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 2007
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO 2007
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2007 – All rights reserved

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.
ISO 19012 consists of the following parts, under the general title Optics and photonics — Designation of
microscope objectives:
⎯ Part 1: Flatness of field/Plan

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
3.5
astigmatic difference
dimensional difference along optical axis in the tangential plane between the tan
...