Zoom lens and image pickup device

Details Zoom lens and image pickup device Zoom lens and image pickup device

2011-05-31

2011-05-31

Spector, David N (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S680000, C359S689000, C348S240300

Reexamination Certificate

active

07952811

ABSTRACT:
Disclosed herein is a zoom lens formed by arranging a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group having a positive refractive power in order from an object side to an image side, wherein at a time of varying power from a wide-angle end to a telephoto end, the first lens group is moved, and the second lens group is moved to the object side such that an air interval between the first lens group and the second lens group is decreased and such that an air interval between the second lens group and the third lens group is increased.

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