EN ISO 8980-3:2022/A1:2026
(Amendment)Ophthalmic optics - Uncut finished spectacle lenses - Part 3: Transmittance specifications and test methods - Amendment 1 (ISO 8980 3:2022/Amd 1:2026)
- Status
- Published
- Publication Date
- 18-Aug-2026
- Technical Committee
- CEN/TC 170 - Ophthalmic optics
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 19-Aug-2026
- Completion Date
- 19-Aug-2026
EN ISO 8980-3:2022/A1:2026 is a CEN amendment to EN ISO 8980-3:2022 for ophthalmic optics. It updates the transmittance specifications and test methods for uncut, unmounted finished spectacle lenses, with added detail for claimed wavelength cut and how that claim is checked and reported. Manufacturers, test laboratories, and buyers use it when transmittance performance needs to be stated and verified in a consistent way.
What does EN ISO 8980-3:2022/A1:2026 specify?
EN ISO 8980-3:2022/A1:2026 modifies the European Standard EN ISO 8980-3:2022 for uncut finished spectacle lenses. Its focus is the transmittance properties of lenses, including attenuation of solar radiation, and the way those properties are claimed, measured, and declared.
The amendment changes the scope wording, adds a new defined term, introduces a new requirement for claimed wavelength cut, updates measurement uncertainty rules and instrument conditions, revises the information supplied by the manufacturer or supplier, and adds informative Annex G.
| Annex | What it covers |
|---|---|
| Annex G | Parameters affecting the measurement of wavelength cut |
What are the key requirements of EN ISO 8980-3:2022/A1:2026?
EN ISO 8980-3:2022/A1:2026 mainly tightens how wavelength cut claims are made and verified, and it gives more specific measurement conditions. For a reader, the practical effect is that a claim is not just a label - it needs supporting measurement under defined conditions.
Claimed wavelength cut
Clause 6.7 says that when a lens is claimed to have a specific wavelength cut, the claim has to meet the stated requirement for the nominated wavelength. In practice, this means the supplier needs measured spectral transmittance data that support the advertised cut-off value.
For such lenses, the spectral transmittance measured according to 7.2 must be below 5.0% at the nominated wavelength, and below 1.0% for all wavelengths from 280 nm up to 10 nm shorter than that wavelength. After ultraviolet irradiation as specified in 7.7, the claimed performance still has to be satisfied. That matters because the claim must remain valid after a durability-type exposure.
Measurement uncertainty
Clause 7.2.1 replaces the uncertainty limits for spectral transmittance measurements. The amendment sets separate limits above 20%, in the range from 20% down to 5%, and below 5%, all at a 95% confidence level. In practice, labs need to check that their method and instrument can meet these uncertainty levels before using the results for claims or acceptance.
Test method for wavelength cut claims
Clause 7.2.2 requires a spectrophotometer or equivalent device capable of spectral transmittance measurement with relative uncertainty at or below 10% and wavelength uncertainty within ±1.0 nm. The spectral resolution must not exceed 1 nm, the instrument must operate from 280 nm to 780 nm, and the spectral bandwidth must not exceed 2 nm FWHM. This is what keeps results comparable between instruments and avoids over-reading a lens cutoff.
The lens used for the measurement is a plano lens of 2 mm thickness, unless another thickness is stated. The measurement is made at the reference point with the beam normal to the front surface. For a test lab, this fixes the sample setup and reduces variation caused by geometry.
Information supplied with the lens
Clause 8 broadens how required information may be supplied. The manufacturer or supplier may provide it on the package, in an accompanying document, or in other separate information, including digital forms such as a QR code or data matrix code. The declared information now includes claimed absorption or transmittance properties in accordance with 6.6 and/or 6.7.
Annex G
Annex G gives background on why lens geometry and spectrophotometer configuration affect wavelength cut results. It explains, in practical terms, why the specified thickness, wavelength range, and instrument characteristics are needed for fair comparison.
What terms does EN ISO 8980-3:2022/A1:2026 define?
- Wavelength cut - the lowest wavelength at which the spectral transmittance rises to a specified level.
- Spectral transmittance - the amount of light transmitted at each wavelength, which is the basis for the wavelength cut claim.
- Visual attenuation coefficient - the calculated measure referenced in Clause 7.3 for describing how the lens reduces visible light.
- FWHM (full width at half maximum) - the spectrophotometer bandwidth limit used to control the sharpness of the measurement.
- UV (ultraviolet) irradiation - the exposure used in the verification step to check that the wavelength cut claim remains valid.
- Plano lens - a lens used in the measurement setup with no optical power, here specified at 2 mm thickness unless otherwise stated.
Who uses EN ISO 8980-3:2022/A1:2026?
EN ISO 8980-3:2022/A1:2026 is used by manufacturers and suppliers of finished spectacle lenses, test laboratories, quality control teams, and conformity assessment bodies working in ophthalmic optics. It is also useful for buyers and specifiers who need to check whether a lens’s transmittance or wavelength cut claim is supported by a defined test method. In practice, it supports product declaration, incoming inspection, and technical comparison of lenses.
What changed in EN ISO 8980-3:2022/A1:2026 from the previous edition?
