Definition and use of spatial frequencies in Fourier Optics and in Physiological Optics

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Spatial frequencies are often employed both in Fourier Optics and in Physiological Optics. According to Fourier Optics, any object can be synthesized as a superposition of harmonics of different spatial periods and the spatial frequency, defined as the inverse of the corresponding period, is measure...

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Autores principales:	Comastri, S.A., Simon, J.M., Martin, G., Colombo, E., Issolio, L., Santillan, J., Aguirre, R.
Formato:	JOUR
Materias:	Contrast sensitivity Optical design Spatial frequencies
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00303917_v40_n1_p119_Comastri
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00303917_v40_n1_p119_Comastri
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spelling	todo:paper_00303917_v40_n1_p119_Comastri2023-10-03T14:39:55Z Definition and use of spatial frequencies in Fourier Optics and in Physiological Optics Comastri, S.A. Simon, J.M. Martin, G. Colombo, E. Issolio, L. Santillan, J. Aguirre, R. Contrast sensitivity Optical design Spatial frequencies Spatial frequencies are often employed both in Fourier Optics and in Physiological Optics. According to Fourier Optics, any object can be synthesized as a superposition of harmonics of different spatial periods and the spatial frequency, defined as the inverse of the corresponding period, is measured in cycles per millimeter. On the other hand, in Physiological Optics, the spatial frequency is the inverse of the angle subtended at the eye of the observer by a cycle of a sinusoidal grating and its units are cycles per degree. In the present paper, the definition of transfer functions and spatial frequencies and the relations between the cutoff spatial frequencies and the limits of resolution used in both disciplines are analyzed and compared. Applications of Fourier theory in optical design (production limited microscopes) and also in visual quality tests (contrast sensitivity) are shown. © Sociedad Española de Óptica. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00303917_v40_n1_p119_Comastri
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Contrast sensitivity Optical design Spatial frequencies
spellingShingle	Contrast sensitivity Optical design Spatial frequencies Comastri, S.A. Simon, J.M. Martin, G. Colombo, E. Issolio, L. Santillan, J. Aguirre, R. Definition and use of spatial frequencies in Fourier Optics and in Physiological Optics
topic_facet	Contrast sensitivity Optical design Spatial frequencies
description	Spatial frequencies are often employed both in Fourier Optics and in Physiological Optics. According to Fourier Optics, any object can be synthesized as a superposition of harmonics of different spatial periods and the spatial frequency, defined as the inverse of the corresponding period, is measured in cycles per millimeter. On the other hand, in Physiological Optics, the spatial frequency is the inverse of the angle subtended at the eye of the observer by a cycle of a sinusoidal grating and its units are cycles per degree. In the present paper, the definition of transfer functions and spatial frequencies and the relations between the cutoff spatial frequencies and the limits of resolution used in both disciplines are analyzed and compared. Applications of Fourier theory in optical design (production limited microscopes) and also in visual quality tests (contrast sensitivity) are shown. © Sociedad Española de Óptica.
format	JOUR
author	Comastri, S.A. Simon, J.M. Martin, G. Colombo, E. Issolio, L. Santillan, J. Aguirre, R.
author_facet	Comastri, S.A. Simon, J.M. Martin, G. Colombo, E. Issolio, L. Santillan, J. Aguirre, R.
author_sort	Comastri, S.A.
title	Definition and use of spatial frequencies in Fourier Optics and in Physiological Optics
title_short	Definition and use of spatial frequencies in Fourier Optics and in Physiological Optics
title_full	Definition and use of spatial frequencies in Fourier Optics and in Physiological Optics
title_fullStr	Definition and use of spatial frequencies in Fourier Optics and in Physiological Optics
title_full_unstemmed	Definition and use of spatial frequencies in Fourier Optics and in Physiological Optics
title_sort	definition and use of spatial frequencies in fourier optics and in physiological optics
url	http://hdl.handle.net/20.500.12110/paper_00303917_v40_n1_p119_Comastri
work_keys_str_mv	AT comastrisa definitionanduseofspatialfrequenciesinfourieropticsandinphysiologicaloptics AT simonjm definitionanduseofspatialfrequenciesinfourieropticsandinphysiologicaloptics AT marting definitionanduseofspatialfrequenciesinfourieropticsandinphysiologicaloptics AT colomboe definitionanduseofspatialfrequenciesinfourieropticsandinphysiologicaloptics AT issoliol definitionanduseofspatialfrequenciesinfourieropticsandinphysiologicaloptics AT santillanj definitionanduseofspatialfrequenciesinfourieropticsandinphysiologicaloptics AT aguirrer definitionanduseofspatialfrequenciesinfourieropticsandinphysiologicaloptics
_version_	1807317049190383616

Definition and use of spatial frequencies in Fourier Optics and in Physiological Optics

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