The compound microscope: Optical tube length or parfocalization?

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In various well-known textbooks for undergraduate students of physics, the compound microscope is described as having a standardized 'optical tube length'. On the other hand, in order to fulfil the parfocalization condition required by the human visual system to understand the relation bet...

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Detalles Bibliográficos
Autores principales: Simon, J.M., Comastri, S.A.
Formato: JOUR
Materias:
Optical microscopy
Standardization
Students
Tubes (components)
Deutsche Industrie Norm (DIN)
Japanese Industry Standards (JIS)
Parfocalization
Microscopes
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01430807_v26_n6_p1101_Simon
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01430807_v26_n6_p1101_Simon
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spelling todo:paper_01430807_v26_n6_p1101_Simon2023-10-03T14:59:13Z The compound microscope: Optical tube length or parfocalization? Simon, J.M. Comastri, S.A. Optical microscopy Standardization Students Tubes (components) Deutsche Industrie Norm (DIN) Japanese Industry Standards (JIS) Parfocalization Microscopes In various well-known textbooks for undergraduate students of physics, the compound microscope is described as having a standardized 'optical tube length'. On the other hand, in order to fulfil the parfocalization condition required by the human visual system to understand the relation between what is viewed with and without the microscope, the distance between the object and its image through the objective must remain constant as objectives are interchanged. In this paper, we show that these two requirements are not compatible in microscopes containing a revolver with various objectives and that the 'optical tube length' (which differs from the mechanical tube length) cannot be standardized. Moreover, we consider the Deutsche Industrie Norm (DIN) and the Japanese Industry Standards (JIS) norms employed in the microscope industry for standardization of the object-to-intermediate image distance, the parfocal distance and the mechanical tube length. © 2005 IOP Publishing Ltd. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01430807_v26_n6_p1101_Simon
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Optical microscopy
Standardization
Students
Tubes (components)
Deutsche Industrie Norm (DIN)
Japanese Industry Standards (JIS)
Parfocalization
Microscopes
spellingShingle Optical microscopy
Standardization
Students
Tubes (components)
Deutsche Industrie Norm (DIN)
Japanese Industry Standards (JIS)
Parfocalization
Microscopes
Simon, J.M.
Comastri, S.A.
The compound microscope: Optical tube length or parfocalization?
topic_facet Optical microscopy
Standardization
Students
Tubes (components)
Deutsche Industrie Norm (DIN)
Japanese Industry Standards (JIS)
Parfocalization
Microscopes
description In various well-known textbooks for undergraduate students of physics, the compound microscope is described as having a standardized 'optical tube length'. On the other hand, in order to fulfil the parfocalization condition required by the human visual system to understand the relation between what is viewed with and without the microscope, the distance between the object and its image through the objective must remain constant as objectives are interchanged. In this paper, we show that these two requirements are not compatible in microscopes containing a revolver with various objectives and that the 'optical tube length' (which differs from the mechanical tube length) cannot be standardized. Moreover, we consider the Deutsche Industrie Norm (DIN) and the Japanese Industry Standards (JIS) norms employed in the microscope industry for standardization of the object-to-intermediate image distance, the parfocal distance and the mechanical tube length. © 2005 IOP Publishing Ltd.
format JOUR
author Simon, J.M.
Comastri, S.A.
author_facet Simon, J.M.
Comastri, S.A.
author_sort Simon, J.M.
title The compound microscope: Optical tube length or parfocalization?
title_short The compound microscope: Optical tube length or parfocalization?
title_full The compound microscope: Optical tube length or parfocalization?
title_fullStr The compound microscope: Optical tube length or parfocalization?
title_full_unstemmed The compound microscope: Optical tube length or parfocalization?
title_sort compound microscope: optical tube length or parfocalization?
url http://hdl.handle.net/20.500.12110/paper_01430807_v26_n6_p1101_Simon
work_keys_str_mv AT simonjm thecompoundmicroscopeopticaltubelengthorparfocalization
AT comastrisa thecompoundmicroscopeopticaltubelengthorparfocalization
AT simonjm compoundmicroscopeopticaltubelengthorparfocalization
AT comastrisa compoundmicroscopeopticaltubelengthorparfocalization
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