Hi Renaud,

I tried it on my end and also get the same behaviour. I suspect it relates to the columns used by DSLP. If you look in your screenshot there are two empty columns between Sruf and Data, as well as between Remove and Orientation. If you put the OPEV parameters by the columns they correspond to, it behaves a little bit better for me. Meaning, in your case, you could use:

OPEV(OCOD(“DSLP”), 1, 0, 1, 2, 0, 0)

However, one cannot access the Orientation column. I suspect this is a bug.

Take care,

David

Thank you David.

Indeed, it works with your example but, as you said, we cannot access the last data of the operand, which makes it a bit useless to me…

Probably a bug indeed. I will contact Zemax support to report it.

Thanks again.

Renaud

Hi Renaud,

The OPEV function can only access upto 4 arguments for a merit function operand. For an operand like DSLP you’ll need to use the OPEW function instead. The following should work for you.

print OPEW(OCOD("DSLP"),1,0,1,2,0,0,0,1)

Thanks,

Chris

Great! Thank you Chris. 

I should have read that better 

Happy to help. That’s what we have a community for 

Thanks Chris! I also didn’t read this :(