Ergonomics. Accessible design. Specification of age-related luminance contrast for coloured light Ingestion-build-64721 BS EN ISO 24023-1:2020 supersedes

BS EN ISO 24023-1:2020 supersedes ISO 28981:1996

fitting or flange to regulate the flow of liquid or gas within a system

normally comprising a seal and a gland or a composite seal/gland device

Committees drafting other standards for structural design and related product

Ergonomics. Accessible design. Specification of age-related luminance contrast for coloured light Ingestion-build-64721 BS EN ISO 24023-1:2020 supersedes1 Scope 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