Signal transmission device in an intermediate lens barrel

Details Signal transmission device in an intermediate lens barrel Signal transmission device in an intermediate lens barrel

1981-10-27

1983-05-10

Hix, L. T.

G03B 1714

Patent

active

043826717

ABSTRACT:
Signal transmission device in an intermediate lens barrel comprises a signal surface, a first inclined surface and a second inclined surface. When the intermediate lens barrel is connected to an objective lens, the signal surface gets in engagement with a signal member on the objective lens barrel and is shifted in the direction of the optical axis. When the intermediate lens barrel is rotated to connect it to a camera, a signal detection member on the camera is guided to the signal surface by the first inclined surface. The second inclined surface guides the detection member to a reference surface on the intermediate lens barrel when the latter is rotated in the direction to disconnect the barrel from the camera.

REFERENCES:
patent: 3683765 (1972-08-01), Iura
patent: 4003068 (1977-01-01), Hashimoto et al.
patent: 4269497 (1981-05-01), Ishizaka et al.
patent: 4314752 (1982-02-01), Ishizaka et al.

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