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32.2: Speckle Suppression by 2D Spatial Light Modulator in Laser Projection System
Author(s) -
Chang YanShuo,
Lin Hoang Yan,
Hsu WeiFeng
Publication year - 2011
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3621344
Subject(s) - speckle pattern , spatial light modulator , optics , liquid crystal on silicon , speckle noise , projection (relational algebra) , diffuser (optics) , laser , optical modulator , image quality , materials science , physics , computer science , light source , computer vision , phase modulation , image (mathematics) , liquid crystal , algorithm , phase noise
To diminish the speckle effect of a laser projection system, an LCoS spatial light modulator was employed to replace the commonly‐used diffuser and beam shaping components. The speckle contrast was reduced from 0.887 to 0.315, the image quality was greatly improved, and the system complexity was decreased as well.