BS EN 208:2009 pdf free.Personal eye-protection—Eye-protectors for adjustment work on lasers and laser systems (laser adjustment eye-protectors).
BS EN 208 This European Standard applies to laser adjustment filters and eye-protectors, These are filters and eye- protectors for use in adjustment work on lasers and laser systems as defined in EN 60825-1:2007 where hazardous radiation occurs in the visible spectral range of 400 nm to 700 nm. Filters specified in this European Standard reduce this radiation to values defined for lasers of class 2 (S 1 mW for CW (continuous wave) lasers).
This European Standard defines the requirements, test methods and marking. A guide is given in Annex B with regard to selection and use.
EN 207 applies to eye-protection against accidental exposure to laser radiation.
NOTE Before selecting eye protection according to this European Standard a risk assessment should first be
undertaken (see Annex B).
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 166:2001, Personal eye-protection — Specifications
EN 167:2001, Personal eye-protection — Opticaltest methods
EN 168:2001. Personal eye-protection — Non-optical test methods
EN 207:2009, Personal eye-protection equipment — Filters and eye-protectors agans laser radiation iaser eye-protectors)
ISO 11664-1:2007, Calorimetry — Part 1: CIE standard calorimetric observers ISO 11664-2:2007, Calorimetry — Part 2: CIE standard illuminants
Spectral transmittance of filters and frames
When tested according to 4.2, the spectral transmittance values of the filters and the frames for the laser wavelength shall be as given in Table 1.
When tested 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 % can 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.BS EN 208 pdf download.