CN210953817U - Portable gem fluorescence analyzer - Google Patents

Abstract

The utility model discloses a portable gem fluorescence analyzer, which comprises a spectrometer, an optical fiber probe and an analysis device, wherein the spectrometer comprises a light source device with a built-in LED lamp, a spectrometer body and a shell, and the light source device and the spectrometer body are both arranged in the shell; the optical fiber probe is used for collecting optical signals and is connected with the spectrometer through an optical fiber; the analysis device is electrically connected with the spectrometer body and is used for determining the attribute of the detected piece; the spectrometer is characterized in that a long-wave pass filter is arranged in the spectrometer body and used for filtering exciting light, so that only fluorescence enters the spectrometer body. The light source device and the spectrometer body of the utility model are both arranged in the shell, are of an integral structure, are convenient to use, and adopt LED lamps, and have good performance and long service life; in addition, a long-wave pass filter is added, so that the interference of stray light can be avoided, and the detected fluorescence spectrum signal is improved.

Description

Portable gem fluorescence analyzer

Technical Field

The utility model relates to a spectral analysis field especially relates to a portable precious stone fluorescence analysis appearance.

Background

The spectral analysis method has very wide application in the field of gem crystal, researchers at home and abroad mainly adopt analytical methods such as micro-Raman spectrum, X-ray fluorescence spectrum, ultraviolet visible near infrared spectrum, Fourier transform infrared spectrum (FTIR) and the like to identify the jade nowadays, but equipment adopting the analytical methods not only has large shape, but also has high cost, so the application of the methods in the aspect of gem identification is limited.

The small portable spectrometer has the characteristics of rapidness, flexibility and the like, and meets the detection requirements of experimenters on in-situ and rapidness, so that the small portable spectrometer is more and more applied to the field of material detection; however, the portable fluorescence spectrum analyzer on the market does not include a light source, and a user generally needs to adjust the focus point of the light source and the position of the optical fiber of the spectrum analyzer for receiving signal light during testing, so that the operation is inconvenient. Moreover, the cost of the separated light source of the reflection type fluorescence spectrometer in the market is higher.

On the other hand, the main accessories of the reflection type fluorescence spectrometer on the market are a blazed grating and an ultraviolet-sensitized CCD (charge coupled device), both the blazed grating and the ultraviolet-sensitized CCD are signals for improving the detected fluorescence spectrum, but the configuration causes the cost of the spectrometer to be high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a portable gem fluorescence analyzer, wherein a light source is arranged in a spectrometer, and the light source adopts an LED lamp, so that the analyzer has the advantages of low cost, good monochromaticity, stable light source performance and longer service life; in addition, a long-wave pass filter is added in the spectrometer body, the long-wave pass filter has high cut-off depth, the interference of stray light, such as scattered light of a light source, can be effectively avoided, and the detected fluorescence spectrum signal is improved.

The utility model also provides a portable precious stone fluorescence analysis appearance, it includes:

the spectrometer comprises a light source device with an LED lamp arranged inside, a spectrometer body and a shell, wherein the light source device and the spectrometer body are arranged in the shell;

the optical fiber probe is used for collecting optical signals and is connected with the spectrometer through an optical fiber; exciting light of the LED lamp is transmitted to the optical fiber probe through the optical fiber probe, the exciting light is transmitted to the detected piece through the optical fiber probe to excite the detected piece to generate fluorescence, the optical fiber probe collects the exciting light and the fluorescence, and the exciting light and the fluorescence enter the spectrometer body through the optical fiber;

the analysis device is electrically connected with the spectrometer body and used for determining the attribute of the detected piece;

the spectrometer body comprises a long-wave pass filter, a receiving port for receiving optical signals is formed in a shell, and the long-wave pass filter is installed in the shell and is close to the receiving port; an incident slit is arranged between the receiving port and the long-wave pass filter and used for adjusting the imaging resolution of the optical signal in the spectrometer body; the excitation light and the fluorescence penetrate through the long-wave pass filter, and then the residual fluorescence enters the spectrometer body.

