Method and device for viewing diamonds and precious stones

 

The device includes a viewing platform (not shown) that includes enlightened box (10), which hosts the diamond or gemstone (14). The diamond or precious stone that can be cut precious stone, covered the first two light-emitting diodes (LED) (102, 106) having means (110, 112) of the lens, and the magnification projection system is installed at a relatively low level, the image of the whole or the greater part of at least one face of the diamond is displayed on the video monitor (40). At higher levels of magnification LED (102, 106) is turned off, and the Central LED (104) is switched to a diamond (14) was exposed to direct radiation, the position of the diamond (14) is adjusted until then, until the condition back reflections, which allows to consider the labels on the surface of a diamond or gemstone. The technical result is the ability to verify the quality of the stones under normal conditions indoors. 3 S. and 44 C.p. f-crystals, 5 Il.

According to the first aspect of the present invention made device for viewing diamond or gemstone that contains the tool diffuse lighting is the lighting of the diamond or precious stone direct radiation, viewer for forming an image of a diamond or gemstone with light diffuse radiation or directional emission and display device to display the specified image.

According to another aspect of the present invention a method of viewing a diamond or precious stone, including stage lighting diamond or gemstone diffuse radiation or directional radiation and the formation of the image of a diamond or gemstone in the coverage of the diamond or gemstone diffuse or directional radiation.

According to another aspect of the present invention made device for viewing diamond or precious stone, containing the means of illumination for lighting of a diamond or gemstone, the viewer, to form the image of a diamond or gemstone with light, the screen display to display the specified image, and the building, which has the means of lighting, the viewer and the display screen.

Moreover, according to the specified device to browse perform viewing the specified label, formed on the surface of a diamond or gemstone posledstviya is providing a preview of the label on the diamond or precious stone.

The invention is of practical interest when browsing the labels on the diamond or precious stone, while on the other hand, it is assumed that a diamond can be an industrial diamond, such as filler for drawing. In patent WO 97/03846 described method of applying labels to precious diamonds, these labels are preferably not visible to the naked eye or even eye using a magnifying glass with a tenfold increase, i.e., magnifying glass used by jewelers. Labels are applied by irradiation faceted gemstone ultraviolet laser using a projection mask, and the nature of the labels is such that they can be applied to the polished face of a precious stone without compromising their values or deterioration of its appearance. Labels are applied to the diamond or gemstone with no significant marks.

Labels may contain brand names, identification numbers or marks, bearing other information that relates to a precious stone, and in General it is necessary to provide a method and apparatus for quick and easy viewing of such labels, which can be used by jewelers in jewelry stores retail and traders brilliantly precious stone way which is easy to ensure that under normal lighting conditions indoors and which allows the seller to verify the quality of the stone and to ensure quality when viewing the label of the selected stone.

In patent WO 96/23207 described device for holding a color analysis of precious stones. However, in this technical solution is in contrast to the claimed invention is not provided, the image formation of the label, which is formed by removal of material, gemstone and which does not contain significant shades and also displays the label on the display screen.

The equivalents of the claimed technical solution also includes the device described in GB 1416568A, US 5515157, JP 59-141058, US 5526416 and US 5430538 describing checker precious stones. However, in contrast to the claimed technical solution, these tools are not provided by the application label no significant marks and display the specified tag.

Another objective of the claimed invention is the implementation of a device and method that provides a satisfactory view of the label on the diamond or precious stone. An additional objective of the claimed invention is the elimination of the above.

According to the first aspect of the present invention provides a device for viewing under paragraph 1 of the formula of the invention and the method according to paragraph 36 of the claims.

Paragraphs 1 and 36 use the term “diffuse radiation. For the avoidance of doubt, the term “diffuse radiation” refers to radiation that is irradiated diamond or gemstone with a relatively wide range of angles, such as angles, overlapping at least 20. On the other hand, the term “directed radiation” refers to radiation that is irradiated diamond or gemstone with a relatively narrow range of angles, such as angles, covering no more than 20preferably not more than 10. The tool diffuse lighting and vehicle directional radiation can be partially combined with each other, i.e. to have a single source of radiation.

