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:
Apr. 30, 2019
Filed:
Jun. 08, 2016
Applicant:
Olympus Corporation, Tokyo, JP;
Inventors:
Kenichiro Abe, Tokyo, JP;
Takahiro Amanai, Tokyo, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 15/16 (2006.01); G02B 13/18 (2006.01); G02B 15/167 (2006.01); G02B 15/20 (2006.01); G02B 21/02 (2006.01); G02B 21/36 (2006.01); G02B 27/00 (2006.01); H04N 5/225 (2006.01); G02B 15/163 (2006.01); G02B 9/60 (2006.01); G02B 5/00 (2006.01); G02B 13/00 (2006.01); G02B 21/26 (2006.01);
U.S. Cl.
CPC ...
G02B 15/16 (2013.01); G02B 13/18 (2013.01); G02B 15/163 (2013.01); G02B 15/167 (2013.01); G02B 15/20 (2013.01); G02B 21/025 (2013.01); G02B 21/361 (2013.01); G02B 27/0025 (2013.01); H04N 5/2254 (2013.01); G02B 5/005 (2013.01); G02B 9/60 (2013.01); G02B 13/0045 (2013.01); G02B 15/14 (2013.01); G02B 21/26 (2013.01);
Abstract
A variable magnification optical system is an optical system in which, a magnification ratio varies from a lower magnification end to a high magnification end, and includes at least a first lens unit having a positive refractive power, which is disposed nearest to an object, and a second lens unit having a positive refractive power, which is disposed on an image side of the first lens unit. At the time of varying magnification, a distance between the first lens unit and the second lens unit changes, and the following conditional expression (1) is satisfied:0<1/β<1  (1),