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ISO 6760-1:2025

Optics and photonics — Test method for temperature coefficient of refractive index of optical glasses — Part 1: Minimum deviation method

Publication date:   Jul 14, 2025

General information

60.60   Standard published   Jul 14, 2025

ISO

ISO/TC 172/SC 3 Optical materials and components

International Standard

37.020   Optical equipment

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Scope

This document specifies the measurement method used for calculating the temperature coefficient of the refractive index by measuring the refractive index, which changes with the temperature of the optical glass using the minimum deviation method.
The intended temperature range for the specified measurement method is –40 °C to +80 °C.
The intended wavelength range for the specified measurement method is 365 nm to 1 014 nm.
The intended accuracy for the specified measurement method is 1 × 10-6 K-1.

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ISO 6760-1:2024

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ISO 6760-1:2025
60.60 Standard published
Jul 14, 2025