Experimental device of grating spectrometer
By designing adjustable incident slit and exit slit joint plate structures in the grating spectrometer experimental device, the problem of low experimental efficiency caused by different beam irradiation paths is solved, and more efficient experimental data acquisition is achieved.
Patent Information
- Application Number
- CN202323641491.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-29
AI Technical Summary
In the existing grating spectrometer experimental device, the positions of the incident slit and exit slit are not easily changed, resulting in different beam irradiation paths and affecting the experimental efficiency.
A device including an experimental chassis and a movable chassis cover was designed. Through the use of the incident slit joint plate and the exit slit joint plate, the coupling of the connecting rod and the light shielding belt can be used to adjust the beam angle and improve the acquisition of experimental data. efficiency.
By conveniently adjusting the position of the incident light source and the blocking member, the beam angle is refined, which significantly reduces the time-consuming and improved experimental efficiency.
Smart Images
Figure CN222144316U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical electronic devices, in particular to an experimental device of a grating spectrometer. Background Art
[0002] A spectrometer is a basic instrument for detecting and analyzing photon wavelength or energy. It is widely used in the field of optoelectronics, among which the most widely used is the grating spectrometer.
[0003] Based on the principle of grating diffraction: , where d is the groove spacing of the grating, It corresponds to The wavelength of the diffraction order is The distribution angle of photons in space, is a constant related to the design of the optical system. =1, you can The first-order high-efficiency diffraction photons of the corresponding wavelength are obtained at the angular position; in the traditional grating monochromator design, the positions of the incident and exit slits are fixed and a mechanical transmission device is used to control the grating's orientation The wavelength can be scanned by rotating the lens.
[0004] However, the existing experimental device of the grating spectrometer has the following problems during use: since the illumination paths of the light beams generated by the incident slits and the exit slits at different positions are different, the detection structures generated are also different, and the positions of the incident slits and the exit slits in the existing experimental device are not easy to change, which affects the efficiency of the experiment. Therefore, it is necessary to design a corresponding technical solution to solve the existing technical problems. Utility Model Content
[0005] The purpose of the utility model is to provide an experimental device for a grating spectrometer, which solves the technical problem of affecting the efficiency of the experiment due to the different irradiation paths of the light beams generated by the incident slits and the exit slits at different positions, resulting in different detection structures, and the fact that the positions of the incident slits and the exit slits in the existing experimental equipment are not easy to change, thereby meeting actual use needs.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising an experimental case and a movable case cover, wherein a fixed platform is arranged inside the experimental case, two incident spherical reflectors are arranged on one end of the fixed platform, a grating is arranged on the other end of the fixed platform, two movable holes are arranged on one end of the fixed platform, and incident slit connecting plates and exit slit connecting plates are arranged on the movable holes at different positions, respectively, the fixed platform is provided with connecting grooves at the top and bottom of the movable holes, a connecting rod is arranged on the connecting groove, connecting blocks are arranged on one side of the incident slit connecting plate and the exit slit connecting plate, connecting holes are arranged between the two ends of the movable hole and the fixed platform, fixing boxes are arranged on both sides of the fixed platform, shading belts are arranged inside the fixing boxes at different positions and between the incident slit connecting plate and the exit slit connecting plate, an elastic belt is arranged between one end of the shading belt and the fixed box, an incident light source is arranged on the incident slit connecting plate, and a shielding member is arranged on the exit slit connecting plate.
[0007] As a preferred embodiment of the utility model, a plurality of anti-slip legs are installed at the bottom of the experimental case, the movable case cover is located at the top of the experimental case and is movably connected thereto, and the connecting piece between the movable case cover and the experimental case is located inside the experimental case.
[0008] As a preferred embodiment of the utility model, the top of the fixed platform is an embedded structure, the incident spherical reflector is an arc-shaped structure, the grating is located close to the incident slit plate, the height of the incident slit plate is higher than the exit slit plate, and the adjustable width of the incident slit plate and the adjustable width of the exit slit plate are both 0.01-1.0 mm.
[0009] As a preferred embodiment of the utility model, the connecting block is located on the connecting rod and is slidably connected therebetween, there is damping between the connecting block and the connecting rod, and two fastening studs are installed on both the incident slit connecting plate and the exit slit connecting plate and the ends are in contact with the connecting rod.
