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NF EN ISO 9342-1, S12-134-1 (07/2023)
Optique et instruments d'optique - Verres étalons pour l'étalonnage des frontofocomètres - Partie 1 : verres de référence pour frontofocomètres pour le mesurage des verres de lunettes
Automatic translation from French :
Optics and optical instruments - Standard lenses for calibrating frontofocometers - Part 1: reference lenses for frontofocometers for measuring spectacle lenses
Automatic translation from French :
Optics and optical instruments - Standard lenses for calibrating frontofocometers - Part 1: reference lenses for frontofocometers for measuring spectacle lenses
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Summary
This document specifies the requirements for reference lenses for the calibration and verification of lens meters used for measuring spectacle lenses, for example those conforming to ISO 8598-1. It also provides a method for determining the rear frontal power of reference lenses. NOTE It is recognized that other reference lenses with powers within the given range, manufactured to the same standards of accuracy and curvature, but with different front-to-back powers, may be used. However, for the calibration of digital display focimeters with rounding, only lenses with integer power ratings may be used, as described in 4.1.
(Automatic translation from French)
(Automatic translation from French)
Technical characteristics
| Publisher | Association Française de Normalisation (AFNOR) |
| Publication Date | 07/01/2023 |
| Release Date | 07/01/2023 |
| Page Count | 31 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
