ISO 17328:2021

Optics and photonics — Optical materials and components — Test method for refractive index of infrared optical materials

Publication date: Nov 30, 2021

General information

Current stage: 90.20 Effective date: Jan 15, 2026

Originator: ISO

Owner: ISO/TC 172/SC 3

Type: International Standard

ICS: 37.020

Languages: English French

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Status: Published

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Scope

This document provides a standard method for measuring the relative refractive index to the air of infrared materials used in the infrared spectral range from 0,78 µm to 25 µm.
This document excludes methods for measuring the refractive index of birefringent materials and methods for measuring the complex refractive index.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 17328:2014

NOW

PUBLISHED
ISO 17328:2021
90.20 Standard under periodical review
Jan 15, 2026

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