The utility model discloses an among the portable precious stone fluorescence analysis appearance, output port has still been seted up on the shell, and optic fibre includes Y type optic fibre, and Y type optic fibre is including probing end and branching end, and fiber probe is connected to the probing end, and the branching end is output port and receiving port connected respectively.

The utility model discloses an among the portable precious stone fluorescence analysis appearance, light source device includes mount pad and coupling lens group, and the LED lamp passes through the mount pad to be installed on the shell, and the setting of coupling lens group is between LED lamp and output port, and coupling lens group will arouse light coupling in Y type optic fibre and convey to fiber probe.

The utility model discloses an among the portable precious stone fluorescence analysis appearance, the light source device still includes first radiating part and first louvre, and one side at the LED lamp is installed to first radiating part, and first louvre is seted up on the shell, and the heat that the LED lamp produced is through first louvre discharge shell under the effect of first radiating part.

The utility model discloses an among the portable precious stone fluorescence analysis appearance, be provided with the level crossing on the fiber optic probe, the level crossing is used for transmitting the exciting light to being detected on the piece.

The utility model discloses an among the portable precious stone fluorescence analysis appearance, long wave pass filter is 405nm long wave pass filter, and 405nm long wave pass filter is used for filtering the exciting light.

The utility model discloses an among the portable precious stone fluorescence analysis appearance, this internal collimation component that is provided with of spectrum appearance, collimation component and 405nm long wave pass through the optical filter and set up relatively, and the collimation component includes collimating mirror and first base, and the collimating mirror passes through first pedestal mounting on the inner wall of shell, and the collimating mirror makes the fluorescence through 405nm long wave pass through the optical filter become the parallel light.

The utility model discloses an among the portable precious stone fluorescence analysis appearance, this internal chromatic dispersion component that is provided with of spectrum appearance, chromatic dispersion component setting are on the reverberation way of collimation speculum, and chromatic dispersion component includes grating and second base, and the grating passes through the second pedestal mounting on the inner wall of shell, and the grating makes the parallel light through the collimation speculum disperse into many light beams according to the wavelength.

The utility model discloses an among the portable precious stone fluorescence analysis appearance, this internal focusing element that is provided with of spectrum appearance, focusing element set up on the reflection light path of grating, and focusing element includes focusing mirror and third base, and focusing mirror passes through the third pedestal mounting on the inner wall of shell, and focusing mirror is used for the light beam after the focus dispersion for the light beam after the focus forms a series of images on the focal plane, and wherein each is like the point and is corresponding to a specific wavelength.

In the portable gem fluorescence analyzer of the utility model, the spectrometer body also comprises a CCD detector which is arranged on the focal plane and is used for measuring the light intensity of each wavelength image point; the CCD detector is connected with the analysis device.

The embodiment of the utility model provides a portable precious stone fluorescence analysis appearance, light source device and spectrum appearance body all set up in the shell, structure as an organic whole, need not carry on the debugging of the focus point of light source like this when using, it is more simple and convenient to operate; in addition, the light source device adopts the LED lamp, so that the monochromaticity is good, the performance of the light source is stable, the cost is low and the service life is long; on the other hand, a long-wave pass filter is added at the light incident position of the spectrometer body, so that the interference of stray light, such as scattered light from a light source, can be effectively avoided, and the detected fluorescence spectrum signal is improved. The utility model discloses a portable precious stone fluorescence analysis appearance simple structure, it is more convenient to use, has still practiced thrift the cost greatly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a portable gemstone fluorescence analyzer according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart of the light signal in the portable gemstone fluorescence analyzer of FIG. 1;

FIG. 3 is a schematic diagram of the Y-shaped fiber of FIG. 1;

FIG. 4 is a schematic diagram illustrating a flow of optical signal routing of the light source apparatus of FIG. 1;

FIG. 5 is a schematic structural view of the spectrometer body of FIG. 1;

FIG. 6 is a schematic flow chart of the optical signal within the spectrometer body of FIG. 5;

FIG. 7 is a schematic diagram of the light signal of FIG. 6;

FIG. 8 is a schematic view of the mounting structure of the 405nm long-wave pass filter of FIG. 5;

FIG. 9 is a schematic structural view of the stent of FIG. 8;

FIG. 10 is a schematic diagram of the fiber optic probe of FIG. 1;

FIG. 11 is a schematic diagram of a spectral curve of the fiber optic probe of FIG. 1 using a flat mirror;

FIG. 12 is a schematic diagram of the spectral curve of the fiber optic probe of FIG. 11 using a focusing lens.

