CN209342610U - A kind of diamond rapid screening equipment - Google Patents

Abstract

The utility model relates to a kind of diamond rapid screening equipment.The equipment includes: that the screening platform of batch diamond to be checked is placed with large area tested region；The capable of emitting laser containing incident light in 400-900nm wave-length coverage；It can filter out comprising the part wavelength or whole wavelength in 860nm to 1100nm and the filtering assembly for being free of lambda1-wavelength；Capture the diamond to be checked image capture apparatus luminous by incident light excitation；Dichroscope；Wherein, filtering assembly is arranged before image capture apparatus, and dichroscope is set to above screening platform；The incident light that laser issues is irradiated to the large area tested region of screening platform after the diverging of divergence element by dichroscope, provides a kind of low cost, expeditiously differentiation diamond and artificial diamond, the equipment of artificial diamond is filtered out from batch diamond.

Description

A kind of diamond rapid screening equipment

Technical field

The utility model relates to diamond detection field more particularly to diamond rapid screening equipment.

Background technique

Artificial diamond is blended in batch diamond such as zircon, Mo Sangshi, imitative from screening in high-volume diamond (usually broken brill) Brill is a time-consuming and laborious job.Zircon is a kind of silicate mineral, it is the main ore of extracting metals zirconium.Zircon is extensive It is present in acidic igneous rock, also originates in metamorphic rock and other deposits.The chemical property of zircon is very stable, so in river The zircon that Gem Grade can also be seen in gravel, the Gem Grade zircon after cutting is like being diamond.Mo Sangshi is also a kind of Appearance and the closely similar jasper of diamond.But the artificial diamonds such as Sang Shi do not differ greatly zircon with diamond price, some illegal quotient Family is used to pretend to be diamond, cheats consumer, seeks exorbitant profit.

In the prior art distinguishes diamond detection, CN201510812037.9 patent application uses wavelength 220- The ultraviolet light sample of 360nm, sample issue fluorescence and phosphorescence, distinguish natural gemstone and synthesis according to fluorescence and phosphor pattern Jewel.Artificial diamond such as zircon, Mo Sangshi unstressed configuration and phosphorescent characteristic at 220-360nm, the device cannot be effectively by zircons, Mo Sang Stone distinguishes.In the patented technology, incident light uses deuterium lamp or xenon lamp, does not use laser, the fluorescence and phosphorescence figure of use It seem visible light, the luminous color of main detection.

In CN201620382893.5 patent, wavelength is used to irradiate measuring samples for the light source less than or equal to 410nm, to Sample product, which obtain energy excitation, to be caused to shine, and analyzes photoluminescence spectra crest location, whether judgement sample is diamond, if is Synthesis or rough diamond, if artificial diamond.The device can only be detected for single sample, cannot achieve fast from batch diamond Fast screening goes out artificial diamond.

In CN201720397887.1 patent and CN501511009698.4 patent application, pass through radiation of visible light Sample obtains basis imaging, and the distribution image of phosphorescence or fluorescence, the two are obtained with 180-250nm short-wave ultraviolet light irradiation sample Comparison identifies the diamond position that phosphorescence is issued in several samples, is judged in the color by fluorescence or phosphorescence, thus Synthesizing diamond is filtered out from several samples, the fluorescence and phosphorescence that sample issues are mainly visible light wave range, and utilize sending Visible light carries out colour imaging.Unstressed configuration and phosphorescent characteristic due to zircon, not under the artificial diamonds short-wave ultraviolet light irradiation such as Sang Shi, the dress Setting effectively to distinguish artificial diamond.

The above prior art and it is other in the related technology, be only the area to diamond, rough diamond, synthesizing diamond Point, or the screening further to batch diamond.In diamond when doping such as zircon, Mo Sangshi, especially Gem Grade zircon, It can not rapid screening goes out from batch diamond simply by above prior art.

Especially, the above method or equipment are mixed to adulterating zircon or Mo Sangshi in the broken brill of batch and inlay in the finished product of broken brill Miscellaneous zircon or the problem of Mo Sangshi are insoluble.Although whether CN201620382893.5 patent can distinguish sample Belong to diamond, but this method needs to configure spectrometer, price is high, and can only simple grain detection, inefficiency is not intuitionistic and concise, Broken brill particle is small, excessively high using the technology testing cost, can not carry out in practice.In general, the broken brill quantity of purchaser's buying More, after mixing artificial diamond, the prior art can not simply and efficiently be come out artificial diamond screening therein, and the wind of artificial diamond is arrived in buying Danger can not be effectively reduced.

