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:
Dec. 27, 2022
Filed:
Oct. 25, 2021
Yohei Takano, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Makoto Hirakawa, Tokyo, JP;
Shigeaki Imai, Kanagawa, JP;
Yohei Takano, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Makoto Hirakawa, Tokyo, JP;
Shigeaki Imai, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A light source device includes: multiple light source units each including a light source to emit a first color light beam, each of the multiple light source units configured to: convert at least part of the first color light beam into a second color light beam emitted from an emitting region; and emit the second color light beam to form a conjugate image; and a light combiner to combine the conjugate images formed by the multiple light source units to form a combined image, in which the conjugate images partially overlap each other, on a plane of an entrance surface of a light uniformizing element along a central axis of the light uniformizing element. A conditional expression below is satisfied:1.3>>0.7