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GB/T 39771.2-2021 English PDF

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US$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 39771.2-2021: Optical radiation safety of LEDs - Part 2: Measurement methods
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39771.2-2021	259	Add to Cart	3 days	Optical radiation safety of LEDs - Part 2: Measurement methods	Valid

Similar standards

GB/T 43978 GB/T 43979 GB/T 43770 GB/T 18910.103 GB/T 18910.64 GB/T 39771.1

Basic data

Standard ID: GB/T 39771.2-2021 (GB/T39771.2-2021)
Description (Translated English): Optical radiation safety of LEDs - Part 2: Measurement methods
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L53
Word Count Estimation: 14,148
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 39771.2-2021: Optical radiation safety of LEDs - Part 2: Measurement methods

---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.
Optical radiation safety of LEDs - Part 2.Measurement methods ICS 31.260 L53 National Standards of People's Republic of China Semiconductor light-emitting diode light radiation safety Part 2.Test Method Released on 2021-03-09 2021-10-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 General requirements 1 4.1 Environmental conditions 1 4.2 Power supply 2 4.3 Warm-up time 2 4.4 Test site 2 4.5 Test equipment 2 4.6 Safety warning 2 5 Test requirements 2 5.1 Action spectrum function 2 5.2 Test field of view 3 5.3 Incident (receiving) aperture 3 5.4 Test distance 4 5.5 Maximum radiation 4 6 Test method 4 6.1 Irradiance 4 6.2 Radiance 6 6.3 Safety distance 7 6.4 Test report 7 Appendix A (Normative Appendix) Test Equipment 8

Foreword

GB/T 39771 "Semiconductor Light Emitting Diode Optical Radiation Safety" is divided into two parts. ---Part 1.Requirements and classification methods; ---Part 2.Test method. This part is Part 2 of GB/T 39771. This section was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This part is proposed and managed by the Ministry of Industry and Information Technology of the People's Republic of China. Drafting organizations of this section. Hangzhou Zhejiang University Sanse Instrument Co., Ltd., Hangzhou Product Quality Supervision and Inspection Institute, China Electronic Technology Standards Chemical Research Institute, Zhejiang Sanse Optoelectronics Technology Co., Ltd., Guangzhou Saixi Standard Testing and Research Institute Co., Ltd., National Lighting Quality Supervision and Inspection Heart (Zhongshan). The main drafters of this section. Qiao Bo, Wang Jianping, Qian Feng, Zhao Ying, Liu Xiujuan, Zhou Gang, Peng Zhenjian, Mou Tongsheng, Xu Ziyu, Li Junkai. Semiconductor light-emitting diode light radiation safety Part 2.Test Method

1 Scope

This part of GB/T 39771 specifies the general requirements and tests for the light radiation safety of semiconductor light-emitting diodes (hereinafter referred to as LED) Requirements and test methods. This section applies to single-chip or multi-chip LEDs with light radiation wavelengths in the near-ultraviolet and visible regions (300nm~780nm).

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 20145-2006 Photobiological safety of lamps and lamp systems GB/T 30117.2-2013 Photobiological safety of lamps and lamp systems Part 2.Non-laser optical radiation safety related manufacturing requirements guide GB/T 39771.1-2021 Semiconductor Light Emitting Diode Optical Radiation Safety Part 1.Requirements and Classification Method SJ/T 11394-2009 Semiconductor light-emitting diode test method SJ/T 11395-2009 Semiconductor Lighting Terminology

3 Terms and definitions

GB/T 20145-2006, GB/T 30117.2-2013, GB/T 39771.1-2021, SJ/T 11394-2009 and SJ/T 11395- The terms and definitions defined in.2009 and the following apply to this document. 3.1 Input aperture The effective incident aperture size of the receiver for receiving LED light radiation. Note. Also known as the receiving aperture, the unit is millimeter (mm). 3.2 Measurementdistance The distance from the viewing source of the LED meter to the incident aperture of the test equipment. Note. The unit is millimeter (mm).

4 General requirements

4.1 Environmental conditions The LED test conditions should be carried out under the conditions specified in the relevant product documents. If there are no specified conditions, then the test conditions should follow The following requirements. a) Temperature. 25℃±3℃; b) Relative humidity. no more than 65%. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 39771.2-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 39771.2-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 39771.2-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 39771.2-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.