GB/T 38248-2019 English PDF

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GB/T 38248-2019: Evaluation methods of optical radiation safety for household laser display systems
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 38248-2019	439	Add to Cart	5 days	Evaluation methods of optical radiation safety for household laser display systems	Valid

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GB/T 7247.1   GB/T 39118   GB/T 18490.1   GB/T 38246   GB/T 38245   

Basic data

Standard ID: GB/T 38248-2019 (GB/T38248-2019)
Description (Translated English): Evaluation methods of optical radiation safety for household laser display systems
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L51
Classification of International Standard: 31.120; 31.260
Word Count Estimation: 22,281
Date of Issue: 2019-10-18
Date of Implementation: 2020-05-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 38248-2019: Evaluation methods of optical radiation safety for household laser display systems

---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.
Evaluation methods of optical radiation safety for household laser display systems ICS 31.120; 31.260 L51 National Standards of People's Republic of China Household laser display system optical radiation safety characteristics Evaluation method Published on.2019-10-17 2020-05-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Measurement conditions 1 4.1 General Description 1 4.2 Product requirements 2 4.3 Measurement System Requirements 2 5 Measurement method 4 5.1 General requirements 4 5.2 Laser radiation measurement 4 5.3 Incoherent optical radiation measurement 6 6 reviews9 6.1 Laser radiation 9 6.2 Incoherent optical radiation 9 6.3 Laser mixed light radiation 9 6.4 Laser or laser hybrid optical radiation that meets the applicable conditions of 4.4 of IEC 60825-1.2014 10 Appendix A (Normative Appendix) Reflective Ultra Short Focus Laser Display System 11 Appendix B (informative appendix) Relationship between radiance and irradiance, irradiation quantity 12 Appendix C (informative) Example of optical radiation safety measurement and evaluation of laser hybrid light source system 13 C.1 Overview 13 C.2 System laser radiation safety measurement and evaluation 13 C.3 Systematic measurement and evaluation of incoherent optical radiation 15 C.4 System Optical Radiation Safety Assessment 17 Appendix D (informative) Test report 18 Reference 19 Figure 1 Schematic diagram of the projected light measurement system 3 Figure 2 Schematic diagram of screen reflection light measurement system 3 Figure 3 Flow chart of continuous laser radiation measurement 5 Figure 4 Pulse laser radiation measurement flow chart 6 Figure 5 Flow chart of incoherent optical radiation classification measurement 8 Figure A.1 Schematic diagram of a convex reflective ultra-short-focus laser display system 11 Figure A.2 Schematic diagram of a concave reflective ultra-short-focus laser display system 11

Foreword

This standard 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 organization of this document is not responsible for identifying these patents. This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Standardization of Optical Radiation Safety and Laser Equipment (SAC/TC284). This standard was drafted. Southeast University, Zhejiang Sanse Optoelectronic Technology Co., Ltd., China Electronics Technology Standardization Institute, Beijing Tairuite Testing Technology Service Co., Ltd., Wuhan Huagong Laser Engineering Co., Ltd., Zhejiang Smart Health Lighting Technology Co., Ltd., China The eleventh institute of Electronic Technology Group Corporation. The main drafters of this standard. Li Xiaohua, Wang Feixia, Qiao Bo, Zhao Ying, Liu Zhigang, Wang Tianzhi, Lu Feixing, Gao Hongwei, Yu Xi, Xu Ziyu, Zhou Xiaozhuang, Yan Yan.

Introduction

This standard is in accordance with GB 7247.1-2012 (IEC 60825-1.2007, IDT) and GB/T 20145-2006 (CIES009/E. 2002, IDT) Determination of the principles of optical radiation safety classification of laser and incoherent light, GB/T 38246-2019, cited The latest technical content in IEC 60825-1.2014 and GB/T 30117.5-2019. GB/T 7247 "Safety of Laser Products" (all parts) is developed using IEC 60825 "Safety of Laser Products" (all parts). Among them, GB 7247.1-2012 (IEC 60825-1.2007, IDT) is the basic standard of this series of standards, which stipulates the general purpose of laser products. Light security level classification requirements. The other parts specify specific laser safety requirements based on different products and applications. GB/T 20145-2006 (CIES009/E.2002, IDT) specifies the classification and general requirements for incoherent optical radiation safety levels. CIES009/E.2002 is prepared by CIE and processed by IEC /TC76 to form IEC 62471. International Electrotechnical Commission to IEC 62471 As a basic standard, it has developed into a series of non-coherent optical radiation safety standards for different incoherent light source products and applications. The fifth of them Partial conversion to GB/T 30117.5-2019 (IEC 62471-5.2015, IDT), specifies the optical radiation safety of incoherent light projectors Claim. Household laser display system optical radiation safety characteristics Evaluation method

1 Scope

This standard specifies the methods for measuring and evaluating the optical radiation safety characteristics of household laser display systems (hereinafter referred to as systems), including measurement conditions, Measuring equipment, measuring procedures, data processing, evaluation, etc. This standard is applicable to lasers, incoherent lights and spectral ranges from 380 nm to 780 nm for household ultra-short-focus laser display systems. Measurement and evaluation of optical radiation safety characteristics of laser and incoherent hybrid light sources. Measurement and evaluation of optical radiation safety characteristics of fluorescent light sources can be used Execute according to this standard. This standard does not apply to the measurement and evaluation of optical radiation safety characteristics of laser scanning display systems.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB 7247.1-2012 Safety of laser products - Part 1. Equipment classification, requirements GB/T 20145-2006 Photobiosafety of lamps and lamp systems GB/T 30117.5-2019 Photobiosafety of lamps and lamps - Part 5. Projector GB/T 38246-2019 Domestic laser display system optical radiation safety characteristics evaluation requirements IEC 60825-1.2014 Safety of laser products - Part 1. Equipment classification, requirements (Safetyoflaserproduct-Part 1. Equipmentclassificationandrequirements)

3 Terms and definitions

GB 7247.1-2012, GB/T 20145-2006, GB/T 30117.5-2019, GB/T 38246-2019 and IEC 60825- 1. The following terms and definitions defined in.2014 apply to this document. 3.1 Up to launch accessibleemission Use aperture stop (AEL in W or J) or limit aperture (AEL) at a certain location according to the specified measurement method The amount of light radiation determined by W·m-2 or J·m-2. 3.2 Reachable emission limit accessibleemissionlimit AEL The maximum possible transmission allowed within the specified category.

4 Measurement conditions

4.1 General instructions 4.1.1 Environmental conditions System measurements should be made under the conditions specified by the product. If there are no specified conditions, the measurement conditions should meet the following environmental conditions. ......

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