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Automated birefringence dispersion measurements
Measurement Science and Technology, 2006A new technique has been developed for investigation of optical dispersion of either natural or stress-induced birefringence. A spectropolarimeter containing a computer-controlled monochromator and two plane polarizers records polariscopic images of a sample via a TV-camera and a video frame grabber in two polarizer configurations: parallel and crossed.
A L Bajor, T Piatkowski, M Leśniewski
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On the technique of measuring flow birefringence
Journal of Polymer Science, 1957AbstractA discussion is given of a number of problems concerning the measurements of flow birefringence and an apparatus is described in which the uncertainties arising from these problems are reduced as much as possible. The problems discussed are: diffraction of light in the narrow gap formed by the cylinders; influence of the optical properties of ...
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Towards Automatic Measurement of Birefringence
Nature, 1967THE measurement of optical anisotropy is more difficult in photoelastic analysis than in other fields because of the variation in the birefringence from point to point. In addition, in three dimensional “frozen” systems the relative retardation is at most a few wavelengths, frequently less than one, and a discrimination of 0.01 wavelength can produce ...
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Automated birefringence measurement system
Journal of Physics E: Scientific Instruments, 1979The system has proved itself as an invaluable laboratory tool for the characterisation of the polarisation properties of optical fibres. The system is described and an example is given of the measurements which have been made. The linear birefringence results are accurate to within 0.5 degrees for a wide range of birefringence.
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Birefringence measurement using a confocal setup with a pair of birefringent lenses
Optical Engineering, 2008A confocal microscopic setup with a pair of birefringent lenses having their crystal axes crossed is used to measure birefringence of thin samples. The method can be used to measure phase down to the order of /10. The fast and slow axes of the object also can be identified.
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The measurement of dynamic birefringence
Journal of Polymer Science, 1961S. Onogi, D. A. Keedy, R. S. Stein
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BACKGROUND CORRECTION FOR BIREFRINGENCE MEASUREMENTS
2021GOMEZ DIAZ ARIEL +6 more
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A Comparison of Streaming Birefringence and Rotary Strain Birefringence Measurements
Transactions of the Society of Rheology, 1963W. Philippoff, S. J. Gill
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Birefringence measurements by double speckle photography
Applied Optics, 1987L M, Bernardo, O D, Soares
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