GB/T 10810.3-2025 Uncut finished spectacle lenses - Part 3: Transmittance test methods
1 Scope
This document describes test methods for the transmittance performance of uncut finished spectacle lenses.
This document is applicable to the testing of transmittance performance of uncut finished spectacle lenses. It may also serve as a reference for the test methods for transmittance of other related ophthalmic products.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 3978 Standard illuminants and geometric conditions
GB/T 20147 CIE standard colorimetric observers (GB/T 20147-2006, CIE 10527:1991, IDT)
GB/T 26397 Ophthalmic optics - Terminology (GB/T 26397-2011, ISO 13666:1998, MOD)
JJF 1106 Calibration specification of transmittance measuring equipment for ophthalmic products
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 26397 and the following apply.
3.1
spectral transmittance
τ(λ)
ratio of the spectral radiant flux transmitted by the lens to the incident spectral radiant flux at any specified wavelength, λ
[Source: GB/T 26397-2011, 3.12.2]
3.2
luminous transmittance
τv
ratio of the luminous flux transmitted by the lens to the incident luminous flux, expressed mathematically as:
(1)
where,
τ(λ)——the spectral transmittance of the lens;
V(λ)——the spectral luminous efficiency function for daylight;
SD65(λ)——the spectral distribution function for CIE standard illuminant D65 as specified in GB/T 3978.
[Source: GB/T 26397-2011, 3.12.4]
3.3
transmittance in the solar ultraviolet spectrum
τSUV
weighted average of spectral transmittance between 280nm and 380nm, weighted by the spectral power distribution function for solar radiation, Es(λ), and the relative spectral damage function for ultraviolet radiation, S(λ), expressed mathematically as:
(2)
where,
τ(λ)——the spectral transmittance of the lens;
Es(λ)——the spectral power distribution function for solar radiation;
S(λ)——the relative spectral damage function for ultraviolet radiation.
3.4
transmittance in the solar ultraviolet A spectrum
τSUVA
weighted average of spectral transmittance between 315nm and 380nm, weighted by the spectral power distribution function for solar radiation, Es(λ), and the relative spectral damage function for ultraviolet radiation, S(λ), expressed mathematically as:
(3)
where,
τ(λ)——the spectral transmittance of the lens;
Es(λ)——the spectral power distribution function for solar radiation;
S(λ)——the relative spectral damage function for ultraviolet radiation.
[Source: GB/T 26397-2011, 3.12.3.2]
3.5
transmittance in the solar ultraviolet B spectrum
τSUVB
weighted average of spectral transmittance between 280nm and 315nm, weighted by the spectral power distribution function for solar radiation, Es(λ), and the relative spectral damage function for ultraviolet radiation, S(λ), expressed mathematically as:
(4)
where,
τ(λ)——the spectral transmittance of the lens;
Es(λ)——the spectral power distribution function for solar radiation;
S(λ)——the relative spectral damage function for ultraviolet radiation.
[Source: GB/T 26397-2011, 3.12.3.3]
3.6
traffic signal transmittance
τSIGN
weighted average of the spectral transmittance between 380nm and 780nm, weighted by τ(λ), ESIGN(λ) and V(λ), expressed mathematically as:
Contents
Foreword II
Introduction V
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Classification
6 Apparatus
6.1 General requirements for measuring apparatus
6.2 Measuring apparatus for photochromic lenses
6.3 Measuring apparatus for polarizing lenses
6.4 Measuring apparatus for resistance to light radiation
7 Samples
7.1 General requirements
7.2 Special requirements for photochromic lenses
8 Test procedures
8.1 General parameters
8.2 Photochromic lenses
8.3 Polarizing lenses
8.4 Resistance to light radiation
9 Data processing
9.1 Luminous transmittance
9.2 Transmittance in the solar ultraviolet (UV) spectrum
9.3 Transmittance in the solar ultraviolet A spectrum
9.4 Transmittance in the solar ultraviolet B spectrum
9.5 Traffic signal transmittance
9.6 Solar blue-light transmittance
9.7 Solar IR transmittance
10 Test report
Annex A (Informative) Comparison of clause/subclause numbers between this document and ISO 8980-3:2022
Annex B (Normative) Spectral characteristics of UV filters for the test of resistance to light radiation
Annex C (Normative) Weighting functions for relative visual attenuation coefficient (incandescent signal lights) calculation
Annex D (Normative) Calculation of UV transmittance and blue-light hazard function
Annex E (Normative) Spectral power distribution function for solar radiation for calculating solar IR transmittance
GB/T 10810.3-2025 Uncut finished spectacle lenses - Part 3: Transmittance test methods
1 Scope
This document describes test methods for the transmittance performance of uncut finished spectacle lenses.
