ISO 19012-1:2007

INTERNATIONAL ISO
STANDARD 19012-1
First edition
2007-06-01


Optics and photonics — Designation of
microscope objectives —
Part 1:
Flatness of field/Plan
Optique et photonique — Désignation des objectifs de microscope —
Partie 1: Planéité du champ/Plan




Reference number
ISO 19012-1:2007(E)
©
ISO 2007

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ISO 19012-1:2007(E)
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ISO 19012-1:2007(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
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ISO 19012-1 was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 5,
Microscopes and endoscopes.
ISO 19012 consists of the following parts, under the general title Optics and photonics — Designation of
microscope objectives:
⎯ Part 1: Flatness of field/Plan

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INTERNATIONAL STANDARD ISO 19012-1:2007(E)

Optics and photonics — 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 10934-1:2002, 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 from 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 19012-1:2007(E)
3.5
astigmatic difference
dimensional difference along optical axis in the tangential plane between the tan
...