The first image is preferably receive with the first zoom level and a second image preferably receives from the second magnification level, and the first zoom level is preferably lower than the second zoom level to display and the known radiation to the directional radiation for the detection of “labels”.

In the first embodiment can be provided by “plate”, which made at least one hole, for example, essentially in a Central location. The plate is positioned during exposure so that the precious stone was exposed to direct radiation through the hole. The cone and plate can be mutually replaceable, thus allowing a relatively small viewing unit. In other words, the cone and the plate can alternately be positioned within the path of radiation. The diffuser can be attached to or formed on the end plate having at least one hole to form a single optical element.

You can provide any convenient means for changing the magnification, for example a rotary knob having two or more predefined positions corresponding to two or more corresponding levels increase. In this case, the handle is connected with the rotary wheel bearing on a lot of magnifying lenses located on the perimeter. During rotation of the handle is a turning wheel, which allows you to place needed a magnifying lens or lenses in the path of the image. With one another is managing to enter a variable magnification. This allows the unit is relatively compact. As other alternative devices, you can use the optical device with variable magnification, which allows to obtain a continuous range of magnifications, or a fixed magnification and camera, which electronically changed magnification.

In the first embodiment, the means for changing the magnification level may be associated with an optical element which carries the lens, and the section formed with the diaphragm, so that the operation of the device changes increase leads to longitudinal movement of the optical element in order to move the diffuser in the path of radiation, if the zoom level is reduced, or move the partition is formed with at least one aperture in the path of radiation.

The device according to the first variant implementation of the present invention may include a number of different plates or sections, which are placed along the path of radiation. For example, as a diffuser, the device can also include a plate having at least one, usually located in the center of the aperture with point hole, and a plate having ognenii on the plate, so was there a source or sources oblique direct light for a precious stone. These sections should be interchangeable so that if necessary you could see the entire precious stone, a diffuser is placed on the trajectory of exposure if it is necessary to examine the label on the surface of the gemstone, the magnification level increases, and the gemstone is illuminated with a source of direct lighting, with the plate having a hole or holes is offset from the center, is used to provide angular or two symmetric corner light sources for gemstone detecting marks formed using a variety of channels, which have a diffraction effect in the fall of a light beam and causes a label with a specific color, for example blue. Two symmetric corner of the light source are preferred for more brightness. On the other hand, you can use more than two apertures.

When using the device of the present invention precious stone is first considered at a relatively low level of magnification used shall be suitable essentially the entire upper part (or another GM part) of the gemstone. The appearance of a precious stone much like the appearance of a precious stone under normal lighting conditions at the time of retail sale, just increased and allows the buyer to check the quality of the stone and to be sure that this is the really selected the stone, which gives the impression to the buyer. However, in the diffuse lighting label, as a rule, it is impossible to see and determine its location (due to its "invisibility").

Therefore, increase the zoom level, and, in the first embodiment, the diffuser is replaced by a point aperture. Then adjust the inclination of the rear face or other viewable front faces of the precious stone to get back reflection from the rear face or front face. Back reflection is a radiation that is reflected back along the path of the radiation. Under these conditions, the rear face or front face becomes bright and the image of the label appears in the form of dark spots, so the user detects the presence and position of the label.

The label can then be positioned essentially in the Central viewing position, and further, if necessary, can the tion by diffuse lighting the seller can see on the renderer view of a diamond or precious stone, corresponding to the real image. Using the same means and providing a second image through directional lighting, the seller can see the label, knowing that the label is on the same precious stone. Moreover, when using a direct reflection from the surface improves the image quality of the label depending on the type of marker, it is possible to browse the labels invisible to the naked eye, formed by removing material with a diamond or precious stone, and which contains no significant marks.

