Lighting system that maintains melanopic lux levels at the eye regardless of distance to user

Abstract

The invention provides a lighting system (1000) comprising:—a lighting device (100) configured to provide light (101);—a sensor (150) configured to sense a user-related parameter selected from one or more of (a) a distance parameter (d) between the lighting device (100) and a user (1) and (b) an eye-activity parameter of the eye (2) of the user (1); and—a control system (200) is configured to control one or more lighting properties selected from a spectral power distribution of the light (101) and a light intensity I of the light (101) as function of the user-related parameter.

Dependencies are inferred from the claim text.