Ophthalmic optics - Uncut finished spectacle lenses - Part 2: Specifications for power-variation lenses (ISO 8980-2:2017)

This document specifies requirements and verification methods for the optical and geometrical
properties for uncut finished power-variation lenses.

Augenoptik - Rohkantige fertige Brillengläser - Teil 2: Anforderungen an Wirkungsvariationsgläser (ISO 8980-2:2017)

Optique ophtalmique - Verres de lunettes finis non détourés - Partie 1: Spécifications pour les verres à variation de puissance (ISO 8980-2:2017)

ISO 8980-2:2017 spécifie les exigences et les méthodes de vérification relatives aux propriétés optiques et géométriques des verres de lunettes finis non détourés à variation de puissance.

Očesna optika - Nebrušena zglajena stekla očal - 2. del: Specifikacije za stekla (ISO 8980-2:2017)

Ta dokument določa zahteve in metode preverjanja za optične in geometrične lastnosti nebrušenih zglajenih stekel s spreminjanjem moči.

General Information

Status
Published
Public Enquiry End Date
19-Jun-2016
Publication Date
14-Feb-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-Oct-2017
Due Date
10-Dec-2017
Completion Date
15-Feb-2018

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SIST EN ISO 8980-2:2018
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SIST EN ISO 8980-2:2004
SIST EN ISO 8980-2:2004/AC:2006

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Ophthalmic optics - Uncut finished spectacle lenses - Part 2: Specifications for power-

variation lenses (ISO 8980-2:2017)
Augenoptik - Rohkantige fertige Brillengläser - Teil 2: Anforderungen an
Wirkungsvariationsgläser (ISO 8980-2:2017)

Optique ophtalmique - Verres de lunettes finis non détourés - Partie 1: Spécifications

pour les verres à variation de puissance (ISO 8980-2:2017)
Ta slovenski standard je istoveten z: EN ISO 8980-2:2017
ICS:
11.040.70 Oftalmološka oprema Ophthalmic equipment
SIST EN ISO 8980-2:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 8980-2:2018
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SIST EN ISO 8980-2:2018
EN ISO 8980-2
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2017
EUROPÄISCHE NORM
ICS 11.040.70 Supersedes EN ISO 8980-2:2004
English Version
Ophthalmic optics - Uncut finished spectacle lenses - Part
2: Specifications for power-variation lenses (ISO 8980-
2:2017)

Optique ophtalmique - Verres de lunettes finis non Augenoptik - Rohkantige fertige Brillengläser - Teil 2:

détourés - Partie 2: Spécifications pour les verres à Anforderungen an Wirkungsvariationsgläser (ISO

variation de puissance (ISO 8980-2:2017) 8980-2:2017)
This European Standard was approved by CEN on 26 May 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8980-2:2017 E

worldwide for CEN national Members.
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SIST EN ISO 8980-2:2018
EN ISO 8980-2:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 8980-2:2018
EN ISO 8980-2:2017 (E)
European foreword

This document (EN ISO 8980-2:2017) has been prepared by Technical Committee ISO/TC 172 "Optics

and photonics" in collaboration with Technical Committee CEN/TC 170 “Ophthalmic optics” the

secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by February 2018, and conflicting national standards

shall be withdrawn at the latest by February 2018.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 8980-2:2004.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 8980-2:2017 has been approved by CEN as EN ISO 8980-2:2017 without any

modification.
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SIST EN ISO 8980-2:2018
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SIST EN ISO 8980-2:2018
INTERNATIONAL ISO
STANDARD 8980-2
Third edition
2017-07
Ophthalmic optics — Uncut finished
spectacle lenses —
Part 2:
Specifications for power-variation
lenses
Optique ophtalmique — Verres de lunettes finis non détourés —
Partie 2: Spécifications pour les verres à variation de puissance
Reference number
ISO 8980-2:2017(E)
ISO 2017
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SIST EN ISO 8980-2:2018
ISO 8980-2:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 8980-2:2018
ISO 8980-2:2017(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Classification ............................................................................................................................................................................................................ 1

5 Requirements .......................................................................................................................................................................................................... 2

5.1 Reference temperature .................................................................................................................................................................... 2

5.2 Optical requirements ......................................................................................................................................................................... 2

5.2.1 General...................................................................................................................................................................................... 2

5.2.2 Back vertex power of power-variation lenses at the primary reference point .......... 2

5.2.3 Direction of the cylinder axis ................................................................................................................................ 2

5.2.4 Variation power (including addition power) .......................................................................................... 3

5.2.5 Prismatic power ............................................................................................................................................................... 3

5.2.6 Prism base setting .......................................................................................................................................................... 3

5.3 Requirements for size and thickness ................................................................................................................................... 4

5.4 Orientation requirement for polarizing lenses ........................................................................................................... 4

6 Verification methods ........................................................................................................................................................................................ 4

6.1 General ........................................................................................................................................................................................................... 4

6.2 Verification method for back vertex power.................................................................................................................... 4

6.3 Verification method for the direction of the cylinder axis................................................................................. 5

6.4 Verification method for prismatic power......................................................................................................................... 5

6.5 Verification method for variation power (including addition power) .................................................... 5

6.5.1 General...................................................................................................................................................................................... 5

6.5.2 Procedure ............................................................................................................................................................................... 5

6.6 Inspection method for material and surface quality .............................................................................................. 5

7 Marking .......................................................................................................................................................................................................................... 5

7.1 Permanent marking ............................................................................................................................................................................ 5

7.2 Optional non-permanent marking ......................................................................................................................................... 6

8 Identification and information .............................................................................................................................................................. 6

9 Reference to this document ...................................................................................................................................................................... 6

Annex A (informative) Material and surface quality............................................................................................................................ 7

Bibliography ................................................................................................................................................................................................................................ 8

© ISO 2017 – All rights reserved iii
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SIST EN ISO 8980-2:2018
ISO 8980-2:2017(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.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO’s adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: w w w . i s o .org/ iso/ foreword .html

This document was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee

SC 7, Ophthalmic optics and instruments.

This third edition cancels and replaces the second edition (ISO 8980-2:2004), which has been technically

revised. It also incorporates the Technical Corrigendum ISO 8980-2:2004/Cor.1:2006.

A list of all parts in the ISO 8980 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved
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SIST EN ISO 8980-2:2018
INTERNATIONAL STANDARD ISO 8980-2:2017(E)
Ophthalmic optics — Uncut finished spectacle lenses —
Part 2:
Specifications for power-variation lenses
1 Scope
This d
...

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