The means of exposure gemstone preferably contains one or more light sources such as light emitting diodes (LEDs), to ensure higher reliability, while LEDs usually have a longer lifetime in comparison with the known lighting lamps. Means of irradiation is more preferably one or more LEDs with white radiation so that in the case of a color camera to view the precious stone, the emission color of the LED does not affect the image and it was possible to achieve a real image of the face. The trajectory of the radiation should be essentially pipeline one LED positioned directly below considered the front face or the rear face. Prismatic beam splitter positioned in the path of the radiation, which allows the incident radiation to reach the question of the front face or the rear face, and directs the radiation reflected from the front face or the rear face in a means of focusing and viewing essentially at an angle of 90relative to the direction of incident radiation.

In the second embodiment, the first LED is positioned essentially at an angle of 90to the direction in which you want to illuminate the observed rear face or front face. Directed radiation from the first LED falls on the plate beam splitter that is positioned in the path of light, and is directed essentially at an angle of 90to inspect the front face or the rear face. Thus, the diamond or gemstone is again illuminated from below. With the two sides of the first LED has two additional LEDs, which are tilted inward (forward direction relative to the first LED, at an angle, for example, approximately 45). Two additional LED equipped diffusing plate. The first LED can be fitted with a lid with resp the stone or diamond direct radiation, include the first (or the Central LED), and the other two LED off. When required, diffuse radiation, the first LED off, and the other two LEDs include. The radiation reflected back from the diamond or gemstone, passes through plate resselaer beam and is reflected by the prism as a means of focusing and viewing.

Thus, the front face or the rear face of the gemstone of interest, can be lighted through the prismatic beam splitter, or more preferably through the plate beam splitter.

The viewer is preferably a camera that is connected to a video monitor or display to display the image, at least the viewable part of the precious stone. The screen is preferably within the same housing as other elements to form one compact, portable device. In a preferred embodiment, the video monitor may be flat LCD monitor display device, so that the whole device can be even more compact, portable and easy to handle.

According to the second aspect of the present invention, the device for viewing labels nasienia, at least part of the precious stone, the viewer, to obtain an image of at least part of the precious stone and the screen display device to obtain an image of at least part of the gemstone, and the means of lighting, the viewer and the screen of the display device are placed together inside the case.

The screen of the display device may be a liquid crystal display, a monitor screen or video monitor. The displayed image can be monochrome or, more preferably, a colour.

The method and apparatus according to the present invention can be used for quick and easy viewing of the labels on loose gemstones or gemstones, particularly diamonds, mounted in jewelry. In addition, the device of the present invention can be very compact and portable, and durable. This is further confirmed by the fact that the device according to the present invention requires only a power source of low voltage, for example, within 12 and 24 b, which can be supplied from the mains via an adapter (adaptor) or by batteries.

The device according to the second aspects is Oia, thus providing a compact and durable device for viewing, which can be used by the user to display the image of the precious stone at a relatively low magnification, so that the finished stone can check, for example, a prospective buyer, and then improve, increase, or change the way in which covers a precious stone in order to display the part of the precious stone, which is "invisible" tag.

The preferred implementation of the

Variant implementation of the present invention will be described below through an example and with reference to the accompanying drawings, in which:

Fig.1 depicts a diagram of a device for viewing according to the first variant implementation of the present invention; and

Fig.2 depicts a diagram of the device (Fig.1), having an alternate means of changing the magnification;

Fig.3 depicts a diagram of a second variant implementation of the present invention; and

Fig.4 shows a General front view of the device for viewing according to the present invention and

Fig.5 depicts the device (Fig.4) with the holding arm, which is located in a position suitable for its use.

As GIP stone, which includes enlightened box 10. The viewing platform can in General contain flat "place", which is mounted in the device by a relatively loose gimbal, which you can tilt or swing manually in all directions, and which remains in its position when released. It is also possible for some linear motion. Enlightened box 10 contains a small, essentially transparent piece of glass, each side of which is coated while the light beam is not reflected back from the window. The box 10 is preferably installed with the possibility of removal within the aperture in the viewing platform. On the other hand, you can perform a separate mounting part for receiving the window, and the fixing part is installed with the possibility of removal in or on the viewing platform. Enlightened box 10 is presumably so that it can be replaced if it is damaged or contaminated during use.

