Invention Grant
- Patent Title: Zoom lens and image pickup apparatus using the same
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Application No.: US15717816Application Date: 2017-09-27
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Publication No.: US10690895B2Publication Date: 2020-06-23
- Inventor: Toyoki Kon , Kazuteru Kawamura , Yasuharu Yamada , Tetsuya Yanai , Daichi Murakami
- Applicant: OLYMPUS CORPORATION
- Applicant Address: JP Tokyo
- Assignee: OLYMPUS CORPORATION
- Current Assignee: OLYMPUS CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz & Volek PC
- Main IPC: G02B15/163
- IPC: G02B15/163 ; G02B13/00 ; G02B15/20 ; G02B27/64 ; G02B15/173

Abstract:
A zoom lens includes in order from an object 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, and a fifth lens unit having a positive refractive power. The first lens unit includes a positive lens, and the second lens unit includes a positive lens, and the following conditional expressions (1), (2), (3), and (4) are satisfied: −0.015≤Tp2G_min_p≤0.015 (1), 70.3≤νd1G_max_p (2), 1.76≤nd2G_max_p≤2.3 (3), and 0.3≤|f2/f3|≤0.9 (4).
Public/Granted literature
- US20180017770A1 ZOOM LENS AND IMAGE PICKUP APPARATUS USING THE SAME Public/Granted day:2018-01-18
Information query