prEN ISO 12311
(Main)Personal protective equipment - Test methods for sunglasses and related eyewear (ISO/DIS 12311:2021)
Personal protective equipment - Test methods for sunglasses and related eyewear (ISO/DIS 12311:2021)
Persönliche Schutzausrüstung - Prüfverfahren für Sonnenbrillen und ähnlichen Augenschutz (ISO/DIS 12311:2021)
Diese Internationale Norm legt Referenzprüfverfahren für die Bestimmung der in ISO 12312 (alle Teile) angegebenen Eigenschaften von Sonnenbrillen fest. Sie ist auf alle Sonnenbrillen und ähnlichen Augenschutz anwendbar.
Andere Prüfverfahren dürfen angewendet werden, sofern ihre Gleichwertigkeit nachgewiesen ist.
Équipement de protection individuelle - Méthodes d'essai pour lunettes de soleil et articles de lunetterie associés (ISO/DIS 12311:2021)
Osebna varovalna oprema - Preskusne metode za sončna očala in podobno opremo (ISO/DIS 12311:2021)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 12311:2022
01-januar-2022
Osebna varovalna oprema - Preskusne metode za sončna očala in podobno
opremo (ISO/DIS 12311:2021)
Personal protective equipment - Test methods for sunglasses and related eyewear
(ISO/DIS 12311:2021)
Persönliche Schutzausrüstung - Prüfverfahren für Sonnenbrillen und ähnlichen
Augenschutz (ISO/DIS 12311:2021)
Équipement de protection individuelle - Méthodes d'essai pour lunettes de soleil et
articles de lunetterie associés (ISO/DIS 12311:2021)
Ta slovenski standard je istoveten z: prEN ISO 12311
ICS:
11.040.70 Oftalmološka oprema Ophthalmic equipment
13.340.20 Varovalna oprema za glavo Head protective equipment
oSIST prEN ISO 12311:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN ISO 12311:2022
---------------------- Page: 2 ----------------------
oSIST prEN ISO 12311:2022
DRAFT INTERNATIONAL STANDARD
ISO/DIS 12311
ISO/TC 94/SC 6 Secretariat: BSI
Voting begins on: Voting terminates on:
2021-11-15 2022-02-07
Personal protective equipment — Test methods for
sunglasses and related eyewear
Équipement de protection individuelle — Méthodes d'essai pour lunettes de soleil et articles de lunetterie
associés
ICS: 13.340.20
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 12311:2021(E)
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 SUPPORTING DOCUMENTATION. © ISO 2021
---------------------- Page: 3 ----------------------
oSIST prEN ISO 12311:2022
ISO/DIS 12311:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 12311:2022
ISO/DIS 12311:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Prerequisites . 1
5 General test requirements . 2
6 Test methods for mechanical properties . 2
6.1 Test method for frame deformation and filter retention . 2
6.1.1 Principle . 2
6.1.2 Apparatus . 2
6.1.3 Procedure . 3
6.1.4 Verification and test report . 4
6.1.5 Uncertainty of measurement . 4
6.2 Test method for increased endurance of sunglasses . 4
6.2.1 Principle . 4
6.2.2 Apparatus . 5
6.2.3 Procedure . 5
6.2.4 Verification and test report . 9
6.2.5 Uncertainty of measurement . 9
6.3 Test for resistance to perspiration of the sunglass frame . 9
6.3.1 Principle . 9
6.3.2 Apparatus and reagents . . 9
6.3.3 Procedure . 10
6.3.4 Verification and test report . 11
Annex A (informative) Application of uncertainty of measurement .13
Annex B (normative) Reference test headforms .15
Annex C (normative) Method to correct transmittance for variations in thickness of the
filter .16
Bibliography .17
iii
© ISO 2021 – All rights reserved
---------------------- Page: 5 ----------------------
oSIST prEN ISO 12311:2022
ISO/DIS 12311:2021(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 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).
This second edition cancels and replaces the first edition (ISO 12311:2013), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— With the publication of the four parts of ISO 18526 in 2020, which provides test methods and
specifications for head forms for the compliance testing of eye protectors, it was deemed unnecessary
to reproduce details of these test methods in ISO 12311. They have therefore been removed. Test
methods that have been retained in this document are those developed originally for testing of
spectacle frames. Corresponding Annexes that supplemented the now deleted test methods have
also been removed.
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.
iv
© ISO 2021 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 12311:2022
DRAFT INTERNATIONAL STANDARD ISO/DIS 12311:2021(E)
Personal protective equipment — Test methods for
sunglasses and related eyewear
1 Scope
This International Standard specifies reference test methods for determining the properties of
sunglasses given in ISO 12312 (all parts). It is applicable to all sunglasses and related eyewear.
Other test methods may be used if proven to be equivalent.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1042:1998, Laboratory glassware — One-mark volumetric flasks
ISO 3696:1987, Water for analytical laboratory use — Specification and test methods
ISO 4007, Personal protective equipment — Eye and face protection — Vocabulary
ISO 18526-4:2020, Eye and face protection — Test methods — Part 4: Headforms
ISO/IEC Guide 98-3:2008, Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in
me a s ur ement (GUM: 1995)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4007 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Prerequisites
The following parameters shall be specified prior to testing [see ISO 12312 (all parts)]:
— the number of test samples;
— test sample preparation;
— any conditioning prior to testing;
— characteristics to be assessed subjectively (if appropriate);
— pass/fail criteria.
