CN107796819A - Dome light source diamond measuring instrument and diamond measuring method - Google Patents
Dome light source diamond measuring instrument and diamond measuring method Download PDFInfo
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- CN107796819A CN107796819A CN201711230662.8A CN201711230662A CN107796819A CN 107796819 A CN107796819 A CN 107796819A CN 201711230662 A CN201711230662 A CN 201711230662A CN 107796819 A CN107796819 A CN 107796819A
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- sample
- light source
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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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The present invention relates to jewel detection field, there is provided a kind of dome light source diamond measuring instrument and diamond measuring method.A kind of dome light source diamond measuring instrument, including processor, light source assembly, image collecting device and the sample stage for placing sample；The light source assembly includes light-emitting component and reflecting plate, and for the reflecting plate between light-emitting component and image collecting device, the center of reflecting plate offers through hole；The light that the light-emitting component launches different angle forms the incident ray for being radiated at the sample on sample stage after baffle reflection；The center of the sample stage, the center of light-emitting component, the center of reflecting plate and image collecting device are centrally located on same axis.The optical parametric of dome light source diamond measuring instrument energy directly determination sample, it can effectively, objectively evaluate the optical effect of diamond.A kind of diamond measuring method, the measurement of optical parametric is carried out to sample using above-mentioned dome light source diamond measuring instrument.
Description
Technical field
The present invention relates to jewel detection field, more particularly to a kind of dome light source diamond measuring instrument and diamond measuring method.
Background technology
Bright diamond is that the strong reflection to incident ray is produced because of its special cut, and these reflexs are divided into bright
Light, fire are color and flicker, merging are referred to as lightness (Brilliance).In order to evaluate the quality of diamond lightness, traditionally, pass through
The cut parameter (including the geometric parameter of cut, symmetrical degree, polishing) of diamond is evaluated.The general principle of these methods
Establish Marcel Tolkowsky to diamond it is optical two dimension research on the basis of (《Diamond Design:A Study of
the Reflection and Refraction of Light in a Diamond》), that is to say, that optical effect of diamond
Evaluation is realized by the evaluation of indirect cut parameter.
But cut parameter is difficult to describe the optical effect of a specific diamond, it is impossible to the figure of diamond reflection light is depicted
Case, often cut parameter identical difference diamond, with different optical effects, with different Christmas tree patterns, therefore basis
Cut parameter is difficult to the quality for being accurately judged to optical effect of diamond.
The content of the invention
It is an object of the invention to provide a kind of dome light source diamond measuring instrument and diamond measuring method, sample can be directly determined
The optical parametric of product, it can effectively, objectively evaluate the optical effect of diamond.
In order to solve the above technical problems, invention uses technical scheme as described below.A kind of dome light source diamond measuring instrument,
Including processor, light source assembly, image collecting device and sample stage for placing sample, the light source assembly is provided and is radiated at
The incident ray of sample on sample stage, described image harvester are formed for gathering the sample reflection incident ray
Image；Described image harvester is connected with the processor, and the processor is used to receive by image acquisition device
To image and obtain the optical parametric of sample using the image processing and analyzing；The light source assembly includes light-emitting component and reflection
Plate, for the reflecting plate between light-emitting component and image collecting device, the center of reflecting plate offers through hole；The luminous member
The light that part launches different angle forms the incident ray for being radiated at the sample on sample stage after baffle reflection；It is described
The center of sample stage, the center of light-emitting component, the center of reflecting plate and image collecting device are centrally located on same axis.
Preferably, the light-emitting component includes the lamp bead in concentric turns distribution.
Preferably, the light-emitting component also includes a bearing part for being used to carry the lamp bead, and the bearing part is in disk
Shape, its external diameter are 60-200mm, internal diameter 20-60mm；The reflecting plate is in the form of annular discs, and its external diameter is 60-200mm, and internal diameter is
20-60mm。
Preferably, the sample stage includes the lamina of septum pellucidum being oppositely arranged with the reflector, and for described in fixation
The diaphragm of sample；The lamina of septum pellucidum is circular, its a diameter of 9-40mm.
Preferably, the diamond measuring instrument also includes the cabinet with a cabinet panel, and the sample stage is arranged at cabinet
On panel, the light source assembly and image collecting device are arranged in cabinet；The cabinet panel is provided with chassis lid and use
In the controlling switch of control light-emitting component.
