Multi-type ground object spectrum observation clamp

Abstract

The invention belongs to the technical field of spectrum observation, and particularly relates to a multi-type ground object spectrum observation clamp which comprises a clamping piece, an observation cavity assembly and a clamping assembly. The clamping piece is of a plate-shaped structure, a through hole is formed in the side wall of the clamping piece, the observation cavity assembly comprises an upper cavity and a lower cavity, the close sides of the upper cavity and the lower cavity are open, a placement gap is formed between the upper cavity and the lower cavity, the clamping piece is inserted into the placement gap, and the lower side of the clamping piece is detachably connected with the lower cavity; the clamping assembly comprises an upper clamping plate and a lower clamping plate which are oppositely arranged, the upper clamping plate is fixedly connected with the upper cavity, the lower clamping plate is fixedly connected with the lower cavity, the upper clamping plate is rotationally connected with the lower clamping plate, the upper cavity is provided with a reflection hole, a first light inlet hole and a second light inlet hole, the first light inlet hole and the second light inlet hole are located in the two opposite sides of the reflection hole, and a light filtering assembly is arranged at the first light inlet hole. And a transmission hole is formed in the lower cavity. The device can better adapt to samples of different types, different shapes and different sizes, the application range is wider, and better universality is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of spectral observation, and in particular relates to a fixture for spectral observation of multiple types of ground objects. Background Art

[0002] In the field of spectral observation, especially in remote sensing, ecological monitoring, environmental science and other research, spectral fixtures are used to stably and accurately clamp target objects (such as plants, soil, minerals, etc.) to cooperate with spectral detection equipment to measure sample spectra. According to the type of ground objects and the types of existing spectral observation fixtures, the commonly used fixtures include plant leaf spectral observation fixtures, soil spectral observation fixtures, and mineral spectral observation fixtures.

[0003] However, the existing fixtures for spectral observation are mostly designed for a single type of ground objects, such as special fixtures for plant leaves, soil samples or mineral samples. These special fixtures usually rely on fixed-shaped clips and cannot adapt to samples of different sizes and shapes. In particular, when dealing with some special-shaped samples, the existing equipment requires additional accessories or does not have sufficient flexibility, which makes it impossible to flexibly adapt to different types of ground objects and cannot achieve cross-type ground object measurement. For example, the LI-250A Light Meter (LI-COR) model of plant leaf spectral measurement light meter, the fixture it is equipped with is usually used to fix plant leaves or other plant parts for spectral measurement. Their common forms include clips, frames and fixing frames, etc., which can usually only clamp leaves or plant tissues with similar structures to leaves. They are designed specifically for plant leaves and cannot be used for the observation of other ground objects (such as soil, minerals, etc.). In addition, these fixtures have high requirements for leaf morphology and are only suitable for relatively regular leaf morphology. For curved or non-standard leaves, the fixing effect is poor, which may lead to measurement errors; they lack flexibility and cannot adapt to the needs of different leaf thicknesses or growth stages. Another example is the SCS-200 soil spectrometer, which is used to measure the spectral characteristics of soil and surface soil. The fixture it is equipped with is usually only suitable for soil samples of certain sizes or shapes, while the soil surface is usually rough and irregular, resulting in the fixture being unable to effectively adapt to different soil types and particle sizes, causing large measurement errors and affecting data accuracy. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the purpose of the present invention is to provide a multi-type ground object spectral observation fixture that can better adapt to the use of samples of different types, shapes and sizes, has a wider range of adaptability and better versatility.

[0005] The technical solution of the present invention is:

[0006] A multi-type ground object spectral observation fixture, comprising:

[0007] The clamp is a plate-like structure with a through hole on its side wall, and the clamp is used to place the sample to be observed;

[0008] The observation chamber assembly comprises an upper chamber and a lower chamber, wherein the upper chamber and the lower chamber are both opened on one side thereof, and a placement gap is provided between the two, the clip is inserted in the placement gap, and the lower side of the clip is detachably connected to the lower chamber;

[0009] The clamping assembly includes an upper clamping plate and a lower clamping plate which are arranged opposite to each other. The upper clamping plate is fixedly connected to the upper cavity, and the lower clamping plate is fixedly connected to the lower cavity. The upper clamping plate and the lower clamping plate are rotatably connected. The upper cavity and the clamping sheet can be separated and fitted by relative rotation.

