US 12,250,438 B2
Swir see-spot, laser target acquisition, tracking, and PRF decoding nightvision system
Nathanael D. Hunt, Wilsonville, AL (US); James A. LeBeau, Tempe, AZ (US); Jon D. Burnsed, Tempe, AZ (US); and Joseph C. Ottney, Newmarket, NH (US)
Assigned to L3HARRIS TECHNOLOGIES, INC., Melbourne, FL (US)
Filed by L3Harris Technologies, Inc., Melbourne, FL (US)
Filed on Feb. 7, 2023, as Appl. No. 18/165,634.
Prior Publication US 2024/0267603 A1, Aug. 8, 2024
Int. Cl. G02B 23/12 (2006.01); G02B 27/01 (2006.01); H01L 27/32 (2006.01); H04N 23/20 (2023.01)
CPC H04N 23/20 (2023.01) [G02B 23/12 (2013.01); G02B 27/0101 (2013.01); G02B 2027/0118 (2013.01); G02B 2027/014 (2013.01)] 20 Claims
OG exemplary drawing
 
8. A method of extracting data in pulsed light in a nightvision system, the method comprising:
receiving input light at an image intensifier tube;
at a power supply coupled to the image intensifier tube, varying current to the image intensifier tube to implement automatic brightness control of the intensifier tube based on intensity of the input light received at the image intensifier tube;
at a signal processor coupled to the power supply, detecting changes in voltage or current supplied by the power supply occurring as a result of changes in the intensity of the input light to the image intensifier tube; and
based on the changes in voltage or current supplied by the power supply, extracting data encoded in the input light, by varying the intensity of the input light, to the image intensifier tube.