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ISO
ISO/TC 172/SC 3 Optical materials and components
International Standard
This document provides rules for the measurement of the spectral internal transmittance of plane parallel elements using a spectrophotometer. It is applicable solely to the measurement of internal transmittance and does not apply to the regular and diffuse transmittance. It is applicable to test samples that are uncoated optical materials without optical power.
IN_DEVELOPMENT
ISO/CD 15368-2
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Close of voting/ comment period
Jan 24, 2026