Hi Christabelle,

I suggest having a look at this article:

https://support.zemax.com/hc/en-us/articles/1500005487401-Improving-non-sequential-ray-tracing-speeds-with-nested-and-Boolean-objects

You can of course create a CAD and import it. But it will be slower than if you were using native objects. And when I say slower, I’m referring to the raytracing process.

I’m not sure I understood what you wanted properly, but here’s an example of how you could combine a Rectangular Volume and a Standard Lens object with a Boolean Native:

I’m attaching this example to my reply.

Take care,

David