GB/T 40965-2021 English PDFUS$789.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 40965-2021: Measurement of retroreflection Status: Valid
Basic dataStandard ID: GB/T 40965-2021 (GB/T40965-2021)Description (Translated English): Measurement of retroreflection Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K70 Word Count Estimation: 43,458 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 40965-2021: Measurement of retroreflection---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.Measurement of retroreflection ICS 43.040.20 CCSK70 National Standards of People's Republic of China Retroreflective measurement method Released on 2021-11-26 2022-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee Table of contentsForeword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Geometry system 8 5 Laboratory photometric measurement methods and measurement uncertainty 12 6 Measuring geometry 19 7 Retro reflector color 24 8 On-site measurement 26 Appendix A (informative) Conversion formulas between systems 29 Appendix B (informative) Aperture 31 Appendix C (informative) An example of converting the lighting/observation conditions in a road into a retroreflective measurement system 34 Reference 39ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China National Light Industry Council. This document is under the jurisdiction of the National Lighting Standardization Technical Committee (SAC/TC224). Drafting organizations of this document. Hangzhou Yuanfang Optoelectronics Information Co., Ltd., Beijing Normal University, Chinese Academy of Metrology, Transportation Ministry of Highway Research, Xiamen Lidaxin Lighting Co., Ltd., Zhenjiang Customs Comprehensive Technology Center, Suzhou Metrology and Testing Institute, Jinhua Metrology Quality Science Research Institute, Guangzhou Quality Supervision and Inspection Research Institute, Daoming Optical Co., Ltd., Traffic Management Research Institute of the Ministry of Public Security. The main drafters of this document. Li Qian, Pan Jiangen, Zhang Baozhou, Zheng Chundi, Su Wenying, He Huayang, Chen Yousan, Li Jia, Liu Hongxin, Tu Wangping, Wen Shaokai, Wang Hong, Ma Jingjie, Xu Hechen. Retroreflective measurement method1 ScopeThis document describes the geometric system of retro-reflection applications and specifies the measurement method of retro-reflection. This document is applicable to the optical performance measurement of retro-reflectors and retro-reflective materials.2 Normative referencesThe content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 26377 Retroreflective measuring instrument GB/T 39388 Illuminance meter and luminance meter performance characterization method (GB/T 39388-2020, CIES023/E.2013, IDT) CIE51.2-1999 A method for evaluating the quality of daylight simulators for chromaticity measurement (A method forassessingthe qualityofdaylightsimulatorsforcolorimetry)3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 General definition 3.1.1 Retroreflection A reflection of reflected light returning from the opposite direction close to the incident light. When the direction of the incident light changes within a large range, it can still be Keep this nature. Note 1.Retro-reflection is also called retro-reflection. Note 2.The conical spatial distribution of retro-reflected light is shown in Figure 1. Figure 1 Schematic diagram of retro-reflected light cone space ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 40965-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 40965-2021_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 40965-2021_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 40965-2021_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. 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