标准摘要
[中文适用范围]： ISO 19012 的这一部分规定了显微镜物镜上“Plan”标记的使用，并定义了平面物体表面原像清晰区域的直径。ISO 19012 的这一部分适用于使用制造商指定的物镜、筒镜和目镜组合进行的视觉观察。 [外文原描述]： ISO 19012-1:2013 specifies the use of the marking "Plan" on microscope objectives, and defines the diameter of the sharp region of the primary image of a flat object surface. ISO 19012-1:2013 applies to visual observation using the combination of objective lens, tube lens and eyepiece, as specified by the manufacturer. This marking is consistent with ISO 8578.
英文名称Microscopes — Designation of microscope objectives — Part 1: Flatness of field/Plan