The LED 12 is made to illuminate at least part of the precious stone 14 through the prismatic beam splitter 16 beam.

View precious stone is performed by a CCD (device with charge n splitter beam 16 and the mirror 20. The increase in the obtained image can be changed by the rotary device 22 changes increase, contains many pairs of magnifying lenses 24a, 24b, located opposite each other at equal distances around the perimeter of the round swivel casters 26. The rotation of the wheel 26 allows you to set the desired magnifying lenses 24A, 24b on the path between the camera 18 and prismatic beam splitter 16 beam to achieve the desired magnification of the image. You can also include a focusing lens 28 in the path of the image between the device 22 changes increase and the beam splitter 16 beam, and a focusing lens 28 is moved in the directions shown in order to increase the resolution of the received image. Additional roaming magnifying lenses 30, 32 are also provided in the present embodiment, with the lens located in the path of the image on either side of the mirror 20 and is moved in and out of the path of the image if necessary.

The device is made with a diffuser 36 and a narrow aperture 38, which are interchangeable. (Of Fig.1, 2 and 3 the size of the narrow aperture and the angular width of the beam is shown in an enlarged view.) In the shown Ariane 34 in the path of the light between the beam splitter beam 16 and the LED 12. It is obvious that the plate 34 may include one or more additional sections (not shown) with different placements of the diaphragms.

Thus, as mentioned above, if the mark is with many strokes, which have diffraction effect in the fall of radiation, it is possible to perform the section that includes the offset from the center aperture or two diaphragms on each side in the Central provisions of the section. In this case, one or two narrow aperture are placed in a track lighting, effectively operate as one or two angular light source for gemstone. The angle of the source or sources of light (i.e., the position of the diaphragm or diaphragms) are chosen according to color, which is required for the visual appearance of the label. Thus, if necessary for detection of the label in blue color aperture or diaphragm is positioned so that the angle resulting from the incident radiation, met blue dragirovaniya light. Similarly, the angle, the resulting directional source or light sources can be chosen to match the red dragirovaniya light and detect the distance between dashes in the label. However, if this is known, it is clear that a number of different angular directional light sources can be made available through the implementation of a number of different sections, each of which has one offset from the center aperture or two diaphragm, positioned on each side of the Central position, and the hole of each section is positioned in accordance with the color that is necessary for the appearance of the label. Thus, the user can choose the color in which the label is visually appear for a buyer.

The video monitor 40 is connected to the camera 18 to display the image(s) obtained with the camera.

While using precious stone 14 is positioned on the viewing platform (not shown) with his marked face opposite the enlightened window 10. Different interchangeable holders can be attached to the viewing platform for loose stones or various other types of jewelry, such as rings, necklaces, bracelets and others. For example, you can perform a holder for rings (not shown) containing a cylindrical shape horizontal element, which is mounted above the viewing platform ment and the stone was turned down. You can also perform a bracket or clamp, which you can throw a necklace or bracelet so that you can verify their stone (stones).

Preferably, a gemstone or piece of jewelry was placed in the lower position of the face at the window (if the label is on the verge) to facilitate the location of the stone or guarantee that the inverse reflection installs quickly. However, you can use an alternate location.

Marked face is illuminated through the prism beam splitter 16 beam with LED 12, and the trajectory of light essentially perpendicular to a face of the diamond or the other of the considered face.

First inspect a precious stone 14 at a relatively low level of magnification diffuser 36, located in the path of the light. The position and orientation of the stone 14 regulate and, if necessary, also adjust the focusing lens 28, so that you can see on the video monitor 40 of the rear face or other labeled front face. However, when diffuse light is impossible to see or to determine the location of the label.

