Quote Originally Posted by mixedgas View Post
The software for holographic optics is getting better with the gratings and DOEs...Too bad the mass printing by pressing replicas is noisy on the cheap ones.. SEE:


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https://youtu.be/dPEaYT7b5fA
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Steve
Yeah, I've got one of these sitting here on my desk courtesy of a friend. I don't think its noisy compared to most plastic gratings I've seen. The rotating Earth effect is very cool.

-David