Zoom lens barrel

Details Zoom lens barrel Zoom lens barrel

1991-02-14

1992-09-01

Hannaher, Constantine

Optical: systems and elements

Lens

With variable magnification

359823, 35419512, G02B 704, G03B 1300

Patent

active

051444941

ABSTRACT:
A zoom lens barrel having an adjusting ring connected to a cam ring through a gear ring. The cam ring is rotatably supported by a stationary cylinder in which some of the lens groups are housed. The gear ring is fixed to the cam ring. The stationary cylinder is provided with the adjusting ring, which is movable relative to the stationary cylinder and along the optical axis. The adjusting ring is connected to the cam ring in such a manner that the adjusting ring and the cam ring can be rotated relative to each other and can be moved along the optical axis as a single body.

REFERENCES:
patent: 4324457 (1982-04-01), Tomori
patent: 4333712 (1982-06-01), Tomori
patent: 4387968 (1983-06-01), Sekiguchi
patent: 4523815 (1985-06-01), Tomori
patent: 4639083 (1987-01-01), Fuziwara et al.
patent: 4822153 (1989-04-01), Tomori et al.
patent: 4910544 (1990-03-01), Nomura

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