IL176196A - Method and apparatus for scanning a gemstone - Google Patents
Method and apparatus for scanning a gemstoneInfo
- Publication number
- IL176196A IL176196A IL176196A IL17619606A IL176196A IL 176196 A IL176196 A IL 176196A IL 176196 A IL176196 A IL 176196A IL 17619606 A IL17619606 A IL 17619606A IL 176196 A IL176196 A IL 176196A
- Authority
- IL
- Israel
- Prior art keywords
- gemstone
- laser beams
- laser
- illumination
- captured
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/2518—Projection by scanning of the object
- G01B11/2522—Projection by scanning of the object the position of the object changing and being recorded
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/87—Investigating jewels
Claims (33)
1. An apparatus for determining the shape of a gemstone including concavities on its surface, the gemstone having a size not smaller than a predetermined minimal size,the apparatus comprising: (a) a platform adapted to support the gemstone; (b) a scanning system adapted to provide geometrical information concerning the three-dimensional convex envelope of the gemstone; (c) an illumination system adapted to project on said gemstone illumination in the form of at least two laser beams along at least two separate optical paths; (d) an imaging system adapted to capture at least a portion of said illumination when reflected from the gemstone; and (e) a processor adapted to determine said shape based on the captured illumination and said geometrical information; the apparatus being adapted to rotate said gemstone with respect to the illumination system about an axis of rotation; at least one of said paths being spaced from said axis of rotation.
2. An apparatus according to Claim 1, wherein the gemstone has a size not smaller than a predetermined minimal size, and said illumination system has an optical axis and is adapted to produce said laser beams such that they pass through a plane, which includes said axis of rotation and is oriented perpendicularly to said optical axis, at locations spaced apart from each other to a distance smaller than said minimal size.
3. An apparatus according to Claim 1, wherein the gemstone has a size not greater than a predetermined maximal size, and said plurality of laser beams comprises a first extreme laser beam and a second extreme laser beam, all other laser beams being projected therebetween, wherein said extreme laser beams are 01653187X47-01 176196/2 spaced from each other at least in the vicinity of the platform to a distance greater than said maximal size of the gemstone.
4. An apparatus according to Claim 1, wherein said processor is adapted to calculate, based on said geometrical information, a predicted reflection of each laser beam, to compare the captured reflections with said predicted reflections and to relate each captured reflection to its corresponding predicted reflection, to determine said shape of the gemstone based on the comparison and said geometrical information.
5. An apparatus according to Claim 1, wherein the laser beams are linear so that the projection of each of them on the gemstone is in the form of a point.
6. An apparatus according to Claim 1, wherein the laser beams are planar so that the projection of each of them on the gemstone is in the form of a line.
7. An apparatus according to Claim 1, wherein the platform is adapted to rotate, thereby providing the rotation.
8. An apparatus according to Claim 1, wherein the illumination system and the imaging system are adapted to rotate, thereby providing the rotation.
9. An apparatus according to Claim 1, wherein the illumination system comprises a multi-beam laser source.
10. An apparatus according to Claim 6, wherein each of said laser beams from the multi-beam laser source is disposed at an angle whose value is within the range of 0.05° and 10° with respect to adjacent laser beams.
11. An apparatus according to Claim 1, wherein the illumination system comprises at least two laser sources, each of which projects at least one laser beam.
12. An apparatus according to Claim 1, wherein the imaging system comprises a camera having a CCD. 01653187 7-01 176196/2
13. An apparatus according to Claim 1, wherein the scanning system comprises at least said imaging system and a light source facing said platform and being disposed substantially opposite the imaging system.
14. An apparatus according to Claim 1, wherein the processor is adapted to calculate the convex envelope.
15. An apparatus according to Claim 1, wherein said convex envelope is a composite of silhouettes of the gemstone provided by the scanning system.
