JPS57181790A - Irradiating method for laser - Google Patents

Irradiating method for laser

Info

Publication number
JPS57181790A
JPS57181790A JP56064156A JP6415681A JPS57181790A JP S57181790 A JPS57181790 A JP S57181790A JP 56064156 A JP56064156 A JP 56064156A JP 6415681 A JP6415681 A JP 6415681A JP S57181790 A JPS57181790 A JP S57181790A
Authority
JP
Japan
Prior art keywords
laser
mirror
article
focal plane
reflected
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
JP56064156A
Other languages
Japanese (ja)
Inventor
Masatoshi Inagaki
Ryutaro Jinbo
Tadashi Nemoto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56064156A priority Critical patent/JPS57181790A/en
Publication of JPS57181790A publication Critical patent/JPS57181790A/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
    • B23K26/073—Shaping the laser spot
    • B23K26/0734—Shaping the laser spot into an annular shape

Landscapes

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

Abstract

PURPOSE:To make the focal plane of irradiated laser coincident always with the surface of an article despite the change in the diameter of the article by converting the laser to laser having an annular focus and irradiating the laser thereof to the article. CONSTITUTION:Laser 1 having a circular section is reflected by a circular conical mirror 11 and is conducted to a curved reflecting mirror 13. The laser 3 reflected by the mirror 13 is shaped to a torus-shaped beam parallel approximately with a cylindrical article 6 or 7 so as to form the focal plane in the position determined by the radius R of curvature of the mirror 13. The laser 3 is relfected by a relfecting mirror 12 of a circular conical bore provided on the optical path thereof and is irradiated to the outside circumferential surface of the article 6 or 7 from the direction normal thereto. During this time, the installation position X of the mirror 12 is moved axially, by which the position of the focal plane can be regulated as desired. As a result, the focal plane of the laser light is matched always to the inside and outside surfaces of the cylindrical article and the laser worked layers of stable film thicknesses are obtained.
JP56064156A 1981-04-30 1981-04-30 Irradiating method for laser Pending JPS57181790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56064156A JPS57181790A (en) 1981-04-30 1981-04-30 Irradiating method for laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56064156A JPS57181790A (en) 1981-04-30 1981-04-30 Irradiating method for laser

Publications (1)

Publication Number Publication Date
JPS57181790A true JPS57181790A (en) 1982-11-09

Family

ID=13249922

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56064156A Pending JPS57181790A (en) 1981-04-30 1981-04-30 Irradiating method for laser

Country Status (1)

Country Link
JP (1) JPS57181790A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658109A (en) * 1986-05-15 1987-04-14 The United States Of America As Represented By The Secretary Of The Army Cylindrical laser welder
WO1994003829A1 (en) * 1992-07-31 1994-02-17 Kodak Limited Optical means for annular illumination of a spot
WO1999010238A3 (en) * 1997-08-22 1999-05-20 Bausch & Stroebel Maschf Sealing ampoules by means of a laser beam
WO2006072550A1 (en) * 2005-01-03 2006-07-13 Siemens Aktiengesellschaft Device for laser beam welding on surfaces of rotationally symmetrical components comprising a device for displacing the laser beam along the workpiece
DE102011013210A1 (en) * 2011-03-04 2012-09-06 Laser Zentrum Hannover E.V. Apparatus and method for processing at least one workpiece

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658109A (en) * 1986-05-15 1987-04-14 The United States Of America As Represented By The Secretary Of The Army Cylindrical laser welder
WO1994003829A1 (en) * 1992-07-31 1994-02-17 Kodak Limited Optical means for annular illumination of a spot
EP0653075A1 (en) * 1992-07-31 1995-05-17 Kodak Ltd Optical means for annular illumination of a spot.
WO1999010238A3 (en) * 1997-08-22 1999-05-20 Bausch & Stroebel Maschf Sealing ampoules by means of a laser beam
WO2006072550A1 (en) * 2005-01-03 2006-07-13 Siemens Aktiengesellschaft Device for laser beam welding on surfaces of rotationally symmetrical components comprising a device for displacing the laser beam along the workpiece
DE102011013210A1 (en) * 2011-03-04 2012-09-06 Laser Zentrum Hannover E.V. Apparatus and method for processing at least one workpiece

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