The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2015
Filed:
Apr. 12, 2012
Hui-hsuan Chen, HsinChu, TW;
Hsin-chia Chen, HsinChu, TW;
Han-chi Liu, HsinChu, TW;
Ching-lin Chung, HsinChu, TW;
Yen-min Chang, HsinChu, TW;
Hui-Hsuan Chen, HsinChu, TW;
Hsin-Chia Chen, HsinChu, TW;
Han-Chi Liu, HsinChu, TW;
Ching-Lin Chung, HsinChu, TW;
Yen-Min Chang, HsinChu, TW;
Pixart Imaging Incorporation, R.O.C., Hsinchu, TW;
Abstract
The present invention discloses an optical displacement detection apparatus and an optical displacement detection method. The optical displacement detection apparatus comprises: at least two light sources for projecting light of different spectrums to a surface under detection, respectively; an image capturing device for receiving light reflected from the surface under detection and converting it into electronic signals; and a processing control circuit for calculating displacement according to the electronic signals from the image capturing device, wherein the processing control circuit is capable of switching between the light sources.