1980-05-21
1982-09-14
Corbin, John K.
350464, 350476, G02B 102, G02B 922
Patent
active
043492495
ABSTRACT:
The disclosure relates to at least one calcium fluoride optical element used in combination with at least two ordinary crown glass lens elements to greatly reduce secondary spectrum in optical systems.
REFERENCES:
patent: 2363770 (1944-11-01), Bennett
patent: 2455808 (1948-12-01), Reiss
patent: 2487873 (1949-11-01), Herzberger et al.
Nefedov, "The Design of Apochromats Made from Two or Three Different Glasses", Optical Technology, vol. 40, No. 1, 1/73-pp. 46-57.
Brixner, "Faster LASL Lens Design Program", LA-UR-73-286; Applied Optics, vol. 12, No. 11, 11/73-pp. 2703-2708.
Baker, "Planetary Telescopes", Applied Optics, vol. 2, No. 2, 2/63-pp. 111-129.
Brixner Berlyn B.
Klein Morris M.
Winkler Max A.
Besha Richard G.
Corbin John K.
Gaetjens Paul D.
Gass Rebecca D.
The United States of America as represented by the United States
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