Safety of laser products - Part 1: Equipment classification and requirements

EN IEC 60825-1 is applicable to safety of laser products emitting laser radiation in the wavelength range 180 nm to 1 mm. Although lasers exist which emit at wavelengths less than 180 nm (within the vacuum ultraviolet), these are not included in the scope of the standard since the laser beam normally has to be enclosed in an evacuated enclosure, and, therefore, the potential optical radiation hazards are inherently minimal. A laser product may consist of a single laser with or without a separate power supply or may incorporate one or more lasers in a complex optical, electrical, or mechanical system. Typically, laser products are used for demonstration of physical and optical phenomena, materials processing, data reading and storage, transmission and display of information, etc. Such systems have found use in industry, business, entertainment, research, education, medicine and consumer products. Laser products that are sold to other manufacturers for use as components of any system for subsequent sale are not subject to IEC 60825-1, since the final product will itself be subject to this standard. Laser products that are sold by or for manufacturers of end products for use as repair parts for the end products are also not subject to IEC 60825-1. However, if the laser system within the laser product is operable when removed from the end product, the requirements of this Part 1 apply to the removable laser system.

Sicherheit von Lasereinrichtungen - Teil 1: Klassifizierung von Anlagen und Anforderungen

Sécurité des appareils à laser - Partie 1: Classification des matériels et exigences

L'IEC 60825-1:2014 s'applique à la sécurité des appareils à laser émettant un rayonnement laser dans la gamme des longueurs d'ondes de 180 nm à 1 mm. Un appareil à laser peut se composer d'un seul laser avec ou sans dispositif d'alimentation séparé, ou bien il peut comporter un ou plusieurs lasers dans un système complexe optique, électrique ou mécanique. Les appareils à laser sont généralement utilisés pour la démonstration des phénomènes physiques et optiques, le travail des matériaux, la lecture et le stockage des données, la transmission et la visualisation de l'information, etc. De tels systèmes sont utilisés dans l'industrie, le commerce, le spectacle, la recherche, l'enseignement, la médecine et les produits de consommation. Les appareils à laser qui sont vendus à d'autres fabricants pour être utilisés en tant que composants d'un matériel quelconque destiné à une vente ultérieure ne sont pas soumis à l'IEC 60825-1, étant donné que l'appareil final est lui-même soumis à la présente norme. Les appareils à laser qui sont vendus par des fabricants ou à d'autres fabricants de produits finis, pour être utilisés en tant que pièces de rechange pour les produits finis ne sont pas couverts par l'IEC 60825-1. Cependant, si le système à laser dans l'appareil à laser est utilisable lorsqu'il est ôté de cet appareil, les exigences de la présente Partie 1 s'appliquent à ce système à laser amovible. La présente partie de l'IEC 60825 répond aux objectifs suivants: - introduire un système de classification des lasers et des appareils à laser émettant un rayonnement dans la gamme des longueurs d'ondes de 180 nm à 1 mm, selon leur degré de danger de rayonnement optique, afin de faciliter l'évaluation des dangers et la détermination des mesures de contrôle des utilisateurs; - établir des exigences pour que le fabricant fournisse des informations, de telle sorte que des précautions adéquates puissent être adoptées; - assurer aux personnes, par des étiquetages et des instructions, une mise en garde appropriée contre les dangers associés au rayonnement accessible des appareils à laser; - et diminuer la possibilité d'accident en réduisant au minimum le rayonnement accessible non utile, et procurer un meilleur contrôle des dangers liés au rayonnement laser par des procédures de protection. Cette troisième édition de l'IEC 60825-1 annule et remplace la deuxième édition publiée en 2007. Elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - une nouvelle classe, Classe 1C, a été introduite; - la condition de mesure 2 (condition "loupe") a été supprimée; - la classification de l'émission des appareils à laser en deçà d'un certain niveau de radiance qui sont prévus pour être utilisés en remplacement des sources de lumière conventionnelles peut éventuellement se faire sur la base de la série IEC 62471; - et les limites d'émission accessible (LEA) des classes 1, 1M, 2, 2M et 3R concernant les lasers à impulsions, essentiellement les sources étendues, ont été actualisées pour prendre en compte la dernière révision des recommandations de l'ICNIRP (document accepté pour publication dans le journal Health Physics en 2013, voir également www.icnirp.org).

Varnost laserskih izdelkov - 1. del: Klasifikacija opreme in zahteve (IEC 60825-1:2014)

Standard EN IEC 60825-1 se uporablja za varnost laserskih izdelkov, ki oddajajo lasersko sevanje v razponu valovnih dolžin od 180 nm do 1 mm. Čeprav obstajajo laserji, ki sevanje oddajajo pri valovnih dolžinah pod 180 nm (znotraj vakuumskih ultravijoličnih valovnih dolžin), takih laserjev področje uporabe tega standarda ne zajema, ker mora biti laserski žarek običajno zaprt v izpraznjeni komori, zato so morebitne nevarnosti zaradi optičnega sevanja minimalne. Laserski izdelek lahko zajema en sam laser z ločenim napajanjem ali brez njega ali pa lahko združuje enega ali več laserjev v kompleksnem optičnem, električnem ali mehanskem sistemu. Običajno se laserski izdelki uporabljajo za prikaz fizikalnih in optičnih pojavov, obdelavo materialov, branje ter skladiščenje podatkov, prenos in prikaz informacij itd. Taki sistemi se uporabljajo v industriji, poslovnem svetu, zabavi, raziskavah, izobraževanju, medicini in potrošniških izdelkih. Za laserske izdelke, ki se prodajajo drugim proizvajalcem kot komponente katerega koli sistema za poznejšo prodajo, standard IEC 60825-1 ne velja, saj se bo zadevni standard uporabljal za končni izdelek. Za laserske izdelke, ki jih proizvajalci končnih izdelkov prodajajo za uporabo kot rezervne dele za končne izdelke ali se prodajajo za te proizvajalce, se standard IEC 60825-1 prav tako ne uporablja. Vendar se zahteve 1. dela uporabljajo za odstranljivi laserski sistem, če je laserski sistem znotraj laserskega izdelka delujoč, ko se odstrani iz končnega izdelka.

