DIN EN ISO 9342-1 E:2022 光学和光学仪器 焦度计校准用测试镜片 第1部分：用于测量眼镜片的焦度计参考镜片 (ISO/DIS 9342-1:2022) 草案
Draft Document - Optics and optical instruments - Test lenses for calibration of focimeters - Part 1: Reference lenses for focimeters used for measuring spectacle lenses (ISO/DIS 9342-1:2022); German and English version prEN ISO 9342-1:2022