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. 15, 2011
Filed:
May. 15, 2008
Hung-jen Wei, Nan-Tou Hsien, TW;
Chih-chang Chou, Taipei Hsien, TW;
Ming-kuen Lin, Yun-Lin Hsien, TW;
Hung-Jen Wei, Nan-Tou Hsien, TW;
Chih-Chang Chou, Taipei Hsien, TW;
Ming-Kuen Lin, Yun-Lin Hsien, TW;
BenQ Corporation, Taipei, TW;
Abstract
An image projection system includes a light source for generating a light beam, a reflective housing, and an invisible-light reflector. The reflective housing includes an opening and forms an accommodating space for accommodating the light source so that the light beam can emit from the opening along an optical path. The invisible-light reflector, whose normal is arranged to form an acute angle with the optical path, is installed at a reflecting position intersecting with the optical path outside the opening of the reflective housing. The invisible light of the light beam will be reflected back to the accommodating space by the invisible-light reflector without any destruction caused by the invisible light.