General Information

Status
Published
Publication Date
16-Sep-2014
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-Sep-2014
Due Date
10-Nov-2014
Completion Date
17-Sep-2014

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SLOVENSKI STANDARD
SIST EN 60825-1:2014
01-oktober-2014
Nadomešča:
SIST EN 60825-1:2009
Varnost laserskih izdelkov - 1. del: Klasifikacija opreme in zahteve (IEC 60825-
1:2014)
Safety of laser products - Part 1: Equipment classification and requirements
Sicherheit von Lasereinrichtungen - Teil 1: Klassifizierung von Anlagen und
Anforderungen

Sécurité des appareils à laser - Partie 1: Classification des matériels et exigences

Ta slovenski standard je istoveten z: EN 60825-1:2014
ICS:
13.280 Varstvo pred sevanjem Radiation protection
31.260 Optoelektronika, laserska Optoelectronics. Laser
oprema equipment
SIST EN 60825-1:2014 en

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

---------------------- Page: 1 ----------------------
SIST EN 60825-1:2014
---------------------- Page: 2 ----------------------
SIST EN 60825-1:2014
EUROPEAN STANDARD EN 60825-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2014
ICS 13.110; 31.260 Supersedes EN 60825-1:2007
English Version
Safety of laser products - Part 1: Equipment classification and
requirements
(IEC 60825-1:2014)

Sécurité des appareils à laser - Partie 1: Classification des Sicherheit von Lasereinrichtungen - Teil 1: Klassifizierung

matériels et exigences von Anlagen und Anforderungen
(CEI 60825-1:2014) (IEC 60825-1:2014)

This European Standard was approved by CENELEC on 2014-06-19. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 60825-1:2014 E
---------------------- Page: 3 ----------------------
SIST EN 60825-1:2014
EN 60825-1:2014 - 2 -
Foreword

The text of document 76/502/FDIS, future edition 3 of IEC 60825-1, prepared by IEC/TC 76 "Optical

radiation safety and laser equipment" was submitted to the IEC-CENELEC parallel vote and approved

by CENELEC as EN 60825-1:2014.
The following dates are fixed:
– latest date by which the document has to be implemented at (dop) 2015-03-19
national level by publication of an identical national
standard or by endorsement
– latest date by which the national standards conflicting with (dow) 2017-06-19
the document have to be withdrawn
This document supersedes EN 60825-1:2007.

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

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

patent rights.
Endorsement notice

The text of the International Standard IEC 60825-1:2014 was approved by CENELEC as a European

Standard without any modification.
IEC 60027-1 NOTE Harmonised in EN 60027-1.
IEC 60065 NOTE Harmonised as EN 60065.
IEC 60079 (Series) NOTE Harmonised as EN 60079 (Series).
IEC 60204-1 NOTE Harmonised as EN 60204-1.
IEC 60601-2-22 NOTE Harmonised as EN 60601-2-22.
IEC 60825-2 NOTE Harmonised as EN 60825-2.
IEC 60825-4 NOTE Harmonised as EN 60825-4.
IEC 60825-12 NOTE Harmonised as EN 60825-12.
IEC 60950 (Series) NOTE Harmonised as EN 60950 (Series).
IEC 61010-1 NOTE Harmonised as EN 61010-1.
IEC 61508 (Series) NOTE Harmonised as EN 61508 (Series).
IEC 62115 NOTE Harmonised as EN 62115.
IEC 62368-1 NOTE Harmonised as EN 62368-1.
IEC/ISO 11553 (Series) NOTE Harmonised as EN ISO 11553 (Series).
ISO 11146-1 NOTE Harmonised as EN ISO 11146-1.
ISO 12100 NOTE Harmonised as EN ISO 12100.
ISO 13694 NOTE Harmonised as EN ISO 13694.
ISO 13849 (Series) NOTE Harmonised as EN ISO 13849 (Series).
ISO 15004-2:2007 NOTE Harmonised as EN ISO 15004-2:2007.
ISO 80000-1 NOTE Harmonised as EN ISO 80000-1.
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SIST EN 60825-1:2014
- 3 - EN 60825-1:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050 series International Electrotechnical Vocabulary - series
IEC 62471 (mod) - Photobiological safety of lamps and lamp EN 62471 -
systems
---------------------- Page: 5 ----------------------
SIST EN 60825-1:2014
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SIST EN 60825-1:2014
IEC 60825-1
Edition 3.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ
Safety of laser products –
Part 1: Equipment classification and requirements
Sécurité des appareils à laser –
Partie 1: Classification des matériels et exigences
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XE
ICS 13.110; 31.260 ISBN 978-2-8322-1499-2

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 60825-1:2014
IEC 60825-1:2014/ISH1:2017 – 1 –
 IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
IEC 60825-1
Edition 3.0 2014-05
SAFETY OF LASER PRODUCTS –
Part 1: Equipment classification and requirements
INTERPRETATION SHEET 1

This interpretation sheet has been prepared by IEC technical committee 76: Optical radiation

safety and laser equipment.
The text of this interpretation sheet is based on the following documents:
FDIS Report on voting
76/587/FDIS 76/593/RVD

Full information on the voting for the approval of this interpretation sheet can be found in the

report on voting indicated in the above table.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
___________
Subclause 4.3 Classification rules
This subclause is clarified by the following:
Introduction

For some complex extended sources or irregular temporal emissions, the application of the

rules of subclause 4.3 may require clarification because of changes from IEC 60825-1:2007.

