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Proceedings Paper

Ultra-compact close-up microoptical imaging system
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Paper Abstract

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.

Paper Details

Date Published: 20 August 2010
PDF: 8 pages
Proc. SPIE 7786, Current Developments in Lens Design and Optical Engineering XI; and Advances in Thin Film Coatings VI, 77860A (20 August 2010); doi: 10.1117/12.860025
Show Author Affiliations
Andreas Brückner, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Jacques Duparré, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Frank Wippermann, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Robert Leitel, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Peter Dannberg, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Andreas Bräuer, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)


Published in SPIE Proceedings Vol. 7786:
Current Developments in Lens Design and Optical Engineering XI; and Advances in Thin Film Coatings VI
R. Barry Johnson; Virendra N. Mahajan; Simon Thibault, Editor(s)

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