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:
Mar. 04, 2025
Filed:
Apr. 27, 2022
Trumpf Photonic Components Gmbh, Ulm, DE;
Robert Bosch Gmbh, Stuttgart, DE;
Hans Spruit, Waalre, NL;
Jochen Hellmig, Valkenswaard, NL;
Stephan Gronenborn, Aachen, DE;
Johannes Meyer, Stuttgart, DE;
Andreas Petersen, Stuttgart, DE;
Thomas Schlebusch, Stuttgart, DE;
TRUMPF PHOTONIC COMPONENTS GMBH, Ulm, DE;
ROBERT BOSCH GMBH, Stuttgart, DE;
Abstract
A laser sensor includes a laser source configured to emit a laser beam, and optics configured to project the laser beam as a one- or two-dimensional patterned laser beam onto an object to be examined, such that a distance of the patterned laser beam from the laser source varies along the patterned laser beam projected on the object. The laser sensor further includes a detector configured to determine a self-mixing interference signal generated by laser light of the patterned laser beam reflected from the object back into the laser source, and circuitry configured to analyze a spectrum of the self-mixing interference signal and extract from the spectrum of the self-mixing interference signal multiple frequencies that are indicative of at least one of the following: multiple distances along the patterned laser beam from the laser source, or multiple velocities along the patterned laser beam with respect to the laser source.