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Proceedings Paper

A new method for laser speckle suppression
Author(s): Michael Tilleman
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Paper Abstract

The objective of this work is the suppression of speckles in an image illuminated by a remote laser. This is accomplished by a novel method in which the illuminating laser beam propagates through a multimode fiber dithered at an arbitrary section, then passes through a microlens array prior to illuminating the image generator. Thereby the speckle contrast is reduced to its minimum value for dithering frequencies of at least 25 Hz, attaining a magnitude speckle contrast of less than 12%, and illumination homogeneity across the illumination filed of less than 20%.

Paper Details

Date Published: 15 February 2010
PDF: 7 pages
Proc. SPIE 7618, Emerging Liquid Crystal Technologies V, 76180A (15 February 2010); doi: 10.1117/12.847221
Show Author Affiliations
Michael Tilleman, Elbit Systems of America LLC (United States)


Published in SPIE Proceedings Vol. 7618:
Emerging Liquid Crystal Technologies V
Liang-Chy Chien, Editor(s)

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