Method of localization of inclusions in diamond |
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IPC classes for russian patent Method of localization of inclusions in diamond (RU 2263304):
          
 The way the diamonds detection using coherent anti-stokes raman spectroscopy and device for its implementation / 2180108
The invention relates to the field of spectral analysis of diamonds
 Check diamond / 2175125
The invention relates to a method of checking printed on natural diamond layer of synthetic diamond and to a device for implementing the method
 The method of determining the safety of diamonds in the technological processes of processing / 2075067
The invention relates to the beneficiation of minerals, and in particular to methods of assessing the safety of diamonds in the processes of extraction and processing
 Device for screening crystals / 2067758
The invention relates to means for sorting minerals and can be used mainly for screening crystals with a pair of parallel faces, for example having the shape of a cube, octahedron, parallelepiped and t
 The method of determining the position of a defect in a transparent stone / 2054656
The invention relates to the field of processing transparent stones mainly with a higher refractive index, for example diamonds, and in particular to methods of determining the position of the defect in crystals and blanks after various technological operations, may find application in the production study and sorting stones, preparations and products from them
 Method of localization of inclusions in diamond / 2263304
Diamond is fixed onto holder and tested under specified angle for getting image. Then second measurement is made for getting two sets of data calculated by means of computer. The second set of data can be received by means of measurement of depth or due to changing direction of viewing.
 Method for estimating attractiveness of brilliant glow on basis of charm coefficient / 2264614
In the method, by experimental or calculation-theoretic way in glow images visible to observer optical characteristics of diamond glow are determined, including glow intensiveness, glow glimmer and color saturation of glow, characterized by level of decomposition of white color on rainbow colors, and also relief coefficient of glow, characterized by average number of intensive color spots in glow image, distinctive to human eye, and additionally, by dividing glow image on compound portions, average values of glow intensiveness of compound portions are measured. Optical characteristics of glow are transformed to glow factors. As average coefficient of brilliant glow charm, which is used to estimate brilliant glow charm, charm coefficient is used, calculated as average value of factors of intensiveness, glimmering, color saturation and glow image geometry.
 Method and device for testing precious stones / 2267774
Device comprises housing provided with solid body laser connected with the window in the heat insulating tank filled with liquid nitrogen and provided with the precious stone, semiconductor laser connected with the window, two spectrometers for detecting luminescence in the range of 550-10000 nm, and processor for processing signals from the spectrometers.
 Method for registration of absorption spectra of small luminescent specimens / 2281478
The absorption spectrum of small luminescent specimens is determined according to relation of intensities of light fluxes that have passed and not passed through the specimen, the luminescence of the standard specimen is used as the specimen through which the radiation flux has not passed, and the luminescence of the examined is used as the specimen through which the radiation flux has passed, and the absorption spectrum of the examined specimen is calculated according to the respective mathematical formula.
 Evaluation of diamond's quality / 2287804
To determine if green-blue was subject ct to artificial irradiation or to ion bombardment, it is irradiated with light at wavelength of 633 nm for stimulation of luminescence emission, and luminescence is detected within range of 680 to 800 nm by using confocal microscope and spectrometer. Focal plane is canned in vertical along diamond. Quick reduction in luminescence accompanied with increase in depth points at natural illumination while even quicker reduction points at ion bombardment. Alternatively, to determine if diamond has to be natural/synthetic doublet, diamond is subject to irradiation at wavelength of 325 nm to stimulate emission of luminescence and luminescence is detected within 330-450 nm range. Sharp change in luminescence at increase of depth points at the fact that the diamond has to be natural/synthetic doublet.
 Scope / 2300095
Device for observing information mark on face 7 of precious stone 6 is made in form of casing 1 for jewelry. Casing 1 for jewelry has substrate 2 to keep ring 5 with precious stone 6 on top of it and rotating cap 3. Rotating cap 3 has opening 15 in its top part; opening has 10x lens 16, that's why when cap 3 is open and turned by 30° angle, face of 7 of precious stone can be seen through lens 18. Moreover precious stone is illuminated by light that enters casing through slot formed when cap is opened. Light falls onto face slantwise and is regularly reflected through lens 16. Scope can be used for internal and external observation.
 Laser machine for analysis, grading and marking-out of untreated diamond / 2314197
The machine has a laser scanning device, three-dimensional scanning system, matrix, masking device, electronic unit and a computer program for analysis of the diamond weight and characteristics of the brilliant or brilliants that can be obtained from an untreated diamond.
