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:
Mar. 22, 2011
Filed:
Mar. 26, 2008
Chia-chang Lee, Hsinchu, TW;
Wan-chiang Wang, Hsinchu, TW;
Chia-Chang Lee, Hsinchu, TW;
Wan-Chiang Wang, Hsinchu, TW;
Young Optics Inc., Hsinchu, TW;
Abstract
A beam combiner for combining a first color beam, a second color beam, and a third color beam is provided. The beam combiner has a transparent substrate with a first optical surface on which a first reflective film reflecting the first color beam is disposed, and a second optical surface on which a second reflective film reflecting the second color beam is disposed. The first optical surface and the second optical surface are parallel. The second color beam entering the transparent substrate is reflected by the second reflective film and leaves the transparent substrate by passing through the first optical surface, while the third color beam enters the transparent substrate from the second optical surface and leaves the transparent substrate by passing through the first optical surface. The optical paths of the first, the second, and the third color beam are substantially coincident after emerging from the first optical surface.