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:
Mar. 14, 2017
Filed:
Sep. 12, 2013
Kazuhiro Fujita, Tokyo, JP;
Tatsuya Takahashi, Tokyo, JP;
Toshiharu Murai, Kanagawa, JP;
Ikuo Maeda, Kanagawa, JP;
Takehiro Nishimori, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Tatsuya Takahashi, Tokyo, JP;
Toshiharu Murai, Kanagawa, JP;
Ikuo Maeda, Kanagawa, JP;
Takehiro Nishimori, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An illumination device includes an excitation light source which emits excitation light, a wavelength converter which generates fluorescent light having a wavelength different from that of the excitation light through the excitation of the excitation light and a light path-splitting member including a first filter and a second filter arranged to alternately come across a light path of the excitation light, wherein the first filter reflects one of the excitation light and the fluorescent light and transmits the other of the excitation light and the fluorescent light, the second filter transmits light reflected by the first filter and reflects light transmitted through the first filter, and the wavelength converter is disposed in a reflection light path or a transmission light path of the excitation light.