ISO 11421:2025
International Standard
Current Edition
·
Approved on
03 November 2025
Optics and photonics — Uncertainty of optical transfer function (OTF) measurement
ISO 11421:2025 Files
English
44 Pages
Current Edition
BHD
83.6
ISO 11421:2025 Scope
This document gives general guidance on evaluating the sources of error in optical transfer function (OTF) equipment and in using this information to estimate errors in a measurement of OTF. It also gives guidance on assessing and specifying a general uncertainty for a specific measuring equipment, as well as recommending methods of routine assessment.
The main body of this document deals exclusively with the modulation transfer function (MTF) part of the OTF. The phase transfer function (PTF) is dealt with relatively briefly in Annex A.
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