Zoom finder

Details Zoom finder Zoom finder

1999-02-26

2000-07-11

Adams, Russell

Photography

Having variable focal length of camera objective

Having direct viewfinder

396379, G03B 1700

Patent

active

060885386

ABSTRACT:
A zoom finder includes a finder optical system in which at least one lens group is moveable in the optical axis direction thereof to perform the zooming operation; a guide shaft which extends in parallel with the optical axis; a lens mount member which supports the movable lens group and through which the guide shaft extends to support the lens mount member to move in the optical axis direction; and a drive cam which is rotatably supported by the guide shaft, so that the lens mount member moves in the optical axis direction in association with the rotation of the drive cam.

REFERENCES:
patent: 5335030 (1994-08-01), Suzuka
patent: 5337109 (1994-08-01), Ogawa
patent: 5634147 (1997-05-01), Machida
patent: 5678090 (1997-10-01), Nishimura et al.
patent: 5678093 (1997-10-01), Asakura et al.
patent: 5692227 (1997-11-01), Yokota et al.
patent: 5740474 (1998-04-01), Ogawa
patent: 5778262 (1998-07-01), Kobayashi et al.
patent: 5790908 (1998-08-01), Matsuda
patent: 5819121 (1998-10-01), Tsuboi
patent: 5832317 (1998-11-01), Shimizu
patent: 5848302 (1998-12-01), Machida
patent: 5884106 (1999-03-01), Manabe
patent: 5940632 (1999-08-01), Tsuboi

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