waveguide. The illumination apparatus is configured such that light emitted by the light source enters the incident surface of the optical waveguide in the direction of the reflective region, is reflected by the reflective region inside the optical waveguide in the direction of the hologram and interacts with the hologram. The average distance between the light source and the incident surface is at least half as great as the average distance between the reflective region and the hologram.

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