This document is applicable to the testing of transmittance performance of uncut finished spectacle lenses. It may also serve as a reference for the test methods for transmittance of other related ophthalmic products.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 3978 Standard illuminants and geometric conditions
GB/T 20147 CIE standard colorimetric observers (GB/T 20147-2006, CIE 10527:1991, IDT)
GB/T 26397 Ophthalmic optics - Terminology (GB/T 26397-2011, ISO 13666:1998, MOD)
JJF 1106 Calibration specification of transmittance measuring equipment for ophthalmic products
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 26397 and the following apply.
3.1
spectral transmittance
τ(λ)
ratio of the spectral radiant flux transmitted by the lens to the incident spectral radiant flux at any specified wavelength, λ
[Source: GB/T 26397-2011, 3.12.2]
3.2
luminous transmittance
τv
ratio of the luminous flux transmitted by the lens to the incident luminous flux, expressed mathematically as:
(1)
where,
τ(λ)——the spectral transmittance of the lens;
V(λ)——the spectral luminous efficiency function for daylight;
SD65(λ)——the spectral distribution function for CIE standard illuminant D65 as specified in GB/T 3978.
[Source: GB/T 26397-2011, 3.12.4]
3.3
transmittance in the solar ultraviolet spectrum
τSUV
weighted average of spectral transmittance between 280nm and 380nm, weighted by the spectral power distribution function for solar radiation, Es(λ), and the relative spectral damage function for ultraviolet radiation, S(λ), expressed mathematically as:
(2)
where,
τ(λ)——the spectral transmittance of the lens;
Es(λ)——the spectral power distribution function for solar radiation;
S(λ)——the relative spectral damage function for ultraviolet radiation.
3.4
transmittance in the solar ultraviolet A spectrum
τSUVA
weighted average of spectral transmittance between 315nm and 380nm, weighted by the spectral power distribution function for solar radiation, Es(λ), and the relative spectral damage function for ultraviolet radiation, S(λ), expressed mathematically as:
(3)
where,
τ(λ)——the spectral transmittance of the lens;
Es(λ)——the spectral power distribution function for solar radiation;
S(λ)——the relative spectral damage function for ultraviolet radiation.
[Source: GB/T 26397-2011, 3.12.3.2]
3.5
transmittance in the solar ultraviolet B spectrum
τSUVB
weighted average of spectral transmittance between 280nm and 315nm, weighted by the spectral power distribution function for solar radiation, Es(λ), and the relative spectral damage function for ultraviolet radiation, S(λ), expressed mathematically as:
(4)
where,
τ(λ)——the spectral transmittance of the lens;
Es(λ)——the spectral power distribution function for solar radiation;
S(λ)——the relative spectral damage function for ultraviolet radiation.
[Source: GB/T 26397-2011, 3.12.3.3]
3.6
traffic signal transmittance
τSIGN
weighted average of the spectral transmittance between 380nm and 780nm, weighted by τ(λ), ESIGN(λ) and V(λ), expressed mathematically as:
Contents of GB/T 10810.3-2025
Contents
Foreword II
Introduction V
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Classification
6 Apparatus
6.1 General requirements for measuring apparatus
6.2 Measuring apparatus for photochromic lenses
6.3 Measuring apparatus for polarizing lenses
6.4 Measuring apparatus for resistance to light radiation
7 Samples
7.1 General requirements
7.2 Special requirements for photochromic lenses
8 Test procedures
8.1 General parameters
8.2 Photochromic lenses
8.3 Polarizing lenses
8.4 Resistance to light radiation
9 Data processing
9.1 Luminous transmittance
9.2 Transmittance in the solar ultraviolet (UV) spectrum
9.3 Transmittance in the solar ultraviolet A spectrum
9.4 Transmittance in the solar ultraviolet B spectrum
9.5 Traffic signal transmittance
9.6 Solar blue-light transmittance
9.7 Solar IR transmittance
10 Test report
Annex A (Informative) Comparison of clause/subclause numbers between this document and ISO 8980-3:2022
Annex B (Normative) Spectral characteristics of UV filters for the test of resistance to light radiation
Annex C (Normative) Weighting functions for relative visual attenuation coefficient (incandescent signal lights) calculation
Annex D (Normative) Calculation of UV transmittance and blue-light hazard function
Annex E (Normative) Spectral power distribution function for solar radiation for calculating solar IR transmittance
