Charge controlled adaptive-optics system
US4967063A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1988 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Jun 16, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J9/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
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 mir…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.