Optical transmission module

Patent metadata

Field	Value
Publication number	US-9389376-B2
Application number	US-201514705372-A
Country	US
Kind code	B2
Filing date	May 6, 2015
Priority date	May 23, 2014
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

An optical transmission module includes a first member having a bottom portion, sidewalls and an opening, a second member joined to a sidewall end surface of the first member and sealing the opening, a connector member attachable to and detachable from the second member, a light-emitting element mounted on an inner surface of the second member, an interconnection formed on the inner surface and extending inside and outside the first member across the sidewalls of the first member, and electrodes formed on outer surfaces of the sidewalls. The second member transmits therethrough light outputted from the light-emitting element. One end portion of the electrode is electrically connected to one end portion of the interconnection extending outside the first member. The other end of the electrode is soldered to an interconnection formed on a substrate surface on which the optical transmission module is mounted.

First claim

What is claimed is:

1. An optical transmission module including an optical element with a photoelectric conversion function, the optical transmission module comprising:
a first member having a bottom portion and sidewalls, and one surface with an opening;
a second member joined to each end surface of the sidewalls of the first member and sealing the opening of the first member;
a connector member, which is attachable to and detachable from the second member, having an optical interconnection connected thereto;
the optical element mounted on an inner surface of the second member that faces an inner surface of the bottom portion of the first member;
interconnections formed on the inner surface of the second member and extending inside and outside the first member across the sidewalls of the first member; and
electrodes formed on outer surfaces of the sidewalls of the first member,
wherein the second member transmits therethrough at least one of light outputted from the optical element and light to be incident on the optical element,
the connector member converts a traveling direction of light transmitted through the second member to make the light incident on the connected optical interconnection, or converts a traveling direction of light outputted from the connected optical interconnection to make the light incident on the second member,
first end portions of the electrodes are electrically connected to end portions of corresponding interconnections extending outside the first member, and
second end portions of the electrodes are soldered to interconnections or electrodes formed on a mounting surface on which the optical transmission module is mounted.

2. The optical transmission module according to claim 1 , comprising a plurality of engaging units for defining a relative positional relationship between the second member and the connector member.

3. The optical transmission module according to claim 2 ,
wherein the connector member is mounted on an outer surface of the second member on a side opposite to the inner surface of the second member,
the optical transmission module further includes:
a first engaging unit for defining a relative positional relationship between the second member and the connector member in an X direction that is parallel to the outer surface of the second member;
a second engaging unit for defining a relative positional relationship between the second member and the connector member in a Y direction that is parallel to the outer surface of the second member and orthogonal to the X direction; and
a third engaging unit for defining a relative positional relationship between the second member and the connector member in a Z direction that is perpendicular to the outer surface of the second member.

4. The optical transmission module according to claim 3 ,
wherein each of the first engaging unit and the second engaging unit includes a concave and a convex formed respectively on the outer surface of the second member and on a bottom surface of the connector member facing the outer surface, and
the third engaging unit is formed integrally with the connector member, and includes a claw that is engageable with and releasable from the second member.

5. The optical transmission module according to claim 4 ,
wherein each of the first engaging unit and the second engaging unit includes a groove that is formed on the outer surface of the second member, and a protrusion that is formed on the bottom surface of the connector member and fitted with the groove, and
the claw included in the third engaging unit is elastically deformable to be into a state of being engaged with the second member and a state of being released from engagement with the second member.

6. The optical transmission module according to claim 3 ,
wherein each of the first engaging unit and the second engaging unit includes a concave and a convex formed respectively on the outer surface of the second member, and a bottom surface of the connector member facing the outer surface, and
the third engaging unit includes a fixture which is provided across the second member and the connector member, and separated from the connector member.

Assignees

• Hitachi Metals Ltd

Inventors

• Sunaga Yoshinori
• Yamazaki Kinya
• Hirano Koki
• Yasuda Hiroki

Classifications

• H10W90/724

  between a chip and a stacked insulating package substrate, interposer or RDL · CPC title

• H10F77/40

  Optical elements or arrangements (surface textures H10F77/70) · CPC title

• G02B6/4245 Primary

  Mounting of the opto-electronic elements · CPC title

• G02B6/4214 Primary

  the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device (G02B6/4246 takes precedence) · CPC title

• G02B6/425

  Optical features (semiconductor laser arrays H01S5/40; hybrid LED arrays H10W90/00) · CPC title