Optical Haar wavelet transforms with liquid crystal elements

被引：10

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

页码：6433 / 6438

页数：6

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