Standard

NS-EN ISO 7944:2024

Jan 2025 Published

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Abstract

This document specifies reference wavelengths to be used for the characterization of optical materials, optical systems and instruments, and ophthalmic lenses. It defines the associated principal refractive indices and principal dispersions, as well as the Abbe numbers with regard to these reference wavelengths and principal dispersions.

Document information

Standard from SN
Published: 8 January 2025
Edition: 2024-12
Version: 1
Document type: NAT
ISBN:

ICS 11.040.70
ICS 17.180.01
National Committee CEN/TC 170

Product Relations

Replaces: NS-EN ISO 7944:1998
Adopted from: EN ISO 7944:2024

Product life cycle

Previous product

Withdrawn

NS-EN ISO 7944:1998

Withdrawn

NS-EN ISO 7944:1998/AC:2009
Current product

Published

NS-EN ISO 7944:2024

NS-EN ISO 7944:2024

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