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:
Sep. 15, 2026
Filed:
Oct. 17, 2024
Robert Bosch Gmbh, Stuttgart, DE;
Holger Joachim Mönch, Vaals, NL;
Sven Bader, Neu-Ulm, DE;
Jochen Hellmig, Valkenswaard, NL;
Hans Spruit, Waalre, NL;
Pieter Hoeven, Meierijstad, NL;
Stephan Gronenborn, Aachen, DE;
ROBERT BOSCH GMBH, Stuttgart, DE;
Abstract
A device for producing a light barrier includes a laser unit with at least one vertical cavity surface emitting laser (VCSEL), a photodiode, and a reflector. The reflector is configured to reflect light emitted by the VCSEL, such that a light reflection produced as a result is received by the photodiode, producing a detection signal, from which a direct current signal component is subtracted so that an alternating current component is provided as an evaluation signal. The evaluation signal has a higher signal-to-noise ratio than the detection signal, such that an evaluation device connected to the VCSEL is able to detect an interruption of the light reflection if no self-mixing interference is present.