TWM602213U - Ultra-miniature projection optical actuator - Google Patents

Abstract

An ultra-miniature projection optical actuator. A metal-punched suspension shrapnel is mounted on a base. The suspension shrapnel carries an optical lens, and a magnetic component is arranged on the periphery of the optical lens. The magnetic component A magnetic field can be formed after electrification, and electromagnetic signals are used to attract the suspended shrapnel, so that the suspended shrapnel rotates in a specific direction with the virtual axis as the axis; it is not only smaller in size, but also has excellent elasticity and can save costs. , Especially suitable for the use of projector equipment.

Description

Ultra-miniature projection optical actuator

This creation is about an ultra-miniature projection optical actuator, especially an optical actuator suitable for projection equipment. It is generally a magnetically movable single-axis and dual-axis swing design that can make the actuator The swing of the projector is more stable and accurate, and the resolution and stability of the projection are greatly improved.

More advanced optical projection systems are not only required to be compact in size, but also have better projection resolution and lower costs. Under these three prerequisites, the current more advanced single-axis optical projection system design, please refer to As shown in Figures 11 and 12, the image of the microchip panel 92 (for example: DMD) is projected onto the projection screen (not shown in the figure) through the squeeze 91, the actuator 80, and the lens 90; where the projection light travels The middle will pass through the lens in the actuator 80, and will vibrate rapidly (change the projection position) through the actuator 80, and increase the resolution by continuously changing the position of the image.

However, a common structure of the conventional actuator 80, as shown in Figures 13, 14 and 15, has a base 81, and a square assembly slot 801 is provided in the center of the base 81, and the assembly slot 801 is opposite to each other. There is a bearing 82 and a rotating shaft 83 in each position; a swinging member 84 is provided between the two rotating shafts 83; the swinging member 84 is composed of a carrier 841 and a lens 842, so when the actuator is on the receiving side Under the electromagnetic action (not shown in the figure), the oscillating member 84 can be driven to use the axis L1 between the two bearings 82 and the rotating shaft 83 as the baseline, so that the two sides of the oscillating member 84 can swing up and down regularly to Change the position of the projection, this is the most commonly used method.

The structural shortcoming of the optical actuator 80 of the conventional projection device is that the bearing 82 and the rotating shaft 83 are used as the fulcrum, but there is a gap between the bearing 82 and the rotating shaft 83, so when it swings up and down on both sides quickly, the fulcrum itself The position will jump up and down due to the gap, or the shaft 83 will have an axial offset in the bearing 82, which makes the position of the light projected change from time to time due to the gap and axial displacement, resulting in unpredictable errors. Instability is the main disadvantage of conventional use.

Secondly, the conventional bearing 82 is installed on the base 81 of the actuator 80, and the volume cannot be reduced or thinned. This limits the volume of the product, and the production cost is high. At the same time, maintenance and replacement after wear , Both require higher costs.

Moreover, these structures are still two-point swings with a single axis L1 as the baseline. If you want to improve the resolution, you must design a multi-point moving light point to increase the resolution of the projection. When the optical actuator improves the swing of multiple light spots, in addition to the ingenuity of the structure, when the volume needs to be reduced, the accuracy and stability of the multi-point moving light spots still need to be maintained. This is technically in the past. There are difficulties, and the industry has been eager to make breakthroughs.

In order to solve the above-mentioned problems, the applicant has developed extremely advanced dual-axis optical projection system designs, such as Taiwan patents I656373, M574245, M587280, and mainland China patent applications No. 201810210272.2, 201821564171.7, 201921010585.X, etc., but in structural design The above all belong to another type of design that is different from the single-axis structure. If there is a single-axis or dual-axis on the product, completely different components must be used. The cost of manufacturing and mold opening needs to be doubled. Single-axis and dual-axis combined with most of the structural design, only need to change the number of suspension springs to match the corresponding number of magnetic components, can be used in single-axis or dual-axis rotating occasions, the manufacturing cost can be large The width is reduced, the maintenance cost and the difficulty of replacing parts must also be reduced, and a major breakthrough has been achieved.

