Open type grating spectrometer teaching practical training device

Abstract

The utility model provides an open grating spectrometer teaching practical training device comprising a sine arm mechanism, the sine arm mechanism is rotatably connected to a pedestal, the pedestal is provided with a linear driving mechanism, an execution end of the linear driving mechanism can drive one end of the sine arm mechanism to swing, and the other end of the sine arm mechanism is provided with a reflection grating. An upper cover is detachably installed on the base, and the sine arm mechanism, the linear driving mechanism and the reflection grating are located in the upper cover. According to the open type grating spectrometer teaching practical training device, the upper cover is detachably installed on the base, or a window is arranged on the upper cover, a black box of a conventional teaching instrument is opened, the open type grating spectrometer teaching practical training device is provided, and students can adjust and operate all key components manually.

Description

Technical Field

[0001] The utility model belongs to the field of grating spectrometers, and particularly relates to an open teaching and training device for grating spectrometers. Background Technique

[0002] For the current teaching instruments and equipment of grating spectrometers, the monochromator part is a sealed device, and students cannot see the internal structure. They can only understand its principle structure through written descriptions, with limited and unintuitive effects. Moreover, they cannot deeply understand the functions and design requirements of each component by adjusting each component manually, resulting in poor teaching effects and a single teaching form. Summary of the Invention

[0003] In view of this, the utility model aims to provide an open teaching and training device for grating spectrometers to solve the problem of limited and unintuitive effects of the existing teaching instruments and equipment for grating spectrometers.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] An open teaching and training device for grating spectrometers includes a sine arm mechanism. The sine arm mechanism is rotationally connected to the base, and a linear drive mechanism is arranged on the base. The execution end of the linear drive mechanism can drive one end of the sine arm mechanism to swing. A reflection grating is arranged at the other end of the sine arm mechanism. An upper cover is detachably installed on the base, and the sine arm mechanism, the linear drive mechanism, and the reflection grating are located inside the upper cover.

[0006] Further, the sine arm mechanism includes a rotating shaft. One end of the rotating shaft is installed on the base, and the rotating other end is rotatably sleeved with a rotating arm. A first tension spring is arranged at one end of the rotating arm, and one end of the first tension spring is fixedly connected to the base. The reflection grating is detachably installed on the upper side of the rotating arm.

[0007] Further, a plurality of mounting holes are axially arranged on the rotating arm, and the execution end of the linear drive mechanism drives one end of a connecting rod to swing, and the other end of the connecting rod is detachably installed in one of the mounting holes.

[0008] Further, the linear drive mechanism includes a lead screw. One end of the lead screw is fixedly installed with a driver. The periphery of the lead screw is rotatably sleeved on the base. The periphery of the lead screw is threadedly connected to a slide table, and the slide table is slidably connected to the base. A baffle is arranged on the slide table. One end of the connecting rod is rotatably sleeved with a roller, and the periphery of the roller is rollingly connected to one side of the baffle.

[0009] Further, the open grating spectrometer teaching and training device further includes an objective lens and a converging mirror, and the objective lens and the converging mirror are respectively installed on the base through an adjusting seat. The adjusting seat is used to adjust the relative positions of the objective lens, the converging mirror and the base. An entrance slit part and an exit slit part are provided on the base, and the objective lens and the converging mirror are located inside the upper cover, while the entrance slit part and the exit slit part are located outside the upper cover.

[0010] Further, the adjusting seat includes a bottom plate which is detachably installed on the base. An adjusting plate is provided on one side of the bottom plate. An installation hole is provided in the middle of the adjusting plate, and the objective lens or the converging mirror is installed in the installation hole. A plurality of slot holes are provided on the bottom plate, and a second tension spring is installed in each slot hole. One end of each second tension spring is fixedly connected to the adjusting plate. Two threaded holes are provided on the bottom plate, and an adjusting bolt is installed in each threaded hole. One end of each adjusting bolt can abut against one side of the adjusting plate.

