"Hybrid lighting systems are produced by a combination of four technologies: collecting natural light, generating artificial light, transporting and distributing light to where it is needed, and controlling the amounts of both natural and artificial light continuously during usage. For an example of a typical configuration, see the pictures below. Here, sunlight is collected on the roof of a commercial building, transported by optical fibers, monitored for intensity and spectrum, combined with artificial light, and released in preset amounts at specific locations. A description of these four technologies follows, along with an evaluation that weighs factors of cost and user friendliness. You will see that each technology has its own challenges."
