Zoom lens

Details Zoom lens Zoom lens

1983-08-10

1987-03-17

Corbin, John K.

G02B 1514, G02B 1520

Patent

active

046502912

ABSTRACT:
A zoom lens having, from front to rear, a zoom section having a plurality of lens groups movable for zooming, and an image forming section which is stationary during zooming, wherein a first lens group counting from the front in the zoom section is of positive refractive power, and a lens group F constituting part of the image forming section is made movable for focusing. A proper range of focal lengths of the aforesaid lens group F related with that of the image forming section is set forth to achieve good correction of aberrations.

REFERENCES:
patent: 4492437 (1985-01-01), Masumoto et al.

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