Patent ID: 6422767
Filing Date: 2002-07-23
Classification: G03B

Abstract:
A camera comprising:a camera body including a picture-taking lens, a pair of first cam grooves, and a pair of second cam grooves branched from middle portions of the first cam grooves and each second cam groove having a width narrower than a width of a corresponding one of the first cam grooves in such a manner that the first cam grooves and the second cam grooves sandwich the picture-taking lens; and a barrier being movable between a position where the barrier covers the picture-taking lens and a position which fully exposes the picture-taking lens, the barrier having a front surface thereof which is coplanar with a front surface of the camera body at the position where the barrier covers the picture-taking lens and which protrudes from the front surface of the camera body at the position which fully exposes the picture-taking lens, the barrier having a pair of first cam followers positioned on the barrier such that the first cam followers sandwich the picture-taking lens, and a pair of second cam followers each having a diameter narrower than that of a corresponding one of the first cam followers and positioned on the barrier such that the second cam followers sandwich the picture-taking lens, the first cam followers being engaged with the first cam grooves and the second cam followers being engaged with the second cam grooves when the barrier is disposed at the position where the barrier covers the picture-taking lens, and both the first and second cam followers being engaged with the first cam grooves when the barrier is disposed at the position fully exposing the picture-taking lens.