Dr. Mario Marcelo Lehman Profile

Dr. Mario Marcelo Lehman

Doctor of Physics at Sofilab SA de CV

SPIE Involvement:

Author

Publications (21)

Proceedings Article | 19 November 2003 Paper

Paper

Focalization of Fresnel-Cantor zone plates

Diana Calva Mendez, Mario Lehman

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.524579

KEYWORDS: Zone plates, Fractal analysis, Superposition, Radio propagation, Fresnel lenses, Electromagnetism, Ronchi rulings, Transmittance

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Proceedings Article | 19 November 2003 Paper

Paper

Superposition of fractal transmittances and the self-similarity function in the Fraunhofer region

Diana Calva Mendez, Mario Lehman

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.526892

KEYWORDS: Fractal analysis, Superposition, Electromagnetism, Diffraction, Diffraction gratings, Radio propagation, Binary data

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Proceedings Article | 19 November 2003 Paper

Paper

Moiré effect for the superposition of two Cantor gratings

Diana Calva Mendez, Mario Lehman

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.526888

KEYWORDS: Moire patterns, Superposition, Fractal analysis, Diffraction gratings, Signal processing, Geometrical optics, Diffraction, Data processing

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Proceedings Article | 26 December 2001 Paper

Paper

Percolation at the Fourier plane in optical systems

Mario Lehman, Carlos Aguirre-Velez

Proceedings Volume 4435, (2001) https://doi.org/10.1117/12.451137

KEYWORDS: Fractal analysis, Transmittance, Joint transforms, Optical correlators, Geometrical optics, Fourier transforms, Transition metals, Diffraction, Particles, Data processing

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Proceedings Article | 21 December 2001 Paper

Paper

Comparison between diffraction intensity for different planar geometries

Mario Lehman, Carlos Aguirre-Velez

Proceedings Volume 4436, (2001) https://doi.org/10.1117/12.451296

KEYWORDS: Fractal analysis, Diffraction gratings, Diffraction, Electromagnetism, Superposition, Far-field diffraction, Radio propagation, Visualization, Inverse optics, Software development

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Proceedings Article | 14 August 2001 Paper

Paper

Shearing interferometry to analyze two-dimensional fractal gratings

Gustavo Ramirez Zabaleta, Eduardo Tepichin-Rodriguez, Mario Lehman, Mario Garavaglia

Proceedings Volume 4419, (2001) https://doi.org/10.1117/12.437122

KEYWORDS: Fractal analysis, Interferometry, Lanthanum, Diffraction gratings, Electromagnetism, Superposition, Wavefronts, Laser optics, Metrology, Diffraction

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Proceedings Article | 14 August 2001 Paper

Paper

General conformal mapping applied to Koch pupils

Diana Calva Mendez, Mario Lehman

Proceedings Volume 4419, (2001) https://doi.org/10.1117/12.437184

KEYWORDS: Fractal analysis, Diffraction, Laser optics, Electromagnetism, Far-field diffraction, Correlation function, Diffraction gratings, Image segmentation, Electromagnetic scattering, Radio propagation

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Proceedings Article | 14 August 2001 Paper

Paper

Topological coordinates transformation and geometric effect on the scattered fields

Mario Lehman

Proceedings Volume 4419, (2001) https://doi.org/10.1117/12.437188

KEYWORDS: Scattering, Electromagnetic scattering, Maxwell's equations, Fractal analysis, Laser optics, Electromagnetism, Geometrical optics, Refractive index, Electromagnetic scattering theory, Numerical analysis

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Proceedings Article | 14 August 2001 Paper

Paper

Measurement of fractal characteristics in binary texture distributions

Fernando Manzano Licona, Diana Calva Mendez, Mario Garavaglia, Mario Lehman

Proceedings Volume 4419, (2001) https://doi.org/10.1117/12.437185

KEYWORDS: Fractal analysis, Binary data, Superposition, Particles, Lanthanum, Complex systems, Laser optics, Systems modeling, Composites, Crystals

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Proceedings Article | 14 August 2001 Paper

Paper

Lacunarity control on fractal and random rough surfaces

Gustavo Ramirez Zabaleta, Eduardo Tepichin-Rodriguez, Mario Lehman

Proceedings Volume 4419, (2001) https://doi.org/10.1117/12.437121

KEYWORDS: Fractal analysis, Laser systems engineering, Binary data, Speckle, Image processing, Laser optics, Particles, Speckle pattern, Radio propagation, Optical inspection

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Proceedings Article | 25 October 2000 Paper

Paper

Approximation to high-power beams with convolution method

Mario Lehman, Mario Garavaglia

Proceedings Volume 4095, (2000) https://doi.org/10.1117/12.405264

KEYWORDS: Convolution, Beam propagation method, Laser beam propagation, Thermodynamics, Wave propagation, Gaussian beams, Radio propagation, Materials processing, Geometrical optics, Carbon dioxide lasers

