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I want to ask a question about how light from an LED can be (and is often) diffused evenly across a surface, for example, as in back-lit LCD displays, or lit-up (shaped) panels of electrical appliances and so on. I want to know what materials, structures and design techniques (or generally, what solutions) are used to solve these kinds of problems. Would this be an acceptable question for physics.stackexchange.com?

Thanks

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My view is no, as this is more of an engineering question than a physics question.

Now, if you found out that material X somehow diffused the light and you wanted to ask why material X diffused the light, that would be on topic.

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  • $\begingroup$ Yep, I fully agree with this. $\endgroup$ – David Z Jul 1 '13 at 20:08

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