标题: A measurement method of cell gap for liquid crystal lens
作者: Tang Xian-Zhu
Chung Te-Chen
Jen Ting-Hsien
Lu Jian-Gang
Shieh Han-Ping
交大名义发表
National Chiao Tung University
关键字: liquid crystal lens;cell gap;interference of linear polarized light;transmittance
公开日期: 2013
摘要: There was a problem in current cell gap measurement of liquid crystal (LC) lens. A method was proposed by adopting interference of linearly polarized light in this paper. It was claimed that the incident light was monochromatic light with a uniform distribution of light intensity. The polarization axis of the analyzer was perpendicular or parallel to the polarization axis of polarizer. The difference between light and dark interference fringes was the biggest when the angle was equal to 45 degrees between the rubbing direction of alignment layer in the LC lens and the polarization axis of polarizer. The cell gap of LC lens can be calculated by the transmittance of LC lens center and the max transmittance of its other locations. The tilt angle was equal to the pre-tilt angle of LC at the LC lens center. This method was simple and reliable. Its accuracy is relatively high due to the use of optical interference principle.
URI: http://hdl.handle.net/11536/22815
http://dx.doi.org/10.7498/aps.62.174210
ISSN: 1000-3290
DOI: 10.7498/aps.62.174210
期刊: ACTA PHYSICA SINICA
Volume: 62
Issue: 17
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