Computer Science – Performance
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ijimw..29..261j&link_type=abstract
International Journal of Infrared and Millimeter Waves, Volume 29, Issue 3, pp.261-271
Computer Science
Performance
Ir, Imaging, Spatial Filter, Opto-Mechanical, Uncooled
Scientific paper
This paper presents an optical readout method based uncooled infrared imaging system that contains an optical read-out section and a bi-material micro-cantilever arrays (BMCA) detector. The optical read-out section is based on incoherent light spatial filter technique. The read-out section converts the deflection angles of BMCA caused by absorption of infrared (IR) radiation to a visible image through optical filtering operation of the BMCA with a knife-edge filter. A spatial mathematical model is presented to describe the read-out method and its validity is proved. The IR image of a person’s hand obtained through the using of the 100 × 100 BMCA and the 12-bit A/D quantizer demonstrates the ability of the system to create image. The performance test shows that the average Noise-equivalent temperature difference (NETD) of the imaging system can arrive at about 183mK with some areas having a NETD as low as 78mK.
Chen Dapeng
Dong Fengliang
Dong Lijun
Guo Zheying
Jiao Binbin
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