| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 356030000 | CRYSTAL OR GEM EXAMINATION | 44 |
| 20080204705 | APPARATUS AND METHOD FOR COLOR MEASUREMENT AND COLOR GRADING OF DIAMONDS, GEMSTONES AND THE LIKE - The present invention discloses an apparatus and method for color measurement and color grading of faceted gemstones, diamonds and the like. The apparatus comprises a spectrometer, a computer, and a dual integrating sphere measurement arrangement comprising a measurement integrating sphere, a sample integrating sphere, a sample platform, a filter, a lens system, a baffle and a light source. The measurement geometry of the dual integrating sphere measurement arrangement is diffuse illumination and 8 degree viewing with the specular component excluded, plus diffuse white background provided by the sample integrating sphere. The sample integrating sphere encloses a sample to provide a constant environment for simulating the visual color grading environment. A novel three-step calibration insures an accurate spectral measurement of the sample inside the measurement integrating sphere. The computer controls the spectrometer and provides measurement parameters calculated from the physical parameters of the measured sample, including, but not limited to, shape, dimensions, refractive index, intensity of fluorescence and cut grade. The computer then calculates the spectral reflectance and calorimetric data, and determines an average color grade by checking a look-up-table that represents the relationship between the CIELAB coordinate and the average color grade. The computer also determines a true color grade based upon the average color grade and the physical parameters, using mathematical analyses and algorithms. | 08-28-2008 |
| 20080218730 | Methods, Apparatus, and Systems for Evaluating Gemstones - Methods for grading gemstones, apparatus for grading gemstones, and systems that utilize such methods and apparatus are disclosed. | 09-11-2008 |
| 20080225265 | METHOD AND APPARATUS FOR FINDING MACROMOLECULE CRYSTALLIZATION CONDITIONS - A system and method for determining macromolecule crystallization conditions by measuring the polarization anisotropy of a fluorescent probe attached to the macromolecule in solution as a function of a variation in crystallization conditions. In one exemplary embodiment, the concentration of the macromolecule material is varied and the polarization anisotropy as a function of concentration gives an indication of the proximity to crystallization conditions. A pulse illumination system with time gated detection is disclosed to isolate fluorescence response from excitation to reduce noise due to scattered and reflected light. A microassay system is disclosed to allow a complete 96 condition screen with less than 1 micro-liter of solution. | 09-18-2008 |
| 20080225266 | GEMSTONE VIEWING METHODS AND APPARATUS - A viewing apparatus for viewing a surface of a gemstone comprising an adjustable platform with a surface adapted to receive the gemstone is disclosed. The apparatus includes a viewing axis along which the gemstone is viewed, a light source to emit light substantially parallel to the viewing axis, and an adjustment mechanism having misalignment indicators, arranged to provide three or more visually distinguishable zones around the viewing axis. The adjustment mechanism also has three or more adjustment indicators positioned relative to the platform and the misalignment indicators, where the adjustment indicators are associated with the visually distinguishable zones such that an image viewed along the viewing axis of one of the zones reflected from the surface of the gemstone provides an indication of which way to adjust the platform relative to the viewing axis to make the surface of the gemstone perpendicular to the viewing axis. | 09-18-2008 |
| 20080231833 | Method for evaluation of a gemstone - An apparatus for determining location of at least one inclusion in a gemstone having a first refractive index, comprising:
| 09-25-2008 |
| 20090051897 | Method and Apparatus for Identifying and Characterizing Objects based on Fluorescence - A method and apparatus for characterizing objects. The method includes the steps of illuminating the object with incident red light having at least some wavelengths between 620 nms and 650 nms and detecting red light fluorescence from said object having a wavelength greater than visible wavelengths greater than that of the incident wavelengths, for example by using a filter. An apparatus including a source of red incident light, a detector for longer wavelength fluorescent light and a means for physically removing the detected objects from the rest is also provided. An embodiment of the present invention may be used in a mine, for example, to separate gem stones from less valuable ore rock or in prospecting to detect the presence of gems. In this embodiment the detection is not possible with the naked eye alone. | 02-26-2009 |
| 20090147241 | Method for evaluation of a gemstone - A method of determining the position of inclusions in a gemstone, comprising: | 06-11-2009 |
| 20090153835 | Systems and Methods for the Evaluation of Scintillation in Gemstones - Systems and methods, for the evaluation, grading, and presentation of evaluation results, of the scintillation of gemstones, such as diamonds. Specifically, there are discussed systems and methods for determining when a scintillation event in a gemstone is likely to occur and for mapping such events to a presentation. | 06-18-2009 |
