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Cannot determine object coordinates error

  • 20 January 2023
  • 1 reply
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Hello Zemax team,

My question is regarding an error I met when I use a lens black box from lens vendor. As the screenshot below, I have tried to put the object to 1 meter away in front of the lens by adjusting the surface 1 thickness. However, an error as “cannit determine object coordinates” shows up once entered. How to fix this error or what’s the proper method to change the object distance at the black box? Thanks. 

 

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Best answer by Sandrine Auriol 26 January 2023, 17:21

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Userlevel 6
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Hi @hzhang23 !

The issue is that OpticStudio is struggling to fill the STOP with rays. The error is described in our help files. Can you move the STOP before the blackbox?

 

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