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HYLD operand not available

  • January 8, 2025
  • 1 reply
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Stephen8686

I am trying to use the HYLD operand. When I type ‘hy’ into the merit function editor, HYLD comes up and I can enter it, but when I run/update the merit function it turns back to BLNK with comment “was HYLD”. In the optimization wizard under Optimization Goal, it wont let me select “Improve Manufacturing Yield” and the section bubble is grayed out. 

I am running a professional version of Zemax 22.2. Are these options just not available on my version? Or is there something I have to do to enable it?

Best answer by Sean Turner

If you are using a legacy Zemax perpetual license, then High Yield would not available. It was available for legacy subscription licenses only. If you switch to Ansys Zemax licensing, it should be available for all license levels. See these release notes for reference. 

 

As a side note, I am using  the latest release of Ansys Zemax and the HYLD operand is not mentioned in the help documentation. You can still add it to a merit function, and select “Improve Manufacturing Yield” in the merit function wizard, but the manual seems to have removed HYLD from the list of operands. I can’t find anything else in the forums or later release notes regarding this change. 

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Sean Turner
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  • Sean Turner
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  • Answer
  • January 8, 2025

If you are using a legacy Zemax perpetual license, then High Yield would not available. It was available for legacy subscription licenses only. If you switch to Ansys Zemax licensing, it should be available for all license levels. See these release notes for reference. 

 

As a side note, I am using  the latest release of Ansys Zemax and the HYLD operand is not mentioned in the help documentation. You can still add it to a merit function, and select “Improve Manufacturing Yield” in the merit function wizard, but the manual seems to have removed HYLD from the list of operands. I can’t find anything else in the forums or later release notes regarding this change. 

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