The phosphor and a light emitting device

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A light emitting device includes a light emitting element 1 that has a light emission peak wavelength in a range from 300 nm to 530 nm, and a phosphor 2 that absorbs light from the light emitting element 1 and converts the wavelength of the light to emit light with a light emission peak wavelength different from the light emitting element. The phosphor is represented by the general formula M 1 5-x Eu x M 2 m M 3 n O 2m+(3/2)n+5 where x, m and n fall within ranges 0.0001 < x ‰ 0.3, 1.0 ‰ m < 2.5 and 0 < n < 2.5, M 1 is at least one element selected from the group consisting of Mg, Ca, Sr, Ba and Zn, M 2 is at least one element selected from the group consisting of Si, Ge and Sn, and M 3 is at least one element selected from the group consisting of B, Al, Ga, In and rare earth elements.