Abstract
Seidel aberration coefficients can be expressed by Zernike coefficients. The least-squares matrixinversion method of determining Zernike coefficients from a sampled wave front with measurement noise has been found to be numerically unstable. We present a method of estimating the Seidel aberration coefficients by using a two-dimensional discrete wavelet transform. This method is applied to analyze the wave front of an optical system, and we obtain not only more-accurate Seidel aberration coefficients, but we also speed the computation. Three simulated wave fronts are fitted, and simulation results are shown for spherical aberration, coma, astigmatism, and defocus.
Original language | English |
---|---|
Pages (from-to) | 2408-2413 |
Number of pages | 6 |
Journal | Applied Optics |
Volume | 41 |
Issue number | 13 |
DOIs | |
State | Published - 1 May 2002 |