Hi Ata,

Yes, in non-sequential mode the Boolean operations make applying an aperture fairly straightforward.

In sequential mode you can apply a user-defined aperture (UDA) to trim a lens.  If you use a rectangular or other standard shape aperture, then it’s best if the aperture is fully contained within the clear semi-diameter of the circular lens. Otherwise, OpticStudio will extrapolate the surface out beyond the original clear aperture.  This detail is noted in the help documentation:

For example, if we start with a circular lens, and a rectangular aperture is applied such that a portion of the aperture area lies outside of the lens clear aperture, then OpticStudio converts the lens to one with a pure rectangular cross section (with corners being outside of the original clear aperture):

However, a user-defined aperture can provide a more custom solution.  For example, it is possible to cut the lens down on just two sides without changing the circular nature of the lens in the orthogonal direction:

Here’s the UDA syntax for the aperture shown above:

It was then scaled to match the circular lens size:

Note this user defined aperture is applied to both sides of the circular lens.

Regards,

Jeff