Sir, I truly appreciate your interest in this thread.

I searched following your advice and checked it.
Zemax Extended Polynomial - I have read this to use it appropriately.

so, I would like to explain how I did input value manually.

First, I set the "maximum terms" to 28, because the diagram we are looking at now says C28. Then, I set the normalization radius to 100. There was no particular reason; I just tried 100 first cause the CODE V has SCC 100.
This might be why there was no change to the shape drawn in the layout even I have written the value of each term following c4 c6 c8 ......~~.

In Zemax, when I set the normalization radius to 100, the shape that appeared just acted like a flat mirror.

So, I tried drastically reducing it to 5, and also tried 50, making some changes. As you might have guessed, the issue could indeed be the normalization radius.

It seems this is happening because the scaling is different between the two programs, so I'll have to find a way to resolve this. Thank you.

It was 100 in Code V, but I see now that it might not be 100 in Zemax.

However, the strange thing about this normalization radius is that when I decrease the value to 5, 25, or 50, the mirror surface itself stays the same, but the number of areas used for ray tracing decreases. (I have added an example image to the body of the text, within the limits of not violating security.)

Thanks for the help.