الگوی نورپردازی طبیعی در گنبدخانه‌های مساجد تاریخی اصفهان

Daylight historic spaces were the only source of lighting supplier and traditional architects to artistic style as a tool to increase the visual quality of space and concepts used. The light is considered to be integral elements of space and Iranian architectural pattern should also be followed. Lighting pattern of Natural light and provide criteria main research question is historic mosques. This article is to discover the laws governing the lighting of the building and the windows in natural light distribution pattern in the dome By examining the five-dome mosques of Isfahan (Emam mosque, Sheikh lotfollah mosque, Hakim mosque of the Safavid period and Seyyed mosque and Rahim khan mosque of the Ghajariyeh period) Tries to extract pattern designed lighting Traditional architects And solutions to contemporary mosque architects was designed to provide natural lighting. Data collection style is field and library. This study photometry instruments, field data at three times the length of the day is taken and then Radiance software was extended to one year. According to the criteria presented in the books of lighting standards, brightness, uniformity, light distribution and visual quality of the plan and the observer on the surface were analysed. In addition Time lapse photography to study the movement of light in space from sunrise to sunset as observers from the Field measurements Obtained. Manifestation of the spiritual aspects of light can be seen in the architecture of mosques prominent Islamic monuments. So not only the most important and most prominent mosque of Islam, but Islamic architecture is the key to understanding. In mosques to create a spiritual atmosphere of light as something beyond the material has been used and to guide it better indoors, methods and various techniques have been proposed that this has been made possible by designing the windows. How light distribution, light direction and angle, brightness and glare light the way for quality properties are in space. If the quality of the space light with uniform light distribution pattern is no glare and brightness the direction and angle of the light, was significant and could lead to direct worship activities, design elements windows are designed to create a spiritual atmosphere. Field observations, simulations and photography time lapse all agree on the accuracy of a comment. On Time lapse photography in field study day, light Direction in the sunrise from altar started and by moving on the west wall of altar, goes toward the floor. Stains of light in space until around 10 am to the end And then uniform illumination without light spots flows in space Then, at about 3.5 pm stains slowly began to emerge in the middle of the dome home And approaching the sunset, Moving them from the floor started And to the east wall and Grive are to be continued. There is no stain in Hakim Mosque due to lack of windows in Grive But the other four mosques as is apparent. Natural light distribution pattern, the distribution, direction and angle of the light in mosques other than Sheikh lotfollah mosque has a lot of similarities. Although the mosques mentioned in terms of dimensions, space proportions and geometry of windows are different But lighting¢s are very similar. If the observer in the dome home sit for hours fixed in position, through the direction light (sunrise to sunset) in the space noticed the passage of time and the approximate time of day. In all the mosques, if someone sunrise at dome to sit expected, the first light stains on altar or near it to attract his attention. Movement of light in all five mosques are the same. In the gaze of the viewer of the altar, the altar of the entire space in the entire day seems brighter. Although the plan for software simulation, light intensity at the beginning of the arrival of more show floor But from a visual point of view, the altar brighter. Of course this pattern in the Sheikh Lotfollah Mosque due to differences in the way in to space is somewhat different. Altar in the plan and the visual appearance is brighter than the entire space. Brightness reaches sixty lux but the average brightness of one hundred to three hundred lux varies between four mosques. Despite the differences in the historical period architectural features of mosques and the domes, but they warrant the same lighting pattern. Iranian architecture, despite the complexity and diversity of the immense space of a few uses spatial patterns. In fact, the pattern can lead to mixed results in its products. Lighting contemporary mosques, free from dependency on artificial lighting, natural light also does not have a meaningful pattern. Although the pattern does not dam architectural creativity in creating new spaces and its formation, is inherently creative process But the meaning of creativity in contemporary architectural culture has changed.