Semiconductor optical device

摘要

A semiconductor optical device includes a stem; a semiconductor optical element mounted on the stem; a resin cap including a cylindrical body portion, a plate portion, and an edge portion; and a lens attached integrally to the plate portion of the cap. The edge portion of the cap is bonded to the stem so that the cap covers the semiconductor optical element. The cylindrical body portion of the cap has at least one first portion and second portions which are spaced apart from each other in the circumferential direction of the cylindrical body portion and which project inwardly relative to the at least one first portion. The stem has projections, and each projection vertically underlies and engages or contacts a surface of a respective one of the second portions of the cap.

主权项

1. A semiconductor optical device comprising:
a stem having a top surface; a semiconductor optical element secured to the top surface of the stem; a resin cap including
a cylindrical body portion having a central axis, an inside side wall surface generally parallel and circumferential to the central axis, and an outside side wall surface generally parallel and circumferential to the central axis, wherein the inside and outside side wall surfaces extend along an entire circumference of the cylindrical body portion,a plate portion disposed at a first end of the cylindrical body portion, andan edge portion disposed at a second end of the cylindrical body portion, wherein the inside and outside side wall surfaces extend from the plate portion to the edge portion of the cylindrical body portion, and the edge portion has a lower surface bonded to the stem so that the resin cap covers the semiconductor optical element; and a lens attached integrally to the plate portion of the cap, wherein
the cylindrical body portion has a plurality of first and second portions alternatingly arranged in a circumferential direction of the cylindrical body portion,the second portions project radially inwardly, at the inside side wall surface, toward the central axis, relative to the first portions,each of the second portions has a first engagement feature at the edge portion of the resin cap,the stem has a plurality of second engagement features at the top surface of the stem, andeach second engagement featured underlies and engages or contacts the first engagement feature of a respective one of the second portions.