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1、BRITISH STANDARD BS EN 207:1999 Incorporating Amendment No. 1 and Corrigendum No. 1 Personal eye-protection Filters and eye-protectors against laser radiation (laser eye-protectors) The European Standard EN 207:1998, with the incorporation of amendment A1:2002, has the status of a British Standard I
2、CS 13.340.20 ? BS EN 207:1999 This British Standard, having been prepared under the direction of the Health and Environment Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 March 1999 BSI 27 October 2004 ISBN 0 580 30718 2 National foreword T
3、his British Standard is the official English language version of EN 207:1998, including amendment A1:2002 and Corrigendum September 2004. It supersedes BS EN 207:1994 which is withdrawn. NOTEThe poor quality of Figure A.1 was noticed when the English language version of amendment A1:2002 to EN 207:1
4、998 was incorporated into the national standard. The error has been reported to CEN in a proposal to amend the figure supplied in amendment A1:2002 to the European Standard. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes t
5、o CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“. The UK participation in its preparation was entrusted by Technical Committee PH/2, Eye protection, to Subcommittee PH/2/3, Eye protection against lasers, which has the responsibility t
6、o: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “Internatio
7、nal Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Olnine. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British
8、 Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European develo
9、pments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 17 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication
10、 Amd. No.DateComments 1411931 January 2003See national foreword 15399 Corrigendum No. 1 27 October 2004Replacement of Table B.2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 207 September 1998 + A1 August 2002 ICS 13.340.20Incorporating corrigendum September 2004 Supersedes EN 207:1993 Descri
11、ptors: accident prevention, eyes, safety devices, filters, safety, radiation protection, laser radiation, specifications, transmittance, maximale value, tests, stability, marking, technical notices English version Personal eye-protection Filters and eye-protectors against laser radiation (laser eye-
12、protection) (includes amendment A1:2002) Protection individuelle de loeil Filtres et protecteurs de loeil contre les rayonnements laser (lunettes de protection laser) (inclut lamendement A1:2002) Persnlicher Augenschutz Filter und Augenschutzgerte gegen Laserstrahlung (Laserschutzbrillen) (enthlt nd
13、erung A1:2002) This European Standard was approved by CEN on 24 August 1998. Amendment A1 was approved by CEN on 30 May 2002. 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 w
14、ithout 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 languag
15、e 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Ice
16、land, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exp
17、loitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 207:1998 + A1:2002 E EN 207:1998 BSI 27 October 20042 Foreword This European Standard has been prepared by Technical Committee CEN/TC 85, Eye protective equipment, the Secretariat of which is held by AFNO
18、R. This European Standard supersedes EN 207:1993. 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 March 1999, and conflicting national standards shall be withdrawn at the latest by March 1999. Thi
19、s European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this standard.
20、Annex A, Annex B and Annex ZA are informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Irela
21、nd, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A1 This amendment EN 207:1998/A1:2002 to the EN 207:1998 has been prepared by Technical Committee CEN/TC 85, Eye protective equipment, the Secretariat of which is held by AF
22、NOR. This amendment to the European Standard EN 207:1998 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2003, and conflicting national standards shall be withdrawn at the latest by February 2003. This amendmen
23、t to the European Standard EN 207:1998 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). According to the CEN/CENELEC Internal Regulations, the national standards organizations of
24、 the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1
25、Scope3 2Normative references3 3Requirements3 4Testing6 5Information supplied by the manufacturer10 6Marking10 Annex A (informative) Principles12 Annex B (informative) Recommendations for the use of laser radiation eye-protectors13 Annex ZA (informative) Clauses of this European Standard addressing e
26、ssential requirements or other provisions of EU Directives17 EN 207:1998 BSI 27 October 2004 3 1 Scope This European Standard applies to eye-protectors used for protection against laser radiation as defined in EN 60825-1:1994 i.e. LED (light emitting diode) radiation is included in the spectral rang
27、e 180 nm (0,18 4m) to 1 000 4m. It defines requirements, test methods and marking. A guide is given in Annex B with regard to selection and use. EN 208 applies for laser adjustment eye-protectors. NOTEBefore selecting eye-protection according to this standard a risk assessment should be undertaken (
28、see Annex B). 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendment
29、s to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 166:1995, Personal eye-protection Specifications. EN 167:1995, Personal eye-prote
30、ction Optical test methods. EN 168:1995, Personal eye-protection Non-optical test methods. EN 208, Personal eye-protection Eye-protectors for adjustment work on lasers and laser systems (laser adjustment eye-protectors). EN 60825-1:1994, Safety of laser products Part 1: Equipment classification, req
