Infrared camera based on a curved retina

Design of miniature and light cameras requires an optical design breakthrough to achieve good optical performance. Solutions inspired by animals' eyes are the most promising. The curvature of the retina offers several advantages, such as uniform intensity and no field curvature, but this featur...

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Bibliographic Details
Published in:Optics letters 2012-02, Vol.37 (4), p.653-655
Main Authors: Dumas, Delphine, Fendler, Manuel, Berger, Frédéric, Cloix, Baptiste, Pornin, Cyrille, Baier, Nicolas, Druart, Guillaume, Primot, Jérôme, le Coarer, Etienne
Format: Article
Language:English
Subjects:
Cameras
Curvature
Curved
Engineering Sciences
Image contrast
Infrared radiation
Mathematical analysis
Optics
Photonic
Retina
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Summary:Design of miniature and light cameras requires an optical design breakthrough to achieve good optical performance. Solutions inspired by animals' eyes are the most promising. The curvature of the retina offers several advantages, such as uniform intensity and no field curvature, but this feature is not used. The work presented here is a solution to spherically bend monolithic IR detectors. Compared to state-of-the-art methods, a higher fill factor is obtained and the device fabrication process is not modified. We made an IR eye camera with a single lens and a curved IR bolometer. Images captured are well resolved and have good contrast, and the modulation transfer function shows better quality when comparing with planar systems.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.37.000653