Finder visual field switching mechanism

Details Finder visual field switching mechanism Finder visual field switching mechanism

1996-08-29

1997-07-29

Metjahic, Safet

Photography

With viewfinder

Selective or adjustable viewfinder field

396435, 396436, G03B 1310, G03B 1702

Patent

active

056529325

ABSTRACT:
When a switching control on an outer wall of a camera is operated and stopped at a click groove corresponding to a desired aspect ratio (for example, C), a CHP lever moves up together with the switching control, and the displacement of the CHP lever is transmitted to an axis rotating lever via a spring. A rotational stroke of the axis rotating lever is smaller than a moving stroke of the CHP lever. A displacement of the CHP lever exceeding the rotational stroke of the axis rotating lever is absorbed by the deformation of the spring. The axis rotating lever is positioned steadily at one of ends of the stroke by the elastic force induced by the deformation of the spring. As a result, the ends of stroke holes in visual field frame pieces can abut against positioning pins without fail.

REFERENCES:
patent: 3619202 (1971-11-01), Bellows
patent: 5325140 (1994-06-01), Torkoshi et al.
patent: 5430517 (1995-07-01), Zander
patent: 5493356 (1996-02-01), Tokui
patent: 5504548 (1996-04-01), Katagiri et al.
patent: 5541684 (1996-07-01), Suzuki et al.

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