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:
Aug. 09, 2005
Filed:
Apr. 18, 2003
Applicant:
Ho Joong Kang, Enijungbu-si, KR;
Inventor:
Ho Joong Kang, Enijungbu-si, KR;
Assignee:
LG Electronics Inc., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B005/30 ; G02B027/28 ; G02B006/00 ; F21V009/14 ; F21V008/00 ;
U.S. Cl.
CPC ...
Abstract
An integrator and a display apparatus using the same simplify the structure of an optical system and minimize optical loss. The integrator homogenizes, polarizes and recaptures incident lights. The optical loss can be reduced by using a color drum and a color wheel engaged with the integrator. In order to minimize the optical loss, a polarization conversion device where a color bar filter or color switch is directly adhered to an integrator is used. The polarization conversion device can be applied to a projector for embodying small images into large ones.