System for Inspecting Photovoltaic Modules

An inspection system, in particular a mobile inspection system, for outdoor inspection photovoltaic modules in situ, the inspection system comprising a movable detector unit and a processing unit;

• wherein the detector unit is configured to obtain, when positioned at a user-controllable position spaced apart from a photovoltaic module, luminescence data from a light-receiving surface of said photovoltaic module;
• the detector unit comprising:
• a light source, in particular a laser source, configured to emit an illumination beam;
• means for selectively directing the illumination beam onto respective portions of the light-receiving surface so as, when the illumination beam is directed onto a first portion of the light-receiving surface, to only illuminate the first portion while leaving a corresponding first remaining portion of the light-receiving surface unilluminated by the illumination beam and, when the illumination beam is directed onto a second portion of the light-receiving surface, to only illuminate the second portion while leaving a corresponding second remaining portion of the light-receiving surface unilluminated by the illumination beam;
• an imaging system configured to capture a plurality of images of the light-receiving surface, the plurality of images including a first image captured while only the first portion is illuminated by the illumination beam and depicting at least a part of the first illuminated portion and at least a part of the unilluminated first remaining portion, the plurality of images further including a second image captured while only the second portion is illuminated by the illumination beam and depicting at least a part of the second illuminated portion and at least a part of the unilluminated second remaining portion;
• wherein the processing unit is configured to process the plurality of images to provide reconstructed image data indicative of luminescence emitted by the light-receiving surface responsive to respective portions of the light-receiving surface being illuminated by the illumination beam.