标准编号:	GB/T 40047-2021
中文名称:	个体防护装备 运动眼面部防护 滑雪镜
英文名称:	Personal protective equipment-Eye and face protection for sports use-Ski goggles
中标分类:	Y56    体育用品
行业分类:	GB    国家标准
ICS分类:	97.220.40 97.220.40    室外和水上运动设备 97.220.40
发布机构:	国家市场监督管理总局 国家标准化管理委员会
发布日期:	2021-04-30
标准状态:	valid
翻译语言:	英文
文件格式:	PDF
中文字符数:	17000 字
翻译价格(元):	1190.0
交付时间:	付款后 1 个工作日

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization — Part 1: Rules for the structure and drafting of standardizing documents. Attention is drawn to the possibility that some of the elements of this standard may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights. This document was proposed by the Ministry of Emergency Management of the People's Republic of China. This document is under the jurisdiction of the National Technical Committee on Sporting Goods of Standardization Administration of China (SAC/TC 291).   Introduction Since the successful bid for the 2022 Winter Olympics in Beijing and Zhang Jiakou, Beijing, Hebei, Changchun, Liaoning, Inner Mongolia, Xinjiang and other provinces have issued implementation opinions on ice and snow sports. More diverse ice and snow activities held around the country and people's growing enthusiasm for participating in ice and snow sports have provided great opportunities for the further prosperity of ice and snow sports. At the same time, it is common to get injured in the eye and face in ice and snow sports, and even minor injuries will cause changes in patients' lifestyles. Statistics show that people who have common sense of eye protection and protect their eyes in sports have an injury rates in the eye and face 24% fewer than those without eye protection. Taking proper protective measures for eye and face during snow and ice sports can reduce injuries severity and protect users' personal safety. This document provides index requirements for ski goggles applicable to Chinese facial characteristics, and regulates the ski goggles test methods used by enterprises and testing institutions, so as to enhance the competitiveness of relevant domestic products in the international market, and promote the international trade, on the premise of protecting human eyes and face, based on the current production, sales and use of ski goggles in China, with reference to the measurement methods specified in the existing domestic standards and the international and foreign advanced standards (such as EU standard EN 174-2001, American standard ASTM F659-2010 and international draft standard ISO/FDIS 18527-1). Personal protective equipment — Eye and face protection for sports use — Ski goggles 1 Scope This document specifies the requirements and test methods for goggles used for skiing among eye and face protectors classified as personal protective equipment (hereinafter referred to as “ski goggles”). This document is applicable to ski goggles used for skiing. This document is not applicable to sunglasses, goggles capable of vision correction and goggles for snowmobiles. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions 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. GB/T 2410-2008 Determination of the luminous transmittance and haze of transparent plastics GB 13511.1-2011 Assembled spectacles — Part 1: Single-vision and multifocal GB 13511.2-2011 Assembled spectacles — Part 2: Progressive power GB 14866 The specifications for personal eye-protectors GB/T 32166.2-2015 Personal protective equipment — Eye and face protection — Occupational eye and face protectors — Part 2: Test methods 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply. 3.1 design reference point one or more points specified by the manufacturer on the processed surface of the ocular blank or on the surface of unassembled ocular Note: Its design specifications are applicable to these points. The technical parameters may only apply to the ocular in the “as-worn” position——for example, when the ocular is added with prism to compensate the face angle. 3.2 reference points (for testing) points on the ocular specified by the manufacturer (of unassembled binocular) Note 1: These are design reference points on the specified optical axis relative to the measuring instrument. In the absence of any specific explanation, the distances from the reference point R (for testing) to the tangent lines at the bottom and top of the ocular are equal, which is located on the symmetrical vertical dividing lines of both oculars, and the pupillary distance between the two R points on the headform is shown in Figure 1. Note 2: Generally, the values of dioptre and prismatic deviation measured on the surface of ocular may be different from those measured in the specified direction relative to the line of sight, because the angles of incident light passing through the ocular may be different. Keys: b——the distance between the tangent lines at the bottom and top of the ocular; PD——the specified pupillary distance; R——the reference point. Figure 1 Reference points for unassembled binocular 3.3 transmittance ratio of the transmission radiation or luminous flux of the material to the incident luminous flux under given conditions when the spectral composition, polarization and incident radiation in geometric distribution are given Note: It is generally expressed by τ. 3.4 spectral transmittance ratio of the spectral transmission radiation or luminous flux of the material to the incident spectral radiation or luminous flux at the specified wavelength λ Note: Spectral transmittance is generally expressed as τF(λ). See GB/T 30042-2013, 4.7 and 4.4 for the definitions of spectral radiation and luminous flux. 3.5 solar UV transmittance weighted average of spectral transmittance with the spectral power distribution ES(λ) of solar radiation with air mass (AM) 2 at sea level and the relative effectiveness function S(λ) for UV radiation as weights, in the spectral range of 280 nm ~ 380 nm Note 1: The solar UV transmittance is τSUV, which is usually expressed as a percentage and calculated using Equation (1): (1) where, λ——the wavelength of UV radiation at nanometer level; τF(λ)——the spectral transmittance of ski goggles; ES(λ)——the spectral power distribution of solar radiation; S(λ)——the relative effectiveness function for UV radiation; W(λ)——the weighting function; Note 2: The complete weighting function is W(λ)= ES(λ)·S(λ), which is given in GB/T 30042-2013, Annex A, Table A.1. Note 3: The air mass is defined in GB/T 30042-2013, 9.1.16. 