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Question

Sequential to non-sequential with an OAP

  • July 30, 2025
  • 4 replies
  • 99 views
Travis3

Hello,

 

I am trying to model this OAP from thorlabs in zemax: Thorlabs - MPD269-G01 Ø2" 90° Off-Axis Parabolic Mirror, Prot. Aluminum, RFL = 6".

 

I am able to open in sequential mode, but when I want to convert it to non-sequential mode I get this (see below)

This happens when I do design lockdown or not. 

 

I also want to swap the light source and imaging plane so the source is a diverging point source at the focal point and the light is a collimated beam off the OAP. 

 

Any and all help is appreciated, thanks!

4 replies

Y
  • yu.deyang
  • Infrared
  • July 31, 2025

can export  OAP to a CAD file like STEP in sequential mode, then import it to non-sequential mode?

Travis3
  • Travis3
  • Author
  • Monochrome
  • July 31, 2025

I tried to do that and the mirror surface is missing from the step file. The body is in the step file but it is hollow.

Y
  • yu.deyang
  • Infrared
  • August 1, 2025

Have you tried uncheck parasolid or acis library in project preference, then re-export it as a step file and import to non-sequential mode?

Jeff.Wilde
Luminary
Forum|alt.badge.img+3
  • Jeff.Wilde
  • Luminary
  • August 1, 2025

​@Travis3:

You can also make the OAP yourself in non-sequential mode.  This link may be helpful: 

Regards,

Jeff

Yang.Yongtao
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