Preferably, the processor also includes display device.
A kind of diamond measuring method, the survey of optical parametric is carried out to sample using above-mentioned dome light source diamond measuring instrument
Amount.
Preferably, the diamond measuring method further comprise by image acquisition device to image be digitized
Information processing obtains view data and stored, and carries out analyzing the brightness that sample is calculated using the view data and fire is color strong
Degree.
Preferably, the analysis of the brightness is calculated as：Read the gray value of each pixel of image collected, and with it is pre-
If gray threshold compare, be reflective bright district more than the gray threshold, the gray value sum of the bright district picture element is
For the brightness value of sample.
Preferably, the analysis of the color intensity of fire is calculated as：R, G, B value for each picture element for collecting image are read,
And hue value, saturation degree and brightness (HSL) are calculated, the picture element that saturation degree is more than predetermined threshold value with brightness is color point, and
It is calculated as chroma value；The chroma value sum of color point is the color intensity level of fire.
The beneficial effects of the present invention are：
The invention provides a kind of dome light source diamond measuring instrument, by providing incident ray, and gather sample reflect into
The image that light is formed is penetrated, the optical parametric of sample is obtained using acquired image Treatment Analysis；Relative to prior art
In evaluate the optical effect of diamond indirectly by cut parameter, the dome light source diamond measuring instrument can direct determination sample light
Parameter is learned, can effectively, objectively evaluate the optical effect of diamond.Also, light-emitting component launches the light of different angle
The incident ray for being radiated at the sample on sample stage is formed after baffle reflection, the incident ray so formed is similar to
The light that dome light source is sent, it can preferably determine the illumination effect of diamond；The luminescence component also have it is simple in construction, be easy to
The advantages of manufacture.The dome light source diamond measuring instrument application prospect is good, can be used for the evaluation of diamond crudy, can effectively improve
Diamond is cut in process quality, the yield rate of diamond；The dome light source diamond measuring instrument can be additionally used in diamond finished product
Quality inspection, contribute to the quality control of diamond jewelry.
Present invention also offers a kind of diamond measuring method, and sample is carried out using above-mentioned dome light source diamond measuring instrument
The measurement of optical parametric, can direct determination sample optical parametric, can effectively, objectively evaluate the optical effect of diamond.
And the diamond measuring method has the advantages of easy to operate, test result is accurate.The diamond measuring method application prospect is good, can
Evaluated for diamond crudy, the yield rate of diamond is cut in process quality, diamond can be effectively improved；The diamond
Measuring method can be additionally used in the quality inspection of diamond finished product, contribute to the quality control of diamond jewelry.
Brief description of the drawings
Fig. 1 is the structural representation of dome light source diamond measuring instrument provided by the present invention.
Fig. 2 is the structural representation of light-emitting component in dome light source diamond measuring instrument provided by the present invention.
Fig. 3 is the schematic flow sheet of diamond measuring method provided by the present invention.
Embodiment
To make one of ordinary skill in the art that the purpose, technical scheme and advantage of invention be more clearly understood, below
Invention is further elaborated in conjunction with the accompanying drawings and embodiments.
Embodiment one
As shown in figure 1, a kind of dome light source diamond measuring instrument, including processor 14, light source assembly, image collecting device 4
And for placing the sample stage 1 of sample 13, the light source assembly provides the incident light for being radiated at the sample 13 on sample stage 1
Line, described image harvester 4 reflect the image that the incident ray is formed for gathering sample 13；Described image collection dress
4 are put with the processor 14 to be connected, the processor 14 be used for receive by image acquisition device to image and using should
Image processing and analyzing obtains the optical parametric of sample 13；The light source assembly includes light-emitting component 2 and reflecting plate 3, the reflection
For plate 3 between light-emitting component 2 and image collecting device 4, the center of reflecting plate 3 offers through hole；The light-emitting component 2 is launched
The light for going out different angle forms the incident ray for being radiated at the sample 1 on sample stage 13 after the reflection of reflecting plate 3.
Dome light source diamond measuring instrument provided by the present invention, by providing incident ray, and it is incident to gather sample reflection
The image that light is formed, the optical parametric of sample is obtained using acquired image Treatment Analysis；Relative in the prior art
Evaluate the optical effect of diamond indirectly by cut parameter, the optics of dome light source diamond measuring instrument energy directly determination sample
Parameter, it can effectively, objectively evaluate the optical effect of diamond.Also, light-emitting component launches the light warp of different angle
The incident ray for being radiated at the sample on sample stage is formed after baffle reflection, the incident ray so formed is similar to vault
The light that top light source is sent, it can preferably determine the illumination effect of diamond；The luminescence component also have it is simple in construction, be easy to make
The advantages of making.
The center of the sample stage 1, the center of light-emitting component 2, the center of the center of reflecting plate 3 and image collecting device 4
On same axis 8.So setting can preferably ensure that incident ray is impinged upon on sample 13, and can gather sample well
The image that product 13 reflect.
Herein, it is further explained for dome light source, so-called dome light source is the unobstructed diffused ray of sky,
Such as the lighting condition of the square environment of without sunlight direct projection, under this light source, the light for inciding sample (i.e. diamond) is full of
The solid angle of 180 degree, and the intensity of the light in each direction is almost consistent, it then follows and zenith is most strong (0 degree), to horizon direction
The rule that (90 degree) gradually weaken, light intensity I can use formula (1) to represent：
I=Io*COS (k* α) (1)
K is the coefficient less than 1 in formula, and α is the incidence angle of light, and Io is the initial strength of light.
The incident ray that light source assembly in the present invention is provided, namely lighted by light-emitting component 2 and reflected through reflecting plate 3
The incident ray of formation, its path can use formula (2) to describe
L=2*H*COS θ (2)
L is light path in formula, and light shines diamond sample paths traversed length from light-emitting component；H is reflecting plate to hair
The distance of optical element, θ are the incidence angle of light incidence diamond.
Because the intensity of sample reception to illumination and the distance of light source are directly proportional, light source is more far away, what sample irradiation arrived
Light intensity is lower.Formula (2) shows, incides the distance of light source of the light of diamond as the increase of incidence angle, diamond are irradiated to
Light intensity reduce, so formula (2) and formula (1) are of equal value.Illustrate that the light source assembly of the present invention meets the condition of dome light source.
Also referring to Fig. 2, it is preferable that the light-emitting component 2 includes the lamp bead 21 in concentric turns distribution, so different circles
The lamp bead 21 of ring provides the light of different angle.As shown in Figure 2, it is described for carrying also to include one for the light-emitting component 2
The bearing part 22 of lamp bead 21, the bearing part 22 is in the form of annular discs, and its external diameter is 60-200mm, internal diameter 20-60mm.Such as institute in figure
Show, 5 circle lamp beads 21 can be evenly distributed with the bearing part 22.Preferably, the reflecting plate 3 is in the form of annular discs, and its external diameter is
60-200mm, internal diameter 20-60mm.Specifically, lamp bead 21 is white light lamp bead, reflecting plate 3 is white reflective plate.
In some specific embodiments, the external diameter of the bearing part 22 is 100mm, internal diameter 32mm, in bearing part 22
On be distributed with 4 circle lamp beads 21,4 circle lamp bead 21 diameter be respectively 65mm, 55mm, 45mm and 35mm.Lamp bead 21 and reflecting plate 3 it
Between distance be 60mm.In use, some lamp beads 21 are lighted simultaneously, the light that lamp bead 21 is launched is after the reflection of reflecting plate 3
Form the uniform incident ray that incidence angle is 8-45 degree.
Referring to Fig. 1, preferably, the sample stage 1 includes the lamina of septum pellucidum 11 being oppositely arranged with the reflector 3, with
And for fixing the diaphragm 12 of the sample 13.Sample 13 is fixed by diaphragm 12, can guarantee that sample 13 always situated in
The center of sample stage 1, effectively improve the stability and accuracy of measurement.It is preferred that the lamina of septum pellucidum 11 is circle, its is straight
Footpath is 9-40mm.The diaphragm 12 can be it is manual or automatic, in certain embodiments, the diaphragm
12 be manual diaphragm.
In certain embodiments, the dome light source diamond measuring instrument also includes the cabinet 5 with a cabinet panel 6, institute
State sample stage 1 to be arranged on cabinet panel 6, the light source assembly and image collecting device 4 are arranged in cabinet 5.Specifically such as
Shown in Fig. 1, the sample stage 1 is located at the outside of cabinet 5, and the light-emitting component 2 is located at the inner side of cabinet panel 6.Preferably, in machine
Supporting plate 7 is set in case 5, described image harvester 4 is set or installed on supporting plate 7.Preferably, the cabinet panel 6
Chassis lid 10 is provided with, light shield can be played a part of.Preferably, the cabinet panel 6, which is provided with, is used to control light-emitting component 2
Controlling switch 9, be easy to control light-emitting component 2.In some embodiments, it is also possible to it is that the processor 14 is described for controlling
Light-emitting component 2, or the processor 14 control light-emitting component 2 by controlling switch 9.
In some preferred embodiments, the processor 14 also includes display device, can be with display image harvester 4
The image collected, the reproduction of these images provide the method for directly observing sample optical effect so that the lightness of diamond
More intuitively it can show and recognize, be advantageous to show glamour and the business promotion of diamond.Such as the processor 14 is meter
Calculation machine, the screen of computer is display device.
Embodiment two
A kind of diamond measuring method, light is carried out to sample using a kind of provided dome light source diamond measuring instrument of embodiment
Learn the measurement of parameter.The measurement of optical parametric is carried out to sample using above-mentioned dome light source diamond measuring instrument, can directly be determined
The optical parametric of sample, it can effectively, objectively evaluate the optical effect of diamond.And the diamond measuring method has operation
Conveniently, the advantages of test result is accurate.The diamond measuring method application prospect is good, can be used for the evaluation of diamond crudy, energy
Effectively improve quality, the yield rate of diamond that diamond in process is cut；The diamond measuring method can be additionally used in diamond finished product
Quality inspection, the displaying of the lightness of diamond jewelry, contribute to the quality control and business promotion of diamond jewelry.
, can be with according to the explanation of the dome light source diamond measuring instrument in embodiment one also referring to shown in Fig. 1 and Fig. 3
Understand, the diamond measuring method includes：
Step S1：Start the dome light source diamond measuring instrument, collect sample 13 and reflect the incident ray and formed
Image；Specifically, lighting light-emitting component 2, that is, all lamp beads 21 are lighted, the light that lamp bead 21 is sent is after reflecting plate 3 is penetrated
The incident ray for being radiated at the sample 13 on sample stage 1 is formed, described image harvester 4 is used to gather the reflection of sample 13 institute
State the image that incident ray is formed；
Step S2：The processor 14 receives the image collected by image collecting device 4 and utilizes the image procossing point
Analysis obtains the optical parametric of sample 13.Preferably, the image that image collecting device 4 collects is digitized into information processing to obtain
To view data and store；Be digitized into being more convenient for after information processing accuracy, the rapidity of data transfer, and storage immediately can be right
Data are effectively preserved, and are easy to check.Described optical parametric is brightness and the color intensity of fire.Therefore, it is preferable real at some
Apply in example, the diamond measuring method further comprises the image that image collecting device 4 collects being digitized at information
Reason obtains view data and stored, and carrying out analysis using the view data is calculated the brightness of sample 13 and fiery color intensity.
It is further that the analysis of the brightness is calculated as：The gray value of each pixel of the image collected is read, and
Be reflective bright district more than the gray threshold compared with default gray threshold, the gray value of the bright district picture element it
The as brightness value of sample.The calculation formula of brightness is：
Lz is the brightness of diamond sample in formula, and Li is the brightness value of the i-th picture element in image, and m is the pixel sum of image.
It is further that the analysis of the color intensity of fire is calculated as：Read R, G, the B for each picture element for collecting image
Value, and hue value, saturation degree and brightness (HSL) are calculated, the picture element that saturation degree is more than predetermined threshold value with brightness is color point,
And it is calculated as chroma value；The chroma value sum of color point is the color intensity level of fire.The calculation formula of the color intensity of fire is：
Lc is the fiery color intensity of diamond sample in formula, and Lci is the chroma value of the i-th picture element in image, and m is the pixel of image
Sum.
