LCD Transmission Spectrum Based on Light Intensity Gated Imaging

TANG Yuan-he; ZHANG Rui-xia; LIU Han-chen; LIU Shu-lin; LIU Kai; GAO Hai-yang; YANG Xu-san

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LCD Transmission Spectrum Based on Light Intensity Gated Imaging

Device Technology & Physics | 更新时间：2020-08-12

- LCD Transmission Spectrum Based on Light Intensity Gated Imaging
- Chinese Journal of Liquid Crystals and Displays Vol. 25, Issue 2, Pages: 200-204(2010)
- 作者机构：
  
  1. 西安理工大学理学院,陕西西安 710048,E-mail: ltp1801@163.com
  2. 西安工程大学理学院,陕西西安,710048
  3. 北方夜视技术股份有限公司西安分公司,陕西西安,710065
  4. 西安理工大学自动化学院,陕西西安,710048
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN141.9
- Received：23 August 2009，
  
  Revised：02 January 1900，
  
  Published Online：30 April 2010，
  
  Published：30 April 2010
- 稿件说明：
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唐远河;张瑞霞;刘汉臣;刘术林;刘锴;郜海阳;杨旭三;赵高翔;李卿;梁元;叶娜. 基于光强选通成像的液晶透过谱研究[J]. 液晶与显示, 2010,25(2): 200-204

TANG Yuan-he;ZHANG Rui-xia;LIU Han-chen;LIU Shu-lin;LIU Kai;GAO Hai-yang;YANG Xu-san;ZHAO Gao-xiang;LI Qing;LIANG Yuan;YE Na. LCD Transmission Spectrum Based on Light Intensity Gated Imaging[J]. 液晶与显示, 2010,25(2): 200-204
唐远河;张瑞霞;刘汉臣;刘术林;刘锴;郜海阳;杨旭三;赵高翔;李卿;梁元;叶娜. 基于光强选通成像的液晶透过谱研究[J]. 液晶与显示, 2010,25(2): 200-204 DOI：

TANG Yuan-he;ZHANG Rui-xia;LIU Han-chen;LIU Shu-lin;LIU Kai;GAO Hai-yang;YANG Xu-san;ZHAO Gao-xiang;LI Qing;LIANG Yuan;YE Na. LCD Transmission Spectrum Based on Light Intensity Gated Imaging[J]. 液晶与显示, 2010,25(2): 200-204 DOI：

摘要

为了更好地将液晶器件应用于选通成像系统中

从理论上推导出了液晶器件透过率与波长、折射率、电压之间的关系。从双折射率与光强的关系定量分析了扭曲向列相液晶的色散效应。用光栅光谱仪选择380~1 100 nm波段

以SONY公司LCX023CMT型号的TFT-LCD为样品

测试了液晶器件在不同灰度级和波长下的透射率。研究结果表明:液晶器件在可见光波段色散较小

随着灰度值的增加

色散增大;通过自制的光强局部选通成像系统对同一物体进行了对比拍摄

选通后的照片表明液晶器件的色散对成像质量影响不大;该液晶器件对红外光线有近12%的透过率

证明其可以实现近红外波段的强光局部选通成像。

Abstract

In order to better apply LCD to the gated imaging system

based on the electro-optic effect of LCD

the relationships between transmittance and wavelength

birefringence index

voltage are derived theoretically. The dispersive of twisted nematic liquid crystal is quantitatively analyzed from the relationship of effective birefringence and transmittance. By the grating spectrometer

the transmittance of liquid crystal is measured and analyzed using Sony LCX023CMT TFT-LCD at 380~1 100 nm wavelength and altering grey level from 0 ~ 255 in this experiment. It was found that the LCX023CMT LCD has a low dispersion within the visible light. But dispersion increased along with the gray level. Two pictures have been shot under same environment by self-made partial gated imaging system or without which are contrasted each other

and there is little dispersive effect which can not affected the imaging quality. The partial light intensity gated can be realized for the strong near infrared by its 12% transmittance.

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Keywords

references

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Related Institution

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