An optical member includes: a phosphor layer including a phosphor that converts a wavelength of a portion of light from a light source which is incident on an incidence face; and a microlens array that causes the portion of light wavelength-converted by the phosphor layer and the other portion of light transmitted through the phosphor layer to emerge from an emission face, in which a diffractive lens array for diffracting the portion of light wavelength-converted and the other portion of light transmitted is provided on the emission face of the microlens array, and a pitch of the diffractive lens array is different for each of predetermined sections.