Zoom lens system having a plural number of relay lenses

Details Zoom lens system having a plural number of relay lenses Zoom lens system having a plural number of relay lenses

1979-09-25

1982-05-18

Corbin, John K.

350422, G02B 1502, G02B 1514

Patent

active

043301800

ABSTRACT:
The disclosed invention involves a zoom lens system having a plural number of pick-up tubes whose picture sizes are different from each other, a zoom section which is mounted at the object end of each of the pick-up tubes and which has a focusing front lens group, a variator and a compensator for zooming and a number of relay lenses which have respective focal lengths corresponding to the picture size of each of the pick-up tubes. Each of the relay lenses can be mounted between the zoom sections and one of the pick-up tubes. Each of the relay lenses consists of a primary group and a secondary group and a common attachment lens can be mounted in each of the relay lenses. The distance between the zoom section and the pick-up tube is maintained constant without changing the focus whether the attachment lens is mounted or not.

REFERENCES:
patent: 4009942 (1977-03-01), Hirose
patent: 4015895 (1977-04-01), Hirose
patent: 4146305 (1979-03-01), Tanaka
patent: 4157211 (1979-06-01), Tanaka et al.

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