Zoom lens, optical apparatus and method for manufacturing the zoom lens

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United States of America

PATENT NO 11994746
SERIAL NO

17526082

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Abstract

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A zoom lens comprises, in order from an object: a first lens group (G1) having positive refractive power; a second lens group (G2) having negative refractive power; a third lens group (G3) having positive refractive power; a fourth lens group (G4) having negative refractive power; and a fifth lens group (G5) having positive refractive power, in which the first to the fifth lens groups (G1 to G5) each move in an optical axis direction upon zooming from a wide angle end state to a telephoto end state, at least a part of the fourth lens group (G4) is configured to serve as a focusing lens group to move in the optical axis direction upon focusing, the first lens group (G1) consists of two lenses, and the following conditional expression is satisfied.

description='In-line Formulae' end='lead'0.30<GD3/ft<0.8description='In-line Formulae' end='tail'

    where,GD3 denotes a thickness of the third lens group (G3) on the optical axis, andft denotes a focal length of the zoom lens in the telephoto end state.

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Patent Owner(s)

Patent OwnerAddress
NIKON CORPORATION15-3 KONAN 2-CHOME MINATO-KU TOKYO 1086290 ?1086290

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakamura, Keiichi Tokyo, JP 116 1090

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