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:
Aug. 14, 2018
Filed:
Nov. 18, 2015
Wistron Corporation, New Taipei, TW;
Wistron Corporation, New Taipei, TW;
Abstract
An optical touch system including an optical touch apparatus and an optical touch stylus is provided. The optical touch apparatus includes a curved operation surface and a plurality of optical sensors. The curved operation surface has a vertex. The optical touch stylus performs a touch operation on the curved operation surface, and has a tip portion for generating a light signal. The optical sensors are arranged on a side of the curved operation surface based on a reference line. The optical sensors are configured to receive the light signal to sense the touch operation of the optical touch stylus performed on the curved operation surface. A surface sag exists between each of the optical sensors and the vertex. A difference between a tip length of the optical touch stylus and a distance of two selected surface sags is not smaller than a region parameter of the optical touch system.