NEN EN ISO 8980-3 : 2013
Current
The latest, up-to-date edition.
OPHTHALMIC OPTICS - UNCUT FINISHED SPECTACLE LENSES - PART 3: TRANSMITTANCE SPECIFICATIONS AND TEST METHODS
12-01-2013
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Requirements
5.1 General
5.2 General transmittance requirements
5.3 Requirements for driving
5.4 Transmittance requirements for special types spectacle
lenses
5.5 Resistance to radiation
6 Testing
6.1 General
6.2 Spectral transmittance
6.3 Luminous transmittance and relative visual attenuation
coefficient (quotient)
6.4 Ultraviolet transmittance
6.5 Transmittance properties of photochromic spectacle
lenses and photochromic specimens
6.6 Test methods for polarizing spectacle lenses
6.7 Determination of resistance to radiation
7 Information
Annex A (normative) Spectral weighting functions for
calculating relative visual attenuation
quotients
Annex B (normative) Calculation of solar UV transmittance
values
Annex C (informative) Spectral radiation risks
Bibliography
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