Suitable utilization of daylight in architecture, in addition to meeting the physical and emotional needs of human increase the quality of living spaces. From this perspective, our country's rich architecture has valuable achievements and experiences, which requires recognizing and introducing it to the architectural community of Iran and the world. The present research intends to examine the various qualities made at the back of light entrances using descriptive-analytical method, field observation and study on library documents and obtain the factors contributed in creation of these qualities and take step to reuse these ideas in modern architecture.