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US 2006/0216470 A1Published application
Moisture barrier coatings for infrared salt optics
AssigneeLockheed Martin Corporation
InventorsJames Johnson, David Burton, Kevin Flanagan
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Abstract
The present invention is directed to a salt optic provided with a multilayer coating in order to improve upon the moisture resistance of a salt optic, when compared to the moisture resistance of an uncoated salt optic. In one aspect, the present invention is comprised of a coated salt optic having at least a first coating layer and a second coating layer, the first coating layer being surface-smoothing layer and adhesion layer, and the second coating layer being a moisture barrier layer.
Claims9
A moisture resistant salt optic exhibiting transmissance of energy in the infrared range, comprised of:
- (a) a salt optic coated with a first adhesion layer;
- and
- (b) a second barrier layer.
Dependencies are inferred from the claim text.