Applications of variable focus liquid lenses for curvature wave-front sensors in astronomy

J. Fuentes-Fernández; S. Cuevas; L. C. Alvarez-Nuñez; A. M. Watson

doi:10.1117/12.2056933

22 August 2014 Applications of variable focus liquid lenses for curvature wave-front sensors in astronomy

J. Fuentes-Fernández, S. Cuevas, L. C. Alvarez-Nuñez, A. M. Watson

Proceedings Volume 9148, Adaptive Optics Systems IV; 91485J (2014) https://doi.org/10.1117/12.2056933
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

Curvature wavefront sensors obtain the wave-front aberrations from two defocused intensity images at each side of the pupil plane. Typically, when high modulation speeds are required, as it is the case with Adaptive Optics, that defocusing is done with a fast vibrating membrane mirror. We propose an alternative defocusing mechanism based on an electrowetting variable focus liquid lens. The use of such lenses may perform the required focus modulation without the need of extra moving parts, reducing the overall size of the system.

Citation Download Citation

J. Fuentes-Fernández, S. Cuevas, L. C. Alvarez-Nuñez, and A. M. Watson "Applications of variable focus liquid lenses for curvature wave-front sensors in astronomy", Proc. SPIE 9148, Adaptive Optics Systems IV, 91485J (22 August 2014); https://doi.org/10.1117/12.2056933

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