Detection device for diamond grading
By combining a first light source and a second light source in the detection device, the problems of low efficiency and high cost in existing diamond detection methods have been solved, achieving efficient and low-cost diamond detection.
Patent Information
- Application Number
- CN202521392333.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-03
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-07-03
AI Technical Summary
Existing diamond testing methods are inefficient and costly, making it difficult to meet testing needs.
A first and second light source are used in conjunction with a camera detection module, and a ring reflector and a filter are used for diamond detection, which improves detection efficiency and reduces costs.
It has enabled efficient diamond testing, reduced labor costs, and improved testing results and accuracy.
Smart Images
Figure CN224933885U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of detection light source technology, and in particular to a detection device for diamond grading. Background Technology
[0002] Diamonds are polished diamonds. They are single-element crystals composed of carbon, formed under high pressure and high temperature conditions deep within the Earth. Diamonds on the market generally need to be tested and graded.
[0003] The common method for diamond testing is manual inspection, in which trained graders use diamond testing lamps to illuminate the diamonds and then compare them with color charts and color stones. Diamonds are selected by visual observation, and then graded by graders according to their color. However, since different diamonds require different colored diamond testing lamps for testing, and the comparison process takes a long time, manual inspection is inefficient and costly, making it difficult to meet the testing needs. Utility Model Content
[0004] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a testing device for diamond grading. This device can detect diamonds through the cooperation of a camera detection module with a first light source and a second light source, resulting in high detection efficiency and low detection cost, which can meet the detection requirements.
[0005] To achieve the above objectives, this utility model provides a testing device for diamond grading. The testing device includes a housing, comprising a shell, a reflective layer, and a base. The shell has a first opening and a receiving groove. The receiving groove is located at the bottom of the shell, and its wall is semi-circular. The reflective layer is disposed on the wall of the receiving groove. The first opening is located at the top of the shell and extends along a vertical axis. The first opening communicates with the receiving groove. The base is located at the opening of the receiving groove and abuts against the bottom of the shell. The base has a second opening, an annular groove, and an annular opening. The second opening extends along the vertical axis and is opposite to and spaced from the first opening. The annular groove extends around the vertical axis. The annular opening is located at the top of the base, opposite to and spaced from the reflective layer, and is connected to the annular groove. The annular groove is configured with interconnected slots; annular protrusions are provided on the bottom wall of the annular groove, the annular protrusions extend around the vertical axis, and the annular protrusions are spaced apart from the two inner sidewalls opposite to the annular groove to define a first annular groove and a second annular groove; a first light source is provided in the first annular groove; the first light source is used to emit white light; a second light source is provided in the second annular groove; the second light source is used to emit violet light; an annular reflector is provided at the annular opening and abuts against the top of the annular protrusion; a light-emitting hole is provided on the annular reflector, the light-emitting hole is provided through in the vertical direction; multiple light-emitting holes are provided, and are respectively connected to the first annular groove and the second annular groove; multiple filter plates are provided, and are respectively provided at multiple light-emitting holes; a camera detection module is located above the first opening; the detection end of the camera detection module is oriented towards the first opening.
[0006] Furthermore, the first annular groove is located on the side of the second annular groove away from the vertical axis.
[0007] Furthermore, the plurality of light-emitting holes are arranged at intervals around the vertical axis; the plurality of light-emitting holes are respectively a first light-emitting hole and a second light-emitting hole; the plurality of first light-emitting holes are located above the first annular groove and are connected to the first annular groove; the plurality of second light-emitting holes are located above the second annular groove and are connected to the second annular groove; the number of first light-emitting holes is greater than the number of second light-emitting holes.
[0008] Furthermore, the light-emitting aperture is composed of a first through hole and a second through hole arranged sequentially in a vertical direction; the first through hole is located above the second through hole and is connected to the second through hole; the cross-sectional size of the first through hole is larger than the cross-sectional size of the second through hole; the filter plate is disposed in the first through hole and covers the second through hole.
[0009] Furthermore, all of the multiple light-emitting holes are oriented upwards, and the orientation of the multiple light-emitting holes is parallel to the axial direction of the vertical axis.
[0010] Furthermore, the base is also provided with a limiting boss, which is disposed on the side wall of the light outlet, and the annular reflector is disposed on the limiting boss.