Description of reference numerals:

100. a portable gemstone fluorescence analyzer;

10. a spectrometer; 101. a housing; 102. an output port; 103. a receive port;

11. a spectrometer body; 111. an entrance slit; 112. a 405nm long-wave pass filter; 1121. mounting blocks; 1122. a support bar; 1123. a nut; 113. a collimating element; 1131. a collimating mirror; 1132. a first base; 114. a dispersive element; 1141. a grating; 1142. a second base; 115. a focusing element; 1151. a focusing mirror; 1152. a third base; 116. a CCD detector; 117. an analog-to-digital converter; 118. a second heat sink; 119. a second heat dissipation hole;

12. a light source device; 121. an LED lamp; 122. a mounting seat; 123. a coupling lens group; 124. driving by a power supply; 125. a first heat sink; 126. a first heat dissipation hole;

20. a Y-shaped optical fiber; 21. a Y-shaped optical fiber body; 22. a launch fiber splice; 23. receiving an optical fiber splice; 24. detecting the optical fiber connector;

30. a fiber optic probe; 31. a fiber optic probe body; 32. a connection port; 33. a plane mirror;

40. an analysis device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1-2, a portable gem fluorescence analyzer 100 includes a spectrometer 10, a fiber probe 30 and an analyzer 40, wherein the spectrometer 10 includes a light source device 12 with a built-in LED lamp 121, a spectrometer body 11 and a housing 101, and the light source device 12 and the spectrometer body 11 are both disposed in the housing 101, so that the light source device 12 and the spectrometer body 11 are integrally disposed, and a light source focus point does not need to be adjusted during testing, which is simpler and more convenient.

The optical fiber probe 30 is used for collecting optical signals, and the optical fiber probe 30 is connected with the spectrometer 10 through an optical fiber; the excitation light of the LED lamp 121 is transmitted to the optical fiber probe 30 through the optical fiber, and then the excitation light is transmitted to the detected object through the optical fiber probe 30, so that the detected object can be excited to generate fluorescence, the excitation light and the fluorescence can be collected by the optical fiber probe 30, and the collected excitation light and the collected fluorescence enter the spectrometer body 11 through the optical fiber.

The analysis device 40 is electrically connected to the spectrometer body 11, and the analysis device 40 is used for determining the property of the detected piece.

In this embodiment, the spectrometer body 11 includes a long-wave pass filter, a receiving port 103 is opened on the housing 101 for receiving the light signal, and the long-wave pass filter is installed in the housing 101 and close to the receiving port 103, so that the light entering from the receiving port 103 is filtered by the long-wave pass filter, the excitation light and the fluorescence only remain after passing through the long-wave pass filter, and the fluorescence advances in the spectrometer body 11 according to the incident light path of the light.

Further, an entrance slit 111 is provided between the receiving port 103 and the long-wave pass filter, and the entrance slit 111 is used to adjust the imaging resolution of the optical signal within the spectrometer body 11.

After the technical scheme is adopted, the light source device 12 and the spectrometer body 11 are both arranged in the shell 101 and are of an integrated structure, so that the debugging of a light source focus point is not needed when the spectrometer is used, and the operation is simpler and more convenient; in addition, the light source device 12 adopts the LED lamp 121, which not only has good monochromaticity and stable light source performance, but also has low cost and long service life; on the other hand, a long-wave pass filter is added at the light incident position of the spectrometer body 11, so that the interference of stray light, such as scattered light from a light source, can be effectively avoided, and the detected fluorescence spectrum signal is improved. The utility model discloses a portable precious stone fluorescence analysis appearance 100 simple structure, it is more convenient to use, has still practiced thrift the cost greatly.