16. An apparatus for determining the shape of a gemstone having a size being no greater than a predetermined maximal size, the apparatus comprising: (a) a platform adapted to support the gemstone; (b) a scanning system adapted to provide geometrical information concerning the three-dimensional convex envelope of the gemstone; (c) at least one laser source being adapted to project a plurality of laser beams, said plurality of laser beams comprising a first extreme laser beam and a second extreme laser beam, all other laser beams being projected therebetween; (d) an imaging system adapted to capture at least a portion of said illumination when reflected from the gemstone; and (e) a processor adapted to determine said shape based on the captured illumination and said geometrical information, wherein said extreme laser beams are spaced from each other at least in the vicinity of the platform to a distance greater than said maximal size of the gemstone.
17. An apparatus according to Claim 16, wherein the gemstone has a size not smaller than a predetermined minimal size, and said illumination system has an optical axis and is adapted to produce said laser beams such that they pass through a plane, which includes said axis of rotation and is oriented 01653187\47-01 176196/2 perpendicularly to said optical axis, at locations spaced apart from each other to a distance smaller than said minimal size.
18. An apparatus according to Claim 16, wherein said processor adapted to calculate, based on said geometrical information, a predicted reflection of each laser beam, to compare the captured reflections with said predicted reflections and to relate each captured reflection to its corresponding predicted reflection, to determine said shape of the gemstone based on the comparison and said geometrical information.
19. An apparatus according to Claim 16, wherein the laser beams are linear so that the projection of each of them on the gemstone is in the form of a point.
20. An apparatus according to Claim 16, wherein the laser beams are planar so that the projection of each of them on the gemstone is in the form of a line.
21. An apparatus according to Claim 16, wherein each of said the laser beams from the laser source is disposed at an angle of 0.38° with respect to adjacent laser beams.
22. An apparatus according to Claim 16, wherein the platform is adapted to rotate, thereby providing the rotation.
23. An apparatus according to Claim 16, wherein the at least one laser source and the imaging system are adapted to rotate, thereby providing the rotation.
24. An apparatus according to Claim 16, wherein the imaging system comprises a camera having a CCD.
25. An apparatus according to Claim 16, wherein the scanning system comprises at least said imaging system and a light source facing said platform and being disposed substantially opposite the imaging system.
26. An apparatus according to Claim 16, wherein the processor is adapted to calculate the convex envelope.
27. An apparatus according to Claim 16, wherein said convex envelope is a composite of silhouettes of the gemstone provided by the scanning system. 01653187\47-01 176196/2
28. An apparatus for determining the shape of a gemstone, the apparatus comprising: (a) a platform adapted to support the gemstone; (b) a scanning system adapted to provide geometrical information concerning the three-dimensional convex envelope of the gemstone; (c) an illumination system comprising at least one laser source, said illumination system being adapted to project on said gemstone illumination in the form of at least two laser beams along at least two separate paths; (d) an imaging system adapted to capture at least a portion of said illumination when reflected off the gemstone; and (e) a processor adapted to calculate, based on said geometrical information, a predicted reflection of each laser beam, to compare the captured reflections with said predicted reflections and to relate each captured reflection to its corresponding predicted reflection, to determine said shape of the gemstone based on the comparison and said geometrical information.
29. An apparatus according to Claim 28, wherein the gemstone has a size not smaller than a predetermined minimal size, and said illumination system has an optical axis and is adapted to produce said laser beams such that they pass through a plane, which includes said axis of rotation and is oriented perpendicularly to said optical axis, at locations spaced apart from each other to a distance smaller than said minimal size.
30. An apparatus according to Claim 28, wherein the relating is accomplished by determining the proximity of each of the captured reflections to a predicted reflection. 01653187X47-01 176196/1
31. An apparatus according to Claim 28, wherein the relating is accomplished by determining which side of each predicted reflection each captured reflection falls.
32. An apparatus according to Claim 28, wherein each laser beam is of a different wavelength, the relating being accomplished by establishing the laser beam which corresponds to each of the captured reflections based on the wavelength thereof.
