Optical fiber cutter and method of cutting optical fiber

Patent metadata

Field	Value
Publication number	US-12197009-B2
Application number	US-202117926022-A
Country	US
Kind code	B2
Filing date	Feb 15, 2021
Priority date	May 20, 2020
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

An optical fiber cutter includes: a fiber holder that holds optical fibers disposed in a row in a first perpendicular direction perpendicular to a longitudinal direction of the optical fibers, wherein each of the optical fibers includes a glass portion and a coated portion that covers the glass portion; an alignment member having an insertion hole through which the glass portions extending from the fiber holder are inserted; a base including; a first placement portion on which the fiber holder is disposed; and a second placement portion positioned at a distance from the first placement portion, and on which the alignment member is disposed; and a blade member that scratches surfaces of the glass portions by moving in the first perpendicular direction between the first placement portion and the second placement portion with respect to the base.

First claim

The invention claimed is:

1. An optical fiber cutter comprising:
a fiber holder that holds optical fibers disposed in a row in a first perpendicular direction perpendicular to a longitudinal direction of the optical fibers, wherein each of the optical fibers comprises a glass portion and a coated portion that covers the glass portion;
an alignment member having an insertion hole through which the glass portions extending from the fiber holder are inserted;
a base comprising;
a first placement portion on which the fiber holder is disposed; and
a second placement portion positioned at a distance from the first placement portion, and on which the alignment member is disposed; and

a blade member that scratches surfaces of the glass portions by moving in the first perpendicular direction between the first placement portion and the second placement portion with respect to the base, wherein
an inner surface of the insertion hole does not press the glass portions in the insertion hole, and
the alignment member is undetachably attached to the base and moves in a second perpendicular direction perpendicular to the longitudinal direction and the first perpendicular direction.

2. An optical fiber cutter comprising:
a fiber holder that holds optical fibers disposed in a row in a first perpendicular direction perpendicular to a longitudinal direction of the optical fibers, wherein each of the optical fibers comprises a glass portion and a coated portion that covers the glass portion;
an alignment member having an insertion hole through which the glass portions extending from the fiber holder are inserted;
a base comprising;
a first placement portion on which the fiber holder is disposed; and
a second placement portion positioned at a distance from the first placement portion, and on which the alignment member is disposed; and

a blade member that scratches surfaces of the glass portions by moving in the first perpendicular direction between the first placement portion and the second placement portion with respect to the base, wherein
an inner surface of the insertion hole does not press the glass portions in the insertion hole,
the alignment member comprises a locking recess and is detachably attached to the base, and
the second placement portion has a locking protrusion to be inserted into the locking recess.

3. An optical fiber cutter comprising:
a fiber holder that holds optical fibers disposed in a row in a first perpendicular direction perpendicular to a longitudinal direction of optical fibers, wherein each of optical fibers comprises a glass portion and a coated portion that covers the glass portion;
an alignment member having an insertion hole through which the glass portions extending from the fiber holder are inserted;
a base comprising;
a first placement portion on which the fiber holder is disposed; and
a second placement portion positioned at a distance from the first placement portion, and on which the alignment member is disposed; and

a blade member that scratches surfaces of the glass portions by moving in the first perpendicular direction between the first placement portion and the second placement portion with respect to the base, wherein
an inner surface of the insertion hole does not press the glass portions in the insertion hole,
the alignment member is undetachably attached to the base and rotates with a fulcrum shaft parallel to the first perpendicular direction as a center.

4. The optical fiber cutter according to claim 1 , wherein the alignment member comprises:
a placement table having a placement surface on which the glass portions are disposed; and
a lid member that moves between a first position and a second position at which the placement surface is open, wherein the lid member at the first position is apart from the placement surface in the second perpendicular direction such that the insertion hole is between the lid member and the placement surface.

5. The optical fiber cutter according to claim 4 , wherein the lid member is connected to the placement table and rotationally moves between the first position and the second position.

6. The optical fiber cutter according to claim 1 , wherein a height dimension of the insertion hole in the second perpendicular direction is larger than a diameter dimension of each of the glass portions and smaller than twice the diameter dimension.

7. A method of cutting an optical fiber, comprising:
preparing an optical fiber cutter including a fiber holder, an alignment member having an insertion hole, and a blade member;
with the fiber holder, holding optical fibers disposed in a row in a first perpendicular direction perpendicular to a longitudinal direction of the optical fiber, wherein each of optical fibers comprises a glass portion and a coated portion that covers the glass portion;
inserting the glass portions extending from the fiber holder through the insertion hole;
moving the alignment member to be separated from the fiber holder in a state in which the fiber holder is fixed, or moving both the fiber holder and the alignment member such that the fiber holder is separated from the alignment member;
aligning the glass portions such that parts of the glass portions positioned between the fiber holder and the alignment member are aligned in a row in the first perpendicular direction; and
scratching surfaces of the glass portions with the blade member.

8. The optical fiber cutter according to claim 2 , wherein the alignment member comprises:
a placement table having a placement surface on which the glass portions are disposed; and
a lid member that moves between a first position and a second position at which the placement surface is open, wherein the lid member at the first position is apart from the placement surface in a second perpendicular direction perpendicular to the longitudinal direction and the first perpendicular direction such that the insertion hole is between the lid member and the placement surface.

9. The optical fiber cutter according to claim 8 , wherein the lid member is connected to the placement table and rotationally moves between the first position and the second position.

10. The optical fiber cutter according to claim 2 , wherein a height dimension of the insertion hole in a second perpendicular direction perpendicular to the longitudinal direction and the first perpendicular direction is larger than a diameter dimension of each of the glass portions and smaller than twice the diameter dimension.

11. The optical fiber cutter according to claim 3 , wherein the alignment member comprises:
a placement table having a placement surface on which the glass portions are disposed; and
a lid member that moves between a first position and a second position at which the placement surface is open, wherein the lid member at the first position is apart from the placement surface in a second perpendicular direction perpendicular to the longitudinal direction and the first perpendicular direction such that the insertion hole is between the lid member and the placement surface.

12. The optical fiber cutter according to claim 11 , wherein the lid member is connected to the placement table and rotationally moves between the first position and the second position.

13. The optical fiber cutter according to claim 3 , wherein a height dimension of the insertion hole in a second perpendicular direction perpendicular to the longitudinal direction and the first perpendicular direction is larger than a diameter dimension of each of the glass portions and smaller than twice the diameter dimension.

Assignees

• Fujikura Ltd

Inventors

• Tachibana Yuuko
• Hasegawa Ryo
• Kanda Yoshiharu

Classifications

• C03B37/16 Primary

  Cutting or severing (light guides G02B6/25) · CPC title

• G02B6/25 Primary

  Preparing the ends of light guides for coupling, e.g. cutting · CPC title