BS ISO 9039:2008

Foreword
Introduction
1 Scope
2 Terms and definitions
3 Classes of application
  3.1 Infinite object distance, finite image distance
  3.2 Infinite object distance, infinite image distance
  3.3 Finite object distance, finite image distance
  3.4 Finite object distance, infinite image distance
4 Test methods
  4.1 General
  4.2 Apparatus
5 Procedure
  5.1 Reference angle of the optical system to be tested
  5.2 Coordinate origin
  5.3 Selection of image heights
6 Evaluation
  6.1 Calculation of the reference quantities a, a', m or gamma
  6.2 Calculation of the distortion
7 Presentation of the results
8 Test report
Annex A (informative) - Example for a method of shifting the
        zero point
Annex B (informative) - Picture-height distortion value
Bibliography

Defines methods of determining distortion in optical systems for the purposes of quality evaluation.

This International Standard specifies methods of determining distortion in optical systems for the purposes of quality evaluation. It applies to optical imaging systems in the optical spectral range from 100nm to 15000nm which, by their design, aim at a rotationally symmetric image geometry. It is applicable to electro-optical imaging systems provided that adequate rotational symmetry of the image is guaranteed. It does not, therefore, apply to anamorphic and fibre optic systems.