A New Type Of Infrared Scanning System

Lars Karlsson

doi:10.1117/12.941372

28 September 1987 A New Type Of Infrared Scanning System

Lars Karlsson

Proceedings Volume 0805, Optical Components and Systems; (1987) https://doi.org/10.1117/12.941372
Event: Fourth International Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, The Hague, Netherlands

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.

Citation Download Citation

Lars Karlsson "A New Type Of Infrared Scanning System", Proc. SPIE 0805, Optical Components and Systems, (28 September 1987); https://doi.org/10.1117/12.941372

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