Referring to fig. 1 and fig. 3, in an alternative embodiment, an output port 102 and a receiving port 103 are formed on a housing 101, and in this embodiment, an optical fiber is a Y-shaped optical fiber 20, the Y-shaped optical fiber 20 includes a Y-shaped optical fiber body 21, a detecting end and a branch end, the detecting end and the branch end are respectively disposed on an end surface of the Y-shaped optical fiber body 21, where the branch end includes a transmitting end and a receiving end; specifically, a detection optical fiber connector 24 is arranged on the detection end, and the detection optical fiber connector 24 is connected with an optical fiber probe 30; a transmitting optical fiber connector 22 is arranged on the transmitting end, and the transmitting optical fiber connector 22 is connected with the output port 102; and a receiving optical fiber connector 23 is provided on the receiving end, and the receiving optical fiber connector 23 is connected to the receiving port 103. The optical fiber is a light transmission medium, the optical fiber can freely guide light, the optical splitter adopting the Y-shaped optical fiber 20 is more suitable for measuring the reflection spectrum, more optical fiber ports are not required to be arranged on the optical fiber probe 30, and convenience is brought to manufacturing and use.

Referring to fig. 4, in an alternative embodiment, the light source device 12 and the spectrometer body 11 are both disposed in the housing 101, the light source device 12 is located above the spectrometer body 11, and the light source device 12 and the spectrometer body 11 are separated from each other and do not interfere with each other.

One of the commonly used light sources of the commercially available reflectance type fluorescence spectrometer 10 is an ultraviolet broad spectrum light source, such as a deuterium lamp; the wavelength range of light emitted by the deuterium lamp is generally a continuous spectral band of 190-400 nm, the wide-spectrum light source is selected as exciting light, and monochromatic light can be filtered out by using a monochromatic filter to meet the requirement; another commonly used light source is a laser that can generate ultraviolet light; the spectrometer 10 formed by both sources is relatively costly.

In this embodiment, the light source of the light source device 12 is a 365nm light emitting diode, which not only has good monochromaticity, but also has stable light source performance; in addition, the 365nm LED lamp 121 is low in cost and long in service life, and meets the requirements of the reflection type fluorescence spectrometer 10 on a light source.

Referring to fig. 4, in an alternative embodiment, the light source device 12 includes a mounting base 122 and a coupling lens group 123, the LED lamp 121 is mounted on the housing 101 through the mounting base 122, in addition, the coupling lens group 123 is disposed between the LED lamp 121 and the output port 102, the coupling lens group 123 couples the excitation light into the emission fiber connector 22 of the Y-shaped fiber 20, and transmits the excitation light to the fiber probe 30 through the Y-shaped fiber 20; also, a power supply drive 124 is provided in the light source device 12 for supplying power to the LED lamp 121.

In this embodiment, the light source device 12 further includes a first heat dissipation member 125 and a first heat dissipation hole 126, the first heat dissipation member 125 is installed at one side of the LED lamp 121, the first heat dissipation hole 126 may be opened on the housing 101 around the light source, the number of the first heat dissipation holes 126 is not limited herein, and the heat generated by the LED lamp 121 is exhausted from the housing 101 through the first heat dissipation hole 126 under the action of the first heat dissipation member 125; for example, the first heat dissipation member 125 may be a heat dissipation fan or an exhaust fan.

On the other hand, referring to fig. 5, a second heat dissipation member 118 and a second heat dissipation hole 119 are disposed in the spectrometer body 11, the second heat dissipation member 118 is installed at one side of the analog-to-digital converter 117, and the second heat dissipation hole 119 may be disposed on the casing 101 around the analog-to-digital converter 117, where the number is not limited herein; heat generated in the spectrometer body 11 can be exhausted through the second heat dissipation hole 119 via the second heat dissipation member 118; for example, the second heat dissipation member 118 may be a heat dissipation fan or an exhaust fan.

Referring to fig. 10-12, in an alternative embodiment, a flat mirror 33 is disposed on the fiber-optic probe 30, and the flat mirror 33 is used for transmitting the excitation light to the detected object. In this embodiment, the transparent flat mirror 33 is used to replace the traditional focusing lens, because the fluorescence spectrum of the gemstone is very strong, and when the light entering the spectrometer 10 is too strong, the recognition software is very easy to saturate, which is not good for forming the correct spectrum, therefore, the flat mirror 33 is used to replace the traditional focusing lens, which not only has good detection effect, but also has lower cost. As shown in fig. 11 and 12, fig. 11 is a normal fluorescence spectrum after using the plane mirror 33, and fig. 12 is a fluorescence spectrum in a saturated state after using the focusing lens, and the saturated fluorescence spectrum is not beneficial to the identification and reading of the fluorescence of the gemstone.

