公开(公告)号：US20220263989A1

公开(公告)日：2022-08-18

申请号：US17730426

申请日：2022-04-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qingping WANG ,  Hongqi HU ,  Ruihua LI ,  Changcai LAI ,  Shisheng ZHENG ,  Yanlin SONG

IPC: H04N5/225 ,  G03B19/12 ,  G02F1/163 ,  G02B5/08

Abstract: An optical path switching method is applied to a surveillance module. The method includes: determining a target magnification; and (i) when the target magnification is less than or equal to a maximum magnification of a camera, setting a magnification of the camera to the target magnification, determining that a reflection element is at a first location or in a first working state, and performing image capture by using the camera alone; or (ii) when the target magnification is greater than a maximum magnification of the camera, setting a magnification of the camera to a first magnification, determining that the reflection element is at a second location or in a second working state, and performing image capture by using both the camera and a teleconverter, where a product of the first magnification and a magnification of the teleconverter is the target magnification. The method increases a surveillance distance while reducing costs.