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

Michinori Honma; Toshiaki Nose; Susumu Sato

doi:10.1117/12.365804

14 October 1999 Optical properties of liquid crystal polarization converting devices and their application to optical wavelet transforms

Michinori Honma, Toshiaki Nose, Susumu Sato

Author Affiliations +

Proceedings Volume 3800, Liquid Crystals III; (1999) https://doi.org/10.1117/12.365804
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

Citation Download Citation

Michinori Honma, Toshiaki Nose, and Susumu Sato "Optical properties of liquid crystal polarization converting devices and their application to optical wavelet transforms", Proc. SPIE 3800, Liquid Crystals III, (14 October 1999); https://doi.org/10.1117/12.365804

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