Most recent
DIN EN ISO 24502:2011
Ergonomics - Accessible design - Specification of age-related luminance contrast for coloured light (ISO 24502:2010); German version EN ISO 24502:2010
This international standard specifies 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 relative luminous efficiency of the eye.This basic international standard provides a method that can be applied to the design of visual signs and displays. It applies to visual environments in which the spectral radiance is known or measurable and viewed under the moderately bright light level called photopic vision. It does not apply to those which are seen under a dark environment called mesopic and/or scotopic vision.NOTE 1 This document specifies the luminance contrast for people from 10 yrs to 70 yrs of age who have had no medical treatment or surgery on their eyes throughout their life. For people younger than ten years old or older than 80 years old, this document may apply by estimating the age-related spectral luminous efficiency by extrapolation.NOTE 2 This document does not apply to visual signs and displays seen by people with colour defects who have different spectral luminous efficiency from people with normal colour vision.*Although the proportion of older people is increasing in many countries, the care for better visibility of signs and displays is not sufficiently taken for those older people. This prevents older people from actively being involved in social activities, as well makes it more difficult for them to be able to live their lives safely and comfortably. This International Standard provides a method of calculating age-related luminance contrast that can be used for assessing and designing signs and displays in our visual environment, so that they are clearly visible to older people. This method calculates age-related luminancecontrast for people aged from 10 to 79 years based on age-related photopic spectral luminous efficiency of the eye. This International Standard supplements the principles of accessible design given in ISO/IEC Guide 71. This International Standard specifies the 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. This International Standard provides a basic method of calculation that can be applied to the design of lighting, visual signs and displays. It applies to light, self-luminous or reflected, in visual signs and displays seen under moderately bright conditions called photopic vision/day vision and whose spectral radiance is known or measurable. It does not apply to light seen under darker conditions called mesopic (twilight) or scotopic (night) vision. This International Standard specifies the luminance contrast for people aged from 10 to 79 yearswho have had no medical treatment or surgery on their eyes that may affect their spectral luminous efficiency. This International Standard does not apply to visual signs and displays seen by people with colour defects whose spectral luminous efficiency is different from those with normal colour vision, nor those seen by people with low vision.
Content Provider
Deutsches Institut für Normung [din]
