Standard
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AS/NZS ISO 8980.3:2015
[Current]Ophthalmic optics — Uncut finished spectacle lenses, Part 3: Transmittance specifications and test methods
Adopts ISO 8980-3:2013 to specify the requirements for the transmittance properties of uncut finished spectacle lenses.
Published: 12/02/2015
Pages: 31
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
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 road use and driving
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 recognition/detection of incandescent signal lights
6.4 Additional transmittance requirements for special types of spectacle lenses
6.4.1 Photochromic spectacle lenses
6.4.1.1 General
6.4.1.2 Photochromic response
6.4.1.3 Photochromic response at various temperatures
6.4.1.4 Photochromic response at moderate light levels
6.4.2 Polarizing spectacle lenses
6.4.2.1 Individual uncut polarizing lenses
6.4.2.2 Mounted pairs of polarizing lenses
6.4.3 Gradient-tinted spectacle lenses
6.5 Resistance to radiation
7 Test methods
7.1 General
7.2 Spectral transmittance
7.3 Luminous transmittance and relative visual attenuation coefficient (quotient)
7.3.1
7.3.2
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 specimens
7.5.2 Apparatus
7.5.2.1 Irradiation source, used to darken photochromic spectacle lens.
7.5.2.2
7.5.2.3
7.5.3 Determination of transmittance
7.5.3.1 Conditioning
7.5.3.2 Luminous and UV transmittance in the faded state
7.5.3.3 Luminous and UV transmittance in the darkened state
7.5.3.4 Luminous transmittance at moderate light levels
7.5.3.5 Luminous and UV transmittance for driving in twilight or at night
7.5.3.6 Luminous and UV transmittance at various temperatures
7.6 Test methods for polarizing spectacle lenses
7.6.1 Mean luminous transmittance
7.6.2 Polarizing efficiency
7.6.2.1 Principle
7.6.2.2 Spectrophotometer method
7.6.2.3 Broadband method
7.6.3 Plane of transmission
7.6.3.1 General
7.6.3.2 Apparatus
7.6.3.3 Procedure for an uncut lens
7.6.3.4 Procedure for mounted lenses
7.7 Determination of resistance to radiation
7.7.1 Principle
7.7.2 Reference apparatus
7.7.3 Procedure using reference apparatus
8 Identification
Annex A
Annex B
Annex C
Annex D
Annex E
E.1 Blue-light hazard
E.2 Infrared risk
E.3 Ultraviolet risk
Annex F
Bibliography
Cited references in this standard
[Current]
Ophthalmic optics — Spectacle lenses — Fundamental requirements for uncut finished lenses
Content history
[Superseded]
[Superseded]
DR AS/NZS ISO 8980.3:2014
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