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Proceedings Paper

Zoom athermal telescope having 18.5 magnification range for 8 to 12-u range FLIR systems
Author(s): Mark S. Shechterman
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Paper Abstract

This paper describes the specific design considerations and performance evaluation for ELOP's MLZFS (modular lightweight zoom FLIR system) utilizing a new athermal wide magnification range IR zoom telescope. The following aspects of the development work are discussed in this paper: MTF and MRT characteristics of the FLIR for different temperatures; comparison with existing zoom systems and with systems of discrete magnification change; calculation of lens group positions as a function of magnification and temperature, including interpolation analyses of these dependencies; implemented methods for narcissus effect reduction at the lowest magnification mode, including development of a new AR coating; critical tolerance analyses; mechanical and electro-mechanical design, answering high accuracy requirements; adjustment and calibration of the zoom system by use of an IR interferometer.

Paper Details

Date Published: 5 October 1995
PDF: 10 pages
Proc. SPIE 2539, Zoom Lenses, (5 October 1995); doi: 10.1117/12.222844
Show Author Affiliations
Mark S. Shechterman, ElOp Electrooptics Industries Ltd. (Israel)

Published in SPIE Proceedings Vol. 2539:
Zoom Lenses
Allen Mann, Editor(s)

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