31、uirements and users guide. ISO/CIE 10526:1991, CIE standard colorimetric illuminants. ISO/CIE 10527:1991, CIE standard colorimetric observers. 3 Requirements 3.1 Spectral transmittance of filters and frames When tested according to 4.1, the maximum spectral transmittance for the individual scale num
32、bers which shall not be exceeded at the laser wavelength(s) against which they afford protection shall be as given in Table 1. 3.2 Luminous transmittance of filters When assessed in accordance with 4.2, the luminous transmittance of the filter relative to the D65 standard illuminant (see ISO/CIE 105
33、26:1991) shall be at least 20 %, unless it is recommended in the information supplied by the manufacturer to increase accordingly by the intensity of illumination at the relevant workplace. 3.3 Stability of filters and frames to laser radiation When tested according to 4.3, the filters and frames sh
34、all meet the requirements of 3.1 and shall not lose their protective effect under the influence of laser radiation of the power (E) or energy density (H) given in Table 1 for a period of at least 10 s and for 100 pulses and shall not show any induced transmission (reversible bleaching). No splinters
35、 shall come away from the side of the filter facing the eye under the influence of the laser radiation. Any melting or other damage of the surface is not considered negative if the protective effect is still ensured. EN 207:1998 4 BSI 27 October 2004 ! Table 1 Scale numbers (maximum spectral transmi
36、ttance and stability to laser radiation) of the filters and/or eye-protectors against laser radiations “ 3.4 Refractive values of filters and eye-protectors When assessed in accordance with 4.4, the maximum refractive values of filters and eye-protectors with no corrective effect shall be as given i
37、n Table 2. They apply to the range specified in 7.1.2 of EN 166:1995. NOTEThe requirements of the national standards apply to laser radiation protection filters with a corrective effect up until such times as corresponding European Standards have been prepared. Table 2 Maximum refractive values of f
38、ilters and eye-protectors with no corrective effect 3.5 Quality of material and surface of filters 3.5.1 Material and surface defects The material and surface defects of filters shall be assessed in accordance with 4.5.1. Except for a marginal area 5 mm wide, filters shall be free from any material
39、or surface defects likely to impair the intended use, such as bubbles, scratches, inclusions, dull spots, mould marks, scoring or other defects originating from the manufacturing process. No holes are allowed anywhere in the filters. 3.5.2 Scattered light The reduced luminous coefficient l* of a fil
40、ter, determined in accordance with 4.5.2, shall not be greater than: l* = 0,50 (cd/m2)/lx Scale number Maximum spectral transmittance at the laser wavelength E(2) Power (E) and energy (H) density for testing the protective effect and stability to laser radiation in the wavelength range 180 nm to 315
41、 nm 315 nm to 1 400 nm 1 400 nm to 1 000 4 4m D U3 104 I, R 109 to 3 104 M 5 104 I, R 109 to 5 104 M 0,1 I, R 109 to 0,1 M 5 10p4 to 10 10 0,1 to 101 000 315 nm to 1 400 nm 1 400 nm to 1 000 4 4m Laser type/exposure duration in s D U3 104 I, R 109 to 3 104 M 5 104 I, R 109 to 5 104 M 0,1 I, R 109 to
42、 0,1 M 0,25 IPulsed laser106 to 0,25 RGiant-pulsed laser109 to 106 MMode-coupled pulsed laser109 E = P A - - EN 207:1998 BSI 27 October 2004 15 B.2.2 Pulsed lasers According to EN 60825-1:1994, the maximum permissible exposure for wavelengths from 400 nm to 106nm is determined by using the most rest
43、rictive of requirements a), b) and c) as appropriate. For wavelengths smaller than 400 nm the permissible exposure is determined by using the most restrictive of requirements a) and b). a) The exposure from any single pulse within a pulse train shall not exceed the permissible exposure for a single
44、pulse. b) The average power for a pulse train of duration T shall not exceed the power corresponding to the permissible exposure for a single pulse of duration T. c) The exposure from any single pulse within a pulse train shall not exceed the permissible exposure for a single pulse multiplied by the
45、 correction factor C5. C5 is only applicable to pulse durations shorter than 0,25 s. If the pulse repetition frequency of the laser is , then the total number N of pulses within an exposure duration T, which in this standard is taken to be 10 s, is: N = 10 s According to this, in the case of pulsed
46、lasers the scale number has to be evaluated according to B.2.2.1 or B.2.2.2 and additionally according to B.2.1. These two evaluations will in many cases lead to different scale numbers. The higher of the two scale numbers shall be used. B.2.2.1 Pulse duration U10p9 s (I and R) The energy density H
47、of the laser beam is calculated from the pulse energy Q and the beam cross section A as follows: For lasers in the wavelength range 400 nm to 1 400 nm, this value of the energy density shall be multiplied by N!: H = H N! Then, for H, the necessary scale number shall be taken from column I or R (see
48、Table B.1) corresponding to the wavelength and type of laser. B.2.2.2 Mode-coupled lasers: pulse duration 10p9 s (M) The calculation can be done as defined in B.2.1 using the peak power of the individual pulses for laser power P. In addition, calculate H as described in B.2.2 for lasers in the wavelength range 400 nm to 1 400 nm and read off the required scale number. B.3 Time base The laser radiation eye-protectors specified in Table B.1 are not suitable for continuous exposure to a laser beam. The protection has been designed on the basis of 10 s with regard to transmiss