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Proceedings Paper

Evaluation Of Thermal Imaging Optical Systems
Author(s): Jean Marc Brot
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Paper Abstract

Two levels of evaluation are implemented for the assessment of IR optical systems. The first level takes place during the fabrication process. It consists in interferometric measurements at a wavelength of 10 microns, for the control of the homogeneity of raw IR materials, and for the alignment of the whole lens system. It also consists in phase interferometry operated on each critical surface in the visible range for the prevision of the optical quality of the finished lens system. The second level consists in the conformance tests performed on the finished optical system. It includes measurements of such quantities as line spread function, optical transfer function, focal length, angular shift of optical axis and variation of transmission factor with temperature. Results on several lenses are presented.

Paper Details

Date Published: 1 May 1986
PDF: 5 pages
Proc. SPIE 0590, Infrared Technology and Applications, (1 May 1986); doi: 10.1117/12.951978
Show Author Affiliations
Jean Marc Brot, Cilas Alcatel (France)

Published in SPIE Proceedings Vol. 0590:
Infrared Technology and Applications
Lionel R. Baker; Andre Masson, Editor(s)

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