US 12,392,983 B1
Auto focus in consumer devices
Wenting Li, Shenzhen (CN); Bambie Maybuena Olorvida, Cabuyao Laguna (PH); and Thanh Minh Ngo, San Jose, CA (US)
Assigned to Amazon Technologies, Inc., Seattle, WA (US)
Filed by Amazon Technologies, Inc., Seattle, WA (US)
Filed on Sep. 21, 2021, as Appl. No. 17/481,164.
Claims priority of provisional application 63/224,004, filed on Jul. 21, 2021.
Int. Cl. G02B 7/02 (2021.01); G02B 7/38 (2021.01); H04N 23/67 (2023.01)
CPC G02B 7/023 (2013.01) [G02B 7/38 (2013.01); H04N 23/67 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method implemented on a device, the method comprising:
receiving, by a processor of the device upon execution by the processor of instructions stored in a memory of the device, a curve that is fit to through focus data for a lens of the device, the curve predetermined prior to a capture of an image;
capturing the image with the lens, wherein the lens is at a first lens position;
determining, by the processor upon the execution of the instructions, a measurement by using the image;
determining, by the processor upon the execution of the instructions and by at least comparing the measurement with the curve, the first lens position;
determining, by the processor upon the execution of the instructions, a distance based on the first lens position and the curve; and
causing, by the processor upon the execution of the instructions, the lens to be placed in a second lens position that corresponds to repositioning the lens from the first lens position according to the distance.