ISO 19012-1:2013
(Main)Microscopes — Designation of microscope objectives — Part 1: Flatness of field/Plan
Microscopes — Designation of microscope objectives — Part 1: Flatness of field/Plan
ISO 19012-1:2013 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 19012-1:2013 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.
Microscopes — Désignation des objectifs de microscope — Partie 1: Planéité du champ/Plan
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 19012-1
Third edition
2013-05-15
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 19012-1:2013(E)
©
ISO 2013
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ISO 19012-1:2013(E)
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ISO 19012-1:2013(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Indication . 2
4.2 Definition of plan objectives . 2
4.3 Determination of plan field number . 2
Annex A (informative) Depth of field in object space calculated by Berek’s formula .4
Bibliography . 7
© ISO 2013 – All rights reserved iii
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ISO 19012-1:2013(E)
Foreword
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The committee responsible for this document is ISO/TC 172, Optics and photonics, Subcommittee SC 5,
Microscopes and endoscopes.
This third edition cancels and replaces the second edi
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