A Television Compatible Portable IR-CCD Camera System

Harry G. Erhardt; Joseph V. Groppe

doi:10.1117/12.944657

8 November 1984 A Television Compatible Portable IR-CCD Camera System

Harry G. Erhardt, Joseph V. Groppe

Proceedings Volume 0501, State-of-the-Art Imaging Arrays and Their Applications; (1984) https://doi.org/10.1117/12.944657
Event: 28th Annual Technical Symposium, 1984, San Diego, United States

Abstract

The design and performance of a standard television compatible, portable infrared charge-coupled device camera system is described. The sensor utilized is a 64 x 128 element Schottky barrier IR-CCD focal plane array cooled to cryogenic temperatures (77°K). The camera electronics generates the CCD clock waveforms necessary to drive the imager and contains all the video processing circuitry required to produce high quality IR imagery. The main feature of the video processing circuitry is a single-field subtraction circuit, using a field store with 8-bits of resolution, which suppresses fixed pattern noise (FPN), improves signal to noise (S/N), and decreases the minimum resolvable temperature. The RS-170 video signal output format enables direct interface to any standard video recording, processing or analysis equipment. A liquid nitrogen (dewar) cooling system and 12 volt D.C. power requirement permit portable applications of the system. Unlike scanning thermal imaging systems currently available, this prototype design is the first to incorporate a staring infrared focal plane array suitable for commercial applications. This camera demonstrates the high performance, design efficiency, and cost-effectiveness of a monolithic silicon Schottky barrier area sensor approach in an industrial infrared imaging system.

Citation Download Citation

Harry G. Erhardt and Joseph V. Groppe "A Television Compatible Portable IR-CCD Camera System", Proc. SPIE 0501, State-of-the-Art Imaging Arrays and Their Applications, (8 November 1984); https://doi.org/10.1117/12.944657

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