Photoirradiation device, photoirradiation method

Patent metadata

Field	Value
Publication number	US-11090684-B2
Application number	US-201816620146-A
Country	US
Kind code	B2
Filing date	Jun 12, 2018
Priority date	Jun 12, 2017
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

A photoirradiation device includes an insertion path for inserting a wire rod; a first reflector having a circular arc shape centered on a point shifted from a center of the insertion path by a first distance, one side of the first reflector facing the insertion path being a reflective surface; a second reflector disposed adjacent open edges of the first reflector and having a circular arc shape centered on a point shifted from the center of the insertion path by a second distance that is different from the first distance, one side of the second reflector facing the insertion path being a reflective surface; and a light source that is positioned on an opposite side of the insertion path from the first reflector and that projects light toward the wire rod.

First claim

The invention claimed is:

1. A photoirradiation device comprising:
an insertion path for inserting a wire rod;
a first reflector having a circular arc shape centered on a point shifted from a center of the insertion path by a first distance, one side of the first reflector facing the insertion path being a reflective surface;
a second reflector disposed adjacent open edges of the first reflector and having a circular arc shape centered on a point shifted from the center of the insertion path by a second distance that is different from the first distance, one side of the second reflector facing the insertion path being a reflective surface; and
a light source that is positioned on an opposite side of the insertion path from the first reflector and that projects light toward the wire rod.

2. The photoirradiation device according to claim 1 , wherein the light source is configured by a plurality of LED devices.

3. The photoirradiation device according to claim 2 , wherein the center of the insertion path is shifted from a circular arc center of the first reflector and a circular arc center of the second reflector in a direction away from the light source.

4. The photoirradiation device according to claim 3 , further comprising an insertion part made of a material having a transmitting property to light emitted from the light source, and forming the insertion path inside, wherein
the insertion part has an outer circumference positioned closer to the circular arc center of the first reflector relative to the reflective surface of the first reflector, and positioned closer to the circular arc center of the second reflector relative to the reflective surface of the second reflector.

5. The photoirradiation device according to claim 2 , further comprising an insertion part made of a material having a transmitting property to light emitted from the light source, and forming the insertion path inside, wherein
the insertion part has an outer circumference positioned closer to the circular arc center of the first reflector relative to the reflective surface of the first reflector, and positioned closer to the circular arc center of the second reflector relative to the reflective surface of the second reflector.

6. The photoirradiation device according to claim 2 , wherein the reflective surface of the first reflector and the reflective surface of the second reflector are formed as a curved surface.

7. The photoirradiation device according to claim 2 , wherein the reflective surface of the first reflector and the reflective surface of the second reflector are formed by a plurality of flat surfaces arranged in a circular arc shape.

8. The photoirradiation device according to claim 1 , wherein the center of the insertion path is shifted from a circular arc center of the first reflector and a circular arc center of the second reflector in a direction away from the light source.

9. The photoirradiation device according to claim 8 , further comprising an insertion part made of a material having a transmitting property to light emitted from the light source, and forming the insertion path inside, wherein
the insertion part has an outer circumference positioned closer to the circular arc center of the first reflector relative to the reflective surface of the first reflector, and positioned closer to the circular arc center of the second reflector relative to the reflective surface of the second reflector.

10. The photoirradiation device according to claim 8 , wherein the reflective surface of the first reflector and the reflective surface of the second reflector are formed as a curved surface.

11. The photoirradiation device according to claim 8 , wherein the reflective surface of the first reflector and the reflective surface of the second reflector are formed by a plurality of flat surfaces arranged in a circular arc shape.

12. The photoirradiation device according to claim 1 , further comprising an insertion part made of a material having a transmitting property to light emitted from the light source, and forming the insertion path inside, wherein
the insertion part has an outer circumference positioned closer to the circular arc center of the first reflector relative to the reflective surface of the first reflector, and positioned closer to the circular arc center of the second reflector relative to the reflective surface of the second reflector.

13. The photoirradiation device according to claim 12 , wherein the reflective surface of the first reflector and the reflective surface of the second reflector are formed as a curved surface.

14. The photoirradiation device according to claim 12 , wherein the reflective surface of the first reflector and the reflective surface of the second reflector are formed by a plurality of flat surfaces arranged in a circular arc shape.

15. The photoirradiation device according to claim 1 , wherein the reflective surface of the first reflector and the reflective surface of the second reflector are formed as a curved surface.

16. The photoirradiation device according to claim 1 , wherein the reflective surface of the first reflector and the reflective surface of the second reflector are formed by a plurality of flat surfaces arranged in a circular arc shape.

17. A photoirradiation method with which the photoirradiation device of claim 1 projects light toward the wire rod,
the photoirradiation method comprising:
a step of inserting the wire rod into a region inside the reflective surface of the first reflector and inside the reflective surface of the second reflector such that a center position of the wire rod is shifted by a first distance from a center of the reflective surface of the first reflector and shifted by a second distance that is different from the first distance from a center of the reflective surface of the second reflector; and
a step of projecting light toward the wire rod from the light source positioned on an opposite side of the wire rod from the first reflector.

Assignees

• Ushio Electric Inc

Inventors

• Shinoda Kazuhiko

Classifications

• H10H20/80

  Constructional details · CPC title

• B05D7/20

  to wires (for insulating electric cables H01B13/16) · CPC title

• B29C35/0805

  using electromagnetic radiation · CPC title

• C03C25/12

  General methods of coating; Devices therefor · CPC title

• G02B6/44

  Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables (cables incorporating electric conductors and optical fibres {where features relating to the optical fibres are not of interest} H01B11/22) · CPC title