15 November 2011 Efficient suppression of the laser speckle in the laser projection system
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Proceedings Volume 8335, 2012 International Workshop on Image Processing and Optical Engineering; 833512 (2011); doi: 10.1117/12.917529
Event: 2012 International Workshop on Image Processing and Optical Engineering, 2012, Harbin, China
Abstract
In this paper, we design a high power and small volume laser source module using the laser diode array for the laser projector system. This module can efficiently suppress speckle noise by reducing the phase coherence using laser diode array. In addition, we use the rotating diffuser to further disturb the coherence of the lasers for lower speckle noise. The experimental results show that the laser source module and the rotating diffuser can effectively eliminate the speckle noise. This new light module with laser diode array can be used in the laser projection system with high brightness, small volume and low speckle noise.
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Yunfang Zhang, Hui Dong, Hui Li, Jingyuan Duan, Ancun Shi, Qing Fang, Yuliang Liu, "Efficient suppression of the laser speckle in the laser projection system", Proc. SPIE 8335, 2012 International Workshop on Image Processing and Optical Engineering, 833512 (15 November 2011); doi: 10.1117/12.917529; https://doi.org/10.1117/12.917529
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KEYWORDS
Speckle

Diffusers

Semiconductor lasers

Projection systems

Speckle pattern

Scattering

Laser scattering

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