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:
Jul. 28, 2020
Filed:
Aug. 07, 2019
Kasumi Nakamura, Kanagawa, JP;
Yohei Takano, Kanagawa, JP;
Hirotoshi Nakayama, Kanagawa, JP;
Naoki Nakamura, Saitama, JP;
Kasumi Nakamura, Kanagawa, JP;
Yohei Takano, Kanagawa, JP;
Hirotoshi Nakayama, Kanagawa, JP;
Naoki Nakamura, Saitama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A light source device includes: a light source to emit first color light; a fluorescent member having a first region that includes a fluorescent body to convert at least a part of the first color light into second color light different from the first color light when irradiated with the first color light and a second region to transmit the first color light; a wave plate; a reflecting member to reflect the first color light transmitted through the wave plate; and an optical path separating element provided on an optical path between the light source and the fluorescent member and transmit one of the first color light emitted from the light source and reflected light of the first color light by the reflecting member, and reflect another one.