Re: Convert UV-excluded to UV-included
Re: Convert UV-excluded to UV-included
- Subject: Re: Convert UV-excluded to UV-included
- From: Mike Strickler <email@hidden>
- Date: Tue, 22 Dec 2009 11:40:19 -0800
Any formula you used would be specific to the illuminant and (if
applicable) the reflecting medium. Change illuminants (for example,
going from a spectro with a halogen bulb to one with an UV-included
LED source) and/or papers and your numbers won't be valid. You'll
also find that UV-filtered readings won't match readings taken with a
spectro, like the iSis, that uses for its "filtered" LEDs that have
no (or nearly no) UV component to begin with. The conventional cutoff
filters take out a bit of the visual spectrum as well, so they result
in a more "yellowish" reading in comparison with the unfiltered
reading--how different will depend on how much UV fluorescence there
is in the paper being measured.
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Message: 2
Date: Mon, 21 Dec 2009 16:03:18 -0500
From: "Chris McFarling" <email@hidden>
Subject: Convert UV-excluded to UV-included
To: <email@hidden>
Message-ID: <4A752153D4F94EB5BE5AEDAB9A57D263@helo>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
I'm wondering if there is formula that exists to convert
measurements from a
UV filtered spectro into data that would simulate that of a non-
filtered
device?
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