[0011] Further, the cross-section of the bottom plate is of an L-shaped structure. An adjusting bolt is provided at each of the two ends of the L-shaped structure, and a blind slot is provided in the middle of the L-shaped structure. A ball is provided in the blind slot, and the periphery of the ball abuts against one side of the adjusting plate.

[0012] Compared with the prior art, the open grating spectrometer teaching and training device of the present invention has the following beneficial effects:

[0013] (1) For the open grating spectrometer teaching and training device of the present invention, the upper cover is detachably installed on the base, or a window is opened on the upper cover, realizing the opening of the "black box" of conventional teaching instruments, providing an open grating spectrometer teaching and training device, and allowing students to manually adjust and operate each key component.

[0014] (2) For the open grating spectrometer teaching and training device of the present invention, the reflective grating has a replaceable structure, so as to be able to adapt to reflective gratings of different specifications and realize understanding the influence of different gratings on resolution and wavelength range. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0016] Figure 1 is a schematic structural diagram of an open grating spectrometer teaching and training device according to an embodiment of the present invention;

[0017] Figure 2 is a schematic structural diagram of an open grating spectrometer teaching and training device according to an embodiment of the present invention with the upper cover removed;

[0018] Figure 3 Schematic structural diagram of the assembly of the linear drive mechanism and the sine arm mechanism according to the embodiment of the present utility model;

[0019] Figure 4 Side view schematic diagram of the assembly of the converging mirror and the adjustment base according to the embodiment of the present utility model;

[0020] Figure 5 Schematic structural diagram of the assembly of the converging mirror and the adjustment base according to the embodiment of the present utility model.

[0021] Explanation of reference numerals:

[0022] 1 - Entrance slit part; 2 - Reflection grating; 3 - Objective lens; 4 - Converging mirror; 5 - Linear drive mechanism; 51 - Lead screw; 52 - Driver; 53 - Slide; 54 - Baffle; 6 - Sine arm mechanism; 61 - Rotating shaft; 62 - Rotating arm; 63 - First tension spring; 64 - Mounting hole; 65 - Connecting rod; 66 - Roller; 7 - Exit slit part; 8 - Upper cover; 9 - Base; 10 - Adjustment base; 101 - Bottom plate; 102 - Adjustment plate; 103 - Adjusting bolt; 104 - Second tension spring. Detailed implementation manners

[0023] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0027] As Figures 1-5 shown, an open grating spectrometer teaching and training device includes a sine arm mechanism 6. The sine arm mechanism 6 is rotatably connected to the base 9, and a linear drive mechanism 5 is provided on the base 9. The execution end of the linear drive mechanism 5 can drive one end of the sine arm mechanism 6 to swing. A reflection grating 2 is provided at the other end of the sine arm mechanism 6. The upper cover 8 is detachably installed on the base 9, and the sine arm mechanism 6, the linear drive mechanism 5, and the reflection grating 2 are located inside the upper cover 8. The upper cover 8 is detachably installed on the base 9, or a viewing window is opened on the upper cover 8, realizing the opening of the "black box" of conventional teaching instruments, providing an open grating spectrometer teaching and training device, and allowing students to manually adjust and operate each key component.

[0028] The sine arm mechanism 6 includes a rotating shaft 61. One end of the rotating shaft 61 is installed on the base 9, and the rotating other end is rotatably sleeved with a rotating arm 62. A first tension spring 63 is provided at one end of the rotating arm 62. One end of the first tension spring 63 is fixedly connected to the base 9. The reflection grating 2 is detachably installed on the upper side of the rotating arm 62. The reflection grating 2 has a replaceable structure so as to be able to adapt to different specifications of the reflection grating 2 and realize the understanding of the influence of different gratings on the resolution and wavelength range.

