EN ISO 4007:2012

SLOVENSKI STANDARD
oSIST prEN ISO 4007:2009
01-junij-2009
2VHEQDYDURYDOQDRSUHPD9DURYDQMHRþLLQREUD]D6ORYDU,62',6
Personal protective equipment - Eye and face protection - Vocabulary (ISO/DIS
4007:2009)
Persönliche Schutzausrüstung - Augen- und Gesichtsschutz - Wörterbuch (ISO/DIS
4007:2009)
Équipement de protection individuelle - Protection du visage et des yeux - Vocabulaire
(ISO/DIS 4007:2009)
Ta slovenski standard je istoveten z: prEN ISO 4007
ICS:
01.040.13 Varstvo okolja in zdravja. Environment and health
Varnost (Slovarji) protection. Safety
(Vocabularies)
13.340.20 Varovalna oprema za glavo Head protective equipment
oSIST prEN ISO 4007:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 4007:2009
oSIST prEN ISO 4007:2009
EUROPEAN STANDARD
DRAFT
prEN ISO 4007
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2009
ICS 01.040.13; 13.340.20
English Version
Personal protective equipment - Eye and face protection -
Vocabulary (ISO/DIS 4007:2009)
Équipement de protection individuelle - Protection du Persönliche Schutzausrüstung - Augen- und
visage et des yeux - Vocabulaire (ISO/DIS 4007:2009) Gesichtsschutz - Wörterbuch (ISO/DIS 4007:2009)
This draft European Standard is submitted to CEN members for parallel enquiry. It has been drawn up by the Technical Committee
CEN/TC 85.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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 Management Centre has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN ISO 4007:2009: E
worldwide for CEN national Members.

oSIST prEN ISO 4007:2009
prEN ISO 4007:2009 (E)
Contents Page
Foreword .3

oSIST prEN ISO 4007:2009
prEN ISO 4007:2009 (E)
Foreword
This document (prEN ISO 4007:2009) 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 document is currently submitted to the parallel Enquiry.
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 EC Directive(s).
Endorsement notice
The text of ISO/DIS 4007:2009 has been approved by CEN as a prEN ISO 4007:2009 without any
modification.
oSIST prEN ISO 4007:2009
oSIST prEN ISO 4007:2009
DRAFT INTERNATIONAL STANDARD ISO/DIS 4007
ISO/TC 94/SC 6 Secretariat: BSI
Voting begins on: Voting terminates on:
2009-03-05 2009-08-05
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Personal protective equipment — Eye and face protection —
Vocabulary
Équipement de protection individuelle — Protection du visage et des yeux — Vocabulaire
[Revision of first edition (ISO 4007:1977)]
ICS 01.040.13; 13.340.20
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for Standardization (ISO), and
processed under the ISO-lead mode of collaboration as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel
five-month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments received, will be
submitted to a parallel two-month approval vote in ISO and formal vote in CEN.
To expedite distribution, this document is circulated as received from the committee secretariat.
ISO Central Secretariat work of editing and text composition will be undertaken at publication
stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.
THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS 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 NATIONAL REGULATIONS.
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.
©
International Organization for Standardization, 2009

oSIST prEN ISO 4007:2009
ISO/DIS 4007
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ii ISO 2009 – All rights reserved

oSIST prEN ISO 4007:2009
ISO/DIS 4007
Contents Page
Foreword .iv
Introduction.iv
1 Scope.1
2 Normative references.1
3 Terms relating to hazards.2
4 Terms relating to optical radiation and sources of radiation .2
4.1 Terms relating to optical radiation .2
4.2 Terms relating to sources of non-ionising radiation.5
5 Photometric terms.7
6 Terms relating to eye and face protection.11
6.1 General terms .11
6.2 Terms relating to the geometrical properties of eye and face protection.15
6.3 Terms relating to the non-ocular part of eye and face protection .17
6.4 Terms relating to welding protection .18
6.5 Terms relating to secondary oculars .19
7 Terms relating to optical materials.20
8 Terms relating to optical properties of components and oculars.21
9 Terms relating to the optical properties of oculars, excluding transmittance.25
9.1 Terms relating to the oculars .25
9.2 Terms relating to the eye and eye protectors .28
10 Terms relating to filters.29
10.1 General terms .29
10.2 Terms relating to polarized light and polarizing filters .37
10.3 Terms relating to welding filters .39
11 Terms relating to test equipment.41
12 Glossary of abbreviations .43
Annex A (informative) Spectral weighting functions and spectral distributions .45
Index .……………………………………………………………………………………………………………52

