View finder of variable magnification

Details View finder of variable magnification View finder of variable magnification

1986-01-21

1988-07-12

Griffin, Donald A.

350423, G03B 1302, G02B 1500

Patent

active

047573368

ABSTRACT:
A view finder having, from front to rear, a first lens unit of negative power, a second lens unit of positive power and a third lens unit of negative power, the second lens unit being moved axially forward as the magnification varies from the smallest to the largest value, while the first lens unit is moved to compensate for the diopter shift resulting from the variation of the magnification.

REFERENCES:
patent: 4623226 (1986-11-01), Fujii
patent: 4624536 (1986-11-01), Nakagawa

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