Zoom lens camera

Details Zoom lens camera Zoom lens camera

1990-09-27

1992-01-21

Gellner, Michael L.

35414911, 3541951, 354222, G03B 1503, G03B 1312, G03B 300

Patent

active

050831461

ABSTRACT:
A zoom lens camera including a lens barrel cam ring which rotates about an optical axis of the camera and a photographic lens system having a variable focal length which is varied in accordance with the rotation of the lens barrel cam ring. A finder optical system having a movable optical member which varies the finder field of view and a finder driving ring which is rotatable coaxially to and independently of the lens barrel cam ring are also provided. Further, a finder field of view varying mechanism, which moves the movable optical member of the finder optical system, is association with the rotation of the finder driving ring, to vary the finder field of view, and a reduction gear mechanism, which reduces the number of revolutions of the lens barrel cam ring and transmits the reduced rotation to the finder driving ring are provided.

REFERENCES:
patent: 4914461 (1990-04-01), Hori
patent: 4916475 (1990-04-01), Hori
patent: 4944030 (1990-07-01), Haraguchi et al.

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