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.:

US 7369318 B1

PDF
Full Text
Expired
Date of Patent:
May. 06, 2008

Filed:

Jun. 21, 2005
Applicant:

Haeng Seok Yang, Gyeonggi-do, KR;

Inventor:

Haeng Seok Yang, Gyeonggi-do, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/12 (2006.01); G02F 1/00 (2006.01); H04N 5/74 (2006.01); G03B 21/28 (2006.01);
U.S. Cl.
CPC ...
Abstract

A display device is disclosed herein. The display device includes a condenser unit, an illumination lens system, an optical modulation system, a filter system and a projection system. The condenser unit converges polarized light output from a plurality of light sources, and outputs the converged polarized light. The illumination lens system converts the polarized light into linear parallel light. The optical modulation system produces diffracted light beams having a plurality of diffraction orders by optically modulating the polarized light. The filter system passes some of the diffracted light beams having desired orders therethrough. The projection system focuses the diffracted light beams passed through the filter system, and projects the focused diffracted light beams onto a screen.


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