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:
Jul. 06, 2004
Filed:
Jul. 30, 2002
Applicant:
Inventor:
Sang Ok Yeo, Kyonggi-do, KR;
Assignee:
LG Electronics, Inc., Seoul, KR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 9/00 ;
U.S. Cl.
CPC ...
G02B 9/00 ;
Abstract
A projection display system is disclosed, which enables aberration correction and can reduce the size of the system. The projection display system includes a liquid crystal panel displaying an image, a first lens group having a positive refractive power, formed by combination of two or more lenses, and correcting aberration of incident light from the liquid crystal panel, a total reflection mirror reflecting the incident light from the first lens group in a predetermined direction, and a second lens group having a negative refractive power, formed by combination of two or more lenses, and correcting aberration of the incident light from the total reflection mirror.