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:
Apr. 15, 2003
Filed:
Mar. 02, 2001
Hark Lim Choi, Kyungki-Do, KR;
Dong Ha Kim, Kyungki-Do, KR;
Samsung Electro-Mechanics Co., Ltd., Kyungki-Do, KR;
Abstract
A color corner of a projection system includes a dichroic filter having a flat plate type structure, thereby achieving an improvement in color separation characteristics while allowing easy manufacture of the dichroic filter. The projection system includes an illumination unit for separating an S-polarized light from a non-polarized white light, a polarized beam splitter for transmitting a selected one of the R, G, and B components of the light received from the illumination unit while reflecting the remaining two components of the incident light, and a flat plate type dichroic filter for defining different transmission and reflection optical paths for the separated two light components, respectively, thereby separating the two light components reflected by the polarized beam splitter.