Computer Science – Performance
Scientific paper
Aug 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976opten..15..364a&link_type=abstract
Optical Engineering, vol. 15, July-Aug. 1976, p. 364-367.
Computer Science
Performance
1
Infrared Detectors, Infrared Imagery, Near Infrared Radiation, Night Vision, Telescopes, Apertures, Cadmium Tellurides, Focal Plane Devices, Lens Design, Linear Arrays, Mercury Tellurides
Scientific paper
Optical design of a large-aperture telescope for near IR imaging onto a linear array of detectors (HgCdTe devices) is described in a partially declassified report. The usual trade-offs between good image quality, flatness of focal planes, and wide viewfields are overcome in an optimum design, with added benefit of excellent off-axis energy rejection. Capabilities of full earth viewing, uniform image quality over the field of view, and operation in close angular proximity to large signal sources are claimed, but data referable to absolute performance characteristics are withheld. The ring field IR telescope is described briefly, and mention is made of a projection mask aligner system and lightweight (Be) mirror substrates rendering the system weight-competitive with lower-performance systems. The out-of-field energy rejection feature mitigates problems with swamping by solar radiation.
Altenhof R. R.
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