33. An apparatus according to Claim 28, wherein each laser beam is projected at a different time, the relating being accomplished by establishing the laser beam which corresponds to the time at which each of the captured reflections is captured. For the Applicants, REINHOLD COHN AND PARTNERS 01653187\47-01
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL176196A IL176196A (en) | 2006-06-08 | 2006-06-08 | Method and apparatus for scanning a gemstone |
| ZA200605005A ZA200605005B (en) | 2006-06-08 | 2006-06-19 | Method and apparatus for scanning a gemstone |
| RU2006123099/22U RU61425U1 (en) | 2006-06-08 | 2006-06-29 | DEVICE FOR DETERMINING THE FORM OF A PRECIOUS STONE (OPTIONS) |
| CN200610101886.4A CN101086443A (en) | 2006-06-08 | 2006-07-12 | Device for determining precious stone shape |
| BE2006/0429A BE1017316A7 (en) | 2006-06-08 | 2006-08-11 | Method and apparatus for scanning gemstone, comprises platform adapted to support gemstone, scanning system adapted to provide geometrical information concerning three-dimensional convex envelope of gemstone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL176196A IL176196A (en) | 2006-06-08 | 2006-06-08 | Method and apparatus for scanning a gemstone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL176196A0 IL176196A0 (en) | 2007-08-19 |
| IL176196A true IL176196A (en) | 2010-04-15 |
Family
ID=37991196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL176196A IL176196A (en) | 2006-06-08 | 2006-06-08 | Method and apparatus for scanning a gemstone |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN101086443A (en) |
| BE (1) | BE1017316A7 (en) |
| IL (1) | IL176196A (en) |
| RU (1) | RU61425U1 (en) |
| ZA (1) | ZA200605005B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9188542B2 (en) | 2008-07-25 | 2015-11-17 | De Beers Uk Ltd. | Gemstone viewer |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2725348A1 (en) | 2012-10-29 | 2014-04-30 | Scientific Visual SARL | Optical quality control device |
| WO2014097298A2 (en) * | 2012-12-20 | 2014-06-26 | Sarine Technologies Ltd. | System for accurate 3d modeling of gemstones |
| EP3177910A4 (en) * | 2014-08-08 | 2018-03-14 | Empire Technology Development LLC | Spectroscopic determination of optical properties of gemstones |
| CN104931507B (en) * | 2015-06-05 | 2017-11-21 | 天津大学 | A kind of phone housing edge quality detecting system and detection method |
| BE1025522B1 (en) | 2017-09-01 | 2019-04-04 | Octonus Finland Oy | IMPROVED METHOD FOR CONTROLLING GRINDING OF GEMSTONES |
| KR102003729B1 (en) * | 2017-11-15 | 2019-07-29 | 주식회사 고영테크놀러지 | Inspection apparatus |
| CN108534836B (en) * | 2018-05-11 | 2020-01-14 | 武汉理工大学 | Automatic detection device and method for cylindrical rock sample |
| CN109099867A (en) * | 2018-06-26 | 2018-12-28 | 无锡新吉凯氏测量技术有限公司 | A kind of jewel certification and identifying system and method based on geometric shape information |
| CN112066910A (en) * | 2020-08-24 | 2020-12-11 | 昆明理工大学 | Monocular three-dimensional measurement system based on plane mirror automatic rotating platform |
-
2006
- 2006-06-08 IL IL176196A patent/IL176196A/en active IP Right Grant
- 2006-06-19 ZA ZA200605005A patent/ZA200605005B/en unknown
- 2006-06-29 RU RU2006123099/22U patent/RU61425U1/en active
- 2006-07-12 CN CN200610101886.4A patent/CN101086443A/en active Pending
- 2006-08-11 BE BE2006/0429A patent/BE1017316A7/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9188542B2 (en) | 2008-07-25 | 2015-11-17 | De Beers Uk Ltd. | Gemstone viewer |
| US9625393B2 (en) | 2008-07-25 | 2017-04-18 | De Beers Uk Ltd. | Gemstone viewer |
Also Published As
| Publication number | Publication date |
|---|---|
| RU61425U1 (en) | 2007-02-27 |
| ZA200605005B (en) | 2008-02-27 |
| BE1017316A7 (en) | 2008-06-03 |
| IL176196A0 (en) | 2007-08-19 |
| CN101086443A (en) | 2007-12-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FF | Patent granted | ||
| KB | Patent renewed | ||
| KB | Patent renewed | ||
| KB | Patent renewed | ||
| KB | Patent renewed |