Light emitting/receiving element for optical pickup apparatus

摘要

A flat plate section 2a and a protruded section 2b are formed in a metallic radiator plate 2, a first semiconductor substrate 4 with a light receptor 3 mounted thereon is disposed on the flat plate section 2a of the metallic radiator plate 2, and a second semiconductor substrate 7 with a laser diode 5 and a monitoring light receptor 6 mounted thereon is disposed on the protruded section 2b of the metallic radiator plate 2.