A light tube is used for transporting natural or artificial light for illumination.
Light tube or light pipe may also refer to: Waveguide (optics), a device for light transport in photonic devices Fluorescent lamp, a tubular light-emitting device In professional wrestling, "light tube" refers to a fluorescent lamp used as a weapon in certain hardcore matches. LED tube lamps ADAT Lightpipe, a protocol for digital audio signals Krause-Ogle box, a waveguide (light pipe) used in nuclear testing
See also Solar chimney, a ventilation device