Multi-position light translation device and control method

Abstract

The invention relates to the technical field of imaging equipment, in particular to a multi-position light translation device and a control method. The multi-position light translation device comprises a fixed plate, a connecting plate, a phase plate and an angle adjusting mechanism, wherein the phase plate is connected with the fixed plate through the connecting plate; the angle adjusting mechanism is arranged between the connecting plate and the fixing plate and used for pulling the phase plate to rotate, so that the phase plate and the fixing plate are arranged in an adjustable mode at various angles, and multi-position scanning is achieved. Multi-angle adjustment of the phase plate can be achieved through the angle adjusting mechanism, deflection of light beams is achieved through rotation of the phase plate, complex motion of a displacement platform in the prior art is replaced with rotation of the phase plate, the motion inertia is smaller, the corresponding speed is higher, and millisecond-level response time can be achieved; in addition, the system also has the advantages of simple structure and small size, and is suitable for application scenes with limited space and high portability requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of imaging equipment, and in particular to a multi-position light translation device and a control method. Background Art

[0002] The beam translation device is designed to achieve spatial translation of the incident light beam and scan different spatial positions, and plays an important role in the fields of imaging and three-dimensional printing. The existing spatial scanning technology mainly uses a displacement platform to achieve the relative position change of the optical device and the light beam to achieve the effect of beam scanning, but its closed-loop response time is usually in the 10 millisecond level, and it is difficult to achieve faster position translation. Another beam translation technology is the extended pixel resolution technology (full name in English: Extended Pixel Resolution; English abbreviation: XPR), which uses electromagnetic effects to achieve the angle tilt of the glass sheet, thereby achieving the deflection of the incident light, and the response time can reach about 1 millisecond. However, this technology only has two translation positions and cannot be used for beam translation in multiple positions. Therefore, based on the beam translation technology in the prior art, there is an urgent need for a beam translation device with a short response time and capable of achieving multiple positions. Summary of the invention

[0003] The present invention provides a multi-position light translation device and a control method, which are used to solve the defects of the background technology that the response time is short and the light beam cannot be translated into multiple positions.

[0004] The present invention provides a multi-position light translation device, comprising: a fixing plate, a connecting plate, a phase plate and an angle adjustment mechanism; wherein:

[0005] The phase plate is connected to the fixing plate via the connecting plate; The angle adjustment mechanism is arranged between the connecting plate and the fixing plate, and is used for pulling the phase plate to rotate, so that the phase plate and the fixing plate can be adjusted between various angles to achieve multi-position scanning.

[0006] According to the multi-position light translation device provided by the present invention, the angle adjustment mechanism comprises: A plurality of first magnetic units, wherein the plurality of first magnetic units are sequentially arranged on the surface of the fixing plate along a horizontal direction; A plurality of second magnetic units, wherein the plurality of second magnetic units are sequentially arranged on the surface of the connecting plate along a horizontal direction, and each of the second magnetic units is arranged opposite to one of the first magnetic units; The first magnetic unit and the second magnetic unit relative to each other can be switched between a fitted state and a separated state, and the angle between the phase plate and the fixed plate can be adjusted through the fitted state and the separated state of each of the first magnetic unit and the second magnetic unit.

[0007] According to the multi-position light translation device provided by the present invention, the first magnetic units are arranged in sequence from the outside to the inside along the edge of the surface of the fixing plate; the second magnetic units are arranged in sequence from the outside to the inside along the edge of the surface of the connecting plate.

[0008] According to the multi-position light translation device provided by the present invention, the second magnetic units are respectively located on both sides of the phase plate, and the number of the second magnetic units located on one side of the phase plate is equal to the number of the second magnetic units located on the other side of the phase plate.

[0009] According to the multi-position light translation device provided by the present invention, the fixing plate is a first rectangular plate having a first square hole, and the phase plate is arranged opposite to the first square hole.

[0010] According to the multi-position light translation device provided by the present invention, the connecting plate is a second rectangular plate with elasticity, and the second rectangular plate is formed with a second square hole, the second rectangular plate is arranged opposite to the first rectangular plate, the second square hole is arranged opposite to the first square hole, and the phase plate is arranged in the second square hole.

[0011] According to the multi-position light translation device provided by the present invention, the first magnetic unit includes: an electromagnet.

