Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1988-06-16
1990-10-30
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
350360, G01J 120
Patent
active
049670638
ABSTRACT:
A charge controlled adaptive-optics system is disclosed for correcting phase distortion in a wavefront of a propagating optical wavefront in real time. In a preferred embodiment a selectively deformable piezoelectric mirror receives an incoming distorted optical wavefront and reflects it to a lenslet array optical sensor. The sensor generates a large plurality of focused light points, the offset positions of which represent wavefront tilts at a plurality of locations on the distorted wavefront. A misalignment calibration system calculates a plurality of calibration signals representing aberrations in the mirror surface and the sensor, and converts the signals into a plurality of representative light rays of varying intensity. The light ray are then superimposed on the light points to form a plurality of calibrated light points, which are then input to an electron-beam generating system. The generating system generates a plurality of electron beams of varying intensity that operate to supply and remove electrical charges from electrodes mounted within the piezoelectric mirror. The local electric fields induced by the charges result in a selective deformation of the piezoelectric mirror that corrects the distortion in the reflected wavefront.
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patent: 4271355 (1981-06-01), Wisner et al.
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patent: 4737621 (1988-04-01), Gonsiorowski et al.
Hardy, "Active Optics: A New Technology for the Control of Light", Proceedings of the IEEE, vol. 66, No. 6, Jun. 1978.
Smith Patrick L.
Wang Charles C. P.
Burke William J.
Shami Khaled
The Aerospace Corporation
Westin Edward P.
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