Personal protective equipment - Test methods for sunglasses and related eyewear (ISO 12311:2013, Corrected version 2014-08-15)

ISO 12311:2012 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 shown to be equivalent.

Persönliche Schutzausrüstung - Prüfverfahren für Sonnenbrillen und ähnlichen Augenschutz (ISO 12311:2013)

Diese Internationale Norm beschreibt die Prüfmethoden, um die nötigen Messungen durchzuführen, die nach ISO 12312-1 Eye and face protection - Sunglasses and related eyewear - Part 1: Sunglasses for general use nötig sind.
Diese Prüfmethoden sind Referenzmethoden. Andere Prüfverfahren dürfen verwendet werden, falls deren Gleichwertigkeit nachgewiesen wurde.

Équipement de protection individuelle - Méthodes d'essai pour lunettes de soleil et articles de lunetterie associés (ISO 12311:2013, Version corrigée 2014-08-15)

L'ISO 12311:2013 spécifie les méthodes d'essai de référence permettant de déterminer les propriétés des lunettes de soleil indiquées dans l'ISO 12312 (toutes les parties). Elle s'applique à toutes les lunettes de soleil et aux articles de lunetterie associés.
D'autres méthodes d'essai peuvent être utilisées s'il est démontré qu'elles sont équivalentes.

Osebna varovalna oprema - Preskusne metode za sončna očala in podobno opremo (ISO 12311:2013)

Ta mednarodni standard določa referenčne preskusne metode za ugotavljanje lastnosti sončnih očal iz standarda ISO 12312 (vsi deli). Uporablja se za vsa sončna očala in podobna očala. Uporabljajo se lahko druge preskusne metode, če so dokazano enakovredne.

General Information

Status
Published
Publication Date
06-Aug-2013
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
07-Aug-2013
Completion Date
07-Aug-2013

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SLOVENSKI STANDARD
SIST EN ISO 12311:2013
01-oktober-2013
2VHEQDYDURYDOQDRSUHPD3UHVNXVQHPHWRGH]DVRQþQDRþDODLQSRGREQR
RSUHPR ,62

Personal protective equipment - Test methods for sunglasses and related eyewear (ISO

12311:2013)
Persönliche Schutzausrüstung - Prüfverfahren für Sonnenbrillen und ähnlichen
Augenschutz (ISO 12311:2013)

Équipement de protection individuelle - Méthodes d'essai pour lunettes de soleil et

articles de lunetterie associés (ISO 12311:2013)
Ta slovenski standard je istoveten z: EN ISO 12311:2013
ICS:
11.040.70 Oftalmološka oprema Ophthalmic equipment
13.340.20 Varovalna oprema za glavo Head protective equipment
SIST EN ISO 12311:2013 en

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

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SIST EN ISO 12311:2013
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SIST EN ISO 12311:2013
EUROPEAN STANDARD
EN ISO 12311
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2013
ICS 13.340.20
English Version
Personal protective equipment - Test methods for sunglasses
and related eyewear (ISO 12311:2013)

Équipement de protection individuelle - Méthodes d'essai Persönliche Schutzausrüstung - Prüfverfahren für

pour lunettes de soleil et articles de lunetterie associés Sonnenbrillen und ähnlichen Augenschutz (ISO

(ISO 12311:2013) 12311:2013)
This European Standard was approved by CEN on 30 June 2013.

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, 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

© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12311:2013: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 12311:2013
EN ISO 12311:2013 (E)
Contents Page

Foreword ..............................................................................................................................................................3

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of EU Directive 89/686/EEC .........................................................................................4

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SIST EN ISO 12311:2013
EN ISO 12311:2013 (E)
Foreword

This document (EN ISO 12311:2013) has been prepared by Technical Committee ISO/TC 94 “Personal safety

- Protective clothing and equipment” in collaboration with Technical Committee CEN/TC 85 “Eye protective

equipment” the secretariat of which is held by AFNOR.

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 2014, and conflicting national standards shall be withdrawn

at the latest by February 2014.

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

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive.

For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.

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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

Endorsement notice

The text of ISO 12311:2013 has been approved by CEN as EN ISO 12311:2013 without any modification.

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SIST EN ISO 12311:2013
EN ISO 12311:2013 (E)
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 89/686/EEC

This European Standard has been prepared under a mandate given to CEN by the European Commission

and the European Free Trade Association and supports essential requirements of the EU Directive

89/686/EEC on PPE.

Once this standard is cited in the Official Journal of the European Communities under that Directive and has

been implemented as a national standard in at least one Member State, compliance with the clauses of this

standard, together with the relevant requirements given in the product standards, confers within the limits of

the scope of those standards, a presumption of conformity with the corresponding Essential Requirements of

that Directive and associated EFTA regulations.

WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling within

the scope of this standard
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SIST EN ISO 12311:2013
INTERNATIONAL ISO
STANDARD 12311
First edition
2013-08-01
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
Reference number
ISO 12311:2013(E)
ISO 2013
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SIST EN ISO 12311:2013
ISO 12311:2013(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013

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
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 2013 – All rights reserved
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SIST EN ISO 12311:2013
ISO 12311:2013(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

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

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

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

4 Prerequisites ............................................................................................................................................................................................................ 1

5 General test requirements ......................................................................................................................................................................... 2

6 Test methods for assessing the construction and materials ................................................................................... 2

6.1 Prior assessment of construction, marking and information ......................................................................... 2

6.2 Test method for assessment of filter material and surface quality............................................................ 2

7 Test methods for measuring spectrophotometric properties .............................................................................. 3

7.1 Measurement of spectral transmittance τ(λ)............................................................................................................... 3

7.2 Measurement of uniformity of luminous transmittance .................................................................................... 4

7.3 Calculation of ultraviolet transmittance ........................................................................................................................... 7

7.4 Calculation of solar blue-light transmittance τ .......................................................................................................

sb 8

7.5 Calculation of solar IR transmittance τ ........................................................................................................................

SIR 9

7.6 Measurement of absolute spectral reflectance ρ(λ) ............................................................................................... 9

7.7 Absolute luminous reflectance ρ ........................................................................................................................................

V 10

7.8 Calculation of relative visual attenuation quotient for signal light detection Q ...............

signal 11

7.9 Wide angle scatter .............................................................................................................................................................................11

7.10 Polarizing filters ..................................................................................................................................................................................14

7.11 Photochromic filters ........................................................................................................................................................................17

8 Test methods for measuring optical properties ...............................................................................................................19

8.1 Test method for spherical, astigmatic and prismatic refractive powers ............................................19

8.2 Test method for the prism imbalance of complete sunglasses or filters covering

both eyes ...................................................................................................................................................................................................23

8.3 Test method for local variations in refractive power ..........................................................................................25

9 Test methods for mechanical properties .................................................................................................................................30

9.1 Test method for minimum robustness of filters......................................................................................................30

9.2 Test method for impact resistance of filters, strength level 1 .....................................................................33

9.3 Test method for impact resistance of sunglasses, strength level 1 .........................................................35

9.4 Test method for impact resistance of sunglasses, strength level 2 .........................................................36

9.5 Test method for impact resistance of sunglasses, strength level 3 .........................................................37

9.6 Test method for frame deformation and filter retention .................................................................................39

9.7 Test method for increased endurance of sunglasses ...........................................................................................42

9.8 Test method for resistance to solar radiation ...........................................................................................................46

9.9 Test method for resistance to ignition .............................................................................................................................48

9.10 Test for resistance to perspiration of the sunglass frame ...............................................................................48

Annex A (normative) Application of uncertainty of measurement ...................................................................................52

Annex B (informative) Sources of uncertainty in spectrophotometry and their estimation

and control ...............................................................................................................................................................................................................54

Annex C (informative) Definitions in summations form ...............................................................................................................61

Annex D (normative) Product of the energy distribution of Standard Illuminant D65 as specified

in ISO 11664-2 and the spectral visibility function of the average human eye for daylight

vision as specified in ISO 11664-1 ..................................................................................................................................................65

Annex E (normative) Spectral functions for the calculation of solar UV and solar blue light

transmittance values .....................................................................................................................................................................................66

Annex F (normative) Spectral distribution of solar irradiance in the infrared spectrum for the

[7]

calculation of the solar infrared transmittance ..........................................................................................................68

© ISO 2013 – All rights reserved iii
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SIST EN ISO 12311:2013
ISO 12311:2013(E)

Annex G (normative) Reference test headforms ...................................................................................................................................70

Annex H (normative) Spectral distribution of radiation in incandescent signal lights weighted by

the sensitivity of the human eye V(λ)...........................................................................................................................................72

Annex I (informative) Spectral distribution of radiation in LED signal lights weighted by the

sensitivity of the human eye V(λ) .....................................................................................................................................................75

Annex J (normative) Long wavelength pass filter ................................................................................................................................78

Annex K (informative) Method of variable distance for the calibration of the telescope ..........................82

Annex L (normative) Method to correct transmittance for variations in thickness of the filter ........84

Bibliography .............................................................................................................................................................................................................................85

iv © ISO 2013 – All rights reserved
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SIST EN ISO 12311:2013
ISO 12311:2013(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. 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. 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.