3.6 solar UV-A transmittance weighted average of spectral transmittance with the spectral power distribution ES(λ) of solar radiation with AM 2 at sea level and the relative effectiveness function S(λ) for UV radiation as weights, in the spectral range of 315 nm ~ 380 nm Note 1: The solar UV transmittance is τSUVA, which is usually expressed as a percentage and calculated using Equation (2): (2) where, λ——the wavelength of UV radiation at nanometer level; τF(λ)——the spectral transmittance of ski goggles; ES(λ)——the spectral power distribution of solar radiation; S(λ)——the relative effectiveness function for UV radiation; W(λ)——the weighting function; Note 2: The complete weighting function is W(λ)= ES(λ)·S(λ), which is given in GB/T 30042-2013, Annex A, Table A.1. Note 3: the air mass is defined in GB/T 30042-2013, 9.1.16. 3.7 solar UV-B transmittance weighted average of spectral transmittance with the spectral power distribution ES(λ) of solar radiation with AM 2 at sea level and the relative effectiveness function S(λ) for UV radiation as weights, in the spectral range of 280 nm ~ 315 nm Note 1: The solar UV transmittance is τSUVB, which is usually expressed as a percentage and calculated using Equation (3): (3) where, λ——the wavelength of UV radiation at nanometer level; τF(λ)——the spectral transmittance of ski goggles; ES(λ)——the spectral power distribution of solar radiation; S(λ)——the relative effectiveness function for UV radiation; W(λ)——the weighting function; Note 2: The complete weighting function is W(λ)= ES(λ)·S(λ), which is given in GB/T 30042-2013, Annex A, Table A.1. Note 3: The air mass is defined in GB/T 30042-2013, 9.1.16. 3.8 mean (380 nm ~ 400 nm) transmittance mean transmittance between 380 nm and 400 nm Note 1: The mean (380 nm ~ 400 nm) transmittance is τm380～400, which is usually expressed as a percentage and calculated using Equation (4): (4) where, λ——the wavelength of UV radiation at nanometer level. 3.9 luminous transmittance ratio of the luminous flux through the ocular to the incident luminous flux under specified lighting and observation conditions Note 1: The luminous transmittance is τV, which is usually expressed as a percentage and calculated using Equation (5): (5) where, λ——the optical wavelength at nanometer level; τF(λ)——the spectral transmittance of ski goggles; V(λ)——the spectral luminous efficiency function for photopic vision. SD65(λ)——the spectral distribution of CIE standard illuminant D65 (see ISO 11664-2). Note 2: τV is defined as the integration result of Equation (5) under standard illuminant