JPS6453793A - Optical lens device for large output laser - Google Patents

Optical lens device for large output laser

Info

Publication number
JPS6453793A
JPS6453793A JP62207741A JP20774187A JPS6453793A JP S6453793 A JPS6453793 A JP S6453793A JP 62207741 A JP62207741 A JP 62207741A JP 20774187 A JP20774187 A JP 20774187A JP S6453793 A JPS6453793 A JP S6453793A
Authority
JP
Japan
Prior art keywords
lens
laser light
gas
hole
diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62207741A
Other languages
Japanese (ja)
Inventor
Keiji Ehata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP62207741A priority Critical patent/JPS6453793A/en
Publication of JPS6453793A publication Critical patent/JPS6453793A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

PURPOSE:To prevent a load onto a lens and to prevent a gas leaking from a lens by providing a lens having no through hole sufficiently apart from the lens forming at the center part the through hole having smaller diameter than that of a laser light and feeding an assisting gas in the space with a work. CONSTITUTION:The light having passed through a 1st lens 11 is focused at a focal point F, further enlarged and made incident on a 2nd lens 12. Due to the 2nd lens 12 being located at the place apart three times the focal distance of the 1st lens 11 the diameter of the laser light incident on the 2nd lens 12 becomes about two times the diameter of the laser light incident on the 1st lens 11. Therefor, the energy becomes in the state of being scattered and diluted. The laser light having passed through the 2nd lens 12 is converged on a work 14 by coming out of an opening part 21 with its focusing. An assisting gas is fed from an assisting gas feeding pipe 13, coming out of the opening part 21 and fed to a laser light converging part. At this time, the 2nd lens has no through hole and no gas is leaked to the 1st lens side.
JP62207741A 1987-08-20 1987-08-20 Optical lens device for large output laser Pending JPS6453793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62207741A JPS6453793A (en) 1987-08-20 1987-08-20 Optical lens device for large output laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62207741A JPS6453793A (en) 1987-08-20 1987-08-20 Optical lens device for large output laser

Publications (1)

Publication Number Publication Date
JPS6453793A true JPS6453793A (en) 1989-03-01

Family

ID=16544766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62207741A Pending JPS6453793A (en) 1987-08-20 1987-08-20 Optical lens device for large output laser

Country Status (1)

Country Link
JP (1) JPS6453793A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0428734A1 (en) * 1989-05-08 1991-05-29 Fanuc Ltd. Laser beam machining device
JP7186937B1 (en) * 2022-06-17 2022-12-09 三菱電機株式会社 LASER PROCESSING HEAD, LASER PROCESSING APPARATUS, AND METHOD OF MANUFACTURING METAL PRODUCT

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0428734A1 (en) * 1989-05-08 1991-05-29 Fanuc Ltd. Laser beam machining device
EP0428734A4 (en) * 1989-05-08 1992-02-24
JP7186937B1 (en) * 2022-06-17 2022-12-09 三菱電機株式会社 LASER PROCESSING HEAD, LASER PROCESSING APPARATUS, AND METHOD OF MANUFACTURING METAL PRODUCT
WO2023243086A1 (en) * 2022-06-17 2023-12-21 三菱電機株式会社 Laser beam machining head, laser beam machining device, and metal product production method

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