Line of Sight Correction of High-Speed Liquid Crystal Using Overdriving Technology
Guo, Hongyang2,3; Li, Qing2,3,4; Xu, Yangjie2,3; Huang, Yongmei2,3; Du, Shengping2,3
刊名ELECTRONICS
2020-09-10
卷号9期号:9页码:9091477-1-11
关键词Liquid Crystal Overdrive Fpga Response Time Diffraction
ISSN号2079-9292
DOI10.3390/electronics9091477
文献子类期刊论文
英文摘要

In the line of sight correction system, the response time of the liquid crystal spatial light modulator under the normal driving voltage is too long to affect system performance. On the issues, an overdriving method based on a Field-Programmable Gate Array (FPGA) is established. The principle of the overdrive is to use a higher voltage difference to achieve a faster response speed of liquid crystal. In this scheme, the overdriving look-up table is used to seek the response time of the quantized phase, and the liquid crystal electrode is driven by Pulse-Width Modulation (PWM). All the processes are performed in FPGA, which releases the central processing unit (CPU) memory and responds faster. Adequate simulations and experiments are introduced to demonstrate the proposed method. The overdriving experiment shows that the rising response time is reduced from 530 ms to 34 ms, and the falling time is from 360 ms to 38 ms under the overdriving voltage. Typical light tracks are imitated to evaluate the performance of the line of sight correction platform. Results show that using the overdrive the -3 dB rejection frequency was increased from 1.1 Hz to 2.6 Hz. The suppression ability of the overdrive is about -20 dB at 0.1 Hz, however the normal-driving suppression ability is only about -13 dB.

出版地BASEL
WOS研究方向Engineering
语种英语
出版者MDPI
WOS记录号WOS:000581206600001
内容类型期刊论文
源URL[http://ir.ioe.ac.cn/handle/181551/10050]  
专题光电技术研究所_光电工程总体研究室(一室)
作者单位1.Univ Elect Sci & Technol China, Sch Optoelect Sci & Engn, 4 Sect 2 North Jianshe Rd, Chengdu 610054, Peoples R China
2.Chinese Acad Sci, Key Lab Opt Engn, 1 Guangdian Rd, Chengdu 610209, Peoples R China
3.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
4.Univ Chinese Acad Sci, Sch Optoelect, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Guo, Hongyang,Li, Qing,Xu, Yangjie,et al. Line of Sight Correction of High-Speed Liquid Crystal Using Overdriving Technology[J]. ELECTRONICS,2020,9(9):9091477-1-11.
APA Guo, Hongyang,Li, Qing,Xu, Yangjie,Huang, Yongmei,&Du, Shengping.(2020).Line of Sight Correction of High-Speed Liquid Crystal Using Overdriving Technology.ELECTRONICS,9(9),9091477-1-11.
MLA Guo, Hongyang,et al."Line of Sight Correction of High-Speed Liquid Crystal Using Overdriving Technology".ELECTRONICS 9.9(2020):9091477-1-11.
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