Lighting system to be used in an aircraft cabin, comprising: a plurality of light units placeable at a plurality of locations within the aircraft cabin, wherein each of the plurality of light units comprises at least one infrared light source configured, when the lighting system is placed in the aircraft cabin, to emit infrared light across the aircraft cabin resulting from an operation of the at least one infrared light source of the plurality of light units, wherein each of the plurality of light units further comprises at least one visible light source and at least one UV light source; a control unit coupled to the plurality of light units, the control unit configured, when the lighting system is placed in the aircraft cabin, to provide a selective illumination of the aircraft cabin with infrared light and/or UV light by putting the at least one infrared light source and/or the at least one UV light source of a subset of the plurality of light units into an on state; an infrared camera configured, when the lighting system is placed in the aircraft cabin, to take photos and/or videos of the aircraft cabin in the absence of visible light; and a plurality of indirect illumination regions placeable at various second locations within the aircraft cabin, with each of the indirect illumination regions comprising a photo luminescent substance for emitting visible light pursuant to being charged by the at least one UV light source of the plurality of light units; wherein the lighting system is configured to operate in any of a first, a second, and a third operating mode, wherein, in the first operating mode, the plurality of light units are configured to emit visible light for illuminating the aircraft cabin, wherein, in the second operating mode, the plurality of light units are configured to emit UV light into the aircraft cabin, with the plurality of indirect illumination regions, pursuant to receiving the UV light, being configured to emit visible light, and wherein, in the third operating mode, the plurality of light units are configured to emit infrared light across the aircraft cabin and to operate the infrared camera to take photos and/or videos of the aircraft cabin. a plurality of light units placeable at a plurality of locations within the aircraft cabin, wherein each of the plurality of light units comprises at least one infrared light source configured, when the lighting system is placed in the aircraft cabin, to emit infrared light across the aircraft cabin resulting from an operation of the at least one infrared light source of the plurality of light units, wherein each of the plurality of light units further comprises at least one visible light source and at least one UV light source; wherein each of the plurality of light units comprises at least one infrared light source configured, when the lighting system is placed in the aircraft cabin, to emit infrared light across the aircraft cabin resulting from an operation of the at least one infrared light source of the plurality of light units, wherein each of the plurality of light units further comprises at least one visible light source and at least one UV light source; a control unit coupled to the plurality of light units, the control unit configured, when the lighting system is placed in the aircraft cabin, to provide a selective illumination of the aircraft cabin with infrared light and/or UV light by putting the at least one infrared light source and/or the at least one UV light source of a subset of the plurality of light units into an on state; an infrared camera configured, when the lighting system is placed in the aircraft cabin, to take photos and/or videos of the aircraft cabin in the absence of visible light; and a plurality of indirect illumination regions placeable at various second locations within the aircraft cabin, with each of the indirect illumination regions comprising a photo luminescent substance for emitting visible light pursuant to being charged by the at least one UV light source of the plurality of light units; wherein the lighting system is configured to operate in any of a first, a second, and a third operating mode, wherein, in the first operating mode, the plurality of light units are configured to emit visible light for illuminating the aircraft cabin, wherein, in the second operating mode, the plurality of light units are configured to emit UV light into the aircraft cabin, with the plurality of indirect illumination regions, pursuant to receiving the UV light, being configured to emit visible light, and wherein, in the third operating mode, the plurality of light units are configured to emit infrared light across the aircraft cabin and to operate the infrared camera to take photos and/or videos of the aircraft cabin.