The application of a light-field camera based on an overlapped square aperture micro-lens array (MLA) is reported. The location and direction of the incident light rays are recorded and reconstructed with a large depth of field by this imaging system. The optimized square MLA for light-field imaging, which increases the fill factor and utilization efficiency of the image sensor, is proposed. The array is fabricated by ultra-precision machining and micro-injection molding, which is economical and ensures that the array remains in high accuracy and consistency. Finally, a light-field imaging system is built with lens groups, an MLA, and an adjustable square stop. A comparative study of the field in-depth and super-resolution image is conducted. The experimental results show that the system significantly increases the range of the depth of the field. The reconstructed image is also enhanced with higher resolution and clarity.

中文翻译：

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使用方形孔径重叠微透镜阵列的大景深成像系统

报道了基于重叠方形孔径微透镜阵列 (MLA) 的光场相机的应用。该成像系统以大景深记录和重建入射光线的位置和方向。提出了用于光场成像的优化方形MLA，它增加了图像传感器的填充因子和利用效率。阵列采用超精密加工和微注射成型制造，既经济又确保阵列保持高精度和一致性。最后，光场成像系统由透镜组、MLA 和可调方形光阑构成。对景深和超分辨率图像进行了比较研究。实验结果表明，该系统显着增加了景深范围。