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:
Jan. 28, 2020
Filed:
May. 10, 2018
Applicant:
Nikon Corporation, Minato-ku, Tokyo, JP;
Inventor:
Atsushi Shibayama, Tokyo, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 15/177 (2006.01); G02B 15/20 (2006.01); G02B 13/00 (2006.01); G02B 13/18 (2006.01); G03B 17/08 (2006.01); G03B 3/00 (2006.01); G03B 17/12 (2006.01); G02B 15/17 (2006.01); G02B 5/00 (2006.01); G02B 15/173 (2006.01); G02B 27/00 (2006.01); H04N 5/225 (2006.01); H04N 5/232 (2006.01);
U.S. Cl.
CPC ...
G02B 15/14 (2013.01); G02B 5/005 (2013.01); G02B 13/009 (2013.01); G02B 13/18 (2013.01); G02B 15/17 (2013.01); G02B 15/173 (2013.01); G02B 15/177 (2013.01); G02B 15/20 (2013.01); G02B 27/0025 (2013.01); G03B 3/00 (2013.01); G03B 17/08 (2013.01); G03B 17/12 (2013.01); H04N 5/2254 (2013.01); H04N 5/23212 (2013.01);
Abstract
In an optical system (ZL) capable of imaging in a plurality of object side media (for instance, air and water) whose refractive indexes are different from each other, the optical system is composed of, in order from an object, a front lens group (G) whose position in an optical axis fixed, and a rear lens group (for instance, Gto G), and the rear lens group comprises at least two moving lens groups (for instance, Gand G), and at least two moving lens groups in the rear lens group are moved along the optical axis upon changing between object side media.