Optical fiber assembly and connection structure of optical fiber assembly and electronic device

Patent metadata

Field	Value
Publication number	US-10409016-B2
Application number	US-201916263848-A
Country	US
Kind code	B2
Filing date	Jan 31, 2019
Priority date	Aug 7, 2017
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

An optical fiber including a circuit board, a converter, an optical fiber, an external connecting part, and a pressable part. The circuit board includes first and second faces opposite to each other. The first face has first and second regions being different regions. The second face has third and fourth regions on the opposite side to the first and second regions, respectively. The converter is an opto-electronic or electro-optic converter on the first region of the circuit board. The optical fiber includes a leading end portion optically connected to the converter. A circuit on the first region of the circuit board is electrically connected to the converter. The external connecting part is disposed on the fourth region of the circuit board. The pressable part is fixed to the circuit board and positioned on the second region of the circuit board without contacting the converter, the optical fiber, or the circuit.

First claim

What is claimed is:

1. An optical fiber assembly comprising:
a circuit board including a first face and a second face on the opposite side to the first face, the first face having first and second regions being different regions from each other, and the second face having a third region on the opposite side to the first region and a fourth region on the opposite side to the second region;
a converter being an opto-electronic or electro-optic converter on the first region of the circuit board;
an optical fiber including a first portion being a leading end portion of the optical fiber, the first portion being optically connected to the converter;
a circuit on the first region of the circuit board, the circuit being electrically connected to the converter;
an external connecting part on the fourth region of the circuit board; and
a pressable part fixed directly or indirectly to the circuit board such as to be positioned on the second region of the circuit board without contacting the converter, the optical fiber, or the circuit, wherein
the first and second faces of the circuit board are the faces of the circuit board on one and the other sides, respectively, of a thickness direction of the circuit board,
the external connecting part is located on the other side of the thickness direction relative to the pressable part, and
the external connecting part is entirely disposed within a projected area of the pressable part in the thickness direction of the circuit board.

2. The optical fiber assembly according to claim 1 , wherein the external connecting part is a connector mounted on the fourth region of the second face of the circuit board.

3. An optical fiber assembly comprising:
a circuit board including a first face and a second face on the opposite side to the first face, the first face having first and second regions being different regions from each other, and the second face having a third region on the opposite side to the first region and a fourth region on the opposite side to the second region;
a converter being an opto-electronic or electro-optic converter on the first region of the circuit board;
an optical fiber including a first portion being a leading end portion of the optical fiber, the first portion being optically connected to the converter;
a circuit on the first region of the circuit board, the circuit being electrically connected to the converter;
an external connecting part on the fourth region of the circuit board; and
a pressable part fixed directly or indirectly to the circuit board such as to be positioned on the second region of the circuit board without contacting the converter, the optical fiber, or the circuit, wherein
the first region of the circuit board is positioned on one side of a first direction relative to the second region of the circuit board, the first direction extending substantially parallel to the first face of the circuit board,
the optical fiber further includes a second portion extending to the other side of the first direction, from the first portion of the optical fiber and across the second region of the circuit board, and
the pressable part includes:
a cover portion extending over the second region of the circuit board and covering the second portion of the optical fiber in a noncontact manner, and
a pair of legs extending from the cover portion toward the circuit board on opposite sides of the second portion of the optical fiber without contacting the second portion, the legs being fixed directly or indirectly to the circuit board.

4. The optical fiber assembly according to claim 3 , wherein
the first and second faces of the circuit board are the faces of the circuit board on one and the other sides, respectively, of a thickness direction of the circuit board,
the second region of the first face of the circuit board includes a projection region that corresponds to a projected area of the cover portion of the pressable part,
the fourth region of the second face of the circuit board includes a corresponding region having an outer shape that corresponds to an outer shape of the projected area, the corresponding region being located on an opposite side to, and at a position corresponding to, the projection region, and
the external connecting part is located within the corresponding region of the fourth region.

5. The optical fiber assembly according to claim 3 , wherein
the first and second faces of the circuit board are the faces of the circuit board on one and the other sides, respectively, of a thickness direction of the circuit board, and
the external connecting part is located on the other side of the thickness direction relative to the cover portion of the pressable part.

6. The optical fiber assembly according to claim 5 , wherein the external connecting part is a connector mounted on the fourth region of the second face of the circuit board.

7. The optical fiber assembly according to claim 1 , further comprising a cover having electrical conductivity, wherein
the circuit board further includes:
a first mounting portion on one side of a first direction of the circuit board, the first direction extending substantially parallel to the first face of the circuit board, and
a second mounting portion on the other side of the first direction relative to the first mounting portion and the first region of the circuit board,

the cover includes:
a cover body covering the first and second regions of the first face of the circuit board, the converter, the first portion of the optical fiber, and the circuit,
a first attachment portion fixed directly or indirectly to the first mounting portion of the circuit board, and
a second attachment portion fixed directly or indirectly to the second mounting portion of the circuit board, and

the pressable part is constituted by a portion of the cover body that is located over the second region, and the second attachment portion.

8. The optical fiber assembly according to claim 7 , wherein
the first mounting portion includes:
a first end portion on one side of a second direction, the second direction intersecting the first direction, and
a second end portion on the other side of the second direction,

the first attachment portion includes a pair of first legs extending from the cover body toward the circuit board, and
the first legs are provided with respective engagement holes to fittingly receive corresponding engaging protrusions on the end faces of the first and second end portions of the first mounting portion, or alternatively the end faces of the first and second end portions of the first mounting portion are provided with respective engagement holes to fittingly receive corresponding engaging protrusions on the first legs.

9. The optical fiber assembly according to claim 7 further comprising a pair of fixed parts, wherein
the fixed parts are fixed to the first region of the circuit board, without contacting the converter, the optical fiber, or the circuit,
the first attachment portion includes a pair of first legs extending from the cover body toward the circuit board, and
the first legs are fixed to the respective fixed parts.

10. The optical fiber assembly according to claim 7 , wherein
the second mounting portion includes:
a first end portion on one side of a second direction, the second direction intersecting the first direction, and
a second end portion on the other side of the second direction,

the circuit board further includes a pair of second stops including one and the other second stops on the one and other sides, respectively, of the second direction,
the one second stop is positioned on the one side of the first direction, and projects to the one side

Assignees

• Hosiden Corp

Inventors

• Sasada Kosuke
• Nagata Takayuki

Classifications

• G02B6/4257

  having a supporting carrier or a mounting substrate or a mounting plate (G02B6/3648 takes precedence) · CPC title

• H01R12/716

  Coupling device provided on the PCB · CPC title

• G02B6/4249

  comprising arrays of active devices and fibres · CPC title

• G02B6/424

  Mounting of the optical light guide · CPC title

• G02B6/4261 Primary

  Packages with mounting structures to be pluggable or detachable, e.g. having latches or rails · CPC title