Measurement and assessment of personal exposures to incoherent optical radiation - Part 4: Terminology and quantities used in UV-, visible and IR-exposure measurements

This standard specifies the terminology and the quantities that are used in UV-, VIS- and IR-exposure measurements according to parts 1, 2 and 3 of EN 14255.
NOTE   Parts 1 and 2 were published in 2005, while part 3 is under preparation.
This standard can also be applied to the terminology and quantities used in international recommendations from, e.g. ICNIRP, CIE, etc. The purpose of this standard is to unify the definitions of quantities for optical radiation measurements since inconsistencies occur between existing publications from different origins.

Messung und Beurteilung von personenbezogenen Expositionen gegenüber inkohärenter optischer Strahlung - Teil 4: Terminologie und Größen für Messungen von UV-, sichtbaren und IR-Strahlungs-Expositionen

Diese Norm legt die Terminologie und die Größen fest, die bei Messungen von UV-, VIS- und IR-Exposi¬tionen nach EN 14255-1, EN 14255-2 und EN 14255-3 angewendet werden.
ANMERKUNG   EN 14255-1 und EN 14255-2 wurden in 2005 veröffentlicht. EN 14255-3 ist in Vorbereitung.
Diese Norm kann auch auf die Terminologie und Größen angewendet werden, die in internationalen Empfeh¬lungen, z. B. von ICNIRP, CIE usw., verwendet werden. Der Zweck dieser Norm ist die Vereinheitlichung der Definitionen von Größen für Messungen optischer Strahlung, weil zwischen den vorhandenen Publika¬tionen aus unterschiedlichen Quellen Widersprüche auftreten.

Mesurage et évaluation de l'exposition des personnes aux rayonnements optiques incohérents - Partie 4 : Terminologie et grandeurs utilisées pour le mesurage de l'exposition au rayonnement ultraviolet, visible et infrarouge

Le présent document spécifie la terminologie et les grandeurs à utiliser pour le mesurage de l’exposition aux rayonnements UV, VIS et IR, selon les parties 1, 2 et 3 de l’EN 14255.
NOTE    Les parties 1 et 2 ont été publiées en 2005, la partie 3 est en cours de préparation.
La présente norme peut également s’appliquer à la terminologie et aux grandeurs utilisées dans les recommandations internationales comme par exemple l’ICNIRP, la CIE, etc. Cette norme a pour objectif d’uniformiser les définitions de grandeurs de mesure de rayonnement optique car des incohérences sont apparues entre des publications existantes de différentes origines.

Merjenje in ocenjevanje izpostavljenosti oseb inkoherentnemu optičnemu sevanju - 4. del: Terminologija in veličine pri meritvah izpostavljenosti UV-, vidnemu in IR-sevanju

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Published
Publication Date
24-Oct-2006
Current Stage
9093 - Decision to confirm - Review Enquiry
Completion Date
25-Mar-2011

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Measurement and assessment of personal exposures to incoherent optical radiation - Part 4: Terminology and quantities used in UV-, visible and IR-exposure measurementsVHYDQMXMesurage et évaluation de l'exposition des personnes aux rayonnements optiques incohérents - Partie 4 : Terminologie et grandeurs utilisées pour le mesurage de l'exposition au rayonnement ultraviolet, visible et infrarougeMessung und Beurteilung von personenbezogenen Expositionen gegenüber inkohärenter optischer Strahlung - Teil 4: Terminologie und Größen für Messungen von UV-, sichtbaren und IR-Strahlungs-ExpositionenTa slovenski standard je istoveten z:EN 14255-4:2006SIST EN 14255-4:2007en17.240Merjenje sevanjaRadiation measurements17.180.20Barve in merjenje svetlobeColours and measurement of lightICS:SLOVENSKI

STANDARDSIST EN 14255-4:200701-april-2007
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14255-4
October 2006 ICS 01.040.17; 17.180.20; 17.240 English Version

Measurement and assessment of personal exposures to incoherent optical radiation - Part 4: Terminology and quantities used in UV-, visible and IR-exposure measurements

Mesurage et évaluation de l'exposition des personnes aux rayonnements optiques incohérents - Partie 4 : Terminologie et grandeurs utilisées pour le mesurage de l'exposition au rayonnement ultraviolet, visible et infrarouge Messung und Beurteilung von personenbezogenen Expositionen gegenüber inkohärenter optischer Strahlung -Teil 4: Terminologie und Größen für Messungen von UV-, sichtbaren und IR-Strahlungs-Expositionen This European Standard was approved by CEN on 18 September 2006.

