24 June 2014 Experimental tomographic scanning (TOSCA) imagers
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Abstract
The tomographic scanner (TOSCA) detects signals using line detectors scanning a scene at regularly distributed angles. These line scan signals are then processed to reconstruct 2-dimensional images. In the simplest form, a 1-axis rotating conical scan optics scans across a simple patterned reticle, the signal collection being done with a single pixel detector. Experimental mono- and multispectral cameras using this approach are demonstrated under varying illumination conditions. Of particular interest is the TOSCA system’s ability to handle and compensate for light sources modulated with a frequency higher than that of the frame rate. We also demonstrate for the first time a TOSCA imager operating in the infrared region. The device is put together using 3D-printed key parts and low cost optical components, leading to a very economical infrared camera.
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H. Hovland, "Experimental tomographic scanning (TOSCA) imagers", Proc. SPIE 9070, Infrared Technology and Applications XL, 90700H (24 June 2014); doi: 10.1117/12.2050971; https://doi.org/10.1117/12.2050971
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