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. 24, 2020
Filed:
Oct. 10, 2018
Olympus Corporation, Hachioji-shi, Tokyo, JP;
Tetsuhiro Oka, Tokyo, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
An image capturing device includes: an image capturing system having an optical axis; and at least one illumination system disposed at a position so as to surround the optical axis. The illumination system includes: a reflective surface deflecting part of illumination light; a refractive surface deflecting the other part of the illumination light and the illumination light reflected by the reflective surface; and an emission surface from which the illumination light refracted by the refractive surface is emitted. In a cross section including the optical axis, the reflective surface has an area inclined in such a direction as to become farther away from the optical axis, the refractive surface has an area inclined in such a direction as to approach the optical axis and is disposed between the reflective and emission surfaces. The emission end is disposed at a radial position between rear ends of the refractive and reflective surfaces.