| 20090180100 | Engraved gemstone viewer - The present invention is an engraved gemstone viewer for viewing a smooth surface of a gemstone that has been micro or nano etched, engraved or embossed with an inscription such as an identification number. The gemstone is mounted on a piece of jewelry or can remain unmounted when received by the viewer. A source of light directs a light beam toward a magnifying lens coated with a reflection enhancing coating. The lens reflects the light beam along a path incident to the surface of the gemstone containing the inscription. The smooth gemstone surface specularly reflects the light beam along a path back toward the magnifying lens, which produces a viewable light image that reveals the inscription. The inscription is shown as a combination of darkened or lightened areas, lines and characters given the reduction or absence of light reflected, or highlighted by the reflection of light. | 07-16-2009 |
| 20090290141 | Matched pairs of gemstones - A system is provided for certifying two or more gemstones as being a matched pair. The system includes measuring values for at least four physical properties of a multiplicity of gemstones, identifying a first gemstone, a second gemstone, and optionally still further gemstones all being within match tolerances of the respective measured values, and certifying in a single certificate that based on the match tolerances, the gemstones constitute a matched set. Also disclosed is jewelry and a process for creating jewelry based on the certification system. | 11-26-2009 |
| 20100026985 | RETAIL COMPATIBLE DETECTION OF CVD GROWN DIAMOND - A system includes a radiation source to provide short wavelength light. A holder positions a table of a gemstone to receive the light. A detector is positioned to receive fluorescent light from the gemstone when the gemstone is a CVD grown gemstone. | 02-04-2010 |
| 20100053596 | Crystallographic orientation measurement - A method is disclosed for measuring the crystallographic orientation of a component cast by a directional solidification process. The method comprises the steps of: illuminating at least a region of the component surface with substantially coherent light, measuring the mean angle and intensity of the light reflected from the component surface, and correlating said mean angle and intensity to the crystallographic orientation of the component. The method has been found to lend itself particularly well to automation. | 03-04-2010 |
| 20100053597 | DETECTION OF CHEMICAL VAPOR DEPOSITION GROWN DIAMOND - Diamonds may be identified as grown by the use of chemical vapor deposition. One or more diamonds may be placed on a surface and exposed to short wavelength light. Diamonds that fluoresce red may be identified as grown by the use of chemical vapor deposition. In some embodiments, the diamonds are cooled prior to exposure to the short wavelength light. | 03-04-2010 |
| 20100128253 | METHOD FOR DETECTING THE DIAMETER OF A SINGLE CRYSTAL AND SINGLE CRYSTAL PULLING APPARATUS - The invention is a method for detecting the diameter of a single crystal grown by the Czochralski method, wherein the diameter of a single crystal is detected by both a camera and a load cell, the diameter detected by the camera is corrected based on a difference between the diameter detected by the camera and the diameter calculated by the load cell and a correction coefficient α obtained in advance according to a growth rate of the single crystal, and a value obtained by the correction is set as the diameter of the single crystal, and a single crystal pulling apparatus including both a camera and a load cell for detecting the diameter of a single crystal to be pulled upwardly. As a result, it is possible to improve the measurement accuracy of the diameter of a large-diameter, heavy crystal and achieve the enhancement of yields and a reduction in variations in quality. | 05-27-2010 |
| 20100141929 | APPARATUS AND METHOD FOR COLOR MEASUREMENT AND COLOR GRADING OF DIAMONDS, GEMSTONES, AND THE LIKE - The present invention discloses method for color measurement and color grading of faceted gemstones, diamonds and the like. A novel three-step calibration insures an accurate spectral measurement of the sample inside the measurement integrating sphere. Using the method of the present invention, a computer provides measurement parameters calculated from the physical parameters of the measured sample, including, but not limited to, shape, dimensions, refractive index, intensity of fluorescence and cut grade. By means of the present invention, a computer then calculates the spectral reflectance and colorimetric data, and determines an average color grade by checking a look-up-table that represents the relationship between the CIELAB coordinate and the average color grade, and it also determines a true color grade based upon the average color grade and the physical parameters, using mathematical analyses and algorithms. | 06-10-2010 |
