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:
Sep. 11, 2018
Filed:
Aug. 10, 2016
Takehiro Nishimori, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Toshiharu Murai, Kanagawa, JP;
Tatsuya Takahashi, Tokyo, JP;
Junichi Kitabayashi, Kanagawa, JP;
Kaoru Itoh, Kanagawa, JP;
Makoto Hirakawa, Kanagawa, JP;
Takehiro Nishimori, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Toshiharu Murai, Kanagawa, JP;
Tatsuya Takahashi, Tokyo, JP;
Junichi Kitabayashi, Kanagawa, JP;
Kaoru Itoh, Kanagawa, JP;
Makoto Hirakawa, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A light irradiation device for emitting light of two or more components by laser light, which a laser light source emits, to an outside, includes a diffusion optical path change member configured to convert a first color component of the laser light into diffusion light and change an optical path of the first color component; a phosphor configured to generate fluorescence of a second color component different from the first color component based on the laser light, and change an optical path of the second color component; and an optical path switch member configured to switch between a first optical path for emitting the first color component to the outside and a second optical path for emitting the second color component to the outside. Light going straight at a light diffusion position of the diffusion optical path change member is not emitted to the outside.