[0029] A plurality of mounting holes 64 are axially provided on the rotating arm 62, and the execution end of the linear drive mechanism 5 drives one end of a connecting rod 65 to swing. The other end of the connecting rod 65 is detachably installed in one of the mounting holes 64. By connecting to the mounting holes 64 at different positions, the installation length of the rotating arm 62 and the connecting rod 65 can be adjusted, and the influence of different arm lengths on the wavelength range and wavelength step can be observed.

[0030] The linear drive mechanism 5 includes a lead screw 51. One end of the lead screw 51 is fixedly installed with a driver 52. The periphery of the lead screw 51 is rotatably sleeved on the base 9. The periphery of the lead screw 51 is threadedly connected to a slide table 53, and the slide table 53 is slidably connected to the base 9. A baffle 54 is provided on the slide table 53. One end of a connecting rod 65 is rotatably sleeved with a roller 66, and the periphery of the roller 66 is rollingly connected to one side of the baffle 54. The driver 52 in this embodiment is a handwheel. When the handwheel is rotated, it can drive the lead screw 51 to rotate synchronously, so as to realize the linear movement of the slide table 53 and the baffle 54. The roller 66 provided at one end of the connecting rod 65 is elastically affected by a first tension spring 63 and always fits to one side of the baffle 54. As the baffle 54 moves, the connecting rod 65 and the rotating arm 62 swing, thereby driving the reflection grating 2 to deflect.

[0031] An open grating spectrometer teaching and training device further includes an objective lens 3 and a converging reflector 4. The visible region reflectivity of the converging reflector 4 is > 90%. The objective lens 3 and the converging reflector 4 are respectively installed on the base 9 through an adjusting seat 10. The adjusting seat 10 is used to adjust the relative positions of the objective lens 3, the converging reflector 4 and the base 9. An entrance slit portion 1 and an exit slit portion 7 are provided on the base 9. The objective lens 3 and the converging reflector 4 are located inside the upper cover 8, and the entrance slit portion 1 and the exit slit portion 7 are located outside the upper cover 8.

[0032] The adjusting seat 10 includes a bottom plate 101. The bottom plate 101 is detachably installed on the base 9. An adjusting plate 102 is provided on one side of the bottom plate 101. An installation hole 64 is provided in the middle of the adjusting plate 102. The objective lens 3 or the converging reflector 4 is installed in the installation hole 64. A plurality of slot holes are provided on the bottom plate 101, and a second tension spring 104 is installed in each slot hole. One end of each second tension spring 104 is fixedly connected to the adjusting plate 102. Two threaded holes are provided on the bottom plate 101, and an adjusting bolt 103 is installed in each threaded hole. One end of each adjusting bolt 103 can abut against one side of the adjusting plate 102. The plurality of second tension springs 104 provided are used to stabilize the relative positions of the bottom plate 101 and the adjusting plate 102. As Figure 5 shown, the cross-section of the bottom plate 101 is an L-shaped structure. One adjusting bolt 103 is provided at each end of the L-shaped structure. A blind slot is provided in the middle of the L-shaped structure, and a ball is provided in the blind slot. The periphery of the ball abuts against one side of the adjusting plate 102. The relative positions of the bottom plate 101 and the adjusting plate 102 can be stably supported by the ball and the two adjusting bolts 103. By respectively adjusting each adjusting bolt 103, the pitching angles of the objective lens 3 and the converging reflector 4 can be realized, and students can deeply understand the influence of focal length, etc. on spectral imaging and resolution.

