Patent ID: 8783978
Filing Date: 2014-07-22
Classification: G03B

Abstract:
1. A shutter assembly, comprising: a base plate defining a shutter opening having a central axis; a drive ring rotatable about the central axis; a plurality of shutter blades configured to transition between an open position exposing the shutter opening and a closed position substantially occluding the shutter opening in response to rotation of the drive ring; a first solenoid disposed on the base plate; a second solenoid substantially identical to the first solenoid, the second solenoid being positioned such that the drive ring is rotatably disposed between the first and second solenoids; and a magnet moveable in a plane substantially perpendicular to the central axis in response to an electrical field created by at least one of the first and second solenoids, wherein movement of the magnet relative to the central axis drives rotation of the drive ring in a first direction,