[alt-photo] Re: LED exposure lights

Nelson Mark ender100 at aol.com
Fri Mar 11 20:43:46 GMT 2011


Good question and I think there is some discussion on this in the archives, but mostly speculation.  I have done some web searches and there are LED lights for UV that are very narrow in spectrum range and tuned to very specific UV values.  They are still expensive, but that may change in the future.  I'm not sure that they put out enough light though.  Some day I'd like to get a bulb and test it.

Best Wishes,
Mark Nelson

PDNPrint Forum @ Yahoo Groups


On Mar 11, 2011, at 2:17 PM, Harry B Houchins wrote:

> I had an interesting, brief conversation with an engineer from a local lighting manufacturer yesterday at a Home & Garden Show. He told me they could produce LED lamps in the 350 to 450 nm range.
> With an LEDs ability to produce light at less cost and with less heat, it would seem to be ideal for our exposure needs. Has anyone had any experience with this light source for exposing carbon or gum images?
> Regards,
> Harry B Houchins
> Eugene, Oregon
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