| 20100220310 | Fast UV-VIS-NIR absorption spectrometer system and method - A method and system for evaluating a colored gem stone which has been cooled to below a designated temperature are provided. The system includes a cooling unit configured to support and cool a gem stone to below a desired temperature, an electromagnetic radiation source, a spectrometer, an integrating sphere, and a processing unit. The method includes receiving a spectral response of the colored gem stone and sampling a noise component within a range of wavelengths in the spectral response so as to make a baseline determination. The method further includes ascertaining a presence of at least one designated peak within the range of wavelengths as a function of the baseline determination, and evaluating the presence of each of the at least one designated peaks so as to provide an indication of whether the colored gem stone requires further evaluation. | 09-02-2010 |
| 20100220311 | Method and apparatus for rapidly cooling a gem, including two stage cooling - A cooling apparatus includes a container configured to contain a coolant within a space. The apparatus further includes a cooling block positioned substantially within the space and having a high heat capacity such that the space not occupied by the cooling block is filled with a coolant to a level at or below the top of the cooling block, and a placement structure having high thermal conductivity positioned on top of the cooling block and outside of the space. A method for cooling an object is also provided, which includes inserting a coolant into a container configured to contain the coolant within a space, and placing the object on a placement structure outside the space. For this method, the placement structure has a high thermal conductivity and is coupled to a cooling block, the cooling block having a high heat capacity and positioned substantially within the space. A two-stage cooling apparatus and method is also described. | 09-02-2010 |
| 20110205525 | ARRANGEMENT FOR AND METHOD OF HOLDING GEMSTONES - A gemstone to be optically examined is held by a holder having an internal compartment. A mounting plate supports the gemstone table-side up in an upright position within the internal compartment. A protective lid is mounted on the holder for movement between a closed position in which the lid overlies the mounting plate and the gemstone supported thereon, and an open position in which the lid uncovers the gemstone for optical examination. | 08-25-2011 |
| 20120170019 | DETECTION OF CHEMICAL VAPOR DEPOSITION GROWN DIAMOND - Diamonds may be identified as grown by the use of chemical vapor deposition. One or more diamonds may be placed on a surface and exposed to short wavelength light. Diamonds that fluoresce red may be identified as grown by the use of chemical vapor deposition. In some embodiments, the diamonds are cooled prior to exposure to the short wavelength light. | 07-05-2012 |
| 20120242977 | RETAIL COMPATIBLE DETECTION OF CVD GROWN DIAMOND - A system includes a radiation source to provide short wavelength light. A holder positions a table of a gemstone to receive the light. A detector is positioned to receive fluorescent light from the gemstone when the gemstone is a CVD grown gemstone. | 09-27-2012 |
| 20120268728 | GEM POSITIONING AND ANALYSIS SYSTEM - A gemstone positioning and analysis system is disclosed for measuring various characteristics of a gemstone. The system includes a narrow band spectrophotometer that allows the authenticity of the gemstone to be determined along with other characteristics of the gemstone. A clear mounting plate is also included that has a series of markings to facilitate centering the gemstone within an analysis chamber. An alignment device is included that has at least one linear pusher and is adapted to automatically center the gemstone at the centermost point of the clear mounting plate. | 10-25-2012 |
| 20130010280 | GEMSTONE REGISTRATION SYSTEM - A device for producing a reproducible identification pattern of a polished gemstone includes light directing means for directing a focused beam of light onto a gemstone orientated in a particular known manner to produce an output of the internal refraction and reflection characteristics of the gemstone including reflected light beams having particular locations, sizes and intensities. The device also includes automated means for changing a position of the gemstone relative to the focused beam of light; and also a means for recording the output in a manner to record the relative size and location of the reflected light beams. | 01-10-2013 |
| 20130038859 | REFLECTED DARK FIELD METHOD AND APPARATUS - A reflected dark field structure includes a bottom plate, a support tube, a light unit, a diffuser structure, and a reflector unit that provides reflected dark field illumination, such that a gem held by the support tube and surrounded by the diffuser structure is illuminated and viewable through an aperture in the reflector unit. A method for imaging and analyzing a gem includes placing the gem onto a support tube where it is illuminated with dark field and reflected dark field illumination, and viewing the gem via an aperture located on a top reflector unit, which provides a top cover for the gem. Furthermore, a method and apparatus for obtaining images of a gem includes a dark field stage, a reflector unit, and an image-acquiring device, such that a gem placed in the dark field stage is illuminated, and such that the reflector unit covers the dark field stage and provides reflected dark field illumination, and such that the image-acquiring device is directed towards an aperture in the reflector unit. | 02-14-2013 |
| 20130057848 | IMAGING CRYSTALLINE DOMAINS OF SMALL MOLECULES - An apparatus and method for performing volume scanning of a sample comprised of chiral materials disposed in a matrix of non-chiral materials is disclosed. A laser is raster scanned in a plane of the volume such that the intensity of energy in the focal region is sufficient to generate second harmonic (SHG) energy. This energy is detected and may be processed into three dimensional images of the volume. The raster pattern is repeatedly stepped over an area of the sample so as to produce three dimensional images of time-dependent processes. | 03-07-2013 |
| 20130321792 | UNIVERSAL TOOL FOR AUTOMATED GEM AND MINERAL IDENTIFICATION AND MEASUREMENT - A tool employs Raman spectroscopy, optical imaging, physical measurements, smart software applications, and custom databases for automated on-site gem and mineral identification, measurement, and authenticity verification. Operators with no technical expertise can perform on-site, fast, nondestructive gem and mineral characterization. A custom smart application for data handling and processing enables applicability with a variety of processors. Automated generation of Raman spectral signatures and subsequent correlation to spectral fingerprints of known materials enables gem and mineral identification and verification in field settings. A single tool provides high resolution digital optical imaging and physical measurement capabilities, enables comprehensive sample characterization and reporting that currently requires multiple tools and significant labor. The Tool also provides the capability for sample analysis, requiring an additional level of technical expertise, to be done remotely at another location by the transmission of the data via a communications link. A rechargeable battery pack is included. | 12-05-2013 |
| 20130329212 | Imaging System - An imaging system may be collect information related to a specific gemstone such that a user may later access those images in a manner that allows the user to emulate a microscope. The illustrative embodiment of the imaging system may allow a subject gemstone to be rotated by 360 degrees in yaw, pitch, and roll dimensions relative to an image capture device, and the linear distance between the image capture device and the subject gemstone to be adjusted. The illustrative embodiment of the image capture device may record images of the subject gemstone at a plurality of focal points in three-dimensional space from a plurality of angles. A viewer system may be used to access images for a specific gemstone. | 12-12-2013 |
| 20140063485 | GEMSTONE REGISTRATION SYSTEM AND SYSTEM FOR EVALUATING THE QUALITY OF A GEMSTONE CUT - A computer-implemented system is provided and includes a processor and a memory accessible by the processor, with the system being configured to measure light performance properties of a gemstone and generate an objective grade for the gemstone. The gemstone is analyzed with respect to a light return property, an optical symmetry property and a scintillation property of the gemstone and an objective grade for each is generated. | 03-06-2014 |
| 20140104595 | DEVICE FOR MEASURING PROPERTIES OF SCATTERERS - An apparatus for measuring properties of scatterers includes: a paraboloidal mirror or a paraboloidal screen; a specimen platform configured to support the scatterer on a focal point of the paraboloidal mirror or the paraboloidal screen; a generator operable to generate an electromagnetic wave having a predetermined wavelength distribution, wherein the generator is configured and positioned to direct the electromagnetic wave directly at the scatterer from all directions above a plane which includes the focal point; an imaging means for imaging, as planar images, scattering waves which are generated by the scatterer upon receiving the electromagnetic wave directly from the generator, and which are then reflected off the paraboloidal mirror or projected onto the paraboloidal screen; and a conversion means for converting the planar images into scattered light distribution information which includes both azimuth and elevation angle information of the scattering waves. | 04-17-2014 |
| 20140253906 | Imaging System - An imaging system may be collect information related to a specific gemstone such that a user may later access those images in a manner that allows the user to emulate a microscope. The illustrative embodiment of the imaging system may allow a subject gemstone to be rotated by 360 degrees in yaw, pitch, and roll dimensions relative to an image capture device, and the linear distance between the image capture device and the subject gemstone to be adjusted. The illustrative embodiment of the image capture device may record images of the subject gemstone at a plurality of focal points in three-dimensional space from a plurality of angles. A viewer system may be used to access images for a specific gemstone. | 09-11-2014 |
| 20150022801 | COMPUTER-IMPLEMENTED METHOD OF AND SYSTEM FOR TEACHING AN UNTRAINED OBSERVER TO EVALUATE A GEMSTONE - A computer-implemented method teaches a user to evaluate a gemstone, such as a cut diamond. The method includes providing a computer system connected to an apparatus capable of capturing an image of a gemstone. The computer system is arranged to process a received image of a gemstone to determine one or more optical properties of the gemstone. In one aspect, the method presents on a display of the computer system a series of pre-stored screens comprising a graphical representation how the cut of a gemstone affects its light handling ability, and a user interface screen. The user interface screen allows the user to control the operation of the apparatus to measure the one or more optical properties of a particular gemstone provided to the apparatus, to view an image of the gemstone measured, and to view representations of the measured one or more optical properties. | 01-22-2015 |
| 20150109606 | PLASMONIC PHOTOTRANSISTOR - A plasmonic phototransistor includes a photon to surface-plasmon-polariton (SPP) transducer including and an optical coupling structure configured to receive incident light and an electrically conducting layer having a first and a second surface. The second surface is on the optical coupling structure and the first surface generates SPPs responsive to the incident light. A gate dielectric layer is on the first surface. A two dimensional (2D) electrically conductive material is on the gate dielectric layer having electrical properties sensitive to electromagnetic fields of the SPP. Source and drain contacts are on the 2D electrically conductive material. Dynamic electric fields of the SPPs reach the 2D electrically conductive material that are operable to electric field-induce modulation of an electrical conductance of the 2D electrically conductive material which is sensed from the source and drain contacts. | 04-23-2015 |
| 20150346108 | Gemstone Registration and Recovery System, and Systems for Evaluating the Light Performance of a Gemstone and Capturing Forensic Characteristics of a Gemstone - A computer-implemented system is provided and includes a processor and a memory accessible by the processor, with the system being configured to measure light performance properties of a gemstone and generate an objective grade for the gemstone. | 12-03-2015 |
| 20160003795 | GEM TESTER - A gem tester for testing a gem under test and a kit including a horizontal recharging stand are disclosed. In one embodiment of the gem tester, an elongated body has a line-of-sight contour tapering from a bulbous end to a radially deviating frontal nose having a probe extending therefrom. Internal circuitry measures electrical and thermal conductivity of the gem under test in order to identify the type of gem under test and drive a color control signal in response thereto. A luminescent mounting extends about the contact to provide, in response to the control signal, a color indication of the identified gem type. | 01-07-2016 |
| 20160025643 | GEMSTONE REGISTRATION SYSTEM - A device for producing a reproducible identification pattern of a polished gemstone includes light directing means for directing a focused beam of light onto a gemstone orientated in a particular known manner to produce an output of the internal refraction and reflection characteristics of the gemstone including reflected light beams having particular locations, sizes and intensities. The device also includes automated means for changing a position of the gemstone relative to the focused beam of light; and also a means for recording the output in a manner to record the relative size and location of the reflected light beams. | 01-28-2016 |
| 20160041106 | GEMSTONE VIEWER - An apparatus for viewing images of a gemstone is described. The apparatus comprises a support structure for supporting the gemstone at an observation position. An illumination structure comprises a plurality of directional light sources directed towards the observation position so as to illuminate the gemstone. The support structure and illumination structure are relatively rotatable relative to one another about a rotation axis. An imaging device is arranged to obtain images of the gemstone at the observation position at a variety of relative rotational positions between the illumination structure and support structure: the imaging device has an imaging axis passing through the observation position. The support structure is arranged so that the gemstone can be placed at the observation position in such a way that the normal to a selected facet of the gemstone is within a range of tilt angles from the rotation axis. The arrangement of directional light sources is such that, for any tilt angle within the range, at least one of the directional light sources will be specularly reflected from the selected facet into the imaging device for at least one rotational position of the support structure. | 02-11-2016 |
| 20160047756 | METHOD FOR MEASURING PATTERNED SAPPHIRE SUBSTRATE - An optical measuring method for measuring the surface of a patterned sapphire substrate is provided. The method has the following steps: using an automated optical inspection procedure to check the surface of the patterned sapphire substrate and define a non-defective area and a defective area; providing a light source to emit a first light beam; making the first light beam pass through an optical fiber connector and an optical probe, and focus on a measurement focal point defined on the surface of the patterned sapphire substrate. The measurement focal point is disposed on the non-defective area. The optical probe has a pinhole disposed opposite the measurement focal point. The first light beam is emitted into the pinhole. The pinhole and the measurement focal point are conjugated. | 02-18-2016 |
| 20160103078 | GEMSTONE SPARKLE ANALYSIS - A system is described for obtaining images of a gemstone, and performing quantitative analysis on the images to obtain measures of properties of the gemstone. The system comprises a support structure for supporting the gemstone at an observation position. An illumination structure is arranged to illuminate the gemstone. The illumination structure comprises a plurality of radially dispersed directional light sources directed towards the observation position, the support structure and illumination system being rotatable relative to one another around a rotation axis so that the gemstone can be illuminated by one or more of the directional light sources at each of a plurality of rotational positions, the axis of rotation being normal to a selected facet of the gemstone. An imaging device is directed towards the gemstone for obtaining images of the gemstone at each of the rotational positions, the imaging device having an imaging axis parallel to or coincident with the axis of rotation. An image processor is provided for identifying sparkle regions in the images corresponding to reflections from individual light sources by individual facets and providing a quantitative measure of the gemstone on the basis of properties of the sparkle regions. | 04-14-2016 |
| 20160109373 | EXAMINATION METHOD TO APPRAIS CORUNDUM THAT HAS UNDERGONE BERYLLIUM DIFFUSION TREATMENT - This invention is within the technical field of corundum appraisal, and it involves an examination method to determine whether corundum has undergone beryllium diffusion treatment. Procedurally, a highly sensitive Raman spectrometer (S/N>10,000) is used to scan and examine the samples. The spectrometer is fitted with a tailor-made probe having a large facula and surface area. Specially developed software is then used to perform an intensity correction and a background elimination to obtain a specific Raman spectral range (250-120 cm-1) with the corrected intensity and a smooth baseline. The corrected and standardized Raman characteristic peak at 804 cm-1 (side-band) is used as a basis to determine whether the corundum has undergone beryllium diffusion treatment. This invention method has the advantages of being non-destructive, simple, fast, and practical. Also, it can accurately determine whether corundum has been treated. | 04-21-2016 |
| 20160109374 | EXAMINATION METHOD FOR DISTINGUISHING BETWEEN NATURAL DIAMOND AND SYNTHETIC CVD/HPHT DIAMONDS - This invention is within the technical field of distinguishing between natural diamond and synthetic CVD and HPHT diamonds, involves an examination technique using the Raman spectra. Procedurally, a highly sensitive Raman spectrometer (S/N>10,000) is used to scan and examine the diamond sample. The spectrometer is fitted with a tailor-made probe that has a large facula and surface area. Specially developed software is then used to perform an intensity correction and a background elimination to obtain a specific Raman spectral range (250-2800 cm | 04-21-2016 |
| 20160123797 | METHOD OF MEASURING CHARACTERISTICS OF CRYSTAL UNIT - A method of measuring characteristics of a crystal unit, includes: driving a crystal unit having a cover transmitting light, a crystal substrate, a first excitation electrode disposed on a first surface of the crystal substrate facing the cover, and a second excitation electrode disposed on a second surface of the crystal substrate opposite to the first surface; irradiating light to the first excitation electrode through the cover in the driving state of the crystal unit; and measuring vibration characteristics of the crystal unit based on reflected light obtained from the irradiated light. | 05-05-2016 |
| 20160139058 | METHOD AND DEVICE FOR GEMSTONE EVOLUTION - The present invention relates to the method and device to determination of the properties of gemstones and more particularly evolution of gemstone by detection of internal and external structure of gemstone. In particular, the present invention methods and device is used to identify the size, location of impurities/defects in raw gemstone with the help of optimize spectroscopy scanning. The present invention method and device is used for precise automatic evolution of gemstones and possibilities (estimation) of final value of planned gemstone after remaining gemstone processing cycle. | 05-19-2016 |
| 20160161421 | ASSEMBLY FOR ANALYZING A LIGHT PATTERN CAUSED BY REFRACTION AND REFLECTION AT A PRECIOUS STONE - The invention relates to an assembly ( | 06-09-2016 |
| 20170234805 | MOBILE GEMSTONE IDENTIFICATION | 08-17-2017 |
| 356031000 | Axes determination | 1 |
| 20110299063 | Device For Measuring Properties Of Scatterers , For Color Measuring For Scattered Light Of Gemstones, For Measuring Brightness Of Gemstones, And For Measuring Luminescence Distribution - A device for measuring properties of scatterers which measures properties of a scatterer from a stereoscopic scattering distribution of the scatterer upon receiving an electromagnetic wave with a certain wavelength distribution is provided. In the device, a scatterer to be measured is placed on a specimen platform; the electromagnetic wave is irradiated onto the scatterer from at least either any one or more directions, or one or more continuous directions of a hypothetical spherical surface having the above-mentioned focal point as its center; scattering waves scattered by the scatterer and reflected off the paraboloidal mirror or projected onto the paraboloidal screen are imaged by the imaging means as planar imaging data; and from thus obtained imaging data, a stereoscopic distribution of the scattering waves generated by the scatterer is obtained so as to measure properties of the scatterer from the distribution result. | 12-08-2011 |
