Abstract: A white light emitting device is composed of at least more than one blue light LED which can emit a blue light, at least more than one red light LED which can emit a red light, and an illuminator made by uniformly mixing a greenish yellow illumination material, a blue illumination material, and a transparent glue, wherein the illuminator can absorb the blue light, such that the illuminator will be excited to a first mixed light having a wavelength different than that of the blue light. The first mixed light is mixed with a red light emitted from the red light LED to release a second mixed light which is provided with a high rendering effect and saturation of color.

Abstract: A light emitting device including three light emitting sources and a phosphor, with the three light sources consisted of following light emitting diodes (LED) emitting lights having different wavelengths. Wherein, two light sources are used to excite the phosphor to produce a distinct wavelength different from those of the two light sources. The distinct wavelength is blended with portions of the two light sources and a light source from another independent light source, and a blended light is released to obtain a white light.

Abstract: A white light emitting device includes a device having at least one light emitting diode (LED) serving as a light source and being capable of emitting a light between blue and green in color; and a phosphor consisted of first and second phosphors each made of a compound from different materials. The phosphor is excited by the light from the light source to emit a first-color light and a second-color light, which are both blended with a portion of the light and altogether release to obtain a white light having enhanced color rendering effects, thereby offering the white light with illuminant contrast.

Abstract: A light emitting device includes at least three light emitting source and a phosphor, with the three light sources consisted of following light emitting diodes (LED) emitting lights having different wavelengths. Wherein, two light sources are used to excite the phosphor to produce a distinct wavelength different from those of the two light sources. The distinct wavelength is blended with portions of the two light sources and a light source from another independent light source, and a blended light is released to obtain a white light having an excellent color rendering index.

Abstract: A white light emitting device includes a photosemiconductor functioning as a light source of blue light, and a fluorescent layer encapsulated and connected to the photosemiconductor. The characteristics thereof are that the fluorescent layer is formed by mixing red and green fluorescent with transparent glue, wherein the red fluorescent emits light having a spectrum (wavelength) different from that of the blue light after being excited by the blue light, and the green fluorescent emits light having a spectrum (wavelength) different from that of the blue light after being excited by the blue light. White light is then formed by blending the two distinct spectra (wavelengths) with a portion of unexcited blue light.