Zoom lens and optical apparatus equipped therewith

Details Zoom lens and optical apparatus equipped therewith Zoom lens and optical apparatus equipped therewith

2008-02-08

2011-10-18

Spector, David N (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S686000

Reexamination Certificate

active

08040615

ABSTRACT:
A zoom lens is provided with comprising a plurality of lens groups including, in order from an object, a first lens group G1having positive refractive power, a second lens group G2having negative refractive power, a third lens group G3, and a fourth lens group G4, upon zooming from a wide-angle end state W to a telephoto end state T, a distance between the first lens group G1and the second lens group G2increasing, a distance between the second lens group G2and the third lens group G3decreasing, and the most image side lens group among the plurality of lens groups moving along an optical axis with a trajectory having convex shape facing the object side, and given conditional expressions being satisfied, thereby excellently correcting chromatic aberration in a farther away shooting range, capable of having excellent optical performance with being compact.

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