-
公开(公告)号:US20190170542A1
公开(公告)日:2019-06-06
申请号:US15939523
申请日:2018-03-29
Applicant: PixArt Imaging Inc.
Inventor: CHUNG-TING YANG , KAI-HO TSAI , SHIH-KUAN LIU
Abstract: The present disclosure is related a technology of confirming a position using an optical sensor to detect reflected light coming through a through hole formed at a predetermined position on a rotation device. In the present disclosure, the optical sensor and a light source are formed at the same side of a rotatable element so as to reduce the occupied space and simplify the manufacturing process.