Simple adaptive optical system
Patent 5229889 Issued on July 20, 1993. Estimated Expiration Date: 
December 10, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 10, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMirror actuator control system Pressure actuated deformable mirror Adaptive optical system with synchronous detection of wavefront phase Charge controlled adaptive-optics system Piston error estimation method for segmented aperture optical systems while observing arbitrary unknown extended scenes Patent #: 5128530 InventorApplicationNo. 805401 filed on 12/10/1991US Classes:359/849, Including a plurality of adjustable mirror supports250/201.9, Light beam wavefront phase adaptation359/846Including specified control or retention of the shape of a mirror surfaceExaminersPrimary: Arnold, Bruce Y.Assistant: Ryan, J. P. Attorney, Agent or FirmInternational ClassG02B 005/08AbstractA system for correcting wavefront distortion includes an eight channel deformable mirror 11 attached to a two-axis, tip/tilt mount 12. The deformable mirror 11 reflects an incoming telescopic wavefront 10 onto a beamsplitter 14. The beamsplitter 14 divides the reflected telescopic wavefront 13 into two separate beams 15, 20. The beam 20 reflected by the beamsplitter 14 may be used for experimentation and measurement. The beam 15 transmitted by the beamsplitter 14 is directed toward a modified Hartmann-Shack wavefront sensor 16. The modified Hartmann-Shack sensor 16 detects the slope of the wavefront at several locations across this transmitted beam 15 and provides analog signals 17 representing these slopes to a series of actuator drive circuits 18. The actuator drive circuits 18 provide excitation signals 19 to actuators 22, 30 on the deformable mirror 11 and the two-axis, tip/tilt mount 12. These actuators 22, 30 facilitate the reforming and repositioning of the deformable mirror 11 so as to correct any incoming wavefront 10 distortion.Other References
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