International Standard
ISO 11421:2025
Optics and photonics — Uncertainty of optical transfer function (OTF) measurement
Reference number
ISO 11421:2025
Edition 2
2025-11
© ISO 2026
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Published (Edition 2, 2025)

ISO 11421:2025

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CHF 181
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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 2025-11
    Stage
    : International Standard published [60.60]
  • Edition
     : 2
    Number of pages
     : 44
  • Technical Committee :
    ISO/TC 172/SC 1
    ICS :
    17.180.01 
  • RSS updates

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

9
Industry, Innovation and Infrastructure

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