Označení normy: | ČSN EN ISO 8980-3 |
Třídící znak: | 195105 |
Počet stran: | 48 |
Vydáno: | 01.01.2023 |
Harmonizace: | Norma není harmonizována |
Katalogové číslo: | 516032 |
DESCRIPTION
ČSN EN ISO 8980-3
This document specifies requirements for the transmittance properties of uncut and unmounted finished spectacle lenses, including attenuation of solar radiation. This document is not applicable to - spectacle lenses having specific transmittance or absorption characteristics prescribed for medical reasons, - products to which specific personal protective equipment transmittance standards apply, and - products intended for direct observation of the sun, such as for solar-eclipse viewing. NOTE 1 - By reference to ISO 21987 and ISO 14889, this document also applies to lenses mounted in spectacles. NOTE 2 - Optical and geometric requirements are given for uncut finished spectacle lenses in ISO 8980-1 and ISO 8980-2, and for mounted lenses, in ISO 21987.