Binary lenses for use at 10.6 micrometers

Details Binary lenses for use at 10.6 micrometers Binary lenses for use at 10.6 micrometers

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985opten..24..791s&link_type=abstract

Optical Engineering (ISSN 0091-3286), vol. 24, Sept.-Oct. 1985, p. 791-795. DARPA-sponsored research.

Physics

25

Holography, Infrared Telescopes, Interference Grating, Lenses, Wave Diffraction, Lens Design, Lithography, Wave Fronts

Scientific paper

Highly efficient binary gratings and binary lenses for use at 10.6 microns have been produced by combining advances in lithography and electromagnetic grating theory. For 25-cm and 5-cm focal length elements, diffraction efficiencies (first-order intensity/incident intensity) of 94.1 and 96.4 percent, respectively, have been measured. A simple afocal telescope with a 2-in. entrance aperture and a magnification of 5, constructed from two binary lenses, is briefly described, and results of an imaging test are reported.

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