WAVELENGTH CONVERTING MEMBER

Provided is a wavelength converting member (11) made of a sintered body (1) which inhibits color unevenness of exit light after wavelength conversion and has excellent light emitting efficiency and inhibited decrease in mechanical strength. The wavelength converting member (11) includes a plate-like sintered body (1) having one principal surface as a light entrance surface (2) and the other principal surface as a light exit surface (3), and a porosity of 0.1% or less with fluorescent material grains containing an activator and light-transmitting material grains, the entrance surface (2) and the exit surface (3) are sintered surfaces in which the fluorescent material grains and light- transmitting material grains are exposed without processing. The sintered surface has an average roughness Ra of 0.1 ?m to 0.5 ?m, the fluorescent material grains exposed on a surface have an average roughness Ral of 0.2 nm to 0.5 nm, and the light- transmitting material grains exposed on a surface have an average roughness Ra2 of 0.3 nm to 0.7 nm.