On the other hand, referring to fig. 1 and 10, the optical fiber probe 30 includes an optical fiber probe body 31, a connection port 32 is disposed on the optical fiber probe body 31, and the connection port 32 is connected to the detection optical fiber connector 24 of the Y-shaped optical fiber 20; moreover, the optical fiber probe 30 in the embodiment can be held by hands, can detect a sample conveniently at multiple angles, is suitable for various scenes, and is more convenient to use.

Referring to fig. 5-7, in an alternative embodiment, the long-wave pass filter is a 405nm long-wave pass filter 112, and the 405nm long-wave pass filter 112 is used for filtering the excitation light of the light source. The 405nm long-wave pass filter 112 has a high cut-off depth, so that the interference of stray light, such as scattered light of a light source, can be effectively avoided, and the detected fluorescence spectrum signal is improved.

Referring to fig. 8-9, in an alternative embodiment, the housing 101 has a mounting hole formed therein, the mounting hole is close to the receiving port 103, a holder is mounted in the mounting hole, and the 405nm long-wave pass filter 112 is mounted on the holder.

Specifically, the bracket comprises a supporting rod 1122 and a mounting block 1121, wherein the supporting rod 1122 is adjustably arranged in a mounting hole, the supporting rod 1122 can be a threaded rod, a thread matched with the supporting rod 1122 is arranged in the mounting hole, the supporting rod 1122 and the mounting hole are adjustably connected through the thread, and finally the supporting rod is locked and fixed through a nut 1123; the mounting block 1121 is disposed on the support rod 1122, and the side surface of the mounting block 1121 is C-shaped, so that clamping blocks are disposed on both sides of the mounting block 1121, and the 405nm long-wave pass filter 112 can be clamped tightly, so that the mounting is more stable.

In this embodiment, the inner surface of the mounting block 1121 is provided with soft rubber, and the soft rubber has certain elasticity and can elastically deform within a certain range, so that the 405nm long-wave pass filter 112 is more stably mounted in the C-shaped mounting block 1121, and meanwhile, the soft rubber can also play a role in protection, so that the mounting block is safer and more reliable. In addition, the 405nm long-wave pass filter 112 may be installed in the housing 101 by other methods, and the present invention is not limited thereto.

Referring to fig. 5 to 7, in an alternative embodiment, a collimating element 113 is disposed in the spectrometer body 11, the collimating element 113 includes a collimating mirror 1131 and a first base 1132, the collimating mirror 1131 is mounted on the inner wall of the housing 101 through the first base 1132, and the collimating mirror 1131 is disposed opposite to the 405nm long-wave pass filter 112, so that the fluorescence passing through the 405nm long-wave pass filter 112 directly reaches the collimating mirror 1131, and the fluorescence becomes parallel light under the action of the collimating mirror 1131.

Referring to fig. 5-7, in an alternative embodiment, a dispersion element 114 is disposed in the spectrometer body 11, the dispersion element 114 is disposed on a reflection light path of the collimating mirror 1131, the collimating mirror 1131 has an incident light from the 405nm long-wave pass filter 112 and a reflection light at a certain angle with the incident light, and the dispersion element 114 is disposed on the reflection light path, so that the dispersion element 114 can receive the light reflected from the collimating mirror 1131.

In the present embodiment, the dispersion element 114 includes a grating 1141 and a second base 1142, the grating 1141 is mounted on the inner wall of the housing 101 through the second base 1142, and the grating 1141 disperses the parallel light passing through the collimating mirror 1131 into a plurality of light beams.

Referring to fig. 5-7, in an alternative embodiment, the focusing element 115 is disposed in the spectrometer body 11, the focusing element 115 is disposed on the reflected light path of the grating 1141, there are an incident light and a reflected light at an angle with the incident light on the grating 1141, and the focusing element 115 is disposed on the reflected light path, so that the focusing element 115 can receive the light reflected from the grating 1141.

