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ISO 9342-1:2023

Optics and optical instruments - Test lenses for calibration of focimeters - Part 1: Reference lenses for focimeters used for measuring spectacle lenses

standard by International Organization for Standardization , 07/01/2023

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Full Description

This document specifies requirements for reference lenses for the calibration and verification of focimeters that are used for the measurement of spectacle form lenses, e.g. those complying with ISO 8598-1. It also gives a method for the determination of the back vertex power of the reference lenses.

NOTE It is accepted that other reference 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 4.1, can be used for the calibration of digitally-rounding focimeters.

 

Product Details

Published:
07/01/2023
File Size:
1 file , 1.4 MB
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This product is unavailable in Ukraine, Russia, Belarus
 

Document History

  1. ISO 9342-1:2023

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    Optics and optical instruments - Test lenses for calibration of focimeters - Part 1: Reference lenses for focimeters used for measuring spectacle lenses

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  2. 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

    • Historical Version