Chuck Harris wrote:
White LED's are funny devices. As I understand things, they are actually
blue LED's with a phosphorescent component added to the plastic of the package.
The phosphor is what makes them radiate white. I have a suspicion that filing
them may damage the color. Old fashioned GaAs LED's dispersion can readily
be improved by filing the end of the lens.

Yes, you can't file the whole lens off, but you CAN rough it up with a bit
of sandpaper to create a diffusing surface. You don't want to take any more
material off than you have to.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

wide angle LEDs:

Check out:

http://ledsupply.com/

This is a white wide angle (70 degree) LED

http://ledsupply.com/l1-0-w5th70-1.php

Also of interest - is

http://ledsupply.com/l1-0-ww5th50-1.php

which is a warm white 50degree - VERY bright- and mimics incandescent
pretty well - esp. if you "throttle them back" (i. e. run them 10-15ma
istead of rated 20ma).

Of course - they still aren't "global" like true incandescents - but
with the low current drain - you can afford to use several for the same
power budget... and aim them along a path, etc.

best regards
--
randy guttery

A Tender Tale - a page dedicated to those Ships and Crews
so vital to the United States Silent Service:
http://tendertale.com