Title | Design and characterization of thin multiple aperture infrared cameras. |
Publication Type | Journal Article |
Year of Publication | 2009 |
Authors | A Portnoy, N Pitsianis, X Sun, D Brady, R Gibbons, A Silver, Te R Kolste, C Chen, T Dillon, and D Prather |
Journal | Applied Optics |
Volume | 48 |
Issue | 11 |
Start Page | 2115 |
Pagination | 2115 - 2126 |
Date Published | 04/2009 |
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 4 bar targets. With proper calibration, our multichannel interpolation results recover contrast for targets at frequencies beyond the aliasing limit of the individual subimages. |
DOI | 10.1364/ao.48.002115 |
Short Title | Applied Optics |