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. 12, 2026
Filed:
Feb. 26, 2024
Seiko Epson Corporation, Tokyo, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A projector includes a relay system reducing a luminous flux width of a first color light modulated by a first light modulation element, a light combining prism outputting a combined light formed by combining the first color light having the luminous flux width reduced by the relay system and another color light modulated by a second light modulation element, a projection system projecting the combined light as a projection image, a detection unit detecting an F-number of the projection system, and a control unit correcting a white balance of the projection image by controlling an amount of a light output from at least one of the first light modulation element and the second light modulation element based on the F-number detected by the detection unit. A pixel pitch of the first light modulation element is larger than a pixel pitch of the second light modulation element.