LIGHT EMITTING DEVICE WITH WAVELENGTH TUNING FUNCTION

摘要

The purpose of the present invention is to provide a light emitting device, wherein a wavelength conversion part can be replaced freely by configuring a coupling part so that the wavelength conversion part can be separated from or combined with a light source part, and accordingly the wavelength of light output from the light source part can be converted more easily. For the purpose, the present invention comprises: the light source part for outputting light with an arbitrary wavelength; the coupling part formed on the light source part; a wavelength conversion part configured to be able to be replaced by sliding combination or inserting combination with the coupling part and composed of a fluorescent substance to convert the wavelength of the light outputted from the light source part depending on the replacement; and a diffusion plate installed on one side surface of the wavelength conversion part to be able to be replaced and uniformly dispersing the light, which is emitted from the light source part, in an arbitrary direction, wherein the diffusion plate contains the fluorescent substance so that the range of the wavelength can be expanded by replacing either or both of the wavelength conversion part and the diffusion plate. Therefore, the light emitting device according to the present invention has the coupling part configured so that the wavelength conversion part can be separated from or combined with the light source part. Accordingly, the wavelength conversion part can be replaced more freely and the wavelength of the light outputted from the light source part can be converted more easily. Also, a production process for converting a wavelength can be simplified, the volume of a structure can be reduced and production costs can be lowered via the configuration of separately making the wavelength conversion part of the fluorescent substance and the diffusion plate containing the fluorescent substance.