CA2621225A1 - Laser marking system for gemstones and method of authenticating marking - Google Patents

Laser marking system for gemstones and method of authenticating marking Download PDF

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Publication number
CA2621225A1
CA2621225A1 CA002621225A CA2621225A CA2621225A1 CA 2621225 A1 CA2621225 A1 CA 2621225A1 CA 002621225 A CA002621225 A CA 002621225A CA 2621225 A CA2621225 A CA 2621225A CA 2621225 A1 CA2621225 A1 CA 2621225A1
Authority
CA
Canada
Prior art keywords
laser
gemstone
marking
optical system
holder
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.)
Granted
Application number
CA002621225A
Other languages
French (fr)
Other versions
CA2621225C (en
Inventor
George R. Kaplan
Oded Anner
Leonid Gurvich
Avigdor Shachrai
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.)
Lazare Kaplan International Inc
Original Assignee
Individual
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
Priority claimed from US08/690,309 external-priority patent/US5932119A/en
Application filed by Individual filed Critical Individual
Publication of CA2621225A1 publication Critical patent/CA2621225A1/en
Application granted granted Critical
Publication of CA2621225C publication Critical patent/CA2621225C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A laser microinscribing system includes a Q-switched Nd:YLF laser (1) with a harmonic converter producing an output of about 530 nm, an optical system including a focusing lens, a gemstone mounting holder (144) that is displaceable along three axes for moving a workpiece (11) such as a gemstone with respect to the optical system so that laser energy is presented to desired positions, an imaging system for viewing the gemstone from a plurality of viewpoints including a top CCD (28) and a side CCD (32), a processor controlling the position of the holder (144) based on marking instructions and a predetermined program, and a storage system (156) for storing information relating to images of a plurality of workpieces. A rigid frame supports the laser (1), the optical system and the holder (144) to increase immunity to vibrational misalignments. A secure certificate of authenticity of a marked workpiece (11) is preferably provided having an image of the marking as well as the outline of a girdle of the gemstone.
CA 2621225 1996-01-05 1996-11-14 Laser marking system for gemstones and method of authenticating marking Expired - Fee Related CA2621225C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US963896P 1996-01-05 1996-01-05
US60/009,638 1996-01-05
US08/690,309 US5932119A (en) 1996-01-05 1996-07-30 Laser marking system
US08/690,309 1996-07-30
CA002238612A CA2238612C (en) 1996-01-05 1996-11-14 Laser marking system for gemstones and method of authenticating marking

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002238612A Division CA2238612C (en) 1996-01-05 1996-11-14 Laser marking system for gemstones and method of authenticating marking

Publications (2)

Publication Number Publication Date
CA2621225A1 true CA2621225A1 (en) 1997-07-17
CA2621225C CA2621225C (en) 2009-11-03

Family

ID=39400609

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2621225 Expired - Fee Related CA2621225C (en) 1996-01-05 1996-11-14 Laser marking system for gemstones and method of authenticating marking

Country Status (1)

Country Link
CA (1) CA2621225C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108694886A (en) * 2017-04-07 2018-10-23 北京柯斯元科技有限公司 Anti-fake marking device
CN113843510A (en) * 2021-09-13 2021-12-28 武汉先同科技有限公司 Mobile marking type handheld laser marking machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12072294B2 (en) * 2022-05-25 2024-08-27 Oino Llc Systems and methods for reliable authentication of jewelry and/or gemstones

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108694886A (en) * 2017-04-07 2018-10-23 北京柯斯元科技有限公司 Anti-fake marking device
CN113843510A (en) * 2021-09-13 2021-12-28 武汉先同科技有限公司 Mobile marking type handheld laser marking machine
CN113843510B (en) * 2021-09-13 2024-06-04 武汉先同科技有限公司 Mobile marking type hand-held laser marking machine

Also Published As

Publication number Publication date
CA2621225C (en) 2009-11-03

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Legal Events

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MKLA Lapsed

Effective date: 20161114