 Method and system for laser marking precious stones, such as diamonds / 2357870
Present invention relates to the method and system for laser marking precious stones and, particularly to the method and system for engraving authentication codes. In the system for laser marking precious stones such as diamonds, marks consist of several microscopic dots, increase of which can be initiated upon effect on natural internal defects or impurities inside the precious stone of a strictly focused laser pulse sequence. The marks are inscribed by laser pulses, carrying significantly less energy than threshold energy required for inscription inside ideal material of precious stone. The method of laser marking and encryption takes into account random spatial distribution of defects, present in natural precious stones, as well as their much localised character. Authentication data are encrypted in the precious stone in the relative spatial arrangement of dots which form a mark. Dots, engraved under the surface of the precious stone, can be made undetectable to the naked eye and a magnifier through limiting their individual size to several micrometres. The mark can be detected using a special optical reading device.
 Personalised grown gem diamond / 2372286
Invention relates to artificail gem diamonds identifiable with a certain person or animal. A personalised gem diamond is grown from a charge that includes carbon being a product of carbonisation of the material provided by the customer, powder of spectroscopically pure graphite and a marker for which at least two elements are used that are selected from a lanthanide group and taken in a arbitrarily prescribed ratio to the extent between 0.01 to 10 mcg /g.
 Device for sorting diamonds / 2372607
Invention relates to devices which use ultraviolet radiation for testing objects, and is meant for sorting diamonds and, particularly for selecting diamonds from natural rough diamonds and cut diamonds with brown hue, where the selected diamonds are suitable for high-temperature processing at high pressure for decolouring, more specifically, type IIa and IIb, and IaB diamond crystals. A light-emitting diode with radiation peak in the wavelength range from 240 to 300 nm is used as the ultraviolet radiation source, and the detector of radiation transmitted through the tested diamond crystal is a photodiode. The electric signal from the photodiode is amplified with a converting amplifier. Intensity of radiation transmitted through the tested diamond crystal is indicated using a measuring device and in parallel using an indicator with operation threshold. The light-emitting diode is placed in a holder with a table. A narrow central hole is made in the table in order to pass radiation from the light-emitting diode. The tested diamond crystal is placed on the table, while completely covering this hole. The diametre of this hole is made smaller than typical dimensions of the tested diamond crystal. The photodiode is placed into the holder with possibility of changing its position relative the tested diamond crystal and possibility of fixing its vertical position, in line with the hole in the table, using a special detachable cover for the said table.
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FIELD: testing of precious stones. SUBSTANCE: diamond is fixed onto holder and tested under specified angle for getting image. Then second measurement is made for getting two sets of data calculated by means of computer. The second set of data can be received by means of measurement of depth or due to changing direction of viewing. EFFECT: improved precision of localization. 6 cl, 2 dwg
The invention relates to a method and apparatus for localization of the inclusions in the diamond. Up to the present time to determine inclusions in diamonds used several ways (GB 2081439, US 4152069), and they all have disadvantages associated with the difficulty of localization of the inclusions with respect to the outer surface of the diamond. Mainly, can be obtained two-dimensional image of the diamond, which will lead to inaccurate localization of such inclusions. The purpose of the invention is to overcome the aforementioned disadvantages, and the method according to the invention is characterized by the fact that the diamond is fixed on the holder, specified the diamond in the holder investigate (measured) at a predefined angle to get the image, then perform the second measurement to obtain two sets of data, calculated on a computer, for localization of the inclusion relative to the outer surface of the specified diamond. According to the first variant implementation of the invention, the method also differs in that the diamond is fixed on the holder, with the specified diamond carrier detect under a predefined angle to obtain the reference image, then perform the change of direction, which carried out the study of the diamond at least once to get the changes, while image data of EIT is it in the computer to calculate a three-dimensional image, including one or each time relative to the reference. After making a clear localization of the inclusion relative to the outer surface of the diamond indicated the diamond can be easily cut on the optimal plane is computed using a computer. Specified the optimal plane passes through the inclusion so that when cut diamond inclusion disappears. Although the viewing direction relative to the diamond can be realized by changing the position of the scanner, and so forth, according to the invention it is easier to do a rotation and/or movement of the holder with the diamond in relation to the fixed direction of observation. In addition, one of the purposes of the invention consists in the introduction of the correction coefficient associated with the refractive