BS EN 207:2017 pdf free.Personal eye-protection equipment一Filters and eye-protectors against laser radiation (laser eye-protectors).
BS EN 207 This 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 um) to 1 000 pum. It defines the requirements, test methods and marking.A guide is given in the informative Annex B for the 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 assessment 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 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: Equipment calsification 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 iluminants.3.1 Spectral transmittance of filters and frames When tested according to 4.2, the maximum 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 the D65
standard iluminant (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 ilumination at the relevant workplace in accordance with Clause 5.When assessed in accordance with 4.5, the maximum refractive values of filters and eye- protectors with no corrective effect shall be as given in Table 2. The maximum refractive values apply to the range specified in 7.1.2.1 of EN 166:2001.BS EN 207 pdf download.