US 12,278,462 B2
Apparatus for facial recognition
Carlos Fernando Rondina Mateus, Berkeley, CA (US); Christopher Chase, Berkeley, CA (US); Michael C. Y. Huang, Taipei (TW); Murat Serbay, Berlin (DE); Stefano Prandoni, Berlin (DE); and D. Philip Worland, Berkeley, CA (US)
Assigned to Brandwidth10, LTD., Berkeley, CA (US)
Filed by Bandwidth10, LTD., Berkeley, CA (US)
Filed on Jun. 9, 2023, as Appl. No. 18/207,838.
Application 18/207,838 is a continuation in part of application No. 18/111,902, filed on Feb. 21, 2023.
Application 18/207,838 is a continuation in part of application No. 18/107,140, filed on Feb. 8, 2023.
Claims priority of provisional application 63/432,050, filed on Dec. 12, 2022.
Claims priority of provisional application 63/415,268, filed on Oct. 11, 2022.
Claims priority of provisional application 63/402,553, filed on Aug. 31, 2022.
Claims priority of provisional application 63/402,560, filed on Aug. 31, 2022.
Claims priority of provisional application 63/402,556, filed on Aug. 31, 2022.
Claims priority of provisional application 63/402,546, filed on Aug. 31, 2022.
Prior Publication US 2025/0047071 A1, Feb. 6, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. H01S 5/14 (2006.01); G06V 40/16 (2022.01); H01S 5/00 (2006.01); H01S 5/12 (2021.01); H01S 5/183 (2006.01); H01S 5/30 (2006.01)
CPC H01S 5/141 (2013.01) [G06V 40/16 (2022.01); H01S 5/0085 (2013.01); H01S 5/1231 (2013.01); H01S 5/18311 (2013.01); H01S 5/18327 (2013.01); H01S 5/18394 (2013.01); H01S 5/3095 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system for facial recognition, comprising:
a camera unit;
one or more images configured to:
determine a pseudo-random sequence of image capture modes for a plurality of groups of image captures, wherein each group includes at least a capture using a first illumination mode and a capture using a second illumination mode that uses illumination of a tunable VCSEL laser, wherein the ordering of the first and second illumination modes for each group is pseudo-randomly determined;
receive image information for a set of image captures used for facial recognition, wherein the image information is indicated as being captured by the camera unit;
determine whether to authorize facial recognition in response to analyzing the image information and determining whether the image information was captured using the pseudo-random sequence of image capture modes; and
the tunable VCSEL laser including:
a first mirror;
one or more active regions with a first active region adjacent to the first mirror, each of an active region including quantum wells and barriers, each of an active region surrounded by one or more p-n junctions, the one or more active regions including a selected shape structure each with a tunnel junction (TJ);
one or more apertures provided with the selected shape structure;
one or more buried tunnel junctions (BTJ), additional TJ's, planar structures and/or additional BTJ's are created during a regrowth process that is independent of a first growth process of the first mirror, the active region and the one or more TJs;
one or more electrical confinement apertures defined by the one or more BTJ's, additional TJ's, planar structures and/or additional BTJ;
a vertical resonator cavity disposed over the electrical confinement apertures;
a high contrast grating (HCG) operating as a second mirror positioned over the vertical resonator cavity, the HCG configured to reflect a first portion of light back into the vertical resonator cavity, and a second portion of the light as an output beam from the tunable VCSEL laser, the HCG structure being layered on the selected shape structure;
wherein a shape of the output beam of the tunable VCSEL laser is determined by a geometric shape of the one or more BTJ apertures for additional TJ's, planar structures and/or additional BTJ's, with a transmission function of the HCG and is designed according to the desired optical transmission function of a facial recognition application.