ISO 19740:2018

INTERNATIONAL ISO
STANDARD 19740
First edition
2018-05
Optics and photonics — Optical
materials and components — Test
method for homogeneity of infrared
optical materials
Optique et photonique — Matériaux et composants optiques —
Méthodes d’essai pour déterminer l’homogénéité des matériaux
optiques infrarouges
Reference number
ISO 19740:2018(E)
©
ISO 2018

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ISO 19740:2018(E)

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ii © ISO 2018 – All rights reserved

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ISO 19740:2018(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 3
5.1 Apparatus arrangement . 3
5.2 Optical module of interferometer . 4
5.3 Reference flat . 4
5.4 Standard mirror . 4
5.5 Image sensor . 4
5.6 Computer data collecting, processing and displaying system. 4
5.7 Thickness measurement equipment . 4
6 Test conditions . 4
6.1 Temperature . 4
6.2 Relative humidity . 4
6.3 Vibration isolation . 4
6.4 Airflow . 5
7 Sample .
...