Patent ID: 7413356

Claim:
An image-taking apparatus comprising: a mirror, which is movable with respect to an optical path; a mirror drive member, which is movable to a first position at which the mirror is disposed in the optical path and to a second position at which the mirror is retracted outside the optical path; a first biasing member, which produces biasing force for driving the mirror drive member from the second position to the first position; a second biasing member, which produces biasing force for driving the mirror drive member from the first position to the second position; an engaging member, which engages with the mirror drive member to prevent the drive of the mirror drive member by the first biasing member; a first cam, which includes a charge portion for charging the second biasing member and a release portion for releasing the charge of the second biasing member; and a second cam, which releases the engagement of the engaging member with the mirror drive member, wherein the second cam causes the engaging member to retract from the mirror drive member when the mirror drive member and the engaging member are relatively moved toward a position at which their engagement is allowed.