Hi, I’m using FTIR setup and i can buy this leds
5mm + 940nm + 60º + 60 mW/Sr
VDC = 1,5V - 1,6 V ; Vmax = 2,1V
Thanks from Argentina,Mar del Plata.
Carlos Allevato, Flickr, Blog
I´ve tested this leds and 5mm + 850nm + 30º + 50 mW/Sr and the 850nm work a lot better.
850nm is more easily picked up by normal webcams than 940 or higher nm. A problem might be that these leds are a bit dim (only 50 mw/sr). For example the sfh485 has a brightness of 160mw/sr.