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:
Sep. 23, 2003
Filed:
Sep. 29, 2000
Applicant:
Inventors:
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 2/126 ; G03B 2/114 ; H04N 9/12 ; G02F 1/00 ; F21V 9/00 ;
U.S. Cl.
CPC ...
G03B 2/126 ; G03B 2/114 ; H04N 9/12 ; G02F 1/00 ; F21V 9/00 ;
Abstract
A light source optical system capable of forming an image having good balance in brightness of red, blue, and green color light, having high overall brightness, and having good color reproducibility, on a screen is provided. The light source optical system has a first lamp, a second lamp, and a condensing optical system for synthesizing a first light emitted from the first lamp and a second light emitted from the second lamp to form irradiation light. The light source optical system is characterized in that the first light and the second light have mutually differing spectral distributions.