Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Gustavo Ramírez-Zavaleta"'
Autor:
Estela López Olazagasti, César Eduardo Hernández y del Callejo, Eduardo Tepichin, Gustavo Ramírez-Zavaleta, Jorge Ibarra-Galitzia
Publikováno v:
SPIE Proceedings.
Keratoconus is a corneal disease in which the cornea assumes a conical shape due to an irregular alteration of the internal structure of the corneal tissue and sometimes is progressive, especially in young people. Anatomically, the main signs of kera
Autor:
Eduardo Tepichin-Rodriguez, David Sánchez-de-la-Llave, Estela López-Olazagasti, Gustavo Ramírez-Zavaleta, Angel S. Cruz Félix
Publikováno v:
SPIE Proceedings.
The analysis and measurement of the wavefront aberration function are very important tools in the field of visual optics; they are used to understand the performance of the human eye in terms of its optical aberrations. In recent years, we have compa
Autor:
Angel S. Cruz Félix, Gustavo Ramírez-Zavaleta, Estela López-Olazagasti, Eduardo Tepichin, J. Ibarra, David Sánchez-de-la-Llave
Publikováno v:
SPIE Proceedings.
In recent years we have been working in the characterization of the objective average performance of a set of uncorrected human eyes with a 20/20 visual acuity, described as the resultant average wavefront aberration function (WA), point-spread funct
Autor:
Lucerito Morales-Tellez, Eduardo Tepichin, Estela López-Olazagasti, Gustavo Ramírez-Zavaleta, Marco A. Rosales
Publikováno v:
SPIE Proceedings.
In order to explore and analyze the effect of an ablation performed on the anterior corneal surface, it is useful to calculate the refractive power maps of the original and the treated corneas. The optical characteristics of the anterior corneal surf
Autor:
Marco Antonio Rosales-Medina, Gustavo Ramírez-Zavaleta, Ponciano Rodriguez-Montero, Elizabeth Vela-Esparza, Eduardo Tepichin-Rodriguez
Publikováno v:
SPIE Proceedings.
The self-imaging phenomenon under coherent illumination or Talbot effect has been widely used in different fields including optical metrology. According to the Talbot effect, when a periodic grating is illuminated with spatially and temporary collima
Autor:
Estela López-Olazagasti, Eduardo Tepichin, Gustavo Ramírez-Zavaleta, R. Cantú, M. I. Rodríguez-Rodríguez, Marco A. Rosales
Publikováno v:
SPIE Proceedings.
In ophthalmology, the laser excimer corneal surface ablation used to correct the refractive eye defects, such as myopia, astigmatism and hyperopia and, more recently, presbyopia is known as refractive surgery. Typically, the characterization of the c
Autor:
Eduardo Tepichin-Rodriguez, Jorge Ibarra-Galitzia, E. Sanchez y Aguilera, David Sanchez-de-la-Llave, Gustavo Ramírez-Zavaleta, E. Rojas-Oropeza
Publikováno v:
SPIE Proceedings.
Based on the Lau Effect we propose a system suitable for eliminating non-periodic noise on bi-dimensional periodic structures in which a liquid crystal display (LCD) is used as a dynamic grating source. Experimental results obtained with our proposal
Autor:
Eduardo Tepichin-Rodriguez, A. Sauceda-Carvajal, Jorge Ibarra-Galitzia, Gustavo Ramírez-Zavaleta
Publikováno v:
Optical Engineering. 46:058001
Dynamic noise elimination in 2-D periodic structures is achieved with a liquid crystal display used as a 2-D incoherent reconfigurable source. The method, which is based on the Lau effect, shows that under certain conditions it can be used for correc