Adjustable vortex beam phase plate module

Abstract

The utility model relates to the field of vortex light beam phase plate especially, a kind of adjustable vortex light beam phase plate module, comprising: phase plate shell is provided with hollow inner chamber, the front side of phase plate shell is equipped with threaded hole;Threaded rod, is arranged in the inside of threaded hole;Vortex phase plate, is installed in the inside of phase plate shell. By phase plate shell can play the role of protection to vortex phase plate, reduce the wear and tear of vortex phase plate, the engagement rotary connection of connecting shaft and connecting hole, vortex phase plate and phase plate shell can be well connected, simultaneously using connecting shaft and connecting hole can well drive vortex phase plate rotation, adjust vortex phase plate, the threaded rotary connection between threaded rod and threaded hole, the position of rubber pad is conveniently adjusted, when rubber pad is in contact with vortex phase plate, vortex phase plate can be positioned, effectively prevent vortex phase plate rotation, protective film can play the role of protection to the bottom surface of phase plate shell.

Description

Technical Field

[0001] This utility model relates to the field of vortex beam phase plate technology, and in particular to an adjustable vortex beam phase plate module. Background Technology

[0002] A vortex beam phase plate (spiral phase plate) is an optical element that controls the phase distribution of a beam through a spiral stepped structure, converting a Gaussian beam into a vortex beam with orbital angular momentum. Its core function is to impart a spiral phase characteristic to the beam, thereby altering its energy distribution. The surface of the spiral phase plate exhibits a spiral stepped structure, with the step height proportional to the azimuth angle rotation. When the beam passes through, the change in optical path varies at different azimuth angles, causing the transmitted beam to acquire a spiral phase factor, ultimately forming a vortex beam with a ring-shaped energy distribution. This structure endows the beam with orbital angular momentum, allowing energy to diffuse outward from the center.

[0003] The core drawback of the existing technology is that the vortex beam phase plate can be damaged by contact with external objects, which shortens the service life of the vortex beam phase plate and makes it inconvenient to adjust the direction of the vortex. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable vortex beam phase plate module, which aims to solve the problem of inconvenience in adjustment in the above-mentioned technical issues.

[0005] The technical solution adopted in this utility model is as follows:

[0006] An adjustable vortex beam phase plate module includes:

[0007] The phase plate housing has a hollow inner cavity, and a threaded hole is provided on the front side of the phase plate housing.

[0008] The threaded rod passes through the inside of the threaded hole;

[0009] A vortex phase plate is installed inside the phase plate housing.

[0010] This utility model also has the following technical features:

[0011] In one embodiment of this utility model, a connecting shaft is fixed to the inner bottom surface of the phase plate housing, and a protective film is disposed on the bottom surface of the phase plate housing.

[0012] In one embodiment of this utility model, a handle is fixed to the front end of the threaded rod, and the threaded rod is threadedly connected to the threaded hole.

[0013] In one embodiment of this utility model, a rubber pad is provided on the rear side of the threaded rod.

[0014] In one embodiment of this utility model, a connecting plate is fixed to the bottom of the vortex phase plate, and a connecting hole is provided on the bottom surface of the connecting plate.

[0015] In one embodiment of this utility model, the connecting hole and the connecting shaft are in a snap-fit ​​rotatable connection.

[0016] In one embodiment of this utility model, the bottom surface of the connecting disk is a smooth surface, and the connecting disk rotates inside the phase plate housing.

[0017] In one embodiment of this utility model, the phase plate shell and the protective film are bonded together.

