The Cell Thickness and Twist Angle Measurement of Twist Nematic Liquid Crystal Cell by Rotation of a Quarter-wave Plate Using Fourier Analysis Method

摘要：

Proposed a new method of determining the cell thickness and the twist angle of twisted nematic liquid crystal cells, a quarter-wave plate was inserted between the liquid crystal cell and the analyzer, a stepper motor rotated the Retarder by 360? and measured the light intensity of every modulated point, solved the stokes parameters of polarization light exiting from the liquid crystal cell using Fourier analysis method, thereby determining the cell thickness and the twist angle. Expenments indicated that it is suitable for measuring the low-cell-gap accurately. In addition, it also can be applied to the measurement of the cell thickness and twist angle of single polarizer reflected liquid crystal cell.

关键词： Liquid Crystal Stokes Parameter Fourier Analysis Method

作者: Hong-Qing Cui Zhi-Hua Ling

作者单位: Changchun Institute of Optics, Fine Mechanics and Physics,Chinese Academy of Sciences, Changchun 130 Changchun Institute of Optics, Fine Mechanics and Physics,Chinese Academy of Sciences, Changchun 130

会议类型: 国际会议

会议名称: 2007亚洲显示国际会议（AD07）

会议地点: 上海

会议语种:英文

页码: 1138-1143

在线出版日期: 2007-03-12（万方平台首次上网日期，不代表论文的发表时间）