Photographic lens barrel

Details Photographic lens barrel Photographic lens barrel

1980-06-18

1982-06-15

Adams, Russell E.

354196, 354198, G03B 1502, G03B 300

Patent

active

043347460

ABSTRACT:
A photographic lens barrel includes display means capable of displaying photographing magnifications, an optical system for imaging the display effected by the display means, and drive means for driving the display means so as to cause the magnification displayed to correspond to the position of a movable focusing lens and for driving a diaphragm blade so as to cause the amount of aperture of the diaphragm blade to correspond to the position of the movable focusing lens.

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

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