Design and characterization of thin multiple aperture infrared cameras

A. Portnoy; N. Pitsianis; X. Sun; D. Brady; R. Gibbons; A. Silver; R. Te Kolste; C. Chen; T. Dillon; D. Prather

doi:10.1364/AO.48.002115

Design and characterization of thin multiple aperture infrared cameras

A. Portnoy, N. Pitsianis, X. Sun, D. Brady, R. Gibbons, A. Silver, R. Te Kolste, C. Chen, T. Dillon, D. Prather

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

We describe a multiple-aperture long-wave infrared camera built on an uncooled microbolometer array with the objective of decreasing camera thickness. The 5 mm thick optical system is an f/1.2 design with a 6.15 mm effective focal length. An integrated image is formed from the subapertures using correlation- based registration and a least gradient reconstruction algorithm. We measure a 131 mK NETD. The system's spatial frequency is analyzed with 4bar targets. With proper calibration, our multichannel interpolation results recover contrast for targets at frequencies beyond the aliasing limit of the individual subimages.

Original language	English (US)
Pages (from-to)	2115-2126
Number of pages	12
Journal	Applied optics
Volume	48
Issue number	11
DOIs	https://doi.org/10.1364/AO.48.002115
State	Published - Apr 10 2009
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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10.1364/AO.48.002115

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T1 - Design and characterization of thin multiple aperture infrared cameras

AU - Portnoy, A.

AU - Pitsianis, N.

AU - Sun, X.

AU - Brady, D.

AU - Gibbons, R.

AU - Silver, A.

AU - Te Kolste, R.

AU - Chen, C.

AU - Dillon, T.

AU - Prather, D.

PY - 2009/4/10

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AB - We describe a multiple-aperture long-wave infrared camera built on an uncooled microbolometer array with the objective of decreasing camera thickness. The 5 mm thick optical system is an f/1.2 design with a 6.15 mm effective focal length. An integrated image is formed from the subapertures using correlation- based registration and a least gradient reconstruction algorithm. We measure a 131 mK NETD. The system's spatial frequency is analyzed with 4bar targets. With proper calibration, our multichannel interpolation results recover contrast for targets at frequencies beyond the aliasing limit of the individual subimages.

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Design and characterization of thin multiple aperture infrared cameras

Abstract

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