Laser light source device for Michelson interferometer

Abstract

The utility model relates to the technical field of optical instruments, in particular to a laser light source device for a Michelson interferometer, which comprises a base and further comprises a vertical frame fixedly mounted on the base; the transverse frame is arranged on the vertical frame in a sliding manner; one end of the connecting rod is fixedly connected to the vertical frame, and the other end of the connecting rod is connected with a rotary adjusting component; the lens component is installed on the transverse frame, the rotary adjusting component is used for driving the lens component on the transverse frame to move, the lens component comprises a connecting frame and a collimating lens, the connecting frame is fixed to the end of the transverse frame, a second magnetic attraction ring and a limiting protruding rod are arranged on the connecting frame, and the collimating lens is arranged on the second magnetic attraction ring. The collimating mirror comprises a collimating mirror outer frame and a collimating mirror lens; a precise adjusting mechanism composed of a vertical frame, a transverse frame, a connecting rod, a rotary adjusting component and a lens component is ingeniously designed, so that the distance between a collimating lens and a laser emitting head can be flexibly adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of optical instruments, in particular to a laser light source device for a Michelson interferometer. Background Technique

[0002] In the fields of optical experiments and scientific research, the Michelson interferometer, as a precision optical measuring instrument, is widely used in the precise measurement of physical quantities such as length, refractive index, vibration, and displacement. The laser light source device, as the core component of the Michelson interferometer, directly affects the measurement accuracy and experimental effect of the interferometer. However, in practical applications, the traditional laser light source device for the Michelson interferometer has problems that it is difficult to flexibly adjust the focusing effect and transmission distance of the laser beam. Specifically, when conducting different types of optical experiments, it is often necessary to adjust the focusing degree and transmission distance of the laser beam according to the experimental requirements to obtain the best interference fringe quality and experimental results. The traditional laser light source device usually lacks a convenient and efficient adjustment mechanism, making it difficult for users to quickly and accurately adjust the laser beam parameters. The operation process is cumbersome and inefficient, which not only limits the flexibility of the experiment but also affects the accuracy and efficiency of the experiment to a certain extent. In view of the above problems, the existing technology urgently needs to be improved. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problem that it is difficult to flexibly adjust the focusing effect and transmission distance of the laser beam of the laser light source device, and to propose a laser light source device for a Michelson interferometer.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a laser light source device for a Michelson interferometer, including a base, and further including:

[0005] A vertical frame, fixedly installed on the base;

[0006] A horizontal frame, slidably arranged on the vertical frame;

[0007] A connecting rod, one end fixedly connected to the vertical frame, and the other end is provided with a rotational adjustment component for connection;

[0008] A lens component, installed on the horizontal frame. The rotational adjustment component is used to drive the lens component on the horizontal frame to move. The lens component includes a connecting frame and a collimating mirror. The connecting frame is fixed to the end of the horizontal frame. The connecting frame is provided with a second magnetic attraction ring and a limiting convex rod. The collimating mirror includes a collimating mirror outer frame and a collimating mirror lens. The collimating mirror outer frame is provided with a lug, a first magnetic attraction ring, and a through groove. The collimating mirror outer frame is magnetically connected and fixed to the connecting frame through the first magnetic attraction ring and the second magnetic attraction ring, and is snap-connected with the limiting convex rod through the through groove;

[0009] The laser light source device further includes a helium-neon laser and a laser output head. The output end of the helium-neon laser is connected to the laser output head through an optical fiber, and the laser output head is installed at the top of the vertical frame.

[0010] More specifically, the connecting frame is in a ring structure, and both the second magnetic attraction ring and the limiting convex rod are arranged on the annular side wall of the connecting frame.

[0011] More specifically, the collimator outer frame is also in a ring structure. The lug, the first magnetic attraction ring, and the through groove are all arranged on the annular side wall of the collimator outer frame, and the ring structure of the collimator outer frame is adapted to the ring structure of the connecting frame.

[0012] More specifically, there are two lugs. The two lugs protrude outward along the radial direction of the annular side wall of the collimator outer frame, and the two lugs are symmetrically arranged along the circumferential direction of the annular side wall.

[0013] More specifically, both the first magnetic attraction ring and the second magnetic attraction ring are annular magnets.

[0014] More specifically, the through groove is a strip-shaped groove that is recessed inward along the radial direction of the annular side wall of the collimator outer frame.

