Operating method for a LIDAR system, control unit, LIDAR system, and device

US12000933B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Oliver Kern · Renningen, DE
• Gor Hakobyan · Stuttgart, DE
• Robert Korn · Karlsruhe, DE

Key dates

• Filing date: Jun 4, 2019
• Grant date: Jun 4, 2024
• Expiry date: Dec 9, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S17/58
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An operating method for a LIDAR system. A laser device that includes an optical modulator optically coupled thereto for receiving and modulating the frequency of non-modulated light emitted by the laser device, using a frequency modulation function, and for outputting frequency-modulated light as primary light into a visual field, is used as a light source unit. Secondary light received from the visual field and non-modulated light of the laser device are optically superimposed to form superimposed detection light. The superimposed detection light is photoelectrically detected by generating and outputting a primary electrical detection signal that is representative of the detection light. For the evaluation, the primary electrical detection signal is electrically mixed with an electrical signal that is representative of the frequency modulation function of the optical modulator to form a first evaluation signal, and is assessed.