Zoom lens and image pickup apparatus using the same

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United States of America Patent

PATENT NO 10690895
APP PUB NO 20180017770A1
SERIAL NO

15717816

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Abstract

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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:

description='In-line Formulae' end='lead'−0.015≤Tp2G_min_p≤0.015  (1),description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'70.3≤νd1G_max_p  (2),description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'1.76≤nd2G_max_p≤2.3  (3), anddescription='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'0.3≤|f2/f3|≤0.9  (4).description='In-line Formulae' end='tail'

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Patent Owner(s)

Patent OwnerAddress
OM DIGITAL SOLUTIONS CORPORATION49-3 TAKAKURAMACHI HACHIOJI-CITY TOKYO 192-0033

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawamura, Kazuteru Hachioji, JP 62 489
Kon, Toyoki Hachioji, JP 16 129
Murakami, Daichi Hachioji, JP 6 70
Yamada, Yasuharu Sagamihara, JP 67 763
Yanai, Tetsuya Akiruno, JP 22 94

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