標準號：ISO 9342-1-2005
中文標準名稱：光學和光學儀器.焦距計校正用檢驗鏡頭.第1部分:測量眼鏡鏡片的焦距計用檢驗鏡頭
英文標準名稱：Optics and optical instruments - Test lenses for calibration of focimeters - Part 1: Test lenses for focimeters used for measuring spectacle lenses
標準類型：N30
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：N30
國際標準分類號：11.040.70
適用范圍：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.