D65. In other cases, SD65(λ) is replaced by the spectral distribution of standard illuminant A or other related illuminants. Note 3: The spectral radiation distribution value SD65(λ) of CIE standard illuminant and the spectral luminous efficiency function V(λ) for human eyes are given in http://www.cie.co.at/index_ie.html, where (λ) = V(λ). The result of spectral value is given in GB/T 30042-2013, Annex A, Table A.2. Note 4: See ISO 11664-1 for the value of spectral luminous efficiency function V(λ). 3.10 solar blue-light transmittance weighted average of spectral transmittance with the spectral power distribution ES(λ) of solar radiation with AM 2 at sea level and the blue light hazard function B(λ) as weights, in the spectral range of 380 nm ~ 500 nm Note 1: The solar blue-light transmittance is τsb, which is usually expressed as a percentage. A complete weight function is obtained from WB(λ)＝ES(λ)·B(λ). See GB/T 30042-2013, Annex A, Table A.1 for the value of the equation, provide interpolation value where necessary, and calculate it using Equation (6): (6) where, λ——the optical wavelength at nanometer level; τF(λ)——the spectral transmittance of ski goggles; ES(λ)——the spectral power distribution of solar radiation; B(λ)——the blue light hazard function; W(λ)——the weighting function; Note 2: The air mass is defined in GB/T 30042-2013, 9.1.16. 3.11 solar IR transmittance characteristic value of spectral transmittance with the spectral power distribution ES(λ) of solar radiation with AM 2 at sea level as weight, in the spectral range of 780 nm ~ 2,000 nm Note 1: The solar UV transmittance is τSIR, which is usually expressed as a percentage and calculated using Equation (7): (7) where, λ——the wavelength of IR radiation at nanometer level; τF(λ)——the spectral transmittance of ski goggles. Note 2: The spectral power distribution ES(λ) of solar radiation is given in GB/T 30042-2013, Table A.5. Note 3: The air mass is defined in GB/T 30042-2013, 9.1.16. 3.12 reflectance ratio of the reflected radiant flux or luminous flux to the incident flux under the given conditions of spectroscopic composition, polarization, and incident radiation in geometric distribution Note: Radiant flux and luminous flux, generally expressed as ρ, are defined in GB/T 30042-2013, 4.7 and 4.4. 3.13 wide angle scatter average angle of forward scattered light deviating from the expected propagation direction, which is greater than 2.5° Note 1: Wide angle scatter is usually measured with visibility meter. Note 2: The measurement of wide angle scatter is usually expressed as a percentage of all (uniform and scattered) transmitted light. 3.14 dioptre unit of light gathering power of an ocular, lens or surface, or the axis of a wavefront (refractive index divided by radius) Note 1: Dioptre is usually abbreviated as “D” or “dpt”. Note 2: Dioptre is expressed in m-1. 