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:
Oct. 27, 2020
Filed:
Sep. 05, 2019
Casio Computer Co., Ltd., Tokyo, JP;
Masakuni Iwanaga, Akishima, JP;
CASIO COMPUTER CO., LTD., Tokyo, JP;
Abstract
A light source unit includes a blue light source configured to output light in a blue wavelength range, an excitation light source configured to emit excitation light having a shorter wavelength than a wavelength of the light in the blue wavelength range outputted from the blue light source, and a luminescent wheel including a luminescent light emitting area on to which the excitation light is shined to thereby emit luminescent light and a light guiding area configured to transmit or reflect the light in the blue wavelength range, and the excitation light is shined on to the luminescent light emitting area from a first surface side of the luminescent wheel, and the light in the blue wavelength range is shined on to the light guiding area from a second surface side of the luminescent wheel that is opposite to the first surface side.