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. 14, 2019
Filed:
Mar. 21, 2016
Olympus Corporation, Tokyo, JP;
Minoru Ueda, Kanagawa, JP;
Masahito Watanabe, Tokyo, JP;
Masahiro Imamura, Tokyo, JP;
Mayu Miki, Tokyo, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
A zoom lens includes, in order from the object side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit having a positive refractive power. The first lens unit includes a negative lens and a positive lens. The zoom lens satisfies the following conditional expression (1):Σd/f<0.4  (1)where Σd3 is the total sum of the thickness of the lenses included in the first to third lens units of the zoom lens on the optical axis, and fis the focal length of the entire zoom lens system at the telephoto end.