Zoom lens, information device, and imaging apparatus

Details Zoom lens, information device, and imaging apparatus Zoom lens, information device, and imaging apparatus

2010-03-18

2011-11-08

Collins, Darryl J (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

Reexamination Certificate

active

08054559

ABSTRACT:
A zoom lens includes a first lens group having a positive refracting power, a second lens group having a negative refracting power, a third lens group having a positive refracting power, and a fourth lens group having a positive refracting power, being disposed in order from an object side, and an aperture stop disposed at an object side of the third lens group. When changing the magnification from a wide angle end to a telephoto end, an interval between the first and second lens groups increases, an interval between the second and third lens groups decreases, and an interval between the third and fourth lens groups changes.

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