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Proceedings Paper

Control of optical aberrations with coded apertures
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Paper Abstract

We report the design of binary-amplitude masks that in conjunction with digital restoration enable mitigation of optical aberrations. Essentially, the design process aims to maintain high modulation-transfer functions by reducing destructive interference of optical-transfer-function phasors. Two optimization techniques are described: so-called contour masks and the use of multiple pixelated masks. In general the resultant modulation-transfer function is 20% of a diffractionlimited imaging system and due to the absence of nulls recorded images can be restored to a high-contrast diffractionlimited image. Example applications are presented for correcting ocular aberrations and for conformal imaging.

Paper Details

Date Published: 8 September 2011
PDF: 8 pages
Proc. SPIE 8165, Unconventional Imaging, Wavefront Sensing, and Adaptive Coded Aperture Imaging and Non-Imaging Sensor Systems, 816517 (8 September 2011); doi: 10.1117/12.894975
Show Author Affiliations
Andrew R. Harvey, Heriot-Watt Univ. (United Kingdom)
Gonzalo D. Muyo, Heriot-Watt Univ. (United Kingdom)
Tom Vettenburg, Heriot-Watt Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 8165:
Unconventional Imaging, Wavefront Sensing, and Adaptive Coded Aperture Imaging and Non-Imaging Sensor Systems
Stanley Rogers; Jean J. Dolne; David P. Casasent; Thomas J. Karr; Victor L. Gamiz, Editor(s)

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