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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.:

US 9798123 B1

PDFFull Text
Date of Patent:
Oct. 24, 2017

Filed:

Aug. 30, 2016

Zoom lens system

Applicant:

Ricoh Imaging Company, Ltd., Tokyo, JP;

Inventor:

Tatsuyuki Onozaki, Tokyo, JP;

Assignee:

RICOH IMAGING COMPANY, LTD., Tokyo, JP;

Attorney:

Greenblum & Bernstein, P.L.C.

Primary Examiner:

Evelyn A Lester

Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 13/18 (2006.01); G02B 9/60 (2006.01); G02B 15/173 (2006.01); G02B 27/00 (2006.01); G02B 13/00 (2006.01); G02B 9/00 (2006.01); G02B 5/00 (2006.01); G02B 15/20 (2006.01); H04N 5/225 (2006.01); G02B 7/10 (2006.01);
U.S. Cl.
CPC ...
G02B 15/173 (2013.01); G02B 27/0025 (2013.01); G02B 5/005 (2013.01); G02B 7/10 (2013.01); G02B 9/00 (2013.01); G02B 9/60 (2013.01); G02B 13/009 (2013.01); G02B 13/0045 (2013.01); G02B 13/18 (2013.01); G02B 15/14 (2013.01); G02B 15/20 (2013.01); H04N 5/2254 (2013.01);
Abstract

A zoom lens system includes a positive first lens group, a negative second lens group, a positive third lens group, a negative fourth lens group, and a positive fifth lens group, in that order from the object side. Upon zooming from the short to long focal length extremities, at least the first, third and fifth lens groups move in the optical axis direction. The second lens group includes at least four lens elements. Each of the third, fourth and fifth lens groups includes a plurality of lens elements. The following conditions (1) and (2) are satisfied:1.60<1/5<2.46   (1), and−2.46<4/3<−1.80   (2),wherein f1, f3, f4 and f5 designate the focal lengths of the first, third, fourth and fifth lens groups, respectively.

Find Patent Forward Citations

Onozaki, Tatsuyuki. (2017). Zoom lens system (U.S. Patent No. 9798123). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9798123

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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