We describe a multiple-aperture long-wave infrared camera built on an uncooled microbolometer array with the objective of decreasing camera thickness. The $5\mathrm{mm}$ thick optical system is an $f/1.2$ design with a $6.15\mathrm{mm}$ effective focal length. An integrated image is formed from the subapertures using correlation-based registration and a least gradient reconstruction algorithm. We measure a $131\mathrm{mK}$ NETD. The system’s spatial frequency is analyzed with $4\text{\hspace{0.17em} bar}$ targets. With proper calibration, our multichannel interpolation results recover contrast for targets at frequencies beyond the aliasing limit of the individual subimages.

© 2009 Optical Society of America

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