NOTE 1 For the purpose of this interpretation sheet, the abbreviation “AE” is used for “accessible emission”.

NOTE 2 The clarifications also apply in an equivalent way to MPE analysis, i.e. for Annex A.

ICS 13.110; 31.260
IEC 60825-1:2014-05/ISH1:2017-12(en-fr)
---------------------- Page: 8 ----------------------
SIST EN 60825-1:2014
– 2 – IEC 60825-1:2014/ISH1:2017
 IEC 2017
1 Subclause 4.3 b) Radiation of multiple wavelengths
See IEC 60825-1:2014/ISH2.
2 Subclause 4.3 c) Radiation from extended sources

When using the default (simplified) evaluation method (subclause 5.4.2) for wavelengths

≥ 400 nm and < 1 400 nm, the angle of acceptance may be limited to 100 mrad for

determining the accessible emission to be compared against the accessible emission limit,

except in the wavelength range 400 nm to 600 nm for durations longer than 100 s where the

circular-cone angle of acceptance is not limited. When evaluating the emissions for

comparison to the Class 3B AELs, the angle of acceptance is not limited.
3 Subclause 4.3 d) Non-uniform, non-circular or multiple apparent sources

In subclause 4.3 d), for comparison with the thermal retinal limits, the requirement to vary the

angle of acceptance in each dimension might appear to contradict the labelling in Figure 1

and Figure 2 of subclause 5.4.3 where the field stop is labelled as circular.
Interpretation

A circular field stop is applicable for circularly symmetric images of the apparent source and

for this case is consistent with the procedure given in subclause 4.3 d). For images of the

apparent source that are not circularly symmetric, the simple example below clarifies the

application of subclause 4.3 d).

A circular field stop with an angular subtense equal to α is, however, applicable for non-

max

circularly symmetric profiles if the analysis performed according to subclause 4.3 d), following

variation of the angle of acceptance in each dimension, results in a solution which is equal to

α in both dimensions.
max

As a general principle, for whatever emission duration t the AEL is determined (such as the

pulse duration, the pulse group duration or the time base for averaging of the power), the

same emission duration t is also used to calculate α (t).
max

The following example demonstrates the method described in subclause 4.3 d) to analyse

irregular or complex images of a source. It is noted that the example is equivalent to the

second part of the example (“Additional Remarks”; 6 mrad spacing instead of 3 mrad) B.9.1 of

IEC TR 60825-14:2004 (however, for 6 mrad element spacing, the result in terms of which

grouping is critical was not correct). The source is a diode array (Figure 1). The task is to

determine the applicable AEL that limits the AE for Class 2. Each diode contributes a partial

accessible emission AE of 1 mW that passes through a 7 mm aperture stop at the distance

where the analysis is performed (i.e. a total power of 20 mW passes through the aperture

stop), and the emission is continuous wave. The analysis requires determination of the most

restrictive (maximum) ratio of AE over AEL by variation of the angle of acceptance in position

and size to achieve different fields of view.
---------------------- Page: 9 ----------------------
SIST EN 60825-1:2014
IEC 60825-1:2014/ISH1:2017 – 3 –
 IEC 2017
α = γ
x1 x1
6 mrad
α = γ
x2 x2
2,8 mrad
α = γ
α = γ
y2 y2
y1 y1
2,2 mrad
IEC

Figure 1 – Image of a source pattern for the example of 20 emitters. Two possible

groupings are defined by the respective angle of acceptance γ and γ
x y

The analysis of a sub-group of sources is associated with a certain value of α for that group,

and a certain accessible emission associated with that sub-group. For instance α of a single

element equals (1,5 mrad + 2,2 mrad)/2 = 1,85 mrad so that the AEL = 1,23 mW. The

applicable AE = 1 mW and AE/AEL = 1 mW/1,23 mW = 0,8. For a vertical two-element group,

as shown in the figure with γ and γ , α = (2,8 + 2,2)/2 = 2,5 mrad so that AEL = 1,66 mW;

x1 y1

AE = 2 × 1 mW = 2 mW and AE/AEL = 1,2, which is more restrictive than AE/AEL for only one

element. For one row of 10 diodes α = (1,5 + 56,2)/2 = 28,9 mrad, AEL = 19,2 mW, the AE =

10 × 1 mW = 10 mW and AE/AEL = 0,5. Analysis of all possible groupings shows that the

vertical two-element group has the maximum AE/AEL and therefore is the solution of the

analysis. This means that the AEL of Class 2 is exceeded by a factor 1,2. Note that only a

portion of the power of 20 mW that passes through the 7 mm aperture stop is considered as

the AE (2 mW; as partial power within the angle of acceptance that is associated to the part of

the image with the maximum ratio of AE/AEL) that is compared against the AEL. The entire

array represents the highest ratio of AE/AEL in cases where the element spacing is

sufficiently close, e.g. when the contributions of extra elements to the AE are not dominated

by the increased AEL due to the larger subtended angle.

For pulsed emission, for the determination of α according to the above method (4.3 d)) where

the ratio of AE to AEL is maximized, requirement 3) of 4.3 f) is not applied, i.e. the AEL is

single

not reduced by C . Due to the dependence of α on emission duration t, the analysis of the

5 max

image of the apparent source may result in different values of α and of the partial accessible

emission, depending which emission duration is analysed for the requirements of 4.3 f). For

example, for emission durations shorter than 625 µs (α = 5 mrad), the maximum partial

max
array to consider in the image analysis is a vertical two element group.

