Gm Global Technolgoy Operations, Inc.

Kent State University

John Harden

Kai-Han Chang

Liang-Chy Chien

An optical display device includes a coherent light source generating a coherent light beam in visible, ultraviolet, or infrared ranges. The coherent light beam is directed at a liquid crystal component. A plurality of liquid crystals and a plurality of nanoparticles having an average diameter of &#x2264;about 450 nm are disposed in an interior compartment. An electrical source is in electrical communication with the first and the second electrodes. When no voltage or current is applied, a filtered light beam transmitted or reflected from the liquid crystal component exhibits a first speckle contrast &#x2265;about 0.28. When voltage or current is applied, the microparticles are induced to move and the filtered light beam has a second speckle contrast that is &#x2264;about 0.2 and in certain aspects may be &#x2264;about 0.03. A method of reducing speckle in an optical device having a coherent light source is also provided.

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Streetsboro, OH, United States of America

John Harden