Hi all,
I am trying to simulate aKöhler illumination in Zemax to have a homogeneous and collimated light on my target. I have designed a Köhler illumination with collector and condenser lens, apertures, etc and could achieve a homogeneous and collimated illumination. But the point is that the system is highly sensitive to its parameters. So that if I just move one lens for less than a millimeter, everything is ruined. I wonder how I can build up this set up on an optical bench with real lenses, etc and still have a homogeneous and collimated illumination. How could I adjust the whole optics so accurately? Or is something wrong with my simulation?
Best regards
Sara
Masoud Dehghanipour
Thank you so much for your answer. My goals is to keep both RSCE and EXPP operands zero (or as small as possible). But when I use the TOLR operand I cannot use the Merit function as criterion because it would be an infinite loop, and when I choose another criterion such as RMS spot radius or MTF, it won't help that much. Do you have any suggestions in this case?Many thanks and best regards
From an illumination point of view, you may overfill your target to reduce sensitivity.
Hello Sara,
we also want to design with ZEMAX a (simple) kohler illuminator, we want to use it to collect light from the plasma emission of LIBS experiments with a bundle of fiber optics, we got the idea from this paper: Article EXPRESS: Homogenization of Plasma Emission Collection for Mu...
We have reproduced this simple design and it works, but the output is not collimated. I guess that using lens with larger focal length would result in lower sensitivity? in that design, the second lens is far from the focus point of the first lens, I don't know if that also helps to have better tolerances.
I will be very grateful if you could answer this question: how do you quantify in ZEMAX the amount of "nonimaging" of a lens system? I mean, if I optimize for lowest RSCE, it could end in a design with low RSCE but not good homegenization. is there a figure of merit for that?
Thanks all in advance. good luck with your design!
Adolfo.
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