Transmission-type intelligence-developing spectrometer

Abstract

The utility model discloses a transmission-type intelligence-developing spectrograph, which belongs to the technical field of spectrographs and comprises a transmission-type spectrograph assembly. The transmission-type intelligence development spectrometer assembly further comprises a splicing foundation plate for installing the transmission-type intelligence development spectrometer assembly, and the upper surface of the splicing foundation plate is provided with a protrusion array which is transversely and longitudinally distributed; along a light path, the transmission assembly comprises a slit module, a reflector module, a transmission grating module and a CCD module. The bottoms of the slit module, the reflector module, the transmission grating module and the CCD module are all provided with bases matched with the protrusion arrays on the splicing base plate. According to the utility model, the bottoms of the slit module, the reflector module, the transmission grating module and the CCD module are all provided with the bases which are matched with the projection arrays on the splicing base plate, so that random and rapid lap joint among the modules can be realized according to requirements, the problem that a traditional spectrometer cannot be flexibly adjusted and autonomously assembled is solved, and the spectrometer has relatively strong practicability.

Description

Technical Field

[0001] This utility model belongs to the field of spectrometer technology, specifically relating to a transmission-type educational spectrometer using modular assembly. Background Technology

[0002] Spectroscopic analysis is a technique that accurately identifies and analyzes spectral characteristics based on the absorption or reflection properties of substances to light of specific wavelengths. This technique is non-destructive, highly sensitive, and highly selective, and can be better applied to experimental measurements in various environments, including visible and near-infrared light. However, traditional spectroscopic equipment is complex to manufacture, and its components are usually fixed or highly adjustable but cannot be disassembled, which greatly limits its widespread use in modern scientific research and production. Furthermore, traditional spectroscopic equipment is often bulky and cumbersome, making it difficult to meet modern needs. Even though some portable spectrometers have appeared on the market, they still suffer from fixed internal components and limited practical application scenarios, failing to meet the current needs of teaching, research, and production. Simplifying the spectrometer structure and solving the problems of difficult self-assembly of internal components and bulky, portable nature of traditional spectrometers are currently the main challenges in spectrometer manufacturing. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model adopts a modular design structure to realize a transmission-type intelligent spectrometer, which solves the problems of traditional spectrometers being unable to be flexibly adjusted and self-assembled and being bulky.

[0004] This utility model provides a transmissive educational spectrometer, including a transmissive spectrometer assembly; characterized in that it further includes a splicing base plate for mounting the transmissive educational spectrometer assembly, and a protrusion array is provided on the upper surface of the splicing base plate; the protrusion array includes M*N cylindrical protrusions distributed horizontally and vertically; M and N are both natural numbers greater than 2; along the optical path, the transmissive educational spectrometer assembly includes: a slit module, a mirror module, a transmission grating module, and a CCD module;

[0005] The bottom of the slit module, mirror module, transmission grating module, and CCD module are all provided with bases that cooperate with the raised array on the splicing base plate.

[0006] The light receiving surface of the CCD module is parallel to the grating surface of the transmission grating module.

[0007] The slit width of the slit module ranges from 0.01 mm to 2.5 mm.

[0008] Furthermore, the slit module includes:

[0009] Two parallel clamping plates are inserted into the upper surface of the splicing base plate;

[0010] A left slit plate and a right slit plate are provided, the left slit plate and the right slit plate are engaged between two clamping plates, and the top of the left slit plate is provided with a rectangular protruding sliding handle;

[0011] The thickness of the left and right slit plates is equal to the distance between the two clamping plates.

[0012] The gap width between the left and right slit plates ranges from 0.05 mm to 2 mm.

[0013] Furthermore, the reflector module includes:

[0014] The system comprises a reflector, an L-shaped rotating base plate, a reflector support plate, and a reflector base; wherein the back of the reflector is fixedly connected to the vertical surface of the L-shaped rotating base plate, the bottom of the L-shaped rotating base plate has a circular groove, the upper surface of the reflector support plate has a cylindrical boss at the right end, and the L-shaped rotating base plate is fitted and connected to the cylindrical boss of the reflector support plate through its circular groove; the lower surface of the reflector base has a cylindrical groove that mates with the cylindrical boss; the bottom left end of the reflector support plate is inserted and fixed to the upper surface of the reflector base.

