Optical: systems and elements – Mirror – With support
Reexamination Certificate
2005-01-04
2005-01-04
Sikder, Mohammad (Department: 2872)
Optical: systems and elements
Mirror
With support
C359S876000
Reexamination Certificate
active
06837587
ABSTRACT:
A fast steering mirror method and apparatus comprising employing a plurality of linear actuators and a plurality of springs. Four actuators and four springs may be employed, with one at each corner of the mirror. If only two amplifiers are employed, the linear actuators are then cross coupled. Control means supplies current to the plurality of linear actuators, preferably with each actuator providing force proportional to current supplied, each comprising a motor and one or more current loops around the motor, with the control means causing displacement of the spring paired with a corresponding linear actuator by a distance approximately proportional to current supplied to the corresponding linear actuator and with the control means causing rotation of the mirror by an angle approximately equal to the displacement of the spring divided by the moment arm from the center line of the mirror to the center of the corresponding linear actuator.
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Lockheed Martin Corporation
Myers Jeffrey D.
Peacock Myers & Adams PC
Sikder Mohammad
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