> >> >> There are 365nm LEDs, they are not cheap but the longer the wavelength you >> get from 365 the cheaper they get. >> http://www.mouser.com/search/refine.aspx?Ntk=P_MarCom&Ntt=161382735 > > That's WAY more power than I need!!! > > I connected one of the flashlights to my bench power supply and ran it in > constant current mode. Even just 20 mA to all 9 LEDs is FAR more light than > I need. It "recharges" the florescent material in under a second, from a few > feet away, even at that low power. > > It seems similar flashlights claiming to be "true 365nm" are about $25 to > $30. Maybe those would be better than the $8 ones I've got? > > I found a number of UV filters meant for special photography, in the $50 to > $150 range. >
It might be worth a try, there are also lots of raw LEDs on ebay too: ttp://www.ebay.com/sch/i.html?_from=R40&_trksid=p2060778.m570.l1313.TR11.TRC1.A0.H0.X365nm+led&_nkw=365nm+led&_sacat=0 A filter is still not going to get you anywhere, the spectral width on many of these leds is about 10nm so there is nothing to filter. The filters are intended of remove visible light for UV sensitive CCDs or film cameras. One other thing to remember is that at this wavelength most plastics and glasses are rather opaque and will attenuate the light quite a bit. -Jerry > > _______________________________________________ > dorkbotpdx-blabber mailing list > [email protected] > http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber _______________________________________________ dorkbotpdx-blabber mailing list [email protected] http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber
