Performing a Propagation Errors Analysis

The following procedure helps you perform a propagation errors analysis in order to decrease the errors rate.

To perform a propagation errors analysis:

Note: Propagation errors analysis is not compatible with Export and Linked Export simulations.
Prerequisites: You must have created a Direct or Inverse simulation.
  1. In the Simulation tree, right-click the simulation and click Options to open the advanced settings.
  2. In the Direct/Inverse Simulation tab, check Propagation error analysis.
  3. Run the simulation.

    A *.lpf is generated in the Speos output files folder following this filename format SimulationName.Propagation-Error.lpf.

    The *.lpf file does not appear as a child result of the simulation in the tree.

  4. Once the simulation is finished, right-click the simulation in the tree and click Show rays in error .
  5. In the *.lpf definition panel, define what type of error to display and how you want to display them.
    • With Ray number, control the number of rays to be displayed in the 3D view.

    • In the Error section, define the error Type.

      For more information on the different error types, refer to Understanding Propagation Errors.

    • Define what visual information to display between Last impacts, Rays, Impacts, Rays and Impacts.
    • Define the Thickness of drawing that suits best for you.
  6. If you want to better visualize where do rays in error pass:
    1. Click Section mode .
      The Section mode appears in the 3D view and you can move it thanks to the 3D Manipulator to modify its position and orientation therefore cutting the geometry and see where do rays pass.
    2. If the 3D Manipulator is not enough discernible, in the Section mode section, with the Rotation handle distance from center parameter you can modify the distance of the rotation manipulators to the center of the 3D Manipulator.
  7. Modify your optical system according to the error analysis.