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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

Jul 7, 2023

General information

60.60     Jul 7, 2023

ISO

ISO/TC 172/SC 7

International Standard

11.040.70  

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 9342-1:2005

NOW

PUBLISHED
ISO 9342-1:2023
60.60 Standard published
Jul 7, 2023

National adoptions

SSH EN ISO 9342-1:2023  
DPS

Optics and optical instruments - Test lenses for calibration of focimeters - Part 1: Reference lenses for focimeters used for measuring spectacle lenses (ISO 9342-1:2023)

60.60 Standard published

DPS/KT 316 more