1
© ISO 2021 – All rights reserved
---------------------- Page: 7 ----------------------
oSIST prEN ISO 12311:2022
ISO/DIS 12311:2021(E)
5 General test requirements
Unless otherwise specified, the values stated in this document are expressed as nominal values. Except
for temperature limits, values which are not stated as maxima or minima shall be subject to a tolerance
of ± 5 %. Unless otherwise specified, the ambient temperature for testing shall be between 16 °C and
32 °C. Where other temperature limits are specified, they shall be subject to an accuracy of ± 2 °C.
Relative humidity shall be maintained at (50 ± 20) %.
Details of the material of reference test headforms to be used shall be as given in Annex B.
Unless otherwise specified, the filters shall be tested at the reference points as defined in ISO 4007.
The method to correct transmittance measurements for variations in the thickness of filters shall be as
given in Annex C.
6 Test methods for mechanical properties
6.1 Test method for frame deformation and filter retention
6.1.1 Principle
This procedure tests the ability of the complete sunglass to resist deformation and to retain the filters.
6.1.2 Apparatus
6.1.2.1 Overall scheme. The test apparatus consists of a vertically operating annular clamp, a
downward-operating pressure peg and a measuring device. See Figure 1.
6.1.2.2 Annular clamp. The annular clamp (see Figure 1, key item 2) which operates vertically shall
be capable of holding the test sample without twist or slip and have a diameter of (25 ± 2) mm, with
two contact surfaces, E1 and E2, made of a firm elastic material (e.g. polyamide). The clamping surfaces
can be separated at least 10 mm on either side of a horizontal line going through the apparatus. To
accommodate frames with a significant face form angle, the annular clamp shall also be capable of
rotating about a horizontal axis so that the axis of the pressure peg remains perpendicular to the plane
of the unclamped lens at its boxed centre.
6.1.2.3 Pressure peg. The pressure peg (see Figure 1, key item 5) which operates downwards
shall have a diameter of (10 ± 1) mm with an almost hemispherical contact surface. The pressure peg
can travel from at least 10 mm above the horizontal line to not more than 8 mm below. The distance
between the annular clamp and pressure peg is adjustable.
6.1.2.4 Measuring device. The apparatus includes a linear measuring device that is accurate to at
least 0,1 mm.
2
© ISO 2021 – All rights reserved
---------------------- Page: 8 ----------------------
oSIST prEN ISO 12311:2022
ISO/DIS 12311:2021(E)
Dimensions in millimetres
Key
1 measuring device
2 annular clamp
3 direction and point of application of force (maximum 5 N)
4 travelling ring
5 pressure peg
c boxed centre distance (adjustable)
E , E contact surfaces
1 2
a adjustable
Figure 1 — Illustration of frame deformation and filter retention test
6.1.3 Procedure
6.1.3.1 Mount test sample 2 on the device with the sides of the test sample extended and with the
front of the test sample downwards. Clamp the sample within 2 mm of the boxed centre of one test lens
(see Figure 1).
Lower the pressure peg so that it rests on the back surface of the unclamped test lens within 2 mm of its
boxed centre, ensuring that there is no movement of the test lens. Record this as the starting position.
3
© ISO 2021 – All rights reserved
---------------------- Page: 9 ----------------------
oSIST prEN ISO 12311:2022
ISO/DIS 12311:2021(E)
Next, move the pressure peg downwards slowly and smoothly, increasing the force until the first of
either of the following criteria is reached:
a) a maximum force of 5 N;
b) a distance equal to (10 ± 1) % of the boxed centre distance, c (see ISO 8624).
6.1.3.2 If the maximum force of 5 N is insufficient to displace the pressure peg over the distance
specified in 6.1.3.1 b), continue the test but record the displacement that was attained.
Retain the initial displacement for 5 s, then return the pressure peg to its starting position. After a
relaxation period of 20 s, lower the pressure peg again until it just rests on the lens.
6.1.3.3 Determine, in millimetres, the movement, x, of the pressure peg from the starting position
and calculate the percentage deformation using the following formula. Check that the spectacle frame
shows no fracture.
x
f =×100
c
where
f is the percentage deformation;
x is the movement of the pressure peg;
c is the boxed centre distance
6.1.34 The sunglass frames shall be inspected, without the aid of a magnifying lens, by a trained
observer. During the examination, expose the test sample to an illuminance of 1 000 lx to 2 000 lx
and carry out the inspection against a matt black background. Check that neither test lens has been
dislodged wholly or partially from its original location in the groove or mount.
6.1.4 Verification and test report
Report whether the deformation of the sunglass exceeded 2 % of the distance between the reference
points, whether the maximum load of 5 N achieved the distance specified in 9.6.3, whether the frame
shows any fracture or crack and whether either filter has been dislodged wholly or partially from its
original location in the groove or mount.
6.1.5 Uncertainty of measurement
An estimate of the uncertainty of measurement associated with this method of test shall be established
in accordance with ISO/IEC Guide 98-3. The value of this estimate shall not exceed ± 10 % and shall be
applied to the result in accordance with Annex A.
NOTE The use of transfer standards may assist in establishing common uncertainties of measurement
between laboratories.
6.2 Test method for increased endurance of sunglasses
6.2.1 Principle
The test aims to simulate the strains on the sunglass frame, particularly the joints, when putting the
sunglasses on or off. The end of one side
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.