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Proceedings Article | 26 September 2000 Paper

Paper

Conformal mapping approximation to scattering from surfaces with Koch corrugation

Mario Lehman, Diana Calva Mendez

Proceedings Volume 4100, (2000) https://doi.org/10.1117/12.401660

KEYWORDS: Fractal analysis, Scattering, Electromagnetic scattering, Electromagnetism, Polarization, Laser scattering, Superposition, Iterated function systems, Adaptive optics, Electromagnetic radiation

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Proceedings Article | 30 June 2000 Paper

Paper

Nonspecular effects and entropy change from complex media

Mario Lehman

Proceedings Volume 4097, (2000) https://doi.org/10.1117/12.390591

KEYWORDS: Interfaces, Reflection, Fractal analysis, Multilayers, Electromagnetism, Integrated optics, Refractive index, Microwave radiation, Beam propagation method, Radio propagation

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Proceedings Article | 30 October 1998 Paper

Paper

Computation of the intensity distribution for a film on a GRIN substrate

Mario Lehman, Mario Garavaglia

Proceedings Volume 3426, (1998) https://doi.org/10.1117/12.328471

KEYWORDS: Refractive index, Interfaces, GRIN lenses, Scattering, Reflection, Diffraction, Electromagnetic scattering, Integrated optics, Vitreous, Electromagnetic radiation

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Proceedings Article | 13 October 1998 Paper

Paper

Characterization of the fractal properties from the scalar and vectorial point of view

Mario Lehman, Mario Garavaglia

Proceedings Volume 3467, (1998) https://doi.org/10.1117/12.326831

KEYWORDS: Fractal analysis, Near field optics, Diffraction, Electromagnetic radiation, Polarization, Thulium, Mathematical modeling, Superposition, Diffraction gratings, Transmittance

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Proceedings Article | 13 October 1998 Paper

Paper

In-order correlation of fractal transmittances defined cyclically

Mario Lehman, Mario Garavaglia

Proceedings Volume 3467, (1998) https://doi.org/10.1117/12.326830

KEYWORDS: Fractal analysis, Near field optics, Optical signal processing, Transmittance, Cesium, Lanthanum, Electromagnetism, Optical testing, Physics, Data processing

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Proceedings Article | 24 October 1997 Paper

Paper

Properties of in-order self-similarity function in the Frensel region for the Sierpinski carpet grating

Mario Lehman, D. Patrignani, L. De Pasquale, J. Pombo

Proceedings Volume 3159, (1997) https://doi.org/10.1117/12.284206

KEYWORDS: Fractal analysis, Superposition, Image processing, Diffraction, Fourier transforms, Light scattering, Transmittance, Scattering, Nondestructive evaluation, Convolution

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Proceedings Article | 26 September 1997 Paper

Paper

Scattering from planar surfaces with magnetic and thermal fluctuations

Mario Lehman

Proceedings Volume 3141, (1997) https://doi.org/10.1117/12.287801

KEYWORDS: Magnetism, Scattering, Interfaces, Refractive index, Laser scattering, Polarization, Diffraction gratings, Gaussian beams, Bromine, Electromagnetism

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Proceedings Article | 25 September 1997 Paper

Paper

Fringes superposition with computer-generated moire applied to position control

Mario Lehman, L. De Pasquale, D. Patrignani, J. Pombo

Proceedings Volume 3100, (1997) https://doi.org/10.1117/12.287738

KEYWORDS: Moire patterns, Interferometry, Photodiodes, Superposition, Michelson interferometers, Sensors, Control systems, CCD cameras, Spatial frequencies, Fringe analysis

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Proceedings Article | 19 August 1997 Paper

Paper

Filtering a periodical component of a regular fractal using speckle

Mario Lehman, L. De Pasquale, D. Patrignani, J. Pombo

Proceedings Volume 3101, (1997) https://doi.org/10.1117/12.281292

KEYWORDS: Fractal analysis, Speckle, Modulation, Optical signal processing, Optical filters, Polarizers, Image processing, Far-field diffraction, Diffraction, Superposition

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SPIE Journal Paper | 1 April 1995

Digital speckle pattern interferometry applied to a surface roughness study

Mario Lehman, Juan Pomarico, Roberto Torroba

OE, Vol. 34, Issue 04, (April 1995) https://doi.org/10.1117/12.10.1117/12.196533

KEYWORDS: Speckle pattern, Visibility, Surface roughness, Interferometry, Speckle, Fringe analysis, Lanthanum, Photography, Light scattering, Scattering

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Showing 5 of 21 publications

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