Keywords: Light tube daylighting system.png en Schematic of a light tube daylighting system The schematic is simplified and was based on an image in the book How things work today by Michael Wright Mukul Patel the top device to harness the light is a Cassegrain parabolic reflector Further components Blue mirrors Grey tubes; inside is coated with reflecting material Used image http //upload wikimedia org/wikipedia/commons/c/c8/AntenaCassegrain JPG own KVDP 2011-03-13 Cc-zero Tubular daylighting devices |