I vote for absorbed in both cases. It seems the amount of heat buildup
would be minimal unless left pointing at a UV source for quite some
time.
I think the purpose of coatings are to stop the reflection by allowing
the wavelength to pass through on a predictable path.
Gregg
From: Omer Nezih Gerek
So, my question is; how do the drop in
| filters work? I presume they are in between some elements. For the UV
| case, for example, it attenuates the UV rays, but where do the
cancelled
| light go? Are they reflected? If so, they are reflected back to the
other
| elements.
| If absorbed (I do not think so), it should heat up. For the
polarizers,
| things seem even more severe. Companies seem to try to eliminate the
effect
| of back reflections by MC, but the filter just deliberately reflects
back
| something.
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