That is 800nm vs 10000nm. (ish) On Nov 4, 2015 4:00 AM, wrote: > > Hi Art, > > I've been waiting for someone who knows more about this sort of thing t= o > > answer but I'll add my 2cents worth. > > > > Fluorescent lights do run warm, so you can expect some output. The > tubular > > types have heaters in them to get them started so this could be expecte= d > to > > show up as well. CFLs start using a high voltage so they could be less > of a > > problem. The glass itself should attenuate the IR somewhat, but I don't > know > > how much. OTOH, as it warms up, I'd expect it to emit some long > wavelength > > IR itself. > > > > Mostly guesswork though > > I have had problems with my TV IR remote when turning on CFL bulbs in the > same room. Until the bulbs warm up and reach full output brightness it > seems they emit a large amount of IR right in the band used for 'normal' = IR > diodes. This floods the receiver with IR light and operation stops until > the CFL has warmed up. > > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .