CN108896546A - A kind of grading automatical measuring device of diamond color - Google Patents
A kind of grading automatical measuring device of diamond color Download PDFInfo
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- CN108896546A CN108896546A CN201810329708.XA CN201810329708A CN108896546A CN 108896546 A CN108896546 A CN 108896546A CN 201810329708 A CN201810329708 A CN 201810329708A CN 108896546 A CN108896546 A CN 108896546A
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- 239000010432 diamond Substances 0.000 title claims abstract description 52
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 51
- 238000001228 spectrum Methods 0.000 claims abstract description 13
- 238000004364 calculation method Methods 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000010354 integration Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000012545 processing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 6
- 239000004575 stone Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000036651 mood Effects 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 241000160767 Erebia epipsodea Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000004456 color vision Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 230000004438 eyesight Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000000691 measurement method Methods 0.000 description 1
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- 230000008447 perception Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- 230000016776 visual perception Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/87—Investigating jewels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Spectrometry And Color Measurement (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A kind of grading automatical measuring device of diamond color, including micro- microcell positioning system and spectrum automatic data acquisition and calculation system, micro- microcell positioning system includes V-type sample cell and blank, blank side is provided with light source, zoom and focusing camera lens is provided with right above blank, right above zoom and focusing camera lens and one piece of semi-permeable and semi-reflecting mirror is respectively set in side, and the semi-permeable and semi-reflecting mirror top right above zoom and focusing camera lens is provided with CCD detector；The light of another piece of semi-permeable and semi-reflecting mirror reflection is transmitted to spectrometer by signal receiver and signal wire, and the output end of spectrometer is connected with signal processing computer.Apparatus of the present invention use micro- microcell positioning measurement, select the measured zone of tested diamond common feature, can eliminate mutually homochromy grade diamond color difference due to caused by size.The device can fast and accurately measure the color coordinates of diamond, and be automatically converted to the corresponding color grading rank of diamond grading system.
Description
Technical field
The invention belongs to diamond color classification technique fields, are related to a kind of grading automatical measuring device of diamond color.
Background technique
The specific method of diamond color classification is that sample has been demarcated the other standard round bur type diamond mark of color level with a set of
Sample（7-10）Carry out visual colorimetric determination.Color grading personnel requirement is that colour vision is normal, has received the profession of technical skill training
Personnel, age were advisable at 20~50 years old.When colorimetric will by the color grading of two or more the same diamonds of technical staff's complete independently,
And obtain unified result.
Working region requires to be muted color, i.e. white, black or grey, in addition to this had better not there is other colors.
Including tables and chairs, wall, ground, curtain in room, the dressing of staff, the color even colour of skin of glasses all have color grading
It influences.
The irradiation of other light in addition to classification standard sources, darkroom or half dark reality should be avoided in light working region
Testing room is ideal color grading environment.Other require working region should also be clean, clean and tidy, quiet, safe, to be classified people
Member can carry out the work without single devotion.
Diamond color classification at present relies primarily on artificial estimation, and error is larger.Examined personnel to the sensitivity of color,
It is affected to the memory capability of color, or even understands the influence of the physical strength situation, degree of fatigue, mood of examined personnel, therefore
Human error is larger, the same sample same person usually occurs under identical environment, inspection result, which occurs, in different time to be had
The case where relatively large deviation.
Overwhelming majority diamond color measurement methods at present, sample message take is to put tested diamond sample
It is placed in integrating sphere window, the table top of the main irradiating sample of light, light is after diamond sample surface reflection by table in integrating sphere
The diffusing reflection in face injects detector and carries out data acquisition.Spectrometer as Liu Lab. company produces is a kind of typical integral
Formula measuring instrument.Pertinent literature：
Y. Liu, Apparatus and method for color measurement and color grading of
diamonds, gemstones and the like, US Patent No. 7,652,755, 2010.
Y. Liu, Method and system for color grading of gemstones, US Patent No.
7,388,656, 2008.
The new industrial research of color of gemstones measurement<China University of Geosciences>, 2007, Master's thesis, Wang Rong.
This to irradiate sample using light, the integrated ball diffusion mode of reflection light collects the measurement of measured signal
Method is widely adopted in color measuring field.But in this acquisition mode and visual diamond color grade colorimetric evaluation observation condition
Defined view mode has differences, and due to the difference of this observation condition, causes the difference of measurement result.This requires designs
Person carries out system amendment to its system, and the modified method of system and precision influence whether the precision of its measurement result.
In recent years, the automatic measurement system of international and domestic more and more diamond colors comes into being.Method for automatic measurement
Advantage be its have well measurement repdocutbility, do not influenced by external environment and mood and mood.However measuring instrument
The repeatability of device can not fully meet the demand of color measuring, it is often more important that the result of apparatus measures must satisfy human eye and
Perception of the brain to color.This is to say, the measurement result of instrument must be close to the visual perception of human eye.This human eye vision is seen
The condition of examining includes：Good sample is polished, for sample in the case where white diffuses background, radiation source colour temperature is D65 light source, the light
Ultraviolet spectra appropriate is contained in source, needed when observing sample to the vertical direction pavilion portion of sample and waist each region into
Row observation, and be averaged using measurement data of the different observers to these points as measurement result.
Summary of the invention
The present invention conventional diamond color grading there are aiming at the problem that propose a kind of novel grading automatical survey of diamond color
Measure device.
In order to achieve the above object, the present invention is realized using following technical solutions：
A kind of grading automatical measuring device of diamond color, including micro- microcell positioning system and spectrum automatic data acquisition and calculation system,
Micro- microcell positioning system includes V-type sample cell and blank, and blank side is provided with light source, is provided with zoom tune right above blank
Zoom lens, right above zoom and focusing camera lens and side are respectively set one piece of semi-permeable and semi-reflecting mirror, right above zoom and focusing camera lens
Semi-permeable and semi-reflecting mirror top is provided with CCD detector；The light of another piece of semi-permeable and semi-reflecting mirror reflection by signal receiver and
Signal wire is transmitted to spectrometer, and the output end of spectrometer is connected with signal processing computer.
Preferably, the V-type sample cell is fixed on adjustable two dimension platform.
Preferably, two pieces of semi-permeable and semi-reflecting mirrors are arranged in parallel, and with horizontal plane angle at 45 °.
Preferably, CCD detector, zoom and focusing camera lens, semi-permeable and semi-reflecting mirror are fixed by general frame, it is whole
Frame is fixed on iron stand by screwing screw.
Preferably, the display of micro- microcell positioning system uses MV31 software.
Preferably, spectrum automatic data acquisition and calculation system uses UV5000 software.
Preferably, light source uses D65 light source.
Preferably, blank is two pieces be separately provided.
Preferably, spectrometer develops integration tool windows desktop application program using Microsoft Windows VC, VC.
Compared with prior art, the advantages and positive effects of the present invention are：
1. the design of apparatus of the present invention is based on tradition, visually diamond color grade colorimetric evaluates observation condition, guarantees measurement result and people
The result of eye color grading is consistent.Using micro- microcell positioning measurement, the measured zone of tested diamond common feature, energy are selected
It is enough to eliminate mutually homochromy grade diamond color difference due to caused by size.The device can fast and accurately measure diamond
Color coordinates, and it is automatically converted to the corresponding color grading rank of diamond grading system.
2. the device further includes with the sample acquisition system for meeting visual diamond color grade colorimetric lighting condition and observation condition
System, micro- microcell locating and displaying system, spectrum automatic data acquisition and calculation system.
3. being calculated using the visual diamond color grade colorimetric lighting condition of tradition and observation condition in conjunction with the color of cie color
Method carries out acquisition, analysis and the calculating of spectrum to diamond, provides and meets visual diamond grading color evaluation result.
4. the diamond pavilion portion measured zone with common feature is selected, right using the accurate positioning device of micro- microcell
When different size of diamond measures, so that measured point measuring condition（Such as light path）Unanimously, mutually homochromy grade diamond is eliminated due to size
Color difference caused by size guarantees that analysis result is consistent.
5. reducing the systematic error of measuring system as scaling point using continuous sequence colorimetric stone grade, guarantee and visual
The consistency of diamond color grade colorimetric evaluation color result.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention, and Fig. 2 is micro- microcell positioning system surface chart, and Fig. 3 is that spectrum is automatic
Computing system surface chart is acquired, Fig. 4 is that tested diamond color color grade demarcates exemplary diagram.
Each appended drawing reference is：1. CCD detector；2. zoom and focusing camera lens；3. spectrometer；4. semi-permeable and semi-reflecting mirror；5. sample
Product；6. light source；7.V type sample cell；8. adjustable two dimension platform；9. locating and displaying device；10. signal wire；11. signal processing computer.
Specific embodiment
To better understand the objects, features and advantages of the present invention, right combined with specific embodiments below
The present invention is described further.It should be noted that in the absence of conflict, the spy in embodiments herein and embodiment
Sign can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other modes described herein are different from, therefore, the present invention is not limited to the specific of specification is described below
The limitation of embodiment.
Embodiment 1, the present embodiment provides the specific structures of device, as shown in Figure 1, mainly including micro- microcell positioning system
Two system, spectrum automatic data acquisition and calculation system parts.Micro- microcell positioning system includes V-type sample cell 7 and blank, V-type sample
Slot 7 is fixed on adjustable two dimension platform 8, and 5 side of sample is provided with light source 6, is provided with zoom and focusing camera lens 2 right above sample,
The surface and side of zoom and focusing camera lens 2 are respectively equipped with one piece of semi-permeable and semi-reflecting mirror 4, this two pieces of semi-permeable and semi-reflecting mirrors are set in parallel
Set, and with horizontal plane angle at 45 °, CCD detector 1 is set above the semi-permeable and semi-reflecting mirror of the top of zoom and focusing camera lens 2.CCD
Detector 1, zoom and focusing camera lens 2, semi-permeable and semi-reflecting mirror 4 are fixed by a general frame, then lead to general frame
Screwing screw is crossed to be fixed on iron stand and can move up and down.The output end of CCD detector 1 connects locating and displaying device 9；It is another
The light of block semi-permeable and semi-reflecting mirror reflection is transmitted to spectrometer 3, the output end of spectrometer 3 by signal receiver and signal wire 10
Connection signal handles computer 11.Spectrum automatic data acquisition and calculation system mainly includes 11 two parts of spectrometer 3 and signal processing computer.
Micro- microcell locating and displaying system uses MV31 software, program interface as shown in Fig. 2, entire window by menu bar with
And image display field two parts composition.It include microcell signal acquisition, position accurate positioning, microcell using micro- microcell signal acquisition
Signal framing is shown.When measuring different size of diamond, the diamond pavilion portion region with same characteristic features can accurately be selected to go forward side by side
The accurate positioning of row collection point.Identical to the acquisition condition of different size diamond sample to guarantee, test result is not big by diamond
Small influence.The measuring signal for acquiring standard colorimetric stone pavilion portion same characteristic features region simultaneously, can accurately determine system
Mark, to guarantee the accuracy of measured value.Its color coordinates measurement accuracy guarantees（x,y 0.0003）In the range of.
Spectrum automatic data acquisition and calculation system uses UV5000 software, and program interface is as shown in figure 3, be divided into six parts：By
Title bar, menu bar, parameter setting column, spectrogram display field, color calculate column and measurement control button composition.
1. light source concrete model and design requirement.
Radiation source 6 uses D65 light source.D65 light source is most common alpine light in standard sources, according to international lighting
Learn the requirement of CIE, the colour temperature of D65 light source is 6500K ± 200K, also requires its colour rendering index>96, it just can guarantee in D65 light
When observing article under source, light is not partially blue or partially red.So common triphosphor tube light can not meet this requirement, D65 fluorescent tube
The fluorescent coating for inside needing multilayer has been even up to the effect of 7 color sunlights.
The present embodiment uses the cold light source of Nanjing Baoguang Insprection Technology Co., Ltd.'s production, 50 W of power, multi-row linear row
The export of column optical fiber, generates flat light source, light source is uniform, empty calory；Light source power is constant current mode, and luminous intensity is stablized.
2. the specification of blank is arranged.
Using standard GB/T/T 9086《Standard white plate for coloration and optical measurement》The powder standard white of defined
Plate（It is suppressed with powder body material magnesia, barium sulfate, polytetrafluoroethylene (PTFE) etc.）, spectral reflectance is 95% or more, to visible
The absorption of light is in neutrality.
It totally two pieces of the present embodiment standard white plate, is placed in above the V-groove of fixed angle, can relatively move, so that by
Sample can facilitate rotation, to carry out the observation on each surface of sample.
3. spectrometer specification and model.
Integration tool windows desktop application program is developed using Microsoft Windows VC, VC；Software it is mountable
Windows XP, Win7, Win10 platform environment；Spectrum automatic data acquisition and calculation system uses UV5000 software systems, sample surfaces
The acquisition of color signal realized by the slim back lighting type CCD fiber spectrometer of AvaSpec-ULS2048XL that Avantes is produced,
Its advantage is that sensitivity and signal-to-noise ratio are higher.Specific model and parameter request are as follows：
4. device workflow.
As shown in Figure 1, pressing following flow operations：
A. it is tested diamond sample 5 to be placed in V-shaped groove 7, by adjusting adjustable two dimension platform 8, so that being located at the brill in V-shaped groove 7
5 pavilion portion region of stone sample is perpendicular to zoom and focusing camera lens 2, while the tested each measured surface of diamond sample 5, can rotate, protect
Each measuring surface is demonstrate,proved perpendicular to zoom and focusing camera lens 2.D65 light source 6 irradiates 7 surface of V-shaped groove, and light enters detected sample after diffusing
Product 5.
B. signal through the tested transmission of diamond sample 5 and reflection light by forming.Optical signal amplifies through zoom and focusing camera lens 2
Afterwards, enter CCD detector 1 through semi-permeable and semi-reflecting mirror all the way to be imaged, and shown in locating and displaying device 9.Pass through locating and displaying device 9
Show the image in the diamond region being amplified, it may be convenient to adjust and determine measured point.
C. another Ray Of Light enters light-conductive optic fibre through semi-transflective reflective 4, and signal is transferred to spectrometer 3.Pass through light splitting and light
After spectrum signal collection analysis calculates, the measured color coordinates put is provided（x,y）.Analysis system is to meeting CIE color system
Chromaticity coordinates carries out automated programming, calculates and meets GB/T 18303-2001《Diamond color grade colorimetric visual valuation method》In (D, E,
F,G,H,I,J,K,L,M,N,<N）Color grade be classified color, as shown in Figure 4.
5. standard sample is tested.
For the traceability for guaranteeing result, applicant has borrowed more sets and has done test with the sample of national standard sample certificate and grind
Study carefully.Including：No. 136-002, No. 136-005,136-006 standard sample of GSB 01-1336-2000 series；There are also GSB
The certificate number of 01-2931-2012 ~ GSB 01-2941-2012 series is the standard sample of 055-24-2013（11）；And
Ratio colored stone with HRD certificate（9）.
It finds during the test, the GSB 01-2931-2012 series and the sample with HRD certificate that the later period develops are whole
It is smaller to cover the difference more mutual than colored stone.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
It imitates embodiment and is applied to other fields, but without departing from the technical solutions of the present invention, according to the technical essence of the invention
Any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the protection scope of technical solution of the present invention.
Claims (9)
1. a kind of grading automatical measuring device of diamond color, it is characterised in that：It is automatic including micro- microcell positioning system and spectrum
Computing system is acquired, micro- microcell positioning system includes V-type sample cell（7）And blank, blank side are provided with light source（6）, white
Zoom and focusing camera lens is provided with right above plate（2）, zoom and focusing camera lens（2）Surface and side be respectively set one piece it is semi-transparent semi-reflecting
Penetrate mirror（4）, zoom and focusing camera lens（2）The semi-permeable and semi-reflecting mirror top of surface is provided with CCD detector（1）；Another piece semi-transparent
The light of half-reflecting mirror reflection passes through signal wire（10）It is transmitted to spectrometer（3）, spectrometer（3）Output end be connected at signal
Manage computer（11）.
2. the grading automatical measuring device of diamond color according to claim 1, it is characterised in that：The V-type sample cell（7）Gu
It is scheduled on adjustable two dimension platform（8）On.
3. the grading automatical measuring device of diamond color according to claim 1, it is characterised in that：Two pieces of semi-permeable and semi-reflecting mirrors are flat
Row setting, and with horizontal plane angle at 45 °.
4. the grading automatical measuring device of diamond color according to claim 1, it is characterised in that：CCD detector（1）, zoom
Focusing lens（2）, semi-permeable and semi-reflecting mirror（4）It is fixed by general frame, general frame is fixed on iron by screwing screw
On pallet.
5. the grading automatical measuring device of diamond color according to claim 1, it is characterised in that：Micro- microcell positioning system
Display uses MV31 software.
6. the grading automatical measuring device of diamond color according to claim 1, it is characterised in that：Spectrum automatic data acquisition and calculation system
System uses UV5000 software.
7. the grading automatical measuring device of diamond color according to claim 1, it is characterised in that：Light source（6）Using D65 light
Source.
8. the grading automatical measuring device of diamond color according to claim 1, it is characterised in that：Blank is two be separately provided
Block.
9. the grading automatical measuring device of diamond color according to claim 1, it is characterised in that：Spectrometer（3）Using Microsoft
Windows VC, VC develop integration tool windows desktop application program.
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| CN201810329708.XA CN108896546A (en) | 2018-04-13 | 2018-04-13 | A kind of grading automatical measuring device of diamond color |
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| CN201810329708.XA CN108896546A (en) | 2018-04-13 | 2018-04-13 | A kind of grading automatical measuring device of diamond color |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020119673A1 (en) * | 2018-12-10 | 2020-06-18 | Goldway Technology Limited | Gemstone colour grading process and grading system |
| CN111340017A (en) * | 2020-03-30 | 2020-06-26 | 南京宝光检测技术有限公司 | Device and method for quickly acquiring waist code of diamond |
| CN116242829A (en) * | 2023-03-09 | 2023-06-09 | 江苏弘远晶体科技有限公司 | Automatic measuring device and method for grading diamond color |
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Application publication date: 20181127 |