Abstract

By using an effective transfer function, one can describe conveniently the nonlinear mapping between an input thin transparent structure and its image irradiance distribution. This effective transfer function is useful for making sound comparisons between several spatial filters employed for phase rendering. Here, we unveil three nonconventional Schlieren techniques, which employ absorption masks whose amplitude distributions are described by square root monomials, by sigmoidal functions, or by off-axis Gaussian functions. We apply the effective transfer function for analyzing the similarities between the proposed masks and other Schlieren techniques.

© 2020 Optical Society of America

Quantitative Fourier analysis of schlieren masks: the transition from shadowgraph to schlieren

Fabrizio Croccolo and Doriano Brogioli
Appl. Opt. 50(20) 3419-3427 (2011)

Reducing field depth: annular Hadamard masks

Cristina M. Gómez-Sarabia, Luis Ledesma-Carrillo, and Jorge Ojeda-Castañeda
Appl. Opt. 59(22) 6632-6637 (2020)

Multi-Gaussian phase function model for off-axis laser beam scattering

Andrew Zardecki and Siegfried A. W. Gerstl
Appl. Opt. 26(15) 3000-3004 (1987)

Zernike monomials in wide field of view optical designs

Tim P. Johnson and Jose Sasian
Appl. Opt. 59(22) G146-G153 (2020)

Imaging phase objects with square-root, Foucault, and Hoffman real filters: a comparison

Arkadiusz Sagan, Slawomir Nowicki, Ryszard Buczynski, Marek Kowalczyk, and Tomasz Szoplik
Appl. Opt. 42(29) 5816-5824 (2003)