On 21/01/12 03:16, MIKE DURKIN wrote:
> How manny in the array? Power output and 405nm?
I'll have to have a look inside. They were ~400nm IIRC.
Friend said at the time the cheap ebay ones were not good and got some from a
wholesaler (2-3 years ago).
They were packed in a grid 10mm spacing approx, and run at 20mA each.
So just make an array to match the area you want, and the more you can fit in,
the better. LEDs have an advantage that the light is already somewhat collimated.