Laser & Optoelectronics Progress, Volume. 48, Issue 4, 42201(2011)
Composite Speckle Suppression in 3-LCOS Laser Projection Display
The factor, categorization and optical statistical characteristics of laser speckle shown in three-liquid crystal on silicon (LCOS) laser projection display system are studied, and a measuring method of laser speckle is analyzed. According to this, an optical method of rotating diffuser to reduce the composite speckle is applied. Through a series of simulations and experiments, the contrast of speckle patterns is reduced to 4.2%, which is acceptable to people′s eyes. So the method of rotating diffuser effectively suppresses laser speckle, which has simple optical structure and is easy to implement.
Get Citation
Copy Citation Text
Liu Hong, Na Bailin, Liu Weidong, Wang Weisheng. Composite Speckle Suppression in 3-LCOS Laser Projection Display[J]. Laser & Optoelectronics Progress, 2011, 48(4): 42201
Category: Optical Design and Fabrication
Received: Jun. 3, 2010
Accepted: --
Published Online: Feb. 17, 2011
The Author Email: Hong Liu (Haimi.liu@gmail.com)