Pixel multiplication device and pixel multiplication method

Abstract

The application provides a pixel multiplication device and a pixel multiplication method, and aims at solving the technical problem that the existing pixel multiplication device has a twisted shaft which is easy to be inclined or swing, and thus the deflection position precision of an optical lens is low. The pixel multiplication device of the application makes the X twisted shaft formed by two fixed anchor points and a movable anchor point arranged along an X axis coincide with the ideal motion axis of the X axis, and makes the Y twisted shaft formed by two fixed anchor points and a movable anchor point arranged along a Y axis coincide with the ideal motion axis of the Y axis. The motion axis formed by the four anchor points is more stable. Compared with the fixed anchor points being located at the four corners of the elastic sheet, the application makes the fixed anchor points and the movable anchor points be located on the corresponding twisted shafts, so that the influence of the asymmetric factors introduced during the fixing of the elastic sheet on the twisted shaft can be effectively reduced, and thus a stable motion axis is obtained, and the optical lens has a higher deflection position precision, the pixel multiplication is realized, and the imaging effect is improved.

Description

Technical Field

[0001] This invention belongs to the field of optical imaging, and specifically relates to a pixel multiplication device and a pixel multiplication method. Background Technology

[0002] By rapidly switching optical lenses at multiple deflection positions, the pixel multiplication device refracts the imaging beams of multiple incident subframes one-to-one onto multiple positions on the imaging surface. The image frame formed by the superposition of subframes at multiple positions has a pixel count that is the product of the pixel count of the subframe and the number of positions, thus achieving a pixel multiplication effect without increasing the pixel count of the projection chip.

[0003] The imaging performance of a pixel-multiplying device is closely related to the accuracy of the optical lens at multiple deflection positions, and a stable axis of motion is key to obtaining accurate and stable deflection positions. However, existing pixel-multiplying devices generally suffer from unstable axes of motion. For example, in Chinese inventions CN 113419322 A and CN 110275284A, a torsion axis coaxial with the ideal axis of motion is formed by movable anchor points on both sides of the spring, while the fixed anchor points are located at the four corners of the spring, not on the axis of motion. The asymmetry introduced when fixing the spring inevitably causes the torsion axis to deflect, or even sway during movement. The deflection or swaying of the torsion axis causes the two deflection axes to no longer be perpendicular to each other, thus causing them to couple and interfere with each other at adjacent deflection positions. On the other hand, it causes the deflection position to deviate from the ideal position, ultimately resulting in low accuracy of the optical lens's deflection position and affecting the imaging performance of the pixel-multiplying device. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problem that the torsion axis of existing pixel multiplication devices is prone to skew or wobbling, resulting in low accuracy of the deflection position of the optical lens, and to provide a new pixel multiplication device and pixel multiplication method.

[0005] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0006] A pixel multiplication device includes a circuit board, a spring, an optical lens, and 4N permanent magnets, where N = 1 or 2; its special feature is that the spring includes a movable part, four fixed anchor points, four movable anchor points, four first elastic beams, and four second elastic beams.

[0007] The first elastic beam includes a first arc-shaped beam and a first straight beam symmetrically connected at both ends of the first arc-shaped beam; the two mutually perpendicular axes of symmetry on the surface of the movable component are denoted as the X-axis and the Y-axis, respectively, and the outer wall of the movable component has arc-shaped notches concentrically arranged with the first arc-shaped beam at positions corresponding to the X-axis and the Y-axis; the first arc-shaped beam is located in the corresponding arc-shaped notch, and a first gap is provided between it and the arc-shaped notch; the center point of the outer wall of the first arc-shaped beam is connected to the center point of the inner wall of the arc-shaped notch through a movable anchor point; a second gap is provided between the first straight beam and the outer wall of the movable component;

[0008] The fixed anchor point is an arc shape concentrically arranged with the first arc beam and located in the arc-shaped recess formed by the first arc beam; a third gap is provided between the outer wall of the fixed anchor point and the inner wall of the first arc beam; the second elastic beam includes a second straight beam symmetrically connected to both ends of the fixed anchor point and located outside the first straight beam; a fourth gap is provided between the second straight beam and the first straight beam, and the ends of the two second straight beams away from the fixed anchor point are respectively connected to the other ends of the corresponding first straight beams by arcs; two fixed anchor points and a movable anchor point arranged along the X-axis form an X-torsion axis, and two fixed anchor points and a movable anchor point arranged along the Y-axis form a Y-torsion axis, which are used to make the movable part torsion around the X-torsion axis and the Y-torsion axis respectively;

[0009] A first light-transmitting hole is provided at the center of the movable part; the size of the optical lens is larger than the size of the first light-transmitting hole, and it is fixedly installed on the lower surface of the movable part, directly opposite the first light-transmitting hole; 2N permanent magnets are symmetrically arranged on the lower surface of the movable part along the X-axis, and the remaining 2N permanent magnets are symmetrically arranged on the lower surface of the movable part along the Y-axis.

[0010] A second light-transmitting hole is provided on the circuit board opposite the first light-transmitting hole; the spring is fixed to the upper surface of the circuit board by a fixing device, the optical lens is located in the second light-transmitting hole, and a fifth gap is provided between the optical lens and the side wall of the second light-transmitting hole; 4N built-in coils are provided on the circuit board opposite each permanent magnet to form 4N sets of electromagnetic actuators. The electromagnetic actuators on both sides of the X-axis generate driving forces of equal magnitude and opposite direction, and the electromagnetic actuators on both sides of the Y-axis generate driving forces of equal magnitude and opposite direction.

[0011] Furthermore, the first gap, the second gap, the third gap, and the fourth gap are greater than or equal to the thickness of the spring sheet;

[0012] The fifth gap is greater than or equal to 0.5 mm;

[0013] Each built-in coil includes one or two drive coils.

[0014] Furthermore, it also includes memory chips, temperature sensors, and control systems;

[0015] The memory chip is used to store the driving parameters of the pixel multiplication device;

[0016] The temperature sensor is used to measure the real-time temperature of the circuit board;

[0017] The signal output terminals of the memory chip and the temperature sensor are respectively connected to the signal input terminals of the control system. The voltage or current output terminals of the control system are connected to the input terminals of each built-in coil, which are used to adjust the driving parameters of the built-in coils according to the real-time temperature of the circuit board.

[0018] Furthermore, the fixing device includes four fastening screws and four patch copper nuts;

[0019] Each of the four fixed anchor points has a through hole;

[0020] The four patch copper nuts are respectively fixedly installed on the upper surface of the circuit board at the positions corresponding to the four through holes;

[0021] One end of each of the four fastening screws passes through a corresponding through hole and is connected to a corresponding patch copper nut.

[0022] Furthermore, the widths of the first and second straight beams are equal.

[0023] Furthermore, the spring sheet is provided with four spring sheet positioning holes for positioning the spring sheet during assembly.

