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:
May. 19, 2026
Filed:
Feb. 26, 2024
Seiko Epson Corporation, Tokyo, JP;
Junichi Wakabayashi, Matsumoto, JP;
Eiji Morikuni, Matsumoto, JP;
Kana Hatano, Matsumoto, JP;
Hidefumi Sakata, Azumino, JP;
Takuo Yoneyama, Azumino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A projector includes a light source, a separation optical system including a first dichroic mirror for separating multicolored light into a first colored light beam as a blue light beam and another colored light beam, a first light modulation element for modulating the first colored light beam, a second light modulation element for modulating the other colored light beam, a reduction optical system for reducing a luminous flux width of the first colored light beam modulated by the first light modulation element, a color combining prism, and a projection optical system. The effective area of the first light modulation element is larger than the effective area of the second light modulation element. The separation optical system includes an extension optical system for extending a light path.