US 12,256,155 B2
System and method for reducing stray light interference in optical systems
Samuel Richard Wilton, Levittown, PA (US)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Filed by LG INNOTEK CO., LTD., Seoul (KR)
Filed on Mar. 1, 2023, as Appl. No. 18/176,561.
Claims priority of provisional application 63/402,130, filed on Aug. 30, 2022.
Prior Publication US 2024/0073545 A1, Feb. 29, 2024
Int. Cl. H04N 23/81 (2023.01); G01S 7/48 (2006.01); G01S 7/52 (2006.01); G01S 17/88 (2006.01); G01S 17/89 (2020.01); H04N 23/71 (2023.01); H04N 25/671 (2023.01)
CPC H04N 23/81 (2023.01) [H04N 23/71 (2023.01); H04N 25/671 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method for reducing optical interference in an optical sensor comprising:
detecting, by an optical sensor device comprising a plurality of pixel sensors, a signal with a reflected light component and a stray light component;
estimating, by a processor, a stray light intensity in each pixel of the plurality of pixel sensors using a measured mapping of an intensity of stray light relative to an intensity of reflected light, wherein the measured mapping is derived from the measured intensities associated with all pixel sensors of the optical sensor device;
adjusting, by the processor, a noise probability for the signal using the estimated stray light intensity and an unbiased noise intensity; and
adjusting, by the processor, a signal confidence score using the adjusted noise probability.