3.15 spherical power back vertex power of the ocular, or vertex power of the reference principle meridian selected from the two principle meridians of the astigmatic oculars Note 1: Spherical power is usually abbreviated as “S”. Note 2: Spherical power is expressed in dioptre (D, dpt). 3.16 principal meridians two perpendicular meridians of astigmatic oculars or lenses, which are parallel to the line formed by connecting two foci 3.17 astigmatic power difference between dioptres on two principle meridians Note: Astigmatic power is expressed in dioptre (D, dpt).   3.18 prismatic deviation change in the direction of light to get the refraction effect Note 1: Prismatic deviation is expressed in prism dioptre (cm/m), which is abbreviated as △. Note 2: The inherent prismatic deviation of the ocular or the lens, or the position and direction of light passing through the ocular or the lens relative to the optical axis, may cause the prismatic deviation. 3.19 prism imbalance algebraic difference between the left and right oculars of the eye protector measured at the reference points (for testing), caused by redundant prismatic deviation Note 1: A horizontal imbalance and a vertical imbalance may be measured from the prismatic deviation. Note 2: For horizontal components (e.g., inside or outside), the horizontal prism imbalance is equal to the addition of prismatic deviations in the same base direction, then minus the prismatic deviation in the opposite base direction; for vertical components (e.g., up or down), the vertical prism imbalance is equal to the subtraction of prismatic deviations in the same base direction, then plus the prismatic deviation in the opposite base direction. Note 3: For example, a pair of glasses, whose prismatic deviation at the right base is 0.5 cm/m inward and whose prismatic deviation at the left base is 0.2cm/m outward, have a horizontal prism imbalance of 0.3 cm/m. 4 Basic requirements 4.1 Biocompatibility Ski goggles shall meet the requirements of use purpose and environment, without any factors affecting the health or safety of the wearer. Manufacturers shall minimize the damage caused by material precipitation to the wearer's skin, and pay attention to the sensitization, carcinogenicity, mutation and toxicity of materials for ski goggles. 4.2 Structure and adjustment Ski goggles shall be free of protrusions, sharp edges or other parts that may cause discomfort or injury during use. For detachable, adjustable and replaceable structures or accessories on ski goggles, manufacturers shall make the detachment, adjustment and replacement as convenient as possible, and operation process as simple as possible and the operation process shall meet the requirements of ergonomics.

