Simple method for controlled variation of liquid crystal cell thickness

2004 ◽  
Vol 43 (12) ◽  
pp. 3021 ◽  
Author(s):  
Boris Apter
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Cell ◽  
Simple Method ◽  
Crystal Cell ◽  
Cell Thickness

scholarly journals Fast Method for Liquid Crystal Cell Spatial Variations Estimation Based on Modeling the Spectral Transmission

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3874 ◽  
Author(s):  
Shauli Shmilovich ◽  
Liat Revah ◽  
Yaniv Oiknine ◽  
Isaac August ◽  
Ibrahim Abdulhalim ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Cell ◽  
Spatial Variations ◽  
Crystal Phase ◽  
Fast Method ◽  
Spectral Transmission ◽  
Liquid Crystal Phase ◽  
Simple Method ◽  
Crystal Cell ◽  
Phase Retarders

Liquid crystal phase retarders are utilized by photonic devices and imaging systems for various applications, such as tunable filtering, light modulation, polarimetric imaging, remote sensing and quality inspection. Due to technical difficulties in the manufacturing process, these phase retarders may suffer from spatial non-uniformities, which degrade the performance of the systems. These non-uniformities can be characterized by measuring the spectral transmission at each voltage and each point on the liquid crystal cell, which is time consuming. In this work, we present a new fast and simple method for measuring and computationally estimating the spatial variations of a liquid crystal phase retarder with planar alignment. The method is based on measuring the spectral transmission of the phase retarder at several spatial locations and estimating it at others. The experimental results show that the method provides an accurate spatial description of the phase retarder and can be employed for calibrating relevant systems.

Dichroic Azo Dyes for Guest-Host Liquid-Crystal Cell

1982 ◽  
Vol 21 (Part 1, No. 1) ◽  
pp. 191-192 ◽  
Author(s):  
Hidehiro Seki ◽  
Chiyoko Shishido ◽  
Shigeo Yasui ◽  
Tatsuo Uchida
Keyword(s):  
Liquid Crystal ◽  
Azo Dyes ◽  
Liquid Crystal Cell ◽  
Crystal Cell
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