On 10/11/2014 12:02 AM, Jerry Biehler wrote:
Bad, bad, bad idea. Those lamps are wide spectrum Mercury lamps. You
would need a filter anyway.
Yes, I agree. I definitely don't want to get into UV-B or UV-C ranges
that can burn.
Just use the right wavelength. 365nm is invisible to the eye and eye
safe. My 355nm laser is almost completely invisible, only when it
strike a target and it fluoresces do you see it.
This is the cheap one I have now. It has a lot of visible blue output.
http://www.amazon.com/gp/product/B004S6JFWQ
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.
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