Conventional blind is transpasparent to the light parallel to the louvers, while it blocks the light in other directions. The ”Fractal Blind” has properties opposite to the conventional blind; it blocks the light in a certain direction while it is (relatively) transparent to the light in other directions. The blind consists of some layers of small pieces of shades with fractal distributions. It can be used to block the direct sunlight but transmit scattered light. When it is used for a roof window, it can create a bright room with soft light.