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:
May. 09, 2023
Filed:
Jul. 29, 2019
Robert Bosch Gmbh, Stuttgart, DE;
Trumpf Photonic Components Gmbh, Ulm, DE;
Robert Wolf, Dresden, DE;
Soren Sofke, Tubingen, DE;
Philipp Gerlach, Ulm, DE;
Susanne Weidenfeld, Weilheim, DE;
Rico Srowik, Radebeul, DE;
Trumpf Photonic Components GmbH, Ulm, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The present invention provides methods and an apparatus for monitoring the optical output power of a laser diode (LD) having an associated photodiode (PD), and 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). Monitoring of the optical output power P is effected during the operation of the laser diode (LD) and is based on current measurements and/or voltage measurements at the laser diode (LD) and at the photodiode (PD).