The main purpose of this creation is to design a universal base for uniaxial and biaxial. A single or biaxial suspension shrapnel is mounted on the base. The suspension shrapnel also carries an optical lens and optical There is a magnetic component on the peripheral side of the lens. The magnetic component can form a magnetic field after being energized. The electromagnetic signal attracts the suspended shrapnel so that the suspended shrapnel rotates repeatedly in a specific direction with the virtual axis as the axis; because of this creation The base, coil, optical lens, magnetic component, and protective cover are all the same, while the suspension shrapnel only has two or four elastic parts. With two or four magnetic components, it can be completely changed into a single axis or The dual-axis mode, the structure is streamlined and does not take up space, and the swing is more precise and durable, saving mold opening costs and maintenance costs; not only reduces the size of parts, but also saves mold opening costs. It is especially suitable for mass production. use.

In order to achieve the above objectives, the first embodiment of this case is achieved in the following ways:

Set up a base with several locking feet at the corners, and a light-transmitting hole in the center. The light-transmitting hole is roughly square in shape with the shape of the optical lens, and at the four corners of the edge of the light-transmitting hole, respectively A cushion block is arranged opposite each other, and a post is arranged above the cushion block; a suspension spring sheet, which is stamped from a metal sheet, includes a central frame body, and an opposite corner of the central frame body Each is provided with an elastic part, the elastic part has a fixing part, the fixing part is provided with a socket, and a first elastic line and a second elastic line are arranged on both sides of the fixing part, and the first elastic part The other ends of the first elastic line and the second elastic line are connected with the central frame, and the first elastic line and the second elastic line are formed with at least a section of bending part; and the suspending elastic piece is in the insertion hole on the second elastic part A virtual axis is formed between, and the first elastic line (and the bending part) and the second elastic line (and the bending part) are exactly the virtual axis The lines are bisected and symmetrical with each other; at least one set of two opposite coils are respectively arranged on the two opposite end edges of the light-transmitting hole of the base; an optical lens is provided with a magnetic component on each of two opposite sides, the magnetic component having A magnetic conductive plate, on the outer side of the magnetic conductive plate, a first magnet and a second magnet arranged up and down are arranged, so that the magnetic conductive plate, the first magnet, and the second magnet form a magnetic force ring, and the magnetic conductive plate The side is joined with an optical lens; the optical lens is fixed on the upper surface of the central frame of the suspension shrapnel, and the suspension shrapnel is sleeved on the insert post of the base with the insertion hole of the fixing part, so that the suspension shrapnel Carrying the optical lens, the magnetic component is erected on the cushion block of the base. The two magnetic components can form a magnetic field after being energized, and attract the suspended shrapnel by electromagnetic signals, so that the suspended shrapnel is centered on the virtual axis. Rotate repeatedly to both sides.

The second embodiment of this case is achieved in the following way:

A base with locking feet at the corners, and a light transmission hole in the center. The light transmission hole matches the shape of the optical lens to form roughly a square, and at the four corners of the light transmission hole, two pairs A spacer block is provided opposite each other, and a post is provided above the spacer block; a suspension spring sheet, which is stamped from a metal sheet, includes a central frame body, and each opposite corner of the central frame body An elastic part is provided, the elastic part has a fixing part, the fixing part is provided with a socket, and a first elastic line and a second elastic line are respectively provided on both sides of the fixing part, and the first elastic The other ends of the wire and the second elastic line are connected with the central frame, and the first elastic line and the second elastic line are formed with at least one bending part; and the suspension elastic piece is formed between the sockets on the two elastic parts A virtual axis, and the first elastic line (and the bending part) and the second elastic line (and the bending part) are exactly bisected by the virtual axis and symmetrical to each other; at least one set of two opposite coils are respectively arranged on the base Two opposite end edges of the light-transmitting hole; an optical lens with a magnetic component on each of the two opposite sides, the magnetic component having a magnetic conductive plate, on the outer side of the magnetic conductive plate is arranged up and down The first magnet and the second magnet make the permeable plate, the first magnet, and the second magnet form a magnetic loop, and the inner surface of the permeable plate is connected to a The optical lens is joined together; the optical lens is fixed to the upper surface of the central frame of the suspension shrapnel, and the suspension shrapnel is sleeved on the post of the base with the socket of the fixing part, so that the suspension shrapnel carries the optical lens , The magnetic component is erected on the cushion block of the base; the four magnetic components can form a magnetic field after being energized, and the suspension shrapnel is attracted by the electromagnetic signal, so that the suspension shrapnel faces the two virtual axis as the axis. The angle of the direction is rotated repeatedly.

