Patent ID: 8409470

Claim:
A phosphor comprising an inorganic compound represented by the composition formula: M a A b D c E d X e wherein: M is one or two or more elements selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb; A is one or two or more elements selected from the group consisting of divalent metal elements other than M Element; D is one or two or more elements selected from the group consisting of tetravalent metal elements; E is one or two or more elements selected from the group consisting of trivalent metal elements; X is one or two or more elements selected from the group consisting of O, N, and F; a+b= 1; 0.00001 ≦a≦ 0.1; 0.5≦ c≦ 1.8; 0.5 ≦d≦ 1.8; 0.8×(2/3+4/3 ×c+d )≦ e; e≦ 1.2×(2/3+4/3 ×c+d ).