[0012] According to the multi-position light translation device provided by the present invention, the second magnetic unit includes: a permanent magnet.

[0013] The present invention provides a control method for a multi-position light translation device, comprising: controlling the movement of an angle adjustment mechanism to pull a phase plate to rotate, so that the phase plate and a fixed plate can switch between multiple angles to achieve multi-position scanning.

[0014] According to the control method of the multi-position light translation device provided by the present invention, the angle adjustment mechanism is controlled to move so as to pull the phase plate to rotate to a first angle, so that the phase plate and the fixed plate form a first angle, so as to achieve first position scanning; By controlling the movement of the angle adjustment mechanism, the phase plate is pulled to rotate to a second angle, so that the phase plate and the fixed plate form a second angle, so as to achieve a second position scan; The angle adjustment mechanism is controlled to move so as to pull the phase plate to rotate to a third angle, so that the phase plate and the fixed plate form a third angle, so as to achieve third position scanning.

[0015] According to the control method of the multi-position light translation device provided by the present invention, the angle adjustment mechanism is composed of a plurality of electromagnets and a plurality of permanent magnets; By controlling the control circuit of the electromagnet, the N permanent magnets are fitted with the corresponding electromagnets, so that the phase plate and the fixed plate form a first angle, so as to achieve a first position scan; By controlling the control circuit of the electromagnet, the M permanent magnets are fitted with the corresponding electromagnets, so that the phase plate and the fixed plate form a second angle, so as to achieve a second position scan; Wherein, N and M are different numbers.

[0016] According to the control method of the multi-position light translation device provided by the present invention, the relationship between the scanning position and the angle between the phase plate and the fixed plate is:

[0017] In the formula, is the thickness of the phase plate, is the refractive index of the phase plate, for t The angle between the phase plate and the fixed plate, for t The scanning position corresponding to the time.

[0018] The present invention provides a multi-position light translation device, which includes: a fixed plate, a connecting plate, a phase plate and an angle adjustment mechanism. The phase plate is connected to the fixed plate through the connecting plate; the angle adjustment mechanism is arranged between the connecting plate and the fixed plate, and is used to pull the phase plate to rotate, so that the phase plate and the fixed plate can be adjusted between a variety of angles to achieve multi-position scanning. The present invention provides a multi-position light translation device, which can achieve multi-angle adjustment of the phase plate through the angle adjustment mechanism, and realize the deflection of the light beam by rotating the phase plate. The rotation of the phase plate is used to replace the complex movement of the displacement platform in the prior art, and the motion inertia is smaller, the response speed is faster, and the response time of milliseconds can be achieved; in addition, the multi-position light translation device provided by the present invention also has the advantages of simple structure and small size, and is suitable for application scenarios with limited space and high portability requirements.

[0019] Furthermore, a control method for a multi-position light translation device provided by the present invention is applied to the control method for a multi-position light translation device provided in an embodiment of the present invention. By controlling the angle adjustment mechanism, the phase plate is pulled to rotate so that the phase plate and the fixed plate switch between multiple angles to achieve multi-position scanning. This control method has the advantages of simple control and fast response. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic structural diagram of a phase plate in a multi-position light translation device provided in one embodiment of the present invention when the phase plate is at a horizontal angle.

[0022] Figure 2 In one embodiment of the present invention, the phase plate of the multi-position light translation device is located at Schematic diagram of the structure at an angle.

[0023] Figure 3 In one embodiment of the present invention, the phase plate of the multi-position light translation device is located at Schematic diagram of the structure at an angle.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of a multi-position light translation device provided in one embodiment of the present invention.

[0025] Reference numerals: 1: fixing plate; 2: connecting plate; 3: phase plate; 4: first magnetic unit; 5: second magnetic unit. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0031] Combine the following Figure 1-Figure 4 The invention describes a multi-position light translation device, which comprises a fixing plate 1, a connecting plate 2, a phase plate 3 and an angle adjustment mechanism.

[0032] Among them, the phase plate 3 is connected to the fixed plate 1 through the connecting plate 2; the angle adjustment mechanism is arranged between the connecting plate 2 and the fixed plate 1, which is used to pull the phase plate 3 to rotate, so that the phase plate 3 and the fixed plate 1 can be adjusted between multiple angles to achieve multi-position scanning.