[0010] As a preferred embodiment of the utility model, the shading belt is located in the movable hole, and a hardened layer is provided on the top and bottom of the shading belt. The fixed box is provided with a guide pulley at a position close to the connecting hole, and the outer ring of the guide pulley is in contact with the shading belt, and the end of the elastic belt is fixedly connected to the fixed box.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0012] By using the incident slit plate and the exit slit plate and other components in coordination, the positions of the incident light source and the shielding member can be conveniently adjusted, thereby being able to more finely change the light beam incident on the incident spherical reflector and the angle of the light beam incident on the grating, so that the experimental data can be obtained well, and the adjustment efficiency is improved, thereby reducing the time consumption of the experimental adjustment, facilitating the experiment, and solving the problem affecting the efficiency of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is an overall schematic diagram of the utility model;
[0014] Figure 2 This is a structural diagram of the fixed platform described in the utility model;
[0015] Figure 3 This is a structural diagram of the movable hole described in the utility model;
[0016] Figure 4 This is a structural diagram of the fixing box of the utility model;
[0017] Figure 5 This is a structural diagram of the connection block described in the utility model;
[0018] Figure 6 This is a schematic diagram of the incident light beam described in the present invention.
[0019] In the figure: experimental case-1, fixed table-2, movable case cover-3, fixed box-4, grating-5, exit slit plate-6, shielding piece-7, incident slit plate-8, incident light source-9, shading belt-10, movable hole-11, connecting hole-12, guide pulley-13, connecting groove-14, elastic belt-15, connecting block-16, incident spherical reflector-17, connecting rod-18. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-6The utility model provides a technical solution: an experimental device of a grating spectrometer, comprising: an experimental case 1 and a movable case cover 3, a fixed platform 2 is arranged inside the experimental case 1, two incident spherical reflectors 17 are arranged at one end of the fixed platform 2, a grating 5 is arranged at the other end of the fixed platform 2, two movable holes 11 are arranged at one end of the fixed platform 2, and an incident slit connecting plate 8 and an exit slit connecting plate 6 are respectively arranged on the movable holes 11 at different positions, and the fixed platform 2 is provided with connecting grooves 14 at the top and bottom of the movable holes 11, and the connecting grooves 14 are arranged at the top and bottom of the movable holes 11. A connecting rod 18 is provided on the connecting groove 14, a connecting block 16 is provided on one side of the incident slit connecting plate 8 and the exit slit connecting plate 6, a connecting hole 12 is provided between the two ends of the movable hole 11 and the fixed platform 2, a fixing box 4 is provided on both sides of the fixed platform 2, and a shading belt 10 is provided between the interior of the fixing box 4 at different positions and the incident slit connecting plate 8 and the exit slit connecting plate 6 respectively, an elastic belt 15 is provided between one end of the shading belt 10 and the fixing box 4, an incident light source 9 is provided on the incident slit connecting plate 8, and a shielding member 7 is provided on the exit slit connecting plate 6.
[0022] As a further improvement, a plurality of anti-skid legs are installed at the bottom of the experimental case 1, the movable case cover 3 is located at the top of the experimental case 1 and is movably connected thereto, and the connecting piece between the movable case cover 3 and the experimental case 1 is located inside the experimental case 1.
[0023] In a further improvement, the top of the fixed platform 2 is an embedded structure, the incident spherical reflector 17 is an arc-shaped structure, the grating 5 is located near the incident slit plate 8, the grating combination number of the grating is n, wherein n≥1, the azimuth angle of the grating is scanned and controlled by a mechanical transmission device, the height of the incident slit plate 8 is higher than the exit slit plate 6, and the adjustable widths of the incident slit plate 8 and the exit slit plate 6 are both 0.01-1.0 mm.
[0024] As a further improvement, the connecting block 16 is located on the connecting rod 18 and is slidably connected therebetween, there is damping between the connecting block 16 and the connecting rod 18, and two fastening studs are installed on both the incident slit connecting plate 8 and the exit slit connecting plate 6 and the ends thereof are in contact with the connecting rod 18.
[0025] Further improved, the shading belt 10 is located in the movable hole 11, and a hardened layer is provided on the top and bottom of the shading belt 10. The fixed box 4 is provided with a guide pulley 13 at a position close to the connecting hole 12. The outer ring of the guide pulley 13 is in contact with the shading belt 10, and the end of the elastic belt 15 is fixedly connected to the fixed box 4.
