First surface mirror with chromium nitride layer

Details First surface mirror with chromium nitride layer First surface mirror with chromium nitride layer

2007-08-23

2009-11-24

Pritchett, Joshua L (Department: 2872)

Optical: systems and elements

Mirror

With support

Reexamination Certificate

active

07621648

ABSTRACT:
A mirror (e.g., first surface mirror) is provided with a layer of or including chromium nitride (CrNx). In certain example embodiments, the CrNxlayer may be the primary reflective layer of the mirror. Surprisingly and unexpectedly, it has been found the addition of nitrogen to the chromium to form CrNxreduces pinhole formations in the resulting layer. In certain example embodiments, the more nitrogen which is introduced into the layer, the smaller the number and/or size of pinholes in the Cr inclusive layer. In certain example embodiments, it has also been found that the addition of nitrogen to Cr may improve durability.

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