公开(公告)号：US20200068682A1

公开(公告)日：2020-02-27

申请号：US16604592

申请日：2018-04-04

Applicant: OSRAM GmbH

Inventor： Mourad BOULOUEDNINE ,  Ulrich BINDER ,  Michael STEYER

IPC: H05B33/08 ,  H05B37/02 ,  G01J3/46 ,  G01J5/60 ,  G09F19/20

Abstract: A method may include supplying electric power to a first light source and a second light source of at least two light sources by at least one ballast so that the first light source and the second light source emit a first source light and a second source light with a first and second spectral light distribution, respectively. The method further includes superimposing the first and second source light using an optical unit such that the lighting device outputs light with a spectral superposition light distribution. The method further includes detecting the light outputted from the lighting device using a light distribution sensor that provides a sensor signal corresponding to a spectral light distribution of the detected light. The method further includes comparing the sensor signal to a predefined spectral light distribution and adjusting the electric power supplied to the respective light source by the ballast based on the comparison.