Optical module

Patent metadata

Field	Value
Publication number	US-9651748-B2
Application number	US-201615071478-A
Country	US
Kind code	B2
Filing date	Mar 16, 2016
Priority date	Apr 23, 2015
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

An optical module includes: an optical/electrical composite board including: a wiring board; an optical waveguide disposed on the wiring board; and a first optical path changing portion disposed at one end portion of the optical waveguide, a lens component including a lens configured to collect the light emitted from the optical path changing portion; and a fixation member fixed to the optical/electrical composite board. A through hole is formed through the lens component. The lens component is disposed on the optical/electrical composite board such that the fixation member is disposed in the through hole. A resin portion is provided in the through hole such that the fixation member is embedded in the resin portion.

First claim

What is claimed is:

1. An optical module comprising:
an optical/electrical composite board comprising:
a wiring board;
an optical waveguide formed directly on the wiring board and configured to guide light; and
a first optical path changing portion formed directly on one end portion of the optical waveguide to change an optical path of the light travelling in the optical waveguide,

a lens component comprising a lens configured to collect the light emitted from the first optical path changing portion; and
a fixation member fixed to the optical/electrical composite board,
wherein
a through hole is formed through the lens component,
the lens component is disposed on the optical/electrical composite board such that the fixation member is disposed in the through hole, and
a resin portion is provided in the through hole such that the fixation member is embedded in the resin portion.

2. The optical module of claim 1 , wherein the fixation member is solder bonded to the optical/electrical composite board.

3. The optical module of claim 1 , wherein
the fixation member has an opposing surface opposed to the optical/electrical composite board with a certain distance therebetween, and
at least a portion of the resin portion is provided in a space between the optical/electrical composite board and the opposing surface of the fixation member so as to contact the opposing surface.

4. The optical module of claim 1 , wherein
the lens component further comprises a protrusion portion protruding from an inner circumferential surface defining the through hole, and
the protrusion portion is embedded in the resin portion.

5. The optical module of claim 1 , wherein
the lens component has a central section where the lens is arranged, and a peripheral section where the through hole is formed,
a step is formed in a boundary between a lower surface of the central section, which is opposed to the optical/electrical composite board, and a lower surface of the peripheral section, which is opposed to the optical/electrical composite board, and
a gap is formed between the lower surface of the central section and the optical/electrical composite board.

6. The optical module of claim 1 , wherein
the lens component further comprises a mounting portion configured to allow an optical fiber connector to be mounted on the lens component, and
the optical fiber connector is attached to an end portion of an optical fiber configured to receive the light collected by the lens.

7. The optical module of claim 1 , further comprising an optical element disposed on the optical/electrical composite board, and
wherein the optical/electrical composite board further comprises a second optical path changing portion disposed at the other end portion of the optical waveguide and configured to optically couple the optical element and the optical waveguide.

Assignees

• Shinko Electric Ind Co

Inventors

• Yanagisawa Kenji

Classifications

• G02B6/322

  and having centering means being part of the lens for the self-positioning of the lightguide at the focal point, e.g. holes, wells, indents, nibs · CPC title

• G02B6/4206

  Optical features (G02B6/4207, G02B6/421 take precedence) · CPC title

• G02B6/4214

  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

• G02B6/428

  containing printed circuit boards [PCB] · CPC title

• G02B6/4239

  Adhesive bonding; Encapsulation with polymer material · CPC title