The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2022
Filed:
Jan. 14, 2019
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Helmut Erdl, Flintsbach, DE;
Abdelmalek Hanafi, Munich, DE;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
A lighting device for a motor vehicle has a laser light source for producing laser light and a converting unit having a reflective converting layer, at which laser light originating from the laser light source is directed, during operation of the lighting device, such that a white light source is produced at the converting layer. A reflector is provided, which has an elliptical reflection surface, which corresponds to a portion of an ellipsoid containing a vertex of the ellipsoid. The reflector is shaped and arranged such that a first focal point of the ellipsoid lies within the white light source and the white light source is optically imaged in the form of a real intermediate image, which includes a second focal point of the ellipsoid, by way of the reflector. The lighting device also has a secondary optical unit, by which a light distribution in the environment of the motor vehicle is produced from the real intermediate image. An aperture for limiting the light distribution in the environment of the motor vehicle is arranged at the location of the real intermediate image.