[0015] Furthermore, the transmission grating module includes a transmission grating, a grating rotation module, a second insertion base, and a square base. The left end of the second insertion base is inserted into the upper surface of the grating rotation module, and the transmission grating is inserted into the upper surface of the right end of the second insertion base. The bottom of the grating rotation module is provided with a circular groove, and the upper surface of the square base is provided with a cylindrical protrusion. The grating rotation module is inserted into the cylindrical protrusion on the upper surface of the square base through the circular groove. Both the upper and lower surfaces of the transmission grating are provided with protrusions.

[0016] The grating has a line density of 1350 lines / mm; the grating rotation module can rotate 360 ​​degrees in all directions.

[0017] Furthermore, the CCD module includes a CCD and a second insertion base. The CCD is inserted into the upper left surface of the second insertion base, and the CCD is parallel to the transmission grating. The CCD is selected from any one of full-frame transmission CCD, frame transmission CCD, and interline transfer CCD, and the CCD is equipped with a USB interface.

[0018] Furthermore, in the protrusion array, the distance between two adjacent horizontal and / or vertical protrusions is equal, the center-to-center distance between two adjacent horizontal protrusions is 8mm, the center-to-center distance between two adjacent vertical protrusions is 8mm, and the protrusions are selected from any one of cylinder, cuboid, cube, and polygonal prism.

[0019] Furthermore, the effective operating wavelength range of the transmission-type intellectual spectrometer is 400nm to 1100nm.

[0020] Furthermore, the direction of light incident on the slit is defined as the 0° normal. When the reflecting or incident surfaces of all optical elements face the incident slit, it is considered to be in a 0° state. Clockwise rotation is positive, and counterclockwise rotation is negative. During detection, the vertical distance between the center of the mirror module and the center of the slit module is 74.8 mm, and the working angle range of the mirror module is 0° to 90°. The distance between the center of the transmission grating module and the center of the mirror module is 54.1 mm, and the working angle range of the transmission grating module is +45° to -45° of the central axis. The distance between the center of the CCD module and the center of the transmission grating module is 39.4 mm, and the working angle range of the CCD module when coaxial with the transmission grating module is +90° to +135°.

[0021] Compared with the prior art, the present invention has at least the following advantages:

[0022] The transmission-type intelligent spectrometer adopts a modular overlapping design, allowing users to flexibly adjust the model of components and change the position and angle of each component according to their needs, thereby assembling different types of spectrometers. When some components are damaged, they can be easily replaced to complete the repair, significantly improving the ease of equipment maintenance. In addition, this overlapping assembly method not only makes the spectrometer easy to carry and use in various scenarios, but also allows researchers to gain a deeper understanding of its working principle and structure during the assembly process, thereby improving their ability to use and master the instrument. Attached Figure Description

[0023] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0024] Figure 1 This is a structural diagram of the transmissive science toy in a preferred embodiment of the present invention;

[0025] Figure 2 This is a structural diagram of the slit module in a preferred embodiment of the present invention;

[0026] Figure 3 This is a structural diagram of the reflector module in a preferred embodiment of the present invention;

[0027] Figure 4 This is a structural diagram of the transmission grating and CCD module in a preferred embodiment of the present invention.

[0028] Among them, 1-slit module; 2-reflector module; 3-transmission grating module; 4-CCD module; splicing base plate 53; 11-clamping plate; 12-left slit plate; 13-right slit plate; 121-sliding handle; 21-reflector; 22-L-shaped rotating base plate; 23-reflector support plate; 24-reflector base; 31-transmission grating can be installed; 32-grating rotating module; 41-plug-in CCD; 55-second plug-in base; 56-square base. Detailed Implementation

[0029] For ease of understanding, the transmissive science toy device of this utility model will be described more comprehensively below, and embodiments of this utility model will be given, but this does not limit the scope of this utility model.

[0030] A transmission-type educational spectrometer includes, in sequence along the optical path: a slit module 1, a mirror module 2, a transmission grating module 3, and a CCD module 4.

[0031] To facilitate in-depth research on the spectrometer structure and enable portable assembly and disassembly, this application adopts a modular overlapping design structure, such as... Figure 1 As shown:

[0032] First, a splicing base plate is selected, and horizontal and vertical protrusions are set on its upper surface. Second, the slit module 1, the mirror module 2, the transmission grating module 3, and the CCD module 4 are respectively equipped with plug-in bases corresponding to these protrusions. Finally, researchers can plug the slit module 1, the mirror module 2, the transmission grating module 3, and the CCD module 4 into the upper surface of the splicing base plate 53 as needed.

