Hi Sung,
I'm not exactly sure what we are looking at with these plots, but it's clear that you need to characterize the sensor response in order to understand the situation. Did you perform the cosine sensitivity experiment I suggested? You could mask off a portion of the center of a tube if you don't have a small UV source, and see how the sensor responds as a function of incident angle at a fixed distance.
-Greg
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From: Minki Sung <[email protected]>
Date: April 5, 2009 7:46:34 AM EDTDear Greg,
I have done some additional measurements and the results show as follow.
http://iga.iis.u-tokyo.ac.jp/tmp/test01.gif Setup
http://iga.iis.u-tokyo.ac.jp/tmp/test02.gif Fluorescent lamp (Measurement)
http://iga.iis.u-tokyo.ac.jp/tmp/test03.gif Simulation
http://iga.iis.u-tokyo.ac.jp/tmp/test04.gif UV lamp (Measurement)The results indicate the UV lamp has different diffuse characteristics compared with common fluorescent lamps if the UVC sensor is cosine corrected well as written in the sensor. If there is no problem with UVC sensor, it might be not easy to model UV lamp with RADIANCE.
Best Regards,
Sung