In addition, the Raman spectrum detection technique based on 405nm or 532nm or 785nm, and can detecte and distinguish artificial diamond With diamond, but current Raman spectrum detection technique, because Raman light needs very high energy that could excite, current Raman skill Art is all to converge to laser on simple sample, it is ensured that sufficiently high energy carries out Raman excitation to sample again, to carry out light Spectrum detection is similar with CN201620382893.5 patent, it is also necessary to which configuring the Raman spectrum of spectrometer measurement sample just can be with Artificial diamond and diamond are distinguished, can not simply and efficiently be come out the artificial diamond screening in batch diamond.

For Raman light detection to environmental requirement height, often carrying out detection at low temperature just has preferable result. In CN201610356448.6 patent, diamond is quickly detected using the laser emission diamond sample surface of wavelength 405nm, is formed Portable Raman is specifically designed cooling device for drawing under cryogenic diamond in Raman light diamond detection Graceful light detection.Although such diamond detection device can distinguish diamond, due to the setting of cooling device, overall structure will become It obtains complicated.

Utility model content

The purpose of this utility model is to provide a kind of low cost, diamond and artificial diamond are expeditiously distinguished, from batch diamond In the technical issues of filtering out artificial diamond equipment.

In order to solve the above technical problems, the technical scheme adopted by the utility model is that:

A kind of diamond rapid screening equipment characterized by comprising there is large area tested region to place batch brill to be checked The screening platform of stone, the capable of emitting laser containing incident light in 400-900nm wave-length coverage；It can filter out and be arrived comprising 860nm Part wavelength in 1100nm or whole wavelength and filtering assembly, capture diamond to be checked without the lambda1-wavelength is incident The luminous image capture apparatus of light excitation, dichroscope；Wherein, filtering assembly is arranged before image capture apparatus, dichroic Mirror is set to above screening platform；The incident light that laser issues shines after the diverging of divergence element by dichroscope It is mapped to the large area tested region of screening platform.

In the technical scheme, laser is the incident light of 400-900nm wave-length coverage, and swept area is big, and artificial diamond exists It can produce the light in 860-1100nm wave-length coverage under the light source activation.It, can using in the detection deterministic process of the equipment Detect that the light for issuing 860-1100nm wavelength regards as artificial diamond, suitable for the detection of high-volume diamond, compared to existing skill Other screening equipment in art, the device structure is simple, and screening is efficient, at low cost.

The synthesis of ultraviolet light large area radiation detection and non-synthetic diamond, detected exciting light predominantly can in the prior art It is light-exposed, the fluorescence of 860-1100nm wavelength can not be inspired, the artificial diamonds screening such as zircon and Mo Sangshi can not be come out.And this is practical Novel to be radiated using 400-900nm incident light large area, excite measuring samples, in batch samples, artificial diamond can be issued closely IR fluorescence, to go out artificial diamond screening in batch samples.

And detect in the prior art incident light be 785nm equiwavelength come excite sample distinguish artificial diamond when, using Raman technology Detection, Raman technology require height to excitation energy, and laser need to converge re-radiation sample after the point for very little, therefore be unable to reach big face Product radiation, high-volume screening go out the purpose of artificial diamond.

If selecting other wave-length coverages, as 180-260nm ultraviolet light when, most of rough diamond or synthesizing diamond meeting The fluorescence or phosphorescence of different colours are generated in visible light wave range, the ultraviolet light of existing 180-360nm mainly uses deuterium lamp or xenon Lamp generates, and total energy is weak, since the equipment needs ultraviolet light covering larger area, lead to the incidence of sample Light energy is very weak, so that the luminescence phenomenon of part rough diamond and synthesizing diamond all without fluorescence and phosphorescence, can not inspire The artificial diamonds such as zircon and Mo Sangshi are in 860-1100nm fluorescence.It will be unable to realize the technical effect of the utility model.

