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, 2022
Filed:
Jun. 28, 2019
Applicant:
Olympus Corporation, Hachioji, JP;
Inventor:
Tetsuhiro Oka, Tokyo, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 1/07 (2006.01); F21V 8/00 (2006.01); A61B 1/00 (2006.01); G02B 5/02 (2006.01);
U.S. Cl.
CPC ...
A61B 1/07 (2013.01); A61B 1/00096 (2013.01); G02B 5/0242 (2013.01); G02B 6/0008 (2013.01);
Abstract
An illumination optical system includes a diffusion element that diffuses illumination light entering from a light source, the diffusion element emitting the illumination light. The diffusion element is formed by dispersing fine particles of at least one kind in a homogeneous medium that is made of a material different from the fine particles, and the diffusion element satisfies a specific conditional expressions.