index of diamond, which should be taken into account when calculating, in the case where the scanning direction deviates from the direction of observation perpendicular to the surface of the diamond. For a simpler implementation of accurate localization and/or determine the volume of the inclusions in the diamond, you can use the optical cylinder, the diameter and the direction of detection is used for calculation on the computer. According to another implementation variant of the invention, the inclusion can be localized using the scanner with the device on which I focus, to obtain depth positions along the specified direction of observation by focusing specified inclusion. The invention is illustrated by the following description of embodiments of the invention, which consists in the localization of the inclusions in the diamond. The drawings show: figure 1 is a perspective view of embodiments of the invention, illustrating the scanning of the diamond in the holder; on figa, b, C, D is a schematic representation of the successive stages of a preferred method according to the invention. 1 shows a housing 1, which contains the holder 2 on which is fixed diamond D. Via a suitable actuator can be rotation of the holder and/or the movement of a holder for placing the diamond on the optical axis A, which is the optical axis of the projection light beam 7 is projected through a diamond on a semi-permeable mirror, reflecting the image of the diamond on the microscope and/or camera 3 and the scanner 4. When projecting light it is possible to set the holder 2 in the correct position relative to the scale of the microscope manually performed by the operator. The scanner 4 is used to obtain the necessary data for the specified image and use the data in calculations on the computer. Figure 2 presents the implementation of n is how many stages of implementation of the method according to the invention. a) Carry out the fixation of the diamond on the table and set the scanner 4 from the outer surface of the stone in an arbitrary initial position. The coordinates of this position - X0, Y0, Z0that α0that β0that γ0. i) Carry out the rotation of the stone to make the necessary inclusion visible through a microscope (with changing the eyepiece). b) Carry out the move included in the position before the scale of the microscope. The operator is investigating the stone through the microscope, makes it, adjusting table. Made the move X1, Y1, Z1and rotation α1that β1that γ1diamond on the table record based on its initial position. Determine the face (in her normal α1that β1that γ1), through which the inclusion is visible. Single cylinder (or line) so that the inclusion was within the specified cylinder (or met the specified line). The same procedure (stages a and b) carry out several different positions c) Various locations see or browse through the different facets of a diamond, or browsing through the same face, but in different directions. Register a different set of displacements and rotations: X2...Xn, Y2...Yn, Z2...Znthat α2...αnthat β2...β nthat γ2...γn. d) the location of the inclusions within the diamond is calculated from registered displacements and rotations, scanning the outer surface and the refractive index of diamond. The position of the inclusion is defined as the nearest point of intersection of lines or cylinders created in stage b. Glyph of turn 8 is projected in the scanned image. The invention is not limited to the above method. For example, the crosshair (scale) of the microscope, you can replace the "coordinate map, thereby avoiding displacement of the holder in each viewing direction. 1. The method of localization of inclusions in diamond (D), in which the fixing of the diamond in the holder (2), carry out a study of the diamond (D) on the holder in the original position to obtain an image of the outer surface of the specified diamond, with registration of coordinates (X0, Y0, Z0that α0that β0that γ0) initial position, characterized in that conduct a study of inclusions in diamond, at least in first and second directions of observation, at least in the first and second position with coordinates (X1, Y1, Z1that α1that β1that γ1) (X2, Y2, Z2that α2, β2that γ2these coordinates are fed into the computer to implement the localization of the inclusion (8) with respect to the outer surface of the specified diamond (D). 2. The method according to claim 1, characterized in that the carry rotation and/or displacement of the holder (2) diamond (D) to ensure the direction of observation. 3. The method according to claim 1 or 2, characterized in that when the deviation of the direction of observation of the 90° relative to the surface of the diamond impose corrective coefficient which is a function of the refractive index of the diamond when carrying out calculations by computer. 4. The method according to any of the preceding paragraphs, characterized in that the direction of viewing is such that the inclusion or each time (8) is enclosed in an optical cylinder, diameter and direction detection which is used when carrying out calculations by computer. 5. The method of localization of inclusions in diamond (D), in which the fixing of the diamond in the holder (2), carry out a study of the diamond (D) on the holder in the direction of observation to obtain an image of the outer surface of the specified diamond, characterized in that for obtaining depth positions along the direction of observation of the diamond by focusing specified inclusion (8) use the scanner (4) with the focusing means, the ri data position and depth of the images are fed into the computer for the localization of the inclusion (8) relative to the outer surface of the specified diamond (D).
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