Two types of optics have been used to create a whole image from plural images by ommatidia: directly creating an optically superimposed image and combining images in electrical processing. Therefore, a system implementing compound eye optics has been applied in this field. 1, 2 The document scanner used in a copier must be compact but with a wide field of view, have a high 600-dpi resolution, and work with a short object distance. A compound eye imaging system, which greatly reduces the size of optics, provides an abundant variety of new options in structures and functions.
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