[0011] Furthermore, a first mounting block is provided on the periphery of the base, and a second mounting block is provided on the periphery of the shell; the first mounting block and the second mounting block extend around the vertical axis and abut against each other.
[0012] Furthermore, it also includes a control component; the control component is disposed on one side of the base and is electrically connected to the first light source and the second light source respectively.
[0013] Furthermore, the filter plate is an ultraviolet filter.
[0014] Furthermore, the first annular groove is disposed horizontally on the side of the second annular groove away from the vertical axis, and the first light source and the second light source are located on the same horizontal plane.
[0015] Compared with the prior art, the present invention has the following advantages:
[0016] 1. In this embodiment of the present invention, the diamond to be tested can be inserted into the receiving groove from the second opening. The light emitted by the first and second light sources set in the annular groove can enter the receiving groove through the light-emitting hole on the annular reflector, so that the light can illuminate the diamond to be tested. The detection end of the camera detection module is set towards the first opening, so that the camera detection module can detect the diamond to be tested. With the cooperation of the first and second light sources, the detection efficiency is high, the labor cost is reduced, and the detection cost is reduced, which can meet the detection requirements.
[0017] 2. An annular protrusion is provided on the bottom wall of the annular groove, which divides the annular groove into a first annular groove and a second annular groove. An annular reflector is placed in the annular opening, and the annular reflector abuts against the top of the annular protrusion to separate the first light source and the second light source, preventing the light emitted by the first light source and the second light source from interfering with each other and improving the detection effect. A reflective layer is provided on the wall of the receiving groove, which can reflect the light emitted by the first light source and the second light source, reducing the light loss in the receiving groove. The groove wall is semi-circular to improve the uniformity of reflected light and eliminate interference from the uneven surface and reflection of the diamond to be tested, ensuring the detection effect. A light-emitting hole is provided on the annular reflector to control the brightness and direction of the light emitted by the first light source and the second light source. A filter plate is provided on the light-emitting hole to filter the light, thereby ensuring the detection effect. Attached Figure Description
[0018] To more clearly illustrate the technology in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of the diamond grading testing device of this utility model;
[0020] Figure 2 for Figure 1 Another structural schematic diagram of the detection device for diamond grading according to this utility model;
[0021] Figure 3 This is a cross-sectional view of the diamond grading testing device of this utility model.
[0022] Figure 4 for Figure 3 Exploded view of the base, first light source, second light source, annular reflector and filter plate of the diamond grading testing device of this utility model;
[0023] Figure 5 This is a cross-sectional view of the annular reflector of the diamond grading testing device of this utility model.
[0024] Figure label:
[0025] 100 outer shell; 110 housing; 111 first opening; 112 receiving groove; 113 second mounting block; 120 reflective layer; 130 base; 131 second opening; 132 annular groove; 133 annular opening; 134 annular protrusion; 135 first annular groove; 136 second annular groove; 137 first mounting block; 138 limiting boss; 200 first light source; 300 second light source; 400 annular reflector; 410 light emission hole; 411 first through hole; 412 second through hole; 420 first light emission hole; 430 second light emission hole; 500 filter plate. Detailed Implementation
[0026] The technology of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second", such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.
[0029] The following is for reference. Figures 1 to 5 This invention describes a testing device for grading diamonds according to an embodiment of the present invention.
[0030] like Figures 1 to 5As shown, the diamond grading testing device according to an embodiment of the present invention includes a housing 100, a first light source 200, a second light source 300, an annular reflector 400, a filter plate 500, and a camera detection module; the housing 100 includes a shell 110, a reflective layer 120, and a base 130; the shell 110 is provided with a first opening 111 and a receiving groove 112; the receiving groove 112 is disposed at the bottom of the shell 110, and the wall surface of the receiving groove 112 is a semi-circular surface; the reflective layer 120 is disposed on the wall surface of the receiving groove 112; the first opening 111... A first opening 111 is disposed on the top of the housing 110 and extends through the vertical axis; the first opening 111 communicates with the receiving groove 112; the base 130 is disposed at the opening of the receiving groove 112 and abuts against the bottom of the housing 110; the base 130 is provided with a second opening 131, an annular groove 132 and an annular opening 133; the second opening 131 extends through the vertical axis and is disposed opposite to and spaced apart from the first opening 111; the annular groove 132 extends around the vertical axis; the annular opening 133 is disposed at the top of the base 130 and is connected to the reflective layer. 120 are arranged opposite to and spaced apart from each other, and communicate with the annular groove 132; annular protrusions 134 are provided on the bottom wall of the annular groove 132, the annular protrusions 134 extend around the vertical axis, and the annular protrusions 134 are spaced apart from the two inner sidewalls opposite to the annular groove 132 to define the formation of a first annular groove 135 and a second annular groove 136; a first light source 200 is disposed in the first annular groove 135; the first light source 200 is used to emit white light; a second light source 300 is disposed in the second annular groove 136; the second light source 300... 0 is used to emit violet light; an annular reflector 400 is disposed at the annular opening 133 and abuts against the top of the annular protrusion 134; the annular reflector 400 is provided with a light-emitting hole 410, which is disposed vertically; multiple light-emitting holes 410 are provided, and are respectively connected to the first annular groove 135 and the second annular groove 136; multiple filter plates 500 are provided, and are respectively disposed at multiple light-emitting holes 410; the camera detection module is located above the first port 111; the detection end of the camera detection module is oriented towards the first port 111.
[0031] 1. In this embodiment of the present invention, the diamond to be tested can be inserted into the receiving groove 112 from the second opening 131. The light emitted by the first light source 200 and the second light source 300 set in the annular groove 132 can be projected into the receiving groove 112 through the light outlet 410 on the annular reflector 400, so that the light can illuminate the diamond to be tested. The detection end of the camera detection module is set towards the first opening 111, so that the camera detection module can detect the diamond to be tested. With the cooperation of the first light source 200 and the second light source 300, the detection efficiency is high.
[0032] 2. An annular protrusion 134 is provided on the bottom wall of the annular groove 132. The annular protrusion 134 can divide the annular groove 132 into a first annular groove 135 and a second annular groove 136. An annular reflector 400 is placed in the annular opening 133, and the annular reflector 400 abuts against the top of the annular protrusion 134 to separate the first light source 200 and the second light source 300, so as to avoid the light emitted by the first light source 200 and the second light source 300 from interfering with each other and improving the detection effect. A reflective layer 120 is provided on the wall of the receiving groove 112. The reflector plate 400 is capable of reflecting the light emitted by the first light source 200 and the second light source 300, reducing the damage to the light in the receiving groove 112. The groove wall of the receiving groove 112 is semi-circular to improve the uniformity of the reflected light and eliminate the interference of the diamond to be tested due to surface unevenness and reflection, thus ensuring the detection effect. The annular reflector plate 400 is provided with a light outlet hole 410 to control the brightness and direction of the light emitted by the first light source 200 and the second light source 300. A filter plate 500 is provided on the light outlet hole 410 to filter the light, thereby ensuring the detection effect.
[0033] Specifically, the filter plate is an ultraviolet filter; the filter plate 500 is an ultraviolet cut-off filter to prevent the purple light emitted by the second light source 300 from leaking into the first light source 200, thus preventing corrosion of the white light bulb of the first light source 200 and the generation of fluorescence reaction, ensuring the detection effect. The filter plate 500 can also ensure the purity of the purple light emitted by the second light source 300, ensuring the detection effect. Specifically, the optical density of the filter plate 500 needs to be greater than or equal to 3.
[0034] Furthermore, the reflective layer 120 is a white diffuse reflective paint coating. Since the purple light emitted by the second light source 300 can corrode the white diffuse reflective paint coating of the receiving groove 112 of the housing 110, the white diffuse reflective paint layer turns yellow. The material of the reflective layer 120 is a white diffuse reflective paint layer made of Teflon.
[0035] Specifically, multiple annular reflectors 400 are provided, and the number and diameter of the light-emitting holes 410 on the multiple annular reflectors 400 are different, so that different annular reflectors 400 can be replaced and installed at the annular opening 133 according to the actual needs, thereby improving the adaptability of the detection.
