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. 26, 2026
Filed:
Aug. 22, 2022
Ams International Ag, Jona, CH;
Laurent Nevou, Wadenswil, CH;
Jean Francois Seurin, West Windsor, NJ (US);
Svenja Mauthe, Altendorf, CH;
Jens Geiger, Thalwil, CH;
AMS INTERNATIONAL AG, Jona, CH;
Abstract
A self-mixing interferometric, SMI, laser sensor comprises a vertical cavity surface emitting laser, VCSEL, configured to emit laser radiation, the VCSEL comprising a first distributed Bragg reflector, DBR, a second DBR and a cavity region including an active light generation region, wherein the cavity region is arranged in a layer structure between a front side of the first DBR and a back side of the second DBR. Therein at least one of the first and second DBR comprises a first contrast region and a second contrast region, the first contrast region having a first refractive index contrast Δnregarding an emission wavelength of the VCSEL and the second contrast region having a second refractive index contrast Δn/n larger than the first refractive index contrast Δn/n.