Hello! Longtime lurker, first time poster.
I was taking apart a beer sign that I had, which was edge-lit by LEDs. I found the diffusion pattern inside quite interesting, so I thought I’d share my discovery, in case it helps anyone.
Essentially the whole thing is a plastic sandwich with the following ingredients (front to back):
- Protective acrylic
- Printed transparency
- Dimpled edge-lit acrylic to diffuse light
- White sheet to reflect light forward
- Black sheet to prevent light from spilling out the back
Here’s the bottom three layers:
Here it is lit:
…and here’s a closeup:
Most of the awesome edge-lit projects I’ve seen so far have been purely acrylic and not mixed-media (if this counts as that). Hopefully, this helps someone with a project.