Device for measuring sodium light wavelength by adopting biprism interference

Abstract

The utility model discloses a device for measuring sodium light wavelength by adopting biprism interference, which relates to the technical field of optical experiment technology, and comprises an optical bench, a convergent lens is arranged on the optical bench, a carriage is arranged at the bottom of the convergent lens, a moving mechanism is arranged on the optical bench, the moving mechanism is used for controlling the carriage to move, and the convergent lens is arranged on the moving mechanism. According to the utility model, the moving mechanism is arranged, the convergent lens can be controlled to move through the arranged moving mechanism, and a stepping motor is adopted as a driving motor, so that the moving distance is more accurate; and meanwhile, the steering engine is mounted on the single-slit zero setting screw of the slit bracket, and the single slit is adjusted through the steering engine, so that the accuracy of later experimental data measurement is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical experiment technical field especially relates to a device of sodium light wavelength is measured with double prism interference. BACKGROUND

[0002] In the optical experiment field, double prism interference sodium light wavelength measurement is a classic experiment operation, and the traditional double prism interference sodium light wavelength measurement device mainly relies on manual operation mode when adjusting the position of the converging lens.

[0003] Manual moving converging lens has many drawbacks, first, it is difficult to achieve high accuracy in position determination, even if the experienced operator, manual lens movement will produce slight deviation due to human factors in the experimental process, which may affect the accuracy of the final measurement of sodium light wavelength, second, the convenience of manual operation is poor, and the operator needs to repeatedly manually adjust the position of the converging lens on the optical bench, which not only consumes time and effort, but also requires the operator to maintain a high degree of concentration and patience, therefore, in order to improve the accuracy of the converging lens position adjustment, the device designs a device of sodium light wavelength is measured with double prism interference. SUMMARY

[0004] The utility model discloses a device of sodium light wavelength is measured with double prism interference, which can solve the problems in the prior art.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A device of sodium light wavelength is measured with double prism interference, which comprises an optical bench, a converging lens is installed on the optical bench, a sliding frame is installed at the bottom of the converging lens, a moving mechanism is arranged on the optical bench, and the moving mechanism is used to control the movement of the sliding frame.

[0007] The above technical scheme further comprises: the moving mechanism comprises a mounting frame, the mounting frame is installed on the optical bench through a mounting mechanism, first and second fixed plates are fixedly installed on the outer wall of the mounting frame, a stepper motor is also fixedly installed on the mounting frame, the output shaft of the stepper motor is movably penetrated through the first fixed plate, a lead screw is fixedly installed on the output shaft end wall of the stepper motor, the end of the lead screw away from the stepper motor is rotatably connected to the outer wall of the second fixed plate, a threaded sliding block is threadedly connected to the lead screw, the sliding frame is detachably installed on the threaded sliding block, and a limiting assembly for limiting the movement direction of the threaded sliding block is arranged between the first and second fixed plates.

[0008] An installation hole is formed in the outer wall of the threaded sliding block, a bolt is installed on the sliding frame, and the bolt is threadedly installed in the interior of the installation hole.

[0009] The limiting assembly comprises a limiting rod fixedly installed on the outer wall of the first fixed plate, and the threaded sliding block is slidably connected to the limiting rod, and the end of the limiting rod away from the first fixed plate is fixedly connected to the outer wall of the second fixed plate.

[0010] The mounting mechanism is provided with four groups, and the four groups of mounting mechanisms are arranged on the first fixed plate and the second fixed plate respectively.

[0011] One of the mounting mechanisms comprises a mounting slot formed in the outer wall of the first fixed plate, the inner wall of the mounting slot is slidably connected with a moving block, the outer wall of the moving block is fixedly installed with a push handle, the push handle extends above the top wall of the first fixed plate, the end wall of the moving block is fixedly installed with a plug rod, the side wall of the second fixed plate is provided with a through hole, the plug rod is movably inserted through the through hole and extends to the outside of the second fixed plate, and the inner wall of the optical bench is provided with a plug hole, and the plug rod is movably inserted into the plug hole.

[0012] The inner wall of the mounting slot is fixedly installed with a spring, and the end of the spring away from the inner wall of the mounting slot is fixedly connected to the outer wall of the moving block.

[0013] Compared with the prior art, the beneficial effects of the present application are:

[0014] 1、The utility model discloses a moving mechanism is set up, and the moving mechanism can control the position of converging lens to move, and the driving motor adopts the step motor, and the moving distance is more accurate, and the accuracy of the experimental data measurement of later stage is improved.