Compared with the existing technology 785, the equipment of the Raman technologies detection such as 532nm, the technical program equipment is using containing The wide area irradiation of 380-900nm wavelength incident, selectable light source become extensively, Wavelength-selective range also increase, to setting Standby to require to be lower, detection will more efficiently.In addition, some Raman technologies require to carry out at low temperature, and the technical program only needs It can be realized as detecting a large amount of diamonds at normal temperature and inlay the purpose of finished product, not need to operate under specific low temperature environment, Applicability is very strong.

The excitation of energy ratio fluorescence required for Raman light excites is much higher, and current 785, the Raman technologies such as 532nm require Laser is converged and is being used to improve energy per unit area for the point of very little, so that the Raman light of sample is effectively excited, and this Equipment utilization is that the incident light of 380-900nm can inspire artificial diamond in the fluorescence of 860-1100nm, rather than Raman light, glimmering Light activated energy is without too high, and so as to which incident light to be diffused as to the hot spot of certain area, being mainly to ensure that can be simultaneously Measure more samples.

Current Raman technology since the wavelength of Raman light and incident excitation wavelength are directly related, synchronization can only The light incidence of some wavelength is excited, and the wavelength location of the fluorescence of this device measuring and the wavelength of incident light are unrelated, and Fluorescence intensity is then different at different wavelengths, therefore can be using 380-900nm partially or fully wavelength incidence simultaneously, it is ensured that Different samples can obtain stronger fluorescence.

It should be pointed out that the light of the relatively other wavelength of specific gravity of the incident light containing 400-900nm is bigger, incident light The middle light for concentrating the wavelength containing 400-900nm.The specific gravity is can make artificial diamond inspire the wavelength within the scope of 860-1100nm Light subject to, the specific range of the specific gravity is not specifically limited.

Preferably, the incident light that laser issues is to contain the light in 600nm-860nm wave-length coverage.It is free of in incident light On the basis of 860-1100nm wave-length coverage, 600nm-860nm wave-length coverage is further selected.Select the wave-length coverage, diamond Luminous signal is very weak.And 600-860nm is closer to the emission wavelength position of artificial diamond, and the luminescence generated by light wave crest of artificial diamond is in 860- Between 1100nm, incident 600-860nm wavelength is closer, and luminous efficiency is higher, strong so as to cause the luminous signal of artificial diamond, bores The luminescence generated by light signal and artificial diamond luminescence generated by light signal of stone be not in an order of magnitude.So when capturing luminescence generated by light signal, Since artificial diamond luminous signal is strong, bright spot can be transparent to show that in image capture apparatus, and the luminescence generated by light of diamond is mainly visible It is quite weak or even completely do not shine in the signal of 860-1100 within the scope of light 400-780nm, on image capture apparatus almost without Method detects.

Preferably, laser issue incident light wavelength be 405nm, 450nm, 532nm, 630nm, 650nm, 680nm, Wavelength in 785nm, 808nm, 830nm or 850nm.These wavelength are common laser wavelengths, can reduce equipment cost.

Preferably, laser is 2 or 2 or more, and incident light is the different waves that 2 or multiple and different light sources are launched Long light, while being irradiated to and carrying out while exciting on sample.It is found when surveying and using, although in 400-900nm range Interior incident light has stimulation effect in need, and single wavelength incident light can achieve certain screening purpose, but use two kinds The light of wavelength irradiates simultaneously, can make different artificial diamonds that can inspire sufficient fluorescence, which can be improved sieve The efficiency looked into.

Preferably, the wavelength for the incident light that laser issues is 785nm or 808nm.The wavelength close to 860-1100nm, The luminous efficiency of artificial diamond is high, meanwhile, 785 and 808 can just be arrived by eye-observation, and being easy to see when placing sample is It is no have be irradiated to by incident light, make the easy to use of the equipment.

Preferably, the optical element of laser front end setting expansion of laser light swept area.The utility model device does not use Converged light, widened laser emission area can be irradiated to the tested region of large area simultaneously, and big diverging hot spot can make together When the sample that measures it is more, it is ensured that each measuring samples being irradiated to all obtain abundant radiation excitation.

