GB/T 10810.3-2025 PDF English
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| GB/T 10810.3-2025 | English | 575 |
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Uncut finished spectacle lenses - Part 3: Transmittance test methods
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| GB 10810.3-2006 | English | 85 |
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Spectacle lenses and related eye wear -- Part 3: Transmittance specifications and test methods
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GB/T 10810.3-2025: Uncut finished spectacle lenses - Part 3: Transmittance test methods---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT10810.3-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 11.040.70
CCS Y 89
Replacing GB 10810.3-2006
Uncut finished spectacle lenses - Part 3.Transmittance test
methods
(ISO 8980-3.2022, Ophthalmic optics -- Uncut finished spectacle lenses -- Part 3.
Transmittance specifications and test methods, MOD)
Issued on: FEBRUARY 28, 2025
Implemented on: MARCH 01, 2026
Issued by. State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
Introduction... 6
1 Scope... 7
2 Normative references... 7
3 Terms and definitions... 7
4 Symbols... 12
5 Classification... 12
6 Instruments and equipment... 13
6.1 General requirements for measuring devices... 13
6.2 Measuring device for photochromic lenses... 13
6.3 Polarization lens measuring device... 14
6.4 Light-resistant irradiation measurement device... 16
7 Samples... 17
7.1 General requirements... 17
7.2 Special requirements for photochromic lenses... 17
8 Test steps... 17
8.1 General Parameters... 17
8.2 Photochromic lenses... 18
8.3 Polarized lenses... 19
8.4 Light irradiation resistance performance... 20
9 Data processing... 20
9.1 Luminous transmittance... 20
9.2 Solar ultraviolet (UV) transmittance... 21
9.3 Transmittance in the solar ultraviolet A spectrum... 21
9.4 Transmittance in the solar ultraviolet B spectrum... 21
9.5 Traffic signal transmittance ratio... 22
9.6 Solar blue-luminous transmittance... 22
9.7 Solar IR transmittance... 22
10 Test report... 23
Annex A (informative) Comparison on structural numbering between this document
and ISO 8980-3.2022... 24
Annex B (normative) Spectral characteristics of ultraviolet filters used for testing their
resistance to light irradiation performance... 25
Annex C (normative) Weight function for calculating relative visual attenuation factor
(incandescent signal lamp)... 29
Annex D (normative) Calculation of UV transmittance and blue light damage
coefficient... 35
Annex E (normative) The power distribution function of solar IR transmittance used to
calculate the infrared transmittance of the sun... 37
Foreword
This document was drafted in accordance with the rules given in GB/T 1.1-2020
"Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents".
This document is Part 3 of GB/T 10810 "Uncut finished spectacle lenses". GB/T 10810
has already released the following parts.
- Part 1.Single-vision and multifocal;
- Part 2.Power-variation;
- Part 3.Transmittance test methods;
- Part 4.Anti-reflective coatings test methods;
- Part 5.Abrasion-resistant of surfaces test methods.
This document replaces GB 10810.3-2006 "Spectacle lenses and related eye wear --
Part 3.Transmittance specifications and test methods". Compared with GB 10810.3-
2006, in addition to structural adjustments and editorial changes, the main technical
changes are as follows.
a) Added the definitions for solar blue-luminous transmittance and solar IR
transmittance (see 3.9, 3.10 of this Edition);
b) Deleted the definitions for colorless lenses, photochromic lenses, and assembled
lenses (see 3.9~3.17 of Edition 2006);
c) Deleted the required contents (see Chapter 5 of Edition 2006);
d) Added measuring devices and methods for light irradiation resistance
performance (see 6.4, 8.4 of this Edition);
e) Added measurement methods for solar blue-luminous transmittance and solar IR
transmittance (see 8.1 of this Edition);
f) Deleted the inspection rules (see Chapter 7 of Edition 2006);
g) Added spectral characteristics of ultraviolet filters for testing their resistance to
light irradiation (see Annex B of this Edition);
h) Added weight data for calculating the solar blue-luminous transmittance and solar
IR transmittance (see Annex D and Annex E of this Edition).
The modification of this document adopts ISO 8980-3.2022 "Ophthalmic optics --
Uncut finished spectacle lenses -- Part 3.Transmittance specifications and test
methods".
Compared with ISO 8980-3.2022, this document has more structural adjustments. See
Annex A for a list of comparisons of structural numbers between two documents.
