Optical Haar wavelet transforms with liquid crystal elements

被引：9
|
作者：
He, Z [1 ]
Honma, M [1 ]
Masuda, S [1 ]
Nose, T [1 ]
Sato, S [1 ]
机构：
[1] ADVANTEST LABS LTD, AOBA KU, SENDAI 98931, MIYAGI, JAPAN
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1995年 / 34卷 / 12A期
关键词：
optical Haar wavelet; patterned-electrode liquid crystal cell; optical wavelet transform; liquid crystal microlens array; shadow-casting system;
D O I：
10.1143/JJAP.34.6433
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Optical Haar wavelet transforms are achieved with liquid crystal (LC) elements: patterned-electrode liquid crystal cells serve as generators of optical Haar wavelets, and LC microlens arrays are used in the fabrication of shadow-casting systems. The phase modulation characteristics of the patterned electrode LC cells are investigated by applying a voltage, and the 1-dimension, 2-dimension rectangular and circular Haar wavelets are obtained by adjusting the voltage applied to the LC cells. A. shadow-casting system composed of a LC microlens array is proposed. Due to the variability of the focal length of the LC microlens, good optical wavelet transforms can be achieved readily.
引用
收藏
页码：6433 / 6438
页数：6
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