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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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 4007 was prepared by Technical Committee ISO/TC 94, Personal safety - Protective clothing and
equipment, Subcommittee SC 6, Eye and face protection.
This second cancels and replaces the first edition (1977), which has been technically revised.
Introduction
This draft Standard draws heavily on EN 165, Personal Eye-protection – Vocabulary, and other European eye
protection standards, for which the Working Group is very grateful.
Where terms and definitions have been copied from other ISO standards, the date of the Standard has been
included so that, if the definition in the original Standard is subsequently revised, there is no confusion as to
which definition is to be used for purposes o Eye and Face Protection.
There is no term and definition for α-blocking wavelength, because there is no agreement at present on what
the definition or requirement should be. It is hoped to add a definition in the near future, and this may be that
selected in the current revision process of ISO 13666 – Ophthalmic Optics – Spectacle lenses - Vocabulary
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DRAFT INTERNATIONAL DRAFT INTERNATIONAL
ISO/DIS 4007
STANDARD
Personal protective equipment — Eye and face protection —
Vocabulary
1 Scope
This International Standard defines and explains the principal terms used in the field of personal eye and face
protection, including those terms used in the various Standards of ISO/TC 94/SC 6.
NOTE This International Standard includes terms copied from the standards cited in clause 2. At the time of
publication of this standard, the quoted terms are identical to those in ISO 8624: 2002, ISO 13666: 1998, CIE 17.4 1987
and ISO/IEC Guide 51. If, due to future revision of these standards, there should be a disagreement between ISO 4007
and ISO 8624, ISO 13666, CIE 17.4 or ISO/IEC Guide 51, then the definitions in the latest version of ISO 8624, ISO
13666, CIE 17.4 or ISO/IEC Guide 51 take precedence.
2 Normative references
The following referenced documents are indispensable for the application 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 48 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100
IRHD)
ISO 472 Plastics - Vocabulary
ISO 8624 Ophthalmic optics – Spectacle frames – Measuring system and terminology
ISO 10012-1: 1992 Quality assurance requirements for measuring equipment -- Part 1: Metrological
confirmation system for measuring equipment (Withdrawn)
ISO 13666 Ophthalmic optics – Spectacle lenses – Vocabulary
CIE 17.4 International Lighting Vocabulary (identical to IEC 60050(845)
ISO/CIE 10526 CIE standard colorimetric illuminants
ISO/CIE 10527 CIE standard colorimetric observers
IEC 60050(845) International Electrotechnical Vocabulary – Chapter 845: Lighting (identical to CIE 17.4)
ISO/IEC Guide 51 Safety aspects – Guidelines for their inclusion in standards
IEC/EN 60825-1 Safety of laser products – Part 1: Equipment classification and requirements
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3 Terms relating to hazards
3.1
safety
sécurité
freedom from unacceptable risk
NOTE The use of the words 'safety' and 'safe' as descriptive adjectives should be avoided because they convey no
useful extra information. In addition, they are likely to be interpreted as an assurance of guaranteed freedom from risk.
The recommended approach is to replace, wherever possible, the words safety and safe by an indication of the objective.
EXAMPLE Use “protective helmet” instead of “safety helmet”.
[ISO/IEC Guide 51: 1999]
3.2
harm
dommage
physical injury or damage to the health of people or damage to property or the environment
[ISO/IEC Guide 51: 1999]
3.3
hazard
phénomène dangereux
potential source of harm
NOTE The term hazard can be qualified in order to define its origin or the nature of the expected harm (e.g. electric
shock hazard, crushing hazard, cutting hazard, toxic hazard, fire hazard, drowning hazard).
[ISO/IEC Guide 51: 1999]
3.4
risk
risque
combination of the probability of occurrence of harm and the severity of that harm
[ISO/IEC Guide 51: 1999]
3.5
reasonably foreseeable misuse
mauvais usage raisonnablement prévisible
use of a product, process or service in a way not intended by the supplier, but which may result from readily
predictable human behaviour
[ISO/IEC Guide 51: 1999]
4 Terms relating to optical radiation and sources of radiation
4.1 Terms relating to optical radiation
4.1.1
optical radiation
optische Strahlung
rayonnement optique
electromagnetic radiation at wavelengths between the region of transition to X rays (λ ≈ 1 nm) and the region
of transition to radio waves (λ ≈ 1 mm)
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[CIE 17.4/IEC 60050: 1987( 845-01-02)]
NOTE This is usually subdivided into the following spectral ranges, with a possible overlap at the longer wavelength
limit of UV:
 ultraviolet radiation UV 1 nm to 380 nm or 400 nm ;
 visible radiation VIS 380 nm to 780 nm ;
 infrared radiation IR 780 nm to 1 mm.
4.1.2
UV-radiation; ultraviolet radiation
UV-Strahlung; Ultraviolett-Strahlung
rayonnement ultraviolet
optical radiation for which the wavelengths are shorter than those for visible radiation.
NOTE 1 For ultraviolet radiation, the range between 1 nm and 400 nm is commonly subdivided into:
 UV-A 315 nm to 400 nm
 UV-B 280 nm to 315 nm
 UV-C 100 nm to 280 nm
[CIE 17.4/IEC 60050: 1987(845 – 01-05)]
 Extreme UV This zone below 100 nm exists in vacuum only and is not applicable to eye and face protection.
Its lower limit is taken as 1 or 10 nm.

