I need several thousand Custom Caps/Lenses

So, I would like to buy a few thousand custom lenses and or lense/cap combinations. I would them to project a pretty basic image. Does anyone know of a company that manufactures these in the USA (not willing to outsource to asia)

Or does anyone know of the equipment needed to make these, or insight into how these lenses are currently made.

being that my local gas station offers a keychain laser with 50 caps for $9.99, I would imagine that it is just a question of finding the appropriate supplier

They are called diffraction gratings. I've seen a couple around from the US, but you will get waaay more variety going through a Chinese dealer. Probably a whole lot cheaper too.

http://en.wikipedia.org/wiki/Diffraction_grating

It's been a long time since I don't see one of these keychain 5mW reds with lots of difraction gratings (they were most of them drawings and weird shapes) here in Spain. I would like to have some for my high powered lasers now lol.

well i need a custom defraction grating manufactured, with a custom logo.

I think Google will tell you more than we can.