DNS/ISO 9342-1: 2005

OPTICS AND OPTICAL INSTRUMENTS — TEST LENSES FOR CALIBRATION OF FOCIMETERS PART 1: TEST LENSES FOR FOCIMETERS USED FOR MEASURING SPECTACLE LENSES (ISO 9342-1: 2005, IDT)


Status: Public comments
Start date: 20240718
End date: 20240916

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.  


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