DE3425263A1 - Method for the inscribing of information into the volume of materials by means of a laser beam - Google Patents

Method for the inscribing of information into the volume of materials by means of a laser beam

Info

Publication number
DE3425263A1
DE3425263A1 DE19843425263 DE3425263A DE3425263A1 DE 3425263 A1 DE3425263 A1 DE 3425263A1 DE 19843425263 DE19843425263 DE 19843425263 DE 3425263 A DE3425263 A DE 3425263A DE 3425263 A1 DE3425263 A1 DE 3425263A1
Authority
DE
Germany
Prior art keywords
volume
depth
laser beam
materials
information
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.)
Withdrawn
Application number
DE19843425263
Other languages
German (de)
Inventor
Ernst Dipl.-Phys. Dr.rer.nat. DDR 6902 Jena Heumann
Jürgen Dipl.-Phys. Dr.rer.nat. DDR 4850 Weißenfels Kleinschmidt
Willy Dipl.-Ing. Kramer
Rolf Dipl.-Chem. Dr.rer.nat. Müller
Erich DDR 7280 Eilenburg Sauer
Klaus Dipl.-Phys. Dr.rer.nat. DDR 5300 Weimar Vogler
Gerhard Dipl.-Pyhs. Dr.sc.nat. DDR 6900 Jena Wiederhold
Wolfgang Dipl.-Phys. DDR 6904 Dorndorf Zschocke
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.)
Friedrich Schiller Universtaet Jena FSU
Original Assignee
Friedrich Schiller Universtaet Jena FSU
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 Friedrich Schiller Universtaet Jena FSU filed Critical Friedrich Schiller Universtaet Jena FSU
Publication of DE3425263A1 publication Critical patent/DE3425263A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • G01D13/02—Scales; Dials
    • G01D13/04—Construction
    • 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
    • B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
    • 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
    • B23K26/50—Working by transmitting the laser beam through or within the workpiece
    • B23K26/53—Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/007—Marks, e.g. trade marks
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/16—Composite materials, e.g. fibre reinforced
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/30—Organic material
    • B23K2103/42—Plastics
    • 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
    • B41M5/262—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used recording or marking of inorganic surfaces or materials, e.g. glass, metal, or ceramics
    • 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
    • B41M5/267—Marking of plastic artifacts, e.g. with laser

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)
  • Holo Graphy (AREA)

Abstract

The invention relates to a method for the irreversible and unalterable inscribing of information into the volume of materials by means of laser radiation. The focused laser beam operates at any desired depth of the volume. Special beam focusing makes it possible to produce structures which, as regards their depth, are wide or three-dimensional without affecting the surface of the materials. This makes the information input proof against forgery.

Description

Verfahren zum Einschreiben von Informationen in das Vo-Procedure for writing information into the vo

lumen von Materialien mittels Lasers-trahl Die Erfindung betrifft ein Verfahren zum irreversiblen Einschreiben von Informationen in an sich transparente Materialien, die beim Herstellungsprozeß evtl. mit Farbstoffen versehen werden, derart, daß das fertige Material die Laserstrahlung schwach absorbiert. Das Verfahren kann insbesondere zum Einschreiben von Zeichen, Symbolen, Skalen und anderen Strukturen in das Volumen des Materials verwendet werden. wobei die Oberfläche des Materials völlig unbeeinflußt bleibt. Die Erfindung kann demgemäß überall dort angewendet werden, wo durch Beschädigungen der Material oberfläche die eingeschriebene Information nicht gelöscht werden darf.lumen of materials by means of laser beam The invention relates to a method for the irreversible writing of information in per se transparent Materials that may be provided with dyes during the manufacturing process, such that the finished material weakly absorbs the laser radiation. The procedure can be used in particular for inscribing signs, symbols, scales and other structures in the volume of the material used. being the surface of the material remains completely unaffected. The invention can accordingly be used anywhere where the written information is lost due to damage to the material surface may not be deleted.

Bisher sind zum Einspeichern von Informationen in das Volumen nur holographische Verfahren für lichtempfindliche Materialien bekannt. Dabei werden die durch Überlagerung kohärenter Wellen, die zum Beispiel durch einen Laser erzeugt werden, entstehenden Interferenzmuster in das Volumen solcher Materialien eingeschrieben. Durch erneute Bestrahlung des Volumenhologramms mit kohärentem Licht wird ein optisches Bild des ursprünglichen Objekts erzeugt. Die bekannten technischen Lösungen sind mit dem erfindungsgemäßen Verfahren nicht vergleichbar.So far, information has been stored in the volume only known holographic processes for photosensitive materials. Be there the by superimposition of coherent waves generated for example by a laser the resulting interference patterns are written into the volume of such materials. By re-irradiating the volume hologram with coherent light, it becomes an optical one Image of the original object created. The known technical solutions are not comparable with the method according to the invention.

