Quote:
Originally Posted by Stefan Buda
That is one reason. Another is to give the lenses the freedom to self centre themselves. For that to work, with such small gaps, the lenses must have very small wedge errors.
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Just one more question(s) Stefan, then I'll leave you alone
Is the rotational aspect important when stacking small lenses like it is for bigger surfaces like mirrors in a folded light path and what is achieved by rotating optical components on their axis? I read it can add up or cancel errors. Is that all it is and does it make a big difference in your opinion or it doesn't really matter? Is that something you test when you do the final assembly with your mirrors?