Abstract: A shutter assembly includes a base plate defining a shutter opening having a central axis, and a drive assembly coupled to the base plate. The drive assembly includes a rotatable pinion gear, and a drive rack mating with the pinion gear and moveable in a substantially linear direction in response to rotation of the pinion gear. The shutter assembly also includes a plurality of shutter blades operably connected to the drive rack. The plurality of shutter blades are configured to rotate between an open position exposing the shutter opening and a closed position substantially occluding the shutter opening in response to movement of the drive rack in the substantially linear direction.

Abstract: A shutter assembly for an optical system includes a shutter housing that maintains optical alignments with adjoining parts of the optical system and a shutter mechanism that can be removed and replaced within the shutter housing without disturbing the optical alignments between the shutter housing and the adjoining parts of the optical system. The shutter mechanism can also include alignment features with the shutter housing for restoring the original optical alignment of the shutter mechanism with the adjoining parts of the optical system.

Abstract: A shutter assembly for an optical system includes a shutter housing that maintains optical alignments with adjoining parts of the optical system and a shutter mechanism that can be removed and replaced within the shutter housing without disturbing the optical alignments between the shutter housing and the adjoining parts of the optical system. The shutter mechanism can also include alignment features with the shutter housing for restoring the original optical alignment of the shutter mechanism with the adjoining parts of the optical system.