Sol-Gel composite AR coating for IR applications

Details Sol-Gel composite AR coating for IR applications Sol-Gel composite AR coating for IR applications

2007-03-02

2009-08-11

Speer, Timothy M (Department: 1794)

Stock material or miscellaneous articles

Composite

Of quartz or glass

C428S697000, C428S702000

Reexamination Certificate

active

07572512

ABSTRACT:
An infrared transmissive article includes an infrared transmissive substrate and a single layer anti-reflective (AR) composite broadband sol gel coating on a surface of the substrate. The AR coating includes a first chalcogenide including compound, and a second chalcogenide including compound intermixed with the first chalcogenide including compound. The percentages of the first chalcogenide and the second chalcogenide in the AR coating are selected to provide a refractive index of the AR coating that approximates the square root of a refractive index of the substrate.

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WO1998/045113 description.

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