Ref.: Classification of extended source products according to IEC 60825-1, K. Schulmeister,

ILSC 2015 Proceedings Paper, p 271 – 280; Download:
https://www.filesanywhere.com/fs/v.aspx?v=8b70698a595e75bcaa69
4 Subclause 4.3 f) 3) determination of α

For an analysis of pulsed emission, α , which is a function of time α (t), limits both the

max max

value of α for the determination of C (α) as well as the angle of acceptance γ for the

determination of the accessible emission (see 4.3 c) and d)) and Clause 3 of this

interpretation sheet; in this process, α (t) is determined for the same emission duration t

max

that is used to determine AEL(t) (i.e. the pulse duration or the pulse group duration for

α is

4.3 f) 3) and the averaging duration for 4.3 f) 2), respectively). However, the parameter

also used in subclause 4.3 f) 3) in the criteria which C is applied. For these criteria, the

parameter α is not limited in the same way as for the determination of C according to 4.3 d).

For the criterion “Unless α > 100 mrad”, the angular subtense of the apparent source α is not

restricted by α . For non-uniform (oblong, rectangular, or linear) sources, the inequality

max

needs to be satisfied by both angular dimensions of the source in order for C = 1 to apply.

0,5 mrad
---------------------- Page: 10 ----------------------
SIST EN 60825-1:2014
– 4 – IEC 60825-1:2014/ISH1:2017
 IEC 2017
(α) and in the criteria “α ≤ 5 mrad”, “5 mrad < α ≤ α ”, and “α > α ”, the
To calculate T
2 max max

quantity α is limited to a maximum value of 100 mrad, equivalent to α that applies for

max

0,25 s emission duration and longer. For T and these inequalities, α is not limited to a value

of α (t) smaller than 100 mrad, and is therefore the same as the value that applies for the

max

determination of C for an emission duration of 0,25 s and longer. As is generally defined (see

subclause 4.3 d)) the arithmetic mean is applied to determine α, i.e. it is not necessary that

both dimensions satisfy the criterion “For α ≤ 5 mrad” independently.

For the determination of the applicable value of C in 4.3. f) 3) in an analysis of moving

apparent sources (originating from scanned emission when not accommodating to the pivot

point or vertex) the value of α in the respective inequalities relating to the choice of C in

4.3 f) 3) is determined for the stationary apparent source and the respective accommodation

condition that is analysed (such as accommodation to infinity).
5 Subclause 4.3 f) 3) groups of pulses with group duration longer than T

For non-uniform repetitive pulse patterns, i.e. groups of pulses (see Figure 2 for an example),

when α > 5 mrad and the duration of the group of pulses is longer than T , it is not clearly

stated how the thermal additivity expressed by requirement 3) of 4.3 f) is applied. For uniform

(i.e. constant peak power, duration and period) repetitive pulse trains, it is not necessary to

analyse the emission patterns in terms of groupings of pulses.

When individual pulses are close together, they are thermally grouped and thermally

represent one “effective” pulse so that C also (additionally to analysing the pulse train based

on the actual pulses and the average power) applies to these “effective” pulses, where N is

the number of pulse groups within T or within the time base, whichever is shorter.

group
Period of pulse within group
IEC

Figure 2 – Example of three groups of pulses (each group duration is longer than T )

where each group is considered as one “effective” pulse and C is applied to the AEL

that applies to the group duration, where C is determined with the number of pulse

groups within the evaluation duration (in the example of the figure N = 3)

For the analysis of pulse groups, the value of AEL is determined for the corresponding

single

pulse group duration t . For the determination of C , N is the number of pulse groups

group 5

within T or the time base, whichever is smaller. The respective value of C is applied to

2 5
to obtain AEL that limits the AE of the pulse groups, where AE is the sum of
AEL
single s.p.train
the energy of the pulses contained within the pulse group.

For the application of C to groups of pulses, the AEL(t ) applicable to the group needs to

5 group

be determined, as well as the energy per group (AE ). For groups of pulses where the

group

peak power of the pulses within the group varies, the group duration is not well defined. In

order to simplify the evaluation, t can be set equal to the integration duration for which

group
) was determined; it is not necessary to determine the group
the energy per group (i.e. AE
group

duration based on the FWHM criterion, which for groups of pulses with varying peak power is

not well defined. By setting t equal to the integration duration that is used to determine

group

AE (expressed as energy), the application of C to groups of pulses is a simple extension

group 5

of requirement 2) of 4.3 f) where the average power per group (equal to the energy within the

averaging duration t divided by the averaging duration) needs to be below the
average
AEL(t ) determined for the duration over which the power was averaged (AE and
average group
AEL(t ) expressed as power). As is common for the average power requirement, for
group

irregular pulse trains, the averaging duration window (when expressed as energy: the

Power
---------------------- Page: 11 ----------------------
SIST EN 60825-1:2014
IEC 60825-1:2014/ISH1:2017 – 5 –
 IEC 2017

integration duration window) has to be varied in temporal position and duration (for instance,

if there are pulses with relatively low energy per pulse at the beginning or the end of the

group of pulses, integration durations that exclude those low-energy pulses need to be

considered also, not only the total group).

If individual pulses have sufficient temporal spacing (period larger than T , see below), as a

crit

simplified analysis, they need not be considered for an analysis as a pulse group under

4.3 f) 3). The temporal spacing that is necessary for pulses to only be considered separate

(and not analysed additionally as a group) depends on the angular subtense of the apparent

source and the duration of the pulses t within the group. Note that there can be several

pulse

levels of grouping, so that individual elements (with pulse duration t) within the group could

themselves be “effective pulses”, i.e. subgroups.
When the
– pulse group (t ) durations are between T and 0,25 s, and
group i
– the angular subtense of the apparent source is larger than 5 mrad, and

– the period of the pulses (see Figure 2) is shorter than a critical period T (if t < T ,

crit pulse i
the value of t is set equal to T ; further, for the determination of T , α is
pulse i crit max
, not the group duration) where:
determined for t
pulse
for α ≤ α : T = 2∙t where t is in seconds
max crit pulse pulse
0,5
for α > α : T = 0,01 α t where t is in seconds, and α is in mrad, not being
max crit pulse pulse
limited to α ,
max

then these pulses constitute a pulse group which is treated as effective pulses and C (where

N is the number of groups within the time base or T , whichever is shorter) is applied to the

AEL applicable to the pulse group. For the determination of AE, α is determined using the

max

duration of the evaluated pulse group, t . If above conditions are not fulfilled, then the

group

pulses within the group of pulses that is considered to be analysed as “effective pulse” need

not be grouped, i.e. the group of pulses does not need to be analysed as one “effective”

pulse.