[0010] Preferably, the lower splint includes a first connecting section and a second connecting section, one end of the second connecting section is fixedly connected to the lower cavity, and the other end is fixedly connected to the first connecting section and the two have an angle, and the first connecting section and the second connecting section are rotatably connected to the upper splint at the angle, and when the clip is in contact with the upper cavity, an angle is formed between the first connecting section and the upper splint, and the second connecting section is parallel to the upper splint.

[0011] Preferably, a connecting groove is provided at the connection between the upper cavity and the upper clamping plate, the connecting groove is opposite to the second connecting section, one end of the upper clamping plate is inserted into the connecting groove and the two are fixedly connected, and the lower surface of the upper clamping plate is flush with the side of the upper cavity facing the clamping piece, and the upper clamping plate and the second connecting section are used to clamp the clamping piece when the upper cavity is in contact with the clamping piece.

[0012] Preferably, a positioning structure is provided between the clip and the lower cavity, and the positioning structure comprises:

[0013] A plurality of connection seats are arranged at the edges of the clip, the upper ends of the connection seats are fixedly connected to the clip, and the lower ends are clamped in corresponding clamping grooves on the side wall of the lower cavity;

[0014] A plurality of fastening bolts correspond one to one with the given connecting seats, and the fastening bolts are used to fix the connecting seat to the lower cavity.

[0015] Preferably, a locking assembly is further provided between the upper clamping plate and the lower clamping plate, and the locking assembly is used to fix the relative position of the upper clamping plate and the lower clamping plate.

[0016] Preferably, the clip has a rectangular or circular shape.

[0017] Preferably, a reflective hole is provided on the side of the upper cavity opposite to the opening, and a first light entrance hole and a second light entrance hole are respectively provided on two sides of the upper cavity opposite to the reflective hole, and the first light entrance hole and the second light entrance hole are both inclined toward the axial direction of the reflective hole, and a transmission hole is provided on the side wall of the lower cavity opposite to the clip, and when the upper cavity and the clip are turned to fit together, the axes of the reflective hole, the transmission hole and the through hole on the clip coincide, and the axes of the first light entrance hole and the second light entrance hole both intersect with the through hole on the clip.

[0018] Preferably, a diffuse reflection plate is also provided in the through hole on the clip.

[0019] Preferably, a filter component is further provided at one end of the first light entrance hole located outside the upper cavity, and the filter component is used to adjust the wavelength of light entering from the first light entrance hole.

[0020] Preferably, the filter assembly comprises:

[0021] An adjustment sleeve, fixedly connected to the upper cavity, wherein a side of the adjustment sleeve close to the upper cavity is communicated with the first light entrance hole, and a side of the adjustment sleeve away from the upper cavity is provided with a third light entrance hole coaxial with the first light entrance hole;

[0022] Multiple adjustment plates are inserted into the adjustment sleeve, and the multiple adjustment plates are arranged in sequence along the axial direction of the first light entrance hole. Each of the adjustment plates is provided with multiple light-through holes in the direction perpendicular to the axis of the first light entrance hole, and a filter is installed in each of the light-through holes.

[0023] Compared with the prior art, the multi-type ground object spectral observation fixture of the present invention has the following beneficial effects:

[0024] 1. The present invention utilizes the hollow structure of the clamping piece and the upper cavity to form a placement space above the clamping piece, so that samples of different sizes and shapes can be flexibly adapted. At the same time, the rotation of the upper clamping plate and the lower clamping plate makes it easy to open and close the upper cavity and the lower cavity, and also facilitates the disassembly and installation of the clamping piece, so as to better adapt to the placement of samples such as plant leaves, soil, and minerals, thereby increasing the versatility of the equipment and making the operation simple and convenient.

