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. 18, 2014
Filed:
Nov. 04, 2008
Applicants:
Chan Young Yoon, Gyeonggi-do, KR;
Sang OK Yeo, Gyeonggi-do, KR;
Inventors:
Chan Young Yoon, Gyeonggi-do, KR;
Sang Ok Yeo, Gyeonggi-do, KR;
Assignee:
LG Electronics Inc., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A projection display device is discussed, which can include a condensing lens having a refractive index higher than that of a collimating lens, thereby being capable of miniaturizing not only the collimating lens, but also lenses arranged downstream from the condensing lens.