Apparatus for sensing wavefront aberration
US5120128A · kind A · utility
28Cited by
1References
14Claims
0Family size
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Key dates
| Filing date | Jan 14, 1991 |
| Grant date | Jun 9, 1992 |
| Priority date | — |
| Expiry date | Jan 14, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2009/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wavefront aberration sensor includes a beam splitter, one or more aberration sensor modules and a photodetector for sensing total light power. The aberration sensor modules each provide two voltage outputs from a pair of photodetectors. Differences in the voltage pairs are normalized by the total light power to represent signed aberration amplitudes of phase aberrations present in an input optical beam. The aberration amplitudes may be combined in a digital computer to provide a reconstructed wavefront.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.