[0025] 2. The present invention can adjust the wavelength of the incident light source through the design of the filter component, which is convenient for effectively distinguishing the light from the fluorescence band during the detection process, ensuring that the fluorescence signal of the ground object can be accurately collected, and greatly improving the sensitivity and accuracy of fluorescence measurement;

[0026] 3. Through the design of the first light entrance hole and the second light entrance hole, the present invention can manually adjust the incident direction of the light source as needed to ensure that both natural light and artificial light sources can accurately illuminate the sample, greatly improving the adaptability and flexibility of the equipment and enabling more accurate spectral measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the overall structure in an embodiment of the present invention;

[0028] Figure 2 A longitudinal sectional view of the overall structure in an embodiment of the present invention;

[0029] Figure 3 A three-dimensional diagram of the overall structure of the embodiment of the present invention from a first viewing angle;

[0030] Figure 4 It is a stereoscopic diagram of the overall structure from a second viewing angle in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0033] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] See also Figure 1-2 As shown, in order to better adapt to the use of samples of different types, shapes and sizes, the scope of application is expanded to make it more versatile to cooperate with the spectrometer to realize the collection of the spectrum of the object to be detected. This embodiment provides a multi-type ground object spectrum observation fixture, including a clip, an observation cavity assembly and a clamping assembly. The clip is a plate-like structure with a through hole on its side wall, and the clip has a variety of shapes such as rectangular and circular; the observation cavity assembly includes an upper cavity and a lower cavity, and the sides of the upper cavity and the lower cavity are both open, and a placement gap is provided between the two, the clip is inserted in the placement gap, and the lower side of the clip is detachably connected to the lower cavity; the clamping assembly includes an upper splint and a lower splint arranged relatively to each other, the upper splint is fixedly connected to the upper cavity, the lower splint is fixedly connected to the lower cavity, and the upper splint is rotatably connected to the lower splint.

[0035] When in use, the upper clamp and the lower clamp realize the opening and closing of the upper cavity and the lower cavity through relative rotation, that is, the separation and fitting of the opening end of the upper cavity and the clamp are realized, so that it is not only convenient to place the sample to be observed on the clamp, but also the opening of the upper cavity is convenient for the installation and replacement of the clamp. Furthermore, when in use, the clamp is combined with the hollow structure of the upper cavity, so that a relatively wide and unobstructed placement space can be formed above the clamp, so that samples of different sizes and shapes can be flexibly adapted. Preferably, different samples can be better adapted to the placement of samples such as plant leaves, soil, and minerals by replacing different combinations of the hollow structure of the clamp and the upper cavity. In addition, when the furniture is clamping some bent or rolled leaves, the leaves can be flattened and the clamp and the upper cavity can be used to fix the leaves, which increases the versatility of the equipment and is simple and convenient to operate.

[0036] See also Figure 1 As shown, further, in order to facilitate the replacement of different clips and the placement and removal of samples. The lower splint includes a first connecting section and a second connecting section, one end of the second connecting section is fixedly connected to the lower cavity, and the other end is fixedly connected to the first connecting section and the two have an angle, and the angle between the first connecting section and the second connecting section is rotatably connected to the upper splint, and when the clip is fitted with the upper cavity, an angle is formed between the first connecting section and the upper splint, and the second connecting section is parallel to the upper splint. When in use, the first connecting section of the lower splint is rotated around the rotation axis between it and the upper splint. When the second connecting section rotates in the direction of the upper splint, it is convenient to separate the upper cavity and the clip. When the second connecting section rotates in the direction away from the upper splint, it is convenient for the upper cavity and the clip to be closely fitted, so that the upper cavity, the lower cavity and the clip cooperate to form a light-tight space for spectral observation.

[0037] See also Figure 1 As shown, further, in order to improve the stability of the clip, it is ensured that the sample to be observed on the clip is stably placed on the clip during use to improve the accuracy of the detection. A connecting groove is provided at the connection between the upper cavity and the upper clamping plate, and the connecting groove is opposite to the second connecting section. One end of the upper clamping plate is inserted into the connecting groove and the two are fixedly connected, and the lower surface of the upper clamping plate is flush with the side of the upper cavity facing the clip. The upper clamping plate and the second connecting section are used to clamp the clip when the upper cavity is in contact with the clip. During use, when the upper cavity and the clip are tightly fitted, at this time, a clamping gap that is adapted to the thickness of the clip is formed between the upper surface of the second connecting section and the upper clamping plate, so that the second connecting section and the upper clamping plate further clamp the clip, which can better maintain the stability of the clip, so that the sample to be observed during the detection process is more stable on the clip.

