US 12,282,204 B2
Image capturing device for performing autofocus
Daebong Kim, Seongnam-si (KR); Seonggon Kim, Seongnam-si (KR); and Junho Gal, Seongnam-si (KR)
Assigned to HANWHA TECHWIN CO., LTD., Seongnam-si (KR)
Appl. No. 18/010,718
Filed by HANWHA TECHWIN CO., LTD., Seongnam-si (KR)
PCT Filed Apr. 5, 2021, PCT No. PCT/KR2021/004199
§ 371(c)(1), (2) Date Jun. 8, 2023,
PCT Pub. No. WO2022/004991, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 10-2020-0081438 (KR), filed on Jul. 2, 2020.
Prior Publication US 2023/0324651 A1, Oct. 12, 2023
Int. Cl. G02B 7/36 (2021.01); G03B 13/36 (2021.01); H04N 23/67 (2023.01)
CPC G02B 7/36 (2013.01) [G03B 13/36 (2013.01); H04N 23/675 (2023.01)] 20 Claims
OG exemplary drawing
 
1. An image capturing device comprising:
a lens;
a lens driver configured to change a focus position by moving the lens;
an image sensor configured to detect light passed through the lens; and
a focus controller configured to control, based on an image generated by the image sensor, the lens driver to adjust the focus position,
wherein the focus controller is further configured to:
detect a saturated object having an intensity greater than or equal to a threshold value, in each of a plurality of regions of the image;
from among regions in which the saturated objects are detected from among the plurality of regions, select regions having a same trend of a feature change of the saturated objects while the focus position is changed in a direction, as first regions, and adjust the focus position based on the feature change of the saturated objects detected in the first regions.