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On August 1, 2025, our articles will only be available on Ansys Optics. As they become available, use the new URL listed at the top of an article to update your bookmarks.

The Zemax Knowledgebase is moving!

On August 1, 2025, our articles will only be available on Ansys Optics. As they become available, use the new URL listed at the top of an article to update your bookmarks.
Note: Ansys Optics is in English only. If a translation is available on an individual article, it will be listed below the article title.
  1. Knowledgebase
  2. System Setup
  3. Tilted/Decentered Systems

Tilted/Decentered Systems

  • How to model an off-axis parabolic mirror at finite conjugates
  • Rotation Matrix and Tilt About X/Y/Z in OpticStudio
  • Demystifying the off-axis parabolic mirror
  • How to tilt and decenter a sequential optical component
  • How to model a scanning mirror
  • Why do rays trace behind a fold mirror surface?
  • How to work in global coordinates in a sequential optical system
  • How to restore coordinate systems using the Coordinate Return
  • How to model an off-axis parabolic mirror
  • How to pivot any element about any point in space


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