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US 6,293,680 B1Granted
Electromagnetically controlled deformable mirror
AssigneeThermotrex Corporation
InventorDonald G. Bruns
Life of this patent
Estimating the term…
Abstract
A deformable mirror assembly is provided employing a pressure differential across the mirror element to flex the mirror into a configuration. The configuration is determined by an array of positioning members, each having a fixed back end and a movable front end. The invention employs long-stroke electromagnet actuators with built-in position sensing.
Claims1
A deformable mirror assembly comprising:
- a deformable mirror element having a front face and a back face and a perimeter surrounding and connecting the front face and back face;
- an array of positioning members, each having a fixed back end and a moveable front end, the array located behind the mirror element;
- wherein each positioning member comprises an actuator, comprising:
- a first end and a second end;
- a yoke fixed relative to the first end;
- a coil fixed to the yoke;
- an attractive member fixed relative to the second end and selectively attractable to the yoke via energizing the coil;
- and
- an elastically compressible member prebiasing the attractive member away from the yoke;
- wherein the compressible member is an elastomer molded in situ between the yoke and the attractive member.
7 more elements
Dependencies are inferred from the claim text.