Meshing Overview

The following page helps you understand the basics of the meshing on Speos.

Definition

Creating a meshing on an object, a face or a surface allows you to mobilize and concentrate computing power on one or certain areas of a geometry to obtain a better level of detail in your results. In a CAD software, meshing helps you subdivide your model into simpler blocks. By breaking an object down into smaller and simpler pieces such as triangular shapes, you can concentrate more computing power on them, and therefore improve the quality of your results. During a simulation, it will no longer be one single object that interprets the incoming rays but a multitude of small objects.

An adequate meshing respects the shape of the geometry and is watertight.

Note: An adequate meshing shape should have priority over a watertight meshing.

Meshing in Speos

The meshing in Speos can be applied different ways. A priority order is applied according to the way the meshing has been set.
  • The simulation meshing is a meshing that is always applied during the simulation of the system. The definition of the simulation meshing will be applied for all objects included in the simulation. The features on which you can define the simulation meshing are:
    • Interactive Simulation
    • Direct Simulation
    • Inverse Simulation
    • Optical Part Design Exchange
    • Light Box Export
    Note: For the Optical Design Exchange and Light Box Export features, the Meshing parameters are directly applied in the feature's Options. The meshing set is considered as simulation meshing regarding the priority.

  • The local meshing is a meshing that you decide to apply on a specific body, face, or part of a face because you want to emphasize this area in the result. The local meshing is not mandatory. If a local meshing is applied, it has priority over the simulation meshing where it has been applied.

Therefore, the meshing priority order is:
  1. Local meshing applied on faces
  2. Local meshing applied on body
  3. Simulation meshing applied on body

Migration Information

  • For a file created in version 2021 R1 or before: if Sag / Step mode was Proportional, the file is migrated to used Proportional to Face size in version 2022 R2.
  • For a file created in versions 2021 R2 or 2022 R1: if Sag / Step mode was Proportional to Body size, the file is migrated with the same settings in version 2022 R2.
  • For a file created before version 2022 R2: if Sag / Step mode was Fixed, the file is migrated with no change.
Warning: If you created a file in version 2021 R1, then migrated to 2021 R2 and changed the values for Sag / Step (when it became Proportional to Body size), these values may not be good in 2022 R2 when the document is migrated back to Proportional to Face size. You cannot know that the values were changed over the versions.