Ophthalmic optics. Uncut finished spectacle lenses - Transmittance specifications and test methods
Ophthalmic optics. Uncut finished spectacle lenses - Transmittance specifications and test methods
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Ophthalmic optics. Uncut finished spectacle lenses - Transmittance specifications and test methods

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1   Scope

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.