公开(公告)号：US10061404B2

公开(公告)日：2018-08-28

申请号：US15087507

申请日：2016-03-31

Applicant: PIXART IMAGING INC.

Inventor： Ching-Lin Chung ,  J R-Shen Yang ,  Chia-Fu Ke ,  Yen-Min Chang

IPC: G06F3/03 ,  G06F3/0354 ,  G06F1/16

CPC classification number: G06F3/03543 ,  G06F1/1652 ,  G06F3/0317

Abstract: The present disclosure illustrates an optical navigation chip. The optical navigation chip is disposed on an optical navigation module. The optical navigation module includes a light-emitting unit. The light-emitting unit provides a light beam to irradiate a surface of a displacement generating unit. The light beam has a low divergence angle to reduce scattering. The optical navigation chip includes a sensing array and a displacement calculating unit. The sensing array is disposed corresponding to the surface. The sensing array receives a reflected light beam which the surface reflects, and captures an image once every capturing interval based upon the reflected light beam. The displacement calculating unit calculates a relative displacement between the optical navigation chip and the surface according to the images.