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:
Oct. 07, 2025
Filed:
Nov. 19, 2021
Trumpf Photonic Components Gmbh, Ulm, DE;
Robert Bosch Gmbh, Stuttgart, DE;
Alexander Marc Van Der Lee, Venlo, NL;
Johannes Hendrikus Maria Spruit, Waalre, NL;
Okke Ouweltjes, Eindhoven, NL;
Robert Weiss, Waldbronn, DE;
TRUMPF PHOTONIC COMPONENTS GMBH, Ulm, DE;
ROBERT BOSCH GMBH, Stuttgart, DE;
Abstract
A laser sensor module includes a laser diode configured emit a laser beam, an electrical driver configured to supply the laser diode with a driving current to stimulate emission of the laser beam, a detector, and an optical arrangement configured to focus the laser beam to a focus region. The laser diode is arranged to emit the laser beam through the optical arrangement to the focus region. The optical arrangement comprises an emission window. The detector is arranged to determine an interference signal. The laser sensor module comprises a soiling detection unit configured to vary a wavelength of the laser beam with a variation amplitude over a predetermined time period to provide a soiling detection signal indicative of a soiling of the emission window based on an interference signal during the wavelength variation of the laser beam.