Therefore, the increase increase by rotation of the wheel 26, changing a couple of magnifying lenses 24A, 24b, the cat is 36 to narrow the aperture 38. In a preferred embodiment, the device 22 changes increase and the plate 34, the bearing cone 36 and a small aperture 38, interact with each other in such a way that when you turn the device 22 changes increase the plate 34 is driven in the longitudinal direction in order to replace the diffuser 36 to narrow the aperture 38 located in the path of the light, or Vice versa. The rotation device 22 changes increase may also lead to the displacement of a floating magnifying lenses 30, 32 in (or from) the trajectory of the image if necessary.

The inclination of the rear face of the diamond or other observable face side adjust with manual tilting, rocking, or move the viewing platform to get back reflection from the facets of a diamond or face to face diamond or face became bright, although the label appears as a dark spot, thus identifying the existence and position of the label for the user.

Immediately after identifying the image labels can be center of the video monitor 40 via linear movement of a viewing platform and can further increase the magnification so that you smotrina instead of the rotating device 22 (Fig.1). The means 50 changes increase contains many lenses 52, which have different levels of magnification. Lenses provided on the linear movable base 54, which can move the user's hand (not shown) and is available outside the viewing device. Using a rolling mechanism to change the zoom, you can run the device as a whole more compact compared to the rotary device shown in Fig.1.

As shown in Fig.3, the second variant implementation of the viewing device of the present invention is quite similar in many respects to the first variant of the invention, therefore, the same positions are used to indicate similar elements. The main difference between the first and second variants of the implementation is to use in the second embodiment, a plate beam splitter 100 beam instead of a prism beam splitter and the position of the source(s) of light. Another important difference lies in the fact that the plate 34 having the screen 36 of the lens and the aperture 38, is missing in the second embodiment.

In the embodiment (Fig.3) there are three LEDs 102, 104, 106, and plate beam splitter 100 of the beam, R is the reflected from the diamond 14, passes through the beam splitter 100 beam to the prism 108, which directs light orthogonal to the viewer.

Central LED 104 is intended for illumination of the diamond 14 direct radiation and it may have a lid with a hole (not shown) to limit the angular divergence of the radiation. The other two LEDs 102, 106 are angled upward with respect to the Central LED 104 (as shown), and each of these two LED 102, 106 are made with diffuser 110, 112.

The principle of operation of the device according to the second variant implementation is essentially the same as the principle of operation according to the first variant implementation. However, at the stage where the diamond 14 highlights the Central LED 104, the LED 102, 106 is turned off. When you want to highlight the diamond 14 diffuse radiation, the Central LED 104 is turned off, and the other two LED 102, 106 is enabled.

The advantage of using a plate-type beam splitter, as in the second embodiment, instead of a prism beam splitter, is that it eliminates the deterioration of the image caused spurious internal reflections of light.

As shown in Fig.4 and 5, the device for viewing, according to the first or second variante and the cover 154, to lie essentially flush with its inner surface. In one embodiment, the screen 156 can be rotated at least along one axis, but in the preferred embodiment, the screen 156 is fixed and rotary table (not shown) provided on the lower surface portion 152 of the base so that the entire unit can be easily turned.

Switch "on/off" button 158 is provided in the portion 152 of the base. You can also include means (not shown) to adjust light, contrast and brightness of the observed image. This means of adjustment can be accomplished in part 152 of the base or the cover 154 next to the screen 156.

The tool 160 external changes increase is made in part 152 of the base and also provides a tool 162 external focus.

A viewing platform 164 is mounted on the portion 152 of the base so that it can be manually shake or tilt it to adjust the position of the diamond 14 during use of the device. A viewing platform 164 includes a rotary plate 165 so that you can change the orientation of the scanned diamond or precious stone. Swivel plate 165 bears promotora is shifted in a downward direction, so while using it could be lifted for placement of a portion of jewelry (not shown) on enlightened box 10, and then released so that it exerted downward pressure on the diamond, which will verify, and maintain it in a certain place. The rear face or front face of the diamond, which will verify that you want to keep essentially parallel to the plane of the enlightened window 10.

