A high performance athermalised dual field of view I.R. telescope

Details A high performance athermalised dual field of view I.R. telescope A high performance athermalised dual field of view I.R. telescope

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1013...92p&link_type=abstract

IN: Optical design methods, applications, and large optics; Proceedings of the Meeting, Hamburg, Federal Republic of Germany, Se

Physics

Optics

Airborne Equipment, Field Of View, Infrared Telescopes, Design Analysis, Equipment Specifications, Military Technology, Weight Reduction

Scientific paper

The operational requirements and design of a 400-mm-long 200-mm-pupil dual-FOV telescope for military airborne surveillance and target recognition at 8-14 microns are described. A two-position zoom configuration with two zoom groups is employed to achieve magnification change, as proposed by Roberts (1984). An 'electronic cam' positioning system is employed, with an integrated thermal-correction capability. Details of the temperature-sensing system, the athermalization computation, and the dual servo design are given, and extensive drawings and diagrams are provided.

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