ISO 19012-1:2011
(Main)Microscopes — Designation of microscope objectives — Part 1: Flatness of field/Plan
Microscopes — Designation of microscope objectives — Part 1: Flatness of field/Plan
ISO 19012-1:2011 specifies the use of the marking "Plan" on microscope objectives, and defines the diameter of the sharp region of the primary image of a flat object surface. ISO 19012-1:2011 applies to visual observation using the combination of objective lens, tube lens and eyepiece, as specified by the manufacturer.
Microscopes — Désignation des objectifs de microscope — Partie 1: Planéité du champ/Plan
General Information
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 19012-1
Second edition
2011-07-01
Microscopes — Designation of
microscope objectives —
Part 1:
Flatness of field/Plan
Microscopes — Désignation des objectifs de microscope —
Partie 1: Planéité du champ/Plan
Reference number
ISO 19012-1:2011(E)
©
ISO 2011
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ISO 19012-1:2011(E)
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ISO 19012-1:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 19012-1 was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 5,
Microscopes and endoscopes.
This second edition cancels and replaces the first edition (ISO 19012-1:2007), which has undergone a minor
revision to amend the transition period specified in 4.1.
ISO 19012 consists of the following parts, under the general title Microscopes — Designation of microscope
objectives:
⎯ Part 1: Flatness of field/Plan
⎯ Part 2: Chromatic correction
© ISO 2011 – All rights reserved iii
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INTERNATIONAL STANDARD ISO 19012-1:2011(E)
Microscopes — Designation of microscope objectives —
Part 1:
Flatness of field/Plan
1 Scope
This part of ISO 19012 specifies the use of the marking “Plan” on microscope objectives, and defines the
diameter of the sharp region of the primary image of a flat object surface. This part of ISO 19012 applies to
visual observation using the combination of objective lens, tube lens and eyepiece, as specified by the
manufacturer.
This marking is consistent with ISO 8578.
NOTE The flatness of the image field does not imply any degree of correction for other aberrations (ISO 10934-1).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 10934-1, Optics and optical instruments — Vocabulary for microscopy — Part 1: Light microscopy
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 10934-1 apply, together with the
following.
3.1
tangential structured object
object containing short lines perpendicular to the radii of the object field
3.2
tangential image surface
surface on which all tangential structured objects are focused and sharply imaged in the primary image space
subject to no aberrations other than astigmatism
3.3
sagittal structured object
object containing short lines parallel to the radii of the object field
3.4
sagittal image surface
surface on which all sagittal structured objects are focused and sharply imaged in the primary image space
subject to no aberrations other than astigmatism
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ISO 19012-1:2011(E)
3.5
astigmatic difference
dimensional difference along the optical axis in the tangential plane between the tangential and sagittal image
surfaces
3.6
plan field number
PFN
number which specifies the diameter, in millimetres, of the sharp region of the primary image of a flat object
surface
3.7
objective field number
OFN
maximum field of view number of the eyepiece for which the objective is designed to be used
3.8
plan field ratio
PFR
ratio of the plan field number to the objec
...
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