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Optical Engineering

Transmissive liquid crystal light valve for parallelism optical thresholding operation
Author(s): Yong-Jing Wang; Zhuanyun Guo; Zhi-Guo Meng; YanXin Zhang; Teiqun Zhang; Shaozhen Xiong
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Paper Abstract

A transmissive liquid crystal valve for carrying out optical thresholding operations is proposed. It operates in parallel, that is, all the pixels of input are processed together simultaneously. The device is based on an amorphous silicon photoconductor and the features of liquid crystals. It does not require control architecture using very large scale integration (VLSI), so we can achieve a larger aperture ratio, higher resolution (more than 45 lines/mm), and a higher space-bandwidth product (more than 4 X 105 pixels). Its response time is about 10 ms. Its processing capacity can reach approximately 2 X 107 thresholding operations/s. The light valve does not break the beam propagation path, and can plug and play easily in optical processing and neural network systems. Its design, fabrication, and thresholding features are presented.

Paper Details

Date Published: 1 November 1996
PDF: 5 pages
Opt. Eng. 35(11) doi: 10.1117/1.601071
Published in: Optical Engineering Volume 35, Issue 11
Show Author Affiliations
Yong-Jing Wang, Nankai Univ. (United States)
Zhuanyun Guo, Nankai Univ. (China)
Zhi-Guo Meng, Nankai Univ. (Hong Kong)
YanXin Zhang, Nankai Univ. (China)
Teiqun Zhang, Nankai Univ. (China)
Shaozhen Xiong, Nankai Univ. (China)


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