为了实现基于数字微镜器件的高质量全息图再现，阐述了数字微镜器件的灰度调制特性及其衍射特性，探讨了数字微镜器件进行全息显示的机理，实现了基于数字微镜器件的全息图高质量再现，并给出了相应的数值模拟结果。结果表明，经过灰度调整后的计算全息图再现效果有明显改善。这一结果对数字微镜用于计算全息显示是有帮助的。

In order to achieve high-quality hologram reconstruction based on digital micro-mirror device(DMD), gray scale adjustment characteristics and Fresnel diffraction characteristics of DMDs were described in detail. Then, the principle of holographic display based on DMD was analyzed. Finally, high-quality hologram was reconstructed. The results demonstrate holographic display was improved obviously after gray scale adjustment. The results are helpful for the display of computer generated hologram based on digital micro-mirror device.