Yes, the same lens, but a different printed optics module. There is an STL with ‘infinity’ in the name for transmission illumination using infinity corrected objectives. It is linked in the front page of the Delta stage instructions. There does not seem to be an infinity corrected version built for reflection optics.
The camera on the optics modules for the Delta stage is rotated 45 degrees compared to the cartesian Microscope, so you do need to use the Delta stage optics module versions.