Light emission device

A light emission device comprising:

• a plurality of semiconductor light-emitting elements;
• an optical element configured to collimate light emitted from each of the plurality of semiconductor light-emitting elements and output a plurality of collimated beams;
• a converging portion having an aspheric surface configured to converge the plurality of collimated beams;
• and
• a wavelength-converting portion comprising a transmissive region, and a reflective region that surrounds the transmissive region, the transmissive region including a light-incident surface at which the plurality of collimated beams that have been converged by the converging portion enter, wherein the transmissive region includes a phosphor adapted to be excited by the plurality of collimated beams that have been converged by the converging portion;
• wherein:
• the light-incident surface of the transmissive region has a rectangular shape;
• the converging portion is shaped such that:
• the plurality of collimated beams that have been converged by the converging portion comprises:
• at least one pair of outer collimated beams radiated toward corners of the light-incident surface, and
• one or more inner collimated beams interposed between the outer collimated beams, and
• the outer collimated beams are more diverged than the one or more inner collimated beams.