[0033] The advantages of portable disassembly are:

[0034] It can adjust the position and angle between different components as needed, thereby creating various types of spectrometers;

[0035] It can replace individual components as needed to create spectrometers with multiple parameters, and can also replace specific damaged components.

[0036] The modular construction process enables researchers to gain a deeper understanding and knowledge of the performance and principles of spectrometers.

[0037] To achieve the adjustment of the angle between the modules, the following structure is adopted in this embodiment:

[0038] For a spectrometer, when a beam of light (usually parallel light) is directed towards a slit, according to the Huygens-Fresnel principle, the slit acts as a new wave source. Each point on the wavefront can be considered a point source emitting secondary waves. These secondary waves interfere with each other, producing alternating bright and dark patterns. Designing the slit module 1 as the first component through which light enters the spectrometer not only reduces stray light and improves the signal-to-noise ratio but also effectively controls the light flux entering the system, improving spectral resolution and enhancing the spectrometer's sensitivity. Figure 2 The slit module 1 includes two parallel clamping plates 11, a left slit plate 12, and a right slit plate 13. The two clamping plates 11 are inserted into the upper surface of the splicing base plate 53. The width between the clamping plates 11 is equal to the width of the left slit plate 12 and the right slit plate 13. The left slit plate 12 and the right slit plate 13 are fixed by being inserted into the gap formed between the two clamping plates 11. The top of the left slit plate 12 has a rectangular protruding sliding handle 121, which helps to adjust the slit distance by sliding. In use, the slit width is controlled by sliding the left slit plate 12 and the right slit plate 13.

[0039] As a further option, the gap width between the left slit plate 12 and the right slit plate 13 is selected from 0.01 mm to 2.5 mm.

[0040] As a further option, the gap width between the left slit plate 12 and the right slit plate 13 is selected from 0.05mm to 2mm.

[0041] The reflector in a spectrometer is a key optical component, playing a crucial role in guiding, focusing, and controlling the optical path. Designing the reflector base as a rotatable mount significantly enhances the flexibility of the reflector 21 and broadens the application range of the spectrometer. Figure 3 The reflector module 2 includes a reflector 21, an L-shaped rotating base plate 22, a reflector support plate 23, and a reflector base 24. The back of the reflector 21 is connected to the vertical surface of the L-shaped rotating base plate 22. The bottom of the L-shaped rotating base plate 22 has a cylindrical groove. The right end of the upper surface of the reflector support plate 23 has a cylindrical protrusion. The L-shaped rotating base plate 22 is inserted into the cylindrical protrusion of the reflector support plate 23 through the cylindrical groove. The bottom left end of the reflector support plate 23 is inserted into the upper surface of the reflector base 24. The reflector module 2 can be adjusted by horizontally twisting the L-shaped rotating base plate 22.

[0042] As a further option, the reflector module 2 can achieve 360-degree rotation in all directions.

[0043] A transmission grating is an important optical element, typically made of a transparent material (such as glass or plastic) with numerous parallel, equally spaced grooves etched on its surface. When incident light passes through the transmission grating, each groove acts as a secondary light source, emitting diffracted light. These diffracted lights interfere with each other in space, dispersing the incident light into different beams according to wavelength (or frequency), thereby enabling spectral analysis and measurement. A CCD (Charge-Coupled Device) is a semiconductor device composed of a series of closely packed metal-oxide-semiconductor capacitors, typically arranged in a one-dimensional or two-dimensional array. Each capacitor (pixel) can capture and store the charge generated by photons. When light shines on the CCD surface, photons are absorbed by the semiconductor material, generating electron-hole pairs. Electrons are captured and stored in the charge trap of each pixel. Through a series of clock signals, these charges can be transmitted along the CCD array, eventually read out and converted into voltage signals. By placing the transmission grating module 3 at the front end of the plug-in CCD 41, it is possible to effectively avoid... Eliminating stray light during transmission improves system signal integrity. Furthermore, when the CCD is at an angle to the optical path, the minimum resolution increases with the angle; the resolution is optimal when the CCD is perpendicular to the optical path. Therefore, placing the transmission grating module 3 at the front of the inserted CCD 41 ensures the optical path entering the inserted CCD 41 is perpendicular to it, thus improving the spectrometer's output quality. The design of the grating rotation module 32 allows the CCD module 4 to rotate horizontally synchronously around the transmission grating module 3, greatly enhancing the flexibility of the spectrometer components and broadening its application scenarios. Figure 4 The transmission grating module 3 includes a transmission grating 31, a grating rotation module 32, a second insertion base 55, and a square base 56. The left end of the second insertion base 55 is inserted into the upper surface of the grating rotation module 32, and the transmission grating 31 is inserted into the upper surface of the right end of the second insertion base 55. The bottom of the grating rotation module 32 has a cylindrical groove, and the upper surface of the square base 56 has a cylindrical protrusion. The grating rotation module 32 is inserted into the cylindrical protrusion on the upper surface of the square base 56 through the cylindrical groove. The transmission grating 31 has protrusions at both the top and bottom, and the transmission grating module 3 can be adjusted in angle by horizontally twisting the grating rotation module 32.

