EP1051365B1 - Verfahren zur erzeugung einer markierung in einem glaskörper - Google Patents
Verfahren zur erzeugung einer markierung in einem glaskörper Download PDFInfo
- 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
Links
- 239000011521 glass Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 230000005670 electromagnetic radiation Effects 0.000 claims description 2
- 230000005855 radiation Effects 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000002834 transmittance Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 210000004127 vitreous body Anatomy 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Images
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)
Description
Claims (4)
- Verfahren zur Erzeugung einer unter der Oberfläche liegenden Markierung in einem Körper aus Glas, das eine Transmissionskurve mit einem Plateaubereich bei Wellenlängen, die größer als die von Röntgenstrahlen sind, aufweist, wobei auf eine Oberfläche des Körpers ein Laserstrahl gerichtet wird, der den Körper bis zu der vorbestimmten Tiefe der Markierung zu durchdringen vermag und ferner an dem vorbestimmten Ort der Markierung innerhalb des Glases fokussiert wird und eine solche Leistungsdichte aufweist, daß an dem Ort eine Markierung in Form einer sich durch eine verringerte Durchlässigkeit für elektromagnetische Strahlung auszeichnenden Materialveränderung entsteht, im wesentlichen ohne daß an der Oberfläche des Körpers eine irgendwie feststellbare Veränderung eintritt, dadurch gekennzeichnet, daß eine Wellenlänge des Laserlichtes verwendet wird, bei der das Glas teildurchlässig ist und die kleiner als alle dem Plateaubereich entsprechenden Wellenlängen des Laserlichtes ist.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Wellenlänge innerhalb eines Wellenlängenbereiches liegt, bei dem ein Transmissionsgrad von 60 bis 95 % des Plateauniveaus gegeben ist.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Laserstrahl mittels eines Nd-YAG-Lasers erzeugt wird.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die dritte Harmonische verwendet wird.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19855623A DE19855623C1 (de) | 1998-12-02 | 1998-12-02 | Verfahren zur Erzeugung einer Markierung in einem Glaskörper |
| DE19855623 | 1998-12-02 | ||
| PCT/DE1999/003719 WO2000032531A1 (de) | 1998-12-02 | 1999-11-23 | Verfahren zur erzeugung einer markierung in einem glaskörper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1051365A1 EP1051365A1 (de) | 2000-11-15 |
| EP1051365B1 true EP1051365B1 (de) | 2002-06-05 |
Family
ID=7889753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99964365A Expired - Lifetime EP1051365B1 (de) | 1998-12-02 | 1999-11-23 | Verfahren zur erzeugung einer markierung in einem glaskörper |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6596966B1 (de) |
| EP (1) | EP1051365B1 (de) |
| JP (1) | JP2002531361A (de) |
| AT (1) | ATE218519T1 (de) |
| DE (2) | DE19855623C1 (de) |
| ES (1) | ES2177339T3 (de) |
| WO (1) | WO2000032531A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007019991A1 (de) * | 2005-08-18 | 2007-02-22 | Oc Oerlikon Balzers Ag | Lasermarkierung nahe der oberfläche bei innenbearbeiteten transparenten körpern |
| EP2896458A1 (de) * | 2014-01-16 | 2015-07-22 | Euroimmun Medizinische Labordiagnostika AG | Transparenter 0bjektträger mit Kennzeichnung |
Families Citing this family (19)
| 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 |
| KR20050094423A (ko) * | 2003-02-04 | 2005-09-27 | 아사히 가라스 가부시키가이샤 | 유리기판 표면의 이물 제거방법 |
| 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 |
| EP2774587B1 (de) | 2010-01-08 | 2021-10-20 | AMO Development, LLC | System zur Modifizierung des Augengewebes und Intraokularlinsen |
| 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 |
| CA3025663A1 (en) | 2016-05-31 | 2017-12-07 | Corning Incorporated | Anti-counterfeiting measures for glass articles |
Family Cites Families (15)
| 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 |
| IL99170A0 (en) * | 1990-08-15 | 1992-07-15 | United Distillers Plc | Method and apparatus for sub-surface marking |
| 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 |
| DE69625642T2 (de) * | 1995-05-23 | 2003-05-28 | Kyocera Corp., Kyoto | Methode zu Herstellung eines optischen Polarisators |
| 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 |
-
1998
- 1998-12-02 DE DE19855623A patent/DE19855623C1/de not_active Expired - Fee Related
-
1999
- 1999-11-23 DE DE59901616T patent/DE59901616D1/de not_active Expired - Fee Related
- 1999-11-23 WO PCT/DE1999/003719 patent/WO2000032531A1/de not_active Ceased
- 1999-11-23 AT AT99964365T patent/ATE218519T1/de not_active IP Right Cessation
- 1999-11-23 EP EP99964365A patent/EP1051365B1/de not_active Expired - Lifetime
- 1999-11-23 ES ES99964365T patent/ES2177339T3/es not_active Expired - Lifetime
- 1999-11-23 JP JP2000585177A patent/JP2002531361A/ja not_active Withdrawn
- 1999-11-23 US US09/601,443 patent/US6596966B1/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007019991A1 (de) * | 2005-08-18 | 2007-02-22 | Oc Oerlikon Balzers Ag | Lasermarkierung nahe der oberfläche bei innenbearbeiteten transparenten körpern |
| EP2896458A1 (de) * | 2014-01-16 | 2015-07-22 | Euroimmun Medizinische Labordiagnostika AG | Transparenter 0bjektträger mit Kennzeichnung |
| WO2015106774A1 (de) * | 2014-01-16 | 2015-07-23 | Euroimmun Medizinische Labordiagnostika Ag | Transparenter objektträger mit kennzeichnung |
| 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 |
|---|---|
| DE19855623C1 (de) | 2000-02-24 |
| WO2000032531A1 (de) | 2000-06-08 |
| EP1051365A1 (de) | 2000-11-15 |
| DE59901616D1 (de) | 2002-07-11 |
| JP2002531361A (ja) | 2002-09-24 |
| ATE218519T1 (de) | 2002-06-15 |
| ES2177339T3 (es) | 2002-12-01 |
| US6596966B1 (en) | 2003-07-22 |
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