Nonreflective coating

Details Nonreflective coating Nonreflective coating

1980-01-02

1982-02-02

Lee, John D.

Stock material or miscellaneous articles

Composite

Of bituminous or tarry residue

428332, G02B 110

Patent

active

043136478

ABSTRACT:
A nonreflective coating is made up of five or seven layers of optical films provided on an optical element, such as a lens, whose refractive index is in a certain refractive index range for a particular light wavelength. The layers are formed of two materials different in refractive index so that the odd layers have one of the two refractive indexes while the even layers have the other refractive index, and the thicknesses of the layers are suitably defined as functions of the light wavelength.

REFERENCES:
patent: 3185020 (1965-05-01), Thelen
patent: 3799653 (1974-03-01), Ikeda
patent: 3829197 (1974-08-01), Thelen
patent: 3858965 (1975-01-01), Sumita
patent: 3922068 (1975-11-01), Uetsuki

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