[0015] More specifically, the limiting convex rod is a cylindrical convex structure, and the diameter of the limiting convex rod is adapted to the width of the through groove.

[0016] Preferably, the rotation adjustment component includes a rotating handle and a transverse threaded rod. The rotating handle is fixedly connected to one end of the transverse threaded rod. The other end of the transverse threaded rod penetrates through the connecting rod and is rotatably connected to the side wall of the vertical frame. The surface of the transverse threaded rod is threadedly connected to the transverse frame. By rotating the rotating handle, the transverse threaded rod is driven to rotate so that the transverse frame slides horizontally on the vertical frame.

[0017] Preferably, an installation seat for placing the helium-neon laser is further arranged on the base.

[0018] Preferably, the vertical frame is fixedly installed on the base through fasteners.

[0019] Compared with the prior art, the utility model has the following beneficial effects: By ingeniously designing a precise adjustment mechanism composed of a vertical frame, a horizontal frame, a connecting rod, a rotation adjustment component, and a lens component, the distance between the collimating lens and the laser emitting head can be flexibly adjusted. Users can conveniently adjust this distance, thereby quickly and effectively optimizing the focusing effect and transmission distance of the laser beam to precisely match the requirements of different experimental scenarios, significantly improving the experimental accuracy. In addition, the utility model innovatively adopts a cooperative design of a magnetic attraction ring, a limiting convex rod, and a through groove on the lens component, making the replacement process of the collimating lens extremely fast and convenient, without the need to rely on cumbersome tools and complex operation steps, greatly improving the efficiency and accuracy of collimating lens replacement, effectively ensuring the smooth progress of the experiment and the reliability of the experimental results, and fundamentally solving the technical problems in the background art such as the difficult flexible adjustment of the focusing effect and transmission distance of the laser beam and the cumbersome replacement process of the collimating lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 is a schematic diagram of a partial structure of the utility model;

[0022] Figure 3 is a cross-sectional view of the lens component of the utility model;

[0023] Figure 4 is a schematic diagram of the connection situation between the collimating lens outer frame and the first magnetic attraction ring of the utility model;

[0024] Figure 5 is a schematic diagram of the connection situation between the connection frame and the second magnetic attraction ring of the utility model.

[0025] In the figure: 1, base; 2, helium-neon laser; 3, laser emitting head; 4, optical fiber; 5, rotation adjustment component; 501, vertical frame; 502, horizontal frame; 503, horizontal threaded rod; 504, connecting rod; 505, turning handle; 6, lens component; 601, connection frame; 602, collimating lens outer frame; 603, lug; 604, limiting convex rod; 605, through groove; 606, first magnetic attraction ring; 607, second magnetic attraction ring; 608, collimating lens. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0027] As Figures 1 to 5 shown, a laser light source device for a Michelson interferometer includes a base 1, and it further includes:

[0028] The vertical frame 501 is fixedly installed on the base 1;

[0029] The horizontal frame 502 is slidably arranged on the vertical frame 501;

[0030] The connecting rod 504 has one end fixedly connected to the vertical frame 501 and the other end connected to the rotation adjustment component 5;

[0031] The lens component 6 is installed on the horizontal frame 502. The rotation adjustment component 5 is used to drive the lens component 6 on the horizontal frame 502 to move. The lens component 6 includes a connection frame 601 and a collimator. The connection frame 601 is fixed at the end of the horizontal frame 502. A second magnetic attraction ring 607 and a limit convex rod 604 are arranged on the connection frame 601. The collimator includes a collimator outer frame 602 and a collimator lens 608. Lugs 603, a first magnetic attraction ring 606 and a through groove 605 are arranged on the collimator outer frame 602. The collimator outer frame 602 is magnetically connected and fixed to the connection frame 601 through the first magnetic attraction ring 606 and is snap-connected to the limit convex rod 604 through the through groove 605;

[0032] The helium-neon laser 2 and the laser output head 3. The output end of the helium-neon laser 2 is connected to the laser output head 3 through the optical fiber 4, and the laser output head 3 is installed on the top of the vertical frame 501.