[0024] Furthermore, the magnetic poles of the 4N permanent magnets are aligned in the same direction;

[0025] The N built-in coils located on one side of the Y-axis have the same winding direction, and the N built-in coils symmetrically located on the other side of the Y-axis have the same winding direction, but opposite to the winding direction of the N built-in coils on one side of the Y-axis; the N built-in coils located on one side of the X-axis have the same winding direction, and the N built-in coils symmetrically located on the other side of the X-axis have the same winding direction, but opposite to the winding direction of the N built-in coils on one side of the X-axis.

[0026] Furthermore, the N permanent magnets located on one side of the Y-axis have the same magnetic pole direction, and the N permanent magnets symmetrically located on the other side of the Y-axis have the same magnetic pole direction, but opposite to the magnetic pole direction of the N permanent magnets on one side of the Y-axis; the N permanent magnets located on one side of the X-axis have the same magnetic pole direction, and the N permanent magnets symmetrically located on the other side of the X-axis have the same magnetic pole direction, but opposite to the magnetic pole direction of the N permanent magnets on one side of the X-axis.

[0027] The 4N built-in coils are wound in the same direction.

[0028] The present invention also provides a pixel multiplication method for the above-mentioned pixel multiplication device, which is characterized by comprising the following steps:

[0029] 1. Current of the same magnitude and direction is supplied to 4N built-in coils respectively. The resulting 4N electromagnetic fields interact with the magnetic fields of the corresponding 4N permanent magnets. The N permanent magnets on one side of the Y-axis are subjected to an upward force, and the N permanent magnets on the other side of the Y-axis are subjected to a downward force. The N permanent magnets on one side of the X-axis are subjected to an upward force, and the N permanent magnets on the other side of the X-axis are subjected to a downward force. The permanent magnets push the moving parts to twist around the X-torsion axis and the Y-torsion axis in the X+Y+ direction, so that the optical lens moves to the position in the X+Y+ direction and obtains the first deflection position of the optical lens.

[0030] 2】Change the current direction of the 2N built-in coils located on both sides of the Y-axis, while keeping the current magnitude constant. The permanent magnet pushes the moving part to twist around the Y-axis in the Y- direction, while keeping the twist position around the X-axis in the X+ direction unchanged, so that the optical lens moves to the position in the X+Y- direction and obtains the second deflection position of the optical lens.

[0031] 3】Change the current direction of the 2N built-in coils located on both sides of the X-axis, while keeping the current magnitude constant. The permanent magnet pushes the moving part to twist around the X-axis in the X-direction, while keeping the twist position around the Y-axis constant in the Y-direction, so that the optical lens moves to the position in the XY-direction and obtains the third deflection position of the optical lens.

[0032] 4】Change the current direction of the 2N built-in coils located on both sides of the Y-axis, while keeping the current magnitude constant. The permanent magnet pushes the movable part to twist around the Y-axis in the Y+ direction, while keeping the twist position around the X-axis unchanged in the X- direction. This moves the optical lens to the position in the X-Y+ direction, obtaining the fourth deflection position of the optical lens and achieving a fourfold increase in pixels.

[0033] The present invention also provides a pixel multiplication method for the above-mentioned pixel multiplication device, which is characterized by including the following steps:

[0034] 1) The N=2; the eight permanent magnets are the first permanent magnet, the second permanent magnet, the third permanent magnet, the fourth permanent magnet, the fifth permanent magnet, the sixth permanent magnet, the seventh permanent magnet and the eighth permanent magnet; the eight built-in coils are the first built-in coil, the second built-in coil, the third built-in coil, the fourth built-in coil, the fifth built-in coil, the sixth built-in coil, the seventh built-in coil and the eighth built-in coil.

[0035] The first, eighth, fourth, and fifth built-in coils are supplied with currents of the same magnitude and direction. The four electromagnetic fields formed interact with the magnetic fields of the corresponding permanent magnets. The first and eighth permanent magnets are subjected to an upward force, while the fourth and fifth permanent magnets are subjected to a downward force. This pushes the movable part to twist around the X-torsion axis and the Y-torsion axis in the X+Y+ direction, causing the optical lens to move to the position in the X+Y+ direction and obtain the first deflection position of the optical lens.

[0036] 2】Stop energizing the first and fifth built-in coils, and at the same time reduce the current of the eighth and fourth built-in coils to half the current magnitude in step 1, and provide the third and seventh built-in coils with the same current magnitude and direction as the current of the eighth built-in coil (328). The seventh and eighth permanent magnets are subjected to an upward force, and the third and fourth permanent magnets are subjected to a downward force. The moving part twists back to the zero position around the Y-axis in the Y- direction, and the twist position around the X-axis remains unchanged in the X+ direction, so that the optical lens moves to the position in the X+ direction and obtains the second deflection position of the optical lens.

[0037] 3. Stop energizing the fourth and eighth built-in coils, and simultaneously increase the current of the third and seventh built-in coils to twice the current in step 2. Provide the second and sixth built-in coils with a current of the same magnitude but opposite direction as the first built-in coil in step 1. The sixth and seventh permanent magnets are subjected to an upward force, and the second and third permanent magnets are subjected to a downward force, which pushes the movable part to twist around the Y-axis in the Y- direction. The twist position around the X-axis remains unchanged in the X+ direction, so that the optical lens moves to the position in the X+Y- direction and obtains the third deflection position of the optical lens.

[0038] 4. Stop energizing the third and seventh built-in coils, and simultaneously reduce the current of the second and sixth built-in coils to half the current magnitude in step 3. Provide the first and fifth built-in coils with the same current magnitude and direction as the current of the second built-in coil. The fifth and sixth permanent magnets are subjected to an upward force, while the first and second permanent magnets are subjected to a downward force. The moving part twists back to the zero position around the X-axis in the X-direction, and the twist position around the Y-axis remains unchanged in the Y-direction, so that the optical lens moves to the position in the Y-direction and obtains the fourth deflection position of the optical lens.

[0039] 5. Stop energizing the second and sixth built-in coils, and simultaneously increase the current of the first and fifth built-in coils to twice the current in step 4. Provide the fourth and eighth built-in coils with the same current but opposite direction as the fourth built-in coil in step 1. The fourth and fifth permanent magnets are subjected to an upward force, and the first and eighth permanent magnets are subjected to a downward force, which pushes the movable part to twist around the X-axis in the X-direction. The twist position around the Y-axis remains unchanged in the Y-direction, so that the optical lens moves to the position in the XY-direction and obtains the fifth deflection position of the optical lens.

[0040] 6. Stop energizing the first and fifth built-in coils, and simultaneously reduce the current of the fourth and eighth built-in coils to half the current magnitude in step 5. Provide the third and seventh built-in coils with the same current magnitude and direction as the current of the fourth built-in coil. The third and fourth permanent magnets are subjected to an upward force, and the seventh and eighth permanent magnets are subjected to a downward force. The moving part twists back to the zero position around the Y-torsion axis in the Y+ direction, and the torsion position around the X-torsion axis remains unchanged in the X- direction, so that the optical lens moves to the position in the X- direction and obtains the sixth deflection position of the optical lens.

