GB/T 36142-2018Test methods of color and color difference for architectural glass (English PDF)
建筑玻璃颜色及色差的测量方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 14, 2018
Implementation date
April 1, 2019
Scope
GB/T 36142-2018 is the English-translated version of 建筑玻璃颜色及色差的测量方法.
GB/T 36142-2018 sets the methods for measuring the transmitted and reflected colour of architectural glass and the colour difference between panes or between positions on the same pane.
It covers the measurement principle, samples, spectral transmittance and reflectance measurements, colour calculation, glass colour measurement, colour difference calculation and the test report.
Defined terms include transmission colour, vertical reflection colour at an incidence angle of not more than 10°, off-angle reflection colour at larger angles such as 30°, 45° and 60°, and glass colour difference, split into transmission and reflection colour difference.
It applies to single and multi-layer composite architectural glass with specular reflection, but not to glass products with diffuse properties. It is used by glass manufacturers and testing laboratories, was issued on 14 May 2018 and has applied since 1 April 2019.
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Document preview — GB/T 36142-2018
National Standard of the People's Republic of China
- ICS
- 81.040
- Classification
- Q 30
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the measurement methods for the transmission and reflection color and chromatic aberration of architectural glass, including terms and definitions, measurement principles, samples, and spectra. Transmittance measurements, spectral reflectance measurements, color calculations, glass color measurements, color difference calculations, and test reports.
This standard applies to the measurement of the transmission and reflection color and chromatic aberration of single or multi-layer composite architectural glass with specular reflection characteristics.
This standard does not apply to the measurement of the transmission and reflection color and chromatic aberration of glass products with diffuse properties.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 3979-2008 Method for measuring object color
GB/T 5698 color terminology
3 Terms and definitions
The following terms and definitions as defined in GB/T 5698 apply to this document.
3.1 Transmission color
The color of the light after passing through the glass under the condition that the light incident angle is not more than 10°.
3.2 Reflection color
The color of light reflected through the glass.
3.3 Vertical reflection color
When the light incident angle is not more than 10°, the specular surface is reflected at the same receiving angle as the incident angle after the light is reflected by each surface of the glass. Shoot the color.
3.4 Off-angle reflection color
The specular reflection color of the glass at a light incident angle greater than 10°. Usually 30° off-angle reflection color, 45° off-angle reflection color and 60° Deflection reflection color.
3.5 Glass color difference
The difference in color between the glass or the target color, also refers to the color difference between different positions of the same piece of glass, divided into transmission chromatic aberration and anti- The color difference is expressed by deltaEab*.
3.6 Off-angle color difference
The color difference of the eccentric reflection color under the same measurement angle condition.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB/T 3979-2008 — Methods for the measurement of object color
GB/T 5698-2001 — Glossary of color terms
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