US 12,474,454 B2
Sensor with cross talk suppression
James Peter Drummond Downing, Doune (GB); Adam Caley, Fife (GB); and Christoph Kuch, Edinburgh (GB)
Assigned to STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITED, Marlow (GB)
Filed by STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITED, Marlow (GB)
Filed on Nov. 17, 2020, as Appl. No. 16/950,841.
Claims priority of provisional application 62/941,955, filed on Nov. 29, 2019.
Prior Publication US 2021/0165085 A1, Jun. 3, 2021
Int. Cl. G01S 7/497 (2006.01); G01S 7/499 (2006.01); G01S 17/08 (2006.01); H01S 5/183 (2006.01)
CPC G01S 7/497 (2013.01) [G01S 7/499 (2013.01); G01S 17/08 (2013.01); H01S 5/18386 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device, comprising:
a substrate;
a light source on the substrate, the light source configured to emit a light signal;
a first optical structure aligned with the light source, the first optical structure configured to polarize the light signal from S-polarized light to P-polarized light; and
a detector on the substrate, the detector configured to receive the light signal reflected from an object, the P-polarized light having components extending in a direction parallel to a plane including the light source and the detector, the S-polarized light having components extending in a direction transverse to the plane, wherein the first optical structure includes another substrate, a functional layer that has an optical function, and a polarizing layer that is configured to polarize the light signal, wherein the functional layer and the polarizing layer are on opposite sides of the another substrate.