[0041] 7. Stop energizing the fourth and eighth built-in coils, and simultaneously increase the current of the third and seventh built-in coils to twice the current in step 6. Provide the second and sixth built-in coils with the same current in magnitude and direction as the first built-in coil in step 1. The second and third permanent magnets are subjected to an upward force, and the sixth and seventh permanent magnets are subjected to a downward force, which pushes the movable part to twist around the Y-axis in the Y+ direction. The twist position around the X-axis remains unchanged in the X- direction, so that the optical lens moves to the position in the X-Y+ direction, and obtains the seventh deflection position of the optical lens.

[0042] 8. Stop energizing the third and seventh built-in coils, and simultaneously reduce the current in the second and sixth built-in coils to half the current magnitude in step 7. Provide the first and fifth built-in coils with a current of the same magnitude and direction as the current in the second built-in coil. The first and second permanent magnets are subjected to an upward force, while the fifth and sixth permanent magnets are subjected to a downward force. The moving part twists back to the zero position around the X-axis in the X+ direction, and the twist position around the Y-axis remains unchanged in the Y+ direction, so that the optical lens moves to the position in the Y+ direction, thereby obtaining the eighth deflection position of the optical lens and achieving an eightfold increase in pixels.

[0043] The advantages of this invention compared to the prior art are as follows:

[0044] 1. The pixel multiplication device provided by this invention makes the X-axis torsion axis (motion axis) formed by two fixed anchor points and a movable anchor point along the X-axis coincide with the ideal motion axis of the X-axis, and the Y-axis torsion axis formed by two fixed anchor points and a movable anchor point along the Y-axis coincide with the ideal motion axis of the Y-axis. The motion axis formed by the four anchor points is more stable. Compared with the fixed anchor points located at the four corners of the spring, this invention places the fixed anchor points and the movable anchor points on the corresponding torsion axes, which can effectively reduce the influence of asymmetric factors introduced when fixing the spring on the torsion axis, thereby obtaining a stable motion axis. This enables the optical lens to obtain higher deflection position accuracy, realizes pixel multiplication, and greatly improves the imaging effect. At the same time, the pixel multiplication device of this invention has the advantages of compact structure, simple assembly, small size and low cost, which conforms to the development trend of miniaturization and cost reduction of projection systems.

[0045] 2. The pixel multiplication device provided by this invention has two sets of electromagnetic actuators (permanent magnets and built-in coils) arranged on both sides of the X and Y axes, with a total of eight sets of actuators. The driving scheme is more flexible, and it can achieve both four-fold and eight-fold pixel multiplication. When existing pixel multiplication devices achieve eight-fold pixel multiplication, the power supply to the corresponding built-in coil is stopped when switching the deflection position. When the electromagnetic force suddenly disappears, the corresponding permanent magnet will vibrate, resulting in inaccurate deflection position of the optical lens. However, in this invention, because eight sets of actuators are set, in addition to stopping the power supply to the corresponding built-in coil each time the deflection position is switched, some additional coils are also energized. This can effectively suppress the vibration of the corresponding permanent magnet and accurately control the deflection position of the optical lens.

[0046] 3. The pixel multiplication device provided by the present invention measures the real-time temperature of the circuit board by a temperature sensor and adjusts the driving parameters of the built-in coil stored in the memory chip, which can effectively reduce the influence of temperature changes on the movement position of the optical lens.

[0047] 4. Compared with the traditional method of fixing the spring piece with adhesive and movable copper nuts, the present invention adopts a fixing method of fixing the plate copper nut and fastening screw fixed on the circuit board, which makes the assembly more reliable and convenient.

[0048] 5. The pixel multiplication device provided by the present invention has the widths of the first straight beam and the second straight beam set to be equal, which can evenly distribute the stress caused by the fastening screw fixing the anchor point on the two first straight beams and the two second straight beams, reducing the adverse effects caused by uneven stress distribution.

[0049] 6. The pixel multiplication method provided by this invention is simple to operate, flexible in form, and can quickly achieve a pixel multiplication of four or eight times. Attached Figure Description

[0050] Figure 1 This is an exploded view of an embodiment of a pixel multiplication device according to the present invention;

[0051] Figure 2 This is a schematic diagram of an embodiment of the pixel multiplication device of the present invention;

[0052] Figure 3 This is a schematic diagram of the structure of the spring sheet in an embodiment of the pixel multiplication device of the present invention;

[0053] Figure 4 This is a schematic diagram of the circuit board and permanent magnet in an embodiment of the pixel multiplication device of the present invention;

[0054] Figure 5 This is a schematic diagram of the forces acting on the built-in coil-driven permanent magnet in step 1 of the first embodiment of the pixel multiplication method of the present invention;

[0055] Figure 6 This is a schematic diagram illustrating the four-fold pixel multiplication effect of the optical lens in the first embodiment of the pixel multiplication method of the present invention;

[0056] Figure 7 This is a schematic diagram of the movement of the optical lens in the first pixel multiplication method of the present invention;

[0057] Figure 8 This is a schematic diagram of the forces acting on the built-in coil driving the permanent magnet in step 1 of the second pixel multiplication method embodiment of the present invention;

[0058] Figure 9 This is a schematic diagram illustrating the eight-fold pixel multiplication effect of the optical lens in the second pixel multiplication method embodiment of the present invention.

[0059] The specific reference numerals in the attached figures are as follows:

[0060] 1-Spring piece, 11-Moving part, 111-First light-transmitting hole, 121-First fixed anchor point, 122-Second fixed anchor point, 123-Third fixed anchor point, 124-Fourth fixed anchor point, 131-First movable anchor point, 132-Second movable anchor point, 133-Third movable anchor point, 134-Fourth movable anchor point, 141-First arc-shaped beam, 142-First straight beam, 143-First gap, 144-Second gap, 145-Third gap, 146-Fourth gap, 151-Second straight beam, 16-Spring piece positioning hole;

[0061] 2-Optical lenses;

[0062] 3-Circuit board, 31-Second light-transmitting hole, 32-Built-in coil, 321-First built-in coil, 322-Second built-in coil, 323-Third built-in coil, 324-Fourth built-in coil, 325-Fifth built-in coil, 326-Sixth built-in coil, 327-Seventh built-in coil, 328-Eighth built-in coil;

[0063] 4-Permanent magnet, 41-First permanent magnet, 42-Second permanent magnet, 43-Third permanent magnet, 44-Fourth permanent magnet, 45-Fifth permanent magnet, 46-Sixth permanent magnet, 47-Seventh permanent magnet, 48-Eighth permanent magnet;

[0064] 5-Connector; 6-Memory chip; 7-Temperature sensor; 8-Fasting screw; 9-Surface mount copper nut. Detailed Implementation

[0065] To make the advantages and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0066] like Figure 1 , Figure 2 As shown, a pixel multiplication device includes a spring 1, an optical lens 2, a circuit board 3, eight permanent magnets 4, a memory chip 6, and a temperature sensor 7.