The technical differences between this document and ISO 8980-3.2022 and their
reasons are as follows.
a) Deleted the normative references ISO 14889, ISO 11664-1, and ISO 11664-2 (see
Chapter 1, 6.1, 7.3.1, 7.6.2.3, Table A.1, Table A.2 of ISO 8980-3.2022) to adapt
to the Chinese standard system;
b) Replaced ISO 13666 with the normative reference GB/T 26397.Changed the
terms and definitions (see Chapter 3) to adapt to China's technical conditions and
increased operability;
c) Replaced ISO 11664-1 with the normative reference GB/T 3978 (see 3.2, 3.6,
6.3.2) to adapt to China's technical conditions and increased operability;
d) Replaced ISO 11664-2 with the normative reference GB/T 20147 (see 6.3.2) to
adapt to China's technical conditions and increase operability;
e) Deleted the content of the technical requirements (see Chapter 6 of ISO 8980-
3.2022) to adapt to the Chinese standard system. Its content is stipulated in
relevant product standards;
f) Changed the general requirements for measuring devices. Added the normative
reference JJF 1106 (see 6.1; 7.1, 7.2 of ISO 8980-3.2022) to adapt to China's
technical conditions and increase operability;
g) Added the measurement method of solar blue-luminous transmittance and solar
IR transmittance (see 9.6, 9.7) to adapt to China's technical conditions and
increased operability;
h) Deleted the content of the logo (see Chapter 8 of ISO 8980-3.2022) to adapt to
the Chinese standard system. Its content is stipulated in relevant product standards;
i) Added test reports (see Chapter 10) to adapt to China's technical conditions and
increased operability;
j) Added solar radiation spectral power distribution function for calculating solar IR
transmittance (see Annex E) to adapt to the technical conditions in China and
increased operability.
This document has made the following editing changes.
- To coordinate with Chinese existing standards, the standard name was changed to
"Uncut finished spectacle lenses -- Part 3.Transmittance test methods";
Uncut finished spectacle lenses -- Part 3.Transmittance test
methods
1 Scope
This document describes the test method for the transmission ratio performance of
glasses lenses.
This document applies to testing the transmission ratio performance of glasses lenses.
Other relevant glasses product transmission ratio test methods are performed in
accordance with this document.
2 Normative references
The following referenced documents are indispensable for the application 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 defined in GB/T 26397 as
well as the followings apply.
3.1 spectral transmittance
τ (λ)
At any specified wavelength (λ), the ratio of the spectral radiation flux through the lens
to the incident spectral radiation flux.
(6). The measurement methods for luminous transmittance τV and traffic signal
transmittance τ SIGN are described in sections 8.1.1 and 8.1.2.
8.1.4 Transmittance in the solar ultraviolet A spectrum τSUVA
To measure the transmittance in the solar ultraviolet A spectrum τSUVA, the spectral
power distribution function of solar radiation and the relative spectral damage function
of ultraviolet radiation should be used for calculation. The spectral bandwidth should
not exceed 5 nm. The wavelength sampling interval for spectral transmittance should
not exceed 5 nm. Calculate according to formula (12).
8.1.5 Transmittance in the solar ultraviolet B spectrum τSUVB
To measure the transmittance in the solar ultraviolet B spectrum τSUVB, the spectral
power distribution function of solar radiation and the relative spectral damage function
of ultraviolet radiation should be used for calculation. The spectral bandwidth is not
greater than 5 nm. The wavelength sampling interval for spectral transmittance should
not exceed 5 nm. Calculate according to formula (13).
8.1.6 Transmittance in the solar ultraviolet spectrum τSUV
To measure the transmittance in the solar ultraviolet spectrum τSUV, the spectral power
distribution function of solar radiation and the relative spectral damage function of
ultraviolet radiation should be used for calculation. The spectral bandwidth should not
exceed 5 nm. The wavelength sampling interval for spectral transmittance should not
exceed 5 nm. Calculate according to formula (11).
8.1.7 Solar blue-luminous transmittance τsb
To measure the solar blue-luminous transmittance τsb, the solar spectral power
distribution function and blue light damage function should be used for calculation. The
spectral bandwidth should not exceed 5 nm. The wavelength sampling interval for
spectral transmittance should not exceed 5 nm. Calculate according to formula (15).
8.1.8 Solar IR transmittance τSIR
To measure the solar IR transmittance τSIR, the solar spectral power distribution function
should be used for calculation. The wavelength sampling interval for spectral
transmittance should not exceed 10 nm. Calculate according to formula (16).
8.2 Photochromic lenses
8.2.1 Preprocessing
After cleaning the lenses, follow the procedures specified in the technical instructions
provided by the manufacturer to keep the lenses in a faded state.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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