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:
Jan. 06, 2026
Filed:
Sep. 06, 2023
Seiko Epson Corporation, Tokyo, JP;
Koichi Akiyama, Azumino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
An illuminator includes a first light source that emits first light, a second light source that emits second light, a light combining member that combines the first light and the second light, a light diffuser that diffuses combined light, a light collector that is disposed between the light combining member and the light diffuser and directs the combined light toward the light diffuser, and a collimator that parallelizes the combined light emitted from the light diffuser. The light diffuser includes a diffusion plate having a diffusion surface that diffusively reflects the combined light, and a driver that rotates the diffusion plate. The diffusion surface inclines with respect to the optical axis of the light collector. An incidence position where the chief ray of the combined light is incident on the light collector is shifted with respect to the optical axis toward the side where the collimator is disposed.