Abstract: A light apparatus is capable of emitting light of multiple wavelengths using a nanometer fluorescent material. The light apparatus comprises an initial light source that emits initial color light. The initial light source is covered with a transparent film member; and the inside or the surface of the film member, or the initial light source, is coated with at least one nanometer fluorescent material. The nanometer fluorescent material absorbs the initial color light and gets excited, and in the excitement it emits fluorescent light which is different from the initial color light. The initial color light and the fluorescent light combine to form light of multiple wavelengths, and the light of multiple wavelengths is emitted by the light apparatus. Besides, a combination of nanometer fluorescent materials of various particle sizes enables the emission of multiple-wavelength light of various dominant wavelengths.

Abstract: A color-adjustable light apparatus comprises a light device that emits initial light and a nanometer fluorescent material. The nanometer fluorescent material, which is made of at least one of sulfide and an activated sulfide, absorbs the initial light and emits fluorescence that is different from the initial light in terms of wavelength. The initial light and the fluorescent light combine to produce the required daylight or color light.