Zoom lens and imaging apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9477070
APP PUB NO 20150309290A1
SERIAL NO

14690801

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A five-group zoom lens including, in order from the object side, positive, negative, negative, positive, and positive groups. The first group includes a negative meniscus lens with the concave surface toward the image side, a positive lens and a positive lens. The second group includes a negative lens with the image-side surface having an absolute value of curvature radius smaller than that of the object side surface, a biconcave lens, and a biconvex lens. The third group includes a negative lens with the object side surface having an absolute value of curvature radius smaller than that of the image-side surface, and is moved during focusing on a closer object. The fifth group includes a positive fifth-A group including a biconvex lens, and a negative fifth-B group including a biconcave lens and a biconvex lens, wherein condition expression (1) is satisfied:

description='In-line Formulae' end='lead'0.22<fW/f1<0.27  (1).description='In-line Formulae' end='tail'

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Patent Owner(s)

  • FUJIFILM CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cho, Michio Saitama-ken, JP 163 1297
Ori, Tetsuya Saitama-ken, JP 76 526

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