In modern living spaces, special emphasis is paid on lighting sources, which used to come last to consider. Right use of light in the right places is crucial. After all, we have access to so many varieties of lighting nowadays. The endless selection of lighting includes concealed lights in household or office ceilings, lamps integrated in furniture legs or desktops, those that focus on kitchen counters or picture frames, reading lamps, even systems... Lighting is an integral element of decoration, and a seperate field of design at the same time. There are lighting systems designed for indoor and outdoor areas, and multifunctional systems considering the impacts of light on psychology. At the same time, it is psychological for its impact on the ambiance, and esthetical for its creative design. Lighting elements are an integral part of interior design, and carry the responsibility of designing ambiance. The size of the house, the ceiling height, the selection of furniture and their positings are all important in determining the correct lighting element. These are all related with function. In the meantime, there are the esthetic preferences, life habits and needs of the household members. All of these matter in determining the style of ligthing.