NOTE 2 For purposes of sunglasses for general use, the upper limit of UV-A is taken as 380 nm, since the potential
biological affects upon the anterior eye do not warrant a transmission limitation above 380 nm within the UV-A.
This limit of 380 nm coincides with that taken in ophthalmic optics and in ISO 20473:2007 Optics and photonics - Spectral
bands.
For medical purposes, e.g. protection for PUVA treatment, dermatologists use 400 nm.
NOTE 3 The UV-C range is defined as:
 Far UV (FUV)  190 nm to 280 nm
 Vacuum UV (VUV) 100 nm to 190 nm  (ISO 20473:2007)
NOTE 4 For eye-protection, only the longer wavelength part of the UV-C range from 190 nm to 280 nm is of
importance. This range is not contained in solar radiation and only occurs in a few artificial radiation sources.
4.1.3
visible radiation, light
Sichtbares Spektralgebiet; VIS
domaine spectral visible
any optical radiation capable of causing a visual sensation directly.
[CIE 17.4/IEC 60050: 1987(845-01-03)]

NOTE 1 There are no precise limits for the spectral range of visible radiation since they depend upon the amount of
radiant power reaching the retina and the responsivity of the observer. The lower limit is generally taken between 360 nm
and 400 nm and the upper limit between 760 nm and 830 nm.
NOTE 2 For purposes of eye and face PPE, the wavelength range is taken to be between 380 nm and 780 nm
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4.1.4
IR-radiation; infrared radiation
infrarote Strahlung; IR-Strahlung
rayonnement infrarouge
optical radiation for which the wavelengths are longer than those for visible radiation
NOTE For infrared radiation, the range between 780 nm and 1 mm is commonly subdivided into:
 IR-A 780 nm to 1 400 nm ;
 IR-B 1 400 nm to 3 000 nm ;
 IR-C 3 000 nm to 1 mm.
[CIE 17.4/IEC 60050: 1987 (845-01-04)]
4.1.5
monochromatic light, monochromatic radiation
Monochromatisches Licht
lumière monochromatique
radiation characterized by a single frequency
[CIE 17.4/IEC 60050: 1987 (845-01-07)]
NOTE 1 Although frequency is the more fundamental property, the wavelength in air (or in vacuo) is the more
commonly used attribute used to characterize a monochromatic radiation.
NOTE 2 optical radiation extending over a very narrow range of wavelengths (e.g. such as that emitted by a laser)
that can be characterized by a single wavelength value (usually the mean) is regarded as monochromatic.
4.1.6
illuminant
Lichtart
illuminant
radiation with a relative spectral power distribution defined over the wavelength range that influences object
colour perception.
[CIE 17.4/IEC 60050: 1987 (845-03-10)]
NOTE In everyday English this term is not restricted to this sense, but is also used for any kind of light falling on a
body or scene.
4.1.7
CIE standard illuminants
Normalichtarten CI
illuminants normalisés CIE
illuminants A, B, C, D and other illuminants D, defined by the CIE in terms of relative spectral power
distributions
CIE 17.4/IEC 60050: 1987 (845-03-12)
NOTE 1 These illuminants are intended to represent
A Planckian radiation with a temperature of 2856° K
B direct solar radiation (obsolete)
C average daylight
D Daylight including the ultraviolet section;
NOTE 2 CIE 17.4/IEC 60050: 1987 (845-03-11) gives: 'daylight illuminant; illuminant having the same or nearly the
same relative spectral power distribution as a phase of daylight'.
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NOTE 3 Standard illuminant A is meant to represent the spectral output of a tungsten lamp, illuminant C is meant to
represent light form the average North Sky (Northern hemisphere), while D is meant to represent average daylight in a
temperate zone with a clear or cloudy sky. Illuminant P (Planckian radiation with a temperature of 1900° K) is used in
infrared measurements.
NOTE 4 tables defining some of these illuminants are at: http://www.cie.co.at/index_ie.html
4.2 Terms relating to sources of non-ionising radiation
4.2.1
air-arc cutting; arc gouging
Lichtbogenfugenhobeln
gougeage à l'arc
thermal gouging or cutting method for metallic materials which uses an electric arc
NOTE: This method uses a carbon electrode with a compressed air jet which removes the molten material. (Note that
gouging is a thermal cutting process variation that forms a groove by melting or burning, and this groove may be extended
using the same thermal method to a form a cut.)
4.2.2
arc welding
Lichtbogenschweissen
soudage à l'arc
electric welding method, using an arc that is generated between the rod-shaped metal electrode and
workpiece
NOTE The electrode melting in the hot arc is used as the filler metal for the welded joint [From/modified from EN165]
4.2.3
fault arc
Störlichtbogen
arc parasitaire
intensive arc that may occur through switching or short circuit in electricity distribution installations
[From/modified from EN165]
4.2.4
gas cutting; flame cutting
Brennschneiden
