LIGHT COMFORT AND OPEN PUBLIC SPACE

Abstract

Natural and artificial light is necessary for human habitat. It is known that most of the day a person needs artificial light. And at this time the lighting must be adapted to the needs of the human eye. Artificial lighting should provide visual comfort. Visual comfort (light comfort) - this is the proposed lighting, the most adapted to human vision. This is the main task of the science of lighting. The task of optimizing artificial lighting is that it should be as close as possible to natural daylight. But it turns out that such a solution is not always true, and often has a negative sign. Natural lighting today is still not fully understood. The composition of daylight, the intensity mainly depends on the climate, the environment, the time of year and day. The man adapted to the natural light and to the light of the fire in the cave. In a person in the evening, the light of fire seems to be natural light, and in the afternoon the sun's light seems natural too. Lighting with the spectral composition of sunlight can cause an unpleasant feeling (discomfort) in the evening. The designer must take into account the physiology and psychology of the person. The quality of natural lighting is not possible to pass in the evening. Human activities require specific coverage. The task of the designer is to create lighting in an open and closed architectural environment. Comfortable light environment in designing largely depends on the choice of interior and exterior lighting architectural objects. Supplement to the annexes of the state building norms of Ukraine on lighting (the index of comfort C, visual comfort, criteria of the quality of natural light) is an actual task. Thus, the problem of creating a comfortable light environment in architecture is in the center of social attention, in the field of basic issues of ecology, architecture and urban planning. The purpose of the study is to determine the term of light comfort and calculate the indicator of comfort of the light environment.