Light shielding device for automatic focus detecting

摘要

A light-shielding device for a single lens reflex automatic focus camera in which the focus detecting element is normally covered by a shielding plate. The protecting plate is coupled along one edge thereof to a shaft while the end is coupled to one end of an operating lever. The other end of the operating lever is coupled through a U-shaped spring to a mirror operating lever of the camera wherein the U-shaped spring provides a snap action upon release of the shutter curtain which quickly moves the shielding plate to its uncovered position.