Journal
OPTICS EXPRESS
Volume 20, Issue 12, Pages 13532-13538Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.013532
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A compact image scanner is designed by using a compound eye system with plural optical units in which a ray path is folded by reflective optics. The optical units are aligned in two lines and take each image of a separated field of view (FOV), slightly overlapped. Since the optical units are telecentric in the object space and the magnification ratio is constant regardless of the object distance, the separated pieces of a total image are easily combined with each other even in the defocused position. Since the optical axes between adjacent optical units are crossed obliquely, object distance is derived from the parallax at each boundary position and an adequate deblurring process is achieved for the defocused image. (C) 2012 Optical Society of America
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