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:
Oct. 30, 2007
Filed:
Apr. 21, 2005
Nai-yueh Liang, Taipei, TW;
Shu-ching Chan, Pingtung, TW;
Wei-chung Wang, Taipei County, TW;
Chong-han Tsai, Taipei County, TW;
Ta-kun Kung, Taipei County, TW;
Yen-chun Chou, Taipei County, TW;
Nai-Yueh Liang, Taipei, TW;
Shu-Ching Chan, Pingtung, TW;
Wei-Chung Wang, Taipei County, TW;
Chong-Han Tsai, Taipei County, TW;
Ta-Kun Kung, Taipei County, TW;
Yen-Chun Chou, Taipei County, TW;
Prodisc Technology Inc., Taipei Hsien, TW;
Abstract
A light tunnel with a gradient filter layer includes a light tunnel body and a gradient filter layer. In this case, the gradient filter layer is disposed at a light emerging side. The transmission rate at the central area of the gradient filter layer is smaller than the transmission rate at the edge area of the gradient filter layer.