Other means for holding the parts of the jewelry in the provision made in the form of a mechanical arm 170, which is mounted to rotate on a viewing platform 164 to ensure that in the case when not in use, it could be at the bottom front of the viewing platform (Fig.4) and could be rotated essentially in a vertical position during use (Fig.5). Mechanical arm 170 is made with a fastener 172 to capture part of jewelry or gemstone to hold it in a fixed position. The mechanical hand is again the surface of a gemstone, which will check, essentially parallel to the enlightened box 10.

Throughout the description and claims the word "contains", "containing" and p is non, that is, in the sense of "including, but not limited it."

The present invention described above only by means of example, and modifications can be made within the invention, which extends to equivalents of the described features.

Although the present invention is mainly intended for testing precious stones and, in particular, faceted gemstone, it is also suitable for testing of industrial diamonds.

Claims

1. Device for viewing diamond or gemstone (14) containing medium (36 or 102, 106) diffuse illumination for lighting of a diamond or gemstone (14) diffuse radiation, means(38 or 104) directional lighting for illumination of a diamond or gemstone (14) directional radiation means (28, 22, 30, 32 or 28, 50) for forming images of a diamond or gemstone (14), illuminated diffuse radiation or by directed radiation, and means (40 or 156) display to display the specified image characterized in that the device view provides a view of the marks formed on the surface of a diamond or gemstone, the tool (28, Mota or precious stone in the lighting diffuse radiation, and the second image in the reflection of radiation from a given surface when illuminated by a directional radiation and at least part of the specified surface on which is formed the specified label, and the means (40 or 156) display to display the specified image provides an image of the specified first and second images.

2. Device for viewing on p. 1, wherein all blocks of the device are included in a single housing (150).

3. Device for viewing diamond or precious stone (14), containing the means (36, 38 or 102, 104, 106) lighting of the diamond or precious stone (14), means (28, 22, 30, 32 or 28, 50) for forming images of a diamond or gemstone (14) when illuminated, the screen (156) display the specified image, and the casing (150), in which the tool is installed (36, 38 or 102, 104, 106) of the lighting means (28, 22, 30, 32 or 28, 50) view screen (156) display, characterized in that the device view provides a view of the marks formed on the surface of a diamond or gemstone, the tool (28, 22, 30, 32 or 28, 50) view provides for the formation of the enlarged image of at least part of the specified surface of a diamond or dragocennij preceding paragraphs, characterized in that the means (28, 22, 30, 32 or 28, 50) view provides for the formation of reflection through multiple reflections.

5. Device for viewing according to any one of the preceding paragraphs, characterized in that it contains a beam splitter (16) of the beam to direct the radiation from the means of illumination on a surface viewable diamond or precious stone.

6. Device for viewing according to any one of the preceding paragraphs, characterized in that the tool diffuse lighting contains at least two sources (102, 106) lighting, and the sources (102, 106) lighting are angled so that their trajectories lighting overlap at least partially.

7. Device for viewing according to any one of paragraphs.1, or 2, or 4-6, wherein the configured so that the tool directional lighting is switched off when the vehicle diffuse lighting is enabled, and means diffuse lighting is switched off when the vehicle directional lighting is on.

8. Device for viewing according to any one of the preceding paragraphs, wherein the lighting facility for imaging by direct reflection contains an opaque screen (34), which is recorded during use thus the diamond or gemstone (14) is illuminated through the aperture (38) generally normal to a given surface.

9. Device for viewing according to any one of paragraphs.1-7, characterized in that the lighting facility for imaging by reflection contains an opaque screen, which is formed with two diaphragms arranged in the screen on each side from its normal Central position, while the surface is illuminated by rays, essentially under the same angle to the normal to a given surface, while when observing normal to a given surface, essentially in opposite directions.

10. Device for viewing according to any one of paragraphs.1-7, characterized in that the lighting facility for imaging by reflection contains an opaque screen, which is formed with one that is offset from the Central aperture, with a specified surface can light beam at an angle to the normal to a given surface.