[0067] like Figure 3 As shown, the spring 1 includes a movable component 11, four fixed anchor points, four movable anchor points, four first elastic beams, and four second elastic beams. Specifically, the four fixed anchor points include a first fixed anchor point 121, a second fixed anchor point 122, a third fixed anchor point 123, and a fourth fixed anchor point 124; the four movable anchor points include a first movable anchor point 131, a second movable anchor point 132, a third movable anchor point 133, and a fourth movable anchor point 134.

[0068] The first elastic beam includes a first arc-shaped beam 141 and a first straight beam 142 symmetrically connected at both ends of the first arc-shaped beam 141. Two mutually perpendicular axes of symmetry on the surface of the movable member 11 are denoted as the X-axis and Y-axis, respectively. Arc-shaped notches, concentric with the first arc-shaped beam 141, are respectively provided on the outer wall of the movable member 11 at positions corresponding to the X-axis and Y-axis. The first arc-shaped beam 141 is located within the corresponding arc-shaped notch, and a first gap 143 is provided between it and the arc-shaped notch. The center point of the outer wall of the first arc-shaped beam 141 is connected to the center point of the inner wall of the arc-shaped notch through a corresponding movable anchor point. A second gap 144, communicating with the first gap 143, is provided between the first straight beam 142 and the outer wall of the movable member 11.

[0069] The fixed anchor point is an arc shape concentrically arranged with the first arc-shaped beam 141 and located in the arc-shaped recess formed by the first arc-shaped beam 141. A third gap 145 is provided between the outer wall of the fixed anchor point and the inner wall of the first arc-shaped beam 141. The second elastic beam includes a second straight beam 151 symmetrically connected to both ends of the fixed anchor point and located outside the first straight beam 142. A fourth gap 146 communicating with the third gap 145 is provided between the second straight beam 151 and the first straight beam 142, and the ends of the two second straight beams 151 away from the fixed anchor point are respectively connected to the other ends of the corresponding first straight beam 142 by arcs.

[0070] The first fixed anchor point 121, the first movable anchor point 131, the third movable anchor point 133 and the third fixed anchor point 123 are collinear along the X-axis to form an X-torsion axis. The second fixed anchor point 122, the second movable anchor point 132, the fourth movable anchor point 134 and the fourth fixed anchor point 124 are collinear along the Y-axis to form a Y-torsion axis, which is used to make the movable part 11 twist around the X-torsion axis and the Y-torsion axis respectively.

[0071] The first gap 143, the second gap 144, the third gap 145, and the fourth gap 146 should be greater than or equal to the thickness of the spring piece 1. In this invention, the widths of the first straight beam 142 and the second straight beam 151 can be equal or unequal. Preferably, in this embodiment, the widths of the first straight beam 142 and the second straight beam 151 are set to be equal, so that the stress caused by the fastening screw fixing the anchor point can be evenly distributed on the two first straight beams 142 and the two second straight beams 151, reducing the adverse effects of uneven stress distribution. The spring piece 1 is also provided with four spring piece positioning holes 16 for positioning the spring piece 1 during assembly.

[0072] A first light-transmitting hole 111 is provided at the center of the movable component 11. The size of the optical lens 2 is larger than the size of the first light-transmitting hole 111, and it is fixedly installed on the lower surface of the movable component 11, directly opposite the first light-transmitting hole 111. In this embodiment, both the first light-transmitting hole 111 and the optical lens 2 are rectangular.

[0073] like Figure 4As shown, in this embodiment, the number of permanent magnets 4 is preferably set to eight, specifically: a first permanent magnet 41, a second permanent magnet 42, a third permanent magnet 43, a fourth permanent magnet 44, a fifth permanent magnet 45, a sixth permanent magnet 46, a seventh permanent magnet 47, and an eighth permanent magnet 48. Four permanent magnets 4 are symmetrically arranged along the X-axis on the lower surface of the movable part 11, and four permanent magnets 4 are symmetrically arranged along the Y-axis on the lower surface of the movable part 11. Specifically, the first permanent magnet 41 and the second permanent magnet 42 are arranged on one side of the Y-axis, the fifth permanent magnet 45 and the sixth permanent magnet 46 are symmetrically arranged on the other side of the Y-axis, the third permanent magnet 43 and the fourth permanent magnet 44 are arranged on one side of the X-axis, and the seventh permanent magnet 47 and the eighth permanent magnet 48 are symmetrically arranged on the other side of the X-axis. In other embodiments of the present invention, only four permanent magnets 4 may be provided, that is, two permanent magnets 4 are symmetrically arranged along the X-axis on the lower surface of the movable part 11, and the remaining two permanent magnets 4 are symmetrically arranged along the Y-axis on the lower surface of the movable part 11.

[0074] In this embodiment, circuit board 3 is a PCB circuit board. Built-in coils 32 are respectively arranged on circuit board 3 opposite to each permanent magnet 4 to form eight sets of electromagnetic actuators. The electromagnetic actuators located on both sides of the X-axis generate equal and opposite driving forces, and the electromagnetic actuators located on both sides of the Y-axis generate equal and opposite driving forces. Specifically, the built-in coils 32 are formed by routing traces inside the PCB circuit board. In this embodiment, the built-in coils 32 include a first built-in coil 321, a second built-in coil 322, a third built-in coil 323, a fourth built-in coil 324, a fifth built-in coil 325, a sixth built-in coil 326, a seventh built-in coil 327, and an eighth built-in coil 328. The first built-in coil 321, the second built-in coil 322, the third built-in coil 323, the fourth built-in coil 324, the fifth built-in coil 325, the sixth built-in coil 326, the seventh built-in coil 327, and the eighth built-in coil 328 correspond one-to-one with the first permanent magnet 41, the second permanent magnet 42, the third permanent magnet 43, the fourth permanent magnet 44, the fifth permanent magnet 45, the sixth permanent magnet 46, the seventh permanent magnet 47, and the eighth permanent magnet 48 to form eight sets of electromagnetic actuators. Each built-in coil 32 may include one drive coil or two drive coils, i.e., one drive coil drives one permanent magnet 4, or two drive coils jointly drive one permanent magnet 4.

[0075] Preferably, in this embodiment, the magnetic poles of the eight permanent magnets 4 are aligned to facilitate device assembly. Correspondingly, the first built-in coil 321 and the second built-in coil 322, located on one side of the Y-axis, have the same winding direction; the fifth built-in coil 325 and the sixth built-in coil 326, symmetrically located on the other side of the Y-axis, have the same winding direction, but opposite to the winding direction of the first built-in coil 321 and the second built-in coil 322. Similarly, the third built-in coil 323 and the fourth built-in coil 324, located on one side of the X-axis, have the same winding direction; the seventh built-in coil 327 and the eighth built-in coil 328, symmetrically located on the other side of the X-axis, have the same winding direction, but opposite to the winding direction of the third built-in coil 323 and the fourth built-in coil 324.