[0015] 2、The utility model discloses an installation mechanism is set up, and the installation mechanism can realize the disassembly of moving mechanism conveniently, and the maintenance of later stage is convenient. DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the device for measuring the wavelength of sodium light by adopting double-prism interference of the utility model;

[0017] Figure 2 It is the structure schematic diagram of the moving mechanism;

[0018] Figure 3 It is the partial sectional structure schematic diagram of the utility model;

[0019] Figure 4 It is Figure 3 The enlarged structure schematic diagram of A in the middle;

[0020] In the drawing:

[0021] 10, optical bench; 11, sodium light; 12, slit support; 13, double prism; 14, converging lens; 141, sliding frame; 15, micrometer eyepiece; 16, white screen;

[0022] 20, mounting frame; 201, first fixed plate; 202, second fixed plate; 21, stepping motor; 22, lead screw; 23, threaded sliding block; 24, mounting hole; 25, limiting rod;

[0023] 31, mounting groove; 32, push handle; 33, insertion rod; 34, moving block; 35, spring; 36, insertion hole; 37, through hole. DETAILED DESCRIPTION

[0024] The technical scheme of the utility model will be further explained in connection with the drawings and specific embodiments.

[0025] Embodiment one

[0026] Referring to the drawings Figures 1-4 , including optical bench 10, converging lens 14 is installed on optical bench 10, and sodium light 11 is further arranged outside optical bench 10, and slit support 12, double prism 13, micrometer eyepiece 15 and white screen 16 are further installed on optical bench 10, wherein the above components still adopt the prior art, and in the present scheme, the improvement point mainly lies in that the moving mode of converging lens 14 is designed as an electric adjustment mode, and the accuracy of the position of movement is improved.

[0027] The bottom of converging lens 14 is provided with sliding frame 141, and a moving mechanism is arranged on optical bench 10, and the moving mechanism is used for controlling the movement of sliding frame 141; wherein the sliding frame 141 is in the shape of a Chinese character "fang" with the opening facing downwards.

[0028] The moving mechanism comprises mounting frame 20, the mounting frame 20 is installed on optical bench 10 through a mounting mechanism, the first fixed plate 201 and the second fixed plate 202 are fixedly installed on the outer wall of the mounting frame 20, the stepping motor 21 is further fixedly installed on the mounting frame 20, the output shaft of the stepping motor 21 is movably penetrated through the first fixed plate 201, the output shaft end wall of the stepping motor 21 is fixedly provided with lead screw 22, the end of the lead screw 22 away from the stepping motor 21 is rotatably connected to the outer wall of the second fixed plate 202, and the threaded sliding block 23 is threadedly connected to the lead screw 22; wherein when the movement of converging lens 14 is controlled, the stepping motor 21 can be started, the stepping motor 21 drives the lead screw 22 to rotate, the threads on the outer wall of the lead screw 22 are engaged with the threads on the inner wall of the threaded sliding block 23, so that the threaded sliding block 23 is driven to move, and the threaded sliding block 23 drives the sliding frame 141 to move after moving, so that the converging lens 14 is driven to move through the sliding frame 141.

[0029] The outer wall of the threaded sliding block 23 is provided with a mounting hole 24, and a bolt is mounted on the sliding bracket 141 and is threadedly mounted in the mounting hole 24; wherein the sliding bracket 141 can be disassembled, when disassembled, the bolt on the sliding bracket 141 is rotated and removed from the mounting hole 24, so that the fixing of the sliding bracket 141 is released, and the sliding bracket 141 can be disassembled from the threaded sliding block 23.

[0030] The first fixed plate 201 and the second fixed plate 202 are provided with a limiting assembly for limiting the moving direction of the threaded sliding block 23, the limiting assembly comprises a limiting rod 25 fixedly installed on the outer wall of the first fixed plate 201, the threaded sliding block 23 is slidingly connected to the limiting rod 25, and the end, away from the first fixed plate 201, of the limiting rod 25 is fixedly connected to the outer wall of the second fixed plate 202; wherein in order to improve the stability of the movement of the threaded sliding block 23, the limiting assembly is arranged, that is, when the threaded sliding block 23 moves, the threaded sliding block 23 slides on the limiting rod 25, so that the moving direction of the threaded sliding block 23 is limited by the limiting rod 25, avoiding the self-rotation movement of the threaded sliding block 23 caused by the rotation of the lead screw 22, so that the threaded sliding block 23 can only move in the horizontal direction.

[0031] The mounting mechanism is provided with four groups, and the four groups of mounting mechanisms are arranged on the first fixed plate 201 and the second fixed plate 202; wherein two groups of mounting mechanisms are arranged on the first fixed plate 201 and the second fixed plate 202.

[0032] One of the mounting mechanisms comprises a mounting slot 31 formed in the outer wall of the first fixed plate 201, the inner wall of the mounting slot 31 is slidingly connected with a moving block 34, the outer wall of the moving block 34 is fixedly installed with a push handle 32, the push handle 32 extends above the top wall of the first fixed plate 201, the end wall of the moving block 34 is fixedly installed with a plug rod 33, a through hole 37 is formed in the side wall of the second fixed plate 202, the plug rod 33 movably penetrates through the inside of the through hole 37 and extends to the outside of the second fixed plate 202, and a plug hole 36 is formed in the inner wall of the optical bench 10, the plug rod 33 movably plugs into the inside of the plug hole 36; wherein when the mounting bracket 20 is disassembled from the optical bench 10, the push handle 32 can be pushed to move away from the plug hole 36, the push handle 32 drives the moving block 34 to move, the moving block 34 drives the plug rod 33 to move, so that the plug rod 33 is removed from the plug hole 36, the fixing of the first fixed plate 201 / second fixed plate 202 by the plug rod 33 is released, and then the mounting bracket 20 can be removed from the optical bench 10.