[This creation]

10: Pedestal

11: light hole

12: Locking feet

13: spacer

14: Insert post

15: bearing

16: trunking

20: Suspended shrapnel

20’: Suspended shrapnel

200: central frame

20A: Elastic part

20L: bisect the virtual axis

20L’: bisect the virtual axis

21: Fixed part

22: jack

23: The first elastic line

231: Bending part

24: second elastic line

241: Bending part

30: coil

31: Coil

32: Coil

33: Coil

40: Optical lens

50: Magnetic component

51: The first magnet

52: second magnet

53: Permeable plate

60: cover

61: middle hole

62: buckle

63: buckle

64: buckle

70: circuit board

Lx: virtual axis

Ly: virtual axis

M1: rotational torque

M2: rotational torque

M3: rotational torque

M4: Rotation torque

[Traditional]

80: Actuator

801: assembly slot

81: Pedestal

82: Bearing

83: shaft

84: swing parts

841: Stage

842: lens

90: lens

91: Secret

92: microchip panel

L1: axis

Figure 1 is an external view of the three-dimensional structure of this creation with a single-axis rotation as an embodiment.

Figure 2 is an exploded view of the three-dimensional structure of this creation with a single-axis rotation as an embodiment.

Figure 3 is a plan view of the suspension shrapnel of this creation with a single-axis rotation as an example.

Figure 4 is a three-dimensional structural diagram of the suspension shrapnel of this creation with a single-axis rotation as an example.

Figure 5 is a longitudinal cross-sectional view of this creation with a single-axis rotation as an embodiment.

Figure 6 is a three-dimensional structure combination diagram of this creation with dual-axis rotation as an embodiment.

Figure 7 is an exploded view of the three-dimensional structure of this creation taking the double-axis rotation as an embodiment.

Figure 8 is a plan view of the suspended shrapnel of this creation with dual-axis rotation as an example.

Figure 9 is a three-dimensional structural diagram of the suspension shrapnel of this creation with dual-axis rotation as an example.

Figure 10 is a longitudinal cross-sectional view of this creation with biaxial rotation as an embodiment.

Figure 11 is a schematic diagram 1 illustrating the application of conventional optical actuators.

Figure 12 is a schematic diagram 2 of the application description of conventional optical actuators.

Figure 13 is a three-dimensional structure diagram of a conventional uniaxial optical actuator.

Figure 14 is a plan view of Figure 13.

Fig. 15 is a sectional view taken along A-A of Fig. 14.

Please refer to Figures 1, 2 and 3, which are the three-dimensional structure combination diagram and exploded diagram of the first embodiment of this creation; it can be seen that this creation includes at least:

A base 10 is provided with a number of locking feet 12 at the corners, which is convenient to be fixed on the projector tool (not shown in the figure) with the fasteners (such as screws, screws, rivets, clamps, etc.); A light-transmitting hole 11 is provided in the center, and the shape of the light-transmitting hole 11 is square in cooperation with the optical lens 40. At the four corners of the edge of the light-transmitting hole 11, a spacer 13 is provided opposite each other. A post 14 is provided above the cushion block 13; a protruding socket 15 is provided between the two cushion blocks 13 at the edge of the light-transmitting hole 11, and the top of the socket 15 forms an arc shape that is easy to support Slot; the base 10 is provided with a wire slot 16 below, so that the base 10 is connected to the circuit board 70 by means of a connecting wire passing through the wire slot 16.

