公开(公告)号：US11228719B2

公开(公告)日：2022-01-18

申请号：US15992947

申请日：2018-05-30

Applicant: Hanwha Techwin Co., Ltd.

Inventor： Won Mo Koo ,  Hee Joong Han ,  Won Sin Lee ,  Jong In Park

IPC: H04N5/235 ,  H04N5/232 ,  H04N5/225

Abstract: A method of controlling zoom of a lighting unit based on brightness of an image may include determining at least one of an angle of view of an optical unit and an optical zoom magnification of the optical unit configured to obtain an image by using an image sensor, determining a zoom adjustment range of a lighting unit based on at least one of the angle of view and the optical zoom magnification, and adjusting zoom of the lighting unit such that brightness of the image meets a preset condition within the zoom adjustment range, wherein a diffusion range of light from the lighting unit is adjusted through the zoom adjustment of the lighting unit.

公开(公告)号：US11307381B2

公开(公告)日：2022-04-19

申请号：US16496238

申请日：2017-06-28

Applicant: HANWHA TECHWIN CO., LTD.

Inventor： Dae Bong Kim ,  Young Sang Kwon ,  Jae Goo Lee ,  Young Mi Kim ,  Hee Joong Han

IPC: G02B7/10

Abstract: Provided is an optical device including an optics including at least two moving groups that are movable along an optical axis and share portions of driving regions; a plurality of actuators configured to move the at least two moving groups along the optical axis, respectively; and a control unit configured to control the positions of the at least two moving groups by operating the actuators, wherein the control unit moves the at least two moving groups independently, such that the position coordinates of the at least two moving groups in one integrated coordinates system do not coincide with each other.