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Long distance focusing telescope

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I am trying to design a long distance focusing telescope (beam focus at 10 meters), My design is based on convex and concave mirrors (EFL : -100/400 mm) The distance between mirror should be 317 mm in order to obtain the beam focus at 10 meters. I use Comsol but I cannot see the converging of rays at long distance : I guess that Rayleigh distance is relatively so long. Someone knows how can I proceed to see the beam focusing at long distance ? Thank you


0 Replies Last Post 15.07.2021, 05:18 GMT-4
COMSOL Moderator

Hello Abderazek Talbi

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