Please refer to Figures 3 and 4, a suspension spring 20 is stamped from a metal sheet and includes a central frame 200. The preferred embodiment of the central frame 21 is a square with rounded corners; An elastic portion 20A is provided on an opposite corner of the square central frame 21. The elastic portion 20A has a fixing portion 21, and the fixing portion 21 is provided with a socket 22, and the fixing portion 21 A first elastic line 23 and a second elastic line 24 are provided on both sides, and one end of the first elastic line 23 and the second elastic line 24 opposite to the fixing portion 21 is connected to the central frame 200, and the At least one bending part 231, 241 is formed on a spring line 23 and a second spring line 24; in detail, a preferred embodiment of the bending part 231, 241 is the middle section of the first spring line 23 and the second spring line 24 The positions are all provided with a spring structure that is bent more than three times in a row, and the suspension elastic piece 20 forms a virtual axis 20L between the insertion holes 22 on the two elastic parts 20A, and the first elastic line 23 (and the bending part 231 ) And the second elastic line 24 (and the bending portion 241) are exactly bisected by the virtual axis 20L and are symmetrical to each other.

Please refer to Figures 2 and 3, at least one set of two opposite coils 30, 31 are respectively arranged on the two opposite end edges of the light-transmitting hole 11 of the base 10, and can be arranged on the two sockets of the base 10. On the top of the 15 arc groove, and more stable.

Please refer to Figures 1, 2, 3, and 5, an optical lens 40 is provided with a magnetic component 50 on at least one of its opposite sides. The magnetic component 50 has a magnetic conductive plate 53, on which the magnetic conductive plate 53 A first magnet 51 and a second magnet 52 are arranged on the outer side of the upper and lower sides, so that the permeable plate 53, the first magnet 51, and the second magnet 52 form a magnetic ring, and the inner surface of the permeable plate 53 is connected to a The optical lens 40 is joined (for example, glued); the optical lens 40 is adhered to the upper surface of the central frame 200 of the suspension spring 20, and the suspension spring 20 is sleeved on the base 10 with the insertion hole 22 of the fixing part 21 On the post 14 of the base 10, the suspended elastic sheet 20 carries the optical lens 40 and the magnetic component 50 and is erected on the cushion block 13 of the base 10.

Please refer to Figures 1, 2 and 5, a protective cover 60 has a middle hole 61, and a plurality of buckle edges 62, 63, 64 are respectively provided on the side, which can be fastened on the base 10.

For the use of this creation, please refer to Figures 1, 2, and 3. The suspension spring 20 carries the optical lens 40, and the two fixing parts 21 are sleeved on the post 14 of the base 10 to make the suspension The hanging shrapnel 20 forms a virtual axis L _X between the two inserting posts 14; when the two opposite coils 30 and 31 are energized, it can attract or repel the two sides of the hanging shrapnel 20, which is just The suspension shrapnel 20 carrying the optical lens 40 takes the virtual axis L _{X as the} axis to form clockwise or counterclockwise rotation moments M1, M2. Because the elastic parts 20A on both sides of the suspension shrapnel 20 have the first elastic force that accumulates energy The line 23 and the second elastic line 24 have continuous rebounding force. Therefore, when the coils 30, 31 and the magnetic component 50 are continuously and repeatedly attracted or repelled, the suspended elastic sheet 20 can carry the optical lens 40 along the virtual axis L _X is the axis and rotates clockwise and counterclockwise repeatedly, which can drive the optical lens 40 to repeatedly and rapidly deviate on the plane of the base 10 to improve the quality of projected pixels and improve the projection effect.

