Lens barrel having a cam mechanism

Details Lens barrel having a cam mechanism Lens barrel having a cam mechanism

1997-10-21

1999-03-23

Ben, Loha

Optical: systems and elements

Lens

With support

359700, 359701, 396 72, G02B 702, G02B 1514

Patent

active

058868364

ABSTRACT:
A lens barrel which includes: a cam ring having a plurality of cam slots; a follower barrel on which the cam ring is slidably fitted; a plurality of follower projections formed on the follower barrel to be respectively fitted in the plurality of cam slots; a plurality of ring members respectively fixed to the plurality of follower projections to each project outwardly from an outer periphery of the cam ring in a radial direction; a plurality of washers respectively held between the plurality of follower projections and the plurality of ring members, each of the plurality of washers being formed to have a diameter larger than a width of a corresponding one of the plurality of cam slots so that at least a rim of the each of the plurality of washers contacts the outer periphery of the cam ring.

REFERENCES:
patent: 4707083 (1987-11-01), Iizuka et al.
patent: 4948227 (1990-08-01), Takeyasu
patent: 5161066 (1992-11-01), Tanaka et al.
patent: 5216549 (1993-06-01), Notagashira et al.
patent: 5576894 (1996-11-01), Kuwana et al.
patent: 5691854 (1997-11-01), Yoshida et al.
patent: 5748388 (1998-05-01), Nomura et al.
patent: 5765048 (1998-06-01), Nomura et al.

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