Preferably, the sample area that laser irradiates simultaneously is greater than 4 square centimeters.It can guarantee the sample being detected simultaneously Product are enough, guarantee that the area that can irradiate of incident light is sufficiently large, the diamond to be checked that tested region places batch just can be same When by incident light irradiation complete detection.

Preferably, the fluorescence that image capture apparatus capture luminescent sample issues after incident light excites, equipment is for screening Artificial diamond, including zircon or Mo Sangshi (synthesizing silicon carbide).In the device, the luminescence generated by light of artificial diamond is mainly fluorescence, and shine letter It is number strong, even if diamond generates Raman optical signal within the scope of 860-1100nm, due to Raman light with fluorescence signal completely not one On a order of magnitude.Artificial diamond luminescent sample can easily be imaged on image capture apparatus, and the Raman light of diamond then will not be by It detects.And the generation of Raman optical signal needs to converge Raman light, cannot achieve large area radiation and the simple mesh of equipment 's.The equipment by can by diamond to be checked zircon and Mo Sangshi screen, available good screening effect.

Preferably, filtering assembly is that 860nm-1100nm wavelength components or whole wavelength can be by, lambda1-wavelengths It cannot pass through, less than all unacceptable filtering assembly of the light of 860nm wavelength.The filtering assembly protects the light of 860-1100nm wavelength It staying, it is not in the light (including visible light) less than 860nm in image capture apparatus that the light less than 860nm, which filters out, relative to Filtering assembly in the prior art can effectively help image capture apparatus to artificial diamond image capture.

Preferably, filtering assembly includes 880nm long wave pass filter.Using such optical filter, can effectively realize by Fluorescence within the scope of 860-1100nm, which filters out, to be come in case observation.

Preferably, filtering assembly includes the Raman light for filtering out diamond under laser emission and generating within the scope of 880-920nm Optical filter.Under laser emission, still there may be a small amount of Raman lights for diamond to be checked, this can be added the drawing generated by optical filter Graceful light filters out, and the light for entering image capture apparatus can be made purer, make to detect more acurrate.

Preferably, image capture apparatus carries out photosensitive imaging or detection to the light of any wavelength in 860-1100nm.Figure As the light within the scope of acquisition equipment capture 860-1100nm, it can shine and detect to artificial diamond.

It preferably, further include illumination light generating apparatus, image capture apparatus also captures diamond to be checked under visible light illumination The image of imaging.Image capture apparatus folds the image being imaged under the illumination image luminous with incident light excitation Add, positions the specific location of artificial diamond.The switch imaging of switched laser device and illumination light generating apparatus respectively, then will be imaged twice It is overlapped, can quickly orient the specific location of artificial diamond, the screening equipment is fast for the screening speed of artificial diamond in batch diamond, It is easy to operate to be illustrated.Under lighting system irradiation, the image it can be seen that sample is captured, which gives over to screening artificial diamond With reference to figure.In imaging before, luminescent sample imaging position is the position of artificial diamond.Since image overwhelming majority place is in Existing is black, by the individual image, is also difficult to judge the position of artificial diamond.It will be imaged and be overlapped twice, can mark Position where artificial diamond light out can find out the specific location of artificial diamond therein.

Preferably, illumination light generating apparatus generates the lighting source containing wavelength any in 860-1100nm.Use the wavelength Light source illumination in range, can not remove filtering assembly, and direct toggle lights imaging can obtain the distributing position of sample Figure, is then shut off the lighting source, can obtain sample in the illuminated diagram of 860-1100nm, can find out after two figures are superimposed The specific location of artificial diamond therein.

Preferably, image capture apparatus includes camera lens, video camera, computer, and video camera is connect with computer.It will be in imaging results Computer is passed to, realizes intelligentized detection.

Preferably, when the work of illumination light generating apparatus, filtering assembly is taking-up state.It, can be with when filtering assembly is taken out After guaranteeing illumination sample, reflect into image capture apparatus basis of formation image.

Preferably, the mark figure with scale is set on screening platform.It can be preferably to each diamond by mark figure Coordinate setting is carried out, the specific location of artificial diamond is conveniently found out.

Preferably, image capture apparatus is black white image acquisition equipment.Only the light of 860-1100nm can enter image Acquisition equipment, the light of the wavelength are black light, are not necessarily to color system, color system can reduce sensitivity instead, using black and white The sensitivity of equipment detection, the more convenient bright spot observing artificial diamond and issuing can be improved in imaging.