[0033] During implementation, the objective lens 3 is positioned directly opposite the entrance slit portion 1. The focal position of its spherical mirror is the position of the entrance slit portion 1, which converts the incident light of the entrance slit portion 1 into approximately parallel light and irradiates it onto the reflection grating 2. The converging mirror 4 converges the diffracted light of the reflection grating 2, and its focal position is the exit slit portion 7. The linear drive portion drives the sine arm mechanism 6 to rotate through its slide table 53, and the sine arm mechanism 6 is fixed together with the reflection grating 2. By rotating the linear drive portion, the reflection grating 2 can be rotated by different angles, so that light of different wavelengths is reflected by the converging mirror 4 and exits through the exit slit portion 7. The upper cover 8 is detachable, can be pulled up and removed during observation adjustment, and can be placed on the instrument for light shielding during measurement.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An open grating spectrometer teaching and training device, characterized in that: It includes a sine arm mechanism (6). The sine arm mechanism (6) is rotatably connected to the base (9), and a linear drive mechanism (5) is provided on the base (9). The execution end of the linear drive mechanism (5) can drive one end of the sine arm mechanism (6) to swing. A reflection grating (2) is provided at the other end of the sine arm mechanism (6). The upper cover (8) is detachably installed on the base (9), and the sine arm mechanism (6), the linear drive mechanism (5) and the reflection grating (2) are located inside the upper cover (8).

2. An open grating spectrometer teaching and training device according to claim 1, characterized in that: The sine arm mechanism (6) includes a rotating shaft (61). One end of the rotating shaft (61) is installed on the base (9), and the rotating other end is rotatably sleeved with a rotating arm (62). A first tension spring (63) is provided at one end of the rotating arm (62), and one end of the first tension spring (63) is fixedly connected to the base (9). The reflection grating (2) is detachably installed on the upper side of the rotating arm (62).

3. An open grating spectrometer teaching and training device according to claim 2, characterized in that: A plurality of mounting holes (64) are axially provided on the rotating arm (62), and the execution end of the linear drive mechanism (5) drives one end of the connecting rod (65) to swing. The other end of the connecting rod (65) is detachably installed in one of the mounting holes (64).

4. An open grating spectrometer teaching and training device according to claim 3, characterized in that: The linear drive mechanism (5) includes a lead screw (51). One end of the lead screw (51) is fixedly installed with a driver (52). The periphery of the lead screw (51) is rotatably sleeved on the base (9). The periphery of the lead screw (51) is threadedly connected to a slide table (53), and the slide table (53) is slidably connected to the base (9). A baffle (54) is provided on the slide table (53). One end of the connecting rod (65) is rotatably sleeved with a roller (66), and the periphery of the roller (66) is rollingly connected to one side of the baffle (54).

5. An open grating spectrometer teaching and training device according to claim 1, characterized in that: It further includes an objective lens (3) and a converging reflector (4). The objective lens (3) and the converging reflector (4) are respectively installed on the base (9) through an adjusting seat (10). The adjusting seat (10) is used to adjust the relative positions of the objective lens (3), the converging reflector (4) and the base (9). An entrance slit portion (1) and an exit slit portion (7) are provided on the base (9). The objective lens (3) and the converging reflector (4) are located inside the upper cover (8), and the entrance slit portion (1) and the exit slit portion (7) are located outside the upper cover (8).

6. An open grating spectrometer teaching and training device according to claim 5, characterized in that: The adjusting seat (10) includes a bottom plate (101). The bottom plate (101) is detachably installed on the base (9). An adjusting plate (102) is provided on one side of the bottom plate (101). A mounting hole (64) is provided in the middle of the adjusting plate (102). The objective lens (3) or the converging reflector (4) is installed in the mounting hole (64). A plurality of slot holes are provided on the bottom plate (101), and a second tension spring (104) is installed in each slot hole. One end of each second tension spring (104) is fixedly connected to the adjusting plate (102). Two threaded holes are provided on the bottom plate (101), and an adjusting bolt (103) is installed in each threaded hole. One end of each adjusting bolt (103) can abut against one side of the adjusting plate (102).

7. An open grating spectrometer teaching and training device according to claim 6, characterized in that: The cross-section of the bottom plate (101) is an L-shaped structure. An adjusting bolt (103) is provided at each end of the L-shaped structure. A blind slot is provided in the middle of the L-shaped structure, and a ball is provided in the blind slot. The periphery of the ball abuts against one side of the adjusting plate (102).

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