[0033] The inner wall of the mounting groove 31 is fixedly provided with a spring 35, one end of the spring 35 away from the inner wall of the mounting groove 31 is fixedly connected to the outer wall of the moving block 34; wherein, in order to improve the stability of the insertion rod 33 inserted into the insertion hole 36, the spring 35 is arranged here, the elastic potential of the spring 35 can improve the stability of the insertion rod 33 pressed in the insertion hole 36, thereby improving the stability of the mounting frame 20 mounted on the optical bench 10.

[0034] In this embodiment, the working principle of the device is that when the position of the converging lens 14 needs to be adjusted, the stepper motor 21 can be started, the stepper motor 21 drives the lead screw 22 to rotate, the lead screw 22 drives the threaded sliding block 23 to move, so that the threaded sliding block 23 drives the sliding frame 141 and the converging lens 14 to move, thereby realizing the adjustment of the position of the converging lens 14.

[0035] In the utility model, the converging lens 14 is controlled to move by the moving mechanism, the driving motor is the stepper motor, the moving distance is more accurate, and the accuracy of the experimental data measurement in the later period is improved.

[0036] The above is only the preferred specific implementation mode of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, equivalent replacement or change are covered in the protection scope of the utility model.

Claims

1. A device for measuring the wavelength of sodium light using double-prism interferometry, comprising an optical bench (10) on which a converging lens (14) is mounted, characterized in that, The bottom of the converging lens (14) is equipped with a slide (141), and the optical bench (10) is provided with a moving mechanism, which is used to control the movement of the slide (141).

2. The device for measuring the wavelength of sodium light using double-prism interferometry according to claim 1, characterized in that, The moving mechanism includes a mounting frame (20), which is mounted on the optical bench (10) via a mounting mechanism. A first fixing plate (201) and a second fixing plate (202) are fixedly mounted on the outer wall of the mounting frame (20). A stepper motor (21) is also fixedly mounted on the mounting frame (20). The output shaft of the stepper motor (21) movably passes through the first fixing plate (201). A lead screw (22) is fixedly mounted on the end wall of the output shaft of the stepper motor (21). One end of the lead screw (22) away from the stepper motor (21) is rotatably connected to the outer wall of the second fixing plate (202). A threaded slider (23) is threadedly connected to the lead screw (22). A slide (141) is detachably mounted on the threaded slider (23). A limiting component for restricting the movement direction of the threaded slider (23) is provided between the first fixing plate (201) and the second fixing plate (202).

3. The device for measuring the wavelength of sodium light using double-prism interference according to claim 2, characterized in that, The outer wall of the threaded slider (23) is provided with a mounting hole (24), and a bolt is installed on the slide (141), the bolt being threaded into the inside of the mounting hole (24).

4. The device for measuring the wavelength of sodium light using double-prism interferometry according to claim 3, characterized in that, The limiting component includes a limiting rod (25) fixedly installed on the outer wall of the first fixing plate (201), a threaded slider (23) slidably connected to the limiting rod (25), and one end of the limiting rod (25) away from the first fixing plate (201) fixedly connected to the outer wall of the second fixing plate (202).

5. The device for measuring the wavelength of sodium light using double-prism interference according to claim 4, characterized in that, The installation mechanism is provided in four sets, which are respectively set on the first fixing plate (201) and the second fixing plate (202).

6. The device for measuring the wavelength of sodium light using double-prism interference according to claim 5, characterized in that, One set of the installation mechanisms includes an installation groove (31) on the outer wall of the first fixing plate (201), a movable block (34) is slidably connected to the inner wall of the installation groove (31), a push handle (32) is fixedly installed on the outer wall of the movable block (34), the push handle (32) extends to the top wall of the first fixing plate (201), a plug rod (33) is fixedly installed on the end wall of the movable block (34), a through hole (37) is opened on the side wall of the second fixing plate (202), the plug rod (33) moves through the inside of the through hole (37) and extends to the outside of the second fixing plate (202), and an insertion hole (36) is opened on the inner wall of the optical bench (10), the plug rod (33) is movably inserted into the inside of the insertion hole (36).

7. The device for measuring the wavelength of sodium light using double-prism interference according to claim 6, characterized in that, A spring (35) is fixedly installed on the inner wall of the mounting groove (31), and one end of the spring (35) away from the inner wall of the mounting groove (31) is fixedly connected to the outer wall of the movable block (34).

Images