ISO 12312-1:2022/FDAmd 1

FINAL DRAFT
Amendment
ISO 12312-1:2022/
FDAM 1
ISO/TC 94/SC 6
Eye and face protection —
Secretariat: BSI
Sunglasses and related eyewear —
Voting begins on:
2026-01-21
Part 1:
Sunglasses for general use
Voting terminates on:
2026-03-18
AMENDMENT 1
Protection des yeux et du visage — Lunettes de soleil et articles
de lunetterie associés —
Partie 1: Lunettes de soleil pour usage général
AMENDEMENT 1
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO 12312-1:2022/FDAM 1:2026(en) © ISO 2026

FINAL DRAFT
ISO 12312-1:2022/FDAM 1:2026(en)
Amendment
ISO 12312-1:2022/
FDAM 1
ISO/TC 94/SC 6
Eye and face protection —
Secretariat: BSI
Sunglasses and related eyewear —
Voting begins on:
Part 1:
Sunglasses for general use
Voting terminates on:
AMENDMENT 1
Protection des yeux et du visage — Lunettes de soleil et articles
de lunetterie associés —
Partie 1: Lunettes de soleil pour usage général
AMENDEMENT 1
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2026
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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Published in Switzerland Reference number
ISO 12312-1:2022/FDAM 1:2025(en) © ISO 2025

ii
ISO 12312-1:2022/FDAM 1:2025(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of 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 www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 94, Personal safety — Personal protective
equipment, Subcommittee SC 6, Eye and face protection, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 85, Eye protective equipment, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
NOTE Resulting of the replacement in the proposed revision of ISO 4007 of "Faded state" with "Light state" and
“Darkened state” with “Dark state” this Amendment introduces changes in all paragraph where the word "Faded" and
“Darkened” was used.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iii
ISO 12312-1:2022/FDAM 1:2025(en)
Eye and face protection — Sunglasses and related eyewear —
Part 1:
Sunglasses for general use
AMENDMENT 1
2  Normative references
Replace the existing reference by the following:
“ISO 12311:2023, Personal protective equipment — Test methods for sunglasses and related eyewear”

3.2   Electro-optical filter
Replace “faded” with “light and “darkened” with “dark”

3.3  reaction time
Replace “faded” with “light” and “darkened” with “dark”

3.4  Absorption ratio
Replace “faded” with “light” and “darkened” with “dark”

4.4  Headforms
Delete the existing text and substitute by the following:
"Unless the manufacturer specifies the headform(s) in accordance with ISO 18526-4:2020 that is/
are compatible with the sunglasses, the test methods where (a) headform(s) is/are required shall use
the headform 1-M for adult's sunglasses and (1-C6) or (1-C12) for children's sunglasses as specified in
ISO 18526-4:2020 as the default”

5.1  Test methods
Delete the first paragraph and substitute by the following:
“Transmittance values shall be determined in accordance with ISO 18526-2:2020, Clauses 7, 8, 9 and 10. If
the direction of measurement is not specified, then the direction of measurement shall be normal to the
surface of the test sample at its geometrical centre.”

5.2   Transmittance and filter categories
Replace “faded” with “light” and “darkened” with “dark”

ISO 12312-1:2022/FDAM 1:2025(en)

5.3.1  Uniformity of luminous transmittance
Delete the existing text and substitute by:
“Filters that are intended to be uniformly tinted shall appear to be visually uniform within a circle
(30 ± 1) mm diameter centred on the reference points and appear to have the same transmittance at the
two reference points when inspected against a white background in accordance with ISO 18526-3:2020, 6.6.
For gradient filters the luminous transmittances shall appear constant in the horizontal direction and have
equal transmittance at the reference points.
Where there is visible non-uniformity, or tilt in case of gradient filters, then, when tested according to
ISO 18526-2:2020, 7.4, the relative difference in the luminous transmittance value between any two points
of the filter within a circle (30 ± 1) mm in diameter centred on the reference point shall not be greater than
15 % (relative to the higher value), except for category 4 where it shall not be greater than 20 %. If a 5 mm
wide portion around the edge of the test sample intrudes into this circular area, then this intrusion shall be
excluded from testing.
The geometric or boxed centre takes the place of the reference point if this is not known.
In the case of mounted gradient filters, this requirement shall be limited to sections parallel to the line
connecting the two reference points.
For mounted filters, the relative difference between the luminous transmittance value of the filters at the
reference point for the right and left eyes shall not exceed 20 % for gradient-tinted filters and 15 % for all
other types (relative to the lighter filter).
Changes of luminous transmittance that are caused by thickness variations due to the design of the filter are
permitted. For verification, the test method in ISO 18526-2:2020, 7.4.1.4, shall be used.
The uniformity requirements for electro-optical sunglass filters in the darkened state are given in 5.3.4.4.5”

5.3.4.1   Photochromic filters
Replace “faded” with “light” and “darkened” with “dark”

5.3.4.2   Polarizing filters
Delete the first phrase and substitute by the following:
"If the filters in the sunglasses are claimed to be polarizing, then they shall be tested in accordance with
ISO 18526-2:2020, Clause 15”.
5.3.4.4.1  General
Replace “faded” with “light” and “darkened” with “dark”

5.3.4.4.3  Reaction time
Replace “faded” with “light” and “darkened” with “dark”

5.3.4.4.4  Photosensitive seizures

ISO 12312-1:2022/FDAM 1:2025(en)
The entire paragraph was deleted and moved to Annex B.
The subsequent subclauses shall be renumbered: "5.3.4.4.5" becomes "5.3.4.4.4" and "5.3.4.4.6" becomes
"5.3.4.4.5".
5.3.4.4.5  Narrow angle scatter
Replace “faded” with “light” and “darkened” with “dark”

5.3.5.1.1 and 5.3.5.1.2
Add at the end of the text the following sentence:
“The calculation shall be made according to ISO 18526-2:2020, 9.1”

5.3.5.2.2 and 5.3.5.2.3
Add at the end of the text the following sentence:
“The calculation shall be made according to ISO 18526-2:2020, 8.3”

5.3.5.2.4 and 5.3.5.2.5
Add at the end of the text the following sentence:
“The calculation shall be made according to ISO 18526-2:2020, 8.4”

5.3.5.2.6 and 5.3.5.2.7
Add at the end of the text the following sentence:
“The calculation shall be made according to ISO 18526-2:2020, 8.5”

5.3.5.3   Antireflective coated sunglasses
Replace “faded” with “light” and “darkened” with “dark”

6.3  Prism imbalance (relative prism error)
In the first paragraph replace the existing cross-reference by the following one:
“The complete sunglass shall be tested in the “as-worn” position according to ISO 18526-1:2020, 6.2.”

7.1   Minimum robustness of filters
Delete the paragraph a) and substitute by the following:
a) “Filter fracture: A filter is considered to have fractured when
— it cracks through its entire thickness into two or more pieces, or
...