Lens barrel

Details Lens barrel Lens barrel

1987-05-12

1989-04-25

Corbin, John K.

350429, 350257, 354400, G02B 702

Patent

active

048242071

ABSTRACT:
A lens barrel having a fixed outer tube, a distance scale window formed in the outer peripheral surface of the fixed outer tube, a focusing ring which is disposed inside of the fixed outer tube and which is capable of moving in the direction of the optical axis and rotatable about the same, a focusing mechanism for moving the focusing ring in the axial and peripheral directions, a distance scale ring facing the inner periphery of the distance scale window and supported such as to be only rotatable about the optical axis, the distance scale ring having distance scale marks formed on its outer peripheral surface, and an interconnecting mechanism for interconnecting the focusing ring with the distance scale ring. The interconnecting mechanism turns the distance scale ring in response to the turning movement of the focusing ring about the optical axis. Simultaneously, the focusing ring moves in the direction of the optical axis without axially moving the distance scale ring.

REFERENCES:
patent: 4359276 (1982-11-01), Tomori
patent: 4416526 (1983-11-01), Tomori et al.
patent: 4472032 (1984-09-01), Kamata et al.
patent: 4527879 (1985-07-01), Hosoe et al.

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