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 journalArticlepeer-review

30 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 languageEnglish (US)
Pages (from-to)2115-2126
Number of pages12
JournalApplied optics
Volume48
Issue number11
DOIs
StatePublished - Apr 10 2009
Externally publishedYes

ASJC Scopus subject areas

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

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