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EP1051365B1 - Procede pour produire une marque dans un corps en verre - Google Patents

Procede pour produire une marque dans un corps en verre Download PDF

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Publication number
EP1051365B1
EP1051365B1 EP99964365A EP99964365A EP1051365B1 EP 1051365 B1 EP1051365 B1 EP 1051365B1 EP 99964365 A EP99964365 A EP 99964365A EP 99964365 A EP99964365 A EP 99964365A EP 1051365 B1 EP1051365 B1 EP 1051365B1
Authority
EP
European Patent Office
Prior art keywords
glass
marking
laser
wavelength
laser beam
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.)
Expired - Lifetime
Application number
EP99964365A
Other languages
German (de)
English (en)
Other versions
EP1051365A1 (fr
Inventor
Jörg Kickelhain
Gennadij Kusnezow
Dieter Biere
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.)
LPKF Laser and Electronics AG
Original Assignee
LPKF Laser and Electronics AG
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 LPKF Laser and Electronics AG filed Critical LPKF Laser and Electronics AG
Publication of EP1051365A1 publication Critical patent/EP1051365A1/fr
Application granted granted Critical
Publication of EP1051365B1 publication Critical patent/EP1051365B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used

Definitions

  • This invention relates to a method of producing an under-surface Marking in a body made of glass that shows a transmission curve with a Has a plateau region at wavelengths greater than that of X-rays, whereby a laser beam is directed onto a surface of the body, which strikes the body up to the predetermined depth of the mark can penetrate and further on the predetermined location of the marking is focused within the glass and such Power density has that a mark in the form of a by a reduced permeability to electromagnetic radiation Material change occurs, essentially without being on the surface of the body there is a change that is somehow noticeable.
  • EP 0 543 899 B1 describes a method for generating a marking in one Glass body known according to the preamble of claim 1.
  • Laser radiation with such an energy density is used that at the focus, ie where the marking is to be made, the energy density is sufficient to be permanent Changes within the body made of glass or another material can exist. It is described as advantageous if the Energy density at the focus of the laser beams is at least 10 J / cm2, since this is about Threshold for the occurrence of localized ionization of the glass molecules.
  • the Known methods for this purpose use laser radiation with a wavelength of 1.06 ⁇ m used.
  • the disadvantage here is that at this wavelength in the infrared range, the associated one The degree of transmission for glass lies in the plateau region of the transmission curve of the glass. This means that at this wavelength the transmission of the laser beams through the Vitreous body with linear absorption behavior is approximately maximum. So that desired change of the glass in the focus area of the laser beam - that is Desired nonlinear absorption behavior - must occur, as stated above certain energy density threshold are exceeded. This energy density threshold is however, if the laser radiation is in the infrared range, very sharp, causing an abrupt Transition from linear absorption to the nonlinear marking effect Absorption takes place.
  • the invention is therefore based on the object of a generic method for To make available with which the individual, together making up the marking Marker points with a very small minimum diameter can be created.
  • inventive method for glass interior structuring compared to the prior art the advantage that the laser radiation due to lower used wavelengths is better focusable and thus also more economical Conditions are created to keep the focus as small as possible.
  • a wavelength is preferably selected for the laser radiation at which the Transmittance is 60 to 95% of the plateau level.
  • the laser radiation is generated by means of an Nd-YAG laser, for example the third harmonic or the fourth harmonic is also used.
  • the wavelength will be in the UV range. It is of course important that the The wavelength is chosen so large that the glass body is partially transparent, at which there is sufficient radiation intensity at the desired marking location.
  • the single figure shows schematically a typical transmission curve of a conventional one Type of glass.
  • the plateau region of the transmission curve is approximately formed by the transmission values which are given at the wavelengths greater than ⁇ 3 .
  • laser radiation which, depending on the glass chosen in each case, has a wavelength which is less than ⁇ 3 , but at which the transmission is not negligibly low, which is the case in the figure for wavelengths greater than ⁇ 0 is.
  • a preferred wavelength range is, for example, the range ⁇ 1 ⁇ ⁇ 2 .
  • the invention can be carried out, for example, as follows:
  • Ordinary glass BK 7 in the form of a plate with a thickness of 1 mm is irradiated with laser beams with a wavelength of 355 nm using an Nd-YAG laser. This is done in such a way that the laser beam is focused within the glass plate with the usual means, the focus being 0.5 mm below the surface of the glass plate.
  • the laser is operated at a repetition rate of 5 kHz.
  • the pulse duration is 100 ns, the power density in focus is approximately 500 MW / cm 2 .
  • marking points that have a diameter of only 20 ⁇ m.
  • the marking points are lined up with a distance of 5 ⁇ m to pass through Overlap to give an almost continuous line.
  • the one used here The power density in focus is significantly lower than that of the known methods required power density.
  • the repetition rate may also be up to 10 kHz be.
  • Suprasil 1 quartz glass was used under the same external process conditions processed.
  • this quartz glass is the one to Wavelength 355 nm transmittance in the plateau range.
  • the quartz glass does not achieve such a fine structuring as that of the BK 7 glass become. Rather, the extent of the marking points on the quartz glass was clear larger than the BK7 glass.
  • the markings produced by the method according to the invention can e.g. to Labeling or for decorative purposes.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laser Beam Processing (AREA)
  • Surface Treatment Of Glass (AREA)
  • Glass Compositions (AREA)
  • Lasers (AREA)

