nsBAS EN ISO 9342-1:2024
Optics and optical instruments - Test lenses for calibration of focimeters - Part 1: Reference lenses for focimeters used for measuring spectacle lenses
General information
Status:Project
Number of pages:26
Adoption method:Proglašavanje
Language:engleski
Edition:2.
Realization date:28.03.2024
Forseen date for next stage code:27.05.2024
Technical committee:BAS/TC 25, Healthcare
ICS:
11.040.70, Ophthalmic equipment
Abstract
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.
Lifecycle
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Original document and degree of correspondence
EN ISO 9342-1:2023, identical
ISO 9342-1:2023, identical
Relation to BAS standards
Work material
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