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Lighting is an indispensable element of interior spaces and, with the simplest definition, it provides the level of light needed to make a function visible. Lighting is defined by the International Commission on Illumination (CIE) as "applying light to ensure that the environment and objects are seen as they are." The lighting technique, on the one hand, enables visual perception to be realized under the best conditions, but on the other hand it has to ensure that it is obtained with the most economical solution in terms of initial construction and operating expenses, and is also satisfactory in terms of human suitability and consequent aesthetic values and architectural harmony. As you can see, lighting technology is a concept which pursues aesthetics, psychology and economic gains. Lighting today; it has become a subject that aims to give priority to visual comfort, work efficiency and architectural features of volume and surfaces in architecture besides aiming to respond to the physiological needs of people first. Proper lighting is necessary not only for creating a positive psychological effect on the working person, but also for increasing the efficiency and preventing work accidents. Accident frequencies are rising in winter days when light is inadequate and in poorly illuminated workplaces. Due to the lack of lighting, particularly dark-colored subjects, the visual function is overloaded, and shortly thereafter, fatigue symptoms, visual disturbances and headaches occur.

Daylight is the most natural lighting. When employing daylight, the basic approach is to plan the distribution of this light equally across all processing areas. For this, it is known that the most appropriate lighting approach is the roof lighting. On the other hand, the light from the windows should be remembered to be a beneficial effect in a sense, from time to time, where the eyes of the outlooking workers are rested and their relations with the outside world are maintained. Reinforcing sunlight with sufficient artificial light increases the usable volume and areas in the plant, removes shadows and dark corners, and contributes to the optimization of the lighting level in factories where adequate daylight can not be provided due to orientation. Apart from that, it has other functions without illuminating natural daylight. They provide natural daylight, a view of the surrounding area, determine the time of day and provide an understanding of weather conditions.

Daylight illumination; the natural light of the day is illuminated within the hours of the day and the natural light is illuminated in the place to be illuminated by the maximum benefit from which the artificial lighting is contributing to the minimization of the energy consumption. Analyzes made in places where natural lightening is practiced with daylight clearly show the effects of natural lighting on people.