ISO 14490-3:2021
(Main)Optics and photonics — Test methods for telescopic systems — Part 3: Test methods for telescopic sights
Optics and photonics — Test methods for telescopic systems — Part 3: Test methods for telescopic sights
This document specifies test equipment and test procedures for determination of the following optical characteristics of telescopic sights: — axial parallax; — parallax; — eye relief range, eye relief, critical eye relief; — reticle tracking; — line of sight shift due to zooming; — line of sight shift due to focusing.
Optique et photonique — Méthodes d'essai pour systèmes télescopiques — Partie 3: Méthodes d'essai pour viseurs de tir
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 14490-3
Third edition
2021-03
Optics and photonics — Test methods
for telescopic systems —
Part 3:
Test methods for telescopic sights
Optique et photonique — Méthodes d'essai pour systèmes
télescopiques —
Partie 3: Méthodes d'essai pour viseurs de tir
Reference number
©
ISO 2021
© ISO 2021
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ii © ISO 2021 – All rights reserved
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Method of measurement of axial parallax . 1
4.1 Principle . 1
4.2 Test arrangement . 2
4.2.1 General. 2
4.2.2 Collimator . 2
4.2.3 Telescopic sight . 2
4.2.4 Dioptric tester . 3
4.3 Measurement procedure . 3
4.4 Test report . 3
5 Method of measurement of parallax . 3
5.1 Principle . 3
5.2 Test arrangement . 4
5.2.1 General. 4
5.2.2 Collimator . 4
5.2.3 Telescopic sight . 4
5.2.4 Light stop . 4
5.2.5 Auxiliary telescope . 5
5.3 Measurement procedure . 5
5.4 Test report . 6
6 Method of measurement of eye relief range, eye relief and critical eye relief.6
6.1 Principle . 6
6.2 Test arrangement . 6
6.2.1 General. 6
6.2.2 Collimator . 6
6.2.3 Telescopic sight . 6
6.2.4 Measuring magnifier . 7
6.3 Measurement procedure . 7
6.4 Test report . 8
7 Method of measurement of reticle tracking . 8
7.1 Principle . 8
7.2 Test arrangement . 8
7.2.1 General. 8
7.2.2 Collimator . 8
7.3 Test procedure . 9
7.4 Test report . 9
8 Method of measurement of line of sight shift due to zooming . 9
8.1 Principle . 9
8.2 Test arrangement . 9
8.2.1 General. 9
8.2.2 Test specimen mounting .11
8.2.3 Auxiliary telescope .11
8.3 Test procedure .11
8.3.1 Preparation of the test assembly .11
8.3.2 Determination of the measurement values .11
8.4 Precision of the measurement .12
8.5 Test report .12
9 Method of measurement of line of sight shift due to focusing .12
9.1 Principle .12
9.2 Test arrangement .12
9.2.1 General.12
9.2.2 Collimator .13
9.2.3 Telescopic sight .14
9.2.4 Auxiliary telescope .14
9.3 Test procedure .14
9.3.1 Preparation of the test assembly .14
9.3.2 Determination of the measurement values .14
9.4 Precision of the measurement .14
9.5 Test report .14
10 General test report .15
Bibliography .16
iv © ISO 2021 – All rights reserved
Foreword
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electrotechnical standardization.
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patent rights. ISO shall not be held responsible for identifyi
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