12 April 2005 High-speed measurement of reflective liquid crystal cell parameter with a polarization-converting device (Invited Paper)
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Proceedings Volume 5741, Emerging Liquid Crystal Technologies; (2005); doi: 10.1117/12.590189
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States
Abstract
We propose a high-speed optical measurement method for determining cell parameters such as cell thicknesses and twist angles of reflective liquid crystal (LC) cells. A polarization-converting device prepared using a circularly-homogeneously aligned LC (CH-LC) cell and a charge couple device (CCD) camera are used. The spatial light intensity distribution from the reflective LC cell through the CH-LC cell and the local minimum point are measured. Then the cell parameters can be derived by using the coordinate values of the point and the Jones matrix analysis.
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Marenori Kawamura, Susumu Sato, "High-speed measurement of reflective liquid crystal cell parameter with a polarization-converting device (Invited Paper)", Proc. SPIE 5741, Emerging Liquid Crystal Technologies, (12 April 2005); doi: 10.1117/12.590189; https://doi.org/10.1117/12.590189
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KEYWORDS
Liquid crystals

Reflectivity

LCDs

Polarizers

Polarization

CCD cameras

Glasses

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