rgbphil
Enlightened
Hi All,
I'm after a simple, free download for converting datasheet values of mcd to lumens for rough comparisons between LEDs in LED array design.
I know of an online one here:
led.linear1.org/lumen.wiz
and I've got the spreadsheet from here:
http://candlepowerforums.com/vb/showthread.php?t=118485
(Yep..I know a proper calculation needs to be integrated over the whole beam pattern, but I'm just doing relative comparisons...an estimate based on the 1/2 intensity beam angle would be OK)
All very good, but a little unwieldly. Does anyone know of a nice simple converter/guestimater, preferably something for the Palm series...but PC download would be OK.
Thanks
Phil
I'm after a simple, free download for converting datasheet values of mcd to lumens for rough comparisons between LEDs in LED array design.
I know of an online one here:
led.linear1.org/lumen.wiz
and I've got the spreadsheet from here:
http://candlepowerforums.com/vb/showthread.php?t=118485
(Yep..I know a proper calculation needs to be integrated over the whole beam pattern, but I'm just doing relative comparisons...an estimate based on the 1/2 intensity beam angle would be OK)
All very good, but a little unwieldly. Does anyone know of a nice simple converter/guestimater, preferably something for the Palm series...but PC download would be OK.
Thanks
Phil