Preferably, the light for the different wave length that the light source that laser incident light is 2 or multiple and different is launched, irradiates simultaneously It carries out while exciting on to measured sample.Being irradiated simultaneously using multiple light courcess can be such that different artificial diamonds is sufficiently excited, Effect of screening is more preferably.

Preferably, laser is high power laser, and power is not less than 500mW.High power laser can make batch sample Product can obtain the radiation of enough energy, improve the accuracy of screening.

Preferably, dichroscope incident laser high reflection, the wavelength higher than incident laser penetrate, and 870nm above wavelength is high Through.The setting of dichroscope can prevent incident light to be reflected into from sample into image capture apparatus.

Preferably, it is seen that light generating apparatus is LED light.LED light is easy for installation in screening equipment, at low cost, consumes energy low.

Preferably, equipment does not need cooling device.Measured sample is without especially processing, it is only necessary to ensure to be entered It penetrates illumination to be mapped to, need to only measure at room temperature, do not need freeze or particularly fix.The utility model device is opposite Low to the environmental requirement of implementation in the prior art, equipment is simpler, and equipment cost is low.

Preferably, input path is without especially processing, it is only necessary to ensure that sample can be irradiated to by incident light , imaging relations are not needed between measured sample, do not need and imaging system carries out confocal design.Detection method Compared with the existing technology, low to optical path requirements, structure is simple, and optical element is few, can be by universal use.

Detailed description of the invention

Fig. 1 is the utility model first embodiment schematic diagram；

Fig. 2 is the utility model second embodiment schematic diagram；

Fig. 3 is the utility model 3rd embodiment schematic diagram；

Fig. 4 is the 5th embodiment schematic diagram of the utility model.

Wherein, appended drawing reference meaning is as follows:

Laser 1；1'；11；11'

Lens 2

Dichroscope 3；3'；15；15'

Sample (diamond to be checked) 4；13

Filtering assembly 5；16

Camera lens 6

Video camera 7

Computer 8

Screening platform 12

Identify Figure 14

Image capture apparatus 17

LED matrix (visible light generating apparatus) 18

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.

First embodiment

The present embodiment provides a kind of diamond rapid screening equipment, as shown in Figure 1, the device includes screening platform, laser Device 1, image capture apparatus, dichroscope 3, filtering assembly 5.The batch diamond rapid screening equipment is mainly used for be checked by several Artificial diamond (zircon, not Sang Shi etc.) identification in diamond screens.

Screening platform is smooth mesa structure.When device works, need the diamond checked is evenly laid out sieving for several It looks on workbench.Screening platform can be used elevating mechanism (not shown) peace and move the support of adjustment mechanism (not shown), facilitate tune Save the position of diamond to be checked.

Semiconductor laser or He-Ne laser etc. can be used in laser 1.Laser 1 is capable of emitting to contain 400-900nm wave Incident light in long range.In the laser emission of the wave-length coverage to screening platform.

As described in Figure 1, dichroscope 3 is arranged above screening platform.Due to being incident upon screening platform in laser light source On sample when, laser light source in addition to excitation sample generate luminescence generated by light other than, can also be reflected from sample.If the reflected light and light Photoluminescence is observed together, it will generates very big noise.Bias light in luminescence generated by light will be filtered out using dichroscope 3.

Image capture apparatus can capture the artificial diamond luminescence generated by light under laser emission and be imaged.The photic hair of artificial diamond under laser emission Light is near infrared light, so, in order to make imaging clearly, near infrared imaging device is used in the present embodiment.

In the present embodiment, as shown in Figure 1, image capture apparatus includes camera lens 6, video camera 7, computer 8.Video camera 7 It is connect with computer 8.Camera lens 6 receives and detects the light transmitted from filter set 5, and optical information is converted to electricity in video camera 7 Signal.Then electric signal is converted into digital signal by mould group, and is transmitted to computer 8, finally show that artificial diamond is sent out in computer 8 Light image.Camera lens 6 is CCD or CMOS.

Image capture apparatus at seem image or video recording.The testing result of image or form of recording a video vivid can react Out the case where artificial diamond.