[0033] Key components such as the helium-neon laser 2, the laser output head 3 and the optical fiber 4 are added, thus forming a complete laser light source system. Specifically, the helium-neon laser 2, as the core component of the laser light source, is used to generate a laser beam with a specific wavelength. The helium-neon laser 2 has been widely used in the field of precision optical measurement due to its good wavelength stability, high coherence and excellent beam quality of the output laser, and is very suitable as the light source of the Michelson interferometer. The optical fiber 4 is used as the medium for laser transmission. One end of it is connected to the output end of the helium-neon laser 2, and the other end is connected to the laser output head 3. Its function is to transmit the laser beam generated by the helium-neon laser 2 to the laser output head 3 efficiently and stably. The laser output head 3 is responsible for emitting the laser beam transmitted by the optical fiber 4 in a specific form (for example, point light source, parallel light, etc.) and incident on the collimator lens 608 in the lens component 6. It should be particularly noted that the laser output head 3 is installed on the side of the lens component 6 close to the collimator lens 608. Such an installation position enables the laser beam emitted by the laser output head 3 to be directly incident on the collimator lens 608. After the collimation of the collimator lens 608, a parallel light beam is formed, providing a high-quality light source for the subsequent Michelson interference experiment.

[0034] As an implementation manner of the present utility model, the connection frame 601 has an annular structure, and both the second magnetic attraction ring 607 and the limiting convex rod 604 are provided on the annular side wall of the connection frame 601.

[0035] Specifically, the annular structure of the connection frame 601 can be understood as a closed annular frame, which is common and easy to implement in the field of mechanical design and manufacturing. By adopting the annular structure, the connection frame 601 can better adapt to the collimator outer frame 602, which is usually also annular, thereby providing a structural basis for the installation and fixation of the collimator. The second magnetic attraction ring 607 and the limiting convex rod 604 are provided on the annular side wall of the connection frame 601, indicating that these components are arranged along the circumferential direction of the annular connection frame 601, rather than on the end face of the connection frame 601. This arrangement is conducive to forming an effective magnetic attraction force between the first magnetic attraction ring 606 and the second magnetic attraction ring 607, and facilitating the alignment and engagement of the limiting convex rod 604 with the through groove 605.

[0036] As an implementation manner of the present utility model, the collimator outer frame 602 also has an annular structure, and the lug 603, the first magnetic attraction ring 606 and the through groove 605 are all provided on the annular side wall of the collimator outer frame 602, and the annular structure of the collimator outer frame 602 is adapted to the annular structure of the connection frame 601.

[0037] As an implementation manner of the present utility model, there are two lugs 603, and the two lugs 603 protrude outward in the radial direction of the annular side wall of the collimator outer frame 602, and the two lugs 603 are symmetrically arranged along the circumferential direction of the annular side wall.

[0038] The two lugs 603 protruding outward in the radial direction of the annular side wall of the collimator outer frame 602 means that the lugs 603 extend outward from the annular side wall, which is convenient for the user's fingers to pinch and apply force. And "symmetrically arranged along the circumferential direction of the annular side wall" further clarifies the relative position relationship of the two lugs 603 on the annular side wall, that is, the two lugs 603 are symmetrically distributed relative to each other on the annular side wall with the annular center as the center of symmetry. This symmetrical arrangement enables the user to apply force more naturally and balancedly when pinching the two lugs 603 with fingers, avoiding the deflection of the collimator outer frame 602, and thus more easily and accurately realizing the disassembly and installation operations of the collimator.

[0039] As an implementation manner of the present utility model, both the first magnetic attraction ring 606 and the second magnetic attraction ring 607 are annular magnets.

[0040] By defining the first magnetic attraction ring 606 and the second magnetic attraction ring 607 as annular magnets, the shape of the magnetic attraction rings is made more coordinated with the annular structures of the connection frame 601 and the collimator outer frame 602, which not only improves the stability and reliability of the magnetic attraction connection, but also makes the overall structure of the lens component 6 more compact and beautiful.

[0041] As an implementation manner of the present utility model, the through groove 605 is a strip-shaped groove that is recessed inward along the radial direction of the annular side wall of the collimator outer frame 602.

[0042] It is clear that the specific structure of the through groove 605 is a strip-shaped groove that is recessed radially inward. This structural design makes the structure of the through groove 605 clearer and more specific. It is not only easy to process and manufacture, but also can form an effective cooperation with the limit convex rod 604, so as to more reliably achieve the limiting and guiding effects on the collimator outer frame 602, ensure the rapid and accurate installation of the collimator, and further improve the overall performance and user-friendliness of the laser light source device.