[0038] See also Figure 1As shown, further, in order to improve the stability of the clip, it is ensured that the sample to be observed on the clip is stably placed on the clip during use to improve the accuracy of the detection. A positioning structure is provided between the clip and the lower cavity, and the positioning structure includes a plurality of connecting seats, which are arranged at the edge of the clip, the upper end of the connecting seat is fixedly connected to the clip, and the lower end is clamped in a corresponding slot on the side wall of the lower cavity; and each connecting seat is screwed and fixed to the side wall of the lower cavity by a fastening bolt, which is convenient for disassembly. Thereby, the stability of the clip can be better guaranteed during use.

[0039] See also Figure 1 As shown, further, in order to improve the stability of the clamp, it is ensured that the sample to be observed on the clamp is stably placed on the clamp during use to improve the accuracy of the detection. A locking assembly is also provided between the upper clamp and the lower clamp, and the locking assembly is used to fix the relative position of the upper clamp and the lower clamp. A preferred locking assembly can be provided with a ratchet pawl or a worm gear between the upper clamp and the lower clamp, and its self-locking characteristics can be used to maintain the relative stability of the upper clamp and the lower clamp during the working process. In this way, the upper clamp or the lower clamp can be installed on a tripod bracket or other similar stable brackets for use.

[0040] Furthermore, in order to cooperate with the spectrometer to detect the spectrum of ground objects, the present clamp is also provided with an optical path system. The specific optical path system includes a reflection hole on the side of the upper cavity opposite to the opening, and the upper cavity is respectively provided with a first light entrance hole and a second light entrance hole on two sides opposite to the reflection hole, and the first light entrance hole and the second light entrance hole are inclined to the axis direction of the reflection hole, and a transmission hole is provided on the side wall opposite to the clip. When the upper cavity and the clip are turned to fit together, the axes of the reflection hole, the transmission hole and the through hole on the clip coincide, and the axes of the first light entrance hole and the second light entrance hole intersect with the through hole on the clip.

[0041] See also Figure 1 As shown, further, in order to expand the scope of application of the clamp, a filter assembly is also provided at one end of the first light entrance hole located on the outer side of the upper cavity, and the filter assembly is used to adjust the wavelength of light entering from the first light entrance hole. Specifically, the filter assembly includes an adjustment sleeve and a plurality of adjustment plates. The adjustment sleeve is fixedly connected to the upper cavity, and the side of the adjustment sleeve close to the upper cavity is connected to the first light entrance hole, and the side of the adjustment sleeve away from the upper cavity is provided with a third light entrance hole coaxial with the first light entrance hole; multiple adjustment plates are inserted into the adjustment sleeve, and the multiple adjustment plates are sequentially arranged along the axial direction of the first light entrance hole, and each adjustment plate is provided with a plurality of light holes in the direction perpendicular to the axis of the first light entrance hole, and a filter is installed in each light hole. In addition, a diffuse reflection plate is also provided in the through hole on the clip, so that the light is more evenly distributed on the object with observation on the clip.

[0042] Therefore, the designed optical path system needs to be divided into two situations in actual operation: not using the filter component and using the filter component. The specific operation methods are as follows:

[0043] 1. When not using the filter component, complete the spectrum collection of different types of objects according to the following process

[0044] (1) Fix the fixture by holding it manually or connecting it to a tripod through the fixing holes on the upper or lower clamping plate. It should be noted that when collecting the spectrum of ground objects under natural light (such as sunlight), the fixture needs to be adjusted to keep the second light entrance hole consistent with the incident direction of the sun. If the spectrum of ground objects is obtained through an artificial light source, the artificial light source enters the cavity through the second light entrance hole, and the direction of the light source entering the cavity is manually adjusted to ensure that the incident light is consistent with the direction of the second light entrance hole. The filter assembly is sealed with special accessories to prevent other light sources from entering the cavity from the first light entrance hole.

