back of the sun

As most areas of China are located in the north of the Tropic of Cancer, the problem of daylighting in north rooms is moreserious. So we to this problem is discussed and the design, we developed a newtype of lighting device, the device, by sunlightreceiver, diffuse, and double light barrier, the sun through the receiver into the slow fire, then sell design specific location isreflected to the north to the window in the whole, mounted whole plate shaped to facilitate hanging on, The plane is locatedat the edge of the recessed window of the room, which can improve the indoor light environment by emitting light at aspecificposition through diffuser.The material is translucent polycarbonate, and at the same time, the light screen is used toavoid glare.