Patent ID: 7290947
Filing Date: 2007-11-06
Classification: G03B

Abstract:
1. A light controller, comprising: a substrate having an optical path opening, at least one blade mounted on the substrate for opening and closing the optical path opening, at least one driver for driving the at least one blade, and at least one stopper for restricting a movement of the at least one blade between an open position and a closed position and preventing the blade from rebounding, said at least one stopper having a long hole formed in the at least one blade and extending in a direction that the at least one blade moves, and a stopper pin for fitting into the long hole, wherein said at least one blade includes a base end rotatably supported on the substrate by a shaft, said long hole and stopper pin having straight abutting surfaces abutting against each other at the open position and closed position, each of said straight abutting surfaces being inclined at a predetermined angle relative to a straight line between each of the abutting surfaces and the shaft.