Optical communications device having a plate-shaped flexible printed circuit with metallic pattern

Patent metadata

Field	Value
Publication number	US-10416407-B2
Application number	US-201816167945-A
Country	US
Kind code	B2
Filing date	Oct 23, 2018
Priority date	Nov 17, 2017
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

An optical communications device includes a support, a plate-shaped member, and an optical cable. The plate-shaped member is supported in a curved state on the support. The plate-shaped member is a flexible printed circuit including a flexible substrate and a metallic pattern formed on the flexible substrate. The optical cable is provided along a curved surface of the plate-shaped member on the support.

First claim

What is claimed is:

1. An optical communications device comprising:
a support;
a plate-shaped member supported in a curved state on the support, the plate-shaped member being a flexible printed circuit including a flexible substrate and a metallic pattern formed on the flexible substrate; and
an optical cable provided along a curved surface of the plate-shaped member on the support.

2. The optical communications device as claimed in claim 1 , wherein the plate-shaped member does not form an electrical circuit.

3. The optical communications device as claimed in claim 1 , wherein
the plate-shaped member includes
a body forming the curved surface; and
a plurality of fixation parts extending from the body and soldered to the support, and

the plurality of fixation parts are provided one at each of a plurality of positions along a longitudinal direction of the plate-shaped member.

4. The optical communications device as claimed in claim 3 , wherein the metallic pattern is formed on a portion of the substrate serving as the plurality of fixation parts.

5. The optical communications device as claimed in claim 4 , wherein
the support is a printed board,
the printed board includes a plurality of fixation pads provided one at each of multiple positions along an arc corresponding to the curved surface, and
the plurality of fixation parts are provided one at each of the plurality of positions corresponding to the plurality of fixation pads.

6. The optical communications device as claimed in claim 4 , wherein
the support is a printed board,
the printed board includes a plurality of holes provided one at each of multiple positions along an arc corresponding to the curved surface, and
the plurality of fixation parts are provided one at each of the plurality of positions corresponding to the plurality of holes, and are protrusions fitted into the plurality of holes.

7. The optical communications device as claimed in claim 4 , wherein
the support is a printed board, and
at least one of the plurality of fixation parts is soldered to a part mounted on the printed board.

8. The optical communications device as claimed in claim 4 , wherein
the support is a printed board including an opening, and
at least one of the plurality of fixation parts is soldered to a part protruding through the opening.

9. The optical communications device as claimed in claim 4 , wherein
the plate-shaped member includes a tab extending from an end of the body facing away from the support, the tab protruding toward or away from a center of curvature of the curved surface relative to the body, and
the metallic pattern is formed on a portion of the substrate serving as the tab.

10. The optical communications device as claimed in claim 9 , wherein an area occupancy rate of the metallic pattern on the substrate is higher in a bent region between the tab and the body than in another region of the body.

11. The optical communications device as claimed in claim 4 , wherein the metallic pattern forms a stripe pattern in a portion of the substrate serving as the body.

Assignees

• Fujitsu Optical Components Ltd

Inventors

• Sakurai Yuki
• Ohtani Toshihiro

Classifications

• H05K2201/10121

  Optical component, e.g. opto-electronic component · CPC title

• H05K2201/09781

  Dummy conductors, i.e. not used for normal transport of current; Dummy electrodes of components · CPC title

• G02B6/4281

  the printed circuit boards being flexible (in general H05K1/147) · CPC title

• G02B6/4246

  Bidirectionally operating package structures · CPC title

• H04B10/40

  Transceivers · CPC title