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Zernike coefficients

Posted Aug 7, 2017, 4:55 a.m. EDT Ray Optics Version 5.2a 2 Replies

Emine Kaya-Cekin
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Hello,

What is the unit of Zernike coefficients that COMSOL calculates under the Derived Values/Aberration Evaluation?

Thanks in advance,

Emine
2 Replies Last Post Aug 8, 2017, 9:46 a.m. EDT
Christopher Boucher COMSOL Employee

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Posted: 7 years ago Aug 8, 2017, 8:42 a.m. EDT
Hi Emine,

The Zernike coefficients have units of length. They're multiplied by Zernike polynomials, which have been normalized (and thus nondimensionalized), to reconstruct the optical path length difference between rays in the focal plane.

Chris
Hi Emine, The Zernike coefficients have units of length. They're multiplied by Zernike polynomials, which have been normalized (and thus nondimensionalized), to reconstruct the optical path length difference between rays in the focal plane. Chris
Emine Kaya-Cekin
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Posted: 7 years ago Aug 8, 2017, 9:46 a.m. EDT
Updated: 7 years ago Aug 8, 2017, 9:46 a.m. EDT
Thank you very much for your quick response Chris.

Does ''units of length'' correspond to the length unit of Geometry or is it always ''m'' (meter) no matter what I choose in Geometry as my unit ?
Thank you very much for your quick response Chris. Does ''units of length'' correspond to the length unit of Geometry or is it always ''m'' (meter) no matter what I choose in Geometry as my unit ?

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