Wavefront sensor and method for determining differences in piston and tilt existing between several light beams
US10175115B2 · kind B2 · utility
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4References
20Claims
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Key dates
| Filing date | Sep 18, 2015 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Sep 18, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2009/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wavefront analyzer is modified to simply determine the differences in amplitude and tilt which can exist between the different regions of an initial wavefront (S0). To achieve this, interference between two waves only is produced from beams (F1, F2) which come from neighboring regions on the initial wavefront. Such an analyzer can be used to coherently combine laser radiation produced by different sources arranged in parallel. Another use is for the determination of the differences in height and inclination which exist between the neighboring mirror segments of a Keck telescope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.