Die Erfindung verfolgt das Ziel, Informationen (Sc5riftzeichen, Strukturen, Symbole, Skalen usw.) in das Volumen von Materialien einzuschreiben derart, daß durch Beschädigungen der Oberfläche die eingeschriebenen Informationen nicht gelöscht werden können, Der Erfindung liegt die Aufgabe zugrunde, die Möglichkeiten und den Anwendungsbereich der Kennzeichnung von Materialion mit Lasern zu erweitern derart, daß Zeichen, Symbole usw. in das Volumen von Materialien eingeschrieben werden.The aim of the invention is to provide information (characters, structures, To inscribe symbols, scales, etc.) into the volume of materials in such a way that the written information is not deleted due to damage to the surface The invention is based on the object of the possibilities and the To expand the scope of the marking of material ions with lasers in such a way that that signs, symbols, etc. are inscribed in the volume of materials.

Die Lösung dieser Aufgabe gelingt mit einem Verfahren erfindungsgemäß dadurch, daß die Laserstrahlung in das Volumen von an sich transparenten Materialien, welche beim Herstellungsprozeß evtl. mit einem Farbstoff versehen worden sind, hinein fokussiert wird.This object is achieved with a method according to the invention in that the laser radiation in the volume of inherently transparent materials, which may have been provided with a dye during the manufacturing process is focused.

Der Vorteil des erfindungsgemäßen Verfahrens besteht vor allen Dingen darin, daß durch die Wahl der Fokussierung die Information in verschiedene Tiefen eingeschrieben werden kann, ohne die Oberfläche zu beeinflussen Außerdem können die eingebrachten Symbole, Zeichen usw.The advantage of the method according to the invention is above all else in the fact that the choice of focus the information in different depths can be enrolled without affecting the surface the symbols, signs, etc.

durch- Beschädigungen der Oberfläche nicht gelöscht werden, wodurch absolut fälschungssichere Dokumente hergestellt werden können. Durch spezielle Strahlfokussierung in das Volumen ermöglicht das erfindungsgeuäße Verfahren die Herstellung von bezüglich der Tiefe breiten oder dreidimensionalen Strukturen, welche z. Bo zur Herstellung vonparallaxefreien Skalen oder modischer Effekte Anwendung finden können.damage to the surface will not be erased, whereby absolutely forgery-proof documents can be produced. Through special beam focusing In the volume, the method according to the invention enables the production of with respect to the depth wide or three-dimensional structures, which z. Bo for making of parallax-free scales or fashionable effects can be used.

Das Wesen der Erfindung soll an einem im folgenden näher beschriebenen Ausführungsbeispiel erläutert werden. Vorteilhafterweise wird ein kontinuierlich strahlender Laser verwendet, dessen Strahablenkung z. B. rechnergesteuert ist Die Laserstrahlumg wird derart in das Volumen des mit einem Farbstoff dotierten Materials (Glas, transparenter Plastwerkstoff) hineinfokussiert, daß der Strahlfokus in beliebig einstellbarer Tiefe des Volumens liegt, dabei ist die Energiedichte der Strahlung an der Ein- und Austrittsfläche noch so gering, daß keine Beeinflussung des Materials erfolgt. Im Fokusgebiet ist die Intensität so hoch, daß eine chemische Umsetzung in den Absorptionszentren erfolgt und somit die eingebrachte Information sichtbar hervortritt.The essence of the invention is intended to be described in more detail below Embodiment are explained. Advantageously, one is continuous shining laser used whose beam deflection z. B. computer controlled The laser beam is so in the volume of the doped with a dye Materials (glass, transparent plastic) that the beam focus lies in any adjustable depth of the volume, where is the energy density the radiation at the entry and exit surfaces is so low that it is not influenced of the material. In the focus area the intensity is so high that a chemical Implementation in the absorption centers takes place and thus the information introduced visibly emerges.

Claims (5)

