US 12,379,205 B2
Optical depth sensing systems using high speed colloidal quantum dot photodetectors
Ethan J. D. Klem, Chapel Hill, NC (US); Christopher William Gregory, Chapel Hill, NC (US); Jeffery Allan Hilton, Jr., Durham, NC (US); Carmen Procida, Durham, NC (US); Michael Bond, Morrisville, NC (US); and Tewodros Tessema, Durham, NC (US)
Assigned to SWIR Vision Systems Inc., Scottsdale, AZ (US)
Filed by SWIR Vision Systems Inc., Durham, NC (US)
Filed on Nov. 30, 2022, as Appl. No. 18/060,171.
Claims priority of provisional application 63/284,846, filed on Dec. 1, 2021.
Prior Publication US 2023/0168078 A1, Jun. 1, 2023
Int. Cl. G01B 11/22 (2006.01); H10K 39/30 (2023.01); B82Y 20/00 (2011.01)
CPC G01B 11/22 (2013.01) [H10K 39/30 (2023.02); B82Y 20/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical depth sensing system, comprising:
an active illumination source; and
a colloidal quantum dot photodetector configured to receive light from the active illumination source, the colloidal quantum dot photodetector having colloidal quantum dots as a light sensing elements;
wherein a signal output from the colloidal quantum dot photodetector has rise times that are less than 5.0 ns and fall times less than 10.0 ns.