| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light emitting device which is capable of efficiently emitting red light of high brightness responding to the stimulation light having wavelengths of 350 to 420 nm, emitting a wide range of red light, excellent in color rendering, and capable of displaying a delicate tone more precisely with high reproducibility when the device is used together with a green light emitting fluorescent material and a blue light emitting fluorescent material, to enable a fluorescent material to emit white light or neutral colors as it receives the light emitted from a semiconductor light emitting element which emits the light having the above wavelengths. <P>SOLUTION: The light emitting device is equipped with a semiconductor light emitting element which is sealed in a sealing body and emits light having wavelengths of 350 to 420 nm. A red light emitting fluorescent material where tetravalent Mn serves as luminous ions and another red light emitting fluorescent material where trivalent Eu serves as luminous ions are dispersed into the sealing body. Furthermore, a fluorescent layer contains a red light emitting fluorescent material where tetravalent Mn serves as luminous ions, and another red light emitting fluorescent material where trivalent Eu serves as luminous ions, and is provided on the optical path of light emitted from the above semiconductor light emitting element. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
