US 12,177,577 B2
Adaptive relative illumination optical system
Jocelyn Parent, Lavaltrie (CA); Patrice Roulet, Montreal (CA); Simon Thibault, Quebec City (CA); Pierre Konen, Saint-Bruno (CA); Zhenfeng Zhuang, Montreal (CA); Julie Buquet, Montreal (CA); Valentin Bataille, Montreal (CA); Manuel Magini, Montreal (CA); and Zhiqiang Miao, Brossard (CA)
Assigned to IMMERVISION, INC., Montreal (CA)
Filed by ImmerVision, Inc., Montreal (CA)
Filed on Apr. 14, 2022, as Appl. No. 17/720,498.
Claims priority of provisional application 63/174,790, filed on Apr. 14, 2021.
Prior Publication US 2022/0337737 A1, Oct. 20, 2022
Int. Cl. H04N 5/335 (2011.01); G02F 1/15 (2019.01); H04N 23/55 (2023.01); H04N 23/741 (2023.01)
CPC H04N 23/741 (2023.01) [G02F 1/15 (2013.01); H04N 23/55 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method for controlling an optical system comprising at least one active light-controlling element having one or more sub-elements, the method comprising:
a. creating, with the optical system, a first optical image in an image plane;
b. converting, with an image sensor located near the image plane, the first optical image to a first digital image with at least one sub-area requiring a light level adjustment;
c. analyzing, with a processor, the first digital image to determine a required light transmission level setting of at least one of the one or more sub-elements of the at least one active light-controlling element to adjust the light level of the at least one sub-area to a desired light level;
d. adjusting, with a controller, the light transmission level setting of the at least one of the one or more sub-elements of the at least one active light-controlling element;
e. creating, with the optical system and the at least one of the one or more sub-elements of the at least one active light-controlling element at the adjusted light transmission level setting, a second optical image in the image plane; and
f. converting, with the image sensor, the second optical image to a second digital image.