BS EN ISO 8980-3:2013

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Classification
6 Requirements
7 Test methods
8 Identification
Annex A (normative) - Spectral data for calculating
        relative visual attenuation quotients for
        incandescent signal lights
Annex B (normative) - Calculation of solar UV
        transmittance values
Annex C (normative) - Cut-on filter for UV filtering
Annex D (informative) - Spectral data for calculating
        relative visual attenuation quotients for LED
        signal lights
Annex E (informative) - Spectral radiation risks
Annex F (informative) - Example of the calculation of luminous
        transmittance, tau[V]
Bibliography

Describes requirements for the transmittance properties of uncut finished spectacle lenses and mounted pairs, including attenuation of solar radiation.

This part of ISO8980 specifies requirements for the transmittance properties of uncut finished spectacle lenses and mounted pairs, including attenuation of solar radiation.

This part of ISO8980 is not applicable to

• spectacle lenses having particular transmittance or absorption characteristics prescribed for medical reasons;

• products where specific personal protective equipment transmittance standards apply;

• products intended for direct observation of the sun, such as for solar-eclipse viewing.

NOTE Optical and geometric requirements for uncut finished spectacle lenses are specified in ISO8980-1 andISO8980-2, and for mounted lenses, in ISO21987.