The committee responsible for this document is ISO/TC 94, Personal safety — Protective clothing and

equipment, Subcommittee SC 6, Eye and face protection.
© ISO 2013 – All rights reserved v
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SIST EN ISO 12311:2013
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SIST EN ISO 12311:2013
INTERNATIONAL STANDARD ISO 12311:2013(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, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties

ISO 48, Rubber, vulcanized or thermoplastic — Determination of hardness (hardness between 10 IRHD

and 100 IRHD)
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 8596, Ophthalmic optics — Visual acuity testing — Standard optotype and its presentation

ISO 11664-1, Colorimetry — Part 1: CIE standard colorimetric observers
ISO 11664-2, Colorimetry — Part 2: CIE standard illuminants

ISO 12312-1:2013, Eye and face protection — Sunglasses and related eyewear — Part 1: Sunglasses for

general use

ISO/IEC Guide 98-3:2008, Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in

measurement (GUM:1995)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 4007 apply.

4 Prerequisites

The following parameters shall be specified prior to testing [see ISO 12312 (all parts)]:

— the number of specimens;
— specimen preparation;
— any conditioning prior to testing;
— characteristics to be assessed subjectively (inappropriate);
© ISO 2013 – All rights reserved 1
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SIST EN ISO 12311:2013
ISO 12311:2013(E)
— pass/fail criteria.
5 General test requirements

Unless otherwise specified, the values stated in this International Standard 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

± 1 °C. Relative humidity shall be maintained at (50 ± 20) %.

Unless otherwise specified, the filters shall be tested at the reference points as defined in ISO 4007.

6 Test methods for assessing the construction and materials
6.1 Prior assessment of construction, marking and information

Prior to applying the test methods, a visual inspection shall be carried out with normal or corrected vision,

without magnification. Marking and information supplied by the manufacturer and safety data sheets (if

applicable) or declaration relevant to the materials used in its construction shall also be assessed.

6.2 Test method for assessment of filter material and surface quality
6.2.1 Principle
The quality of the filter material and surface is assessed by visual inspection.
6.2.2 Apparatus
A suitable apparatus is shown in Figure 1.
Dimensions in millimetres
4 3
400
Key
1 lamp
2 adjustable opaque dull black mask
3 near vision distance (≈300)
4 dull black background (200 × 360)

Figure 1 — Arrangement of apparatus for assessment of quality of material and surface

2 © ISO 2013 – All rights reserved
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SIST EN ISO 12311:2013
ISO 12311:2013(E)
6.2.3 Test procedure

Carry out the assessment of the quality of material and surface by visual inspection with the aid of a

“light box” or illuminated grid.

NOTE One method of inspection in current use consists of an illuminated grid as a background to be viewed

through the filter which is held at various distances from the eye. Another method is to illuminate the filter by

means of a fluorescent lamp mounted within a dull black chamber and with the amount of illumination adjusted

by means of an adjustable opaque black mask. A suitable arrangement is shown in Figure 1.

6.2.4 Verification and test report

Except for a marginal area 5 mm wide at the edge of the eye protector, any significant defects likely to

impair vision in use shall be recorded in the verification and test report.
7 Test methods for measuring spectrophotometric properties
7.1 Measurement of spectral transmittance τ(λ)
7.1.1 Spectral transmittance
7.1.1.1 General

Test methods shall be used which have relative uncertainties in spectral transmittance less than or

equal to those given in Table 1.
Table 1 — Relative uncertainty of measured spectral transmittance
Spectral transmittance value
Uncertainty
Less than % to %
100 17,8 ±2 absolute
17,8 0,44 ±10 relative
0,44 0,023 ±15 relative
0,023 0,0012 ±20 relative
0,0012 0,000023 ±30 relative

The general methods of evaluating the components of uncertainty are set out in ISO/IEC Guide 98-

3. Annex A shows how uncertainty of measurement is to be applied in the reporting of results and

compliance and Annex B is a guide to the sources of uncertainty in spectrophotometry, their minimization

and evaluation.

The location and direction of measurement of transmittance shall be as specified in ISO 12312-1. If the

measurements are not made normal to the surface of the filter, then particular attention should be paid

to the effects of beam displacement (see Annex B). If the direction of measurement is not specified then

it shall be measured normal to the surface of the filter when unmounted.

