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:
Dec. 07, 2021
Filed:
Jul. 30, 2019
Robert Bosch Gmbh, Stuttgart, DE;
Koninklijke Philips N.v., Eindhoven, NL;
Robert Wolf, Dresden, DE;
Soren Sofke, Tubingen, DE;
Philipp Gerlach, Ulm, DE;
Susanne Weidenfeld, Weilheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
TRUMPF PHOTONIC COMPONENTS, GMBH, Ulm, DE;
Abstract
The present invention provides a method for estimating a condition parameter of a laser diode having an associated photodiode, to an apparatus for monitoring the operation of such a laser diode, and to a particle sensor apparatus. The photodiode (PD) is operable together with the laser diode (LD), wherein it detects the light (LS) of the laser diode (LD) and converts it into an electrical current, and is thermally coupled to the laser diode (LD). The at least one condition parameter is estimated during the operation of the laser diode (LD) and the estimation is based on current measurements and/or voltage measurements at the laser diode (LD) and/or at the photodiode (PD).