Recently I have been trying to find out more about the process that is used to coat glasses lenses with gold. I asked about it in another forum last night and I was directed here. I initially thought that I could use the same process that NASA used to coat astronaut's helmet visors in gold, but now that is too expensive of a process. I want a thin transparent layer of gold on my glasses (lenses) basically. I have access to jewelry equipment.
Asked
Active
Viewed 261 times
2
-
I expect it is vapor deposition done in a good vacuum; Do you have that ? – blacksmith37 Jan 04 '18 at 16:52
-
I might be able to get access, but I am still looking for other methods. Like rolling out gold leaf even. I'm not sure if I could roll it thin enough but there must be a better way – gowekj sergfg Jan 04 '18 at 16:56
-
1There is almost no way to do this in your home, you'll never get gold leaf thin enough to see through. – Ron Beyer Jan 04 '18 at 18:08
-
Ok, good to know about gold leaf. – gowekj sergfg Jan 04 '18 at 18:50
-
Also I go to a school that has some equipment. I was going to try to use that, I don't have anything close at home anyway – gowekj sergfg Jan 04 '18 at 18:51
-
Probably easier to find some semitransparent gold-colored mylar sheet and cut to fit. – Carl Witthoft Jan 05 '18 at 14:58
-
That's not bad, and it's probably what sunglass manufacturers do I suspect. I might try that but for now I'm still looking into the real thing – gowekj sergfg Jan 05 '18 at 14:59
-
Electrochemical deposition might be able to get you a satisfactory coating, but you'd like needed repeated immersions and the chemistry would likely involve hazardous materials so proper safety equipment would become a requirement. – J. Ari Jan 05 '18 at 15:03
-
Do you think I'd need to coat the lenses in something first? Also what would I need for the process you describe? – gowekj sergfg Jan 05 '18 at 15:04
-
You mean electoplating right? – gowekj sergfg Jan 05 '18 at 15:24
1 Answers
1
You will have to use vapor deposition under high vacuum. This requires a piston vacuum pump to get a rough vacuum, then a turbomolecular or diffusion pump to get to high vacuum. Then heat gold in this vacuum till it melts. Gold vapor will deposit a thin layer on all surfaces of the container including your glasses.
glasslinger demonstrates vapor deposition with gold on youtube
While possible, it is not easy and it will probably cost less to get it done professionally by an optical coatings company than the gold you will waste in your attempts.
ericnutsch
- 8,305
- 1
- 16
- 32