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Proceedings Paper

A New Type Of Infrared Scanning System
Author(s): Lars Karlsson
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Paper Abstract

The facet tracking principle for scanning polygons is described. A comparison using the optical invariant as a figure of merit shows that facet tracking systems are about four times as efficient as conventional scanning systems. The influence of different parameters such as polygon diameter and number of facets is discussed. It is possible to predict the final system performance by just considering the design parameters of the polygon. Finally, a new infrared scanner recently introduced on the market,the Thermovision 870, is described. Different design considerations are accounted for. The scanner is of the facet tracking type. It has built-in temperature references and uses a TE-cooled single element SPRITE detector as sensor. The optical system is essentially a mirror design with three aspheres. All mirrors are diamond turned and a special design goal has been to achieve close opto-mechanical integration.

Paper Details

Date Published: 28 September 1987
PDF: 5 pages
Proc. SPIE 0805, Optical Components and Systems, (28 September 1987); doi: 10.1117/12.941372
Show Author Affiliations
Lars Karlsson, AGEMA Infrared Systems AB (Sweden)

Published in SPIE Proceedings Vol. 0805:
Optical Components and Systems
Andre Masson, Editor(s)

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