0469278 - ÚFP 2017 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Psota, Pavel - Lédl, Vít - Vojtíšek, Petr - Matoušek, Ondřej
Robust retrieval of optical surfaces phase maps in sub-Nyquist multi-wavelength interferometry.
Proceedings of SPIE 10151, Optics and Measurement International Conference 2016. Vol. 10151. Bellingham: SPIE, Society of Photo-Optical Instrumentation Engineers, 2016 - (Kovačičinová, J.), č. článku 1015113. SPIE. ISBN 978-1-5106-0753-8. ISSN 0277-786X.
[OAM 2016, Optics and Measurement International Conference 2016. Liberec (CZ), 11.10.2016-14.10.2016]
Grant CEP: GA MŠMT(CZ) LO1206; GA TA ČR(CZ) TA03010893
Institucionální podpora: RVO:61389021
Klíčová slova: non-nulling interferometry * aspheres * multi-wavelength interferometry * phase unwrapping
Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika
Web výsledku:
http://dx.doi.org/10.1117/12.2256837DOI: https://doi.org/10.1117/12.2256837

This paper reports on phase retrieval method in non-nulling dual-wavelength interferometry. It uses synthetic phase as shape estimation for determination of fringe orders within every pixel. The fringe order map is subsequently used for unwrapping of phase measured at shorter wavelengths. It was experimentally shown that even for inaccurate synthetic phase, the computed phase for short wavelength is correct. The key point is in analysis of phase fields in spatial derivatives where the sensitivity to phase distortions is lower instead of analyzing the phase fields themselves.
Trvalý link: http://hdl.handle.net/11104/0267087