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:
Nov. 08, 2022
Filed:
Jan. 13, 2020
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Junya Ichimura, Utsunomiya, JP;
Masato Katayose, Utsunomiya, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 15/20 (2006.01); G02B 13/18 (2006.01); G02B 9/64 (2006.01); G02B 15/24 (2006.01);
U.S. Cl.
CPC ...
G02B 15/20 (2013.01); G02B 9/64 (2013.01); G02B 13/18 (2013.01); G02B 15/1461 (2019.08); G02B 15/14 (2013.01); G02B 15/146 (2019.08); G02B 15/24 (2013.01);
Abstract
Provided is a zoom lens including, from an object side to an image side: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a positive refractive power; a fourth lens unit having a negative refractive power; a fifth lens unit having a positive refractive power; a sixth lens unit having a negative refractive power; a seventh lens unit having a positive refractive power; and an eighth lens unit having a negative refractive power, in which an interval between each pair of adjacent lens units is changed for zooming.