BS ISO 14490-1:2005

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Method of measurement of the angular magnification
   4.1 General
   4.2 Test arrangement
   4.3 Procedure
   4.4 Determination of results
   4.5 Test report
5 Method of measurement of the entrance pupil diameter
   5.1 General
   5.2 Test arrangement
   5.3 Procedure
   5.4 Determination of results
   5.5 Test report
6 Method of measurement of the exit pupil diameter and
   eye relief
   6.1 General
   6.2 Test arrangement
   6.3 Procedure
   6.4 Determination of results
   6.5 Test report
7 Method of measurement of the angular field of view in
   the object space
   7.1 General
   7.2 Test arrangement
   7.3 Procedure
   7.4 Determination of results
   7.5 Test report
8 Method of measurement of the angular field of view in
   the image space
   8.1 General
   8.2 Test arrangement
   8.3 Procedure
   8.4 Determination of results
   8.5 Test report
9 Method of measurement of the angular field of view in
   the object space for spectacle wearers
   9.1 General
   9.2 Test arrangement
   9.3 Procedure
   9.4 Determination of results
   9.5 Test report
10 Method of measurement of the collimation of rays
   emergent from the eyepiece
   10.1 General
   10.2 Test arrangement
   10.3 Procedure
   10.4 Determination of results
   10.5 Test report
11 Method of measurement of the image rotation
   11.1 General
   11.2 Test arrangement
   11.3 Procedure
   11.4 Determination of results
   11.5 Test report
12 Method of determination of the closest distance
   of observation
   12.1 General
   12.2 Test arrangement
   12.3 Procedure
   12.4 Determination of results
   12.5 Test report
13 General test report

Describes the test methods for the determination of the following basic characteristics of telescopic systems and observational telescopic instruments: - angular magnification; - entrance pupil diameter; - exit pupil diameter and eye relief; - angular field of view in the object space; - angular field of view in the image space; - angular field of view in the object space for spectacle wearers; - collimation of the bundle of rays emergent from the eyepiece; - image rotation; - closest distance of observation.

This part of ISO14490 specifies the test methods for the determination of the following basic characteristics of telescopic systems and observational telescopic instruments:

• angular magnification (see Clause4);

• entrance pupil diameter (see Clause5);

• exit pupil diameter and eye relief (see Clause6);

• angular field of view in the object space (see Clause7);

• angular field of view in the image space (see Clause8);

• angular field of view in the object space for spectacle wearers (see Clause9);

• collimation of the bundle of rays emergent from the eyepiece (see Clause10);

• image rotation (see Clause11);

• closest distance of observation (see Clause12).