LED output help

[Bob Brogan]

I've looked at LED's and they're all rated in mcd. I need to find what
the power is in mw, not mcd.

How do I convert or measure that quantity? At the surface of the LED.

What mcd diode do I need to get 6mw of power @660nm?

TIA!
--
Thanks,
Ham

 

[Lord Garth]

"Bob Brogan" <Ham@think.not> wrote in message
news:Ham-DDA7F5.13045201022005@comcast.dca.giganews.com...

I've looked at LED's and they're all rated in mcd. I need to find what
the power is in mw, not mcd.

How do I convert or measure that quantity? At the surface of the LED.

What mcd diode do I need to get 6mw of power @660nm?

TIA!
--
Thanks,
Ham

This should help http://www.electro-optical.com/whitepapers/candela.htm