The following is the second embodiment of this creation, which is used on a two-axis rotating optical actuator. Please refer to Figures 6, 7, and 8. The structure of the base 10 is exactly the same as that described above. That is to say, there are several locking feet 12 at the corners, which are convenient to be fixed to the projector tool (not shown in the figure) with the fasteners (such as screws, screws, rivets, clamps, etc.); the base 10 is also provided with a transparent lens in the center. Light hole 11, the shape of the light hole 11 in conjunction with the optical lens 40 is a square, and at the four corners of the edge of the light hole 11, a spacer 13 is arranged opposite to each other, and the spacer 13 A post 14 is provided on each; a protruding seat 15 is provided between the two cushion blocks 13 at the edge of the light-transmitting hole 11, and the top of the seat 15 forms an arc-shaped groove that is easy to support; 10 is provided with a wire slot 16 below, so that the base 10 is connected to a circuit board (not shown in the figure) by a connecting wire passing through the wire slot 16.

Please refer to Figures 8 and 9, a suspension spring 20, which is stamped from a metal sheet, includes a central frame 200. A preferred embodiment of the central frame 21 is a square with rounded corners; The two opposite corners of the square central frame 21 are each provided with an elastic portion 20A. The elastic portion 20A has a fixing portion 21. The fixing portion 21 is provided with a socket 22, and on the fixing portion 21 A first elastic line 23 and a second elastic line 24 are provided on both sides, and the other end of the first elastic line 23 and the second elastic line 24 opposite to the fixing portion 21 is connected to the central frame 200, and the The first elastic line 23 and the second elastic line 24 are formed with at least a section of bending parts 231, 241; in detail, the preferred embodiment of the bending parts 231, 241 is that of the first elastic line 23 and the second elastic line 24 The middle section is provided with a spring structure that is bent more than three times in a row, and the suspension elastic pieces 20 form a virtual axis 20L, 20L' between the sockets 22 on each of the two opposite elastic parts 20A, and The first elastic line 23 (and the bending portion 231) and the second elastic line 24 (and the bending portion 241) belong to exactly They are bisected by the two virtual axes 20L and are symmetrical to each other.

Please refer to Figures 7 and 8, two sets of four coils 30, 31, 32, 33 facing each other in pairs are respectively arranged on the two sets of opposite end edges of the light-transmitting hole 11 of the base 10. The top arc grooves of the two bearing seats 15 on the base 10 are more stable.

Please refer to Figures 7, 8, and 10. The optical lens 40 has exactly the same structure as described above, but the magnetic component 50 is set in two groups and a total of four, that is, the optical lens 40 is provided on each of the four sides. There is a magnetic component 50, the magnetic component 50 has a magnetic conductive plate 53, on the outer side of the magnetic conductive plate 53 is provided with a first magnet 51 and a second magnet 52 arranged up and down, so that the magnetic conductive plate 53, the first The magnet 51 and the second magnet 52 form a magnetic ring, and the inner surface of the magnetic conductive plate 53 is joined with an optical lens 40 (for example, glued); the optical lens 40 is adhered to the central frame 200 of the suspension spring 20 On the upper surface, the suspension shrapnel 20 is sleeved on the post 14 of the base 10 with the insertion hole 22 of the fixing part 21, so that the suspension shrapnel 20 carries the optical lens 40 and the magnetic component 50 is erected on the cushion of the base 10 Block 13 on.

Please refer to Figures 6, 8, and 10, the protective cover 60 has exactly the same structure as described above. The protective cover 60 has a middle hole 61, and a plurality of buckles 62, 63, 64 are provided on the sides. , Can be fastened on the base 10.

