[werk_ag]

Hi,


It seems that UV is diffused by the atmosphere more than visble light, so the correct "Cosine Response" is more important. If the sensor itself has a good Cosine Response, then beware that any "window" above it may severely upset the shape, due to high surface reflection at low angles. A good demonstation of this is the "Harry Worth Shop Window" scene:

Hi Alan

Thanks for the excellent pdf document, it contains very useful information.

Despite I'm not getting too bad results, the "Cosine Response" is one of the aspects with which I am not fully satisfied in any of my practical implementations of the UV sensor.
Next approaches, probably will be with a Teflon dome. Unfortunately they are not easy to find.