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:
Apr. 21, 2026
Filed:
Mar. 16, 2023
Seiko Epson Corporation, Tokyo, JP;
Taku Nakamura, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A projection device includes a dichroic prism, a first self-luminous display device, a second self-luminous display device, a third self-luminous display device, and a projection optical system. The dichroic prism has a first surface, a second surface, a third surface, and a fourth surface, and is configured to emit combined image light from the fourth surface. The first self-luminous display device is configured to use light of a first wavelength to emit first image light to the first surface. The second self-luminous display device is configured to use light of a second wavelength to emit second image light to the second surface. The third self-luminous display device is configured to use light of a third wavelength to emit third image light to the third surface. The projection optical system is configured to project, onto a projection target, the combined image light emitted from the dichroic prism.