Photographic lens capable of photographing the magnifications

Details Photographic lens capable of photographing the magnifications Photographic lens capable of photographing the magnifications

1980-06-17

1982-06-01

Adams, Russell E.

354198, 354289, 354 62, G03B 1748, G03B 1700

Patent

active

043324444

ABSTRACT:
A photographic lens comprises a first image forming optical system including focusing lens means movable in the direction of the optical axis thereof, operating means for driving the focusing lens means, display means capable of displaying the magnification of an object image formed by the first image forming optical system, a second image forming optical system for imaging the display effected by the display means, and means for driving the display means in response to the driving of the focusing lens means by the operating means to cause the magnification display by said display means to correspond to the position of the focusing lens means.

REFERENCES:
patent: 2529894 (1950-11-01), Altman et al.
patent: 3995289 (1976-11-01), Shono

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