BS EN 172:1995:2002 Edition
$102.76
Specification for sunglare filters used in personal eye-protectors for industrial use
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 20 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British�Standard |
| 3 | Short Contents |
| 6 | Foreword Foreword to Amendment A1 Foreword to Amendment A2 |
| 7 | Contents |
| 8 | 1 Scope 2 Normative references 3 Designation and marking 4 Requirements 4.1 Permissible transmittance and scale numbers 4.2 General transmittance requirements |
| 9 | Table 1 – Permissible transmittance for filters without a requirement for infra-red protection Table 2 – Permissible transmittance for filters with a requirement for infra-red protection 4.3 Special transmittance requirements |
| 10 | 5 Test method 5.1 Permissible transmittance and scale numbers 5.2 General transmittance requirements 5.3 Special transmission requirements |
| 11 | Table 3 – Irradiance for testing the darkened state of photochromic lenses Table 4 – Measurement conditions for the different luminous transmittance values |
| 12 | 6 Filters not suitable for driving and road use Figure 1 – Symbol “Not suitable for driving and road use” |
| 13 | Annex A (informative) Use of sunglare filters A.1 Daytime A.2 Reduced light A.3 Reduction of reflection |
| 14 | A.4 Photochromic sunglare filters A.5 Polarizing sunglare filters Annex B (normative) Definitions B.1 Scale number B.2 Relative visual attenuation quotient |
| 15 | B.3 Infra-red transmittance |
| 16 | Annex C (normative) Standard illuminant D |
| 17 | Annex D (normative) Test for determining the axis of polarization Figure D.1 – Apparatus for determination of axis polarization D.1 Apparatus D.2 Procedure |
| 18 | Annex E (informative) Test for determination of fatigue of photochromic materials E.1 Apparatus E.2 Preparation of samples E.3 Procedure E.4 Evaluation Annex F (informative) |
| 19 | Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provis… |
