Solving Faces with Large Element Physical Optics (LE-PO)

To solve a model with large element physical optics (LE-PO), you must activate LE-PO for each relevant face.

1. Select the face (or faces) in the in the 3D view or in the details tree that you want to solve with LE-PO.
2. In the details tree, from the right-click context menu, select Properties.
3. On the Face properties dialog, click the Solution tab.
4. Under Solve with special solution method, from the drop-down list, select one of the following:
   • To use complete ray tracing, select Large element (PO) - full ray-tracing.
   • If the assumption can be made that all triangles on which the LE-PO approximation is made, are illuminated, select Large element (PO) - always illuminated. Ray-tracing is switched off to reduce run time.
   • To use full ray tracing, but the metallic triangles are only lit from the front, select Large element (PO) - only illuminated from front.
5. Click OK to save the face properties and to close the dialog.