In this embodiment, the focusing element 115 includes a focusing mirror 1151 and a third base 1152, the focusing mirror 1151 is mounted on the inner wall of the housing 101 through the third base 1152, and the focusing mirror 1151 is used for focusing the dispersed light beam, so that the focused light beam forms a series of images of the incident slit 111 on the focal plane, wherein each image point corresponds to a specific wavelength.

Referring to fig. 3-5, in an alternative embodiment, the spectrometer body 11 further includes a CCD detector 116, the CCD detector 116 is disposed on the focal plane of the imaging, and the CCD detector 116 is used to measure the light intensity of each wavelength image point; the CCD detector 116 is connected to an analog-to-digital converter 117, the analog-to-digital converter 117 is mounted in the housing 101, an analog signal of the fluorescence is converted into a digital signal by the analog-to-digital converter 117, and the analog-to-digital converter 117 is connected to the analyzing device 40, and finally the attribute of the detected object is determined by the analyzing device 40.

The detection of a gemstone by the portable gemstone fluorescence analyzer 100 includes the steps of:

s1, starting an LED lamp 121 in the spectrometer 10, coupling a light source into an emission optical fiber joint 22 on a Y-shaped optical fiber 20 through a coupling lens group 123, transmitting the light source to an optical fiber probe 30 through the Y-shaped optical fiber 20, and enabling the light source to penetrate through a plane mirror 33 on the optical fiber probe 30 onto a detected piece, wherein the detected piece is placed on a sample table, and the sample table hardly causes interference on detection;

s2, when the LED lamp 121 is excited by the exciting light, electrons of the detected object transition from a low energy level to a high energy level, and at this time, the high energy level is an unstable energy level, and the electrons return to the low energy level again, which is represented as energy released after absorbing energy, wherein a part of the energy is released in the form of light, that is, fluorescence is generated; the fluorescence and the excitation light can be collected by the optical fiber probe 30, and reach the spectrometer body 11 through the Y-shaped optical fiber 20;

s3, a 405nm long-wave pass filter 112 is arranged at a receiving port 103 of the spectrometer body 11, after fluorescence and exciting light are filtered by the 405nm long-wave pass filter 112, only fluorescence is left to reach a collimating mirror 1131, and the collimating mirror 1131 converts the fluorescence into parallel light;

s4, the parallel light reaches the grating 1141, and the grating 1141 disperses the parallel light into a plurality of light beams according to the wavelength;

s5, the multiple light beams arrive at the focusing mirror 1151 to focus the dispersed light beams, so that the light beams form a series of images of the entrance slit 111 on the focal plane, wherein each image point corresponds to a specific wavelength;

s6, measuring the light intensity of each wavelength image point by the CCD detector 116 on the focal plane, and converting the analog signal of the optical signal into a digital signal by the analog-to-digital converter 117;

s7, the digital signal is transmitted to the analyzer 40, and the analyzer 40 determines the property of the detected object.

The portable gem fluorescence analyzer 100 provided by the utility model, the light source device 12 and the spectrometer body 11 are all arranged in the shell 101, and the portable gem fluorescence analyzer is designed in an integrated manner, so that the focusing point of the light source is not required to be adjusted every time, and the operation is more convenient; the 365nm LED lamp 121 is adopted as the light source device 12, so that the monochromaticity is good, the light source performance is stable, the cost is low, and the service life is long; in addition, a long-wave pass filter with the wavelength of 405nm is added at the light incident position of the spectrometer body 11, so that the interference of stray light, such as scattered light from a light source, can be effectively avoided, and the detected fluorescence spectrum signal is improved. Moreover, the conventional focusing lens is replaced by the plane mirror 33 on the optical fiber probe 30, the excitation light collected by the plane mirror 33 can be just filtered by the long-wave pass filter with the wavelength of 405nm, the detection effect is good, and the conventional focusing lens is adopted, so that a certain amount of excitation light is still left after the excitation light is filtered by the long-wave pass filter 112 with the wavelength of 405nm due to the fact that the focusing lens is more than the excitation light collected by the plane mirror 33, and the detection effect is influenced; in addition, the manufacturing cost of using the plane mirror 33 is cheaper, and the cost is effectively saved.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A portable gemstone fluorescence analyzer, comprising:

