This European Standard defines basic terms and definitions for use in all lighting applications.This European Standard also sets out a framework for the specification of lighting requirements, giving details of aspects which have to be considered when setting those requirements.
EN 12665:2011 history
2018EN 12665:2018 Light and lighting - Basic terms and criteria for specifying lighting requirements
2011EN 12665:2011 Light and lighting - Basic terms and criteria for specifying lighting requirements
2002EN 12665:2002 Light and Lighting - Basic Terms and Criteria for Specifying Lighting Requirements