I machined my own 7-segment display out of clear polycarbonate, each segment is about 1.5" long (it's a rather large display) and now it's time to add the LEDs. Turns out that the usual LEDs with the epoxy lens focus the light too tightly on one spot, so I get more of a dot rather than illuminate the whole segment. I want to know how to make the LED light up the entire segment as uniformly as possible, just how they do it on alarm clocks and everything else. I tried diffusing it with many things and nothing really works. Any ideas?