New method for judging azimuth of fast and slow axis of ferroelectric liquid crystal wave plate (FeLC)
A ferroelectric liquid crystal and new method technology, applied in the field of polarized optical detection, can solve the problems of low measurement accuracy, uncomfortable promotion, complicated operation, etc., and achieve the effects of high test accuracy, elimination of 45-degree uncertainty, and wide application range
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[0024] Embodiments of the present invention are described as follows in conjunction with accompanying drawings:
[0025] see figure 1 The structure of a new method for judging the orientation of the fast and slow axes of a ferroelectric liquid crystal wave plate (FeLC) in the present invention consists of a light source 1, an interference filter 2, a polarizer 3, a measured sample (FeLC) 4, a wave plate 5, and a detection Polarizer 6, detector 7, oscilloscope 8 and voltage controller 9. The measured sample (FeLC) 4 is controlled by the voltage controller 9 so that its fast axis orientation changes rapidly with the modulation angle Δ. The light beam generated by the light source 1 is filtered by the interference filter 2 to obtain quasi-monochromatic light. It is converted into an electrical signal and sent to the oscilloscope 8 .
[0026] Adopt above-mentioned measuring structure, a kind of new method measuring step of judging ferroelectric liquid crystal wave plate (FeLC) ...
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