ISO 8980-3:2022
Ophthalmic optics — Uncut finished spectacle lenses — Part 3: Transmittance specifications and test methods
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.
| Get this standard | Prices exclude GST | |
|---|---|---|
| PDF ( Single user document) |
$281.74 NZD
|
|
| HardCopy |
$319.13 NZD
|
|
| Networkable PDF |
Price varies
|
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Classification
6 Requirements
6.1 General
6.2 General transmittance requirements
6.2.1 Tint descriptions, categories, and UV transmittance requirements
6.2.2 Tolerances on luminous transmittance of tinted lenses
6.3 Spectral transmittance requirements of spectacle lenses intended for driving and road use
6.3.1 General
6.3.2 Spectral transmittance
6.3.3 Daylight use
6.3.4 Driving in twilight or at night
6.3.5 Relative visual attenuation coefficient (quotient) for incandescent traffic signal light detection
6.4 Additional transmittance requirements for special types of spectacle lenses
6.4.1 Photochromic spectacle lenses
6.4.2 Polarizing spectacle lenses
6.4.3 Gradient-tinted spectacle lenses
6.5 Resistance to ultraviolet radiation
6.6 Claimed UV absorption/transmittance properties
6.6.1 General
6.6.2 Solar UV absorption
6.6.3 Solar UV transmittance
7 Test methods
7.1 General
7.2 Spectral transmittance
7.3 Luminous transmittance and relative visual attenuation coefficient (quotient)
7.4 Ultraviolet transmittance
7.4.1 Principle
7.4.2 Apparatus
7.4.3 Calculation
7.5 Transmittance properties of photochromic spectacle lenses and photochromic specimens
7.5.1 Test lenses
7.5.2 Apparatus
7.5.3 Determination of transmittance
7.6 Test methods for polarizing spectacle lenses
7.6.1 Mean luminous transmittance
7.6.2 Polarizing efficiency
7.6.3 Plane of transmission
7.7 Determination of resistance to ultraviolet radiation
7.7.1 Principle
7.7.2 Reference apparatus
7.7.3 Procedure using reference apparatus
8 Identification
Annex A (normative) Spectral data for calculating relative visual attenuation quotients for incandescent signal lights
Annex B (normative) Calculation of solar UV and blue-light transmittance values
Annex C (normative) Cut-on filter for UV filtering
Annex D (informative) Spectral radiation risks
Annex E (informative) Transmittance equations in summation form
Annex F (informative) Example of the calculation of luminous transmittance, τV
Bibliography
Previous versions
Keep me up-to-date
Register to receive notifications when updates are made to this standard.
Related Information
Similar Standards
-
AS/NZS 14889:2015
Ophthalmic optics - Spectacle lenses - Fundamental requirements for uncut finished lenses -
AS/NZS 14889:2015 A1
Ophthalmic optics - Spectacle lenses - Fundamental requirements for uncut finished lenses -
AS/NZS 21987:2019
Ophthalmic optics – Mounted spectacle lenses -
AS/NZS 8980.1:2019
Ophthalmic optics - Uncut finished spectacle lenses - Part 1: Specifications for single-vision and multifocal lenses
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Classification
6 Requirements
6.1 General
6.2 General transmittance requirements
6.2.1 Tint descriptions, categories, and UV transmittance requirements
6.2.2 Tolerances on luminous transmittance of tinted lenses
6.3 Spectral transmittance requirements of spectacle lenses intended for driving and road use
6.3.1 General
6.3.2 Spectral transmittance
6.3.3 Daylight use
6.3.4 Driving in twilight or at night
6.3.5 Relative visual attenuation coefficient (quotient) for incandescent traffic signal light detection
6.4 Additional transmittance requirements for special types of spectacle lenses
6.4.1 Photochromic spectacle lenses
6.4.2 Polarizing spectacle lenses
6.4.3 Gradient-tinted spectacle lenses
6.5 Resistance to ultraviolet radiation
6.6 Claimed UV absorption/transmittance properties
6.6.1 General
6.6.2 Solar UV absorption
6.6.3 Solar UV transmittance
7 Test methods
7.1 General
7.2 Spectral transmittance
7.3 Luminous transmittance and relative visual attenuation coefficient (quotient)
7.4 Ultraviolet transmittance
7.4.1 Principle
7.4.2 Apparatus
7.4.3 Calculation
7.5 Transmittance properties of photochromic spectacle lenses and photochromic specimens
7.5.1 Test lenses
7.5.2 Apparatus
7.5.3 Determination of transmittance
7.6 Test methods for polarizing spectacle lenses
7.6.1 Mean luminous transmittance
7.6.2 Polarizing efficiency
7.6.3 Plane of transmission
7.7 Determination of resistance to ultraviolet radiation
7.7.1 Principle
7.7.2 Reference apparatus
7.7.3 Procedure using reference apparatus
8 Identification
Annex A (normative) Spectral data for calculating relative visual attenuation quotients for incandescent signal lights
Annex B (normative) Calculation of solar UV and blue-light transmittance values
Annex C (normative) Cut-on filter for UV filtering
Annex D (informative) Spectral radiation risks
Annex E (informative) Transmittance equations in summation form
Annex F (informative) Example of the calculation of luminous transmittance, τV
Bibliography