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. 29, 2020
Filed:
May. 18, 2018
Applicant:
Olympus Corporation, Hachioji-shi, Tokyo, JP;
Inventors:
Kenji Kawasaki, Tokyo, JP;
Masahito Dohi, Tokyo, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 21/06 (2006.01); G02B 21/08 (2006.01); G02B 21/16 (2006.01); G02B 19/00 (2006.01);
U.S. Cl.
CPC ...
G02B 21/086 (2013.01); G02B 19/0009 (2013.01); G02B 19/0066 (2013.01); G02B 21/16 (2013.01);
Abstract
A microscope illumination device includes a white LED light source and an illumination optical system. The white LED light source includes a substrate, a plurality of LED chips, and a fluorescent substance layer provided to cover the plurality of LED chips, the plurality of LED chips being arrayed on the substrate and being configured to emit excitation light. The illumination optical system includes a field stop and a light diffusion element that is arranged between the white LED light source and the field stop. The microscope illumination device satisfies0.2<<1  (1)