Optical article
An optical article and method of making the same are provided. The optical article has optical multi-aperture operation. The optical article has one or more electrically conductive and selectively passivated patterns.
1. A method comprising:
a) providing a first layer of material having a capability of multiple wavelength band radiation transmission, the first layer material is chosen from zinc sulfide, water clear zinc sulfide and zinc selenide;
b) depositing an electrically conductive and selectively passivated pattern on the first layer of material having the capability of multiple wavelength band radiation transmission, the electrically conductive and selectively passivated pattern comprises one or more metal or metal alloy layers;
c) activating the electrically conductive and selectively passivated pattern and the first layer of material with hydrogen sulfide; and
d) depositing a second layer of material having a capability of multiple wavelength band radiation transmission on the electrically conductive and selectively passivated pattern opposite the first layer to form an article having optical multi-aperture operation, the second layer of material is chosen from zinc sulfide, water clear zinc sulfide and zinc selenide.
2. The method of claim 1 , wherein the one or more metal or metal alloy layers is deposited on the pattern by CVD, PVD, CCVD, CACCVD, electroless, immersion or electrolytic deposition.
3. The method of claim 1 , wherein the metal or metal alloy layers have a sheet resistivity of 10 ohms/square or less.
4. The method of claim 1 , wherein the metal is chosen from noble metals and non-noble metals.
5. The method of claim 4 , wherein the noble metals are chosen from gold, palladium and platinum.
6. The method of claim 4 , wherein the non-noble metals are chosen from copper, cobalt, chromium, tantalum, beryllium, nickel, molybdenum, tungsten, rhodium, iridium, ruthenium, titanium and tin.
7. The method of claim 1 , wherein the article having optical multi-aperture operation has 30% transmission of radiation of at least one wavelength.
8. The method of claim 7 , wherein the transmission is 60% to 90% in the 3-5 micron range.
9. The method of claim 7 , wherein the transmission is 45% to 90% in the 1.06 micron range.