Led Used In Lighting Research And Design

This thesis is the discussion and research about the calculation and design of illumination based on LED sources.The design of LED illumination plays an important role in its prevalence and the complet realization of green illumination.Based on the introduction of the characteristics of LED illumination and the measurement of optical parameters of LED,many kinds of illumination softwares are summarized systematically and the related calculation methods are programmed,in which,the process of illumination design,the principles of optical design and how to use the software ASAP are discussed in particular.A method of computer simulation to the design of LED illuminaton which combines the illumination software with the program of arithmetic is presented.This method is a pre-estimating one,it can judge whether the optical characteristics suit the illumination standards or not before the illumination devices are produced,so on the one hand,it cuts down the manpower and material resources,on the other hand,it not only reduces the period of design and manufacture but also enhances the economic benefits.At last,the practical design is discussed in the pater.It includs two aspects:the design of encapsulation shape of LED which means the design of geometrical shape,the fabrication and the analytical process of epoxy lens with different half angle,the other aspect is about the systematic design in which the LEDs are used as sources,furthermore,some kinds of LED illumination deveces are illustrated which consists of the process of design and the compare with the results of actual measurement.