光学相位分布曲面的自适应调制系统

张鸿州; 朱智康; 黄凯; 陆建钢

doi:10.37188/CJLCD.2020-0327

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光学相位分布曲面的自适应调制系统

器件物理及器件制备 | 更新时间：2021-04-02

- 光学相位分布曲面的自适应调制系统
- Adaptive modulation system for optical phase profile
- 液晶与显示 2021年36卷第4期页码：522-528
- 作者机构：
  
  上海交通大学电子信息与电气工程学院, 上海 200240
- 作者简介：
  
  [ "张鸿州(1996-), 男, 四川成都人, 硕士研究生, 2018年于哈尔滨工业大学获得学士学位, 主要从事液晶光学方面的研究。E-mail:zhanghz@sjtu.edu.cn" ]
  [ "陆建钢(1973-), 男, 浙江嘉兴人, 博士, 研究员, 2003年于浙江大学获得博士学位, 主要从事液晶材料与光电器件方面的研究。E-mail: lujg@sjtu.edu.cn" ]
- 基金信息：
  
  国家自然科学基金重大项目(61727808);国家自然科学基金(61775135)
- DOI：10.37188/CJLCD.2020-0327
  中图分类号： TN206;O753.2
- 收稿日期：2020-12-07，
  
  修回日期：2020-12-24，
  
  纸质出版日期：2021-04
- 稿件说明：
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张鸿州, 朱智康, 黄凯, 等. 光学相位分布曲面的自适应调制系统[J]. 液晶与显示, 2021,36(4):522-528.

Hong-zhou ZHANG, Zhi-kang ZHU, Kai HUANG, et al. Adaptive modulation system for optical phase profile[J]. Chinese journal of liquid crystals and displays, 2021, 36(4): 522-528.
张鸿州, 朱智康, 黄凯, 等. 光学相位分布曲面的自适应调制系统[J]. 液晶与显示, 2021,36(4):522-528. DOI： 10.37188/CJLCD.2020-0327.

Hong-zhou ZHANG, Zhi-kang ZHU, Kai HUANG, et al. Adaptive modulation system for optical phase profile[J]. Chinese journal of liquid crystals and displays, 2021, 36(4): 522-528. DOI： 10.37188/CJLCD.2020-0327.

摘要

液晶调制器件的相位分布一直无法实现精确的区域表征，同时相位分布曲面的驱动电场也只能通过间接光学调制结果进行调整，因此我们构建了一种相位分布曲面的自适应调制系统。通过将相位深度转换为透过率，并经过高分辨率探测器件的灰度测试，可以得到精确的区域相位深度信息。系统将实际的相对透过率分布曲面与预期中理想的相对透过率分布曲面做比较，代入自适应算法得到新的电压信号，形成自动化的闭环控制环路。针对迭代调试复杂的问题，通过自适应调制系统大大减少相位调制过程中的时间，提升相位分布的调制精度。可广泛应用于液晶光栅和液晶透镜等电控相位调制器件。

Abstract

The phase distribution of the liquid crystal modulation device is unable to achieve accurate regional characterization

and the driving electric field of the phase distribution can only be adjusted by the indirect optical modulation result. Therefore

we constructed an adaptive modulation system of the phase distribution. By converting the phase depth to transmittance and passing the gray scale test of the high-resolution detector

the accurate regional phase depth information can be obtained. The system compares the actual relative transmittance distribution with the expected ideal relative transmittance distribution and substitutes the adaptive algorithm to obtain a new voltage signal

forming an automated closed-loop control loop. Aiming at the complicated problem of iterative debugging

the adaptive modulation system greatly reduces the time in the phase modulation process and improves the modulation accuracy of the phase profile. It can be widely used in phase modulation devices such as liquid crystal gratings and liquid crystal lenses.

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