Re: UV LED in development

"none none" <noen@xxxxxxxx> wrote in
news:45cf2278$0$24720$4c368faf@xxxxxxxxxxxxxx:

I'm building a cheap UV exposure frame using a gutted flat
scanner unit and putting in a UV setup so that UV light
will travel through the scanners glass and then hit the
board.. it would all be weighted down by a 2-5lb metal
weight attached to the top of the the top. Question i have
is will UV LED's be as effective as UV bulbs?



One thing to think about is the transmission of UV light through
the scanner glass. I'm not sure what type of glass is used, but
there is a sever loss at the shorter wavelengths in all glass.

http://www.edmundoptics.com/techSupport/DisplayArticle.cfm?
articleid=259

There is a chart on transmission vs. wavelength down the page.

Though I have heard, somewhere, that the glass used in some
copier beds has a relative high transmission rate.

Just something to consider.

Ken
.

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