Motor vehicle headlamp with concave mirror reflectors

US10139071B2 · kind B2 · utility

Assignee

• Automotive Lighting Reutlingen GmbH · DE

Inventors

• Henning Hogrefe · Neckartenzlingen, DE
• Doris Boebel · Stuttgart, DE

Key dates

• Filing date: Dec 21, 2015
• Grant date: Nov 27, 2018
• Expiry date: Jul 10, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F21S41/663
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A motor vehicle headlamp comprising a first semiconductor light source and a first concave mirror reflector, a second semiconductor light source and a second concave mirror reflector, and a third semiconductor light source and a third reflector. Each semiconductor light source includes at least two separate semiconductor chips. The second semiconductor light source includes a first group of semiconductor chips and a second group of semiconductor chips, and a control circuit, which operates either the first semiconductor light source without the third semiconductor light source, or the third semiconductor light source without the first semiconductor light source, operates at least a first portion of the semiconductor chips of the second semiconductor light source together with the first semiconductor light source, and operates at least a second portion of the semiconductor chips of the second semiconductor light source together with the third semiconductor light source.