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GB 39552.1-2020: Sunglasses and sun glare filters - Part 1: General requirements Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB 39552.1-2020: Sunglasses and sun glare filters - Part 1: General requirements---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB39552.1-2020GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 11.040.70 Y 89 Sunglasses and sunglare filters - Part 1.General requirements (ISO 12312-1.2013, Eye and face protection - Sunglasses and related eyewear - Part 1.Sunglasses for general use, MOD) Issued on. NOVEMBER 17, 2020 Implemented on. DECEMBER 01, 2021 Issued by. State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 6 4 Structure and material... 6 5 Transmittance... 7 6 Optical properties... 11 7 Fatigue strength of sunglasses... 12 8 Nose bridge deformation and lens holding force... 13 9 Resistance to light radiation... 13 10 Flame retardant... 14 11 Coating performance... 14 12 Dimensions of sunglare filters... 15 13 Impact resistance... 15 14 Wear resistance... 15 15 Nickel precipitation... 16 16 Selection of test sample... 16 17 Marks, packaging, transportation and storage... 18 Annex A (informative) List of comparison on chapter number between this Part and ISO 12312-1.2013... 21 Annex B (informative) Instructions for use for sunglare filters... 22ForewordGB/T 39552 "Sunglasses and sunglare filters" is divided into two parts. - Part 1.General requirements; - Part 2.Test methods. This Part is Part 1 of GB/T 39552. This Part was drafted in accordance with the rules given in GB/T 1.1-2009. This Part uses redrafting method to modify and adopt ISO 12312-1.2013 "Eye and face protection - Sunglasses and related eyewear - Part 1.Sunglasses for general use". Compared with ISO 12312-1.2013, there are many structural adjustments in this Part. Annex A lists a chapter number comparison list between this Part and ISO 12312-1.2013. The technical differences between this Part and ISO 12312-1.2013 as well as the reasons are as follows. - Regarding normative references, this Part has made adjustments with technical differences to adapt to China's technical conditions. The adjustments are collectively reflected in Chapter 2 "Normative references", and the specific adjustments are as follows. ● added GB 10810.1 (see 6.1.5), GB/T 14214-2019 (see 11.2), GB/T 26397 (see Chapter 3), GB/T 39552.2-2020 (see Chapter 5, Chapter 6, Chapter 7, Chapter 8, Chapter 9, Chapter 10, 11.1, Chapter 13) as references; ● used GB 10810.5 that was modified by adopting ISO 8980-5 to replace ISO 8980-5 (see Chapter 14); ● deleted ISO 4007. - Deleted the requirements for local change of vertex power in Chapter 6; in Chapter 12, deleted the requirements for temporal protection, so as to adapt to China's technical conditions; - Added the transmittance performance requirements for prescription corrective sunglasses and sunglare filters, the solar spectral transmittance requirements below the cut-off wavelength (see Chapter 5); Added coating bond strength (see Chapter 11), nickel precipitation (see Chapter 15); Adjusted the corresponding requirements in the impact strength of the filters (see Chapter 13) to meet the market demand; - Deleted Annex B; Merged the relevant technical requirements of Annex B into Chapter 5, Chapter 6, Chapter 13, and Chapter 17, so as to increase the operability of the standard content. This Part was proposed by and shall be under the jurisdiction of Ministry of Industry and Information Technology of the People's Republic of China. Sunglasses and sunglare filters - Part 1.General requirements1 ScopeThis Part of GB/T 39552 specifies classification, requirements, test sample selection, marks and packaging for plain sunglasses and sunglare filters. This Part is applicable to general purpose (for example, road use and driving) sunglasses, sunglare filters, sunglasses clips and lens sets. Refer to this Part for the transmittance requirements of prescription corrective sunglasses and sunglare filters.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.3 Terms and definitionsFor the purposes of this document, the terms and definitions defined in GB/T 26397 as well as the followings apply. When the lens has one of the following conditions, it is called lens fractured. Sunglasses designed to eliminate the prism effect caused by the base curve of the filter.4 Structure and materialTake the reference point as the center. Within the area with a diameter of 30mm (excluding the width of 5mm from the edge of the filter), there shall be no defects on the surface or inside of the filter that may be harmful to vision.5 TransmittanceFor photochromic filters, when expressing the transmission performance of photochromic filters, two categories shall be used, corresponding to the transmittance of the filter in the color-fading state and the discolored state. Its classification shall meet the requirements of Table 1.6 Optical propertiesIn the wearing position of the sunglasses, use the telescope method to measure (other equivalent methods can also be used, such as the focal meter method). The deviation of the spherical and cylindrical powers shall meet the requirements of Table 2.7 Fatigue strength of sunglassesThe test is carried out in accordance with the method specified in 8.1 of GB/T 39552.2-2020, and the following requirements shall be met.8 Nose bridge deformation and lens holding forceThe test is carried out according to the method specified in 8.2 of GB/T 39552.2- 2020, and the following requirements shall be met.9 Resistance to light radiationThe relative change limit value of the transmittance of the filters before and after irradiation is calculated according to formula (1). The relative change value shall meet the requirements of Table 4.The inspection shall be carried out in accordance with the method specified in 8.3 of GB/T 39552.2-2020.10 Flame retardantTest according to the method specified in 8.4 of GB/T 39552.2-2020.All parts of the sunglasses (including at least the temples, rings and filters) shall not continue to burn. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB 39552.1-2020 be delivered?Answer: The full copy PDF of English version of GB 39552.1-2020 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB 39552.1-2020_English with my colleagues?Answer: Yes. 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