Patent ID: 7600930
Filing Date: 2009-10-13
Classification: G03B

Abstract:
1. A lens cover assembly comprising: a lens cover including a base, and a column extending from a central area of the base, the base having a protrusion and defining at least one notch, the base having a slot defined therein configured for receiving a thin rod-like tool during the rotation of the lens cover; and a frame having a stepped hole defined by a first circumferential wall, a second circumferential wall, and a connecting surface connecting the first circumferential wall with the second circumferential wall, the frame having at least two blocks extending from the first circumferential wall, each block overlying the connecting surface with a space formed therebetween in an axis of the stepped hole, the connecting surface defining a groove corresponding to the protrusion of the base; wherein when the lens cover is received in the stepped hole, one of the blocks is received in the at least one notch, then the base is rotated about the axis of the stepped hole so that the at least one notch keeps away from said one of the blocks and the base is sandwiched between the blocks and the connecting surface in the spaces, and the protrusion interacts with the groove for preventing the lens cover from rotating relative to the frame.