For the use of the second embodiment of this creation, please refer to Figures 6, 7, and 8. The suspension spring 20 carries an optical lens 40, and the four corner fixing parts 21 are respectively sleeved on the base 10 to face each other. The suspending shrapnel 20 is located between the two sets of opposite coils 30, 31, 32, 33, each forming a virtual axis L _X and a virtual axis L _Y ; when two opposite four coils 30, 31 , 32, 33 when the current is applied in sequence, the four sides of the suspension shrapnel 20 can be adsorbed or repelled in sequence (as shown by the arrow), which can precisely remove the suspension shrapnel carrying the optical lens 40 20. Take the two virtual axis L _X and the virtual axis L _{Y as the} axes respectively, forming clockwise or counterclockwise rotation moments M1, M2, M3, M4 for forward and reverse rotation. Because the elastic parts 20A on the four sides of the suspension spring 20 have accumulated The first elastic force line 23 and the second elastic force line 24 of energy have continuous rebound force, so when the four coils 30, 31, 32, 33 and the magnetic component 50 are continuously and repeatedly attracted or repelled, the suspension can be made The shrapnel 20 carries the optical lens 40 to repeatedly rotate clockwise and counterclockwise with the two virtual axis L _X and the virtual axis L _{Y as the} axis, which can drive the optical lens 40 to perform different axes on the plane of the base 10 Repeated and rapid deflection can improve the quality of excellent projection pixels, and the projection effect is the best.

This creation has the following advantages in use:

1. The base, coil, optical lens, magnetic component, and protective cover of this creative design are all the same, while the suspension shrapnel only has two or four elastic parts. It can be completely combined with two or four magnetic components. Changing to a single-axis or dual-axis mode, the structure is streamlined and does not occupy space, and the swing is more precise and durable, saving mold opening costs and maintenance costs, which are the main advantages of this creation.

2. The combination of the suspension shrapnel and magnetic components of this creation can be more easily accommodated in the base, so the volume of the entire optical actuator can be minimized, and it is especially suitable for use on ultra-miniature projection equipment, resulting in cost Reducing and not taking up space is another advantage of this creation.

However, the above-mentioned structure is only a preferred embodiment of this creation, and is not used to limit the scope of implementation of this creation; therefore, if you are familiar with this technique and make equivalent or easy changes, you should not depart from this creation. Equal changes and modifications made under the spirit and scope, such as the use of material and size changes, or the subtle deformation of suspended shrapnel, but the characteristics are still the same, If it is still the feature of this creation, it should all be included in the feature of this creation.

10: Pedestal

12: Locking feet

13: spacer

14: Insert post

15: bearing

16: trunking

20: Suspended shrapnel

30: coil

31: Coil

40: Optical lens

50: Magnetic component

60: cover

63: buckle

64: buckle

70: circuit board

Claims (10)

