Patent ID: 8936370
Filing Date: 2015-01-20
Classification: G02B,G03B

Abstract:
1. A lens cover module for covering or uncovering a lens, comprising: a rail member; a lens cover movably mounted on the rail member to reciprocate between a first position where the lens cover covers the lens, and a second position where the lens cover uncovers the lens; a first driving device moving the lens cover from the first position to a third position, which is between the first position and the second position, and moving the lens cover from the second position to a fourth position, which is between the first position and the second position; and a second driving device moving the lens cover from the third position to the second position after the first driving device moves the lens cover to the third position, and moving the lens cover from the fourth position to the first position after the first driving device moves the lens cover to the fourth position; wherein the first driving member has at least a magnetic driven member on the lens cover and at least a magnetic member so that the magnetic member generates a magnetic field to drive the magnetic driven member to move the lens cover; wherein the rail member has a rail and a slider movably mounted on the rail, and the lens cover is connected to the slider to move on the rail; wherein the second driving device is a torsional spring having opposite ends pivoted on the slider and the rail; wherein the second driving device is compressed when the lens cover is moving from the first position to the third position, and is released when lens cover is moving from the third position to the second position; wherein the second driving device is compressed when the lens cover is moving from the second position to the fourth position, and is released when lens cover is moving from the fourth position to the first position; and wherein the second driving device swings when the lens cover is moved between the first position and the second position.