Primary wavefront aberrations calculation from a defocused image or a Hartmanngram.
A wavefront aberration can be retrieved from a defocused image or a Hartmanngram by several different methods using diffraction theory and Fourier transforms. In this manuscript, we describe an alternate method for wavefront aberration determination from a defocused image or a Hartmanngram using a geometric l approximation. The main assumption is that the image is defocused, with the observation plane outside the caustic limits. The result will be applied to the retrieval of a wavefront with primary aberrations from a Hartmanngram or defocused image without the need for any transversal aberration integration.
Malacara-Doblado
Daniel
D
Centro de Investigaciones en Optica, A. C., Loma del Bosque 115, León Gto. México 37150. dmalacdo@cio.mx
Malacara-Hernández
Zacarias
Z
Gómez-Vieyra
Armando
A