Note that if multiple pulses occur within T , the rule as stated in 4.3 f) 3) applies in parallel,

i.e. they are counted as a single pulse to determine N and the energies of the individual

pulses that occur within T are added to be compared to the AEL of T where the
i s.p.train i
corresponding C for emission durations t ≤ T is applied.
5 i
6 Subclause 4.3 f) simplifications
a) Constant peak power but shorter pulses

Depending on the angular subtense of the apparent source, it can be the case that the

value of C is more restrictive for pulses with pulse durations less than T than for pulses

5 i

with durations longer than T which is against general biophysical principles for cases

where the peak power is the same.
Interpretation

For the case of varying pulse duration within a pulse train, if the accessible emission for

pulses longer than T is below the applicable AEL, then it can be assumed for the analysis

that pulses with durations less than T but with the same (or lower) peak power as the

longer pulses, are less critical. The rationale for this interpretation follows the principle

that when pulses have the same peak power, the shorter pulse cannot be more restrictive

than the longer one.

NOTE This interpretation can also be used to smooth the step function at T for the classification of products,

i.e. the classification of a product may be based on the assumption of pulse durations longer than T even if

they are shorter than T provided that the longer pulses satisfy the applicable AEL and the shorter pulses have

the same or lower peak power compared to the longer pulses.
---------------------- Page: 12 ----------------------
SIST EN 60825-1:2014
– 6 – IEC 60825-1:2014/ISH1:2017
 IEC 2017
b) Larger image of apparent source

For emission durations exceeding T , due to the step-function of C at 5 mrad and at α ,

i 5 max

the AEL (as a function of C and C ) can be more restrictive for larger values of the

5 6

angular subtense of the apparent source as compared to smaller ones, which is contrary

to general biophysical principles.
Interpretation

When the class of a laser product is determined with the extended analysis (subclause

5.4.3) and the apparent source is larger than 5 mrad, the classification may be based on a

value of the angular subtense of the apparent source less than 5 mrad (resulting in a

smaller C but also larger C ). That is, when the AE is below the AEL for an assumed

6 5

smaller apparent source, the resulting class is applicable even though the image of the

apparent source is larger than 5 mrad. This also applies in an equivalent way to the step

function of C at α .
5 max
c) Using a square aperture stop

In some cases, such as 2D scanned laser beams, the use of a circular aperture stop to

determine the accessible emission creates very complex pulse patterns.
Interpretation

Analysis performed with a square aperture stop with 7 mm side length (for determination

of accessible emission and pulse duration) can be assumed to be equivalent to, or more

restrictive than, a circular aperture stop and is therefore a valid analysis.
d) Applicability of simplified default analysis

For pulse durations longer than T , the value of C is smaller (more restrictive) for angular

i 5
subtense values α larger than 5 mrad compared to α ≤ 5 mrad. The assumption of

α = 1,5 mrad is the basis of the simplified (default) evaluation. It is therefore not obvious if

the simplified (default) analysis still applies in terms of being a restrictive simplifying

analysis even for the case that the angular subtense of the apparent source is actually

larger than 5 mrad, where C < 1.
Interpretation

It is acceptable to make use of the simplified restrictive assumption of α = 1,5 mrad (C =

1, C = 1) even for the case that the angular subtense of the source is larger than 5 mrad.

This means it is not necessary to show that α < 5 mrad in order to apply C = 1 and C = 1

6 5

for the simplified (default) analysis, because overall this is a conservative simplification.

Note that the simplified default analysis implies that the determination of the accessible

emission is not limited by an angle of acceptance equal to α .
max
e) Determination of the most restrictive position

For the extended analysis, it is necessary to vary the position in the beam. For each

position in the beam, the accommodation is varied and the most restrictive image is

determined. For determining the most restrictive image (where the ratio AE/AEL is

maximum) at a given position, requirement 3) of 4.3 f) is not applied. Otherwise a blurred

(larger) image of the apparent source, resulting from variation of the accommodation,

could appear more restrictive, which is contrary to general biophysical principles. Once the

most restrictive image (and associated α) is identified for each position in the beam, all

three requirements 4.3 f) are applied to determine the most restrictive position (identifying

the position with the maximum ratio of AE/AEL).
f) Application of total-on-time-pulse method

For regular pulse trains, as well as for varying pulse durations and/or varying period of

pulses (but excluding strongly varying peak powers; see below), the total-on-time pulse

(TOTP) method (see also IEC 60825-1:2007, subclause 8.3 f) 3b)) may be used as

alternative to requirement 3) of 4.3 f), i.e. as alternative to the application of C to the

single pulse AEL, provided that α is determined for the TOTP (or using the worst case

max

value of 100 mrad). This is more restrictive than the rules of 4.3 f) because it is equivalent

to an unlimited C (C not limited to 0,2 or 0,4), and because the value of α is typically

5 5 max
larger for the TOTP as compared to the value applicable to the single pulse.
---------------------- Page: 13 ----------------------
SIST EN 60825-1:2014
IEC 60825-1:2014/ISH1:2017 – 7 –
 IEC 2017
For total-on-time-pulse (TOTP) method the following applies, as reproduced from
IEC 60825-1:2007.
The AEL is determined by the duration of the TOTP, which is the sum of all pulse

durations within the emission duration or T , whichever is smaller. Pulses with durations

less than T are assigned pulse durations of T . If two or more pulses occur within a

i i

duration of T these pulse groups are assigned pulse durations of T . For comparison with

i i
the AEL for the corresponding duration, all individual pulse energies are added.

