ČSN EN ISO 8980-3

Podrobné informácie

Označenie: ČSN EN ISO 8980-3

Dátum vydania: 01.01.2023

Stránok: 48

Krajina: Česká technická norma

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Anotácia

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