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:
Dec. 15, 2015
Filed:
Aug. 16, 2012
Hung-chih Chou, Hsinchu, TW;
Yung-hsing Chen, Hsinchu, TW;
Chien-jung Huang, Hsinchu, TW;
Chih-hsien Tsai, Hsinchu, TW;
Wei-szu Lin, Hsinchu, TW;
Hung-Chih Chou, Hsinchu, TW;
Yung-Hsing Chen, Hsinchu, TW;
Chien-Jung Huang, Hsinchu, TW;
Chih-Hsien Tsai, Hsinchu, TW;
Wei-Szu Lin, Hsinchu, TW;
Young Optics Inc., Hsinchu, TW;
Abstract
A touch device including a light guide unit, a light emitting unit, an invisible light filter and an invisible light detector is provided. The light guide unit has at least one light incident surface and a first surface connected to the light incident surface. The light emitting unit is disposed beside the light incident surface and is capable of emitting an invisible light beam. The invisible light filter is contacted tightly with the first surface. The light guide unit is disposed between the invisible light filter and the invisible light detector. Moreover, a touch projection system including the touch device is also provided.