PREN ISO 24502 : DRAFT 2009

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Age-related luminance contrast
5 Assessment of contrast using age-related luminance contrast
Annex A (informative) - An example of calculation of
        age-related luminance contrast
  A.1 Purpose
  A.2 An example of calculation
  A.3 Practical examples for application of age-related
      luminance contrast
Annex B (informative) - Spectral luminous efficiency function
        and difference between luminance and brightness
  B.1 Purpose
  B.2 Two different types of luminous efficiency function
  B.3 Application
Bibliography

Defines age-related luminance contrast of any two lights of different colour seen by a person at any age by taking into account the age-related change of spectral luminous efficiency of the eye.