ISO 14132-2:2015

INTERNATIONAL ISO
STANDARD 14132-2
Second edition
2015-11-15
Optics and photonics — Vocabulary
for telescopic systems —
Part 2:
Terms for binoculars, monoculars and
spotting scopes
Optique et photonique — Vocabulaire relatif aux systèmes
télescopiques —
Partie 2: Termes pour jumelles, monoculaires et lunettes
Reference number
©
ISO 2015
© ISO 2015, Published in Switzerland
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ii © ISO 2015 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
Bibliography . 6
Foreword
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The committee responsible for this document is ISO/TC 172, Optics and photonics, Subcommittee SC 4,
Telescopic systems.
This second edition cancels and replaces the first edition (ISO 14132‑2:2002), which has been technically
revised with the following changes:
a) the term “telescopic system” has been introduced replacing the term “telescope” where appropriate;
b) clearer distinction between “b — distance between centres of eyepieces”, “b’ — interpupillary
distance” and “B — distance between centres of objectives”, see 3.1.11 and 3.1.14;
c) the previous term “wide‑angle binocular” is now defined in ISO 14132-1 as “wide angle
telescopic system”;
d) a new term was added: “false pupils” (3.5).
ISO 14132 consists of the following parts, under the general title Optics and photonics — Vocabulary for
telescopic systems:
— Part 1: General terms and alphabetical indexes of terms in ISO 14132
— Part 2: Terms for binoculars, monoculars and spotting scopes
— Part 3: Terms for telescopic sights
— Part 4: Terms for astronomical telescopes
— Part 5: Terms for night vision devices
iv © ISO 2015 – All rights reserved

INTERNATIONAL STANDARD ISO 14132-2:2015(E)
Optics and photonics — Vocabulary for telescopic systems —
Part 2:
Terms for binoculars, monoculars and spotting scopes
1 Scope
This part of ISO 14132 gives terms, definitions and letter symbols used in relation with binoculars,
monoculars, and spotting scopes.
The alphabetical index of terms that are common for all published parts of ISO 14132 are published
in ISO 14132-1.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
binoculars
telescopic observational instrument that contains two telescopic systems and is designed as two
interlinked monocular telescopic systems having parallel optical axes
3.1.1
prism binoculars
binoculars with prism erecting systems
3.1.2
lens binoculars
binoculars with lens erecting systems
Note 1 to entry: Galilean binoculars are types of all‑lens binoculars (no prisms).
3.1.3
variable power binoculars
binoculars that provide a means of changing magnification
Note 1 to e
...