Advances in Engineering Advances in Engineering features breaking research judged by Advances in Engineering advisory team to be of key importance in the Engineering field. Papers are selected from over 10,000 published each week from most peer reviewed journals.
Optics Express, Vol. 21, Issue 6, pp. 6851-6865 (2013).
Lucimara Cristina Nakata Scaduto, Jose Sasian, Mario Antonio Stefani, and Jarbas Caiado de Castro Neto .
Instituto de Física de São Carlos, Universidade de São Paulo (IFSC-USP), Av. Trabalhador São-carlense, 400, CEP:13560-970, São Carlos, SP, Brazil and
Department of Research and Development, Opto Eletrônica S.A., R. Joaquim A.R. de Souza, 1041, CEP:13563-330, São Carlos, SP, Brazil and
College of Optical Sciences, University of Arizona, 1630 East University Boulevard, Tucson, Arizona 85721, USA.
Abstract
Misalignments always occur in real optical systems. These misalignments do not generate new aberration forms, but they change the aberration field dependence. Two-mirror telescopes have been used in several applications. We analyze a two-mirror telescope configuration that has negligible sensitivity to decenter misalignments. By applying the wave aberration theory for plane-symmetric optical systems it is shown that the asphericity in the secondary mirror, if properly chosen, can compensate for any decenter perturbation allowing third-order coma unchanged across the field of view. For any two-mirror system it is possible to find a configuration in which decenter misalignments do not generate field-uniform coma.
© 2013 OSA