Foreword i Introduction ii 1 Scope 2 Normative references 3 Terms and definitions 4 Basic requirements 4.1 Biocompatibility 4.2 Structure and adjustment 4.3 Cleaning and disinfection 4.4 Material and surface quality of the ocular 4.5 Headform 4.6 Firmness and adaptability 5 Requirements 5.1 Transmittance 5.2 Scattered light 5.3 Dioptre 5.4 Requirements for mechanical properties 5.5 Field of view 5.6 Minimum area to be protected 5.7 UV radiation resistance 5.8 Fire resistance property 5.9 Water resistance and snow resistance 5.10 Anti-fog property 5.11 Resistance to abrasion 6 Test methods 6.1 Test method for transmittance 6.2 Test method for scattered light 6.3 Test method for dioptre 6.4 Test method for mechanical strength 6.5 Test methods for field of view 6.6 Test methods for UV radiation resistance 6.7 Test method for flame retardance 6.8 Test method for water resistance and snow resistance 6.9 Test method for anti-fog property 6.10 Test method for resistance to abrasion Bibliography

个体防护装备 运动眼面部防护 滑雪镜 1 范围 本文件规定了个体防护装备眼面部防护具中用于滑雪的护目镜（以下简称“滑雪镜”）的要求与测试方法。 本文件适用于滑雪运动时使用的滑雪镜。 本文件不适用于太阳镜、具有矫正视力的护目镜及雪地汽车用护目镜。 2 规范性引用文件 下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用于本文件。 GB/T 2410—2008 透明塑料透光率和雾度的测定 GB 13511.1—2011 配装眼镜 第1部分：单光和多焦点 GB 13511.2—2011 配装眼镜 第2部分：渐变焦 GB 14866 个人用眼护具技术要求 GB/T 32166.2—2015 个体防护装备 眼面部防护 职业眼面部防护具 第2部分：测量方法 3 术语和定义 下列术语和定义适用于本文件。 3.1 设计基准点 design reference point 由生产商在镜片毛坯已完成加工的表面上或成镜前表面上规定的某一个或多个点。 注：其设计规范适用于这些点。各技术参数可能仅在佩戴位置适用于镜片——例如当镜片加入棱镜来补偿脸型角度时。 3.2 参考点（测量用） reference points（for testing） （覆盖双眼的未装成镜片）制造商指定的镜片上的点。 注1：即设计参考点，并且在指定的相对于测量仪器的光轴上。在没有任何具体说明时，测量参考点R到镜片底部和顶部切线的距离相等，位于两边镜片对称的垂直分割线上，两R点中间为瞳距，头部模型瞳距尺寸见图1。 注2：一般在镜片表面测量屈光度和棱镜度的值，可能会与在指定的相对于眼睛视线的方向测量的值不同，这是由于穿过镜片的入射光线的角度可能不同。 说明： b——镜片底部和顶部切线间的距离； PD——指定的瞳距； R——参考点。 图1 覆盖双眼的未装成镜片的参考点 3.3 透射比 transmittance 给出了光谱成分、偏振和几何分布的入射辐射时，材料的透射辐射或光通量与既定条件的入射光通量的比。 注：一般用τ表示。 3.4 光谱透射比 spectral transmittance 材料对于指定波长λ的透射光谱辐射或光通量与入射光谱辐射或光通量之比。 注：光谱透射比一般用τF（λ）表示。光谱辐射与光通量的定义见GB/T 30042—2013的4.7、4.4。 3.5 太阳紫外透射比 solar UV transmittance 在光谱范围280 nm～380 nm，以海平面大气质量2太阳光谱功率分布Es（λ）和紫外辐射的相对效应函数S（λ）为权重的光谱透射比的加权平均值。 注1：太阳紫外透射比为τSUV，通常以百分数表示，并且按公式（1）计算： （1） 式中： λ——纳米级的紫外辐射的波长； τF（λ）——滑雪镜的光谱透射比； ES（λ）——太阳光谱功率分布； S（λ）——紫外辐射相对效应函数； W（λ）——权重函数。 注2：完整的权重函数为：W（λ）＝ES（λ）·S（λ），权重函数在GB/T 30042—2013附录A的表A.1中给出。 注3：大气质量的定义参见GB/T 30042—2013的9.1.16。 3.6 太阳长波紫外透射比 solar UV-A transmittance 在光谱范围315 nm～380 nm，以海平面大气质量2时，太阳光谱功率分布ES（λ）和紫外辐射的相对效应函数S（λ）为权重的光谱透射比的加权平均值。 注1：太阳长波紫外透射比为τSUVA，通常以百分数表示，并且按公式（2）计算： （2） 式中： λ——纳米级的紫外辐射的波长； τF（λ）——滑雪镜的光谱透射比； ES（λ）——太阳光谱功率分布； S（λ）——紫外辐射相对效应函数； W（λ）——权重函数。 注2：完整的权重函数为：W（λ）＝ES（λ）·S（λ），权重函数在GB/T 30042—2013附录A的表A.1中给出。 注3：大气质量的定义参见GB/T 30042—2013的9.1.16。 3.7 太阳中波紫外透射比 solar UV-B transmittance 在光谱范围280 nm～315 nm，以海平面大气质量2时太阳光谱功率分布ES（λ）和紫外辐射的相对效应函数S（λ）为权重的光谱透射比的加权平均值。 注1：太阳中波紫外透射比为τSUVB，通常以百分数表示，并且按公式（3）计算： （3） 式中： λ——纳米级的紫外辐射的波长； τF（λ）——滑雪镜的光谱透射比； ES（λ）——太阳光谱功率分布； S（λ）——紫外辐射相对效应函数； W（λ）——权重函数。 注2：完整的权重函数为：W（λ）＝ES（λ）·S（λ），权重函数参见GB/T 30042—2013附录A的表A.1。 注3：大气质量的定义参见GB/T 30042—2013的9.1.16。 3.8 平均光谱（380 nm～400 nm）透射比 mean（380 nm～400 nm）transmittance 380 nm～400 nm间的平均透射比。 注：平均光谱（380 nm～400 nm）透射比为τm380～400，通常以百分数表示，并且按公式（4）计算： （4） 式中： λ——纳米级的紫外辐射的波长。 3.9 可见光透射比 luminous transmittance 在规定光照条件和观察条件下，透过镜片的光通量与入射光通量的比。 注1：可见光透射比为τV，通常以百分数表示，并且用公式（5）计算： （5） 式中： λ——纳米级的光波长； τF（λ）——滑雪镜的光谱透射比； V（λ）——明视觉光谱光视效率函数； SD65（λ）——CIE标准光源D65的光谱分布（见ISO 11664-2）。 注2：τV定义为使用标准光源D65时式（5）的积分结果，其他情况下，SD65（λ）以标准光源A或相关光源的光谱分布替代。 