Patent ID: 6872013

Claim:
An iris, comprising: a stator assembly comprising a frame coupled to an electrically wound substantially annular magnetic core; a rotor rotatably coupled to said substantially annular magnetic core and defining a channel, said rotor comprising an annular member comprising an upper surface and a lower surface and a common edge, said rotor further comprising a plurality of magnets coupled to said upper surface, said annular member defining at least one opening in said lower surface; and a diaphragm coupled to said stator assembly comprising a plurality of diaphragm leaves pivotally arranged to form an adjustable aperture substantially concentric with said channel; a first portion of at least one of said plurality of diaphragm leaves extending from said diaphragm and coupled to said stator, a second portion of another of said plurality of diaphragm leaves extending from said diaphragm and coupled to said rotor such that said second portion fits within said at least one opening.