Reduction of laser speckle noise by using particle-dispersed liquid crystals

Laser speckle noise occurs owing to the strong interference that originates in the high coherency of laser light and the surface topography of screen. The suppression of the speckle noise is necessary for laser displays such as an image projection system. To reduce the speckle noise, we have tried t...

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Bibliographic Details
Published in:	Molecular Crystals and Liquid Crystals Vol. 646; no. 1; pp. 93 - 98
Main Authors:	Ishikawa, Hayato, Shibase, Atsushi, Weng, Wu, Ono, Masatoshi, Furue, Hirokazu
Format:	Journal Article
Language:	English
Published:	Philadelphia Taylor & Francis 24-03-2017 Taylor & Francis Ltd
Subjects:	Crystals Dispersions Laser Lasers Liquid crystals Noise Noise reduction optical diffusion Optics particle-dispersed liquid crystal speckle
Online Access:	Get full text
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Summary:	Laser speckle noise occurs owing to the strong interference that originates in the high coherency of laser light and the surface topography of screen. The suppression of the speckle noise is necessary for laser displays such as an image projection system. To reduce the speckle noise, we have tried to control the speckle pattern by using liquid crystals (LCs). In this paper, we offer an idea for suppressing the speckle noise using particle-dispersed LC cells in which the speckle pattern can be varied in addition to the optical diffusive effect.
ISSN:	1542-1406 1563-5287 1527-1943
DOI:	10.1080/15421406.2017.1284540