In the present embodiment, image capture apparatus carries out photosensitive imaging or inspection to the light of any wavelength in 860-1100nm It surveys.

In the present embodiment, the fluorescence that image capture apparatus capture luminescent sample issues after incident light excites.

In preferred embodiment, image capture apparatus is the acquisition equipment of black white image.In other embodiments, it can also be used Color imaging system, but observing effect is poor, and color system is more demanding to imaging device, and black and white imaging system can make as far as possible Testing result observes intuitive (black or white), and equipment is simpler.

Filtering assembly 5 can be filtered out comprising the part wavelength or whole wavelength in 860nm to 1100nm and without incident light wave Long light, filtering assembly 5 are arranged before image capture apparatus.

Screening platform, laser 1, image capture apparatus, dichroscope 3, filtering assembly 5 are all set in a secret room, Prevent the entrance of external light source.The secret room can be caused by structures such as cabinets.

In the present embodiment, lens 2 are arranged in 1 front end of laser, as shown in Figure 1.The 2 expansion of laser light device 1 of lens, which issues, to swash The swept area of light.The sample area that laser irradiates simultaneously in the present embodiment is greater than 4 square centimeters.Since this equipment is used for The swept area of batch screening diamond, laser 1 may be smaller, and laser is the point of aggregation, and diamond to be checked can not be made whole It is radiated.At this point, lens 2 can expand the swept area of light source.In other embodiments, other diffusion light can also be used Element.

In more specific embodiment, the first incident radiant 1 is the light of wavelength within the scope of 400-900nm.Filtering assembly 5 is filtered Out in 860nm to 1100nm range wavelength light.Other wavelength are excluded in incident light.

In a preferred embodiment, laser incident light is to contain the light in 600nm-860nm wave-length coverage.More specific real It applies in example, laser incident light is the light of wavelength within the scope of 600nm-860nm, excludes other wavelength.

In a preferred embodiment, laser issue incident light wavelength be 405nm, 450nm, 532nm, 630nm, 650nm, 680nm, 785nm, the light of the wavelength in 808nm, 830nm or 850nm.

In a preferred embodiment, laser wavelength is 785nm or 808nm.

In the present embodiment, the sample area that laser 1 can irradiate simultaneously is greater than 3*2cm, specially 5cm*7cm.

In the present embodiment, need to screen is artificial diamond, specially zircon.The light that zircon is issued through incident light excitation concentrates on In 860-920nm wave-length coverage, luminous signal is strong, predominantly fluorescence, is captured by image capture apparatus.

In other embodiments, artificial diamond can be for Mo Sangshi (synthesizing silicon carbide) or including at least zircon and Mo Sangshi. The light that Mo Sangshi (synthesizing silicon carbide) is issued through incident light excitation concentrates in 900-1080nm wave-length coverage, excites through incident light Issuing afterwards is mainly fluorescence, is captured by image capture apparatus.This method by by diamond to be checked zircon and Mo Sangshi filter out Come, available good diamond screening effect.

In the present embodiment, filtering assembly 5 be 860nm-1100nm wavelength components or whole wavelength can by, be less than The all unacceptable filtering assembly of the light of 860nm wavelength.In the present embodiment, filtering assembly 5 uses 880nm long wave pass filter. In the present embodiment, optical filter 5 is in horizontal laying position, is placed on before camera lens 6.

In other embodiments, filtering assembly 5 further includes filtering out diamond under laser emission to generate within the scope of 880-920nm Raman light optical filter.

Laser 1 is high power laser, and power is not less than 500mW.Since the needs of laser 1 will be placed on screening platform On several diamonds 4 to be checked be all radiated, and generate luminescence generated by light.So the power of laser 1 be belong to it is powerful.Favorably In excitation luminescence generated by light.

3 incident laser high reflection of dichroscope, the wavelength higher than incident laser penetrate, 870nm above wavelength high transmission.Such as Shown in Fig. 1, dichroscope 3 and workbench angle at 45 °.The incident light that incident radiant 1 projects can be anti-by dichroscope 3 It is incident upon sample 4.The luminescence generated by light that sample 4 excites is transmitted from dichroscope 3 upwards.

