Infra-red filter

Details Infra-red filter Infra-red filter

1979-08-13

1982-03-30

Lee, John D.

350164, 350311, G02B 528

Patent

active

043221254

ABSTRACT:
An infra-red filter substrate surface is profiled to form an undulating pattern whose dimensions correspond to the operating wavelength. This prevents spurious reflections when the filter is subsequently provided with a protective coating.

REFERENCES:
patent: 3758193 (1973-09-01), Tung
patent: 4004851 (1977-01-01), Negishi et al.
patent: 4114978 (1978-09-01), Bostick et al.
patent: 4114983 (1978-09-01), Maffitt et al.
patent: 4190321 (1980-02-01), Dorer et al.
Thornton, "Limit Of The Moth's Eye Principle And. . . ", J.O.S.A., vol. 65, No. 3, Mar. 1975, pp. 267-270.
Lussier, "Guide To IR-Transmissive Materials", Laser Focus, vol. 12, No. 12, Dec. 1976, pp. 47-50.

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