[0033] Specifically, the fixed plate 1 is the fixing and supporting unit of the entire device. When the angle adjustment structure adjusts the angle of the phase plate 3, the fixed plate 1 always remains stationary. The fixed plate 1 and the connecting plate 2 provide an installation position for the angle adjustment mechanism and ensure that light can pass through the phase plate 3 area. The method that can be used is to design a through hole on the fixed plate 1.

[0034] The connecting plate 2 is located at the periphery of the phase plate 3, the phase plate 3 is connected to the fixed plate 1 through the connecting plate 2, and an angle adjustment mechanism is arranged between the connecting plate 2 and the fixed plate 1. The connecting plate 2 moves under the drive of the angle adjustment mechanism, thereby pulling the phase plate 3 for angle adjustment.

[0035] The angle adjustment mechanism can be adjusted at multiple angles to achieve adjustable settings between the phase plate 3 and the fixed plate 1 at multiple angles to achieve multi-position scanning.

[0036] like Figure 2 and Figure 3 As shown, the angle adjustment mechanism on the connecting plate 2 drives the connecting plates 2 on both sides of the phase plate 3 to move, thereby pulling the phase plate 3 to rotate. The angle adjustment mechanism can pull the phase plate 3 to rotate to different angles in different working states, such as Figure 2 As shown, the angle between the phase plate 3 and the fixed plate 1 is ,like Figure 3 As shown, the angle between the phase plate 3 and the fixed plate 1 is ,like Figure 2 and Figure 3 As shown, the phase plate 3 can be adjusted at multiple angles driven by the angle adjustment mechanism to achieve the deflection of the light beam, thereby achieving multi-position scanning.

[0037] The present invention provides a multi-position light translation device, which includes: a fixed plate 1, a connecting plate 2, a phase plate 3 and an angle adjustment mechanism. The phase plate 3 is connected to the fixed plate 1 through the connecting plate 2; the angle adjustment mechanism is arranged between the connecting plate 2 and the fixed plate 1, and is used to pull the phase plate 3 to rotate, so that the phase plate 3 and the fixed plate 1 can be adjusted between multiple angles to achieve multi-position scanning. The present invention provides a multi-position light translation device, which can achieve multi-angle adjustment of the phase plate 3 through the angle adjustment mechanism, and realize the deflection of the light beam by rotating the phase plate 3. The rotation of the phase plate 3 is used to replace the complex movement of the displacement platform in the prior art, and the motion inertia is smaller, the response speed is faster, and the response time of milliseconds can be achieved; in addition, the multi-position light translation device provided by the present invention also has the advantages of simple structure and small size, and is suitable for application scenarios with limited space and high portability requirements.

[0038] In one embodiment of the present invention, the angle adjustment mechanism includes: a plurality of first magnetic units 4 and a plurality of second magnetic units 5. The plurality of first magnetic units 4 are sequentially arranged on the surface of the fixed plate 1 along the horizontal direction; the plurality of second magnetic units 5 are sequentially arranged on the surface of the connecting plate 2 along the horizontal direction, and each second magnetic unit 5 is arranged opposite to a first magnetic unit 4. Among them, the relative first magnetic unit 4 and the second magnetic unit 5 can switch between the bonding state and the separation state, and the angle between the phase plate 3 and the fixed plate 1 is adjusted by the bonding state and the separation state of each first magnetic unit 4 and the second magnetic unit 5. In this embodiment, an electromagnetically controlled magnetic unit is used to realize the control of the rotation angle of the phase plate 3. The electromagnetic control has the advantages of fast response, simple circuit, and smaller overall device volume. Specifically, by setting a plurality of sets of relative first magnetic units 4 and second magnetic units 5, electromagnetic control can be used to quickly adjust between the bonding state and the separation state, and by adjusting the working state of different magnetic units, the rotation angle of the phase plate 3 can be adjusted; moreover, by setting a plurality of sets of magnetic units, multiple angle adjustments of the phase plate 3 can also be realized.

