| dc.description.abstract | This paper is using optical software LightTools to building a optical phosphor model.First,using light distribution curve instrument and integrating sphere to measure luminous intensity distribution curve and spectrum of blue LED, following, establish red, green ,yellow three kinds of optical phosphor model;using laser diffraction submicron partical size analyzer measure partical size distribution of phosphor,then ,using photon spectra luminous meter measure excitation and emission spectra and other spectra parameters of these three kinds of phosphor respectively.And input following data to LightTools respectively : luminous intensity distribution curve and spectrum of blue LED ,partical size distribution,excitation and emission spectrum,using Monte-Carlo method to simulate ray tracing with Mie scattering theory, advanced calculate the behavior of absorption and radiation of phosphor .In simulation and experiment ,against blue LED inspiring red ,green phosphor in different concentration verify spectrum distribution,reach normalized correlation coefficient (NCC) above 0.9. Design blue LED inspiring yellow phosphor to conform white source ,in condition color temperature 4000K, comparing four kinds of different package model,analyze its phosphor quantity and luminous efficiency,and applied in downlight illumination analysis. | en_US |