Abstract

A method is presented to sense the wave front at the exit of an optical surface. This method uses a set of diffracted rays generated when a He-Ne laser impinges on a rectangular diffraction grating. The grating was placed near the curvature center of the surface to be tested. After they are reflected in the test surface, the diffracted rays have the information of the slopes of the wave front, like in the Hartmann test. The Hartmann pattern was registered near the curvature center and captured with a CCD camera. The slopes for each ray are measured from the experimental pattern, and they are compared with the ideal ones simulated in a computer. The evaluation was carried out by use of Seidel polynomials to obtain the information of the aberrations of a mirror 53 cm in diameter.

© 2003 Optical Society of America

Phase-diversity wave-front sensing with a distorted diffraction grating

Paul M. Blanchard, David J. Fisher, Simon C. Woods, and Alan H. Greenaway
Appl. Opt. 39(35) 6649-6655 (2000)

Ronchi and Hartmann tests with the same mathematical theory

Alberto Cordero-Davila, Alejandro Cornejo-Rodriguez, and Octavio Cardona-Nuñez
Appl. Opt. 31(13) 2370-2376 (1992)

Ronchi test with a square grid

A. Cordero-Dávila, E. Luna-Aguilar, S. Vázquez-Montiel, S. Zárate-Vázquez, and M. E. Percino-Zacarias
Appl. Opt. 37(4) 672-675 (1998)

Direct ray aberration estimation in Hartmanngrams by use of a regularized phase-tracking system

Manuel Servin, Francisco Javier Cuevas, Daniel Malacara, and Jose Luis Marroquin
Appl. Opt. 38(13) 2862-2869 (1999)

Wave-front sensing from defocused images by use of wave-front slopes

Marcos A. van Dam and Richard G. Lane
Appl. Opt. 41(26) 5497-5502 (2002)