Note that the TOTP method in IEC 60825-1:2007 (incl. Corrigendum 1) was specified “For

varying pulse widths or varying pulse intervals” and did not refer to varying peak powers.

For the case of strongly varying peak powers, the TOTP method is not applicable, as

adding pulses to the pulse train with small peak powers and low contributing energy-per-

pulse values might increase the AEL (by increasing the total-on-time) more than this

increases the total energy, and thus would make the emission less critical as compared to

an emission based on the pulses with the large peak power only.
g) Varying peak power but constant pulse duration

For varying peak power but constant pulse durations (both less than or larger than T ),

requirement 3) of 4.3 f) can be applied by counting the pulses for the determination of N

based on the relative peak power, i.e. N is increased by 1,0 for each pulse with the

maximum peak power, and by a value of less than 1,0 for pulses with lower peak power,

such as for a pulse with 70 % peak power compared to the maximum peak power in the

pulse train, N is increased by 0,7. For this, based on the strong non-linearity of thermally

induced injury with temperature, it is justified not to count pulses with peak powers that

are more than a factor of 10 below the pulse with the maximum peak power (i.e. less than

10 % of the maximum peak power). Note that the resulting AEL is applied to the
s.p.train

pulse with the largest AE, i.e. the largest energy per pulse, and that the interpretation in

this paragraph applies only for the case of pulse trains with constant pulse durations.

---------------------- Page: 14 ----------------------
...

SLOVENSKI STANDARD
SIST EN 60825-1:2014
01-oktober-2014
1DGRPHãþD
SIST EN 60825-1:2009
Varnost laserskih izdelkov - 1. del: Klasifikacija opreme in zahteve (IEC 60825-
1:2014)
Safety of laser products - Part 1: Equipment classification and requirements
Sicherheit von Lasereinrichtungen - Teil 1: Klassifizierung von Anlagen und
Anforderungen

Sécurité des appareils à laser - Partie 1: Classification des matériels et exigences

Ta slovenski standard je istoveten z: EN 60825-1:2014
ICS:
13.280 Varstvo pred sevanjem Radiation protection
31.260 Optoelektronika, laserska Optoelectronics. Laser
oprema equipment
SIST EN 60825-1:2014 en

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

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD EN 60825-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2014
ICS 13.110; 31.260 Supersedes EN 60825-1:2007
English Version
Safety of laser products - Part 1: Equipment classification and
requirements
(IEC 60825-1:2014)

Sécurité des appareils à laser - Partie 1: Classification des Sicherheit von Lasereinrichtungen - Teil 1: Klassifizierung

matériels et exigences von Anlagen und Anforderungen
(CEI 60825-1:2014) (IEC 60825-1:2014)

This European Standard was approved by CENELEC on 2014-06-19. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 60825-1:2014 E
---------------------- Page: 2 ----------------------
EN 60825-1:2014 - 2 -
Foreword

The text of document 76/502/FDIS, future edition 3 of IEC 60825-1, prepared by IEC/TC 76 "Optical

radiation safety and laser equipment" was submitted to the IEC-CENELEC parallel vote and approved

by CENELEC as EN 60825-1:2014.
The following dates are fixed:
– latest date by which the document has to be implemented at (dop) 2015-03-19
national level by publication of an identical national
standard or by endorsement
– latest date by which the national standards conflicting with (dow) 2017-06-19
the document have to be withdrawn
This document supersedes EN 60825-1:2007.

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

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

patent rights.
Endorsement notice

The text of the International Standard IEC 60825-1:2014 was approved by CENELEC as a European

Standard without any modification.
IEC 60027-1 NOTE Harmonised in EN 60027-1.
IEC 60065 NOTE Harmonised as EN 60065.
IEC 60079 (Series) NOTE Harmonised as EN 60079 (Series).
IEC 60204-1 NOTE Harmonised as EN 60204-1.
IEC 60601-2-22 NOTE Harmonised as EN 60601-2-22.
IEC 60825-2 NOTE Harmonised as EN 60825-2.
IEC 60825-4 NOTE Harmonised as EN 60825-4.
IEC 60825-12 NOTE Harmonised as EN 60825-12.
IEC 60950 (Series) NOTE Harmonised as EN 60950 (Series).
IEC 61010-1 NOTE Harmonised as EN 61010-1.
IEC 61508 (Series) NOTE Harmonised as EN 61508 (Series).
IEC 62115 NOTE Harmonised as EN 62115.
IEC 62368-1 NOTE Harmonised as EN 62368-1.
IEC/ISO 11553 (Series) NOTE Harmonised as EN ISO 11553 (Series).
ISO 11146-1 NOTE Harmonised as EN ISO 11146-1.
ISO 12100 NOTE Harmonised as EN ISO 12100.
ISO 13694 NOTE Harmonised as EN ISO 13694.
ISO 13849 (Series) NOTE Harmonised as EN ISO 13849 (Series).
ISO 15004-2:2007 NOTE Harmonised as EN ISO 15004-2:2007.
ISO 80000-1 NOTE Harmonised as EN ISO 80000-1.
---------------------- Page: 3 ----------------------
- 3 - EN 60825-1:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050 series International Electrotechnical Vocabulary - series
IEC 62471 (mod) - Photobiological safety of lamps and lamp EN 62471 -
systems
---------------------- Page: 4 ----------------------
IEC 60825-1
Edition 3.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ
Safety of laser products –
Part 1: Equipment classification and requirements
Sécurité des appareils à laser –
Partie 1: Classification des matériels et exigences
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XE
ICS 13.110; 31.260 ISBN 978-2-8322-1499-2