EN ISO 8980-3:2022/A1:2026 modifies EN ISO 8980-3:2022 by making these changes:
- the scope now refers to requirements and claims for transmittance properties
- Clause 3 adds the term wavelength cut
- Clause 6.7 adds requirements for claimed wavelength cut
- Clause 7.2 updates measurement uncertainty requirements for spectral transmittance
- Clause 7.2.2 adds detailed conditions for wavelength cut measurements
- Clause 8 expands how the required information may be supplied
- Annex G is added as informative background on wavelength cut measurement
Which standards are used with EN ISO 8980-3:2022/A1:2026?
- ISO 18526-2:2020, Annex B - gives specific advice on uncertainty evaluation for lenses.
- ISO/IEC Guide 98-3 - provides general guidance on evaluating measurement uncertainty.
- EN ISO 8980-3:2022 - is the base European Standard that this amendment modifies.
What does the EN ISO 8980-3:2022/A1:2026 document contain?
EN ISO 8980-3:2022/A1:2026 contains targeted textual amendments rather than a full standalone technical specification. It changes the scope wording, adds a definition, inserts a new requirement section for claimed wavelength cut, revises the measurement uncertainty and instrument setup requirements, and updates the declaration of product information.
The document also includes an informative Annex G. That annex gives background on the factors that affect wavelength cut measurement, including lens thickness, spectrophotometer bandwidth, stray light, and inter-instrument variability. For testing and product support teams, this helps explain why the method is set up as it is and why consistent instrumentation matters.
Relations
- Effective Date
- 12-Feb-2026
- Effective Date
- 19-Jul-2023
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Frequently Asked Questions
EN ISO 8980-3:2022/A1:2026 is a amendment published by the European Committee for Standardization (CEN). Its full title is "Ophthalmic optics - Uncut finished spectacle lenses - Part 3: Transmittance specifications and test methods - Amendment 1 (ISO 8980 3:2022/Amd 1:2026)". This standard covers: Ophthalmic optics - Uncut finished spectacle lenses - Part 3: Transmittance specifications and test methods - Amendment 1 (ISO 8980 3:2022/Amd 1:2026)
Ophthalmic optics - Uncut finished spectacle lenses - Part 3: Transmittance specifications and test methods - Amendment 1 (ISO 8980 3:2022/Amd 1:2026)
EN ISO 8980-3:2022/A1:2026 is classified under the following ICS (International Classification for Standards) categories: 11.040.70 - Ophthalmic equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 8980-3:2022/A1:2026 has the following relationships with other standards: It is inter standard links to ISO 8980-3:2022/Amd 1:2026, EN ISO 8980-3:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN ISO 8980-3:2022/A1:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2026
Očesna optika - Nebrušena zglajena stekla očal - 3. del: Specifikacije za
prepustnost in preskusne metode - Dopolnilo A1 (ISO 8980 3:2022/Amd 1:2026)
Ophthalmic optics - Uncut finished spectacle lenses - Part 3: Transmittance
specifications and test methods - Amendment 1 (ISO 8980 3:2022/Amd 1:2026)
Augenoptik - Rohkantige fertige Brillengläser - Teil 3: Transmissionsanforderungen und
Prüfverfahren - Änderung 1 (ISO 8980 3:2022/Amd 1:2026)
Optique ophtalmique - Verres de lunettes finis non détourés - Partie 3: Spécifications
relatives au facteur de transmission et méthodes d'essai - Amendement 1 (ISO 8980
3:2022/Amd 1:2026)
Ta slovenski standard je istoveten z: EN ISO 8980-3:2022/A1:2026
ICS:
11.040.70 Oftalmološka oprema Ophthalmic equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 8980-3:2022/A1
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2026
EUROPÄISCHE NORM
ICS 11.040.70
English Version
Ophthalmic optics - Uncut finished spectacle lenses - Part
3: Transmittance specifications and test methods -
Amendment 1 (ISO 8980 3:2022/Amd 1:2026)
Optique ophtalmique - Verres de lunettes finis non Augenoptik - Rohkantige fertige Brillengläser - Teil 3:
détourés - Partie 3: Spécifications relatives au facteur Transmissionsanforderungen und Prüfverfahren -
de transmission et méthodes d'essai - Amendement 1 Änderung 1 (ISO 8980 3:2022/Amd 1:2026)
(ISO 8980 3:2022/Amd 1:2026)
This amendment A1 modifies the European Standard EN ISO 8980-3:2022; it was approved by CEN on 10 August 2026.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant 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 amendment 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8980-3:2022/A1:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 8980-3:2022/A1:2026) 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 Amendment to the European Standard EN ISO 8980-3:2022 shall be given the status of a national
standard, either by publication of an identical text or by endorsement, at the latest by February 2027,
and conflicting national standards shall be withdrawn at the latest by February 2027.
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.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 8980-3:2022/Amd 1:2026 has been approved by CEN as EN ISO 8980-3:2022/A1:2026
without any modification.
International
Standard
ISO 8980-3
Fourth edition
Ophthalmic optics — Uncut finished
2022-06
spectacle lenses —
AMENDMENT 1
Part 3:
2026-08
Transmittance specifications and
test methods
AMENDMENT 1
Optique ophtalmique — Verres de lunettes finis non détourés —
Partie 3: Spécifications relatives au facteur de transmission et
méthodes d'essai
AMENDEMENT 1
Reference number
ISO 8980-3:2022/Amd.1:2026(en) © ISO 2026
ISO 8980-3:2022/Amd.1:2026(en)
© ISO 2026
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ii
ISO 8980-3:2022/Amd.1:2026(en)
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