| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluorescent body capable of generating fluorescence at high light-emission intensity without containing an expensive and rare earth element, and to provide a fluorescent lamp using the fluorescent body, both at low cost. SOLUTION: The fluorescent body is represented by formula: M1<SB>x</SB>(Sn<SB>l-y</SB>Ti<SB>y</SB>)<SB>2</SB>M2<SB>z</SB>M3<SB>c</SB>O<SB>r</SB>(wherein M1 is either Ca or Na, M2 is either Al or Si, M3 is a transition element of any of Zr, Hf, Nb, and Ta, x is a number satisfying 1.5≤x≤2.5, y is a number satisfying 0.01<y<0.2, z is a number satisfying 1.5≤z≤2.5, r is a number satisfying 8≤x≤10, and c is a number satisfying 0≤c≤2). Further, the fluorescent lamp has a light transmission pipe, and an electrode for generating discharge and a fluorescent body layer inside the light transmission pipe. In the fluorescent lamp, mercury and a discharge medium are filled in the light transmission pipe. The fluorescent body layer contains the fluorescent body. COPYRIGHT: (C)2010,JPO&INPIT |
