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.

公开(公告)号：US10567653B2

公开(公告)日：2020-02-18

申请号：US15933270

申请日：2018-03-22

Applicant: HANWHA TECHWIN CO., LTD.

Inventor： Dae Bong Kim ,  Cheol Ho Kim ,  Young Mi Kim ,  Sang Hyun Cho ,  Jong In Park

IPC: H04N7/18 ,  H04N5/232

Abstract: A method of rotating a surveillance camera having an acceleration sensor and being controllable by a processor to maintain a tilt-angle to conform to a command tilt-angle, includes the steps of moving the surveillance camera tilt to a predetermined command tilt-angle in response to a signal from the processor; periodically calculating estimated tilt-angles by using acceleration values in at least one axis of an acceleration sensor; calculating a difference value between an estimated tilt-angle of a current period and an estimated tilt-angle of a previous period; and when the difference value between the estimated tilt-angles exceeds a set limit, moving the camera to another position to correct the tilt angle according to the difference calculate.

公开(公告)号：US20190182425A1

公开(公告)日：2019-06-13

申请号：US15933270

申请日：2018-03-22

Applicant: HANWHA TECHWIN CO., LTD.

Inventor： Dae Bong KIM ,  Cheol Ho Kim ,  Young Mi Kim ,  Sang Hyun Cho ,  Jong In Park

IPC: H04N5/232

CPC classification number: H04N5/23258 ,  G08B13/1963 ,  G08B29/24 ,  H04N5/23267 ,  H04N5/23287

Abstract: A method of rotating a surveillance camera having an acceleration sensor and being controllable by a processor to maintain a tilt-angle to conform to a command tilt-angle, includes the steps of moving the surveillance camera tilt to a predetermined command tilt-angle in response to a signal from the processor; periodically calculating estimated tilt-angles by using acceleration values in at least one axis of an acceleration sensor; calculating a difference value between an estimated tilt-angle of a current period and an estimated tilt-angle of a previous period; and when the difference value between the estimated tilt-angles exceeds a set limit, moving the camera to another position to correct the tilt angle according to the difference calculate.