[0039] In the above embodiment, the magnetic properties of the magnetic units on the left and right sides can be changed to produce different bonding states and separation states. Figure 2 As shown, the two first magnetic units 4 and the second magnetic units 5 on the left are in a fitted state, and the other first magnetic units 4 and the second magnetic units 5 are in a separated state. At this time, the phase plate 3 generates a first angle; Figure 3 As shown, the three first magnetic units 4 and the second magnetic units 5 on the left are in a fitted state, and the other first magnetic units 4 and the second magnetic units 5 are in a separated state. At this time, the phase plate 3 generates a second angle. It can be seen that by controlling the fitted state and the separated state of different groups of magnetic units, the rotating plate can be driven to achieve different angles of adjustment, thereby realizing the function of multi-position scanning.

[0040] It should be understood that the present invention is not limited to Figures 1 to 3 Three groups of first magnetic units 4 and second magnetic units 5 are provided. According to actual needs, multiple groups of first magnetic units 4 and second magnetic units 5 can be provided to meet the needs of multi-position scanning.

[0041] In one embodiment of the present invention, the first magnetic unit 4 is sequentially arranged along the edge of the surface of the fixed plate 1 from the outside to the inside; the second magnetic unit 5 is sequentially arranged along the edge of the surface of the connecting plate 2 from the outside to the inside. In order to improve the accuracy of the rotation angle of the rotating plate, multiple first magnetic units 4 are sequentially arranged on the surface of the fixed plate 1 from the outside to the inside, and multiple second magnetic units 5 are sequentially arranged on the surface of the connecting plate 2 from the outside to the inside, that is, Figures 1 to 3 The arrangement method in the embodiment adjusts the fitting state and the separation state from the outside to the inside.

[0042] In one embodiment of the present invention, the second magnetic units 5 are respectively located on both sides of the phase plate 3, and the number of the second magnetic units 5 located on one side of the phase plate 3 is equal to the number of the second magnetic units 5 located on the other side of the phase plate 3. In the specific implementation of this embodiment, the second magnetic units 5 located on both sides of the phase plate 3 are adjusted to be in a fitted state or a separated state, such as Figure 2 and Figure 3 As shown, the second magnetic unit 5 on the left is attached to the first magnetic unit 4, and the second magnetic unit 5 on the right is separated from the first magnetic unit 4, so the left end of the phase plate 3 is tilted downward and the right end is tilted upward. By adjusting the number of attached magnetic units on the left, the tilt angle of the phase plate 3 can be adjusted accordingly, that is, the angle between the phase plate 3 and the fixed plate 1 can be adjusted. If the number of second magnetic units 5 on the left and right sides is the same, the tilt direction of the phase plate 3 can be adjusted, that is, by adjusting the attached state and the separated state of the magnetic units, the phase plate 3 can also be tilted downward at the right end and tilted upward at the left end.

[0043] In one embodiment of the present invention, the fixed plate 1 is a first rectangular plate having a first square hole, and the phase plate 3 is arranged opposite to the first square hole. Specifically, the fixed plate 1 is a rectangular plate structure with a first square hole at the center, and the first square hole corresponds to the phase plate 3, and the size and shape of the phase plate 3 are consistent with the first square hole, so as to ensure that light can pass through the first square hole. A plurality of first magnetic units 4 are arranged on the surfaces of the four sides of the first rectangular plate, respectively. When the rotating plate is pulled to rotate, it is only necessary to control the first magnetic units 4 and the second magnetic units 5 on the opposite sides to fit or separate. The advantage of arranging the first magnetic units 4 on all four sides of the first rectangular plate is that the attraction state of the first magnetic unit 4 and the second magnetic unit 5 on the corresponding side can be adjusted, so as to pull the tilt direction of the rotating plate to meet the needs of multi-position scanning.

[0044] In one embodiment of the present invention, the connecting plate 2 is a second rectangular plate with elasticity, and the second rectangular plate is formed with a second square hole, the second rectangular plate is arranged opposite to the first rectangular plate, the second square hole is arranged opposite to the first square hole, and the phase plate 3 is arranged in the second square hole. In this embodiment, the size and shape of the second rectangular plate are the same as those of the first rectangular plate, but the second rectangular plate is made of elastic material, which has deformation ability. When the first magnetic unit 4 and the second magnetic unit 5 on both sides are in different attraction states, that is, Figure 2 and Figure 3 In the structure shown, the second rectangular plate produces a certain deformation to meet the rotation angle requirement of the rotating plate. When the first magnetic unit 4 and the second magnetic unit 5 on both sides are in a separated state, that is, Figure 1 In the structure shown, the second rectangular plate is horizontal.