oxycoupage
thermal method of cutting metallic material using a gas and oxygen [From/modified from EN165]
NOTE: this method does not use an electric arc.
4.2.5
plasma arc cutting
plasmaschmeizschneiden
découpage par arc de plasma
thermal cutting method for metallic materials which uses a constricted electric arc and a high velocity jet of
gas issuing from a constricting orifice to give a high temperature plasma flame that melts and removes the
metallic material
4.2.6
blacklight lamp; ultraviolet radiation source
Schwarzlichtstrahler
source de lumière noire
UV-A radiation source, generally a mercury vapour discharge lamp, with the bulb (high pressure radiation
source) or tube (low pressure radiation source) made from light absorbing but UV-A transmitting filter glass.
NOTE The glass filter appears almost black in colour
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4.2.7
halogen metal vapour lamp
Halogen-Metalldampflampe
lampe aux halogénures métalliques
mercury vapour lamp doped generally with a mixture of iodides of certain metals [From/modified from EN165]
4.2.8
low pressure (intensity) mercury vapour lamp
Quecksilberdampf-Niederdrucklampe
lampe à vapeur de mercure à basse pression
mercury discharge lamp with or without fluorescent layer, but with relatively large tube dimensions (fluorescent
lamp) and an internal pressure between 300 Pa and 500 Pa
NOTE In mercury discharge lamps with a fluorescent layer, the layer is excited by the ultraviolet radiation of the
discharge to generate visible radiation [From/modified from EN165]
4.2.9
medium pressure (intensity) mercury vapour lamp
Quecksilberdampf-Mitteldrucklampe
lampe à vapeur de mercure à moyenne pression
Obsolete term. These discharge lamps are usually specified within the range of high intensity lamps. The
medium working pressure is approximately 20kPa [From/modified from EN165]
4.2.10
high pressure (intensity) mercury vapour lamp
Quecksilberdampf-Hochdrucklampe
lampe à vapeur de mercure à haute pression
gas discharge lamp with an operating pressure in the discharge tube of approximately 200 kPa to 1500 kPa
[From/modified from EN165]
4.2.11
very high pressure (intensity) mercury vapour lamp
Quecksilberdampf-Höchstdrucklampe
lampe à vapeur de mercure à très haute pression
luminous density of an arc discharge can be increased by increasing the pressure. To achieve this, the arc
length has to be reduced
NOTE Mercury vapour very high intensity lamps attain pressures exceeding 10 kPa. [From/modified from EN165]
4.2.12
pulse duration; FDHM
Impulsdauer
durée d'impulsion
interval, in s, between the time in the time/power curve at which the power has risen to half the peak power
and the time at which it has fallen to half the peak power.
NOTE Pulse duration is also referred to as FDHM (Full Duration at Half Maximum).
4.2.13
laser beam
Laserstrahlen
rayonnement laser
optical radiation from lasers (Light Amplification by Stimulated Emission of Radiation) that is generally
focused, directed, monochromatic and coherent (correlated in space and time) [From/modified from EN165]
4.2.14
continuous wave laser
Dauerstrichlaser
laser continu
laser that is capable of emitting its radiant energy continuously or with a minimum duration of 0,25 s
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[IEC/EN 60825-1]
NOTE Although a laser with pulses longer than 0,25 s (0,3 s, say) would be considered under this definition to be a
continuous wave laser, the pulsed nature will still need to be taken into account to properly assess its hazard.
4.2.15
He-Ne laser; Helium-Neon laser
He-Ne-Laser; Helium-Neon-Laser
Laser He-Ne; Laser à hélium et néon
gas laser (helium-neon) the most common version of which produces red light of wavelength 632,8 nm
[From/modified from EN165]
4.2.16
pulsed laser
Impulslaser
laser impulsionnel
laser which, on the basis of its construction, delivers its energy in single pulses, each of duration >1 µs
[From/modified from EN165]
4.2.17
giant pulsed laser
Riesenimpulslaser
laser déclenché
laser which, on the basis of its construction, delivers its energy in single pulses, each of duration between 1 ns
and 1 µs [From/modified from EN165]
4.2.18
mode-coupled laser; mode-locked laser
Modengekoppelter Impulslaser
laser à impulsions à couplage de modes
laser that utilises a mechanism within the laser resonator to produce a train of very short (typically sub-
nanosecond) pulses
NOTE While this may be a deliberate feature of the laser it can also occur spontaneously and is then called “self-mode-
locking”. [From/modified from IEC/EN60825-1: 2007]
4.2.19
intense pulsed light sources (IPL)
compact xenon arc lamp, operated in a pulsed mode, usually filtered to emit visible and near infrared
radiation
NOTE Although lasers can provide an intense pulsed source of light, when used in the medical field the term as is
restricted to xenon arc lamps.

