Abstract
AbstractWe propose two novel methods to measure the cell gap of a liquid crystal cell. One is a method to measure the cell gap of a low cell‐gap TNLC cell by rotating a quarter‐wave retarder. With the proposed method, we can measure the cell gap d of TNLC cells with d < 4 μm. The other is a method to measure the cell gap of a single‐polarizer reflective LC cell as well as the wavelength dependence of the retardation Δnd by using a spectrometer.
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