Inspection system for inspecting a lighting device during an assembly process of the lighting device and a method thereof

Abstract

An inspection system () for inspecting a lighting device () during an assembly process of the lighting device; wherein the lighting device comprises a base plate () and a plurality of components () mounted on the base plate; wherein the inspection system comprises: a light source () arranged for illuminating the lighting device according to a first light output spectrum for providing a luminance contrast between the base plate and the plurality of components; an imaging unit/camera () arranged for capturing a first image of the illuminated lighting device; a controller () comprising a processing unit for determining a luminance contrast measure of the captured first image; wherein the processing unit is further arranged for, when the luminance contrast measure of the captured first image exceeds a threshold value, adapting the first light output spectrum, and wherein the imaging unit is further arranged for capturing a second image of the lighting device illuminated according to the adapted first light output spectrum; and wherein the controller further comprises: a comparing unit arranged for comparing the second image with a reference image; a determination unit arranged for determining a defect in the base plate and/or in the plurality of components based on the comparison.