Patent · US Active

Illumination device for a motor vehicle

US11732863B2 · kind B2 · utility

0Cited by

1References

16Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Michael Mueller · Gifhorn, DE
Daniel Niebler · Munich, DE
Mohamed Rabeh · Munich, DE
Harald Schaffler · Alpenrod, DE

Key dates

Filing date	Mar 24, 2021
Grant date	Aug 22, 2023
Priority date	—
Expiry date	Mar 24, 2041

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21W2106/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An illumination device for a motor vehicle includes at least one light source and an elongated waveguide which is delimited along the length thereof by a lateral surface. The waveguide is configured to guide light from the at least one light source along a light propagation direction in a totally reflective manner, the light propagation direction corresponding to the length of the waveguide. The light of the at least one light source can be coupled into the waveguide via a coupling surface at an end face of the waveguide, and a decoupling structure is provided in the lateral surface of the waveguide for decoupling light, which exits the waveguide via an exit region of the lateral surface along the light propagation direction, thereby overriding the total reflection condition.

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