Pat entans#rüche fi Verfahren zum irreversiblen und nicht veränderbaren Einbringen von Informationen in das Volumen von transparenten Materialien, dadurch gekennzeichnet. daß mittels Laserstrahl abgestimmter Energiedichte, welcher in das Volumen des Materials fokussiert wird, das fertige Material,-dem gegebenenfalls zusätzlich den Laserstrahl absorbierende Stoffe zugesetzt werden. sichtbar und bleibend verändert wird. Patent claims for irreversible and non-changeable procedures Bringing information into the volume of transparent materials, thereby marked. that by means of a laser beam tuned energy density, which in the Volume of the material is focused, the finished material, -dem if necessary In addition, the laser beam absorbing substances are added. visible and lasting is changed. 2. Verfahren nach Anspruch 1-, dadurch gekennzeichnet1 daß die Laserstrahlung in beliebige Tiefen des Materialvolumens fokussiert wird, ohne dabei die Materialoberfläche zu beeinflussen. 2. The method according to claim 1-, characterized1 that the laser radiation is focused in any depth of the material volume without affecting the material surface to influence. 3. Verfahren nach den Ansprüchen 1 un 2, dadurch gekennzeichnet, daß durch spezielle Fokussierung ein in der Tiefe längeres Fokusgebiet respektiv eine bezüglich der Tiefe breite Struktur entsteht. 3. The method according to claims 1 and 2, characterized in that that through special focusing a focus area that is longer in depth, respectively a structure that is broad in terms of depth is created. 4. Verfahren nach den Ansprüchen 1 bis 3. dadurch gekennzeichnet, daß durch spezielle Fokussierung eine dreidimensionale Struktur im Volumen entsteht. 4. The method according to claims 1 to 3, characterized in that that special focusing creates a three-dimensional structure in the volume. 5. Verfahren nacg Anspruch 1, dadurch gekennzeichnet, daß als im Volumen zu strukturierendes Material Plaste beispielsweise beliebig eingefärbte ein- oder mehrschichtige transparente und/oder gedeckte Celluloseesterformmassen und~ oder PVD oder Polyolefinformmassen bzw. modifizierte PVG oder Polyolefinformmassen verwendet werden. 5. The method according to claim 1, characterized in that as im Volume to be structured material plastic, for example any colored single-layer or multilayer, transparent and / or opaque cellulose ester molding compositions and ~ or PVD or polyolefin molding compounds or modified PVG or polyolefin molding compounds be used.
DE19843425263 1983-07-22 1984-07-10 Method for the inscribing of information into the volume of materials by means of a laser beam Withdrawn DE3425263A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD25331083 1983-07-22

Publications (1)

Publication Number Publication Date
DE3425263A1 true DE3425263A1 (en) 1985-01-31

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Family Applications (1)

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Country Status (2)

Country Link
CH (1) CH666210A5 (en)
DE (1) DE3425263A1 (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0219012A2 (en) * 1985-10-15 1987-04-22 GAO Gesellschaft für Automation und Organisation mbH Data carrier with an optical authenticity feature, and method of making and checking the data carrier
DE3634857A1 (en) * 1985-10-15 1987-04-30 Gao Ges Automation Org Identity card with visually visible indication of authenticity and process for production of the same
EP0310810A1 (en) * 1987-10-09 1989-04-12 Walter Winston Duley Laser etching of foam substrate
US4972061A (en) * 1987-12-17 1990-11-20 Duley Walter W Laser surface treatment
FR2687102A1 (en) * 1992-02-12 1993-08-13 Jaeger METHOD FOR PERSONALIZING VEHICLE DASHBOARDS, SYSTEM USING THE SAME AND DASHBOARD THUS OBTAINED.
DE4312095A1 (en) * 1992-09-08 1994-03-10 Borus Spezialverfahren Permanent laser marking of object - is used to produce invisible marking on non-metallic, valuable or important object e.g. IC housing, optics, currency or artwork for security and/or identification
DE4407547A1 (en) * 1994-03-07 1995-09-21 Swarovski & Co Transparent esp. glass body with internal marking
EP0543899B1 (en) * 1990-08-15 1997-03-26 United Distillers Plc Sub-surface marking
DE10015702A1 (en) * 2000-03-29 2001-10-18 Vitro Laser Gmbh Method for introducing at least one internal engraving into a flat body and device for carrying out the method
DE10122335C1 (en) * 2001-05-08 2002-07-25 Schott Glas Process for marking glass comprises selecting the marking position along a drawing process having a glass transition temperature above the transformation temperature
EP1245407A2 (en) † 2001-03-30 2002-10-02 Setec oy Data sheet
US6537479B1 (en) * 2000-08-24 2003-03-25 Colbar Art, Inc. Subsurface engraving of three-dimensional sculpture
EP1411381A1 (en) * 2002-10-17 2004-04-21 Hensoldt AG Method of arranging a structure in form of a cross hair in a telescope
DE10350266A1 (en) * 2003-10-28 2005-06-02 Volkswagen Ag Headlamp for a motor vehicle has a source of light, a reflector and a light outflow plastic pane as well as a light-scattering element
US7743639B2 (en) 2003-12-02 2010-06-29 Mtu Aero Engines Gmbh Method, device, and test specimen for testing a part, and use of the method and device
DE102013017363A1 (en) * 2013-10-18 2015-04-23 Horst-Hermann Hennig Reflectors in the glass
US9907365B2 (en) 2014-11-11 2018-03-06 New Balance Athletics, Inc. Method of providing decorative designs and structural features on an article of footwear
US10441033B2 (en) 2014-11-11 2019-10-15 New Balance Athletics, Inc. Method of providing decorative designs and structural features on an article of footwear