In other embodiments, low pass dichroscope also can be used in dichroscope 3, is used according to the effect of dichroscope 3 Corresponding placement location, details are not described herein.

When using this equipment, firstly, laser light source to be irradiated to the tested region of large area, tested region, which can place, to be criticized Sample is measured, which is generally the diamond or winding wheel setting finished product of batch, and tested region is the work that large area places sample Make platform.

Then, sample shines after light source activation, and the light of sending is filtered out by filtering assembly and is arrived comprising 860nm The light of wavelength within the scope of 1100nm.

Finally, be imaged after filtering by imaging system, if imaging system detects the sample of two o'clock, judge, Suspection luminescent sample is artificial diamond, quickly filters out artificial diamond to realize in high-volume diamond.

In other embodiments, it filters out after suspecting the sample for artificial diamond, can accurately be sentenced with other equipment again The type of earnest matter.The use of other equipment can be increased according to different screening requirements, but be not that screening artificial diamond process institute is necessary 's.

In the present embodiment, it as shown in Figure 1, the equipment does not need configuration cooling device and other special devices, only needs Ensure to be irradiated to by incident light, need to only measure at room temperature, does not need freeze or particularly fix.

In the present embodiment, input path is without especially processing, it is only necessary to ensure to be irradiated to by incident light tested Sample does not need imaging relations between measured sample, does not need and imaging system carries out confocal design.

It should be noted that in the present invention, laser 1, dichroscope 3, filtering assembly 5 and image capture dress The position and direction set can be adjusted according to the difference of optical path, it is only necessary to meet effect that each optical device can reach i.e. It can.It is not limited to position and direction shown in the present embodiment.

Second embodiment

In this second embodiment, the difference from the first embodiment is that, in this embodiment, incident radiant swashs Light device is two, is laser 1 and laser 1 '.

As shown in Fig. 2, after the laser that laser 1 and laser 1 ' issue passes through 3 ' transmission or reflection of dichroscope, according to It needs by 2 different light sources, different wave length incident light while being irradiated to carry out while exciting on sample.Because different are imitated The wavelength that the fluorescence of brill is easiest to the incident light being stimulated may be different, it can be ensured that different artificial diamonds can be in 860-1100nm Stronger fluorescence is all generated in wave-length coverage, is more convenient detection.

In other embodiments, incident light quantity of light source may be selected 3 or 3 or more.By 3 or 3 or more incidence Radiant is irradiated on sample simultaneously.

In a preferred embodiment, laser wavelength 405nm, 450nm, 532nm, 630nm, 650nm, 680nm, 2 or 2 or more in 785nm, 808nm, 830nm or 850nm.

3rd embodiment

The present embodiment and first embodiment are distinguished as, and the present embodiment equipment further includes illumination light generating apparatus 18, such as Fig. 3 It is shown.Image capture apparatus 17 also captures the image that the diamond to be checked is imaged under visible light illumination.

The image being imaged under the illumination image luminous with incident light excitation is overlapped by image capture apparatus 17, Position the specific location of artificial diamond.

In the present embodiment, mark Figure 14 with scale is set on screening platform 12, and mark Figure 14 is specially grid Figure.When using the screening equipment, diamond 13 to be checked is placed in grid Figure 14.It is shone with visible light source or laser light source It penetrates in the image of lower formation, due to the presence of grid Figure 14, the position of single diamond is easier to decide, convenient accurate fixed Position.

In other embodiments, mark Figure 14 can also be using honeycomb figure as coordinate.

In preferred embodiment, illumination light generating apparatus 18 is LED lamp.LED lamp 18 and laser 11 all connect power supply, And it is connect with a controller (not shown).Opening the light for laser 11 and LED lamp 18 is controlled by controller.

When illuminating the work of light generating apparatus 18, filtering assembly 16 is taking-up state.Filtering assembly 16 is taken out, it can be to avoid Filtering assembly 16 interferes the light of illumination light generating apparatus 18 to inject in image capture apparatus.

Fourth embodiment

The difference of the embodiment and second embodiment is that illumination light generating apparatus 18 is generated containing any in 860-1100nm The lighting source of wavelength.Filtering assembly 16 can not be taken out as a result, equally obtains basic image.

