ISO 14135-2:2021

INTERNATIONAL ISO
STANDARD 14135-2
Fourth edition
2021-02
Optics and photonics — Specifications
for telescopic sights —
Part 2:
High-performance instruments
Optique et photonique — Spécifications pour lunettes de pointage —
Partie 2: Instruments haute performance
Reference number
©
ISO 2021
© ISO 2021
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ii © ISO 2021 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 2
5 Interfaces . 2
6 Fundamental requirements . 2
7 Consumer information . 4
7.1 Marking . 4
7.2 Information brochures . 4
7.3 Conformity . 4
Annex A (informative) Recommended interface dimensions . 6
Bibliography . 9
Foreword
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
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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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iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee
SC 4, Telescopic systems.
This fourth edition cancels and replaces the third edition (ISO 14135-2:2017), which has been
technically revised. The main changes compared to the previous edition are as follows:
— critical eye relief added to the product information.
A list of all parts in the ISO 14135 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved

INTERNATIONAL STANDARD ISO 14135-2:2021(E)
Optics and photonics — Specifications for telescopic
sights —
Part 2:
High-performance instruments
1 Scope
This document applies to high-performance telescopic sights, used on hand-held firearms and
airguns. It contains a classification of the usage of telescopic sights and specifies interfaces, minimum
requirements and tolerances to their performances.
General-purpose telescopic sights are specified in ISO 14135-1.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 14132-1, Optics and photonics — Vocabulary for telescopic systems — Part 1: General terms and
alphabetical indexes of terms in ISO 14132
ISO 14132-3, Optics and photonics — Vocabulary for telescopic systems — Part 3: Terms for telescopic sights
ISO 14490-1, Optics and optical instruments — Test methods for telescopic systems — Part 1: Test methods
for basic characteristics
ISO 14490-3, Optics and photonics — Test methods for telescopic systems — Part 3: Test methods for
telescopic sights
ISO 14490-5, Optics and photonics — Test methods for telescopic systems — Part 5: Test methods for
transmittance
ISO 14490-7, Optics and photonics — Test methods for telescopic systems — Part 7: Test methods for limit
of resolution
ISO 20711, Optics and photonics — Environmental requirements — Test requirements for telescopic systems
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 14132-1 and ISO 14132-3 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsin
...