注3：CIE标准光源光谱辐射分布值SD65（λ）和人眼光谱光视效函数V（λ）在http：//www.cie.co.at/index_ie.html网址中给出，其中 （λ）＝V（λ）。得出的光谱值在GB/T 30042—2013附录A的表A.2中给出。 注4：光谱光视效率函数V（λ）的数值参见ISO 11664-1。 3.10 太阳蓝光透射比 solar blue-light transmittance 在光谱范围380 nm～500 nm，以海平面大气质量2时，太阳光谱功率分布ES（λ）和蓝光损伤函数B（λ）为权重的光谱透射比的加权平均值。 注1：太阳蓝光透射比为τsb，通常以百分数表示。完整的权重函数由WB（λ）＝ES（λ）·B（λ）得出。公式的值参见GB/T 30042—2013附录A的表A.1，并在必要时给出内插值，用公式（6）计算： （6） 式中： λ——纳米级的光波长； τF（λ）——滑雪镜的光谱透射比； ES（λ）——太阳光谱功率分布； B（λ）——蓝光损伤函数； W（λ）——权重函数。 注2：大气质量的定义参见GB/T 30042—2013的9.1.16。 3.11 太阳红外透射比 solar IR transmittance 在光谱范围780 nm～2000 nm之间，以太阳光谱功率分布ES（λ）为权重，海平面大气质量2时的光谱透射比的标准值。 注1：太阳红外透射比为τSIR，通常以百分数表示，并且按公式（7）计算： （7） 式中： λ——纳米级的红外辐射的波长； τF（λ）——滑雪镜的光谱透射比。 注2：太阳光谱功率分布ES（λ）在GB/T 30042—2013表A.5中给出 注3：大气质量的定义参见GB/T 30042—2013的9.1.16。 3.12 反射比 reflectance （给出分光光谱组成、偏振性和几何分布的入射辐射）反射辐射通量或光通量与入射通量的比值。 注：辐射通量与光通量一般表示为p，其定义参见GB/T 30042—2013的4.7、4.4。 3.13 广角散射 wide angle scatter 前向散射光平均偏离预期传播方向的角度大于2.5°。 注1：通常使用能见度测量仪测量广角散射。 注2：广角散射的测量通常用所有（均匀的和散射的）透射光的百分比来表示。 3.14 屈光度 dioptre 镜片、透镜或表面，或波阵面的轴辏（折射率除以半径）的聚光能力的单位。 注1：屈光度的常用缩写为D或dpt。 注2：屈光度表示为负一次方米（m－1）。 3.15 球镜度 spherical power 球镜度是镜片的后顶焦度，或是散光镜片两个主子午线中，所选用的基准主子午线的顶焦度。 注1：球光度的常用缩写为S。 注2：球镜度的单位为屈光度（D，dpt）。 3.16 主子午线 principal meridians 散光镜片或透镜的两个互相垂直的子午线，与两焦点构成的线平行。 3.17 柱镜度 astigmatic power 两条主子午线上屈光度之差。 注：柱镜度的单位为屈光度（D，dpt）。 3.18 棱镜度 prismatic deviation 使光线改变方向得到折射的效果。 注1：棱镜度的单位为棱镜度屈光度，缩写为△，表示为cm/m。 注2：镜片或透镜本身的棱镜度，或光穿过镜片或透镜相对于光轴的位置和方向，都可能残生棱镜度偏差。 3.19 棱镜度互差 prism imbalance 在参考测量点处测量的，眼部护具的左右镜片之间，多余的棱镜度作用的代数差值。 注1：棱镜度偏差可测量得出一个水平互差和一个垂直互差。 注2：对于水平分量（例如里或外），水平棱镜度互差等于相同的基底方向相加，再减去相反的基底方向；对于垂直分量（例如上或下），垂直棱镜度互差减去相同的基底方向再加上相反的基底方向。 注3：例如：一副眼镜，右侧基底向内有0.5cm/m，左侧基底向外有0.2cm/m，那么它就具有0.3cm/m的水平棱镜度互差。 4 基本要求 4.1 生物相容性 滑雪镜应能满足使用目的和使用环境的要求，不应存在任何影响佩戴者健康或安全的因素。 制造商应尽可能降低材料析出给佩戴者皮肤造成的伤害，应注意滑雪镜所使用材料的致敏、致癌、致变异和毒性作用。 4.2 结构与调整 滑雪镜不应有突出物、尖锐边缘或其他可能在使用过程中引起不适或造成伤害的部分。 滑雪镜上可拆卸、调整、更换的结构或配件，制造商应确保其拆卸、调整、更换的便利性，尽量简化操作过程，操作过程应符合人类工效学要求。 4.3 清洁和消毒 制造商应在使用说明中提供滑雪镜的清洁、消毒和维护需用的材料、方法和步骤。 按照制造商提供的方法进行清洁、消毒和维护后，滑雪镜不应出现防护性能减损以及影响佩戴者的健康。 4.4 镜片材质和表面质量 在以设计基准点为中心的直径为30 mm的圆形区域内，但不包括透镜边缘周围5 mm宽的边缘区域部分（如果该区域与圆形区域重叠），镜片不应有损害视力的缺陷。如，气泡、划痕、夹杂物、钝点、麻点、模具痕迹、冲刷、颗粒、剥落和起伏。 4.5 头部模型 滑雪镜使用的头部模型应符合GB 14866的要求。 4.6 牢固性和适应性 滑雪镜应具有可靠的牢固性，接触面部的部分应使用柔软有弹性的材料。滑雪镜头带应具有弹性，可调节，并能牢固地固定在头部或者头盔后部。头带的装配可承受在正常使用过程中产生的各种压力，不应发生撕裂或产生永久的变形。 5 要求 5.1 透射比 5.1.1 透射比分类 滑雪镜镜片参考点平均透射比τVD65应符合表1中的5种着色类别要求。这5个类别的透射比τVD65范围见表1。 5.1.2 太阳紫外线透射比 在以参考点为中心的10 mm半径圆内进行测试，基于镜片参考点的平均透射比τVD65确定的太阳UV-A透射比τSUVA、太阳UV-B透射比τSUVB、平均光谱（380 nm～400 nm）透射比τm380～400、可见光透射比τVD65、最大太阳红外透射比τSIR应符合表1中的要求。 表1 滑雪镜镜片的透射比要求 着色 类别 波长范围280 nm～400 nm 可见光谱范围 可选红外光谱范围 太阳UV-B最大透射比τSUVB（280 nm≤λ≤315 nm） 太阳UV-A最大透射比τSUVA（315 nm≤λ≤380 nm） 380 nm～400 nm 光谱最大平均透射比τm380～400 （380 nm≤λ≤400 nm） 可见光透射比 τVD65 （380 nm≤λ≤780 nm） 最大太阳红外透射比τSIR （780 nm≤λ≤2000 nm） S0 0.03τVD65 0.30τVD65 O.75τVD65 τVD65＞80％ τVD65 S1 43％＜τVD65≤80％ τVD65 S2 0.5τVD65 18％＜τVD65≤43％ τVD65 S3 0.15τVD65 8％＜τVD65≤18％ τVD65 S4 0.5％或者0.15τVD65 以二者较大者为准 3％＜τVD65≤8％ τVD65 5.1.3 一般透射比要求 具有滤光效果的滑雪镜的透射比均匀性应满足以下要求： a） 参考点周围区域的可见光透射比相对变化△FR和△FL不应超过表2的要求； b） 左右眼镜片参考点处可见光透射比的相对差异△P不应超过表2的要求。