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Cheap light diffusing material needed - ideas/suggestions?

Started Jul 12, 2018 | Discussions thread
ProfHankD
ProfHankD Veteran Member • Posts: 9,147
Re: Cheap light diffusing material needed - ideas/suggestions?
1

WuWuZilla wrote:

Hello all,

first off, I'm sorry if I don't use the proper technical/English terms in my descriptions.
If you have questions regarding certain terms, just ask.

To the topic:
For a DIY project, I need a cheap light diffusing material. The setup is several lines of RGB LED strips next to each other. To avoid that the light of each single LED is seen in the lit area, I'd like to diffuse the LEDs light so that it appears to be (more or less) a single uniform light source. So, I'd be looking for a good light diffusing material, e.g. a film/foil or similar. It should be lightweight, flexible (bendable), and cheap. The diffusion material needs to cover an approximately 10x50cm (4"x20") field of LEDs.

Any ideas or suggestions on what material this could be? Either directly available in a store or easily producible by myself. Thanks in advance!

I used to use large-format (E) plastic printer "paper" as a rear-projection screen -- it gives no hotspot whatsoever, which means it's a great diffuser material. I've also found some high-end art papers to be pretty good as diffusers, but they tend to give slight hotspots (and let a lot more light through).

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