Share Email Print
cover

Proceedings Paper

Thermoelectrically-Cooled Infrared Imagers
Author(s): Wayne Grant
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The attractions of using thermoelectric (TE) coolers in IR imagers, as compared to cooling with either a Joule-Thomson cryostat or mechanical tyre refrigerator, are their relative light weight, low life cycle costs, and excellent reliability. The vitality of TE technology derives from a coincident maturation in three "sub-technologies": TF coolers, Intermediate-Temperature-Operation (ITO) detectors, and integrated focal plane electronics. TE coolers are available which provide 3n-50 milliwatts cooling nower at 195 V using less than 3 watts of input power. Small-geometry detectors sensitive to 3-5 micron radiation are thermal noise limited when operated above 170 K but still exhibit respectable detectivities of near 1. 0x1011cm-Hz 1/2 /W at 193 K. Large detector arrays with integrated focal plane signal processing are now being developed which will improve system sensitivity beyond that of our first-generation devices. This paper briefly reviews the status of TE coolers, ITO detectors, and focal plane electronics, and presents the problems and trends in TE technology.

Paper Details

Date Published: 6 June 1978
PDF: 7 pages
Proc. SPIE 0132, Utilization of Infrared Detectors, (6 June 1978); doi: 10.1117/12.956065
Show Author Affiliations
Wayne Grant, Night Vision and Electro-Optics Laboratories (United States)


Published in SPIE Proceedings Vol. 0132:
Utilization of Infrared Detectors
Irving J. Spiro, Editor(s)

© SPIE. Terms of Use
Back to Top