Liquid crystal active optics correction for large space based optical systems
US6107617A · kind A · utility
51Cited by
6References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 5, 1998 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Jun 5, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J9/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Large space-based optical systems are expected to produce optical beams with large wavefront phase aberrations due to their size, weight limitations, optical misaligments and primary mirror imperfections. The present invention combines a phase diversity wavefront sensor with a real-time programmable two-dimensional array of liquid crystal variable retarders for wavefront correction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.