Study and Analysis of Parameters for Daylighting System: A Review

Extra care is required to be taken in the architecture to provide daylight in high-rise deep plan buildings. The daylight is always beneficial in terms of cost saving and human health. Components of a daylight system become crucial to get the maximum possible benefit. Fresnel lenses are in use for quite some time as concentrator of light. Their high light concentrating capacity and less spherical aberration make them suitable for using as concentrator. Study of the optics and geometry of Fresnel lens is very important in order to understand their capability. The role of geometrical parameters like slope angle and draft angle is discussed in this paper. Study of optical fibers is also important as their length dependent transmission gives a fluctuating value of efficiency for daylighting system. Much work has been done in past on Fresnel lenses and their usage indaylighting system but still much more is to be explored.