1 December 2006 High performance long-wave infrared sensor with large zoom optics and high-definition television format
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Optical Engineering, 45(12), 123201 (2006). doi:10.1117/1.2403842
Abstract
A high-performance long-wave IR zoom sensor capable of 20× magnification using a 480×6 linear detector has been developed. The system magnification can be continuously adjusted by simply moving two lens groups, which also provides the means of athermalization of the images. The sensor image can be displayed in the 16 : 9-aspect-ratio high-definition TV format, which allows longer detection and recognition range than normal 4 : 3 TV format images without any loss of field of view. In order to correct the nonuniformity of the detector arrays, the two-point correction method has been applied using a thermoelectric cooler. Additionally, a new histogram processing technique suitable for characterization of the contrast distribution of thermal imagery has been proposed to enhance the image contrast and improve the detection capability.
Seok-Min Hong, Hyun Sook Kim, Wee Kyung Yu, Chang Woo Kim, "High performance long-wave infrared sensor with large zoom optics and high-definition television format," Optical Engineering 45(12), 123201 (1 December 2006). http://dx.doi.org/10.1117/1.2403842
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KEYWORDS
Sensors

Zoom lenses

Thermography

Infrared sensors

Image processing

Signal processing

Long wavelength infrared

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