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浏览/检索结果: 共2条，第1-2条 帮助 限定条件 发表日期：2007     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 The cell thickness and twist angle measurement of twist nematic liquid crystal cell by rotation of a quarter-wave plate using Fourier analysis method 会议论文 2007 Cui H. Q.; Ling Z. H.; East China Normal Unviersity P. 收藏  |  浏览/下载：8/0  |  提交时间：2013/03/28 The cell thickness and twist angle measurement of twist nematic liquid crystal cell by rotation of a quarter-wave plate using fourier analysis method (EI CONFERENCE) 会议论文 Asia Display 2007, AD'07, March 12, 2007 - March 16, 2007, Shanghai, China Cui H.-Q.; Ling Z.-H. 收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25 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. Experiments 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.