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 5 ----------------------
– 2 – IEC 60825-1:2014  IEC 2014
CONTENTS

FOREWORD ........................................................................................................................... 6

1 Scope and object ............................................................................................................. 8

2 Normative references .................................................................................................... 10

3 Terms and definitions .................................................................................................... 10

4 Classification principles ................................................................................................. 24

4.1 General ............................................................................................................ 24

4.2 Classification responsibilities ........................................................................... 24

4.3 Classification rules ........................................................................................... 24

4.4 Laser products designed to function as conventional lamps ............................. 29

5 Determination of the accessible emission level and product classification ...................... 29

5.1 Tests ............................................................................................................... 29

5.2 Measurement of laser radiation ........................................................................ 30

5.3 Determination of the class of the laser product................................................. 31

5.4 Measurement geometry.................................................................................... 40

5.4.1 General .......................................................................................... 40

5.4.2 Default (simplified) evaluation ......................................................... 41

5.4.3 Evaluation condition for extended sources ...................................... 42

6 Engineering specifications ............................................................................................. 44

6.1 General remarks and modifications .................................................................. 44

6.2 Protective housing ........................................................................................... 44

6.2.1 General .......................................................................................... 44

6.2.2 Service ........................................................................................... 45

6.2.3 Removable laser system ................................................................. 45

6.3 Access panels and safety interlocks ................................................................. 45

6.4 Remote interlock connector .............................................................................. 46

6.5 Manual reset .................................................................................................... 46

6.6 Key control ...................................................................................................... 46

6.7 Laser radiation emission warning ..................................................................... 47

6.8 Beam stop or attenuator ................................................................................... 47

6.9 Controls ........................................................................................................... 47

6.10 Viewing optics .................................................................................................. 47

6.11 Scanning safeguard ......................................................................................... 47

6.12 Safeguard for Class 1C products ..................................................................... 48

6.13 "Walk-in" access .............................................................................................. 48

6.14 Environmental conditions ................................................................................. 48

6.15 Protection against other hazards ...................................................................... 48

6.15.1 Non-optical hazards ........................................................................ 48

6.15.2 Collateral radiation ......................................................................... 49

6.16 Power limiting circuit ........................................................................................ 49

7 Labelling ........................................................................................................................ 49

7.1 General ............................................................................................................ 49

7.2 Class 1 and Class 1M ...................................................................................... 51

7.3 Class 1C .......................................................................................................... 52

7.4 Class 2 and Class 2M ...................................................................................... 53

7.5 Class 3R .......................................................................................................... 53

7.6 Class 3B .......................................................................................................... 54

---------------------- Page: 6 ----------------------
IEC 60825-1:2014  IEC 2014 – 3 –

7.7 Class 4 ............................................................................................................ 54

7.8 Aperture label .................................................................................................. 55

7.9 Radiation output and standards information ..................................................... 55

7.10 Labels for access panels .................................................................................. 56

7.10.1 Labels for panels ............................................................................ 56

7.10.2 Labels for safety interlocked panels ................................................ 57

7.11 Warning for invisible laser radiation ................................................................. 57

7.12 Warning for visible laser radiation .................................................................... 57

7.13 Warning for potential hazard to the skin or anterior parts of the eye ................. 57

8 Other informational requirements ................................................................................... 58

8.1 Information for the user .................................................................................... 58

8.2 Purchasing and servicing information ............................................................... 59

9 Additional requirements for specific laser products ........................................................ 60

9.1 Other parts of the standard series IEC 60825................................................... 60

9.2 Medical laser products ..................................................................................... 60

9.3 Laser processing machines .............................................................................. 60

9.4 Electric toys ..................................................................................................... 60

9.5 Consumer electronic products .......................................................................... 60

Annex A (informative) Maximum permissible exposure values .............................................. 61

A.1 General remarks .............................................................................................. 61

A.2 Limiting apertures ............................................................................................ 66

A.3 Repetitively pulsed or modulated lasers ........................................................... 67

A.4 Measurement conditions .................................................................................. 68

A.4.1 General .......................................................................................... 68

A.4.2 Limiting aperture ............................................................................. 68

A.4.3 Angle of acceptance ....................................................................... 68

A.5 Extended source lasers .................................................................................... 69

Annex B (informative) Examples of calculations ................................................................... 70

B.1 Symbols used in the examples of this annex .................................................... 70

B.2 Classification of a laser product – Introduction ................................................. 71

B.3 Examples ......................................................................................................... 75

Annex C (informative) Description of the classes and potentially associated hazards ........... 80

C.1 General ............................................................................................................ 80

C.2 Description of classes ...................................................................................... 80

C.2.1 Class 1 ........................................................................................... 80

C.2.2 Class 1M ........................................................................................ 80

C.2.3 Class 1C ......................................................................................... 80

C.2.4 Class 2 ........................................................................................... 81

C.2.5 Class 2M ........................................................................................ 81

C.2.6 Class 3R ......................................................................................... 81

C.2.7 Class 3B ......................................................................................... 82

C.2.8 Class 4 ........................................................................................... 82

C.2.9 Note on nomenclature ..................................................................... 82

C.3 Limitations of the classification scheme ........................................................... 84

C.4 References ...................................................................................................... 85

Annex D (informative) Biophysical considerations ................................................................ 86

D.1 Anatomy of the eye .......................................................................................... 86

D.2 The effects of laser radiation on biological tissue ............................................. 87

---------------------- Page: 7 ----------------------
– 4 – IEC 60825-1:2014  IEC 2014

D.2.1 General .......................................................................................... 87

D.2.2 Hazards to the eye ......................................................................... 89

