Daylighting is the integration of natural light into a space through building facade, ceiling and that results in a reduction of electric lighting usage.
However successful daylight integration in the lighting design requires control of the direct sunlight to ensure comfort in daylit spaces and that may be
achieved through shading. Based on the location shading device may be categorized into three groups : Exterior shading - overhang, louvers or fins designed
based on window size, orientation; In window frame shading; Indoor shading and these devices may either be fixed or dynamic.Dynamic shading device like blinds
and light redirecting louvers can be adjusted based on the solar direction to allow or restrict daylight into internal spaces.