US Patent No. 10,989,384


Patent No. 10,989,384
Issue Date April 27, 2021
Title Lighting Device For A Motor Vehicle
Inventorship Helmut Erdl, Flintsbach (DE)
Abdelmalek Hanafi, Munich (DE)
Assignee Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)

Claim of US Patent No. 10,989,384

1. A lighting device for a motor vehicle, comprising:a source of laser light including a plurality of laser diodes;
a vector scanner, on which a light bundle emanating from a light of the source of laser light impinges;
wherein the vector scanner varies a position of the light bundle and moves a spot of light, which is generated from the light bundle, at a distance from the lighting device in order to generate a predetermined distribution of light, wherein at least one of a scan speed, at which the spot of light is moved, and a scan path, along which the spot of light is moved, is variable by the vector scanner;
wherein the vector scanner includes one or more MEMS components which each contain a semiconductor chip which is surrounded by a housing and within which a single mirror is integrated, on which the light bundle impinges, wherein the MEMS component is configured such that the single mirror is tilted continuously for moving the spot of light;
wherein a temperature sensor for detecting a temperature of a respective MEMS component is provided in the respective MEMS component; and
a control device configured to control at least one of electrical power of the source of laser light, and a cooling element arranged on the respective MEMS component, as a function of the detected temperature of the respective MEMS component in such a manner that the detected temperature does not exceed a predetermined temperature threshold value.