On Sep 13, 2005, at 2:02 PM, Herb Chong wrote:
moreover, a good 5mm white LED is able to deliver over 2Cd. narrow
angle ones in IC packages are capable of 12 Cd. no millis involved.
arrays designed specifically for lighting purposes can be higher,
and you can buy them preassembled. look for the Princeton Tec
Impact XL for what the commercial state of the art LED flashlight
can do. there are brighter ones.
Take a look at Luxeon (www.luxeon.com).
They claim up to 120 lumens from a 5W device, although the 3W
versions are better value. High-tech mountain biking headlamps
typically use a couple of 3W LEDs and they throw out a serious amount
of light.
Cheers,
- Dave
