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BS ISO 14490-3:2021

BS ISO 14490-3:2021

$142.49

Optics and photonics. Test methods for telescopic systems – Test methods for telescopic sights

Published By Publication Date Number of Pages
BSI 2021 26
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This document specifies test equipment and test procedures for determination of the following optical characteristics of telescopic sights:

  1. axial parallax;

  2. parallax;

  3. eye relief range, eye relief, critical eye relief;

  4. reticle tracking;

  5. line of sight shift due to zooming;

  6. line of sight shift due to focusing.

PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
9 1 Scope
2 Normative references
3 Terms and definitions
4 Method of measurement of axial parallax
4.1 Principle
10 4.2 Test arrangement
4.2.1 General
4.2.2 Collimator
4.2.3 Telescopic sight
11 4.2.4 Dioptric tester
4.3 Measurement procedure
4.4 Test report
5 Method of measurement of parallax
5.1 Principle
12 5.2 Test arrangement
5.2.1 General
5.2.2 Collimator
5.2.3 Telescopic sight
5.2.4 Light stop
13 5.2.5 Auxiliary telescope
5.3 Measurement procedure
14 5.4 Test report
6 Method of measurement of eye relief range, eye relief and critical eye relief
6.1 Principle
6.2 Test arrangement
6.2.1 General
6.2.2 Collimator
6.2.3 Telescopic sight
15 6.2.4 Measuring magnifier
6.3 Measurement procedure
16 6.4 Test report
7 Method of measurement of reticle tracking
7.1 Principle
7.2 Test arrangement
7.2.1 General
7.2.2 Collimator
17 7.3 Test procedure
7.4 Test report
8 Method of measurement of line of sight shift due to zooming
8.1 Principle
8.2 Test arrangement
8.2.1 General
19 8.2.2 Test specimen mounting
8.2.3 Auxiliary telescope
8.3 Test procedure
8.3.1 Preparation of the test assembly
8.3.2 Determination of the measurement values
20 8.4 Precision of the measurement
8.5 Test report
9 Method of measurement of line of sight shift due to focusing
9.1 Principle
9.2 Test arrangement
9.2.1 General
21 9.2.2 Collimator
22 9.2.3 Telescopic sight
9.2.4 Auxiliary telescope
9.3 Test procedure
9.3.1 Preparation of the test assembly
9.3.2 Determination of the measurement values
9.4 Precision of the measurement
9.5 Test report
23 10 General test report
24 Bibliography

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BS ISO 14490-3:2021
$142.49