5 Photometric terms
5.1
illuminance (at a point of a surface) (E ; E)
v
Beleuchtungsstärke
éclairement lumineux
quotient of the luminous flux dφ incident on an element of the surface containing the point, by the area dA of
v
that element.
NOTE Equivalent definition. Integral, taken over the hemisphere visible from the given point, of the expression L .
V
cos θ. dΩ, where L is the luminance at the given point in the various directions of the incident elementary beams of solid
V
angle dΩ, and θ is the angle between any of these beams and the normal to the surface at the given point.
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dΦ
V
E = = L cosθ dΩ
V
V
∫
dA
2πsrs
-2
Unit: Lux (lx = lm . m ).
[CIE 17.4/IEC 60050: 1987 (845-01-38)]
NOTE See also radiation power, irradiance.
5.2
irradiance (at a point of a surface) (E ; E)
e
Bestrahlungsstärke E; Leistungsdichte
éclairement énergétique E
quotient of the radiant flux dφ incident on an element of the surface containing the point, by the area dA of
e
that element
NOTE Equivalent definition. Integral, taken over the hemisphere visible from the given point, of the expression L . cos
e
θ. dΩ, where L is the radiance at the given point in the various directions of the incident elementary beams of solid angle
e
dΩ, and θ is the angle between any of these beams and the normal to the surface at the given point.
dΦ
e
E = = L cosθ dΩ
e
E
∫
dA
2πsrs
-2
Unit: W. m
[CIE 17.4/IEC 60050: 1987 (845-01-37)]
NOTE See also Illuminance and power density.

