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.

Date of Patent:
Jul. 22, 2008

Filed:

Jun. 14, 2005
Applicants:

Sung-tae Kim, Seoul, KR;

Jeong-ho Nho, Suwon-si, KR;

Inventors:

Sung-tae Kim, Seoul, KR;

Jeong-ho Nho, Suwon-si, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/28 (2006.01);
U.S. Cl.
CPC ...
Abstract

A projection system is provided. The projection system includes a light source, a color filter separating light emitted from the light source into colored light, a light-path converter converting a path of the colored light that has passed through the color filter, a lens having a positive refractive power in order to condense the light from the light-path converter, a display device processing the light that has passed through the lens in response to an input signal and forming a color image, and a projection lens unit enlarging and projecting the color image onto a screen.


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