Rapid and accurate spectrometer adjustment auxiliary device
By designing a spectrometer adjustment auxiliary device including an outer barrel bracket, a laser and a three-sided mirror, the difficulty and 'false leveling problem of telescope and stage adjustment in spectrometer experiments was solved, and a fast and accurate level was achieved. Adjustment and high-precision experiments.
Patent Information
- Application Number
- CN202420977987.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-08
AI Technical Summary
In spectrometer experiments, it is difficult to adjust the level of the self-collimator telescope and the stage, and the existing technology increases the difficulty and cost of manufacturing. In addition, traditional double-sided mirrors have the problem of "false level", which affects the experimental accuracy.
A fast and accurate spectrometer adjustment auxiliary device including an outer barrel bracket, a laser, a reflector and a three-sided mirror is designed. The laser direction is adjusted through three-dimensional adjustable gaskets and screws. , avoid 'false level' and replace the double-sided mirror with a triple mirror to improve adjustment accuracy.
It significantly reduces the adjustment time of the spectrometer telescope, ensures the level accuracy of the stage, avoids the ‘false level’ state, and improves the experimental accuracy and simplicity of operation.
Smart Images
Figure CN222281431U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field, and in particular relates to a fast and accurate spectrometer adjustment auxiliary device. Background Art
[0002] The spectrometer experiment is one of the most difficult experiments in university physics experiments. Its main difficulty lies in the difficulty of adjusting the level of the self-collimating telescope and the stage. The reason is that when the spectrometer is roughly adjusted, the level of the telescope and the stage is adjusted by visual inspection, and it is estimated that the light emitted from the inside of the telescope can be reflected by the plane mirror and return to the image on the light screen inside the telescope (reflected "cross" image). Students with weak visual ability often cannot observe the reflected image on the light screen after visual rough adjustment due to insufficient aiming accuracy, which makes subsequent adjustments blind. Students often lose patience because they cannot adjust the stage for too long, which reduces their interest in learning and their enthusiasm for learning.
[0003] In order to solve the above problems, the existing technology mainly installs a laser aiming device outside the telescope barrel. The laser is emitted parallel to the optical axis of the telescope, and the reflected light is re-emitted into the laser emission hole for aiming, thereby reducing the difficulty of aiming.
[0004] Among them, the "A spectrometer leveling device" with application number 201320689512.4 adds a micro laser to the top of the telescope tube for aiming; the "A spectrometer telescope collimation auxiliary adjustment device with convenient disassembly and assembly" with application number 201921445037.X uses a "J"-shaped metal bracket to fix the semiconductor laser. Both require increasing the area of the plane mirror, increasing the difficulty of manufacturing the plane mirror, and increasing the cost, otherwise the laser will not be able to hit the plane mirror, and there will be no reflected light. The "Spectrometer Teaching Auxiliary Adjuster" with application number 202021730454.1 provides space for emitting and reflecting lasers by installing brackets above the telescope tube and above the reflector, which makes processing and precise installation more difficult.
[0005] In addition, in traditional spectrometer experiments, using a double-sided mirror as an auxiliary optical device for stage leveling has theoretical defects. Figure 3 As shown in the figure, when the stage rotates 180°, the front and back sides of the double-sided mirror can be perpendicular to the optical axis of the telescope, the stage may actually be in a non-horizontal state, which is called "false horizontal". Because at this time the stage and the double-sided mirror can tilt left and right, such as Figure 3 As shown in the figure, when the reflected light directions of the two sides of the double-sided mirror are the same, the bottom edge of the double-sided mirror should be on the X-axis, but this is not the case. To eliminate this situation, special operation steps need to be added, and it is easy to cause wrong operation. In actual teaching, the situation of lax adjustment of the stage level often occurs, which affects the experimental accuracy. There is currently no ideal solution to this defect. For this reason, a fast and accurate spectrometer adjustment auxiliary device is proposed. Utility Model Content
[0006] The purpose of the utility model is to provide a fast and accurate spectrometer adjustment auxiliary device to solve the problems existing in the background technology.
