Hi Nadav,

When you say it’s not working, what is the problem? I downloaded your file and it looks alright to me. Are you referring to the odd thing happening in the corners of your lens?

On your aperture properties, you’ve set a UDA Scale of 12.7 and your UDA describes a 2 by 2 rectangle (-1 to 1 in both X and Y). Therefore, the effective aperture is 25.4 by 25.4. However, your lens is only about 25.4 in diameter. OpticStudio needs to extend the surface of your lens to fit the rectangular aperture and by doing so, the lens thickness also reduces to the point where it becomes zero, and even turns negative, which is a problem and the reason for the odd corners I believe.

If you reduce the UDA Scale to 8, for example, you get the expected result because the aperture fits over the lens:

I’m not sure this was your problem, but let me know otherwise. Also, for a rectangular aperture, you don’t need a UDA. There’s already an aperture type: Rectangular Aperture that you can use.

Hope this helps.

Take care,

David

Hi David,

Thanks for the quick answer.

But when scaling to 8, the lens is too small and some rays don’t enter the system:

Hi Nadav,

I said 8 just as an example. The root cause of your problem is that the semi-diameter of your lens is too small. You need to increase it, but then you’ll have the problem of negative edge thickness. You might need to re-optimize this lens at a larger scale with Edge Thickness constraints.

I hope that makes sense.

Take care,

David

Hi David,

I think i understand.

Another problem with some connection:

I used an UDA file to create lens with curved AND straight lines:

When I try to create IGES file when there is a folding mirror, the lens after the mirror don’t appear correct.

Thanks again,

Nadav

Hi David,

Thanks for the answer.

The glass + mirror is a cubic fold prism