1、BS EN 207:2017Personal eye-protection equipment Filters andeye-protectors against laser radiation (laser eye-protectors)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 207:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of E
2、N 207:2017. It supersedes BS EN 207:2009 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PH/2/3, Eye protection against lasers.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not p
3、urport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 93107 9 ICS 13.340.20 Compliance with a British Standard cannot confer immunity from legal obl
4、igations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 207:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 207 March 2017 ICS 13.340.20 S
5、upersedes EN 207:2009English Version Personal eye-protection equipment - Filters and eye-protectors against laser radiation (laser eye-protectors) Protection individuelle de loeil - Filtres et protecteurs de loeil contre les rayonnements laser (lunettes de protection laser) Persnlicher Augenschutz -
6、 Filter und Augenschutzgerte gegen Laserstrahlung (Laserschutzbrillen) This European Standard was approved by CEN on 8 August 2016. 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 stan
7、dard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in a
8、ny other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Rep
9、ublic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
10、 EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 207:2017 EB
11、S EN 207:2017EN 207:2017 (E) 2 Contents Page European foreword . 5 1 Scope 6 2 Normative references 6 3 Requirements . 6 3.1 Spectral transmittance of filters and frames 6 3.2 Luminous transmittance of filters 6 3.3 Resistance of filters and frames to laser radiation . 7 Table 1 Scale numbers (maxim
12、um spectral transmittance and resistance to laser radiation) of the filters and/or eye-protectors against laser radiations 7 3.4 Refractive values of filters and eye-protectors 7 Table 2 Maximum refractive values of filters and eye-protectors with no corrective effect . 8 3.5 Quality of material and
13、 surface of filters 8 3.5.1 Material and surface defects . 8 3.5.2 Diffusion of light 8 3.6 Stability of filters and eye-protectors to ultraviolet radiation and elevated temperature 8 3.6.1 Stability to ultraviolet radiation 8 3.6.2 Stability at elevated temperature . 8 3.7 Resistance of filters and
14、 frames to ignition by contact with hot surfaces 9 3.8 Field of vision of eye-protectors 9 3.9 Construction of filters and frames 9 3.10 Mechanical strength of eye-protectors . 9 3.10.1 Basic requirement 9 3.10.2 Optional requirements 9 4 Testing . 9 4.1 General 9 Table 3 Test schedule for filters,
15、frames and complete eye-protectors for protection against laser radiation . 10 4.2 Spectral transmittance of filters and frames . 11 4.3 Luminous transmittance of filters . 11 4.4 Resistance of filters and frames to laser radiation 11 Table 4 Duration of test for filters and eye-protectors against l
16、aser radiation . 11 4.5 Refractive value of filters and eye-protectors . 12 4.6 Quality of material and surface of filters . 12 4.6.1 Material and surface defects 12 4.6.2 Diffusion of light . 12 4.7 Stability to UV radiation and stability to elevated temperature . 12 4.7.1 Stability to UV radiation
17、 12 4.7.2 Stability to elevated temperature 12 4.8 Resistance of filters and frames to ignition by contact with hot surfaces . 12 4.9 Field of vision of eye-protectors . 12 Figure 1 Example of test set-up for the measurement of field of vision 13 BS EN 207:2017EN 207:2017 (E) 3 4.10 Determination of
18、 the protected range 13 4.11 Frames 14 4.12 Mechanical strength 14 5 Information supplied by the manufacturer 14 6 Marking 14 6.1 Eye-protectors . 14 6.2 Filters 16 Annex A (informative) Principle 17 A.1 Limit values and time base 17 Table A.1 Simplified maximum permissible irradiation values for th
19、e cornea 17 Figure A.1 Comparison of the limit values specified in EU 2006/25/EC and the simplified values of EN 207 18 A.2 Beam areas 18 A.3 Angle dependence 18 A.4 Example test report . 19 Table A.2 Test report 19 Annex B (informative) Recommendations for the use of laser radiation eye-protectors
20、. 21 B.1 General . 21 B.2 Types of lasers . 21 Table B.1 Recommended scale numbers for use of filters and eye-protectors against laser radiation 22 B.3 Determination of the scale numbers . 22 B.3.1 General . 22 B.3.2 Continuous wave laser (D) 23 B.3.3 Pulsed lasers (I, R), pulse duration 109s 23 B.3
21、.3.1 General . 23 B.3.3.2 Calculation for the pulsed mode . 23 Table B.2 Periods of time Tibelow which energies of single pulses have to be added and maximum pulse repetition frequencies vmax= 1/Tifor the application of formula (B.4) . 24 B.3.3.3 Calculation for the average power . 24 B.3.4 Mode cou
22、pled lasers (M), pulse duration 1 400 nm . 24 B.3.4.3 Calculation for the average power . 25 B.4 Time base. 25 B.5 Filters in appliances. 25 BS EN 207:2017EN 207:2017 (E) 4 Annex C (informative) Significant technical changes between this European Standard and the previous editions 26 Annex ZA (infor
23、mative) Relationship between this European Standard and the essential requirements of Directive 89/686/EEC aimed to be covered . 27 Table ZA.1 Correspondence between this European Standard and Directive 89/686/EEC 27 Bibliography . 28 BS EN 207:2017EN 207:2017 (E) 5 European foreword This document (
24、EN 207:2017) has been prepared by Technical Committee CEN/TC 85 “Eye protective equipment”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 201
25、7, and conflicting national standards shall be withdrawn at the latest by September 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This docume
26、nt supersedes EN 207:2009. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 89/686/EEC. For relationship with EU Directive 89/686/EEC, see informative Annex ZA, which i
27、s an integral part of this document. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugosl
28、av Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 207:2017EN 207:2017 (E) 6 1 Scope Th
