Coded-aperture light field (CALF) imaging can record four-dimensional information of incident light rays with a high angular resolution while retaining a camera’s full pixel count. However, existing systems are limited by either imaging speeds and image contrasts of liquid-crystal spatial light modulators or by severe dispersion to broadband light of digital micromirror devices (DMDs), both of which hinder CALF’s widespread applications. Here, we overcome these limitations by developing dispersion-eliminated (DE) CALF imaging. Using a dual-DMD design to compensate for dispersion in the entire visible spectrum, the DECALF imaging system captures ${{1280}} \times {{1024}} \times {{5}} \times {{5}}$ $(x,y,\theta ,\varphi)$ color light field images at 20 Hz. Using static and dynamic three-dimensional (3D) color scenes, we experimentally demonstrate multi-perspective viewing, digital refocusing, and 3D tracking of the DECALF imaging system. We also apply it to the imaging and analyses of escape behaviors of freely moving normal and disease-model zebrafish.

中文翻译：

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使用数字微镜设备的编码孔径宽带光场成像

编码孔径光场（CALF）成像可以记录高角度分辨率的入射光线的四维信息，同时保留相机的全部像素数。但是，现有系统受到液晶空间光调制器的成像速度和图像对比度的限制，或者受到数字微镜设备（DMD）宽带光严重分散的限制，这两者都阻碍了CALF的广泛应用。在这里，我们通过开发消除色散（DE）的CALF成像技术克服了这些限制。使用双DMD设计补偿整个可见光谱中的色散，DECALF成像系统捕获$ {{1280}} \ times {{1024}} \ times {{5}} \ times {{5}} $ $ （x，y，\ theta，\ varphi）$20 Hz的彩色光场图像。使用静态和动态三维（3D）彩色场景，我们实验性地演示了DECALF成像系统的多视角查看，数字重新聚焦和3D跟踪。我们还将其应用于自由移动的正常和疾病模型斑马鱼的逃逸行为的成像和分析。