Claims (10)
1. a kind of dome light source diamond measuring instrument, including processor, light source assembly, image collecting device and for placing sample
Sample stage, the light source assembly provide the incident ray for being radiated at the sample on sample stage, and described image harvester is used for
Collection sample reflects the image that the incident ray is formed；Described image harvester is connected with the processor, the place
Reason device be used for receive by image acquisition device to image and obtain the optical parametric of sample using the image processing and analyzing；
It is characterized in that：
The light source assembly includes light-emitting component and reflecting plate, the reflecting plate be located at light-emitting component and image collecting device it
Between, the center of reflecting plate offers through hole；The light that the light-emitting component launches different angle is formed after baffle reflection
It is radiated at the incident ray positioned at sample on sample stage；
The center of the sample stage, the center of light-emitting component, the center of reflecting plate and image collecting device are centrally located at same
On axis.
2. dome light source diamond measuring instrument as claimed in claim 1, it is characterised in that：It is in concentric turns that the light-emitting component, which includes,
The lamp bead of distribution.
3. dome light source diamond measuring instrument as claimed in claim 2, it is characterised in that：The light-emitting component is also used for including one
The bearing part of the lamp bead is carried, the bearing part is in the form of annular discs, and its external diameter is 60-200mm, internal diameter 20-60mm；It is described anti-
It is in the form of annular discs to penetrate plate, its external diameter is 60-200mm, internal diameter 20-60mm.
4. dome light source diamond measuring instrument as claimed in claim 1, it is characterised in that：The sample stage include with it is described reflective
The lamina of septum pellucidum that plate is oppositely arranged, and for fixing the diaphragm of the sample；The lamina of septum pellucidum is circular, its a diameter of 9-
40mm。
5. dome light source diamond measuring instrument as claimed in claim 1, it is characterised in that：Also include the machine with a cabinet panel
Case, the sample stage are arranged on cabinet panel, and the light source assembly and image collecting device are arranged in cabinet；The cabinet
Panel is provided with chassis lid and the controlling switch for controlling light-emitting component.
6. the dome light source diamond measuring instrument as described in claim any one of 1-5, it is characterised in that：The processor also wraps
Include display device.
A kind of 7. diamond measuring method, it is characterised in that：Using dome light source diamond measuring instrument as claimed in claim 1 to sample
Product carry out the measurement of optical parametric.
8. diamond measuring method as claimed in claim 7, it is characterised in that：The diamond measuring method further comprises scheming
The image collected as harvester is digitized information processing and obtains view data and store, and is carried out using the view data
Brightness and the color intensity of fire of sample is calculated in analysis.
9. diamond measuring method as claimed in claim 7 or 8, it is characterised in that：The analysis of the brightness is calculated as：Reading is adopted
The gray value of each pixel of the image collected, and be reflective more than the gray threshold compared with default gray threshold
Bright district, the gray value sum of the bright district picture element are the brightness value of sample.
10. diamond measuring method as claimed in claim 7 or 8, it is characterised in that：The analysis of the color intensity of fire is calculated as：
Read R, G, B value for each picture element for collecting image, and calculate hue value, saturation degree and brightness (HSL), saturation degree and
The picture element that brightness is more than predetermined threshold value is color point, and is calculated as chroma value；The chroma value sum of color point is worth for fire is color.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711230662.8A CN107796819B (en) | 2017-11-29 | 2017-11-29 | Dome light source diamond measuring instrument and diamond measuring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711230662.8A CN107796819B (en) | 2017-11-29 | 2017-11-29 | Dome light source diamond measuring instrument and diamond measuring method |
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| CN107796819A true CN107796819A (en) | 2018-03-13 |
| CN107796819B CN107796819B (en) | 2023-06-02 |
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Cited By (4)
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| CN108931523A (en) * | 2018-10-15 | 2018-12-04 | 深圳市完美爱钻石有限公司 | A kind of diamond optical parameter measurement method |
| CN109001205A (en) * | 2018-06-25 | 2018-12-14 | 中国地质大学（北京） | A kind of device for evaluating jewel fire coloured silk and flashing quality |
| TWI727631B (en) * | 2018-07-30 | 2021-05-11 | 住華科技股份有限公司 | Jig for the observation of a side of a thin flat sample and method using the same for assistance to the observation of a side of a thin flat sample |
| 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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| TWI727631B (en) * | 2018-07-30 | 2021-05-11 | 住華科技股份有限公司 | Jig for the observation of a side of a thin flat sample and method using the same for assistance to the observation of a side of a thin flat sample |
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| Publication number | Publication date |
|---|---|
| CN107796819B (en) | 2023-06-02 |
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