[0045] In one embodiment of the present invention, the first magnetic unit 4 includes: an electromagnet; the second magnetic unit 5 includes: a permanent magnet. In this embodiment, the magnetism of the electromagnet can be controlled by the control circuit of the electromagnet, thereby controlling the attraction state of the electromagnet and the permanent magnet. When the magnetism of the electromagnet and the permanent magnet are opposite, the two attract each other and are in a fitting state, or the electromagnet is non-magnetic and the two are in a fitting state due to gravity; when the magnetism of the electromagnet and the permanent magnet is the same, the two repel each other and are in a separated state.

[0046] The present invention also provides a control method for a multi-position light translation device, which includes: controlling the angle adjustment mechanism to move, so as to pull the phase plate 3 to rotate, so that the phase plate 3 and the fixed plate 1 switch between multiple angles, so as to achieve multi-position scanning.

[0047] A control method for a multi-position light translation device provided by the present invention is applied to the control method for a multi-position light translation device provided in an embodiment of the present invention. By controlling the angle adjustment mechanism, the phase plate 3 is pulled to rotate, so that the phase plate 3 and the fixed plate 1 are switched between multiple angles to achieve multi-position scanning. The control method has the advantages of simple control and fast response.

[0048] In one embodiment of the present invention, during the three-position scanning process, the control method of the multi-position light translation device specifically includes: S1, controlling the movement of the angle adjustment mechanism to pull the phase plate 3 to rotate to a first angle, so that the phase plate 3 and the fixed plate 1 form a first angle to achieve a first position scan; S2, controlling the movement of the angle adjustment mechanism to pull the phase plate 3 to rotate to a second angle, so that the phase plate 3 and the fixed plate 1 form a second angle, so as to achieve a second position scan; S3. Control the movement of the angle adjustment mechanism to pull the phase plate 3 to rotate to a third angle, so that the phase plate 3 and the fixed plate 1 form a third angle to achieve third position scanning.

[0049] The above embodiment provides a method for the rotating plate to rotate to three different angles by moving the angle adjustment mechanism. Of course, if it is necessary to adjust to other positions for scanning, the angle adjustment mechanism can be further adjusted.

[0050] In one embodiment of the present invention, the angle adjustment mechanism is composed of a plurality of electromagnets and a plurality of permanent magnets. During the three-position scanning process,

[0051] The above step S1 specifically includes: controlling the control circuit of the electromagnet to make N permanent magnets fit with the corresponding electromagnets, so that the phase plate 3 and the fixed plate 1 form a first angle to achieve the first position scanning.

[0052] The above step S2 specifically includes: controlling the control circuit of the electromagnet to make the M permanent magnets fit with the corresponding electromagnets, so that the phase plate 3 and the fixed plate 1 form a second angle to achieve the second position scanning.

[0053] The above step S3 specifically includes: controlling the control circuit of the electromagnet to make the L permanent magnets fit with the corresponding electromagnets, so that the phase plate 3 and the fixed plate 1 form a third angle to achieve the third position scanning.

[0054] Among them, N, M and L in the above steps are different numbers, which means that different numbers of permanent magnets are controlled to fit with corresponding electromagnets in steps S1, S2 and S3, so as to adjust the phase plate 3 to rotate to different angles and realize scanning at different positions.

[0055] In one embodiment of the present invention, the relationship between the scanning position and the angle between the phase plate 3 and the fixed plate 1 is:

[0056] In the formula, is the thickness of the phase plate 3, is the refractive index of the phase plate 3, for t The angle between the phase plate 3 and the fixed plate 1 at the moment, for t In the specific implementation of the present invention, the thickness and refractive index of the phase plate 3 are both fixed values. According to the above formula, the scanning position is related to the angle between the phase plate 3 and the fixed plate 1.

[0057] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-position light translation device, characterized in that: include: A fixing plate (1), a connecting plate (2), a phase plate (3) and an angle adjustment mechanism; wherein: The phase plate (3) is connected to the fixing plate (1) via the connecting plate (2); The angle adjustment mechanism is arranged between the connecting plate (2) and the fixing plate (1), and is used to pull the phase plate (3) to rotate, so that the angle between the phase plate (3) and the fixing plate (1) can be adjusted between various angles to achieve multi-position scanning.

