- A. Portnoy and N. Pitsianis and X. Sun and D. Brady and R. Gibbons and A. Silver and R. T. Kolste and C. Chen and T. Dillon and D. Prather, Design and characterization of thin multiple aperture infrared cameras,
Applied Optics, vol. 48 no. 11
pp. 2115 -- 2126 .
(last updated on 2009/12/22)
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 14 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 4 bar targets. With proper calibration, our multichannel interpolation results recover contrast for targets at frequencies beyond the aliasing limit of the individual subimages. (C) 2009 Optical Society of America