Wide-angle zoom lens having five lens units

Details Wide-angle zoom lens having five lens units Wide-angle zoom lens having five lens units

1991-09-03

1993-10-12

Mis, David

Optical: systems and elements

Lens

With variable magnification

359682, G02B 960, G02B 1304, G02B 1514, G02B 1520

Patent

active

052531139

ABSTRACT:
A wide-angle zoom lens comprising five lens units of negative, negative, positive, negative and positive refractive powers in this order from the object side, zooming from the wide-angle end to the telephoto end being performed by moving the second lens unit so as to have a locus convex toward the image side and moving the third and fifth lens units toward the object side.

REFERENCES:
patent: 4991942 (1991-02-01), Fujibayashi et al.
patent: 5000550 (1991-03-01), Takahashi et al.
patent: 5056900 (1991-10-01), Mukaiya et al.

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