Rear focus zoom lens

Details Rear focus zoom lens Rear focus zoom lens

1984-01-17

1987-12-15

Corbin, John K.

350432, G02B 1514, G02B 1318

Patent

active

047128836

ABSTRACT:
The disclosed zoom lens includes, from front to rear, a magnification-power variable lens assembly which serves for zooming and an image forming lens assembly which is stationary during zooming. The image forming assembly has a lens component B of negative refractive power which is preceded by at least one lens component A movable for focusing and which is followed by at least one lens component C movable for focusing. This structure makes achievement of a compact form and good stability in aberration correction possible throughout the entire focusing range.

REFERENCES:
patent: 3975089 (1976-08-01), Betensky

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