GB/T 36979-2018 English PDF

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GB/T 36979-2018: Measuring method of spatial distribution of color characteristics for LED products
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 36979-2018	439	Add to Cart	4 days	Measuring method of spatial distribution of color characteristics for LED products	Valid

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Basic data

Standard ID: GB/T 36979-2018 (GB/T36979-2018)
Description (Translated English): Measuring method of spatial distribution of color characteristics for LED products
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N35
Classification of International Standard: 29.140.40
Word Count Estimation: 22,219
Date of Issue: 2018-12-28
Date of Implementation: 2019-07-01
Regulation (derived from): National Standard Announcement No. 17 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 36979-2018: Measuring method of spatial distribution of color characteristics for LED products

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Measuring method of spatial distribution of color characteristics for LED products ICS 29.140.40 N35 National Standards of People's Republic of China LED product space color distribution measurement method Published on.2018-12-28 2019-07-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 color representation 2 4.1 Chroma parameter 2 4.2 Spatial chromaticity distribution 3 4.3 Spatial average chromaticity parameter 3 4.4 Spatial color non-uniformity 3 4.5 Standard Light Color and Color Tolerance Range 3 5 Measurement conditions 4 5.1 Laboratory Requirements 4 5.2 Ambient temperature 4 5.3 Surface temperature (tp point temperature) 5 5.4 Air flow 5 5.5 Measuring voltage and measuring current 5 5.6 Working attitude of the tested LED products 6 5.7 Stability before measurement 6 6 color measuring equipment 6 6.1 Integrating sphere-spectral radiometer (spectral radiometer as detector) 6 6.2 Distributed Spectroradiometer (Spectrometer as a Detector) 6 6.3 Requirements for the integrating sphere 7 6.4 Rotating table requirements for distributed spectroradiometers 7 6.5 Spectroradiometer Requirements 7 7 Chromaticity measurement of the specified direction 8 8 Average Chroma Parameter Measurement 8 8.1 Integrating sphere-spectral radiometer method 8 8.2 Distribution Spectroradiometer Method 9 9 Space color unevenness measurement 10 10 Calibration and traceability 11 10.1 Calibration of the integrating sphere-spectral radiometer 11 10.2 Calibration of distributed spectroradiometers 11 Appendix A (informative) Spectral radiation intensity measurement distance determination 12 Appendix B (informative) Angle scan mode 13 Appendix C (informative) Determination of sampling interval 14 Reference 19

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Light Industry Association. This standard is under the jurisdiction of the National Lighting Appliance Standardization Technical Committee (SAC/TC224). This standard was drafted. Shanghai Times Light Lighting Appliance Testing Co., Ltd., Hangzhou Yuanfang Optoelectronic Information Co., Ltd., Guangdong Province Dongguan Quality Supervision and Inspection Center, Hangzhou Yuanfang Testing and Calibration Technology Co., Ltd., Guangdong Lighting Association, Zhongguancun Semiconductor Lighting Project Research and Development and Industry Alliance, Hangzhou Maple Yongming Optoelectronics Co., Ltd., Guangzhou Institute of Metrology and Testing Technology. The main drafters of this standard. Pan Jiangen, Wang Wei, Shi Xiaohong, Li Benliang, Li Qian, Chen Cong, Li Zili, Qi Jun, Huang Jianming, Wang Liwen. LED product space color distribution measurement method

1 Scope

This standard specifies white LED lights, white LED modules and white LED lamps (hereinafter collectively referred to as "LED products") for lighting. The color parameter representation and the method of measuring the average color and spatial color distribution. This standard applies to white LED products for lighting. This standard does not include LED packages and OLED (Organic Light Emitting Diode) products. However, the above products can refer to this standard when encountering similar problems.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 2900.65-2004 Electrotechnical terminology lighting GB/T 9468-2008 General requirements for luminometric measurement of luminaires GB/T 24826-2016 General lighting LED products and related equipment terms and definitions ISO 11664-1.2007/CIES014-1.2007 Chroma Part 1. CIE Standard Color Observer (Colorimetry- Part 1. CIEstandardcolorimetricobservers) ISO 11664-2.2007/CIES014-2.2006 Chroma Part 2. CIE Standard Illumination (Colorimetry-Part 2. CIEstandardiluminants) ISO 11664-3.2012/CIES014-3.2011 Chroma Part 3. CIE tristimulus values (Colorimetry-Part 3. CIE Tristimulusvalues) CIE 13.3-1995 Method for measuring and characterizing the chromogenic properties of light sources (Methodofmeasuring andspecifyingcolour Renderingpropertiesoflightsources) CIE15-2004 Colorimetry

3 Terms and definitions

GB/T 2900.65-2004, GB/T 9468-2008, GB/T 24826-2016, ISO 11664-1.2007/CIES014-1. 2007, ISO 11664-2.2007/CIES014-2.2006, ISO 11664-3.2012/CIES014-3.2011, CIE 13.3-1995, The following terms and definitions defined by CIE15-2004 apply to this document. 3.1 Total spectral radiant flux totalspectralradiantflux The spectral intensity of the total radiant flux Φe of the LED product in the full geometric space (4π solid angle) [see equation (1)]. Φe, λ(λ)= dΦe Dλ (1) Note. The unit is watts per nanometer (W·nm-1). 3.2 Spectral irradiance The spectral radiant flux on the bin containing the point projected onto the face is divided by the bin area dA [see equation (2)]. ......

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