数字微镜器件闪耀特性及其在全息显示中的应用

为了提高数字微镜器件的空间光调制性能,发挥其在全息显示和三维重构等方面的作用,研究了数字微镜器件的闪耀特性.结合数字微镜器件的物理结构,利用反射光栅理论分析了数字微镜器件的闪耀规律,进行了理论计算与实验修正,得出了其存在四个相对闪耀状态的结论,而通常实验所要求的24°角入射,为出现相对闪耀状态的最小入射角.据此,可在全息显示中选择恰当的入射角,改变数字微镜器件的闪耀状态,增强全息再现的视觉效果.以傅里叶变换全息为例进行了具体应用研究,通过再现光入射角的调节,可实现闪耀级次的调整,并增强了再现的视觉效果.实验表明,分析结果是正确的.

Blazing Characteristics of DMD and Its Applications in Holographic Display

To improve the spatial light modulation properties of Digital Micromirror Device (DMD),and exert its performance in holographic display and three-dimensional reconstruction,blazing characteristics of DMD was investigated.Wtith the theory of reflection grating and DMD microstructur,it was concluded that there were four relative blazing states of DMD according to theoretical calculations and experimental results.And it was drawn that incident angle of 24° as usually demanded was the least angle of blazing angles.Thus the incident angle could be adjusted properly to change the blazing states of DMD and enhance the visual effects of the holographic representation.Finally,Fourier transform holography display was investigated as an application example,and the experimental results agree well with the theoretical analysis.