sunglasses with writing or prints on the lenses
This is a proprietary technique that no manufacturer will tell me about. They are afraid I will give their secrets away on a public forum. I can only say that it's a filter that is quite similar to mirror coating. In regards to a security solution I thinks that's a great idea. I am sorry I wasn't able to tell you more about how it's done.
Sorry I couldn't help more.
- Posts: 1316
- Joined: Wed Feb 10, 2010 1:40 pm