An ultra-miniature projection optical actuator, which includes at least: A base with locking feet at the corners, and a light-transmitting hole in the center. The light-transmitting hole matches the optical lens in a square shape, and the four corners of the light-transmitting hole are opposite each other. A cushion block is provided on the ground, and a post is provided above the cushion block; A suspension elastic piece, which is stamped from a metal sheet, includes a central frame body, an upper corner of the central frame body is provided with an elastic part, the elastic part has a fixed part, the fixed part is provided with A socket, and a first elastic line and a second elastic line are respectively provided on both sides of the fixing part, and the end of the first elastic line and the second elastic line opposite to the fixing part is connected with the central frame, And the first elastic line and the second elastic line are formed with at least a section of bending part; and the suspension elastic piece forms a virtual axis between the insertion holes on the two elastic parts, and the first elastic line and the bending part and the second The elastic line and the bending part are equally divided by the virtual axis and symmetrical to each other; At least one set of two opposite coils are respectively arranged on two opposite end edges of the light-transmitting hole of the base; An optical lens is provided with a magnetic component on two opposite sides. The magnetic component has a magnetic conductive plate. On the outer side of the magnetic conductive plate, a first magnet and a second magnet are arranged up and down, so that The magnetic conductive plate, the first magnet, and the second magnet form a magnetic ring, and the inner surface of the magnetic conductive plate is joined with an optical lens; the optical lens is fixed to the upper surface of the central frame of the suspended elastic sheet and is suspended The shrapnel is sleeved on the inserting post of the base with the socket of the fixed part, so that the suspended shrapnel carries the optical lens and the magnetic component is erected on the cushion block of the base; After the magnetic component is energized, a magnetic force field can be formed, and the suspension shrapnel is attracted by electromagnetic signals, so that the suspension shrapnel rotates repeatedly in two directions with the virtual axis as the axis. The ultra-miniature projection optical actuator according to claim 1, wherein the base is provided with a protruding seat between two pads on the edge of the light-transmitting hole, and the top of the seat is formed to be easily supported Curved slot. The ultra-micro projection optical actuator according to claim 1, wherein the base is provided with a wire groove below, and the base is connected to the circuit board by a connecting wire passing through the wire groove. The ultra-miniature projection optical actuator according to claim 1, wherein the bending parts of the first elastic line and the second elastic line of the suspension elastic sheet are a spring structure that is bent three times in succession. The ultra-miniature projection optical actuator according to claim 1, wherein a protective cover is provided above the base of the suspension spring sheet, the protective cover has a central hole, and a plurality of buckles are respectively provided on the side. An ultra-miniature projection optical actuator, which includes at least: A base with locking feet at the corners, and a light transmission hole in the center. The light transmission hole matches the shape of the optical lens to form roughly a square, and at the four corners of the light transmission hole, two pairs A cushion block is provided opposite to each other, and a post is provided above the cushion block; A suspension spring sheet is stamped from a metal sheet and includes a central frame. The two opposite corners of the central frame are each provided with an elastic part. The elastic part has a fixed part, and the fixed part is provided with an elastic part. There is a socket, and a first elastic line and a second elastic line are respectively provided on both sides of the fixed part, and the end of the first elastic line and the second elastic line opposite to the fixed part is connected with the central frame , And the first elastic force line and the second elastic force line are formed with at least a section of bending part; the suspension elastic piece forms a virtual axis between the sockets on each of the two opposite elastic parts, and the corresponding The first elastic line and the second elastic line are bisected by the two virtual axes and are symmetrical to each other; Two sets of four coils facing each other in pairs are respectively arranged on the two sets of opposite end edges of the light-transmitting hole of the base; An optical lens with a magnetic component on each of the four sides. The magnetic component has a magnetic conductive plate. On the outer side of the magnetic conductive plate, a first magnet and a second magnet arranged up and down are arranged to make the magnetic The plate, the first magnet, and the second magnet form a magnetic ring, and the inner side of the magnetic plate is joined with an optical lens; the optical lens is fixed on the upper surface of the central frame of the suspension spring, and The suspension shrapnel is sleeved on the inserting post of the base with the socket of the fixed part, so that the suspension shrapnel carries the optical lens and the magnetic component is erected on the cushion block of the base; After the four magnetic components are energized, a magnetic field can be formed, and the suspension shrapnel is attracted by electromagnetic signals, so that the suspension shrapnel is rotated around two imaginary axes, and rotates in two directions in turns. The ultra-micro projection optical actuator according to claim 6, wherein the base is further provided with a protruding seat between the two pads on the edge of the light-transmitting hole, and the top of the seat is formed to be easy to support Arc groove. The ultra-micro projection optical actuator according to claim 6, wherein the base is provided with a wire groove below, and the base is connected to the circuit board by a connecting wire passing through the wire groove. The ultra-miniature projection optical actuator according to claim 6, wherein the bending parts of the first elastic line and the second elastic line of the suspension elastic sheet are a spring structure that is bent three times in succession. The ultra-micro projection optical actuator according to claim 6, wherein a protective cover is provided above the base of the suspension spring sheet, the protective cover has a middle hole, and a plurality of buckles are respectively provided on the side.

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