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

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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Guardado en:
Detalles Bibliográficos
Publicado: 2007
Materias:
Contrast sensitivity
Optical design
Spatial frequencies
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00303917_v40_n1_p119_Comastri
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 paper:paper_00303917_v40_n1_p119_Comastri
record_format dspace
spelling paper:paper_00303917_v40_n1_p119_Comastri2023-06-08T14:55:47Z Definition and use of spatial frequencies in Fourier Optics and in Physiological Optics 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. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00303917_v40_n1_p119_Comastri 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
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.
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
publishDate 2007
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00303917_v40_n1_p119_Comastri
http://hdl.handle.net/20.500.12110/paper_00303917_v40_n1_p119_Comastri
_version_ 1768541880998428672

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