On Sat, Jun 5, 2010 at 9:50 PM, PICdude <picdude3@narwani.org> wrote:
> We should have no problem making the plastic housings, with the
> patterns cut as windows, but we'd have to fill it with some type of
> diffused material. =A0I found LED encapsulation compounds, but I'm not
> clear on what specific parameters I should be looking for (for the
> encapsulation compound). =A0How and why should I choose different
> opacities, etc. =A0Do I have to completely fill the cavity, or just
> enough to cover the window. =A0Are deeper cavities better for more even
> light across the segment? =A0I'd prefer to have this info up front
> before contacting companies that sell this stuff.

I'm not sure this is directly applicable to your ideas, but I've used
hot melt glue before to diffuse some LEDs. It worked quite well,
though you might have to try a couple of different manufacturers until
you find one that clouds up just the right amount to diffuse nicely.
In my application it worked really well to give flush appearing
indicator lights that didn't look like standard LEDs.

Josh
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