[0007] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:
[0008] A fast and accurate spectrometer adjustment auxiliary device comprises a telescope tube, an objective stage and a light screen, wherein an outer tube bracket is arranged on the outside of the telescope tube, a laser and a reflecting mirror are arranged on the upper side of the outer tube bracket, and the laser is arranged on the outer tube bracket near the telescope tube eyepiece, the reflecting mirror is arranged on the outer tube bracket near the telescope tube objective lens, the light screen is arranged on the side of the telescope tube away from the outer tube bracket, and a three-sided mirror is arranged on the upper end of the objective stage.
[0009] A three-dimensional adjustable gasket is arranged between the lens barrel outer bracket and the laser, the lower end of the three-dimensional adjustable gasket is connected with three screws which thread through the lens barrel outer bracket, and the laser is assembled on the upper end of the three-dimensional adjustable gasket.
[0010] Two calibration plates are arranged between the laser and the reflector, and both calibration plates are provided with calibration holes which are in the same plane as the optical axis of the telescope tube.
[0011] The reflecting mirror and the lens barrel outer bracket are hinged to each other.
[0012] Advantages and positive effects of the utility model:
[0013] 1. Using external laser as an indicator of the horizontal state of the telescope and stage has the advantages of traceable optical path and unrestricted field of view, which makes it easier for students to understand the optical path principle of the autocollimation telescope.
[0014] 2. With external laser as the indicator light, it becomes very easy to adjust the spectrometer telescope and the stage. After testing by some students who were learning spectrometer for the first time, it was found that the adjustment time of the traditional spectrometer telescope was close to 30 minutes on average, while with the auxiliary device of the utility model, the average adjustment time was within 10 minutes.
[0015] 3. The auxiliary device of the utility model is used to perform auxiliary adjustment of the spectrometer, which theoretically eliminates the "false level" state of stage adjustment (which can be mathematically proved) and has higher adjustment accuracy.
[0016] 4. When adjusting a conventional spectrometer, there are relatively strict requirements on the position of the double-sided mirror. When the auxiliary device of the utility model uses a three-sided mirror instead of a two-sided mirror for reflection, each reflective surface of the three-sided mirror can be roughly aligned with the corresponding screw on the stage, which will not affect the adjustment accuracy.
[0017] 5. When adjusting a conventional spectrometer, it is necessary to adjust the stage screws far away from the telescope, which is relatively difficult to operate and prone to misoperation. When using the auxiliary device of the utility model, each time the screws on the stage are adjusted, the screws that need to be adjusted are closest to the telescope and are in the same position, which is simple to operate and will not cause misoperation. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings.
[0019] Figure 1 This is a structural schematic diagram of a fast and accurate spectrometer adjustment auxiliary device of the utility model;
[0020] Figure 2 This is a schematic diagram of the top view of a fast and accurate spectrometer adjustment auxiliary device of the utility model;
[0021] Figure 3 Adjusting the stage for a "false level" situation in spectrometer experiments
[0022] The main component symbols are described as follows:
[0023] Telescope tube 100 , stage 101 , light screen 102 , tube outer bracket 200 , laser 201 , reflector 202 , three-sided mirror 203 , three-dimensional adjustable spacer 300 , screw 301 , calibration plate 302 , calibration hole 303 . DETAILED DESCRIPTION
[0024] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0025] Example:
[0026] like Figure 1-3 As shown, a fast and accurate spectrometer adjustment auxiliary device includes a telescope tube 100, a stage 101 and a light screen 102. A lens barrel outer bracket 200 is provided on the outside of the telescope tube 100. A laser 201 and a reflector 202 are provided on the upper side of the lens barrel outer bracket 200. The laser 201 is provided on the lens barrel outer bracket 200 close to the eyepiece of the telescope tube 100, the reflector 202 is provided on the lens barrel outer bracket 200 close to the objective lens of the telescope tube 100, the light screen 102 is provided on the side of the telescope tube 100 away from the lens barrel outer bracket 200, and a three-sided mirror 203 is provided on the upper end of the stage 101.