[0043] As an implementation manner of the present utility model, the limit convex rod 604 is a cylindrical convex structure, and the diameter of the limit convex rod 604 is adapted to the width of the through groove 605.

[0044] In this embodiment, the limit convex rod 604 is further defined as a "cylindrical convex structure". This structural form has the advantages of simple processing, good strength, and easy cooperation with other components. The cylindrical convex structure, as the name implies, means that the overall shape of the limit convex rod 604 is a cylinder, protruding from the side wall of the connection frame 601 to form a columnar protrusion. This cylindrical limit convex rod 604 can be conveniently inserted into the aforementioned strip-shaped through groove 605 to achieve the limiting and guiding effects on the collimator outer frame 602.

[0045] As an implementation manner of the present utility model, the rotation adjustment component 5 includes a rotating handle 505 and a transverse threaded rod 503. The rotating handle 505 is fixedly connected to one end of the transverse threaded rod 503. The other end of the transverse threaded rod 503 passes through the connecting rod 504 and is rotatably connected to the side wall of the vertical frame 501. The surface of the transverse threaded rod 503 is threadedly connected to the transverse frame 502. By rotating the rotating handle 505, the transverse threaded rod 503 is driven to rotate, so that the transverse frame 502 slides horizontally on the vertical frame 501.

[0046] During use, by rotating the rotating handle 505 to drive the transverse threaded rod 503 to rotate, the transverse frame 502 connected to the lens component 6 is driven to slide horizontally along the vertical frame 501, and then the collimator lens 608 is driven to move, so as to realize the position adjustment of the collimator lens 608, and finally change the distance between the collimator lens 608 and the laser emitting head 3.

[0047] As an implementation manner of the present utility model, a mounting seat for placing a helium-neon laser 2 is further provided on the base 1; in order to further improve the integration and use convenience of the laser light source device, the present utility model specially designs a mounting seat on the base 1, and its main function is to stably place the helium-neon laser 2

[0048] As an implementation manner of the present utility model, the vertical frame 501 is fixedly installed on the base 1 through fasteners.

[0049] The working principle of the present utility model:

[0050] The entire device is supported by the base 1. The output end of the helium-neon laser 2 is connected to the laser output head 3 through the optical fiber 4. The laser beam is emitted through the laser output head 3 and passes through the collimating mirror lens 608. The collimating mirror lens 608 uniformly refracts and converges the passing laser beam, so as to better convert the divergent light beam into a parallel light beam. The light beam emerging from the collimating mirror lens 608 enters the optical path system of the Michelson interferometer. The connecting rod 504 is fixedly connected to the vertical frame 501. By rotating the handle 505 in the rotation adjustment component 5, the transverse threaded rod 503 is driven to rotate. The transverse threaded rod 503 drives the transverse frame 502 to slide horizontally on the vertical frame 501. By moving the transverse frame 502, the entire lens component 6 is driven to move, and then the collimating mirror lens 608 is driven to move, thereby realizing the position adjustment of the collimating mirror lens 608, and finally changing the distance between the collimating mirror lens 608 and the laser output head 3. This adjustment method can flexibly control the focusing effect and transmission distance of the laser beam to meet diverse experimental conditions. By pulling two lugs 603 with two fingers, the first magnetic attraction ring 606 is separated from the second magnetic attraction ring 607, so that the collimating mirror outer frame 602 and the collimating mirror lens 608 can be removed. Thus, different collimating mirrors jointly composed of the collimating mirror outer frame 602, the lugs 603, the first magnetic attraction ring 606 and the collimating mirror lens 608 can be replaced according to the usage needs. Then, the first magnetic attraction ring 606 on the new collimating mirror outer frame 602 is magnetically attracted to the second magnetic attraction ring 607 on the side wall of the connection frame 601, and the quick fixing and installation of the collimating mirror can be completed. Through the mutual cooperation of the limit convex rod 604 on the connection frame 601 and the through groove 605 on the collimating mirror outer frame 602, by correspondingly inserting the limit convex rod 604 into the through groove 605, the collimating mirror outer frame 602 can be quickly aligned with the connection frame 601. This magnetic attraction type connection design not only facilitates the disassembly of the collimating mirror, but also ensures the accuracy and stability during the installation of a new collimating mirror. When replacing the new collimating mirror, only by magnetically attracting the first magnetic attraction ring 606 on the new collimating mirror outer frame 602 to the second magnetic attraction ring 607, the quick fixing and installation of the collimating mirror can be completed. At the same time, in order to further improve the installation accuracy and convenience, the device is also designed with a limit convex rod 604 and a through groove 605. When installing the collimating mirror outer frame 602, by correspondingly inserting the limit convex rod 604 into the through groove 605, the collimating mirror outer frame 602 can be quickly aligned with the connection frame 601, avoiding deviations and misalignments during the installation process and improving the work efficiency.

