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Fiber spatial coupling device

A space coupling, optical fiber technology, applied in the coupling of optical waveguide, optics, light guide, etc.

Inactive Publication Date: 2018-09-28
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Operating Fiber-Guided Lasers
Optical system focuses the laser light on the operating fiber

Method used

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  • Fiber spatial coupling device
  • Fiber spatial coupling device
  • Fiber spatial coupling device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0022] figure 1 It is a schematic diagram showing the configuration of the optical fiber spatial coupling device 100 according to the first embodiment.

[0023] Such as figure 1 As shown, the optical fiber spatial coupling device 100 has a condenser lens 2 (optical system), a detachable operating optical fiber 3 and a main body 6 . The condenser lens 2 condenses the laser light 1 on the operating optical fiber 3 . The operating optical fiber 3 guides the laser light 1 condensed by the condensing lens 2 . The main body 6 is substantially box-shaped, and holds the condenser lens 2 . The optical fiber spatial coupling device 100 may also have a lens holder 4 , a plug hole 5 and a housing 7 . The lens holder 4 holds the condenser lens 2 . The plug hole 5 detachably holds the handling optical fiber 3 . The case 7 holds the main body 6 .

[0024] In addition, a gas supply port 8 (purge gas supply port) for supplying a gas (purge gas) is provided in the main body 6 of the op...

Embodiment approach 2

[0043] In this embodiment, the same components as those in Embodiment 1 are assigned the same symbols, and detailed description thereof will be omitted. The difference between this embodiment and Embodiment 1 is that air (air) is used as the purge gas; The pump 250 of the gas supply unit that supplies the scavenging air under pressure.

[0044] figure 2 It is a schematic diagram showing the configuration of the optical fiber spatial coupling device 200 according to the second embodiment.

[0045] Such as figure 2 As shown, the optical fiber spatial coupling device 200 has a condensing lens 2 (optical system), an operating optical fiber 23 and a main body 26 . The optical fiber spatial coupling device 200 may also have a plug hole 25 and a housing 7 . The operating optical fiber 23 guides the laser light 1 condensed by the condensing lens 2 . The plug hole 25 detachably holds the handling optical fiber 23 . That is, the plug hole 25 is used to make the optical fiber 23 ...

Embodiment approach 3

[0064] In this embodiment, the same components as those in Embodiment 1 and Embodiment 2 are assigned the same symbols, and detailed description thereof will be omitted. This embodiment differs from Embodiment 2 in that, instead of the control based on the pump that pressurizes and supplies the purge air, a disconnection detection circuit 370 , that is, a lock release detection circuit 370 , is provided as a plug hole that operates the optical fiber insertion / extraction determination unit. circuit. Furthermore, the difference is that a safety valve 360 ​​is provided as a pressure relief unit that opens the valve to release the excess pressure if the internal pressure of the main body 36 is excessive; and that the inner diameter of the system for supplying purge air is enlarged.

[0065] image 3 It is a schematic diagram showing the structure of the optical fiber spatial coupling device 300 according to the third embodiment.

[0066] Such as image 3 As shown, the optical f...

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PUM

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Abstract

This fiber spatial coupling device includes a detachable process fiber, an optical system, and a main body. The process fiber guides laser light. The optical system focuses the laser light onto the process fiber. The main body holds the optical system, and has a supply port for supplying gas between the process fiber and the optical system.

Description

technical field [0001] The present disclosure relates to an optical fiber spatial coupling device that transmits a light beam incident on an optical fiber through a condenser lens. Background technique [0002] Laser light emitted from the laser oscillator needs to be sent to a processing point (processing head) for processing. As methods for transmitting laser light, there are methods using mirrors, methods using optical fibers, and the like. Laser transmission using an optical fiber is performed because the transmission loss of the laser light is small due to the ease of transmission of the laser light. [0003] In laser transmission using an optical fiber, generally, a laser beam is coupled to an operating optical fiber using a fiber spatial coupling device having an optical system, and the laser beam is guided to a processing point (processing head) for welding and cutting processing. [0004] When coupling laser light to the handling optical fiber, it is necessary to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/32B23K26/064
CPCG02B6/32G02B6/4296G02B27/0006G02B2006/4297G02B6/3866G02B6/4292B23K26/067B23K26/064G02B6/4206G02B6/4256
Inventor 竹中义彰西村仁志龙堂诚王静波西尾正敏江泉清隆山口秀明石川谅长安同庆
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD