Antireflection coating, optical element, and optical...

Details Antireflection coating, optical element, and optical... Antireflection coating, optical element, and optical...

2006-01-13

2009-10-06

Pritchett, Joshua L (Department: 2872)

Optical: systems and elements

Light interference

Produced by coating or lamina

C359S581000, C359S589000

Reexamination Certificate

active

07599119

ABSTRACT:
An antireflection coating provided on an optical element which passes through at least two wavelengths of light in the wavelength range of 1300-1600 nm, wherein the antireflection coating comprises: a high refractive index layer; a low refractive index layer having a refractive index lower than a refractive index of the high refractive index layer; and a supplementary layer having a composition different from a composition of the high refractive index layer or from a composition of the low refractive index layer, and being provided adjacent to the high refractive index layer or to the low refractive index layer.

REFERENCES:
patent: 4568140 (1986-02-01), van der Werf et al.
patent: 5930046 (1999-07-01), Solberg et al.
patent: 2007/0030569 (2007-02-01), Lu et al.
patent: 2000-180671 (2000-06-01), None
patent: 2003-344715 (2003-12-01), None
patent: 2004-037928 (2004-02-01), None

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