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:
Feb. 01, 2022
Filed:
Oct. 16, 2018
Applicant:
Mitutoyo Corporation, Kanagawa, JP;
Inventors:
Tatsuya Nagahama, Kanagawa, JP;
Koji Kubo, Kawasaki, JP;
Yuko Shishido, Kanagawa, JP;
Masaki Okayasu, Tokyo, JP;
Atsushi Usami, Kanagawa, JP;
Assignee:
MITUTOYO CORPORATION, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/10 (2021.01); G02B 3/14 (2006.01); G02F 1/29 (2006.01); G02B 13/22 (2006.01); G02B 9/04 (2006.01); H04N 5/225 (2006.01);
U.S. Cl.
CPC ...
G02B 7/102 (2013.01); G02B 3/14 (2013.01); G02B 9/04 (2013.01); G02B 13/22 (2013.01); G02F 1/29 (2013.01); H04N 5/2254 (2013.01);
Abstract
A variable focal length lens apparatus includes an objective lens and an imaging lens that are aligned on the same optical axis; a front side lens system and a rear side lens system that are disposed in a section between the objective lens and the imaging lens on the optical axis, and change a refractive index in accordance with an input drive signal; and a diaphragm disposed in the section between the front side lens system and the rear side lens system on the optical axis.