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A multi-aperture approach to wafer-level camera lenses

: Brückner, A.; Leitel, R.; Dannberg, P.; Wippermann, F.; Bräuer, A.


Schenk, H. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
MOEMS and Miniaturized Systems X : SPIE Photonics West, 22.-27.1.2011, San Francisco, California, USA
Bellingham, WA: SPIE, 2011 (Proceedings of SPIE 7930)
ISBN: 978-0-8194-8467-3
Paper 79300B
Conference "MOEMS and Miniaturized Systems" <10, 2011, San Francisco/Calif.>
Fraunhofer IOF ()
imaging; imaging system; microoptic; optical design; image processing; compound eye; camera; vision; image sensor; multiaperture

We propose a microoptical approach to ultra-compact optics for real-time vision systems that are inspired by the compound eyes of insects. The demonstrated module achieves about VGA resolution with a total track length of 1.4 mm which is about two times shorter than comparable single aperture optics. The partial images that are separately recorded in different optical channels are stitched together to form a final image of the whole field of view by means of image processing. A software correction is applied to each partial image so that the final image is made free of distortion. The microlens arrays are realized by state of the art microoptical fabrication techniques on wafer-level which are suitable for a potential application in high volume e.g. for consumer electronic products.