老花镜CE认证

EN 14139:2010测试项目

- 结构 Construction
- 尺寸允差 Dimensional tolerance
- 高温尺寸稳定性Dimension Stability at Elevated Temperature
- 耐汗腐蚀 Resistance to Perspiration
- 鼻梁变形和镜片保持力 Bridge Deformation and lens retention
- 耐疲劳Mechanical Stability: Endurance
- 阻燃性Resistant to Ignition
- 透射比特性 Transmittance
- 光学度数允差 Optical power tolerances
- 棱镜度允差 Prismatic power tolerance
- 设计参考点 Design reference points
- 机械强度 Mechanical strength
- 表面质量 Material and surface quality
- 镍释放 Nickel release
- 资料与标签 Identification