the spectrometer comprises a light source device with an LED lamp arranged inside, a spectrometer body and a shell, wherein the light source device and the spectrometer body are arranged in the shell;

the optical fiber probe is used for collecting optical signals and is connected with the spectrograph through an optical fiber; the exciting light of the LED lamp is transmitted to the optical fiber probe through the optical fiber, the exciting light is transmitted to a detected piece through the optical fiber probe so as to excite the detected piece to generate fluorescence, the optical fiber probe collects the exciting light and the fluorescence, and the exciting light and the fluorescence enter the spectrometer body through the optical fiber;

the analysis device is electrically connected with the spectrometer body and used for determining the attribute of the detected piece;

the spectrometer body comprises a long-wave-pass optical filter, a receiving port for receiving the optical signal is formed in the shell, and the long-wave-pass optical filter is installed in the shell and is close to the receiving port; an incident slit is arranged between the receiving port and the long-wavelength-pass filter and used for adjusting the imaging resolution of the optical signal in the spectrometer body; and the excitation light and the fluorescence penetrate through the long-wave pass filter, and then the residual fluorescence enters the spectrometer body.

2. The portable gemstone fluorescence analyzer of claim 1, wherein the housing further defines an output port, the optical fiber includes a Y-shaped optical fiber, the Y-shaped optical fiber includes a probe end and a branch end, the probe end is connected to the optical fiber probe, and the branch end is respectively connected to the output port and the receiving port.

3. A portable gemstone fluorescence analyzer according to claim 2, wherein the light source device includes a mounting base through which the LED lamp is mounted on the housing, and a coupling lens group disposed between the LED lamp and the output port, the coupling lens group coupling the excitation light into the Y-fiber and transmitting to the fiber probe.

4. A portable gemstone fluorescence analyzer according to claim 3, wherein the light source device further includes a first heat dissipating member and a first heat dissipating hole, the first heat dissipating member is installed at one side of the LED lamp, the first heat dissipating hole is opened on the housing, and heat generated by the LED lamp is discharged out of the housing through the first heat dissipating hole under the effect of the first heat dissipating member.

5. A portable gemstone fluorescence analyzer as recited in claim 1, wherein a flat mirror is disposed on the fiber probe for transmitting the excitation light to the inspected piece.

6. A portable gemstone fluorescence analyzer according to claim 1, wherein the long wave pass filter is a 405nm long wave pass filter, the 405nm long wave pass filter being used to filter the excitation light.

7. A portable gemstone fluorescence analyzer as recited in claim 6, wherein the spectrometer body is provided with a collimating element therein, the collimating element being disposed opposite to the 405nm long-wavelength pass filter, the collimating element comprising a collimating mirror and a first mount, the collimating mirror being mounted on the inner wall of the housing through the first mount, the collimating mirror causing the fluorescence passing through the 405nm long-wavelength pass filter to become parallel light.

8. The portable gemstone fluorescence analyzer of claim 7, wherein a dispersion element is disposed within the spectrometer body, the dispersion element being disposed on a reflected light path of the collimating mirror, the dispersion element including a grating and a second mount, the grating being mounted on an inner wall of the housing through the second mount, the grating causing the parallel light passing through the collimating mirror to be dispersed into a plurality of beams by wavelength.

9. A portable gemstone fluorescence analyzer according to claim 8, wherein a focusing element is provided within the spectrometer body, the focusing element being disposed in the reflected light path of the grating, the focusing element comprising a focusing mirror and a third mount, the focusing mirror being mounted on the inner wall of the housing via the third mount, the focusing mirror being adapted to focus the dispersed light beam such that the focused light beam forms a series of images at a focal plane, wherein each image point corresponds to a specific wavelength.

10. The portable gemstone fluorescence analyzer of claim 9, further comprising a CCD detector in the spectrometer body, the CCD detector being disposed on the focal plane, the CCD detector being configured to measure light intensity of each wavelength image point; the CCD detector is connected with the analysis device.

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