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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, 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.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36

B-1050 Brussels © 2006 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14255-4:2006: E

EN 14255-4:2006 (E) 2 Contents Page Foreword..............................................................................................................................................................3 Introduction.........................................................................................................................................................4 1 Scope......................................................................................................................................................5 2 Normative references............................................................................................................................5 3 Terms and definitions...........................................................................................................................5 3.1 Symbols, terms and units.....................................................................................................................5 3.2 Definitions..............................................................................................................................................7 4 Relationships between quantities......................................................................................................15 4.1 Irradiance E..........................................................................................................................................15 4.2 Radiant exposure H.............................................................................................................................15 Bibliography......................................................................................................................................................16

EN 14255-4:2006 (E) 3 Foreword This document (EN 14255-4:2006) has been prepared by Technical Committee CEN/TC 169 “Light and lighting”, the secretariat of which is held by DIN. 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 April 2007, and conflicting national standards shall be withdrawn at the latest by April 2007. EN 14255 Measurement and assessment of personal exposures to incoherent optical radiation is published in four parts: Part 1: Ultraviolet radiation emitted by artificial sources in the workplace Part 2: Visible and infrared radiation emitted by artificial sources in the workplace Part 3: UV-Radiation emitted by the sun (in preparation) Part 4 (this part): Terminology and quantities used in UV-, visible and IR-exposure measurements According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, 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.

EN 14255-4:2006 (E) 4 Introduction People may be exposed to adversely high levels of optical radiation (ultraviolet, visible and infrared radiation) from strong optical radiation sources in the workplace and elsewhere. In order to protect people from harm their optical radiation exposures should be determined in these cases and compared with limit values which are set by national authorities or recommended by international organisations (e.g. ICNIRP1), see [5], [6], [7], [8], [11]). Part 1 of this standard describes methods to determine ultraviolet (UV) radiation exposures in the workplace, part 2 of this standard describes methods to determine visible (VIS) and infrared (IR) radiation exposures in the workplace and part 3 of this standard describes methods to determine ultraviolet radiation exposures by the sun.

There are several quantities in which optical radiation exposures are expressed. Unfortunately some of these quantities are defined and named in different ways by different reference sources, such as standards and limit value recommendations. Additionally, some of the quantities are not always very well defined in a strong physical and mathematical sense. Hence there is a need for clarification and uniform definition of these quantities.

In this part 4 of the standard a uniform terminology for quantities is specified and the quantities are defined in a way which makes them reasonably applicable in practical use. The terminology and quantities defined may be used when parts 1, 2 and 3 of this standard are applied or when relevant standards or limit value recommendations are to be revised.

In this standard, terms which are often expressed elsewhere as summations have been reformulated and expressed mathematically as integrals. Cumbersome terms in current use, such as time integrated radiance, have been replaced by newly defined terms which clarify the relationship between, for example, radiance and radiance dose.

In order to specify and define quantities more clearly, some of the quantities have been renamed. In this standard the names of these quantities differ from the names used in other reference sources. The reason is that within the referred sources the names of these quantities are not sufficiently descriptive, e.g. "effective irradiance Eeff" and "effective radiant exposure Heff" are very general expressions (see CIE2) 17.4) but are used in some references in very specific meanings. In the definition of ICNIRP [5] "effective irradiance" is a quantity which describes the effect of UV radiation as well on the skin as on the eyes. So the quantity is mainly used for prevention purposes when it is often not known which part of the body will be exposed. So this useful quantity has a very specific meaning and it is named in this standard with the specific name "ultraviolet hazard irradiance Es". Another reason for renaming the quantity "effective irradiance" is that it is used in some applications to indicate a net effect such as the difference between incident and emitted heat radiation. In order to avoid misunderstandings the term "effective irradiance" is not used in this standard. The more specific term "ultraviolet hazard irradiance" is used instead. NOTE Terms and quantities which are not covered by this part of the standard can be found in other reference sources like CIE 17.4, CIE S 007 or CIE S 009.

1) ICNIRP International Commission on Non-Ionizing Radiation Protection. 2) CIE Commission Internationale de l'Éclairage.

