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:
Nov. 26, 2024
Filed:
Feb. 03, 2021
Applicant:
Ams Sensors Asia Pte. Ltd., Singapore, SG;
Inventors:
Jean-Francois Seurin, Princeton Junction, NJ (US);
Goran Stojanovic, Ruschlikon, CH;
Laurent Nevou, Ruschlikon, CH;
Assignee:
AMS SENSORS ASIA PTE. LTD., Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 11/02 (2006.01); G01D 5/26 (2006.01); G01H 9/00 (2006.01); H04R 29/00 (2006.01); H01S 5/183 (2006.01);
U.S. Cl.
CPC ...
G01B 11/026 (2013.01); G01D 5/266 (2013.01); G01H 9/00 (2013.01); H04R 29/001 (2013.01); H01S 5/183 (2013.01);
Abstract
Sensing Method and Sensor System A sensing method comprises using a vertical cavity surface emitting laser (VCSEL) to oscillate and emit a laser beam. A diaphragm is used to reflect a portion of the laser beam back into the VCSEL. This method can be referred as self mixing interferometry. A current or voltage at the VCSEL is monitored, and is used to sense movement of the diaphragm. This allows a property external to the VCSEL to be sensed without using a photo-detector.