[0051] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present utility model. Without departing from the spirit and scope of the present utility model, various changes and improvements will occur to the present utility model, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A laser light source device for a Michelson interferometer, comprising a base (1), characterized in that: Also includes: A vertical frame (501) fixedly mounted on the base (1); A horizontal frame (502) slidably disposed on the vertical frame (501); A connecting rod (504), one end of which is fixedly connected to the vertical frame (501), and the other end of which is provided with a rotation adjustment component (5); A lens component (6) is mounted on the horizontal frame (502); the rotation adjustment component (5) is used to drive the lens component (6) on the horizontal frame (502) to move; the lens component (6) comprises a connecting frame (601) and a collimating lens; the connecting frame (601) is fixed to the end of the horizontal frame (502); a second magnetic ring (607) and a limiting convex rod (604) are provided on the connecting frame (601); the collimating lens comprises a collimating lens outer frame (602) and a collimating lens lens (608); the collimating lens outer frame (602) is provided with a convex ear (603), a first magnetic ring (606) and a through groove (605); the collimating lens outer frame (602) is fixed to the connecting frame (601) by magnetic connection with the first magnetic ring (606) and the second magnetic ring (607), and is snap-connected with the limiting convex rod (604) by the through groove (605); A helium-neon laser (2) and a laser output head (3), wherein the output end of the helium-neon laser (2) is connected to the laser output head (3) via an optical fiber (4), and the laser output head (3) is mounted on the top of the vertical frame (501); The rotation adjustment component (5) comprises a rotating handle (505) and a transverse threaded rod (503); the rotating handle (505) is fixedly connected to one end of the transverse threaded rod (503); the other end of the transverse threaded rod (503) passes through a connecting rod (504) and is rotationally connected to a side wall of the vertical frame (501); the surface of the transverse threaded rod (503) is threadedly connected to the horizontal frame (502); the rotating handle (505) is rotated to drive the transverse threaded rod (503) to rotate, so that the horizontal frame (502) slides horizontally on the vertical frame (501).

2. The laser light source device for Michelson interferometer according to claim 1, characterized in that: The connection frame (601) is an annular structure, and the second magnetic ring (607) and the limiting protruding rod (604) are both arranged on the annular side wall of the connection frame (601).

3. The laser light source device for Michelson interferometer according to claim 1, characterized in that: The collimator outer frame (602) also has an annular structure, and the lug (603), the first magnetic ring (606) and the through groove (605) are all arranged on the annular side wall of the collimator outer frame (602), and the annular structure of the collimator outer frame (602) is compatible with the annular structure of the connecting frame (601).

4. The laser light source device for Michelson interferometer according to claim 1, characterized in that: Two lugs (603) are provided, the two lugs (603) protrude outwards along the radial direction of the annular side wall of the collimator outer frame (602), and the two lugs (603) are symmetrically arranged along the circumferential direction of the annular side wall.

5. The laser light source device for Michelson interferometer according to claim 1, characterized in that: The first magnetic ring (606) and the second magnetic ring (607) are both annular magnets.

6. The laser light source device for Michelson interferometer according to claim 3, characterized in that: The through groove (605) is a strip-shaped groove that is recessed inwardly in the radial direction of the annular side wall of the collimator outer frame (602).

7. The laser light source device for Michelson interferometer according to claim 6, characterized in that: The limiting convex rod (604) is a cylindrical convex structure, and the diameter of the limiting convex rod (604) is matched to the width of the through groove (605).

8. The laser light source device for Michelson interferometer according to claim 1, characterized in that: The base (1) is also provided with a mounting seat for placing the helium-neon laser (2).

9. The laser light source device for Michelson interferometer according to claim 1, characterized in that: The vertical frame (501) is fixedly mounted on the base (1) via fasteners.

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