5.3
luminance
Leuchtdichte
luminance (lumineuse)
(in a given direction, at a given point of a real or imaginary surface) (L ; L), quantity defined by the formula
V
dφ
V
L = where dφ is the luminous flux transmitted by an elementary beam passing through the
V
V
dA cosθ dΩ
given point and propagated in the solid angle dΩ containing the given direction. dA is the area of a section of
that beam containing the given point; θ is the angle between the normal to that section and the direction of the
beam.
-2 --1
Unit: cd/m , lm.m .sr
[CIE 17.4/IEC 60050: 1987 (845-01-35)]
NOTE simplified to the standard case, luminance is the quotient of the luminous intensity I divided by the surface
area projected perpendicular to the direction of radiation as a projected plane (A cosθ):
L = l /(Acosθ )
5.4
luminous flux (φ , φ)
V
Lichtstrom
flux lumineux
Quantity derived from radiant flux φ by evaluating the radiation in accordance with its action upon the CIE
e
∞
dφ (λ) dφ (λ)
e e
standard photometric observer. For photopic vision, φ = K V (λ)dλ where is the
v ∫
m
dλ dλ
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spectral distribution of the radiant flux and V(λ) is the spectral luminous efficiency

Unit: Lumen, lm.
NOTE 1 unless otherwise stated, photopic (daylight) vision is assumed.
-1
NOTE 2 CIE 845-01-56 (luminous efficacy of radiation) gives the values of K (photopic vision) as 683 lmW for ν =
m m
-1
540 x 1012 Hz (λ » 555 nm) and K’ (scotopic vision) as 1700 lmW for λ' = 507 nm.
m m m
NOTE 3 more simply, quantity obtained from the radiant power by evaluating the radiation in accordance with its
influence on the CIE standard photometric observer:
φ = Q/t
[CIE 17.4/IEC 60050: 1987 (845-01-25)]

5.5
luminance coefficient (at a surface element on the surface of the medium, in a given direction, under
specified conditions of illumination) [q ; q]
V
Leuchtdichtekoeffizient
coefficient de luminance (lumineuse)
quotient of the luminance of the surface element in the given direction divided by the Illuminance on the
medium.
2 -1
Unit: cd/m /lx = sr .
[CIE 17.4/IEC 60050: 1987 (845-04-71)]
[From/modified from EN 165]
NOTE: this is a measure of the light scattered by an ocular, being the luminance of the light scattered by the ocular as
a proportion of the amount of light falling on the ocular. See 9.1.11 to 9.1.13.
5.6
reduced luminance coefficient
Leuchtdichtekoeffizient, reduzierter
facteur de luminance, réduit
luminance coefficient l* corrected for the transmittance of a filter is obtained by dividing the luminance
coefficient l by the luminous transmittance τ of the filter, giving:
v
l* = l /τ
v
Unit: (cd/m)/lx [From/modified from EN 165]

