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Proceedings Paper

Optical properties of liquid crystal polarization converting devices and their application to optical wavelet transforms
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Paper Abstract

The optical properties of the liquid crystal (LC) polarization-converting device, which can convert a uniformly-distributed polarization state to a radially- distributed one (a radially polarized light), are measured. The availability of such the unique device for optical wavelet transforms is discussed experimentally and theoretically. It is found from the observation of Fourier images that the radially polarized light can be regarded as a 1D Haar wavelet and a circular Haar wavelet in the case with and without an analyzer, respectively. Therefore, we can select two types of Haar wavelets by attaching or removing the analyzer. To discuss the edge extraction properties, the wavelet transforms are implemented by using computer simulations. It is confirmed that the radially polarized light produced by the LC polarization-converting device is useful for extracting edge features of 1D and 2D images in the case with and without the analyzer, respectively.

Paper Details

Date Published: 14 October 1999
PDF: 8 pages
Proc. SPIE 3800, Liquid Crystals III, (14 October 1999); doi: 10.1117/12.365804
Show Author Affiliations
Michinori Honma, Akita Univ. (Japan)
Toshiaki Nose, Akita Univ. (Japan)
Susumu Sato, Akita Univ. (Japan)

Published in SPIE Proceedings Vol. 3800:
Liquid Crystals III
Iam-Choon Khoo, Editor(s)

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