Variable magnification lens system

Details Variable magnification lens system Variable magnification lens system

1981-03-17

1984-08-21

Corsin, John K.

G02B 1502

Patent

active

044667078

ABSTRACT:
A compact variable magnification objective lens system with interchangeable lens components comprising, from front to rear, a first lens component of positive power, a second lens component of negative power and a third lens component of positive power. The focal length of the entire system can be changed by interchanging the second lens component by another lens component having a different refractive power from that of the second lens component and by shifting the first lens component simultaneously.

REFERENCES:
patent: 3363964 (1968-01-01), Macher
patent: 4146305 (1979-03-01), Tanaka

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