Short-periodic measuring of great retardations with a modified Senarmont-method |
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| Authors: | Siegfried Kaufmann Uwe Detlef Zeitner |
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| Institution: | aThüringisches Institut für Textil- und Kunststoff-Forschung, 07407 Rudolstadt, Germany;bFraunhofer Institut für Angewandte Optik und Feinmechanik IOF, 07745 Jena, Germany |
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| Abstract: | Up to now measurements of retardations and of birefringence on flexible, anisotropic media (fibres, films) are done contactlessly, automatically and on-line. For new manufacturing processes of such media first of all fast (short-periodic) and free of false colours measurements are required for very large retardations. A simultaneous combination of the multicolour-Senarmont-method with the discrete Fourier-Analysis (DFA) is presented in this paper. |
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| Keywords: | Polarization short-periodic measuring false colours large retardations multicolor-Senarmont-method |
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