Articles having improved reflectance suppression

Details Articles having improved reflectance suppression Articles having improved reflectance suppression

1983-11-16

1986-03-25

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

126417, 126901, 350164, 350166, 350 16, 428432, 4289122, 244158A, G02B 110, H01L 3104, B64G 100

Patent

active

045785279

ABSTRACT:
Article having improved reflectance suppression comprising a substrate formed of a material having a reststrahlen band and having at least one surface and a coating carried by said one surface. The coating comprises at least one period with each period consisting of a spacer layer and an absorber layer. The spacer layer is formed of a material having a low index of refraction and has an optical thickness ranging from approximately one quarter of a wavelength and less. The spacer layer also has low absorption in the visible region of the spectrum. The absorber layer is formed of a material which has substantial absorption near the reststrahlen band. The absorber layer has a complex index of refraction as a function of wavelength which is relatively close to the index of refraction of the substrate.

REFERENCES:
patent: 3427089 (1969-02-01), Webb
patent: 3671286 (1972-06-01), Fischell
patent: 3958042 (1976-05-01), Katsube et al.
patent: 4260222 (1981-04-01), Kozawa
patent: 4293732 (1981-10-01), Rancourt et al.

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