Ronchi test with equivalent wavelength
Por:
García-Arellano A., Granados-Agustín F., Campos-García M., Cornejo-Rodríguez A.
Publicada:
20 may 2012
Resumen:
In this work we present an experimental proposal to evaluate optical surfaces with high slopes or with infrared wavelengths based on the Ronchi test as well as on the concept of equivalent wavelength. A spatial modulator is used in the implementation of the Ronchi test, and a white LED with different color filters is employed in order to generate different wavelengths. Two Ronchigrams with incoherent light, each one for a different color, are registered and computationally processed, thus generating a third one with an equivalent wavelength. The results obtained show that it is possible to generate patterns with traditional rulings and substructured sequences of Katyl. Additionally, we discuss some of the limitations of employing different rulings. Finally, we found that appropriate image enhancing algorithms allow us to improve the visibility of the resulting fringes and thus obtain a better analysis. (C) 2012 Optical Society of America
Filiaciones:
García-Arellano A.:
Departamento de Óptica, Instituto Nacional de Astrofísica, Óptica y Electrónica Sta. Ma. Tonantzintla, Puebla, 72000, Mexico
Granados-Agustín F.:
Departamento de Óptica, Instituto Nacional de Astrofísica, Óptica y Electrónica Sta. Ma. Tonantzintla, Puebla, 72000, Mexico
Campos-García M.:
Univ Nacl Autonoma Mexico, Ctr Ciencias Aplicadas & Desarrollo Tecnol, Mexico City 04510, DF, Mexico
Cornejo-Rodríguez A.:
Departamento de Óptica, Instituto Nacional de Astrofísica, Óptica y Electrónica Sta. Ma. Tonantzintla, Puebla, 72000, Mexico
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