[0027] The telescope tube 100 and the stage 101 are both components of an existing spectrometer, and the lower ends of both are connected to the bracket of the spectrometer. The light screen 102 is used to receive the light emitted by the laser 201, and the light screen 102 is independently set and not connected to the spectrometer. The external bracket 200 has no fixed shape and is generally in the form of a sheet. The size and thickness are determined by the material used. It is used to carry the laser 201 and the reflector 202. The laser 201 is used to emit laser light, and the reflector 202 is used to reflect the laser light onto the three-sided mirror 203. The three-sided mirror 203 is placed on the stage 101. Its shape is a prism commonly used in spectrometer experiments. The angle between the three faces is 60°, but the three faces are all reflective surfaces, which are used to further reflect the laser light onto the light screen 102.
[0028] A three-dimensional adjustable gasket 300 is provided between the outer bracket 200 of the lens barrel and the laser 201. The lower end of the three-dimensional adjustable gasket 300 is connected to three screw rods 301 that thread through the outer bracket 200 of the lens barrel, and the lower end of the three-dimensional adjustable gasket 300 is ball-jointed with the upper end of the screw rod 301. The laser 201 is assembled on the upper end of the three-dimensional adjustable gasket 300. The screw rod 301 is set in the triangle of the three-dimensional adjustable gasket 300. The three-dimensional adjustable gasket 300 can be adjusted by rotating the screw rod 301, so that the direction of laser emission from the laser 201 can be adjusted to prevent the laser 201 from being misaligned.
[0029] Two calibration plates 302 are provided between the laser 201 and the reflector 202. Both calibration plates 302 are provided with calibration holes 303 in the same plane as the optical axis of the telescope tube 100. The calibration holes 303 are used to calibrate the laser to ensure that the laser direction is in the same direction as the optical axis of the telescope tube 100.
[0030] The reflector 202 and the lens barrel outer bracket 200 are hinged to each other, so that the angle of the reflector 202 can be adjusted, so as to adapt to different placement angles of the three-sided mirror 203.
[0031] Working principle: When using the device to adjust the level of the spectrometer telescope, place the three-sided mirror 203 on the stage 102 of the spectrometer. The three adjustment screws of the stage 102 are roughly aligned with the three reflecting surfaces of the three-sided mirror 203. When a certain reflecting surface is aligned with the telescope, adjust the screw corresponding to this surface and the tilt screw of the telescope to reflect the reflected laser to the position on the light screen 103 at the same height as the axis of the telescope. A scale line can be drawn on the light screen 103 for indication, which is exactly the same as the "binary division" adjustment of the conventional spectrometer experiment. Then rotate the stage 120° and perform the previous step again until the light reflected by the three reflecting surfaces is on the same line of the light screen. The stage is basically leveled.
[0032] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.
Claims
1. A fast and accurate spectrometer adjustment auxiliary device, comprising a telescope tube, a stage and a light screen, characterized in that: An outer bracket of the telescope barrel is provided on the outside of the telescope barrel, a laser and a reflecting mirror are provided on the upper side of the outer bracket of the telescope barrel, and the laser is provided on the outer bracket of the telescope barrel near the eyepiece of the telescope barrel, the reflecting mirror is provided on the outer bracket of the telescope barrel near the objective lens of the telescope barrel, the light screen is provided on the side of the telescope barrel away from the outer bracket of the telescope barrel, and a three-sided mirror is provided on the upper end of the stage.
2. A fast and accurate spectrometer adjustment auxiliary device according to claim 1, characterized in that: A three-dimensional adjustable gasket is arranged between the lens barrel outer bracket and the laser, the lower end of the three-dimensional adjustable gasket is connected with three screws which thread through the lens barrel outer bracket, and the laser is assembled on the upper end of the three-dimensional adjustable gasket.
3. A fast and accurate spectrometer adjustment auxiliary device according to claim 2, characterized in that: Two calibration plates are arranged between the laser and the reflector, and both calibration plates are provided with calibration holes which are in the same plane as the optical axis of the telescope tube.
4. A fast and accurate spectrometer adjustment auxiliary device according to claim 3, characterized in that: The reflecting mirror and the lens barrel outer bracket are hinged to each other.