5th embodiment

In this fifth embodiment, the difference from the third embodiment is that, in this embodiment, incident radiant laser Device is two, is laser 11 and laser 11 '.

As shown in figure 4, after laser 11 and laser 11 ' pass through 15 ' transmission or reflection of dichroscope, as needed by 2 A different light sources, different wave length incident light is irradiated on sample simultaneously.Because the fluorescence of different artificial diamonds is easiest to be excited The wavelength of the incident light of hair may be different, it can be ensured that different artificial diamonds can all be generated in 860-1100nm wave-length coverage compared with Strong fluorescence is more convenient detection.

It should be noted that in the present invention, laser 11, spectrum groupware 15, optical filter 16 and camera lens 6 position It sets and direction can be adjusted according to the difference of optical path, it is only necessary to meet the effect that each optical device can reach.No It is defined in position and direction shown in the present embodiment.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change It also should be regarded as the protection scope of the utility model into replacement.

Claims (11)

1. a kind of diamond rapid screening equipment characterized by comprising

The screening platform (12) of batch diamond to be checked is placed with large area tested region；

The capable of emitting laser (1 containing incident light in 400-900nm wave-length coverage；11)；

It can filter out comprising the part wavelength or whole wavelength in 860nm to 1100nm and the optical filtering group for being free of the lambda1-wavelength Part (5；16)；

Capture the diamond to be checked image capture apparatus (17) luminous by incident light excitation；

Dichroscope (3；15)；

Wherein, the filtering assembly (5；16) it is arranged before image capture apparatus (17), the dichroscope (3；15) it is arranged Above the screening platform (12)；The laser (1；11) incident light issued passes through after the diverging of divergence element Cross dichroscope (3；15) it is irradiated to the large area tested region of screening platform (12).

2. diamond rapid screening equipment as described in claim 1, it is characterised in that: the incident light that the laser issues be containing There is the light in 600nm-860nm wave-length coverage.

3. diamond rapid screening equipment as described in claim 1, it is characterised in that: the wave for the incident light that the laser issues A length of 405nm, 450nm, 532nm, 630nm, 650nm, 680nm, 785nm, the light of the wavelength in 808nm, 830nm or 850nm.

4. diamond rapid screening equipment as described in claim 1, it is characterised in that: the laser is 2 or 2 or more (1；1 ') light for the different wave length that the light source that, incident light is 2 or multiple and different is launched, while being irradiated on measured sample It carries out while exciting.

5. such as diamond rapid screening equipment of any of claims 1-4, it is characterised in that: the laser (1；11) The optical element (2) of expansion of laser light swept area, the laser (1 is arranged in front end；11) sample area of irradiation is greater than 4 simultaneously Square centimeter, the wavelength for the incident light that the laser issues are 785nm or 808nm.

6. such as diamond rapid screening equipment of any of claims 1-4, it is characterised in that: described image acquisition equipment (17) capture luminescent sample fluorescence for issuing after incident light excitation, the equipment for screening artificial diamond, including zircon or Mo Sangshi.

7. such as diamond rapid screening equipment of any of claims 1-4, it is characterised in that: the filtering assembly is 860nm-1100nm wavelength components or whole wavelength can cannot be passed through by, lambda1-wavelength, less than the light of 860nm wavelength All unacceptable filtering assembly.

8. such as diamond rapid screening equipment of any of claims 1-4, it is characterised in that: described image acquisition equipment (17) photosensitive imaging or detection are carried out to the light of any wavelength in 860-1100nm, described image acquisition equipment is black white image Acquisition equipment.

9. such as diamond rapid screening equipment of any of claims 1-4, it is characterised in that: further include illumination light Device (18), image capture apparatus (17) also capture the image that the diamond to be checked is imaged under illumination, described image The image being imaged under the illumination image luminous with incident light excitation is overlapped by acquisition equipment (17), positions artificial diamond Specific location.

10. diamond rapid screening equipment as claimed in claim 9, it is characterised in that: the illumination light generating apparatus (18) produces The raw lighting source containing wavelength any in 860-1100nm.

11. such as diamond rapid screening equipment of any of claims 1-4, it is characterised in that: the dichroscope (3； 15) incident laser high reflection, the wavelength higher than incident laser penetrate, 870nm above wavelength high transmission.