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19 August 2010 Ultra-compact close-up microoptical imaging system
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Although several applications of machine vision and biomedical imaging ask for the close-up imaging of extended object fields, only few, mostly bulky solutions exist. We demonstrate the optical design and realization of an ultra-compact close-up imaging system with unity magnification. It uses a multi-aperture approach in order to shorten its total track length to less than 4 mm while achieving a large field of view. The system is made of a stack of several two-dimensional arrays of refractive microlenses. The potential of this setup lies in the combination of digital imaging with microoptical fabrication techniques leading to thin optical components which can be directly attached to an image sensor. Hence, these systems fit into tight spaces and they achieve a high resolution without scanning.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andreas Brückner, Jacques Duparré, Frank Wippermann, Robert Leitel, Peter Dannberg, and Andreas Bräuer "Ultra-compact close-up microoptical imaging system", Proc. SPIE 7786, Current Developments in Lens Design and Optical Engineering XI; and Advances in Thin Film Coatings VI, 77860A (19 August 2010);


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