Patent ID: 8444332

Claim:
A lens barrier device, comprising: a barrier body, comprising: a base plate, having a central window; two vanes, each having a pivot and a control protrusion respectively, and the two vanes being pivotally embedded to the base plate; and a rotating plate, having a hollow part corresponding to the central window, two first grooves formed at positions opposite to the two control protrusions, and a linking-up body extended axially from the rotating plate and including a first guiding convex dot formed thereon; wherein the two control protrusions are passed and installed in the two first grooves respectively, and when the rotating plate is rotated, the two first grooves are provided for driving the two vanes to open through the two control protrusions, so as to open or cover the central window; a moving barrel, being hollow in structure, and having a second guiding convex dot formed at the periphery of the moving barrel, and the barrier body being disposed on a side of the moving barrel; and a fixed barrel, being hollow in structure, sheathed on the periphery of the moving barrel, and having a second groove and a third groove formed on a wall of the fixed barrel, and the second groove being sheathed on the first guiding convex dot, and the third groove being sheathed on the second guiding convex dot, and the second groove being provided for guiding the first guiding convex dot to move when the moving barrel slides with respect to the fixed barrel, so as to link the linking-up body and rotate the rotating plate, and the third groove being in a shape capable of driving the moving barrel to move through the second guiding convex dot.