US 12,235,154 B2
Maintaining consistent photodetector sensitivity in an optical measurement system
Alex Borisevich, Lancaster, CA (US)
Assigned to HI LLC, Culver City, CA (US)
Filed by HI LLC, Los Angeles, CA (US)
Filed on Apr. 20, 2022, as Appl. No. 17/724,628.
Claims priority of provisional application 63/255,483, filed on Oct. 14, 2021.
Claims priority of provisional application 63/210,974, filed on Jun. 15, 2021.
Prior Publication US 2022/0397453 A1, Dec. 15, 2022
Int. Cl. G01J 1/08 (2006.01); G01J 1/02 (2006.01); G06F 1/16 (2006.01); H01L 31/107 (2006.01)
CPC G01J 1/08 (2013.01) [G06F 1/163 (2013.01); H01L 31/107 (2013.01); G01J 2001/0257 (2013.01)] 35 Claims
OG exemplary drawing
 
1. An optical measurement system comprising:
a light source configured to emit a light pulse directed at a target; and
a control circuit configured to drive the light source with a current pulse comprising:
a non-linear rise, and
a decline from a maximum output to zero having a duration within a threshold percentage of a total pulse duration of the current pulse, wherein the threshold percentage is twenty percent.