11. Device for viewing according to any one of paragraphs.8-10, characterized in that the opaque screen has specified the Central aperture, the two diaphragms and the specified aperture is offset from the center, where the device the mouth of the th Central aperture, these two apertures and the aperture is offset from the center.

12. The device for viewing in one of the paragraphs.1-7, characterized in that the lighting facility for imaging by reflection contains an opaque screen, which formed lots of diaphragms.

13. The device for viewing in one of the paragraphs.1, or 2, or 4 to 12, characterized in that one light source (12) is included in the means (36) diffuse lighting and a means (38) directional lighting.

14. Device for viewing according to any one of the preceding paragraphs, characterized in that it contains means (22 or 50) to change the magnification by which examined the specified diamond or precious stone.

15. Device for viewing under item 14, characterized in that the means (22) to change the zoom level contains the rotary wheel (26), with many located along the perimeter of the magnifying lenses (24A, 24b).

16. Device for viewing under item 14, characterized in that the means for changing the magnification level contains system with variable magnification of the image containing a fixed magnification and camera with electronic image magnification.

the t many lenses (52) and means for moving the lens in a horizontal direction relative to the respective light path.

18. The device for viewing in one of the paragraphs.14-17, characterized in that the means for changing the magnification associated with the specified tool diffuse lighting and vehicle directional lighting, with the specified appropriate lighting facility operates at change the zoom to a predefined level.

19. Device for viewing under item 18, characterized in that the first image formed with the first magnification and the specified second image formed from the second than the first zoom ratio.

20. Device for viewing under item 19, characterized in that the first zoom ratio is lower than the second zoom ratio.

21. Device for viewing according to any one of the preceding paragraphs, characterized in that it contains a moving viewing platform (10) for placement of a diamond or gemstone (14), and the location of the diamond or gemstone (14) relative to the trajectory of light is adjusted by moving said platform (10).

22. Device for viewing according to any one of the preceding paragraphs, characterized in that it contains a viewing platform (10), at least part of which includes a transparent window view on p. 22, characterized in that on the reverse side of the transparent window applied ar coating.

24. Device for viewing on any of the previous paragraphs.21-23, characterized in that a viewing platform (10) is mounted by a universal suspension with the ability to tilt and move the viewing platform you are using.

25. Device for viewing according to any one of paragraphs.21-24, characterized in that a viewing platform (10) includes a rotary plate with the possibility of changing the orientation of the diamond or precious stone around the axis of the view.

26. Device for viewing according to any one of the preceding paragraphs, characterized in that it contains means for holding the diamond or precious stone (14).

27. Device for viewing according to any one of the preceding paragraphs, wherein the lighting facility contains at least one light-emitting diode (12 or 102, 104, 106) of white light.

28. Device for viewing according to any one of the preceding paragraphs, characterized in that the viewer has a camera (18).

29. Device for viewing according to any one of the preceding paragraphs, characterized in that the display device or display screen includes a video monitor (40 or 156).

30. Ustroystvo monitor.

31. Device for viewing according to any one of paragraphs.2, 3, or 4-30, characterized in that the casing (150) includes a cover (154) attached to the base (152), and the means of display or screen display (156) are installed in or on the cover (154).

32. Device for viewing according to any one of paragraphs.2-31, characterized in that the means of display or screen display (156) is rotated relative to the housing (150).

33. Device for viewing according to any one of paragraphs.2-32, characterized in that it contains the rotary table on the bottom surface of the housing (150) to rotate the housing relative to the surface on which it is installed.

34. The device for viewing in one of the preceding paragraphs, characterized in that carries out image formation of the label, which is invisible, and displays the mark on the screen or the screen display.

35. The device for viewing in one of the preceding paragraphs, characterized in that performs image formation marks formed on the surface of a diamond or precious stone, by removing material of the diamond or precious stone, in this case the label does not contain shades, it has a display of labels on the vehicle show or E. the strain on the surface of a diamond or gemstone (14), carry out the image formation of the label and display the indicated marks on the screen (156) display.

