Speckle Suppression by 2D Spatial Light Modulator in Laser Projection System

摘要

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.