[0044] As a further embodiment, the line density of the transmission grating 31 is 1350 lines / mm.

[0045] As a further embodiment, the transmission grating 31 has protrusions on both the top and bottom.

[0046] As a further embodiment, the grating rotation module 32 can achieve 360-degree rotation in all directions.

[0047] As a further option, such as Figure 4The CCD module 4 includes a plug-in CCD 41 and a second plug-in base 55. The plug-in CCD 41 is plugged into the upper left surface of the second plug-in base 55. The CCD 41 screen is parallel to the transmission grating 31. The CCD module 4 rotates around the transmission grating module 3, and rotates by the horizontally twisting grating rotation module 32.

[0048] As a further option, the plug-in CCD41 is selected from any one of full-frame transmission CCD, frame transmission CCD, and interline transfer CCD.

[0049] As a further option, the CCD41 is connected via a direct USB connection.

[0050] The assembly process of traditional spectrometers is often too complex, which undoubtedly increases the cost of their production and application. By introducing splicing modules with horizontal and vertical protrusions, researchers can quickly build a spectrometer by combining the splicing modules. First, this application designs a crisscrossing protrusion structure on the upper surface of the base plate, and the distance between two adjacent horizontal / vertical protrusions is equal. The smaller the distance between the protrusions, the more precise the distance adjustment. However, too small a distance will affect the physical shell interference between two adjacent modules. Therefore, the center distance between two adjacent horizontal protrusions is 8mm, and the center distance between two adjacent vertical protrusions is 8mm. The protrusions are selected from any one of cylinders, cuboids, cubes, and polygonal prisms.

[0051] In summary, this utility model not only retains the core technologies of traditional spectrometers, but also greatly improves practicality and flexibility through modular design.

[0052] During testing, with the direction of the light incident on the slit as the 0° normal, all optical elements are in a 0° state when their reflecting / incident surfaces face the slit. Clockwise rotation is positive, and counterclockwise rotation is negative. The vertical distance between the center of mirror module 2 and the center of slit module 1 is 74.8 mm, and the working angle range of mirror module 2 is 0° to 90°. The distance between the center of transmission grating module 3 and the center of mirror module 2 is 54.1 mm, and the working angle range of transmission grating module 3 is +45° to -45° of its central axis. The distance between the center of CCD module 4 and the center of transmission grating module 3 is 39.4 mm, and the working angle range of CCD module 4 when coaxial with transmission grating module 3 is +90° to +135°.

[0053] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions, and variations to the above embodiments within the scope of the present invention. Furthermore, without contradiction, those skilled in the art can combine and integrate different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A transmission-type educational spectrometer, comprising a transmission spectrometer assembly; characterized in that, It also includes a splicing base plate (53) for mounting the transmission-type intellectual spectrometer assembly, and a protrusion array is provided on the upper surface of the splicing base plate (53); the protrusion array includes M*N cylindrical protrusions distributed horizontally and vertically. M and N are both natural numbers greater than 2; along the optical path, the transmissive intelligent spectrometer assembly includes: a slit module (1), a mirror module (2), a transmission grating module (3), and a CCD module (4); At the bottom of the slit module (1), mirror module (2), transmission grating module (3), and CCD module (4), there is a base that cooperates with the protrusion array on the splicing base plate (53); The light receiving surface of the CCD module (4) is parallel to the grating surface of the transmission grating module (3); The slit width of the slit module (1) ranges from 0.01 mm to 2.5 mm.

