Revolutionary changes discussed for lighting metrics: The Society of Light and Lighting staged a symposium on the topic in London.

摘要

On 15. July this year at University College London industry leading lighting professionals delivered presentations and engaged in debate on the subject of changes to lighting metrics. The Better Metrics for Better Lighting Symposium was hosted by the Society of Light and Lighting (SLL) and its journal "Lighting Research & Technology". Peter Raynham, University College London, opened the symposium by discussing why metrics are required in standards and how standards are developed in Europe. Today, the most common metrics used in lighting practice are illuminance on the horizontal working plane, daylight factor, colour rendering index and various power limits, but these all have defects.