Topical survey on daylighting system

Abstract

Over ages science and technology has grown a lot. In day to day life new inventions and discoveries are made. Science and technology has reached into every sector of our life. From quite a few time there has been a need for the introduction of new technology, utilizing daylight in building and to monitor their performance for the benefit of those concerned with the building design practitioners lighting engineers, builders, product manufacturers, building owners and property managers. There are many different options and systems which serve many different purposes. Henceforth it is difficult to find the apt product. The overview and the description of the product help a lot to choose the desired daylighting system for the given conditions. In the present work theoretical design of holographic optical element has been done to filter out ultraviolet and unwanted portion of solar radiation and to allow only visible spectrum to enter inside the interior of the room. Such system provides even distribution of sunlight within the interior of the building which is hygienic and supportive to human health and activities as well as to reduce energy demands. To redirect the uniform daylight diffracted by the HOE into the remote interiors of a building, light pipes or optical fibres are quiet promising. For cost effectiveness, Plastic Optical Fibres (POFs) are used as wave guide for daylighting.