[0036] Reference Figure 3 and Figure 4The first annular groove 135 houses the first light source 200, while the second annular groove 136 houses the second light source 300. In some embodiments of this utility model, the first annular groove 135 is located on the side of the second annular groove 136 away from the vertical axis, so as to increase the space for placing the first light source 200. This allows the first annular groove 135 to accommodate a larger first light source 200, thereby enabling more white light to be emitted within the receiving groove 112 to meet the detection requirements.
[0037] Specifically, the first annular groove 135 and the second annular groove 136 are both extended around the vertical axis to form an annular structure, and the center of the semicircular surface of the receiving groove 112 of the housing 110 is located on the vertical axis, so as to further improve the uniformity of light in the receiving groove 112.
[0038] Reference Figures 3 to 5 In some embodiments of this utility model, a plurality of light-emitting holes 410 are arranged at intervals around a vertical axis; the plurality of light-emitting holes 410 are respectively a first light-emitting hole 420 and a second light-emitting hole 430; the plurality of first light-emitting holes 420 are located above the first annular groove 135 and are connected to the first annular groove 135; the plurality of second light-emitting holes 430 are located above the second annular groove 136 and are connected to the second annular groove 136; the number of first light-emitting holes 420 is greater than the number of second light-emitting holes 430.
[0039] By setting a greater number of first light-emitting holes 420, it is possible to achieve more white light within the receiving slot 112 to meet detection requirements.
[0040] Specifically, both the first light source 200 and the second light source 300 include a lamp board and lamp beads. The lamp beads are disposed at the top of the lamp board. The first light-emitting hole 420 is located above the lamp beads of the first light source 200, and the second light-emitting hole 430 is located above the lamp beads of the second light source 300, so as to ensure the brightness of the light emitted by the lamp beads in the receiving groove 112.
[0041] Specifically, multiple first light-emitting holes 420 and multiple second light-emitting holes 430 are arranged at uniform intervals around a vertical axis to further ensure the uniformity of light within the receiving groove 112.
[0042] Specifically, the first annular groove is arranged horizontally on the side of the second annular groove away from the vertical axis, and the first light source and the second light source are located on the same horizontal plane to improve the uniformity of illumination.
[0043] Reference Figure 5In some embodiments of this utility model, the light-emitting hole 410 is composed of a first through hole 411 and a second through hole 412 arranged sequentially in a vertical direction; the first through hole 411 is located above the second through hole 412 and is connected to the second through hole 412; the cross-sectional size of the first through hole 411 is larger than the cross-sectional size of the second through hole 412; the filter plate 500 is disposed in the first through hole 411 and covers the second through hole 412.
[0044] The cross-sections of the first through hole 411 and the second through hole 412 are both circular, but the cross-sectional size of the first through hole 411 is larger than that of the second through hole 412, so that the filter plate 500 is located inside the first through hole 411 and can cover the second through hole 412. The light emitted by the first light source 200 and the second light source 300 needs to pass through the second through hole 412 and through the filter plate 500, and then the light enters the receiving groove 112. By setting the light outlet hole 410 with a stepped structure, the filtering effect can be guaranteed.
[0045] Specifically, the central axes of the first through hole 411 and the second through hole 412 are coaxially arranged; the cross-section of the filter plate 500 is also circular to fit the first through hole 411.
[0046] Reference Figure 3 and Figure 4 In some embodiments of this utility model, multiple light-emitting holes 410 are all oriented upwards, and the orientation of the multiple light-emitting holes 410 is parallel to the axial direction of the vertical axis, so as to improve the uniformity of light reflected by the reflective layer 120 and avoid the situation of local over-brightness when light shines on the diamond.
[0047] Reference Figure 3 and Figure 4 In some embodiments of this utility model, the base 130 is further provided with a limiting boss 138, which is disposed on the side wall of the light outlet, and the annular reflector 400 is disposed on the limiting boss 138.
[0048] By setting the limiting boss 138, the position of the annular reflector 400 can be limited, improving the stability of the detection, and reducing the light leakage from the first light source 200 and the second light source 300, thereby reducing the impact on the detection process.
[0049] Reference Figures 1 to 3 In some embodiments of this utility model, a first mounting block 137 is provided on the periphery of the base 130, and a second mounting block 113 is provided on the periphery of the housing 110; the first mounting block 137 and the second mounting block 113 extend around the vertical axis and abut against each other.
