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. 22, 2016
Filed:
Sep. 18, 2013
Casio Computer Co., Ltd., Shibuya-ku, Tokyo, JP;
Hiroki Masuda, Akishima, JP;
CASIO COMPUTER CO., LTD., Tokyo, JP;
Abstract
There is provided a light source unit including an excitation light source emitting excitation light, and a luminescent member having a transmission portion transmitting excitation light from the excitation light source, a first luminescent material layer placed beside the transmission portion on one side of the luminescent member and a second luminescent material layer placed beside the transmission portion on the other side of the luminescent member, wherein the first luminescent material layer and/or the second luminescent material layer emits luminous light by being excited by the excitation light, and wherein a guiding optical system is provided which shines excitation light which has passed through the transmission portion from the excitation light source on to the first luminescent material layer and causes luminous light emitted from the first luminescent material layer to be incident on the transmission portion.