Modding Even lighting of acrylic with LED

I'm planning on making a "case badge" by using a custom cut design on aluminum - and on the back sticking a sheet of acrylic. Now I need to figure out how to light the acylic sheet evenly.

I was thinking to frost the front face of the acrylic (the face thats right behind the aluminum - and shine the LEDS directly onto the acrylic perpendicularly- but will it light evenly? Or will you see spots of light from the led despite the frosted acrylic?

Another idea is to embed the leds on the edges of the acylic and shine it into the acrylic parallel. Not sure if that will work better. Idea is from Jani's lighted mousepads http://www.metku.net/index.html?sect=view&n=1&path=mods/glowpad/index_eng

 

Embed the leds to the edge and sand down the surface on both sides.

 

Stalker!

 

I believe most light comes out the top of the LED so utilise that, but doing it from directly behind wont give even, side is much better i think.

-cLoWn

 

One thing you may want ot try, is frosting the LEd itself, and the acrylic you want to use, I did the same thing (the frosting) for some leds I used to light up my front grill, I simply sprayed them with a couple coats of testors "Dullcote" which crazes the plastic lense, and helps disperse the light, light a regualr frosted light bulb.

Not sure if that is going to give you the exact effect you where after, but it may help.