A method performed by a server device includes receiving a request from a client, the request including data to identify a component of a graphical user interface application; and determining that an updated version of the component is available. The fan housing in which the fan motor is arranged has fixed air-channeling elements which are arranged in the region of a fan hub of the fan wheel driven by the fan motor and which only partially cover an outlet cross section defined by the fan housing. The luminance distribution-analyzing unit searches a luminance distribution management database for a region, which has a luminance distribution similar to the region of interest and is easily extracted, as a similar area.