[0076] In other embodiments of the present invention, the first permanent magnet 41 and the second permanent magnet 42 located on one side of the Y-axis may have the same magnetic pole direction, while the fifth permanent magnet 45 and the sixth permanent magnet 46 located symmetrically on the other side of the Y-axis may have the same magnetic pole direction, but opposite to the magnetic pole direction of the first permanent magnet 41 and the second permanent magnet 42; the third permanent magnet 43 and the fourth permanent magnet 44 located on one side of the X-axis may have the same magnetic pole direction, while the seventh permanent magnet 47 and the eighth permanent magnet 48 located symmetrically on the other side of the X-axis may have the same magnetic pole direction, but opposite to the magnetic pole direction of the third permanent magnet 43 and the fourth permanent magnet 44; correspondingly, the winding direction of the eight built-in coils 32 may be the same.

[0077] A second light-transmitting hole 31 is provided on the circuit board 3, directly opposite the first light-transmitting hole 111. Correspondingly, in this embodiment, the second light-transmitting hole 31 is also rectangular. The spring piece 1 is fixed to the upper surface of the circuit board 3 by a fixing device, which in this embodiment includes four fastening screws 8 and four surface-mount copper nuts 9. Through holes are provided at the four fixing anchor points, and the four surface-mount copper nuts 9 are respectively fixed at the positions corresponding to the four through holes on the upper surface of the circuit board 3. One end of each of the four fastening screws 8 passes through the corresponding through hole and connects to the corresponding surface-mount copper nut 9, fixing the spring piece 1 to the upper surface of the circuit board 3. Simultaneously, the optical lens 2 should be located within the second light-transmitting hole 31. A fifth gap is provided between the outer wall of the optical lens 2 and the side wall of the second light-transmitting hole 31 to prevent the optical lens 2 from colliding with the second light-transmitting hole 31 during movement. Specifically, the fifth gap is greater than or equal to 0.5 mm.

[0078] The memory chip 6 stores the driving parameters of the pixel multiplication device; the temperature sensor 7 measures the real-time temperature of the circuit board 3; the signal output terminals of the memory chip 6 and the temperature sensor 7 are respectively connected to the signal input terminals of the control system, and the voltage or current output terminals of the control system are connected to the input terminals of each built-in coil 32, used to adjust the driving parameters of the built-in coils 32 according to the real-time temperature of the circuit board 3, thereby reducing the influence of temperature changes on the movement position of the optical lens 2. In this embodiment, the output terminals of the control system and the voltage input terminals of each built-in coil 32, and the signal output terminals of the memory chip 6 and the temperature sensor 7 and the signal input terminals of the control system are all connected by connectors 5 for signal communication. In other embodiments of the present invention, signal lines can also be used directly for signal communication.

[0079] Based on the above-mentioned pixel multiplication device, the present invention also provides two pixel multiplication methods.

[0080] The first pixel doubling method specifically includes the following steps:

[0081] 1】For example Figures 5-7 As shown, currents of the same magnitude and direction are supplied to the first built-in coil 321, the second built-in coil 322, the third built-in coil 323, the fourth built-in coil 324, the fifth built-in coil 325, the sixth built-in coil 326, the seventh built-in coil 327, and the eighth built-in coil 328, respectively. The resulting eight electromagnetic fields interact with the magnetic fields of the corresponding first permanent magnet 41, the second permanent magnet 42, the third permanent magnet 43, the fourth permanent magnet 44, the fifth permanent magnet 45, the sixth permanent magnet 46, the seventh permanent magnet 47, and the eighth permanent magnet 48. At this time, the first permanent magnet 41 and the second permanent magnet 42 are subjected to an upward force, and the fifth permanent magnet 45 and the sixth permanent magnet 46 are subjected to a downward force, thereby pushing the movable part 11 to rotate around the Y-axis in the Y+ direction. At the same time, the third permanent magnet 43 and the fourth permanent magnet 44 are subjected to a downward force, and the seventh permanent magnet 47 and the eighth permanent magnet 48 are subjected to an upward force, thereby pushing the movable part 11 to rotate around the X-axis in the X+ direction, so that the optical lens 2 moves to the position in the X+Y+ direction and obtains the first deflection position of the optical lens 2.

[0082] 2】Change the current direction of the first permanent magnet 41, the second permanent magnet 42, the fifth permanent magnet 45, and the sixth permanent magnet 46, while keeping the current magnitude constant; at this time, the first permanent magnet 41 and the second permanent magnet 42 are subjected to a downward force, and the fifth permanent magnet 45 and the sixth permanent magnet 46 are subjected to an upward force, thereby pushing the movable part 11 to rotate around the Y-axis in the Y- direction. At the same time, the third permanent magnet 43 and the fourth permanent magnet 44 are still subjected to a downward force, and the seventh permanent magnet 47 and the eighth permanent magnet 48 are still subjected to an upward force. The rotation position around the X-axis remains unchanged in the X+ direction, so that the optical lens 2 moves to the position in the X+Y- direction, and obtains the second deflection position of the optical lens 2.

[0083] 3】Change the current direction of the third permanent magnet 43, the fourth permanent magnet 44, the seventh permanent magnet 47, and the eighth permanent magnet 48, while keeping the current magnitude constant; at this time, the third permanent magnet 43 and the fourth permanent magnet 44 are subjected to an upward force, and the seventh permanent magnet 47 and the eighth permanent magnet 48 are subjected to a downward force, thereby pushing the movable part 11 to twist around the X-axis in the X-direction. At the same time, the first permanent magnet 41 and the second permanent magnet 42 are still subjected to a downward force, and the fifth permanent magnet 45 and the sixth permanent magnet 46 are still subjected to an upward force. The twisting position around the Y-axis remains unchanged in the Y-direction, so that the optical lens 2 moves to the position in the XY-direction and obtains the third deflection position of the optical lens 2.

[0084] 4) Change the direction of the current in the first permanent magnet 41, the second permanent magnet 42, the fifth permanent magnet 45, and the sixth permanent magnet 46, while keeping the current magnitude constant. At this time, the first and second permanent magnets 41 and 42 are subjected to an upward force, while the fifth and sixth permanent magnets 45 and 46 are subjected to a downward force. This pushes the movable part 11 to twist around the Y-axis in the Y+ direction. Simultaneously, the third and fourth permanent magnets 43 and 44 are still subjected to an upward force, and the seventh and eighth permanent magnets 47 and 48 are still subjected to a downward force. The twisting position around the X-axis remains unchanged in the X- direction, causing the optical lens 2 to move to the X-Y+ position, thus obtaining the fourth deflection position of the optical lens 2. Figure 6 As shown, the optical lens 2 achieves a fourfold increase in pixels by obtaining four deflection positions. Figure 7 In this context, θ represents the deflection angle of optical lens 2, and d represents the offset of the light beam passing through optical lens 2.

[0085] The second pixel doubling method specifically includes the following steps:

[0086] 1】For example Figure 8 , Figure 9As shown, currents of the same magnitude and direction are supplied to the first built-in coil 321, the eighth built-in coil 328, the fourth built-in coil 324, and the fifth built-in coil 325 respectively. The four electromagnetic fields formed interact with the magnetic fields of the corresponding permanent magnets 4. The first permanent magnet 41 and the eighth permanent magnet 48 are subjected to an upward force, while the fourth permanent magnet 44 and the fifth permanent magnet 45 are subjected to a downward force. This pushes the movable part 11 to twist around the X-axis and Y-axis in the X+Y+ direction respectively, so that the optical lens 2 moves to the position in the X+Y+ direction and obtains the first deflection position of the optical lens 2.

