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17 October 2005 Microoptical artificial compound eyes: from design to experimental verification of two different concepts
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Two novel objective types on the basis of artificial compound eyes are examined. Both imaging systems are well suited for fabrication using microoptics technology due to the small required lens sags. In the apposition optics a microlens array (MLA) and a photo detector array of different pitch in its focal plane are applied. The image reconstruction is based on moire magnification. Several generations of demonstrators of this objective type are manufactured by photo lithographic processes. This includes a system with opaque walls between adjacent channels and an objective which is directly applied onto a CMOS detector array. The cluster eye approach, which is based on a mixture of superposition compound eyes and the vision system of jumping spiders, produces a regular image. Here, three microlens arrays of different pitch form arrays of Keplerian microtelescopes with tilted optical axes, including a field lens. The microlens arrays of this demonstrator are also fabricated using microoptics technology, aperture arrays are applied. Subsequently the lens arrays are stacked to the overall microoptical system on wafer scale. Both fabricated types of artificial compound eye imaging systems are experimentally characterized with respect to resolution, sensitivity and cross talk between adjacent channels. Captured images are presented.
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Jacques Duparré, Frank Wippermann, Peter Dannberg, Peter Schreiber, Andreas Bräuer, Reinhard Völkel, and Toralf Scharf "Microoptical artificial compound eyes: from design to experimental verification of two different concepts", Proc. SPIE 5962, Optical Design and Engineering II, 59622A (17 October 2005);


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