37. The way you view the diamond or precious stone (14), including the lighting of the diamond or gemstone diffuse radiation or directional radiation and the image formation on the diamond or gemstone with diffuse or directional lighting, characterized in that the method provides a preview of the label, formed on the surface of a diamond or gemstone (14), includes the following steps: illuminate at least a portion of a specified surface of a diamond or gemstone (14) diffuse radiation, light, at least part of the specified surface directional radiation, to form a first image of at least part of this surface with diffuse lighting and by reflection from this surface by directional lighting form a second image of at least part of the specified surface on which is formed the label, and shall display the first and second image while the second image includes a label.

38. The method according to p. 37, wherein forming the first image is performed with the first step>/p>39. The method according to 38, wherein the first zoom ratio is lower than the second zoom level.

40. The method according to one of paragraphs.37-39, wherein when the lighting of the diamond or gemstone (14) diffuse radiation shall display all of the at least one of the facets of a diamond or gemstone (14).

41. The method according to one of paragraphs.37-40, characterized in that it includes regulation of the position of the diamond or gemstone (14) relative to the trajectory of the lighting with the ability to display a label and display faces with the specified label.

42. The method according to p. 41, characterized in that the position of the diamond or gemstone is adjustable for receiving reflections.

43. The method according to one of the p. 41 or 42, characterized in that the diamond or gemstone is set on a mobile viewing platform (10), while the position of the diamond or gemstone adjusted relative to the path of light by moving a viewing platform (10).

44. The method according to one of paragraphs.37-43, wherein the gemstone is a precious diamond.

45. The method according to one of paragraphs.37-44, wherein the tag is invisible to the naked eye and the image formation tragicomic fact, that mark is formed on the surface of a diamond or precious stone by removing material of the diamond or precious stone, and contains no significant marks and when image formation is a direct reflection of the label is displayed on the screen or the screen display.

47. The method according to one of paragraphs.37-46, wherein the implementation of the above method is carried out using a device according to PP.2 and 4-36.

 

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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

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 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

The finisher // 2016672
The invention relates to the sorting of crystals

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

FIELD: technology for processing diamonds into brilliants.

SUBSTANCE: 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.

EFFECT: possible objective measurement and numeric estimation of brilliants glow charm, and possible certification of them on basis of glow charm.

5 cl, 22 dwg, 11 tbl

FIELD: investigating or analyzing materials.

SUBSTANCE: 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.

EFFECT: reduced sizes and simplified method of testing.

47 cl, 9 dwg

FIELD: registration of absorption spectra of small luminescent specimens.

SUBSTANCE: 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.

EFFECT: expanded functional potentialities due to the increase of the range of specimens suitable for measurements without special preparation of them.

5 dwg

FIELD: measuring technique.

SUBSTANCE: 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.

EFFECT: ability of automatic precise evaluation.

44 cl, 10 dwg

Scope // 2300095

FIELD: visual scope of mark onto face of precious stone.

SUBSTANCE: 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.

EFFECT: simplicity at use; improved comfort.

38 cl, 4 dwg

FIELD: laser machine for analysis, grading and marking-out of untreated diamond.

SUBSTANCE: 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.

EFFECT: saved material and time, and enhanced capacity.

30 cl, 15 dwg

FIELD: physics.

SUBSTANCE: 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.

EFFECT: laser inscription of permanent point marks inside precious stones.

40 cl, 14 dwg

FIELD: mining.

SUBSTANCE: 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.

EFFECT: improved authenticity of identification of a personalised diamond.

1 ex, 3 dwg

FIELD: physics.

SUBSTANCE: 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.

EFFECT: design of a mobile compact device for selecting diamond crystals, related to types IIa and IIb, and IaB, from rough diamonds or cut diamonds, suitable for decolouring and quality improvement through thermobaric processing.

2 cl, 2 dwg

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