Patent ID: 7022260

Claim:
A fluorescent member comprising a plurality of particles dispersed in a medium, wherein each of said particle includes at least one core and a coating layer covering the at least one core, said at least one core has a diameter of between 5 nm and 100 nm and is formed of a semiconductor for absorbing excitation light and emitting light having a wavelength different from a wavelength of the excitation light, said at least one core formed of a semiconductor selected from In x Ga y Al 1−x−y N (0≦x≦1, 0≦y≦1, x+y≦1), and Zn x Mg y Cd 1−x−y Se v S 1−v (0≦x≦1, 0≦y≦1, x+y≦1, 0≦v≦1); and said particle has a particle size for causing Mie scattering with respect to said excitation light, wherein each of said particles includes a plurality of cores for emitting light of the same wavelength and said coating layer covering the cores.