90.60 Close of review Jun 5, 2026
ISO
ISO/TC 172/SC 3 Optical materials and components
International Standard
37.020 Optical equipment
Published
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.
WITHDRAWN
ISO 17328:2014
PUBLISHED
ISO 17328:2021
90.60
Close of review
Jun 5, 2026