2. The transmission-type brain-training spectrometer according to claim 1, characterized in that, The slit module (1) includes: Two parallel clamping plates (11) are inserted into the upper surface of the splicing base plate (53); A left slit plate (12) and a right slit plate (13) are provided. The left slit plate (12) and the right slit plate (13) are engaged between two clamping plates (11). The top of the left slit plate (12) is provided with a rectangular protruding sliding handle (121). The thickness of the left slit plate (12) and the right slit plate is equal to the distance between the two clamping plates (11); The gap width between the left slit plate (12) and the right slit plate (13) ranges from 0.05 mm to 2 mm.

3. The transmission-type brain-training spectrometer according to claim 1, characterized in that, The reflector module (2) includes: The reflector (21), L-shaped rotating base plate (22), reflector support plate (23), and reflector base (24) are provided. The back of the reflector (21) is fixedly connected to the vertical surface of the L-shaped rotating base plate (22). The bottom of the L-shaped rotating base plate (22) is provided with a circular groove. The right end of the upper surface of the reflector support plate (23) is provided with a cylindrical boss. The L-shaped rotating base plate (22) is fitted and connected to the cylindrical boss of the reflector support plate (23) through its circular groove. The lower surface of the reflector base (24) is provided with a cylindrical groove that matches the cylindrical boss. The bottom left end of the reflector support plate (23) is inserted and fixed to the upper surface of the reflector base (24).

4. The transmission-type brain-training spectrometer according to claim 1, characterized in that, The transmission grating module (3) includes a transmission grating (31), a grating rotation module (32), a second insertion base (55), and a square base (56). The left end of the second insertion base (55) is inserted into the upper surface of the grating rotation module (32), and the transmission grating (31) is inserted into the upper surface of the right end of the second insertion base (55). The bottom of the grating rotation module (32) is provided with a circular groove, and the upper surface of the square base (56) is provided with a cylindrical protrusion. The grating rotation module (32) is inserted into the cylindrical protrusion on the upper surface of the square base (56) through the circular groove. The upper and lower surfaces of the transmission grating (31) are both provided with protrusions. The grating (31) has a line density of 1350 lines / mm; the grating rotation module (32) can rotate 360 ​​degrees in all directions.

5. The transmission-type brain-training spectrometer according to claim 1, characterized in that, The CCD module (4) includes a CCD (41) and a second insertion base (55). The CCD (41) is inserted into the upper left surface of the second insertion base (55). The CCD (41) is parallel to the transmission grating (31). The CCD (41) is selected from any one of full-frame transmission CCD, frame transmission CCD and interline transfer CCD. The CCD (41) is equipped with a USB interface.

6. The transmission-type brain-training spectrometer according to claim 1, characterized in that, In the protrusion array, the distance between two adjacent horizontal and / or vertical protrusions is equal, the center-to-center distance between two adjacent horizontal protrusions is 8 mm, and the center-to-center distance between two adjacent vertical protrusions is 8 mm. The protrusions are selected from any one of cylinder, cuboid, cube, and polygonal prism.

7. The transmission-type brain-training spectrometer according to claim 1, characterized in that, The effective operating wavelength range of the transmission-type psychic spectrometer is 400nm to 1100nm.

8. The transmission-type brain-training spectrometer according to claim 1, characterized in that, The direction of light entering the slit is defined as the 0° normal. When the reflecting or incident surfaces of all optical elements face the slit, it is considered to be in the 0° state. The angle is positive when rotating clockwise and negative when rotating counterclockwise. When testing, the vertical distance between the center of the mirror module (2) and the center of the slit module (1) is 74.8 mm, and the working angle range of the mirror module (2) is 0° to 90°. The distance between the center of the transmission grating module (3) and the center of the mirror module (2) is 54.1 mm, and the working angle range of the transmission grating module (3) is +45° to -45° of the central axis. The distance between the center of the CCD module (4) and the center of the transmission grating module (3) is 39.4 mm, and the working angle range of the CCD module (4) when coaxial with the transmission grating module (3) is +90° to +135°.

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