A Thin Layer Inorganic Light Emitting device is disclosed comprising a substrate, a first electrode, a coated layer comprising substantially undoped zinc sulfide nanoparticles, and a second electrode. Application is to an AC loop or a circuit for an air conditioning system of a motor vehicle. The concave reflector is positioned adjacent to the light source to reflect light emitted by the light source toward the image forming device. The controller comprises a housing defining an inlet port connected to the source and an outlet port connected to the pressure operated device. Also, such a lens surfacing tool, a combination of such a pad attached to such a tool, and a lens surfacing machine having such a tool, or such a combination. In the fused part, an average ratio P of components originated from the noble metal member at points K1, L1, and M1 is equal to or greater than 80%, and an average ratio Q of components originated from the base portion at points K3, L3, and M3 is equal to or higher than 20%, and P+Q is equal to or higher than 160%.