[0045] (2) At the reflection hole and transmission hole, the SMA905 interface of the optical fiber connector is connected to one end of the optical fiber, and the other end of the optical fiber is connected to the spectrometer to collect the reflected and transmitted radiation signals of the ground object;

[0046] (3) After the fixture is fixed and the optical fiber is connected, the clip containing the reference white board is quickly fixed in the clamping gap between the upper cavity and the lower cavity, and the total incident intensity of the light source is collected by controlling the spectrometer through a computer;

[0047] (4) Remove the clip containing the reference whiteboard and replace it with a clip adapted for the specific object, place the object between the upper and lower cavities, and control the spectrometer through a computer to collect reflected light and transmitted light to obtain the reflection and transmission spectra of the object;

[0048] Since the transmitted radiation is negligible when the soil or mineral sample is thick, only the sample reflection spectrum needs to be tested. Therefore, during the soil and mineral spectrum test, the test fixture and sample need to be specially treated: the lower cavity of the fixture is disassembled and only the upper cavity is retained; the soil sample and mineral sample are prepared to ensure that the surface is as flat as possible, and the upper cavity is tightly fitted to the test sample, and then the spectral information of the ground object is tested according to steps (3) and (4).

[0049] 2. When using the filter assembly, follow the following process to complete the spectrum collection of different types of objects

[0050] Since the filter assembly includes at least three adjustment plates, each adjustment plate is provided with three light holes, that is, when in use, there are at least three filters between the first light entrance hole and the third light entrance hole. By selecting different filters on the three adjustment plates, the cutoff wavelength of the incident light source will be artificially changed, and then the reflection and transmission spectra of the objects with different incident light sources will be tested. Most importantly, by reasonably adjusting the wavelength of the incident light source, the incident light and the excited fluorescence band can be separated. For example, if the cutoff wavelength of the incident light through the filter is 650nm, then the radiation energy with a wavelength > 650nm reflected and transmitted by the object is the fluorescence signal released by the object, so that longer-band and higher-resolution fluorescence of the object can be obtained.

[0051] The specific operation process is as follows:

[0052] (1) Consistent with observation without using the filter component, after fixing the fixture, under artificial light source and natural light (such as sunlight), adjust the direction of the light source and the first light entrance hole and the third light entrance hole to be consistent; at the same time, use a special accessory to close the second light entrance hole to prevent other light sources from entering the cavity;

[0053] (2) The reflection hole and the transmission hole are connected to the spectrometer through optical fibers;

[0054] (3) Use a clip containing a reference white board to test the total radiation intensity of the incident light;

[0055] (4) Using a clip adapted to a specific object, collect the reflected light and transmitted light of the object to obtain the reflection and transmission spectrum of the object;

[0056] Consistent with observations without using a filter assembly, for thicker soil or mineral samples, special treatment of the test fixture and sample is also required, including removing the lower cavity and preparing the sample, and then further testing the spectral information of the object according to steps (3) and (4).

[0057] Through the above design and application, the present invention has the following advantages:

[0058] 1. The present invention utilizes the hollow structure of the clamp and the upper cavity to form a placement space above the clamp, so that samples of different sizes and shapes can be flexibly adapted. At the same time, the rotation of the upper clamp and the lower clamp makes it easy to open and close the upper cavity and the lower cavity, and also facilitates the disassembly and installation of the clamp, so as to better adapt to the placement of samples such as plant leaves, soil, and minerals, thereby increasing the versatility of the equipment and making the operation simple and convenient.

[0059] 2. The present invention can adjust the wavelength of the incident light source through the design of the filter component, which is convenient for effectively distinguishing it from the fluorescence band during the detection process, ensuring that the fluorescence signal of the ground object can be accurately collected, and greatly improving the sensitivity and accuracy of fluorescence measurement.

[0060] 3. Through the design of the first light entrance hole and the second light entrance hole, the present invention can manually adjust the incident direction of the light source as needed to ensure that both natural light and artificial light sources can accurately illuminate the sample, greatly improving the adaptability and flexibility of the equipment and enabling more accurate spectral measurement.

[0061] 4. The present invention is designed with a handheld operation mode, and can be fixed by a tripod bracket, which makes the operation more flexible and stable. Through these methods, users can quickly adjust and fix the equipment indoors or outdoors to ensure the stability of the measurement. Most existing equipment relies on complex brackets or bulky fixing methods, which may affect the smoothness of on-site operation.

[0062] In general, the device provided by the present invention can better adapt to the spectral observation of various ground samples such as plant leaves, soil, and minerals by virtue of the structural design of the clamp. The device significantly improves the accuracy and flexibility of spectral observation in many aspects by using precise filter components, adjustable wavelength of incident light from the light source, and flexible operation mode of the device. Through these innovative designs, the device can not only provide higher measurement accuracy, but also better adapt to the measurement needs of different ground objects, especially when conducting fluorescence observation, showing stronger advantages.

