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© 2005 COPYRIGHT SPIE--The International Society for Optical Engineering., We present a comparative study between two experimental methods to determine the modulation transfer function (MTF) of a hololens system. The two hololenses were previously recorded and tested for filtering pseudocolor. In the first method we used the classical Foucault test. The second, alternative method is based on the digital image processing of a perfect edge under incoherent illumination. From the digitized intensity line profiles we obtain the MTF and cutoff frequency of the optical system according to the reciprocity between line spread function and MTF. Comments are made on the applicability and accuracy of these two methods., Depto. de Óptica, Fac. de Ciencias Físicas, TRUE, pub

© 2005 COPYRIGHT SPIE--The International Society for Optical Engineering., A systematic procedure for calculating the general transfer function of a cascaded linear optical system working under the Fresnel regime is presented. The validity of neglecting the quadratic phase factors is also discussed. For the case of inhomogeneous optical devices with Gaussian profiles, explicit expressions for the transfer functions are calculated through specific Gaussian integrals., Depto. de Óptica, Fac. de Ciencias Físicas, TRUE, pub

© 2005 COPYRIGHT SPIE--The International Society for Optical Engineering., Depto. de Óptica, Fac. de Ciencias Físicas, TRUE, pub

Depto. de Óptica, Fac. de Ciencias Físicas, TRUE, pub

© Spie-Soc Photo-Optical Instrumentation Engineers., A new integral equation is presented and solved by a matrix method based on iterative procedures to obtain information about the transmission and reflection of light (scalar field) in inhomogeneous media. The method, which may be applied to a wide category of arbitrary x,y,z-varying refractive index profiles, is used to study the holographic lens/ SELFOC optical fiber coupling system. The properties of the spatial transfer function for invariant linear systems are used., Depto. de Óptica, Fac. de Ciencias Físicas, TRUE, pub