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:
Jun. 14, 2016
Filed:
Dec. 23, 2014
Qisda Optronics (Suzhou) Co., Ltd., Suzhou, Jiangsu Province, CN;
Qisda Corporation, Taoyuan County, TW;
Chi-Hung Hsiao, Taoyuan County, TW;
Ying-Fang Lin, Taoyuan County, TW;
QISDA OPTRONICS (SUZHOU) CO., LTD., New District, Suzhou, Jiangsu Province, CN;
QISDA CORPORATION, Shan-Ting Tsun, Gueishan Hsiang, Taoyuan County, TW;
Abstract
A touch projection system includes a screen, an image-capturing device, a micromirror device, and a TIR prism disposed in front of the micromirror device. The TIR prism includes an optical path compensation structure or a hollowed channel, so that an image light from the screen, traveling through the TIR prism to be reflected by the micromirror device, can travel through the optical path compensation structure or the hollowed channel to avoid a probable optical path difference on the image light due to traveling through the TIR prism. Thereby, the invention can solve that a distortion may be induced in a touch image formed by the image-capturing device receiving the image light reflected by the micromirror device.