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Hi

I am using 2025 R2.02 version. It looks like the issue previously reported about the ISO drawing has been partially solved which is cool (https://community.zemax.com/topic/show?tid=5444&fid=7).

I still have one problem, it’s the number of digits used for the SAG and edge thickness on the drawings.

There is 5 to 6 digits on my drawing.

 

In the L (R) surf TAB of the drawing, you can uncheck the Automatic box and change the surface sag but it seems to have no effect on the drawing…

 

Do I miss something?

Renaud

  • Hey Renaud, I don’t know the answer to the question you ask, but I’m scared if you’re using numbers to six digits. If your lens units are mm, you are specifying thicknesses to the nearest nanometer!

    You should always round numbers up a bit before you do tolerancing. Instead of 2.41233 mm, try 2.41 or better 2.4. There’s a ‘Design Lockdown’ tool that can do all this tidying up for you. You should rarely ever need more than X.XXX signifivant figures, X.XX is probably as tight as you’d ever need. Remember you then tolerance at the next lower digit.

    Mark

Hi Mark.

I completely agree with you and it’s why I’m looking for a way to reduce the number of digits. My concern is on the sag values that are indicated on drawing and automatically calculated by Zemax. They are printed with min 6 digits and I can’t find a way to decrease it.

 

Renaud

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