[0063] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A multi-type ground object spectral observation fixture, characterized in that: include: The clamp is a plate-like structure with a through hole on its side wall, and the clamp is used to place the sample to be observed; The observation chamber assembly comprises an upper chamber and a lower chamber, wherein the upper chamber and the lower chamber are both opened on one side thereof, and a placement gap is provided between the two, the clip is inserted in the placement gap, and the lower side of the clip is detachably connected to the lower chamber; The clamping assembly includes an upper clamping plate and a lower clamping plate which are arranged opposite to each other. The upper clamping plate is fixedly connected to the upper cavity, and the lower clamping plate is fixedly connected to the lower cavity. The upper clamping plate and the lower clamping plate are rotatably connected. The upper cavity and the clamping sheet can be separated and fitted by relative rotation.

2. A multi-type ground object spectral observation fixture according to claim 1, characterized in that: The lower splint includes a first connecting section and a second connecting section, one end of the second connecting section is fixedly connected to the lower cavity, and the other end is fixedly connected to the first connecting section and the two have an angle, and the first connecting section and the second connecting section are rotatably connected to the upper splint at the angle, and when the clip is in contact with the upper cavity, an angle is formed between the first connecting section and the upper splint, and the second connecting section is parallel to the upper splint.

3. A multi-type ground object spectral observation fixture according to claim 2, characterized in that: A connecting groove is provided at the connection between the upper cavity and the upper clamping plate, and the connecting groove is opposite to the second connecting section. One end of the upper clamping plate is inserted into the connecting groove and the two are fixedly connected, and the lower surface of the upper clamping plate is flush with the side of the upper cavity facing the clamping piece. The upper clamping plate and the second connecting section are used to clamp the clamping piece when the upper cavity is in contact with the clamping piece.

4. The multi-type ground object spectral observation fixture according to claim 1, characterized in that: A positioning structure is provided between the clip and the lower cavity, and the positioning structure comprises: A plurality of connection seats are arranged at the edges of the clip, the upper ends of the connection seats are fixedly connected to the clip, and the lower ends are clamped in corresponding clamping grooves on the side wall of the lower cavity; A plurality of fastening bolts correspond one to one with the given connecting seats, and the fastening bolts are used to fix the connecting seat to the lower cavity.

5. The multi-type ground object spectral observation fixture according to claim 1, characterized in that: A locking assembly is also provided between the upper clamping plate and the lower clamping plate, and the locking assembly is used to fix the relative positions of the upper clamping plate and the lower clamping plate.

6. The multi-type ground object spectral observation fixture according to claim 1, characterized in that: A reflective hole is provided on a side of the upper cavity opposite to the opening, a first light entrance hole and a second light entrance hole are respectively provided on two sides of the upper cavity opposite to the reflective hole, and the first light entrance hole and the second light entrance hole are both inclined toward the axial direction of the reflective hole, and a transmission hole is provided on the side wall of the lower cavity opposite to the clip, and when the upper cavity and the clip are turned to fit together, the axes of the reflective hole, the transmission hole and the through hole on the clip coincide, and the axes of the first light entrance hole and the second light entrance hole both intersect with the through hole on the clip.

7. The multi-type ground object spectral observation fixture according to claim 1, characterized in that: A diffuse reflection plate is also arranged in the through hole on the clip.

8. The multi-type ground object spectral observation fixture according to claim 6, characterized in that: A filter component is also provided at one end of the first light entrance hole located outside the upper cavity, and the filter component is used to adjust the wavelength of light entering from the first light entrance hole.

9. The multi-type ground object spectral observation fixture according to claim 8, characterized in that: The filter assembly comprises: An adjustment sleeve, fixedly connected to the upper cavity, wherein a side of the adjustment sleeve close to the upper cavity is communicated with the first light entrance hole, and a side of the adjustment sleeve away from the upper cavity is provided with a third light entrance hole coaxial with the first light entrance hole; Multiple adjustment plates are inserted into the adjustment sleeve, and the multiple adjustment plates are arranged in sequence along the axial direction of the first light entrance hole. Each of the adjustment plates is provided with multiple light-through holes in the direction perpendicular to the axis of the first light entrance hole, and a filter is installed in each of the light-through holes.

Images