The Philips CitySpirit Post top is a range of unobtrusive luminaires. Because every application deserves to be illuminated adequately, several new optical concepts were created which address issues like spacing, night effect comfort and light trespass and are suitable for any application. Transparent materials have been used to lighten the daytime appearance. The inner components, pole mounts and covers are made of aluminium to ensure they are sufficiently robust. The design is unique because of the transparent outside skin, which gives the product a light character. The skin also gives a nice lighting effect at night.