Lens mount for video camera

Details Lens mount for video camera Lens mount for video camera

1994-03-01

1995-05-16

Blankenship, Howard B.

Optical: systems and elements

Prism

With reflecting surface

359811, 359819, G03B 1700

Patent

active

054165490

ABSTRACT:
A lens mount device for detachably mounting a lens cylinder having a cylindrical outer surface, on a video camera body which has an optical axis passing therethrough. The lens mount device includes a base plate formed with a circular opening having an axis aligned with the optical axis. A base ring is secured to the base plate and formed with a cylindrical opening coaxial with the circular opening of the base plate to receive the lens cylinder. A slide ring is axially movably disposed within the base ring and formed with an inner surface. The slide ring has a first position where its inner surface is engaged with the outer surface of the lens cylinder and a second position where its inner surface is disengaged from the outer surface of the lens cylinder, when the lens cylinder is mounted on the base ring. The slide ring has cam pins engageable with a cam groove of a cam ring connected with an actuator ring. The actuator ring is rotatably disposed on said base ring and axially movable with respect to the optical axis. The rotating and axial movement of the actuator ring causes the slide ring to move into the first and second positions in association with the cam ring.

REFERENCES:
patent: 5357299 (1994-10-01), Cheeseman

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