[0018] Compared with existing technologies, the beneficial effects of this utility model are as follows: the phase plate shell can protect the vortex phase plate, reducing its wear; the engaging and rotating connection between the connecting shaft and the connecting hole can effectively connect the vortex phase plate to the phase plate shell; simultaneously, the connecting shaft and connecting hole can effectively drive the vortex phase plate to rotate, thereby adjusting the vortex phase plate; the threaded rotational connection between the threaded rod and the threaded hole facilitates the adjustment of the rubber pad's position; when the rubber pad deeply contacts the vortex phase plate, it can position the vortex phase plate, effectively preventing its rotation; the protective film can protect the bottom surface of the phase plate shell, reducing its wear; and the adhesive connection between the protective film and the phase plate shell facilitates its replacement; the vortex phase plate, through its spiral stepped structure, applies an azimuth-related phase delay to the transmitted beam, converting the Gaussian beam into a vortex beam with a ring energy distribution. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main three-dimensional structure of an adjustable vortex beam phase plate module in one embodiment of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the protective dust cover of an adjustable vortex beam phase plate module according to one embodiment of the present invention.

[0021] Figure 3 This is a bottom-view three-dimensional structural diagram of an adjustable vortex beam phase plate module according to one embodiment of the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the threaded rod of an adjustable vortex beam phase plate module according to one embodiment of the present invention.

[0023] Explanation of icon numbers:

[0024] 10. Phase plate housing; 11. Threaded hole; 12. Connecting shaft; 13. Protective film;

[0025] 20. Threaded rod; 21. Handle; 22. Rubber pad;

[0026] 30. Vortex phase plate; 31. Connecting disc; 32. Connecting hole. Detailed Implementation

[0027] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0028] The illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0029] It should be noted that the core defect of an existing adjustable vortex beam phase plate module is that the vortex beam phase plate can be damaged by contact with external objects, shortening its service life, and making it inconvenient to adjust the direction of the vortex. To address this, an adjustable vortex beam phase plate module is proposed, comprising a phase plate housing 10 with a hollow inner cavity, a threaded hole 11 on the front side of the phase plate housing 10, a threaded rod 20 passing through the threaded hole 11, and a vortex phase plate 30 installed inside the phase plate housing 10.

[0030] In one embodiment, a connecting shaft 12 is fixed to the inner bottom surface of the phase plate housing 10, and a protective film 13 is disposed on the bottom surface of the phase plate housing 10. The protective film 13 can protect the bottom surface of the phase plate housing 10 and reduce the wear of the phase plate housing 10. At the same time, the protective film 13 is bonded to the phase plate housing 10, which facilitates the replacement of the protective film 13. The phase plate housing 10 can protect the vortex phase plate 30 and reduce the wear of the vortex phase plate 30.

[0031] In one embodiment, a handle 21 is fixed to the front end of the threaded rod 20, and the threaded rod 20 is threadedly connected to the threaded hole 11.

[0032] In one embodiment, a rubber pad 22 is provided on the rear side of the threaded rod 20. The threaded rod 20 and the threaded hole 11 are connected by a threaded rotation, which facilitates the adjustment of the position of the rubber pad 22. When the rubber pad 22 is deeply inserted and in contact with the vortex phase plate 30, it can play a positioning role for the vortex phase plate 30 and effectively prevent the vortex phase plate 30 from rotating.

[0033] In one embodiment, a connecting disk 31 is fixed to the bottom of the vortex phase plate 30, and a connecting hole 32 is provided on the bottom surface of the connecting disk 31. The vortex phase plate 30 applies an azimuth-related phase delay to the transmitted beam through a spiral stepped structure, converting the Gaussian beam into a vortex beam with a ring energy distribution.

[0034] In one embodiment, the connecting hole 32 and the connecting shaft 12 are engaged and rotated. The engaging and rotating connection between the connecting shaft 12 and the connecting hole 32 can effectively connect the vortex phase plate 30 and the phase plate housing 10. At the same time, the connecting shaft 12 and the connecting hole 32 can effectively drive the vortex phase plate 30 to rotate, thereby adjusting the vortex phase plate 30.

[0035] In one embodiment, the bottom surface of the connecting disk 31 is a smooth surface, and the connecting disk 31 rotates inside the phase plate housing 10.

[0036] In one embodiment, the phase plate housing 10 and the protective film 13 are bonded together.

