Means for mounting an interchangeable lens on a single lens refl

Details Means for mounting an interchangeable lens on a single lens refl Means for mounting an interchangeable lens on a single lens refl

1976-07-26

1977-12-13

Wintercorn, Richard A.

350257, G03B 1700

Patent

active

040632644

ABSTRACT:
An interchangeable lens having a shutter unit is provided with a relay shaft which is to be connected with a shutter operating mechanism in the camera body. The camera body is provided on the front face with a fixed pin and an axially movable pin which sandwich the relay shaft of the lens therebetween. The camera body is further provided with a lock pin which is connected with the axially movable pin so that the latter is retracted by the depression of the lock pin when the interchangeable lens is attached to the camera body. The lens is first attached to the camera body and then rotated until it is stopped by a stopper. When the lens is stopped, the lock pin is returned to its projected position and the axially movable pin is also returned to its projected position to hold the relay shaft between the same and the fixed pin.

REFERENCES:
patent: 3714878 (1973-02-01), Hasegawa et al.
patent: 3906534 (1975-09-01), Shirasaki
patent: 3968504 (1976-07-01), Komine
patent: 3982257 (1976-09-01), Togashi

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