Set the following system parameters

System unit to mm (System > General > Units)
Wavelength to 550um (System > Wavelengths)
Set one field with values X=0 and Y=0 (System > Fields)
Set system aperture as Entrance Pupil Diameter of 15mm (System > General > Aperture)

Enter surfaces in the Lens Data Editor as shown below.

User the Tilt/Decenter Elements tool, under Tools > Coordinates > Tilt/Decenter Elements, to tilt the surface #3 by -45 degrees.

Open the 3D layout with 5 rays in the Y axis only.