29、is European Standard applies to eye-protectors used for protection against accidental exposure to laser radiation as defined in EN 60825-1:2007 in the spectral range 180 nm (0,18 m) to 1 000 m. It defines the requirements, test methods and marking. A guide is given in the informative Annex B for the
30、 selection and use of laser eye-protectors and filters in appliances. This European Standard does not apply to protectors for intentional exposure to laser radiation. EN 208 applies for laser adjustment eye-protectors. Before selecting eye protection according to this European Standard, a risk asses
31、sment should first be undertaken (see Annex B). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition
32、 of the referenced document (including any amendments) applies. EN 166:2001, Personal eye-protection - Specifications EN 167:2001, Personal eye-protection - Optical test methods EN 168:2001, Personal eye-protection - Non-optical test methods EN 60825-1:2007, Safety of laser products - Part 1: Equipm
33、ent classification and requirements (IEC 60825-1:2007) ISO 11664-1:2007, Colorimetry - Part 1: CIE standard colorimetric observers ISO 11664-2:2007, Colorimetry - Part 2: CIE standard illuminants 3 Requirements 3.1 Spectral transmittance of filters and frames When tested according to 4.2, the maximu
34、m spectral transmittance at the wavelength(s) or in the wavelength range(s) of protection shall not exceed the values specified in Table 1 for the applicable scale number. 3.2 Luminous transmittance of filters When assessed in accordance with 4.3, the luminous transmittance of the filter relative to
35、 the D65 standard illuminant (see ISO 11664-2:2007) shall be at least 20 %. However, luminous transmittance lower than 20 % may be accepted provided that the manufacturer supplies information related to the increase of the intensity of illumination at the relevant workplace in accordance with Clause
36、 5. BS EN 207:2017EN 207:2017 (E) 7 3.3 Resistance of filters and frames to laser radiation When tested according to 4.4, the filters and frames shall meet the requirements of 3.1 and shall not lose their protective effect under the influence of laser radiation of the power (E)/ energy density (H) a
37、s specified in Table 1 and shall not show any induced transmission (reversible bleaching). No splinters 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 during the course of irradiation is not considered
38、 negative if the protective effect is still maintained. Table 1 Scale numbers (maximum spectral transmittance and resistance to laser radiation) of the filters and/or eye-protectors against laser radiations Maximum spectral transmittance at the laser wavelength Power (E) / energy density(H) for test
39、ing the protective effect and resistance to laser radiation in the wavelength range 180 nm to 315 nm 315 nm to 1 400 nm 1 400 nm to 1 000 m For test condition/pulse duration in seconds (s) Scale number D 3 104 I, R 109to 3 104M 5 104I, R 109to 5 104M 0,1 I, R 109to 0,1 M 106to 0,25 109to 10660 %, an
40、d then stored for at least 2 h at room temperature. 4.8 Resistance of filters and frames to ignition by contact with hot surfaces The test shall be carried out in accordance with Clause 7 of EN 168:2001. 4.9 Field of vision of eye-protectors For measuring the field of vision, the test head specified
41、 in EN 168:2001 with the eye-protector without filters shall be mounted as shown in the example of set up illustrated in Figure 1 so that the two axes of rotation A and B and the optical axis C intersect in the middle of the front surface of one eye. Irradiation is provided by a laser beam of diamet
42、er (1 0,5) mm along axis C. When rotated around axis A, the BS EN 207:2017EN 207:2017 (E) 13 difference in the angular positions at which the light beam no longer hits the eye gives the vertical field of vision. By rotating around axis B, the difference between the angular position at which the ligh
43、t beam no longer hits the eye and the line of vision of the test head parallel to the optical axis C gives half the horizontal field of vision. Other methods are permissible if they give identical results. Key 1 Laser A, B, C Axis (see text) Figure 1 Example of test set-up for the measurement of fie
44、ld of vision 4.10 Determination of the protected range Using the apparatus as given in 4.9 the scan shall verify that the eye-protector covers at least the range as defined by the limits uand l. BS EN 207:2017EN 207:2017 (E) 14 4.11 Frames 4.11.1 It shall be tested by means of manual and visual insp
45、ection whether the filters are interchangeable. 4.11.2 The test shall be carried out using the method given in 4.9. The zero values of the angles and are reached when the axis A, B and C of the test apparatus are perpendicular to each other. 4.12 Mechanical strength The test shall be carried out in
46、accordance with Clause 4 of EN 168:2001. 5 Information supplied by the manufacturer In addition to the requirements of EN 166:2001, Clause 10, the selection criteria and instructions for use shall contain at least the following: a) luminous transmittance; b) if the luminous transmittance is less tha
47、n 20 %, this shall be indicated and the user shall be recommended to increase the intensity of illumination at the workplace; c) in the case of tinted and coloured filters a warning to the user that the recognition of warning lights or warning signals can be impaired; d) the information that eye-pro
48、tectors are only intended to give protection against accidental radiation and that both the limit values and the resistance tests are based on a maximum period of 5 s; e) a warning that eye-protectors and filters against laser radiation which have been damaged, have scratched oculars or which have u
49、ndergone a colour change shall not be used anymore; f) an explanation of the symbols used in the marking; g) details regarding an appropriate cleaning method; h) in case of filters with angle dependent transmittance an information shall be given that the protection is only provided for angles of incidence up to 30. Instructions shall include a warning of risk of exposure to laser radiation due to reflection from reflective parts (including eye-protectors), tilting or misalignment of optical components. Instructions sh
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