Interchangeable objective for cameras

Details Interchangeable objective for cameras Interchangeable objective for cameras

1976-11-30

1978-06-13

Griffin, Donald A.

354 46, 354272, G03B 720, G03B 902, G03B 1700

Patent

active

040952479

ABSTRACT:
An interchangeable objective for a camera to provide diaphragm control. The objective has an objective tube and a lens mounting axially movable in the tube. A bayonet ring is provided for connecting the objective tube to a camera. Further means are provided for axially moving said objective tube within the bayonet ring to bring said tube into and out of the camera housing and for engaging said tube into the bayonet ring in the position ready for exposure. A diaphragm adjustment ring is rotatably mounted on the bayonet ring, and a diaphragm control ring rotatably disposed on the lens mounting transmits the adjustment of the adjustment ring upon the diaphragm. A coupling element on the adjustment ring is disengageable from and capable of being engaged into the diaphragm control ring.

REFERENCES:
patent: 3782260 (1974-01-01), Ettischer
patent: 3906529 (1975-09-01), Filipovich
patent: 3968504 (1976-07-01), Konine

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