It is often very convenient to analyze rays with specific qualities in order to assess the design and make adjustments to improve performance. The Filter string is a convenient tool in OpticStudio which allows the definition of a test that rays must pass before they are drawn or displayed. Filter strings can be used to perform a full optomechanical assessment of stray light, and will consider reflections, scattering, and coatings to both mechanical and optical components.
How to analyze stray light in non-sequential mode in OpticStudio using the Filter string
What Filter strings are and how to write them
How to locate rays with specific properties via the Filter string
How to use Filter strings with the Layout plots, Detector Viewer, and Ray Database Viewer
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