Wide-angle zoom lens

Details Wide-angle zoom lens Wide-angle zoom lens

1995-12-22

1998-04-07

Sugarman, Scott J.

Optical: systems and elements

Lens

With variable magnification

359684, 359686, G02B 1514

Patent

active

057371296

ABSTRACT:
The zoom lens of present invention includes, in order from the object side, a first lens group of negative refractive power and a second lens group of positive refractive power, such that each lens group moves during zooming from the maximum wide-angle state to the maximum telephoto state so that the distance between the first lens group and the second lens group decreases. The second lens group has, in order from the object side, a first lens subgroup of positive refractive power, having first and second lens units of positive refractive power, and a second lens subgroup of negative refractive power. The zoom lens satisfies at least one of the following conditions:

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patent: 5337098 (1994-08-01), Imafugi et al.
patent: 5339195 (1994-08-01), Ogara
patent: 5402197 (1995-03-01), Okano et al.
patent: 5416558 (1995-05-01), Katayama et al.

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