Zoom lens having well-compensated distortion

Details Zoom lens having well-compensated distortion Zoom lens having well-compensated distortion

1973-12-20

1976-12-14

Corbin, John K.

G02B 1518

Patent

active

039972445

ABSTRACT:
A zoom lens comprising a convergent lens group as a focusing lens, a movable divergent lens group as a variator lens, a compensator lens group and a relay lens group being positioned in said order from an object side, wherein the interval between the principal point of said convergent lens group and the principal point of said divergent lens group is 70% to 130% of the absolute value of the focal distance taken by said divergent lens group when the focal distance of the total system is the minimum.

REFERENCES:
patent: 3820876 (1974-06-01), Macher

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