Pretilt angle measurement of reflective liquid crystal cells by plural-wavelength Stokes parameter method

Marenori Kawamura; Yoshiaki Goto; Susumu Sato

doi:10.1117/12.506626

5 January 2004 Pretilt angle measurement of reflective liquid crystal cells by plural-wavelength Stokes parameter method

Marenori Kawamura, Yoshiaki Goto, Susumu Sato

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Proceedings Volume 5213, Liquid Crystals VII; (2004) https://doi.org/10.1117/12.506626
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

Stokes parameter methods to determine cell parameters such as a pretilt angle, thickness and twist angle in reflective liquid crystal (LC) cells have been developed by measuring Stokes parameters of reflected light at plural wavelengths. The cell thickness can be determined by measuring one-wavelength Stokes parameters including a near-infrared wavelength, and both the cell thickness and twist angle can also be determined by calculating the Stokes parameter at two wavelengths. Furthermore, these cell parameters containing the pretilt angle as well as cell the cell thickness and twist angle can be determined by using Stokes parameters at three wavelengths. These methods can be applied to determine two-dimensional (2D) cell parameter distributions of the reflective LC cell by using a high resolution CCD camera.

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Marenori Kawamura, Yoshiaki Goto, and Susumu Sato "Pretilt angle measurement of reflective liquid crystal cells by plural-wavelength Stokes parameter method", Proc. SPIE 5213, Liquid Crystals VII, (5 January 2004); https://doi.org/10.1117/12.506626

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