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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.:

US 9563040 B1

PDFFull Text
Date of Patent:
Feb. 07, 2017

Filed:

Jun. 03, 2016

Wide-angle optical system and endoscope

Applicant:

Olympus Corporation, Tokyo, JP;

Inventor:

Masayuki Mizusawa, Tokyo, JP;

Assignee:

Olympus Corporation, Tokyo, JP;

Attorney:

Andrews Kurth Kenyon LLP

Primary Examiner:

Evelyn A Lester

Int. Cl.
CPC ...
G02B 17/00 (2006.01); G02B 13/18 (2006.01); A61B 1/06 (2006.01); G02B 13/06 (2006.01); G02B 13/04 (2006.01); G02B 17/08 (2006.01); G02B 23/26 (2006.01); G02B 23/24 (2006.01); G02B 27/00 (2006.01); A61B 1/00 (2006.01); G02B 13/00 (2006.01); G02B 9/12 (2006.01); G02B 27/09 (2006.01); G02B 17/06 (2006.01);
U.S. Cl.
CPC ...
G02B 13/06 (2013.01); A61B 1/00 (2013.01); A61B 1/00174 (2013.01); G02B 13/04 (2013.01); G02B 13/18 (2013.01); G02B 17/08 (2013.01); G02B 17/0856 (2013.01); G02B 23/243 (2013.01); G02B 23/26 (2013.01); G02B 27/0025 (2013.01); A61B 1/00096 (2013.01); A61B 1/00163 (2013.01); A61B 1/00183 (2013.01); A61B 1/00195 (2013.01); G02B 9/12 (2013.01); G02B 13/0055 (2013.01); G02B 17/061 (2013.01); G02B 27/0977 (2013.01);
Abstract

A wide-angle optical system includes a first group having negative and positive lenses, a second group having a catadioptric optical element, and a third group. The catadioptric optical element includes a first surface at an object side, a second surface at an image side, and a third surface. The first surface has a first transmission surface and a first reflection surface disposed therearound. The second surface has a second transmission surface and a second reflection surface disposed therearound. The third surface is a circular conical transmission surface that is disposed between the first surface and the second surface and an apex of which is located at the object side.

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