[0050] By setting the first mounting block 137 and the second mounting block 113, external light can be blocked from entering the receiving groove 112 from between the housing 110 and the base 130, thus ensuring the detection effect.
[0051] In some embodiments of this utility model, a control component is also included; the control component is disposed on one side of the base 130 and is electrically connected to the first light source component and the second light source component respectively.
[0052] By setting up a control component, the first light source 200 and the second light source 300 can be started and stopped independently, and the brightness of the light emitted by the first light source 200 and the second light source 300 can be controlled to cooperate with the light camera detection module to perform grade detection and type judgment on diamonds.
[0053] Reference Figures 1 to 5 Specifically, diamond testing methods include the following steps:
[0054] S10. Simultaneously activate the first light source 200 and the second light source 300, and the camera detection module detects the diamond to determine its type.
[0055] S20. When the diamond is detected to be a high-color-grade diamond, the first light source 200 and the second light source 300 are activated simultaneously, and the camera detection module detects the diamond.
[0056] S30. When a diamond of a special color or a fluorescent type is detected, the first light source 200 and the second light source 300 are activated simultaneously, and the camera detection module detects the diamond.
[0057] White light emitted from the first light source 200 shines on the diamond, allowing the camera detection module to receive the reflected light and the detected image to determine the diamond's type. Purple light emitted from the second light source 300 shines on the diamond to determine if it exhibits fluorescence. When the camera detection module detects a high-color diamond, the true color grade can be determined solely by the white light emitted from the first light source 200. When the camera detection module detects a diamond with a special color or fluorescence, the true color grade can be determined using both the white light emitted from the first light source 200 and the purple light emitted from the second light source 300. This method effectively distinguishes between the naturalness of the diamond's color and whether it has undergone any enhancement treatment. By first determining the diamond type and then performing diamond testing based on that type, the efficiency of the testing process can be improved.
[0058] Diamonds will exhibit color changes under both white light and ultraviolet light. Diamonds with special colors or those that have undergone enhancement treatments, such as yellow and pink diamonds, can be tested using both white light and ultraviolet light simultaneously. Since natural yellow diamonds may exhibit inertness under ultraviolet light (i.e., no fluorescence), while irradiated yellow diamonds may show a strong fluorescence reaction, simultaneously activating the first light source 200 and the second light source 300 can improve the accuracy of the detection. Therefore, after detecting and screening diamonds with fluorescence using only white light and ultraviolet light, the diamonds are then tested by simultaneously illuminating them with both white light and ultraviolet light.
[0059] White light provides illumination close to natural light, used to observe the color of diamonds under normal light to determine their basic color grade. Ultraviolet light, on the other hand, reveals the fluorescence properties of diamonds. When some diamonds exhibit fluorescence, simultaneous illumination under both white and ultraviolet light helps to more comprehensively assess the impact of fluorescence on their color. Specifically, diamonds with strong blue fluorescence may appear whitish under white light, but by combining the fluorescence intensity and color observed under ultraviolet light, the camera detection module can more accurately determine their true color grade in the absence of fluorescence interference.
[0060] For diamonds with special colors or those that may have undergone enhancement treatments, using both white light and ultraviolet light sources can help detect the origin of their color. Natural diamonds and artificially treated diamonds may exhibit different fluorescence reactions under ultraviolet light. For example, natural pink diamonds may have specific fluorescence characteristics under ultraviolet light, while pink diamonds that have undergone irradiation or other treatments may show different fluorescence features. By comparing the color appearance under white light and the fluorescence characteristics under ultraviolet light, it is helpful to determine the naturalness of the diamond's color and whether it has undergone enhancement treatments, thereby enabling more accurate color grading.
[0061] In some embodiments of this utility model, the illuminance of the first light source 200 is greater than or equal to 1200 lux and less than or equal to 2000 lux, the color temperature of the first light source 200 is greater than or equal to 6300 and less than or equal to 6700, and the irradiance of the second light source 300 is 0.1 MW / CM², so as to ensure the detection effect.
[0062] Specifically, the color rendering index of the first light source 200 and the second light source 300 reaches 93 or higher.
