Illuminating device of white light surface light source

The utility model relates to a light-emitting device for a white light source, which comprises a semiconductor chip and a base, a cavity is formed in a lens and is filled with light-converting material, and the lens is fixed above the semiconductor chip and is separated from the semiconductor chip. Because the lens with light-converting material is adopted, the utility model can effectively solve excitation wavelength shift, quantum efficiency reduction, ageing and other adverse effects caused by the heating of the semiconductor chip to the light-converting material; the light-emitting rate, color temperature, chroma and consistency of the fabricated light-emitting device of the white light source can also be improved effectively; the luminous surface and uniformity of the light source is enlarged and the emitted light is a white light source and can effectively avoid glaring phenomenon.