Claims (4)

  1. Procédé d'obtention d'un repère (marquage), situé au-dessous de la surface dans un corps en verre, qui présente une courbe de transmission ayant une zone formant plateau à des longueurs d'onde qui sont supérieures à celles des rayons X, procédé dans lequel un faisceau laser est dirigé sur une surface du corps de manière à pouvoir pénétrer dans le corps jusqu'à la profondeur prédéterminée du repère et est, en outre, focalisé à l'emplacement prédéterminé du repère à l'intérieur du verre, le faisceau présentant une densité de puissance telle que soit obtenu, à cet emplacement, un repère sous la forme d'une modification de la matière se caractérisant par une transparence réduite au rayonnement électromagnétique, sensiblement sans que n'ait lieu, à la surface du corps, et ce d'une façon ou d'une autre, une modification décelable, caractérisé en ce que l'on utilise une longueur d'onde de la lumière laser, à laquelle le verre est semi-transparent et qui est inférieure à toutes les longueurs d'onde de la lumière laser, correspondant à la zone formant plateau.
  2. Procédé selon la revendication 1, caractérisé en ce que la longueur d'onde est située dans une gamme de longueurs d'onde, pour laquelle on obtient un facteur de transmission de 60 à 95 % du niveau du plateau.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le faisceau laser est produit au moyen d'un laser YAG dopé au néodyme.
  4. Procédé selon la revendication 3, caractérisé en ce que l'on utilise le troisième harmonique.
EP99964365A 1998-12-02 1999-11-23 Procede pour produire une marque dans un corps en verre Expired - Lifetime EP1051365B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19855623 1998-12-02
DE19855623A DE19855623C1 (de) 1998-12-02 1998-12-02 Verfahren zur Erzeugung einer Markierung in einem Glaskörper
PCT/DE1999/003719 WO2000032531A1 (fr) 1998-12-02 1999-11-23 Procede pour produire une marque dans un corps en verre

Publications (2)

Publication Number Publication Date
EP1051365A1 EP1051365A1 (fr) 2000-11-15
EP1051365B1 true EP1051365B1 (fr) 2002-06-05

Family

ID=7889753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99964365A Expired - Lifetime EP1051365B1 (fr) 1998-12-02 1999-11-23 Procede pour produire une marque dans un corps en verre

Country Status (7)

Country Link
US (1) US6596966B1 (fr)
EP (1) EP1051365B1 (fr)
JP (1) JP2002531361A (fr)
AT (1) ATE218519T1 (fr)
DE (2) DE19855623C1 (fr)
ES (1) ES2177339T3 (fr)
WO (1) WO2000032531A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007019991A1 (fr) * 2005-08-18 2007-02-22 Oc Oerlikon Balzers Ag Repere laser pratique dans des corps usines a l'interieur, a proximite de la surface
EP2896458A1 (fr) * 2014-01-16 2015-07-22 Euroimmun Medizinische Labordiagnostika AG Support d'objet transparent avec identification

