Digital projection display has become the mainstream in modern displayfield. Accurate focusing of the array pixel devices in these systems determines the quality of the displaying effect.
数字投影显示已成为现代数字显示领域的主流，阵列像素器件投影成像的的精确会聚，直接决定了显示的效果。
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Its include virtual assembly, model teaching, flow fielddisplay, test-run experiment. The system make use of the technology of virtual let the teaching effect visualize, real time, reality.
The invention relates to a method for reducing the laser speckle effect, which belongs to the laser field and especially belongs to the laser display field.