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. 06, 2018
Filed:
Aug. 04, 2015
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
USHIO DENKI KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is a fluorescence-emitting light source unit that includes a wavelength conversion member having a light receiving surface and a phosphor. The light receiving surface is configured to receive excitation light, and the phosphor is configured to convert the excitation light received by the light receiving surface into fluorescence and emit the fluorescence. The light receiving surface includes a cyclic structure having projections, in which the projections are cyclically arrayed and each have a substantially cone shape. An aspect ratio is about 0.2 or greater, in which the aspect ratio is a ratio of a height of any of the projections to a pitch of the array of the projections. The pitch of the array is of a size that falls within a range in which diffraction of the fluorescence emitted from the phosphor occurs.