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122335C1 (de) * 2001-05-08 2002-07-25 Schott Glas Verfahren und Vorrichtung zum Markieren von Glas mit einem Laser
DE10137864B4 (de) * 2001-08-02 2005-05-19 Picorapid Technologie Gmbh Substanzträger mit Markierung
RU2243102C2 (ru) * 2001-11-12 2004-12-27 ЗАО "ГруппСтайл" Способ формирования изображений и устройство для его осуществления
WO2004069760A1 (fr) * 2003-02-04 2004-08-19 Asahi Glass Company, Limited Procede permettant d'eliminer un corps etranger de la surface d'un substrat de verre
DE102005026038A1 (de) 2005-06-03 2006-12-07 Boraglas Gmbh Verfahren zur Markierung von Objektoberflächen
DE102005025982B4 (de) * 2005-06-03 2008-04-17 Martin-Luther-Universität Halle-Wittenberg Farbig strukturierte Low-E-Schichtsysteme und Verfahren zur Erzeugung der farbig strukturierten Low-E-Schichtsysteme sowie deren Verwendung
US8541105B2 (en) * 2005-08-18 2013-09-24 Oerlikon Trading Ag, Trubbach Transparent substrates with dielectric layer having a marking below the surface of the transparent substrate
DE102005043516A1 (de) * 2005-09-12 2007-03-15 Boraglas Gmbh Verfahren zur Herstellung farbiger Strukturen im Glas und dadurch hergestelltes Glas
DE102007028042B3 (de) 2007-06-14 2008-08-07 Universität Zu Lübeck Verfahren zur Laserbearbeitung transparenter Materialien
DE102008004995B3 (de) * 2008-01-17 2008-12-04 Schott Ag Lasermarkierte Glasscheiben und deren Verwendung als Beleuchtungselemente
US20100119808A1 (en) * 2008-11-10 2010-05-13 Xinghua Li Method of making subsurface marks in glass
US9393382B2 (en) * 2009-05-05 2016-07-19 Robert W. Heck High-flow tapered peripheral IV catheter with side outlets
CN102791228B (zh) * 2010-01-08 2016-05-11 眼科医疗公司 修正眼睛组织和人工晶状体的系统
US10085886B2 (en) 2010-01-08 2018-10-02 Optimedica Corporation Method and system for modifying eye tissue and intraocular lenses
DE102010037273A1 (de) 2010-09-02 2012-03-08 Schott Ag Verfahren und Vorrichtung zum Markieren von Glas
US20130001237A1 (en) * 2011-06-29 2013-01-03 Marsh Dennis R Glass Container Having Sub-Surface Wall Decoration and Method of Manufacture
GB201200890D0 (en) * 2012-01-19 2012-02-29 Univ Dundee An ion exchange substrate and metalized product and apparatus and method for production thereof
DE102014205066A1 (de) 2014-03-19 2015-10-08 Schott Ag Vorgespannter Glasartikel mit Laserinnengravur und Herstellverfahren
TWI739843B (zh) 2016-05-31 2021-09-21 美商康寧公司 用於玻璃製品的防偽措施

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5175425A (en) * 1987-06-15 1992-12-29 Leuze Electronic Gmbh & Co. Process for marking semiconductor surfaces
DE4126626C2 (de) * 1990-08-15 1994-08-04 United Distillers Plc Markierter Materialkörper und Verfahren zu dessen Herstellung
US5248638A (en) * 1992-04-06 1993-09-28 Corning Incorporated Yellow high silica glass
DE4321301A1 (de) * 1992-07-06 1994-01-13 Zeiss Carl Fa Dünne Schicht aus Galliumoxid und Herstellverfahren dafür
DE4430710C1 (de) * 1994-08-30 1996-05-02 Jenaer Glaswerk Gmbh Borsäurearmes Borosilikatglas und seine Verwendung
US5864427A (en) * 1995-05-23 1999-01-26 Kyocera Corporation Polarizer and production method thereof
US5557171A (en) * 1995-06-15 1996-09-17 Osram Sylvania Inc. High intensity discharge lamp with ultra violet absorbing envelope
JP3395140B2 (ja) * 1995-11-08 2003-04-07 住友重機械工業株式会社 レーザマーキング方法
JP3412416B2 (ja) * 1996-10-03 2003-06-03 ウシオ電機株式会社 ガラスマーキング方法
JPH10123357A (ja) * 1996-10-24 1998-05-15 Nippon Sheet Glass Co Ltd 光導波路に対するレーザ加工方法
JP3957010B2 (ja) * 1997-06-04 2007-08-08 日本板硝子株式会社 微細孔を有するガラス基材
DE19728766C1 (de) * 1997-07-07 1998-12-17 Schott Rohrglas Gmbh Verwendung eines Verfahrens zur Herstellung einer Sollbruchstelle bei einem Glaskörper
US6392683B1 (en) * 1997-09-26 2002-05-21 Sumitomo Heavy Industries, Ltd. Method for making marks in a transparent material by using a laser
JPH11119439A (ja) * 1997-10-17 1999-04-30 Hitachi Ltd 液晶マスク式露光マーキング装置
US6211526B1 (en) * 1998-09-30 2001-04-03 The United States Of America As Represented By The Secretary Of The Navy Marking of materials using luminescent and optically stimulable glasses

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007019991A1 (fr) * 2005-08-18 2007-02-22 Oc Oerlikon Balzers Ag Repere laser pratique dans des corps usines a l'interieur, a proximite de la surface
EP2896458A1 (fr) * 2014-01-16 2015-07-22 Euroimmun Medizinische Labordiagnostika AG Support d'objet transparent avec identification
WO2015106774A1 (fr) * 2014-01-16 2015-07-23 Euroimmun Medizinische Labordiagnostika Ag Porte-objet transparent muni d'un marquage d'identification
US10082660B2 (en) 2014-01-16 2018-09-25 Euroimmun Medizinische Labordiagnostika Ag Transparent microscope slide having a marking

Also Published As

Publication number Publication date
JP2002531361A (ja) 2002-09-24
US6596966B1 (en) 2003-07-22
EP1051365A1 (fr) 2000-11-15
DE59901616D1 (de) 2002-07-11
ES2177339T3 (es) 2002-12-01
ATE218519T1 (de) 2002-06-15
WO2000032531A1 (fr) 2000-06-08
DE19855623C1 (de) 2000-02-24

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