[0087] 2. Stop energizing the first built-in coil 321 and the fifth built-in coil 325, and at the same time reduce the current of the eighth built-in coil 328 and the fourth built-in coil 324 to half the current magnitude in step 1. Provide the third built-in coil 323 and the seventh built-in coil 327 with the same current magnitude and direction as the current of the eighth built-in coil 328. The seventh permanent magnet 47 and the eighth permanent magnet 48 are subjected to an upward force, and the third permanent magnet 43 and the fourth permanent magnet 44 are subjected to a downward force. The movable part 11 twists back to the zero position in the Y-direction around the Y-torsion axis, and the torsion position around the X-torsion axis remains unchanged in the X+ direction, so that the optical lens 2 moves to the position in the X+ direction and obtains the second deflection position of the optical lens 2.

[0088] 3. Stop energizing the fourth built-in coil 324 and the eighth built-in coil 328. At the same time, increase the current of the third built-in coil 323 and the seventh built-in coil 327 to twice the current in step 2. Provide the second built-in coil 322 and the sixth built-in coil 326 with a current of the same magnitude but opposite direction as the first built-in coil 321 in step 1. The sixth permanent magnet 46 and the seventh permanent magnet 47 are subjected to an upward force, and the second permanent magnet 42 and the third permanent magnet 43 are subjected to a downward force. This pushes the movable part 11 to twist around the Y-axis in the Y- direction. The twist position around the X-axis remains unchanged in the X+ direction, so that the optical lens 2 moves to the position in the X+Y- direction, and obtains the third deflection position of the optical lens 2.

[0089] 4. Stop energizing the third built-in coil 323 and the seventh built-in coil 327. At the same time, reduce the current of the second built-in coil 322 and the sixth built-in coil 326 to half the current magnitude in step 3. Provide the first built-in coil 321 and the fifth built-in coil 325 with the same current magnitude and direction as the current of the second built-in coil 322. The fifth permanent magnet 45 and the sixth permanent magnet 46 are subjected to an upward force, and the first permanent magnet 41 and the second permanent magnet 42 are subjected to a downward force. The movable part 11 is twisted back to the zero position in the X-direction around the X-torsion axis. The torsion position around the Y-torsion axis remains unchanged in the Y-direction, so that the optical lens 2 moves to the position in the Y-direction and obtains the fourth deflection position of the optical lens 2.

[0090] 5. Stop energizing the second built-in coil 322 and the sixth built-in coil 326. At the same time, increase the current of the first built-in coil 321 and the fifth built-in coil 325 to twice the current in step 4. Provide the fourth built-in coil 324 and the eighth built-in coil 328 with the same current as the fourth built-in coil 324 in step 1 but in the opposite direction. The fourth permanent magnet 44 and the fifth permanent magnet 45 are subjected to an upward force, and the first permanent magnet 41 and the eighth permanent magnet 48 are subjected to a downward force. This pushes the movable part 11 to twist around the X-axis in the X-direction. The twist position around the Y-axis remains unchanged in the Y-direction, so that the optical lens 2 moves to the position in the XY-direction and obtains the fifth deflection position of the optical lens 2.

[0091] 6. Stop energizing the first built-in coil 321 and the fifth built-in coil 325, and at the same time reduce the current of the fourth built-in coil 324 and the eighth built-in coil 328 to half the current magnitude in step 5. Provide the third built-in coil 323 and the seventh built-in coil 327 with the same current magnitude and direction as the current of the fourth built-in coil 324. The third permanent magnet 43 and the fourth permanent magnet 44 are subjected to an upward force, and the seventh permanent magnet 47 and the eighth permanent magnet 48 are subjected to a downward force. The movable part 11 twists back to the zero position around the Y-torsion axis in the Y+ direction, and the torsion position around the X-torsion axis remains unchanged in the X- direction, so that the optical lens 2 moves to the position in the X- direction and obtains the sixth deflection position of the optical lens 2.

[0092] 7. Stop energizing the fourth built-in coil 324 and the eighth built-in coil 328. At the same time, increase the current of the third built-in coil 323 and the seventh built-in coil 327 to twice the current in step 6. Provide the second built-in coil 322 and the sixth built-in coil 326 with the same magnitude and direction as the first built-in coil 321 in step 1. The second permanent magnet 42 and the third permanent magnet 43 are subjected to an upward force, and the sixth permanent magnet 46 and the seventh permanent magnet 47 are subjected to a downward force. This pushes the movable part 11 to twist around the Y-torsion axis in the Y+ direction. The twist position around the X-torsion axis remains unchanged in the X- direction, so that the optical lens 2 moves to the position in the X-Y+ direction, and obtains the seventh deflection position of the optical lens 2.

[0093] 8. Stop energizing the third built-in coil 323 and the seventh built-in coil 327. Simultaneously, reduce the current in the second built-in coil 322 and the sixth built-in coil 326 to half the current magnitude in step 7. Provide the first built-in coil 321 and the fifth built-in coil 325 with a current of the same magnitude and direction as the current in the second built-in coil 322. The first permanent magnet 41 and the second permanent magnet 42 are subjected to an upward force, while the fifth permanent magnet 45 and the sixth permanent magnet 46 are subjected to a downward force. The movable part 11 twists back to its zero position around the X-axis in the X+ direction, while maintaining its twist position around the Y-axis in the Y+ direction. This moves the optical lens 2 to a position in the Y+ direction, obtaining the eighth deflection position of the optical lens 2. Figure 9 As shown, the optical lens 2 achieves an eight-fold pixel multiplication effect by obtaining eight deflection positions.

[0094] It is understood that the above pixel multiplication methods are only two specific embodiments of the present invention. The optical lens 2 can achieve a pixel multiplication effect of four times or eight times by using other deflection sequences, which is also within the protection scope of the present invention.

[0095] The above description is only used to illustrate the technical solutions of the present invention, and is not intended to limit them. For those skilled in the art, modifications can be made to the specific technical solutions described in the above embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions protected by the present invention.