D.2.3 Skin hazards ................................................................................... 92

D.3 MPEs and irradiance averaging ....................................................................... 93

D.4 Reference documents ...................................................................................... 93

Annex E (informative) MPEs and AELs expressed as radiance ........................................... 95

E.1 Background ...................................................................................................... 95

E.2 Radiance values .............................................................................................. 95

E.3 Rationale ......................................................................................................... 96

Annex F (informative) Summary tables................................................................................. 99

Annex G (informative) Overview of associated parts of IEC 60825 ..................................... 102

Bibliography ........................................................................................................................ 104

Figure 1 – Measurement set-up to limit angle of acceptance by imaging the apparent

source onto the plane of the field stop .................................................................................. 43

Figure 2 – Measurement set-up to limit angle of acceptance by placing a circular

aperture or a mask (serving as field stop) close to the apparent source ................................ 43

Figure 3 – Warning label – Hazard symbol ............................................................................ 50

Figure 4 – Explanatory label ................................................................................................. 51

Figure 5 – Alternative label for Class 1 ................................................................................. 52

Figure 6 – Alternative label for Class 1M ............................................................................... 52

Figure 7 – Alternative label for Class 1C ............................................................................... 52

Figure 8 – Alternative label for Class 2 ................................................................................. 53

Figure 9 – Alternative label for Class 2M ............................................................................... 53

Figure 10 – Alternative label for Class 3R ............................................................................. 54

Figure 11 – Alternative label for Class 3B ............................................................................. 54

Figure 12 – Alternative label for Class 4 ............................................................................... 55

Figure 13 – Alternative label for laser aperture ..................................................................... 55

Figure B.1 – Flowchart guide for the classification of laser products from supplied

output parameters ................................................................................................................. 72

Figure B.2 – Flowchart guide for the classification of Class 1M and Class 2M laser

products................................................................................................................................ 73

Figure B.3 – AEL for Class 1 ultra-violet laser products for selected emission durations

–9 3

from 10 s to 10 s ............................................................................................................. 74

Figure B.4 – AEL for Class 1 ultra-violet laser products for emission durations from 10 s

to 10 s at selected wavelengths .......................................................................................... 74

Figure B.5 – AEL for Class 1 visible and selected infra-red laser products (case C = 1) ..... 75

Figure D.1 – Anatomy of the eye ........................................................................................... 86

Figure D.2 – Diagram of laser-induced damage in biological systems ................................... 88

Figure E.1 – Radiance as a function of wavelength ............................................................... 95

Table 1 – Additivity of effects on eye and skin of radiation of different spectral regions ......... 25

Table 2 – Times below which pulse groups are summed ....................................................... 28

Table 3 – Accessible emission limits for Class 1 and Class 1M laser products and

C = 1................................................................................................................................... 34

---------------------- Page: 8 ----------------------
IEC 60825-1:2014  IEC 2014 – 5 –

Table 4 – Accessible emission limits for Class 1 and Class 1M laser products in the

wavelength range from 400 nm to 1 400 nm (retinal hazard region): extended sources ......... 35

Table 5 – Accessible emission limits for Class 2 and Class 2M laser products ...................... 36

Table 6 – Accessible emission limits for Class 3R laser products and C = 1 ........................ 37

Table 7 – Accessible emission limits for Class 3R laser products in the wavelength

range from 400 nm to 1 400 nm (retinal hazard region): extended sources .......................... 38

Table 8 – Accessible emission limits for Class 3B laser products .......................................... 39

Table 9 – Correction factors and breakpoints for use in AEL and MPE evaluations ............... 39

Table 10 – Measurement aperture diameters and measurement distances for the

default (simplified) evaluation ............................................................................................... 41

Table 11 – Reference points for Condition 3 ......................................................................... 42

Table 12 – Limiting angle of acceptance γ ......................................................................... 43

Table 13 – Requirements for safety interlocking .................................................................... 45

Table A.1 – Maximum permissible exposure (MPE) for C = 1 at the cornea expressed

as irradiance or radiant exposure .......................................................................................... 62

Table A.2 – Maximum permissible exposure (MPE) at the cornea for extended sources

in the wavelength range from 400 nm to 1 400 nm (retinal hazard region) expressed as

irradiance or radiant exposure ............................................................................................. 63

Table A.3 – Maximum permissible exposure (MPE) of Table A.1 (C = 1) for the
a, b

wavelength range from 400 nm to 1 400 nm expressed as power or energy ................... 64

Table A.4 – Maximum permissible exposure (MPE) of Table A.2 (extended sources)
a, b,
for the wavelength range from 400 nm to 1 400 nm expressed as power or energy
c, d, e, f, g

............................................................................................................................ 65

Table A.5 – Maximum permissible exposure (MPE) of the skin to laser radiation ................... 66

Table A.6 – Aperture diameters for measuring laser irradiance and radiant exposure ........... 67

Table D.1 – Summary of pathological effects associated with excessive exposure to light ... 90

Table D.2 – Explanation of measurement apertures applied to the eye MPEs ....................... 93

Table E.1 – Maximum radiance of a diffused source for Class 1 ............................................ 96

Table F.1 – Summary of the physical quantities used in this Part 1 ....................................... 99

Table F.2 – Summary of manufacturer's requirements (1 of 2) ............................................ 100

Table G.1 – Overview of additional data in associated parts of IEC 60825 .......................... 103

---------------------- Page: 9 ----------------------
– 6 – IEC 60825-1:2014  IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY OF LASER PRODUCTS –
Part 1: Equipment classification and requirements
FOREWORD

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60825-1 has been prepared by IEC technical committee 76:

Optical radiation safety and laser equipment.

This third edition of IEC 60825-1 cancels and replaces the second edition published in 2007.

It constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
• a new
...

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