5.7
radiant flux ; radiant power
Strahlungsfluss ; Strahlungsleistung
flux énergétique
power emitted, transmitted or received in the form of radiation
Unit: W (Watt).
[CIE 17.4/IEC 60050: 1987 (845-01-24)]
5.8
radiant exposure (at a point of a surface, for a given duration) (H ; H )
e
Bestrahlung H ; Energiedichte
exposition énergétique H ; irradiation
quotient of dQ , radiant energy incident on an element of the surface containing the point over the given
e
duration, by the area dA of that element.
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NOTE equivalent definition Time integral of E , irradiance at the given point, over the given duration ∆t
e
dQ
e
H = = E dt
e e
∫
dA
∆t
-2 -2
Unit: J.m or W.s.m
[CIE 17.4/IEC 60050: 1987 (845-01-42)]
5.9
power density
Leistungsdichte
flux énergique surfacique
the power density, in W/m , is the power of the radiation that is transmitted relative to the cross-section area
of the beam
NOTE See also > radiation power E. [From/modified from EN 165]
5.10
radiation power (E)
éclairement énergétique
qualitatively, energy, in the form of electromagnetic radiation, per unit time.
5.11
spectral luminous efficiency
efficacité lumineuse relative spectrale
(of a monochromatic radiation, λ) V(λ) for photopic vision, V'(λ) for scotopic vision
ratio of the radiant flux at wavelength λ to that at wavelength λ such that both radiations produce equally
m
intense luminous sensation under specified photometric conditions and λ is chosen so that the maximum
m
value of the ratio is equal to 1.
NOTE Unless otherwise indicated, the value used for the spectral luminous efficiency in photopic vision are the
e
values agreed in 1924 by the CIE (Compte Rendu 6 session, p67), completed by interpolation and extrapolation
(Publication CIE no 18 (1970) p 43 and no 15 (1971) p 93) and recommended by the International Committee of Weights
and Measures (CIPM) in 1972. For scotopic vision, the CIE in 1951 adopted, for young observers, the values published in
e
Compte Rendu 12 session, Vol 3, p37, and ratified by the CIPM in 1976. These values define respectively the V(λ) or
V'(λ) functions.
[CIE 17.4/IEC 60050: 1987 (845-01-22)]

5.12
candela
luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x
10 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian
th
NOTE: This is the SI unit of luminous intensity. 10 General Conference of Weights and Measures, 1979
Symbol: cd
[CIE 17.4/IEC 60050 845-01-50: 1987]

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5.13
solid angle
Raumwinkel
angle solide
two dimensional angle (e.g. the cone of light from a pocket lamp). If an imaginary sphere is constructed with
its centre at the apex of the angle, the value Ω of the solid angle is given by the area A enclosed by the angle
on the surface of the sphere divided by the square of the sphere’s radius r. See figure 1.
Ω = A/r
Unit: Steradian sr
A
Ω
r
Key:
Ω = the solid angle,
A = area on imaginary surface, and
r = radius of imaginary sphere

