Lee Byounghyo, Yoo Dongheon, Jeong Jinsoo, Lee Seungjae, Lee Dukho, Lee Byoungho
Opt Lett. 2020 Apr 15;45(8):2148-2151. doi: 10.1364/OL.390552.
We propose a digital micromirror device (DMD) holographic display, where speckleless holograms can be observed in the expanded viewing zone. Structured illumination (SI) is applied to expand the small diffraction angle of the DMD using a laser diode (LD) array. To eliminate diffraction noise from SI, we utilize an active filter array for the Fourier filter and synchronize it with the LD array. The speckle noise is reduced via temporal multiplexing, where the proposed system supports a dynamic video of 60 Hz using the DMD's fast operation property. The proposed system is verified and evaluated with experimental results.
我们提出了一种数字微镜器件（DMD）全息显示器，在该显示器中可以在扩展的观察区域观察到无散斑全息图。采用结构化照明（SI），利用激光二极管（LD）阵列来扩大DMD的小衍射角。为了消除来自SI的衍射噪声，我们将有源滤波器阵列用于傅里叶滤波器，并使其与LD阵列同步。通过时间复用降低散斑噪声，所提出的系统利用DMD的快速操作特性支持60Hz的动态视频。所提出的系统通过实验结果得到了验证和评估。
