| 摘要 |
In a reflex camera, an arrangement for properly positioning a reflecting member at a viewing plane and minimizing warpage to a viewing surface attached to the reflecting member. The reflecting member is pivotally moved about a hinge arrangement located along one edge of the reflecting member. The forces employed to move the reflecting member, as well as the forces used to retain the reflecting member at its viewing position are applied to the reflecting member through the hinge arrangement. In order to alleviate possible warpage, the reflecting member contacts a frame supporting it in the viewing position at a point located on a line with an area of primary stress influence created by the retaining forces. The contact point and the two hinges form a three point seating arrangement.
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