[0037] In one embodiment, see Figure 1 and Figure 2 The protective film 13 can protect the bottom surface of the phase plate housing 10 and reduce the wear of the phase plate housing 10. At the same time, the protective film 13 is attached to the phase plate housing 10, which makes it easy to replace the protective film 13. The phase plate housing 10 can protect the vortex phase plate 30 and reduce the wear of the vortex phase plate 30.

[0038] In another embodiment, see Figure 3 and Figure 4 The threaded rotational connection between the threaded rod 20 and the threaded hole 11 facilitates the adjustment of the position of the rubber pad 22. When the rubber pad 22 is deeply inserted and in contact with the vortex phase plate 30, it can position the vortex phase plate 30 and effectively prevent the vortex phase plate 30 from rotating. The engaging rotational connection between the connecting shaft 12 and the connecting hole 32 can effectively connect the vortex phase plate 30 to the phase plate housing 10. At the same time, the connecting shaft 12 and the connecting hole 32 can effectively drive the vortex phase plate 30 to rotate, thereby adjusting the vortex phase plate 30. The vortex phase plate 30 applies an azimuth-related phase delay to the transmitted beam through a spiral stepped structure, converting the Gaussian beam into a vortex beam with a ring energy distribution.

[0039] In summary, this utility model discloses an adjustable vortex beam phase plate module. The vortex phase plate 30 is placed inside the phase plate housing 10, such that the connecting hole 32 inside the bottom connecting plate 31 of the vortex phase plate 30 connects with the connecting shaft 12 of the phase plate housing 10, forming a locking and rotating connection. Simultaneously, rotating the vortex phase plate 30 adjusts its spiral position. The vortex phase plate 30, through its spiral stepped structure, applies an azimuth-related phase delay to the transmitted beam, converting the Gaussian beam into a vortex beam with a ring-shaped energy distribution. Adjustment... After that, rotate the threaded rod 20 so that the rubber pad 22 at the rear end of the threaded rod 20 penetrates and contacts the vortex phase plate 30, which can position the vortex phase plate 30 and effectively prevent the vortex phase plate 30 from rotating. The phase plate housing 10 can protect the vortex phase plate 30 and reduce the wear of the vortex phase plate 30. The protective film 13 can protect the bottom surface of the phase plate housing 10 and reduce the wear of the phase plate housing 10. At the same time, the protective film 13 is attached to the phase plate housing 10, which makes it easy to replace the protective film 13.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable vortex beam phase plate module, characterized in that, include: The phase plate housing (10) has a hollow inner cavity, and a threaded hole (11) is provided on the front side of the phase plate housing (10). A threaded rod (20) passes through the inside of the threaded hole (11); A vortex phase plate (30) is installed inside the phase plate housing (10).

2. The adjustable vortex beam phase plate module according to claim 1, characterized in that, A connecting shaft (12) is fixed to the inner bottom surface of the phase plate housing (10), and a protective film (13) is placed on the bottom surface of the phase plate housing (10).

3. The adjustable vortex beam phase plate module according to claim 1, characterized in that, The threaded rod (20) has a handle (21) fixed at its front end, and the threaded rod (20) is threadedly connected to the threaded hole (11).

4. An adjustable vortex beam phase plate module according to claim 1, characterized in that, A rubber pad (22) is placed on the rear side of the threaded rod (20).

5. An adjustable vortex beam phase plate module according to claim 1, characterized in that, The bottom of the vortex phase plate (30) is fixed with a connecting plate (31), and the bottom surface of the connecting plate (31) is provided with a connecting hole (32).

6. An adjustable vortex beam phase plate module according to claim 5, characterized in that, The connecting hole (32) and the connecting shaft (12) are connected by a snap-fit ​​rotation.

7. An adjustable vortex beam phase plate module according to claim 5, characterized in that, The bottom surface of the connecting disk (31) is smooth, and the connecting disk (31) rotates inside the phase plate outer shell (10).

8. An adjustable vortex beam phase plate module according to claim 1, characterized in that, The phase plate shell (10) and the protective film (13) are bonded together.

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