Calculations shall be carried out at not more than 5 nm intervals (∆λ = 5 nm) in the ultraviolet-visible

region (280 nm to 780 nm) and not more than 10 nm in the infrared region (780 nm to 2 000 nm). The

necessary data at these intervals are provided in Annexes D, E, F, H and I.
7.1.1.2 Test procedure

Place the filter in order to follow the location and direction of measurement of transmittance as specified

in ISO 12312-1.
© ISO 2013 – All rights reserved 3
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SIST EN ISO 12311:2013
ISO 12311:2013(E)
7.1.2 Calculations of luminous transmittance τ

Luminous transmittance is calculated as a percentage from the spectral transmittances and with

reference to a standard observer and a source or illuminant. For the purposes of this International

Standard all calculations use the CIE 2° Standard Observer [ISO 11664-1 and CIE Standard Illuminant

D65 (ISO 11664-2)].
780
τλ()⋅⋅SV()λλ()⋅ dλ
∫ D65
380
τ =×100 (1)
780
SV()λλ⋅⋅() dλ
D65
380
where
λ is the wavelength of the light in nanometres;
τ(λ) is the spectral transmittance of the filter;
V(λ) is the spectral luminous efficiency function for photopic vision;

S (λ) is the spectral distribution of radiation of CIE Standard Illuminant D65 (see ISO 11664-2).

D65
The values of S (λ).V(λ) are given in Annex D.
D65

NOTE These calculations are normally carried out as summations and not as integrations. The equivalent

summations are provided in Annex C.
7.2 Measurement of uniformity of luminous transmittance
7.2.1 Unmounted filters covering one eye
7.2.1.1 Test method

Locate the defined reference point defined in ISO 4007. Determine a circular area around the reference

point with diameter d calculated as follows (see Figure 2):

a) for filters equal to or greater than 50 mm in vertical depth at the reference point, d = (40,0 ± 0,5) mm;

b) for filters less than 50 mm in vertical depth at the reference point, d = [vertical depth of filter

(h) - 10 ± 0,5] mm.

A 5 mm wide portion around the edge of the filter shall be excluded from this circular area.

Scan this circular area with a 5 mm nominal diameter light beam white light or a narrow spectral band

with a maximum spectral energy at (555 ± 25) nm and measure the luminous transmittance with a

detector whose spectral responsivity approximates that of the CIE 2° Standard Observer (ISO 11664-1).

The effects of displacement of the light beam by any prismatic effect of the filter (see B.3.4.1) shall be

compensated for, and variations in thickness shall be corrected as in Annex L.

For filters with bands or gradients of different luminous transmittance, the requirement for variations

in luminous transmittance applies in this circular area but perpendicular to the gradient (see Figure 2).

Two example scans perpendicular to the gradient are shown in Figure 2.
4 © ISO 2013 – All rights reserved
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SIST EN ISO 12311:2013
ISO 12311:2013(E)
Dimensions in millimetres
a) d = (40 ±0,5)
b) d = ((h-10) ±0,5)
Key
1 light beam 5 mm diameter
2 reference point
3 geometric or boxed centre

Figure 2 — Luminous transmittance uniformity measurement for filters with bands or

gradients of different luminous transmittance

The filter and the light beam are positioned so that the incident light falls normally on the surface of the

filter at the reference point or parallel to that direction at other locations on the filter.

Measure and record the maximum value of luminous transmittance τ , and the minimum value of

vmax
luminous transmittance τ .
vmin
7.2.1.2 Calculations
Calculate the value of ∆ as percentage, from the following formulae:
()ττ−
vmax vmin
Δ =×100 (2)
vmax
where
τ is the maximum value of luminous transmittance;
vmax
τ is the minimum value of luminous transmittance.
vmin
7.2.1.3 Test report
Record Δ as the uniformity of luminous transmittance.
7.2.2 Mounted filters and unmounted filters covering both eyes
7.2.2.1 Test method

Locate the defined reference points defined in ISO 4007. Define two circular areas around the reference

points with diameter d, calculated as follows:
© ISO 2013 – All rights reserved 5
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SIST EN ISO 12311:2013
ISO 12311:2013(E)

Circular areas are determined around each of these centres with diameters d, calculated as follows:

a) for filters equal to or greater than 50 mm in vertical depth at the reference point, d = (40,0 ± 0,5) mm;

b) for filters less than 50 mm in vertical depth at the reference point, d = [vertical depth of filter

(h) - 10 ± 0,5] mm.

A 5 mm wide portion around the edge of the filter shall be excluded from this circular area.

Scan this circular area with a 5 mm nominal diameter light beam white light or a narrow spectral band

with a maximum spectral energy at (555 ± 25) nm and measure the luminous transmittance with a

detector whose spectral responsivity approximates that of the CIE 2° Standard Observer (ISO 11664-1).

The effects of displacement of the light beam by the any prismatic effect of the filter (see B.3.4.1) shall be

compensated for and variations in thickness shall be corrected as in Annex L.

For filters with bands or gradients of different luminous transmittance, assessments of variations in

luminous transmittance shall be for sections parallel to the line joining the reference points.

Measure and record the value of
...

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