ISO 20711:2017

INTERNATIONAL ISO
STANDARD 20711
First edition
2017-05
Optics and photonics —
Environmental requirements — Test
requirements for telescopic systems
Optique et photonique — Prescriptions d’environnement —
Prescriptions d’essai pour les systèmes télescopiques
Reference number
ISO 20711:2017(E)
©
ISO 2017

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ISO 20711:2017(E)

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ii © ISO 2017 – All rights reserved

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ISO 20711:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Subdivision of the instrument group “telescopic systems” . 2
5 Designation of environmental requirements and environmental tests .3
6 Specification of technical requirements and appropriate environmental tests .3
6.1 Acceleration of free fall . 3
6.2 Binoculars, monoculars and spotting scopes (instrument types 01 and 02) . 3
6.3 Telescopic sights (instrument type 03, 04 and 05) . 6
6.4 Astronomical telescopes (instrument type 06 and 07) . 8
7 Procedure. 9
© ISO 2017 – All rights reserved iii

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ISO 20711:2017(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations
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