Claims

1. A pixel multiplication device, comprising a circuit board (3), a spring (1), an optical lens (2), and 4N permanent magnets (4), where N = 1 or 2; characterized in that: The spring (1) includes a movable part (11), four fixed anchor points, four movable anchor points, four first elastic beams, and four second elastic beams; The first elastic beam includes a first arc-shaped beam (141) and a first straight beam (142) symmetrically connected to both ends of the first arc-shaped beam (141); the two mutually perpendicular axes of symmetry on the surface of the movable part (11) are respectively denoted as the X-axis and the Y-axis, and the outer side wall of the movable part (11) is provided with arc-shaped notches concentrically arranged with the first arc-shaped beam (141) at the positions corresponding to the X-axis and the Y-axis; the first arc-shaped beam (141) is located in the corresponding arc-shaped notch, and a first gap (143) is provided between it and the arc-shaped notch, and the center point of the outer side wall of the first arc-shaped beam (141) is connected to the center point of the inner side wall of the arc-shaped notch through a corresponding movable anchor point; a second gap (144) communicating with the first gap (143) is provided between the first straight beam (142) and the outer side wall of the movable part (11); The fixed anchor point is an arc shape concentrically set with the first arc beam (141) and located in the arc-shaped recess formed by the first arc beam (141); a third gap (145) is provided between the outer wall of the fixed anchor point and the inner wall of the first arc beam (141); the second elastic beam includes a second straight beam (151) symmetrically connected to both ends of the fixed anchor point and located outside the first straight beam (142); a fourth gap (146) communicating with the third gap (145) is provided between the second straight beam (151) and the first straight beam (142); the ends of the two second straight beams (151) away from the fixed anchor point are respectively connected to the other end of the corresponding first straight beam (142) by an arc; the two fixed anchor points and the movable anchor point set along the X axis form an X torsion axis, and the two fixed anchor points and the movable anchor point set along the Y axis form a Y torsion axis, which are used to make the movable part (11) torsion around the X torsion axis and the Y torsion axis respectively; The movable part (11) has a first light-transmitting hole (111) at its center; the optical lens (2) is larger than the size of the first light-transmitting hole (111) and is fixedly disposed on the lower surface of the movable part (11); 2N permanent magnets (4) are symmetrically disposed on the lower surface of the movable part (11) along the X-axis, and the remaining 2N permanent magnets (4) are symmetrically disposed on the lower surface of the movable part (11) along the Y-axis; The circuit board (3) has a second light-transmitting hole (31) at the position opposite to the first light-transmitting hole (111); the spring sheet (1) is fixed to the upper surface of the circuit board (3) by a fixing device, the optical lens (2) is located in the second light-transmitting hole (31) and a fifth gap is provided between it and the side wall of the second light-transmitting hole (31); 4N built-in coils (32) are provided on the circuit board (3) at the position opposite to each permanent magnet (4) to form 4N sets of electromagnetic actuators. The electromagnetic actuators located on both sides of the X-axis form driving forces of equal magnitude and opposite direction, and the electromagnetic actuators located on both sides of the Y-axis form driving forces of equal magnitude and opposite direction.

2. The pixel multiplication device according to claim 1, characterized in that: The first gap (143), the second gap (144), the third gap (145), and the fourth gap (146) are greater than or equal to the thickness of the spring sheet (1); The fifth gap is greater than or equal to 0.5 mm; Each built-in coil (32) includes one or two drive coils.

3. The pixel multiplication device according to claim 2, characterized in that: It also includes a memory chip (6), a temperature sensor (7), and a control system; The storage chip (6) is used to store the driving parameters of the pixel multiplication device; The temperature sensor (7) is used to measure the real-time temperature of the circuit board (3); The signal output terminals of the storage chip (6) and the temperature sensor (7) are respectively connected to the signal input terminals of the control system. The voltage or current output terminal of the control system is connected to the input terminal of each built-in coil (32) to adjust the driving parameters of the built-in coil (32) according to the real-time temperature of the circuit board (3).

4. The pixel multiplication device according to claim 3, characterized in that: The fixing device includes four fastening screws (8) and four patch copper nuts (9); Each of the four fixed anchor points has a through hole; The four patch copper nuts (9) are respectively fixedly installed on the upper surface of the circuit board (3) at the positions corresponding to the four through holes; One end of each of the four fastening screws (8) passes through a corresponding through hole and is connected to a corresponding patch copper nut (9).

5. The pixel multiplication device according to claim 4, characterized in that: The widths of the first straight beam (142) and the second straight beam (151) are equal.

6. The pixel multiplication device according to claim 5, characterized in that: The spring piece (1) is also provided with four spring piece positioning holes (16) for positioning the spring piece (1) during the assembly process.

7. The pixel multiplication device according to any one of claims 1-6, characterized in that: The magnetic poles of the 4N permanent magnets (4) are aligned. The N built-in coils (32) located on one side of the Y-axis have the same winding direction, and the N built-in coils (32) symmetrically located on the other side of the Y-axis have the same winding direction, but opposite to the winding direction of the N built-in coils (32) on one side of the Y-axis; the N built-in coils (32) located on one side of the X-axis have the same winding direction, and the N built-in coils (32) symmetrically located on the other side of the X-axis have the same winding direction, but opposite to the winding direction of the N built-in coils (32) on one side of the X-axis.

8. The pixel multiplication device according to any one of claims 1-6, characterized in that: The N permanent magnets (4) located on one side of the Y-axis have the same magnetic pole direction, and the N permanent magnets (4) symmetrically located on the other side of the Y-axis have the same magnetic pole direction, but opposite to the magnetic pole direction of the N permanent magnets (4) on one side of the Y-axis; the N permanent magnets (4) located on one side of the X-axis have the same magnetic pole direction, and the N permanent magnets (4) symmetrically located on the other side of the X-axis have the same magnetic pole direction, but opposite to the magnetic pole direction of the N permanent magnets (4) on one side of the X-axis; The 4N built-in coils (32) are wound in the same direction.

9. A pixel multiplication method based on the pixel multiplication device according to any one of claims 1-8, characterized in that, Includes the following steps: 1】Provide currents of the same magnitude and direction to 4N built-in coils (32) respectively. The resulting 4N electromagnetic fields interact with the magnetic fields of the corresponding 4N permanent magnets (4). The N permanent magnets (4) on one side of the Y-axis are subjected to an upward force, and the N permanent magnets (4) on the other side of the Y-axis are subjected to a downward force. The N permanent magnets (4) on one side of the X-axis are subjected to an upward force, and the N permanent magnets (4) on the other side of the X-axis are subjected to a downward force. The permanent magnets (4) push the movable part (11) to twist around the X-torsion axis and the Y-torsion axis in the X+Y+ direction, so that the optical lens (2) moves to the position in the X+Y+ direction and obtains the first deflection position of the optical lens (2). 2】Change the current direction of the 2N built-in coils (32) located on both sides of the Y axis, while keeping the current magnitude constant. The permanent magnet (4) pushes the movable part (11) to twist around the Y-axis in the Y- direction. The twist position around the X-axis remains unchanged in the X+ direction, so that the optical lens (2) moves to the position in the X+Y- direction and obtains the second deflection position of the optical lens (2). 3】Change the current direction of the 2N built-in coils (32) located on both sides of the X-axis, while keeping the current magnitude constant. The permanent magnet (4) pushes the movable part (11) to twist around the X-axis in the X-direction. The twist position around the Y-axis remains unchanged in the Y-direction, so that the optical lens (2) moves to the position in the XY-direction and obtains the third deflection position of the optical lens (2). 4】Change the current direction of the 2N built-in coils (32) located on both sides of the Y axis, while keeping the current magnitude unchanged, so that the permanent magnet (4) pushes the movable part (11) to twist around the Y-axis in the Y+ direction, and the twist position around the X-axis remains unchanged in the X- direction, so that the optical lens (2) moves to the position in the X-Y+ direction, and obtains the fourth deflection position of the optical lens (2), thereby achieving a fourfold increase in pixels.