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0219012A2 (en) * 1985-10-15 1987-04-22 GAO Gesellschaft für Automation und Organisation mbH Data carrier with an optical authenticity feature, and method of making and checking the data carrier
DE3634857A1 (en) * 1985-10-15 1987-04-30 Gao Ges Automation Org Identity card with visually visible indication of authenticity and process for production of the same
US4766026A (en) * 1985-10-15 1988-08-23 Gao Gesellschaft Fur Automation Und Organisation Mbh Identification card with a visible authenticity feature and a method of manufacturing said card
US4765656A (en) * 1985-10-15 1988-08-23 Gao Gesellschaft Fur Automation Und Organisation Mbh Data carrier having an optical authenticity feature and methods for producing and testing said data carrier
EP0219012A3 (en) * 1985-10-15 1989-05-31 G A O Gesellschaft Fur Automation Und Organisation Mbh Data carrier with an optical authenticity feature, and method of making and checking the data carrier
US4894110A (en) * 1985-10-15 1990-01-16 Gao Gesellschaft Fur Automation Und Organisation Mbh Identification card with a visible authenticity feature
EP0310810A1 (en) * 1987-10-09 1989-04-12 Walter Winston Duley Laser etching of foam substrate
US4933205A (en) * 1987-10-09 1990-06-12 Duley Walter W Laser etching of foam substrate
US4972061A (en) * 1987-12-17 1990-11-20 Duley Walter W Laser surface treatment
EP0543899B1 (en) * 1990-08-15 1997-03-26 United Distillers Plc Sub-surface marking
EP0556120A1 (en) * 1992-02-12 1993-08-18 Jaeger Adaptation method for vehicle dashboards, system to accomplish this method and resulting dashboard
FR2687102A1 (en) * 1992-02-12 1993-08-13 Jaeger METHOD FOR PERSONALIZING VEHICLE DASHBOARDS, SYSTEM USING THE SAME AND DASHBOARD THUS OBTAINED.
DE4312095A1 (en) * 1992-09-08 1994-03-10 Borus Spezialverfahren Permanent laser marking of object - is used to produce invisible marking on non-metallic, valuable or important object e.g. IC housing, optics, currency or artwork for security and/or identification
US5369273A (en) * 1992-09-08 1994-11-29 Borus Spezialverfahren Und -Gerate Im Sondermaschinen-Bau Gmbh Method for labeling an object using laser radiation
DE4407547A1 (en) * 1994-03-07 1995-09-21 Swarovski & Co Transparent esp. glass body with internal marking
DE10015702A1 (en) * 2000-03-29 2001-10-18 Vitro Laser Gmbh Method for introducing at least one internal engraving into a flat body and device for carrying out the method
US6537479B1 (en) * 2000-08-24 2003-03-25 Colbar Art, Inc. Subsurface engraving of three-dimensional sculpture
EP1245407A2 (en) † 2001-03-30 2002-10-02 Setec oy Data sheet
EP1245407B2 (en) † 2001-03-30 2013-08-21 Gemalto Oy Data sheet
DE10122335C1 (en) * 2001-05-08 2002-07-25 Schott Glas Process for marking glass comprises selecting the marking position along a drawing process having a glass transition temperature above the transformation temperature
US6674043B2 (en) 2001-05-08 2004-01-06 Schott Glas Method and apparatus for marking glass with a laser
EP1411381A1 (en) * 2002-10-17 2004-04-21 Hensoldt AG Method of arranging a structure in form of a cross hair in a telescope
DE10350266A1 (en) * 2003-10-28 2005-06-02 Volkswagen Ag Headlamp for a motor vehicle has a source of light, a reflector and a light outflow plastic pane as well as a light-scattering element
DE10350266B4 (en) * 2003-10-28 2015-05-13 Volkswagen Ag Headlight or lamp for a motor vehicle
US7743639B2 (en) 2003-12-02 2010-06-29 Mtu Aero Engines Gmbh Method, device, and test specimen for testing a part, and use of the method and device
DE102013017363A1 (en) * 2013-10-18 2015-04-23 Horst-Hermann Hennig Reflectors in the glass
US9907365B2 (en) 2014-11-11 2018-03-06 New Balance Athletics, Inc. Method of providing decorative designs and structural features on an article of footwear
US10441033B2 (en) 2014-11-11 2019-10-15 New Balance Athletics, Inc. Method of providing decorative designs and structural features on an article of footwear
US11633019B2 (en) 2014-11-11 2023-04-25 New Balance Athletics, Inc. Method of providing decorative designs and structural features on an article of footwear

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Publication number Publication date
CH666210A5 (en) 1988-07-15

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