[0063] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A testing device for grading diamonds, characterized in that, include: The outer casing (100) includes a housing (110), a reflective layer (120), and a base (130); the housing (110) is provided with a first opening (111) and a receiving groove (112); the receiving groove (112) is located at the bottom of the housing (110), and the wall surface of the receiving groove (112) is a semi-circular surface; the reflective layer (120) is located on the wall surface of the receiving groove (112); the first opening (111) is located at the top of the housing (110) and is arranged through the vertical axis; the first opening (111) is connected to the receiving groove (112); the base (130) is located at the opening of the receiving groove (112) and abuts against the bottom of the housing (110); the base (130) is provided with a second opening (131) and a ring The base (130) has a groove (132) and an annular opening (133); the second through-hole (131) is disposed through the vertical axis and is disposed opposite to and spaced apart from the first through-hole (111); the annular groove (132) extends around the vertical axis; the annular opening (133) is disposed at the top of the base (130) and is disposed opposite to and spaced apart from the reflective layer (120), and is connected to the annular groove (132); an annular protrusion (134) is disposed on the bottom wall of the annular groove (132), the annular protrusion (134) extends around the vertical axis, and the annular protrusion (134) is spaced apart from the two inner sidewalls opposite to the annular groove (132) to define the formation of a first annular groove (135) and a second annular groove (136). A first light source (200) is disposed within the first annular groove (135); the first light source (200) is used to emit white light; The second light source (300) is disposed within the second annular groove (136); the second light source (300) is used to emit violet light; An annular reflector (400) is disposed at the annular opening (133) and abuts against the top of the annular protrusion (134); the annular reflector (400) is provided with a light-emitting hole (410), which is disposed through the vertical direction; multiple light-emitting holes (410) are provided, and are respectively connected to the first annular groove (135) and the second annular groove (136); Multiple filters (500) are provided, and each filter is disposed at one of the multiple light-emitting holes (410); A camera detection module is located above the first port (111); the detection end of the camera detection module is set toward the first port (111).
2. The testing device for diamond grading according to claim 1, characterized in that, The first annular groove (135) is located on the side of the second annular groove (136) away from the vertical axis.
3. The testing device for diamond grading according to claim 1, characterized in that, A plurality of light-emitting holes (410) are arranged at intervals around the vertical axis; the plurality of light-emitting holes (410) are respectively a first light-emitting hole (420) and a second light-emitting hole (430); the plurality of first light-emitting holes (420) are located above the first annular groove (135) and are connected to the first annular groove (135); the plurality of second light-emitting holes (430) are located above the second annular groove (136) and are connected to the second annular groove (136); the number of first light-emitting holes (420) is greater than the number of second light-emitting holes (430).
4. The testing device for diamond grading according to claim 1, characterized in that, The light-emitting aperture (410) is composed of a first through hole (411) and a second through hole (412) arranged sequentially in the vertical direction; the first through hole (411) is located above the second through hole (412) and is connected to the second through hole (412); the cross-sectional size of the first through hole (411) is larger than the cross-sectional size of the second through hole (412); the filter plate is disposed in the first through hole (411) and covers the second through hole (412).
5. The testing device for diamond grading according to claim 1, characterized in that, The plurality of light-emitting holes (410) are all oriented upwards, and the orientation of the plurality of light-emitting holes (410) is parallel to the axial direction of the vertical axis.
6. The testing device for diamond grading according to claim 1, characterized in that, The base (130) is also provided with a limiting boss (138), which is located on the side wall of the light-emitting hole (410), and the annular reflector (400) is located on the limiting boss (138).
7. The testing device for diamond grading according to claim 1, characterized in that, The base (130) is provided with a first mounting block (137) on its periphery, and the housing (110) is provided with a second mounting block (113) on its periphery; the first mounting block (137) and the second mounting block (113) extend around the vertical axis and abut against each other.
8. The testing device for diamond grading according to claim 1, characterized in that, It also includes a control component; the control component is disposed on one side of the base (130) and is electrically connected to the first light source (200) and the second light source (300) respectively.
9. The testing device for diamond grading according to claim 1, characterized in that, The filter plate is an ultraviolet filter.
10. The testing device for diamond grading according to claim 2, characterized in that, The first annular groove is disposed horizontally on the side of the second annular groove away from the vertical axis, and the first light source and the second light source are located on the same horizontal plane.