[0026] Further improvement, such as Figure 6As shown: the light source passes through the incident slit S1 and the grating G to form an incident light path L1, which is reflected by the incident spherical reflector M1 to form a collimated light path L2, wherein the incident light path L1 and the collimated light path L2 are coaxial in the projection line on the diffraction surface, and the incident off-axis angle is zero; the collimated light path L2 is diffracted by the grating G to form a diffraction light path L3, and the diffraction light path L3 is reflected by the diffraction focusing spherical mirror reflector M2 to form a diffraction coaxial light path L4, wherein the diffraction light path L3 and the diffraction coaxial light path L4 are coaxial in the projection line on the diffraction surface, and the diffraction off-axis angle is zero.
[0027] When in use: the incident light source 9 and the shielding member 7 of the utility model are respectively connected to the incident slit connecting plate 8 and the exit slit connecting plate 6, and then the experiment is carried out. During the experiment, the movable box cover 3 is closed. When the position needs to be adjusted, the fastening studs are loosened to move the incident slit connecting plate 8 and the exit slit connecting plate 6, thereby changing the light beam angle to facilitate more accurate experimental data. At the same time, during the movement of the incident slit connecting plate 8 and the exit slit connecting plate 6, the shading belt 10 will move synchronously to avoid affecting the effect of the experiment.
[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. An experimental device for a grating spectrometer, characterized in that: The invention comprises an experimental case (1) and a movable case cover (3), wherein a fixed platform (2) is arranged inside the experimental case (1), two incident spherical reflectors (17) are arranged at one end of the fixed platform (2), a grating (5) is arranged at the other end of the fixed platform (2), two movable holes (11) are arranged at one end of the fixed platform (2), incident slit connecting plates (8) and exit slit connecting plates (6) are arranged on the movable holes (11) at different positions, respectively, the fixed platform (2) is provided with connecting grooves (14) at the top and bottom of the movable holes (11), a connecting rod (18) is arranged on the connecting grooves (14), the incident slits (11) and the exit slit connecting plates (6) are arranged on the other end of the fixed platform (2), and the incident slits (11) and the exit slit connecting plates (6) are arranged on the other end of the fixed platform (2). A connecting block (16) is provided on one side of the connecting plate (8) and the exit slit connecting plate (6); connecting holes (12) are provided between the two ends of the movable hole (11) and the fixing platform (2); fixing boxes (4) are provided on both sides of the fixing platform (2); light shielding strips (10) are provided inside the fixing boxes (4) at different positions and between the incident slit connecting plate (8) and the exit slit connecting plate (6); an elastic strip (15) is provided between one end of the light shielding strip (10) and the fixing box (4); an incident light source (9) is provided on the incident slit connecting plate (8); and a shielding member (7) is provided on the exit slit connecting plate (6).
2. The experimental device of a grating spectrometer according to claim 1, characterized in that: A plurality of anti-slip legs are installed at the bottom of the experimental case (1); the movable case cover (3) is located at the top of the experimental case (1) and is movably connected thereto; and a connecting piece between the movable case cover (3) and the experimental case (1) is located inside the experimental case (1).
3. The experimental device of a grating spectrometer according to claim 1, characterized in that: The top of the fixing platform (2) is an embedded structure, the incident spherical reflector (17) is an arc-shaped structure, the grating (5) is located close to the incident slit connecting plate (8), the height of the incident slit connecting plate (8) is higher than the exit slit connecting plate (6), and the adjustable width of the incident slit connecting plate (8) and the adjustable width of the exit slit connecting plate (6) are both 0.01-1.0 mm.
4. The experimental device of a grating spectrometer according to claim 1, characterized in that: The connection block (16) is located on the connection rod (18) and is slidably connected thereto; damping is provided between the connection block (16) and the connection rod (18); and two fastening studs are installed on both the incident slit connection plate (8) and the exit slit connection plate (6) and the ends of the fastening studs are in contact with the connection rod (18).
5. The experimental device of a grating spectrometer according to claim 1, characterized in that: The shading belt (10) is located in the movable hole (11), and a hardened layer is provided on the top and bottom of the shading belt (10). The fixed box (4) is provided with a guide pulley (13) at a position close to the connecting hole (12), and the outer ring of the guide pulley (13) is in contact with the shading belt (10). The end of the elastic belt (15) is fixedly connected to the fixed box (4).