View Single Post
  #8  
Old 13-06-2020, 09:03 AM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Sydney
Posts: 22,080
Quote:
Originally Posted by Sunfish View Post
Yes. A free form mirror from Ricoh.

https://www.ricoh.com/technology/tech/040_projection

Would take some fancy software to collimate an off axis Pringle
Looking at how that projector works that close to the wall I'm starting to understand how it would work on a telescope. I couldn't visualise the light path at first from the pringle. So how would they decide the profile(s) to manufacture? Raytrace from the focal point of the system back to the aperture's last surface?
Reply With Quote