The Aberration Evaluation derived values node is available with the Ray Optics Module.
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Select the Filter by wavelength check box to exclude all rays except those of a specified vacuum wavelength. If this check box is selected, enter a Wavelength (default: 632.8 nm) and a Tolerance (default: 1 nm). If the difference between the specified wavelength and the vacuum wavelength of a ray exceeds this tolerance, then the ray will be ignored.
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Select the Filter by release feature index check box to exclude all rays except those released by a specific physics feature. Then enter an integer value for the index; the default is 1. This field is 1-indexed, meaning that 1 corresponds to the first ray release feature, 2 is the second ray release feature, and so on.
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Select the Filter by number of reflections check box to include rays only if they have reflected a specified number of times. Then enter an integer for the number of reflections; the default is 0. For this option to work correctly, it is necessary to select the Count reflections check box in the settings for the Geometrical Optics interface, before running the study.
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Select the Filter by additional logical expression check box to include rays if they satisfy another user-defined expression. The expression is considered to be true if it returns a nonzero value. The default expression is 1, which would cause all rays to be included.
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A list of Zernike polynomials and their derivation, properties, and references are included in the Ray Optics Modeling chapter of the Ray Optics Module User’s Guide.
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