I little while back, I posted here about repairing a prism where the cement had started to become opaque. https://www.cloudyni...cemented-prism/
I have recemented the prism, but it is not reflecting the image like it should be. I estimate less than 1% of the light is being reflected where it should be ~50%. Almost all light is being passed straight through.
I am starting to suspect there was a reflective coating on the right angle prism element in addition to the cement.
It is hard to google without knowing the right terms. I am guessing the right angle prism I have is actually a "right angle prism mirror." The stuff I thought was "coatings" were actually a reflective coating as opposed to a anti-reflective coating?