EN 14255-4:2006 (E) 5 1

Scope This standard specifies the terminology and the quantities that are used in UV-, VIS- and IR-exposure measurements according to parts 1, 2 and 3 of EN 14255. NOTE Parts 1 and 2 were published in 2005, while part 3 is under preparation. This standard can also be applied to the terminology and quantities used in international recommendations from, e.g. ICNIRP, CIE, etc. The purpose of this standard is to unify the definitions of quantities for optical radiation measurements since inconsistencies occur between existing publications from different origins. 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. Not applicable. 3

Terms and definitions 3.1 Symbols, terms and units Within the field of applications of parts 1, 2 and 3 of EN 14255 the symbols, terms and units listed in Table 1 are used.

EN 14255-4:2006 (E) 6 Table 1 —Symbols, terms and units Symbol Term Unit Defined in λ wavelength nm CIE 17.4:1987

ref 845-01-14 λ1 , λ2 boundaries of a wavelength-range ∆λ nm EN 14255-4 ∆∆∆∆texp, exposure duration s EN 14255-4 E irradiance W/m² CIE 17.4:1987 ref 845-01-37 Eλ(λ,t), Eλ(λ) spectral irradiance W/(m² × nm) EN 14255-4

H radiant exposure J/m² CIE 17.4:1987 ref 845-01-42 Hλ(λ) spectral radiant exposure J/(m² × nm) EN 14255-4

Es ultraviolet hazard irradiance W/m² EN 14255-4 Hs ultraviolet hazard radiant exposure J/m² EN 14255-4 Eb blue-light irradiance W/m² EN 14255-4 Hb blue-light radiant exposure J/m² EN 14255-4 L radiance W/(m² × sr) CIE 17.4:1987 ref 845-01-34 andCIE S 009/E:2002 clause 3.31 Lλ(λ) spectral radiance W/(m² × nm × sr) CIE S 009/E:2002 clause 3.41 Lb blue-light radiance W/(m² × sr) EN 14255-4 Lr retinal thermal radiance W/(m² × sr) EN 14255-4 G radiance dose J/(m² × sr) EN 14255-4 Gb blue-light radiance dose J/(m² × sr) EN 14255-4 — spectral weighting function

— EN 14255-4 s(λ) ultraviolet hazard weighting function — EN 14255-4 b(λ) blue light hazard weighting function — EN 14255-4 r(λ) retinal thermal hazard weighting function — EN 14255-4 D source diameter m EN 14255-4 DL viewing source diameter m EN 14255-4 Dapp apparent source diameter m EN 14255-4 r viewing distance m EN 14255-4 φ viewing angle rad EN 14255-4 γ angle of acceptance rad EN 14255-4

EN 14255-4:2006 (E) 7 Table 1

(continued) Symbol Term Unit Defined in α angular subtense of the apparent source rad CIE S009/E:2002clause 3.2 IUV UV-Index — CIE S 013/E fOE ocular exposure factor — ILO/ICNIRP Guide fSE skin exposure factor — ILO/ICNIRP Guide ser(λ) erythemal weighting function — ISO/CIE 17166 and EN 14255-4 Eer erythemal effective irradiance W/m² ISO/CIE 17166 Her erythemal effective radiant exposure J/m²

ISO/CIE 17166 SED standard erythema dose 100 J/m² ISO/CIE 17166 MED minimal erythema dose J/m² or SED ISO/CIE 17166 snmsc(λ) non-melanoma skin cancer weighting function — CIE DS 019.2/E Enmsc non-melanoma skin cancer effective irradiance W/m² EN 14255-4 Hnmsc non-melanoma skin cancer effective radiant exposure J/m² EN 14255-4 NOTE

Angles like angular subtense α, viewing angle φ and angle of acceptance γ
are often expressed in degrees instead of radians.

3.2 Definitions NOTE Quantities for the irradiance, radiance and radiant exposure, which are calculated by using spectral weighting functions, are named in reference to the specific action spectrum in question. For any specific effect "x", if a spectral weighting function x(λ) exists, the "x-irradiance Ex" can be calculated equivalent to equation (4); e. g. the name "blue-light irradiance Eb" is used for the wavelength integral of the spectral irradiance which is spectrally weighted with the blue-light hazard weighting function b(λ). The blue-light hazard weighting function b(λ) is related to the action spectrum of the blue-light hazard of the eye. Likewise, other names of quantities which allow the assessment of a specific effect are chosen in relation to the action spectra in question. The same procedure may be applied for other spectrally weighted quantities such as radiant exposure Hx , radiance Lx , etc. 3.2.1 boundaries of a wavelength-range

λ1, λ2 lower and upper wavelength value specify
...

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