2. The multi-position light translation device according to claim 1, characterized in that: The angle adjustment mechanism comprises: A plurality of first magnetic units (4), wherein the plurality of first magnetic units (4) are sequentially arranged on the surface of the fixing plate (1) along a horizontal direction; a plurality of second magnetic units (5), wherein the plurality of second magnetic units (5) are arranged in sequence on the surface of the connecting plate (2) along a horizontal direction, and each of the second magnetic units (5) is arranged opposite to one of the first magnetic units (4); The first magnetic unit (4) and the second magnetic unit (5) relative to each other are capable of switching between a fitted state and a separated state, and the angle between the phase plate (3) and the fixed plate (1) is adjusted by the fitted state and the separated state of the first magnetic unit (4) and the second magnetic unit (5).

3. The multi-position light translation device according to claim 2, characterized in that: The first magnetic units (4) are arranged in sequence from the outside to the inside along the edge of the surface of the fixing plate (1); and the second magnetic units (5) are arranged in sequence from the outside to the inside along the edge of the surface of the connecting plate (2).

4. The multi-position light translation device according to claim 3, characterized in that: The second magnetic units (5) are respectively located on both sides of the phase plate (3), and the number of the second magnetic units (5) located on one side of the phase plate (3) is equal to the number of the second magnetic units (5) located on the other side of the phase plate (3).

5. The multi-position light translation device according to claim 2, characterized in that: The fixing plate (1) is a first rectangular plate having a first square hole, and the phase plate (3) is arranged opposite to the first square hole.

6. The multi-position light translation device according to claim 5, characterized in that: The connecting plate (2) is a second rectangular plate with elasticity, and the second rectangular plate is formed with a second square hole, the second rectangular plate is arranged opposite to the first rectangular plate, the second square hole is arranged opposite to the first square hole, and the phase plate (3) is arranged in the second square hole.

7. The multi-position light translation device according to any one of claims 2 to 6, characterized in that: The first magnetic unit (4) comprises: an electromagnet.

8. The multi-position light translation device according to any one of claims 2 to 6, characterized in that: The second magnetic unit (5) comprises: a permanent magnet.

9. A control method for a multi-position light translation device, characterized in that: include: By controlling the movement of the angle adjustment mechanism, the phase plate (3) is pulled to rotate, so that the phase plate (3) and the fixed plate (1) are switched between various angles, thereby realizing multi-position scanning.

10. The control method of the multi-position light translation device according to claim 9, characterized in that: Controlling the movement of the angle adjustment mechanism to pull the phase plate (3) to rotate to a first angle, so that the phase plate (3) and the fixed plate (1) form a first angle, so as to achieve first position scanning; Controlling the movement of the angle adjustment mechanism to pull the phase plate (3) to rotate to a second angle, so that the phase plate (3) and the fixed plate (1) form a second angle, thereby achieving second position scanning; By controlling the movement of the angle adjustment mechanism, the phase plate (3) is pulled to rotate to a third angle, so that the phase plate (3) and the fixed plate (1) form a third angle, thereby achieving third position scanning.

11. The control method of the multi-position light translation device according to claim 10, characterized in that: The angle adjustment mechanism is composed of a plurality of electromagnets and a plurality of permanent magnets; By controlling the control circuit of the electromagnet, the N permanent magnets are fitted with the corresponding electromagnets, so that the phase plate (3) and the fixed plate (1) form a first angle, thereby achieving a first position scan; By controlling the control circuit of the electromagnet, the M permanent magnets are made to fit with the corresponding electromagnets, so that the phase plate (3) and the fixed plate (1) form a second angle, thereby achieving second position scanning; By controlling the control circuit of the electromagnet, the L permanent magnets are fitted with the corresponding electromagnets, so that the phase plate (3) and the fixed plate (1) form a third angle, thereby achieving third position scanning; Among them, N, M and L are different numbers.

12. The control method of the multi-position light translation device according to any one of claims 9 to 11, characterized in that: The relationship between the scanning position and the angle between the phase plate (3) and the fixed plate (1) is: In the formula, is the thickness of the phase plate (3), is the refractive index of the phase plate (3), for t The angle between the moment phase plate (3) and the fixed plate (1), for t The scanning position corresponding to the time.

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