ISO 9342-1-2005 光学和光学仪器.焦距计校正用检验镜头.第1部分:测量眼镜镜片的焦距计用检验镜头

标准号：ISO 9342-1-2005
中文标准名称：光学和光学仪器.焦距计校正用检验镜头.第1部分:测量眼镜镜片的焦距计用检验镜头
英文标准名称：Optics and optical instruments - Test lenses for calibration of focimeters - Part 1: Test lenses for focimeters used for measuring spectacle lenses
标准类型：N30
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：N30
国际标准分类号：11.040.70
适用范围：This part of ISO 9342 specifies requirements for test lenses for the calibration of focimeters that are used for the measurement of spectacle form lenses. NOTE It is accepted that other test lenses can also be used with powers within the given range, manufactured to the same standard of accuracy and form, but different back vertex powers. However, only lenses with integer nominal powers, as described in Annex A, can be used for the calibration of digitally-rounding focimeters.