Figure 1 — Diagram to represent the derivation of the steradian

6 Terms relating to eye and face protection
6.1 General terms
6.1.1
certification mark
Zertifizierungszeichen ; Zertifizierung
marque de certification
for the purpose of ISO/IEC Directive 2 (1986) certification, more accurately "certification of conformity" is "an
act of a neutral third party confirming that it is reasonable to believe that a specifically marked product,
procedure or service is in conformity with a specified standard or another specified normative document".
The expression of this certification is the certification mark. [From/modified from EN165]
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6.1.2
intended use
utilisation prévue
use of a product, process or service in accordance with information provided by the supplier.
[ISO/IEC Guide 51]
6.1.3
eye-protector
Augenschutzgerät
protecteur de l'œil
any form of eye protective equipment intended to protect not less than the region of the eye [From/modified
from EN165]
6.1.4
eye-guard
écran oculaire
device which provides protection to essentially only the eye region
6.1.5
face-guard
device which provides protection to the eyes and a substantial area of the face
6.1.6
face-screen
Schutzschirm
écran facial monté
eye-protectors with face protection that can be worn with a support directly on the head or in conjunction with
a protective helmet
NOTE: They could be hand held [From/modified from EN165]
6.1.7
face-shield
Gesichtsschutzschild
écran facial
eye-protector covering all the face [From/modified from EN165]
NOTE 1 AS/NZ 1337 gives: device which includes an ocular (a lens or lenses) worn in front of the eyes and intended
to provide protection for the eyes.
NOTE 2 See also visor.
6.1.8
goggle
Korbbrille
lunette-masques
eye-protector that tightly encloses the orbital area and sits on the face [From/modified from EN165]
6.1.9
hand-shield
Schutzschild
écran à main
eye-protectors with face protection that are hand-held
NOTE See also welder’s hand-shield [From/modified from EN165]
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6.1.10
helmet
Helm
Casque
headgear made of shock-resistant material intended to protect parts of the wearer’s head against specified
hazard [From/modified from EN165]
6.1.11
protective mask
Schutzhaube
écran facial intégré
protector which can be worn with a support either directly on the head or in conjunction with a protective
helmet, that protects the face, throat and neck in addition to the eyes [From/modified from EN165]
6.1.12
ocular
Sichtscheibe
oculaire
generic term for the light transmitting part of an eye-protector (made of mesh, mineral or organic material)
permitting vision, e.g. lens, visor, screen [From/modified from EN165]
6.1.13
protective ocular
Sicherheitssichtscheibe
oculaire de sécurité
ocular with a defined mechanical protective effect higher than minimum robustness
NOTE It may have a filtering effect [From/modified from EN165]
6.1.14
protective screen
Gesichtsschirm
protection faciale
NOTE See face screen
6.1.15
spectacles
Bügelbrille
lunette à branches
1) in general: appliance comprising oculars and a frame or mount that rests on the nose with sides extending
towards or over the ears
NOTE 1 The front including the bridge resting on the nose and oculars may be moulded in one piece, or alternatively
have an aperture into which separate oculars have been inserted/mounted.
NOTE 2 The sides may be continued behind the head with a headband.
2) for purposes of Standards on Eye and Face protection: eye protector in a spectacle configuration
NOTE 3 A spectacle eye protector may have lateral protection
6.1.16
visor
Visier
visière
protective device covering either the eye area or both the eye area and parts of the face [From/modified from
EN165]
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6.1.17
blink reflex
Lidschlussreflex
réflexe palpébral
property of the human eye to close the eyelid within 0,25 s when stimulated by intense light or other stimuli
[From/modified from EN165]
6.1.18
photophobia
Photophobie
photophobie
uncomfortable sensation in the eye when subjected to light
NOTE 1 It can occur with any anterior eye ailment (e.g. conjunctivitis, iritis, keratitis)
NOTE 2 Translated, this means "fear of light".  [From/modified from EN 165]
6.1.19
areas to be protected
zones à protéger
those zones of the appropriate headform (size, facial characteristics) specified by the appropriate clauses of
the Standard for the type of product
6.1.20
areas to be tested
zones à tester
those zones of the eye and face protector to be tested in accordance with the appropriate clauses of the
Standard for the type of product
NOTE areas may be subdivided into those requiring optical testing and those requiring non-optical testing, e.g. a
faceguard may have an area 120 mm wide by 50 mm deep requiring optical testing and a much larger zone, including the
ocular, requiring testing against non-optical hazards
6.1.21
minimum robustness
résistance mécanique
mechanical strength of an ocular to resist fracture or deformation by a static load
6.1.22
mechanical strength
résistance mécanique
numerical indicator of the protective ability against mechanical hazards, greater than minimum robustness,
of an ocular or eye protector to resist fracture or deformation by impact
Note 1: strengths 1 and 2 are tested by drop ball, 3 and above by projectile. 2 indicates a higher strength than 1, and in
turn, 5 indicates a higher impact resistance than 4, which in turn is better than 3.
Note 2: For special cases, such as a squash ball impact test, a different classification symbol will be used.
Note 3: To avoid confusion with optical quality, the number may have to be prefaced by a letter.

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6.2 Terms relating to the geometrical properties of eye and face protection
6.2.1
boxed centre
centre de la boîte
intersection of the horizontal and vertical centrelines of the rectangular box which circumscribes the ocular
shape. See figure 2.
NOTE Adapted from ISO 8624: 2002

Figure 2 Boxed centre
6.2.2
geometric centre
geometrischer Mittelpunkt (einer Sichtscheibe)
centre géométrique (d'un oculaire
...