10. A pixel multiplication method based on the pixel multiplication device according to any one of claims 1-8, characterized in that, Includes the following steps: 1) The N=2; The eight permanent magnets (4) are the first permanent magnet (41), the second permanent magnet (42), the third permanent magnet (43), the fourth permanent magnet (44), the fifth permanent magnet (45), the sixth permanent magnet (46), the seventh permanent magnet (47), and the eighth permanent magnet (48); the eight built-in coils (32) are the first built-in coil (321), the second built-in coil (322), the third built-in coil (323), the fourth built-in coil (324), the fifth built-in coil (325), the sixth built-in coil (326), the seventh built-in coil (327), and the eighth built-in coil (328). The first built-in coil (321), the eighth built-in coil (328), the fourth built-in coil (324), and the fifth built-in coil (325) are supplied with currents of the same magnitude and direction. The four electromagnetic fields formed interact with the magnetic fields of the corresponding permanent magnets (4). The first permanent magnet (41) and the eighth permanent magnet (48) are subjected to an upward force, and the fourth permanent magnet (44) and the fifth permanent magnet (45) are subjected to a downward force. This pushes the movable part (11) to twist around the X torsion axis and the Y torsion axis in the X+Y+ direction, respectively, so that the optical lens (2) moves to the position in the X+Y+ direction and obtains the first deflection position of the optical lens (2). 2】Stop energizing the first built-in coil (321) and the fifth built-in coil (325), and at the same time reduce the current of the eighth built-in coil (328) and the fourth built-in coil (324) to half the current magnitude in step 1, and provide the third built-in coil (323) and the seventh built-in coil (327) with the same current magnitude and direction as the current of the eighth built-in coil (328). The seventh permanent magnet (47) and the eighth permanent magnet (48) are subjected to an upward force, and the third permanent magnet (43) and the fourth permanent magnet (44) are subjected to a downward force. The movable part (11) twists back to the zero position in the Y-direction around the Y-torsion axis, and the torsion position around the X-torsion axis remains unchanged in the X+ direction, so that the optical lens (2) moves to the position in the X+ direction and obtains the second deflection position of the optical lens (2). 3】Stop energizing the fourth built-in coil (324) and the eighth built-in coil (328), while increasing the current of the third built-in coil (323) and the seventh built-in coil (327) to twice the current in step 2, and providing the second built-in coil (322) and the sixth built-in coil (326) with the same current as the first built-in coil (321) in step 1 but in the opposite direction. The sixth permanent magnet (46) and the seventh permanent magnet (47) are subjected to an upward force, and the second permanent magnet (42) and the third permanent magnet (43) are subjected to a downward force, pushing the movable part (11) to twist around the Y-axis in the Y- direction, while keeping the twist position around the X-axis unchanged in the X+ direction, so that the optical lens (2) moves to the position in the X+Y- direction, and obtains the third deflection position of the optical lens (2); 4. Stop energizing the third built-in coil (323) and the seventh built-in coil (327), and at the same time reduce the current of the second built-in coil (322) and the sixth built-in coil (326) to half the current magnitude in step 3, and provide the first built-in coil (321) and the fifth built-in coil (325) with the same current magnitude and direction as the current of the second built-in coil (322). The fifth permanent magnet (45) and the sixth permanent magnet (46) are subjected to an upward force, and the first permanent magnet (41) and the second permanent magnet (42) are subjected to a downward force. The movable part (11) is twisted back to the zero position in the X-direction around the X-torsion axis, and the twist position in the Y-direction around the Y-torsion axis remains unchanged in the Y-direction, so that the optical lens (2) moves to the position in the Y-direction and obtains the fourth deflection position of the optical lens (2).

5. Stop energizing the second built-in coil (322) and the sixth built-in coil (326), and at the same time increase the current of the first built-in coil (321) and the fifth built-in coil (325) to twice the current in step 4. Provide the fourth built-in coil (324) and the eighth built-in coil (328) with the same current as the fourth built-in coil (324) in step 1 but in the opposite direction. The fourth permanent magnet (44) and the fifth permanent magnet (45) are subjected to an upward force, and the first permanent magnet (41) and the eighth permanent magnet (48) are subjected to a downward force. This pushes the movable part (11) to twist around the X-axis in the X-direction, while keeping the twist position around the Y-axis unchanged in the Y-direction. This moves the optical lens (2) to the position in the XY-direction, thus obtaining the fifth deflection position of the optical lens (2). 6】Stop energizing the first built-in coil (321) and the fifth built-in coil (325), and at the same time reduce the current of the fourth built-in coil (324) and the eighth built-in coil (328) to half the current magnitude in step 5, and provide the third built-in coil (323) and the seventh built-in coil (327) with the same current magnitude and direction as the current of the fourth built-in coil (324). The third permanent magnet (43) and the fourth permanent magnet (44) are subjected to an upward force, and the seventh permanent magnet (47) and the eighth permanent magnet (48) are subjected to a downward force. The movable part (11) is twisted back to the zero position in the Y+ direction around the Y torsion axis, and the torsion position around the X torsion axis remains unchanged in the X- direction, so that the optical lens (2) moves to the position in the X- direction and obtains the sixth deflection position of the optical lens (2). 7】Stop energizing the fourth built-in coil (324) and the eighth built-in coil (328), while increasing the current of the third built-in coil (323) and the seventh built-in coil (327) to twice the current in step 6, and providing the second built-in coil (322) and the sixth built-in coil (326) with the same magnitude and direction as the first built-in coil (321) in step 1. The second permanent magnet (42) and the third permanent magnet (43) are subjected to an upward force, and the sixth permanent magnet (46) and the seventh permanent magnet (47) are subjected to a downward force, pushing the movable part (11) to twist around the Y-torsion axis in the Y+ direction, while keeping the twist position around the X-torsion axis unchanged in the X- direction, so that the optical lens (2) moves to the position in the X-Y+ direction, and obtains the seventh deflection position of the optical lens (2); 8. Stop energizing the third built-in coil (323) and the seventh built-in coil (327), and at the same time reduce the current of the second built-in coil (322) and the sixth built-in coil (326) to half the current magnitude in step 7, and provide the first built-in coil (321) and the fifth built-in coil (325) with the same current magnitude and direction as the current of the second built-in coil (322). The first permanent magnet (41) and the second permanent magnet (42) are subjected to an upward force, and the fifth permanent magnet (45) and the sixth permanent magnet (46) are subjected to a downward force. The movable part (11) is twisted back to the zero position in the X-direction of the torsion axis and the torsion position in the Y-direction remains unchanged in the Y-direction, so that the optical lens (2) moves to the position in the Y-direction and obtains the eighth deflection position of the optical lens (2), thereby achieving an eight-fold increase in pixels.

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