TWM641717U - Projection Optical Actuator - Google Patents

Abstract

A kind of projective optical actuator, a pedestal is worn with a circuit board to form a base with a power signal, and both the base and the circuit board are provided with a light-transmitting hole in the center, and the circuit board is placed in the light-transmitting hole Each of the four sides is embedded with a circuit magnetic unit; another suspension shrapnel is set up above the circuit board. The suspension shrapnel carries an optical lens in the center, and elastic members are provided at the four corners, and a magnetic unit is provided on each of the four sides. , when the circuit magnetic unit and the magnetic component are continuously and repeatedly attracted or repelled, the suspension shrapnel can carry the optical lens, and perform different axial and repeated rapid deflections on the plane of the base, which can further improve the excellent performance. The quality of the projection pixels improves the projection effect; and because the cover is locked above the suspension shrapnel, the overall structure is stronger.

Description

Projection Optical Actuator

This creation is about a projection optical actuator, especially an optical actuator suitable for projection equipment. It is generally a magnetic two-axis swing design, which can make the swing of the actuator more stable and accurate. , and greatly improve the resolution and stability of projection.

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

Yet a kind of common structure of conventional actuator 80, as shown in the 13th, 14th, 15th figure, system has a base 81, and is provided with a square assembly groove 801 in the center of base 81, and the opposite of this assembly groove 801 A bearing 82 and a rotating shaft 83 are respectively provided at the position; a swinging part 84 is then arranged between the two rotating shafts 83; Under the action of electromagnetic force (not shown in the figure), the swinging member 84 can be driven to take the axis L1 between the two bearings 82 and the rotating shaft 83 as the baseline, so that both sides of the swinging member 84 can swing up and down regularly to change the position of the projection. is the most commonly used method.

The structural disadvantages of the optical actuator 80 of this conventional projection device have been fully explained by the inventor in Taiwan Patent Application No. 105135962 (that is, U.S. Patent Application No. 15/415891 and Mainland Patent No. 201611099292.4), and will not be repeated here. However, these structures still belong to the two-point swing with a single axis L1 as the baseline. If you want to improve the resolution, you must design a multi-point moving light spot to improve the resolution of the projection. When the optical actuator improves the swing of multiple light spots, in addition to the ingenuity of the structure, it is necessary to maintain the accuracy and stability of the multi-point moving light spots. At the same time, it is lighter in size and easier to assemble or maintain. Technically, there have been difficulties in the past, and this is where the industry has been desperately trying to break through and improve.

The main purpose of this creation is to design an optical actuator structure for a two-axis projection device; the ingenious changes in the mutual matching of the structure can not only simplify the parts and reduce the size, but also save the cost of mold opening, especially suitable for mass production. It has the advantage of precise projection when used on projectors.

In order to achieve the above-mentioned purpose, the first embodiment of the present case is achieved by the following methods: a base is provided, a light-transmitting hole is provided in the center, and a lock post is respectively provided at the four corners of the light-transmitting hole, and A fixing hole is arranged on the base plate; a circuit board is provided with a middle hole in the center, and a guide hole, a fixing hole and a connecting hole are respectively arranged on the periphery of the middle hole, which are respectively connected with the light-transmitting hole, the locking column, and the fixing hole of the base. The holes are aligned, and the lock column of the base passes through the guide hole of the circuit board, so that the circuit board frame is stacked above the base; four circuit magnetic units are embedded around the middle hole of the circuit board; four sets of magnetic force The components are relatively arranged directly above the four circuit magnetic units; an optical lens is directly opposite to the light-transmitting hole of the base and the middle hole of the circuit board; Contains a central square hole, and the suspension shrapnel extends a protruding piece from each of the four long sides of the central square hole, and in the middle An elastic member extends outward from the four corners of the central square hole, and the elastic member connects with the two adjacent protruding pieces with a support portion, and the support portion is formed with two elastic force bending lines on both sides, and the two elastic force The ends of the bending lines meet again to form a handle; the suspension shrapnel is sucked by the magnetic component with the protruding piece, and is matched with the four circuit magnetic units; and the optical lens is fixed on the suspension The central square hole of the shrapnel; the four locking components pass through the handle of the hanging shrapnel and the guide hole of the circuit board respectively, and are locked on the lock column of the base; thereby, when the four circuit magnetic units and When the magnetic component is continuously and repeatedly attracted or repelled, the suspension shrapnel can carry the optical lens, and perform different axial and repeated rapid deflections on the plane of the base, which can further improve the quality of the excellent projection pixels , to improve the projection effect.

Another purpose of this creation is to provide the aforementioned protective cover with two preferred embodiments on the locking parts of the four corners. One is to form a concave arc structure to accommodate the locking components (such as: screws) diameter; another embodiment is that the locking part of the protective cover is directly formed as an annular fastener for the locking component to pass through and be locked and pressed against, which is very convenient to use.

Another purpose of this creation is to add a protective cover on the top of the hanging shrapnel. The protective cover is preferably made of metal, and a middle hole is provided in the center, and a lock is provided at each of the four corners of the protective cover. The solid part is used for four locking components to be inserted and locked, which can achieve the effect of protecting parts and preventing dust.

[this creation]

10: base

11: light hole

12: lock column

13: Fixing hole

20: circuit board

21: middle hole

22: Guide hole

23: Fixing and connection holes

241: Circuit magnetic unit

242: Circuit Magnetic Unit

243: Circuit magnetic unit

244: Circuit magnetic unit

30: Connector

40:Magnetic component

41: magnet

42: Yoke piece

50: optical lens

60: Suspension shrapnel

61: central square hole

62A: tab

62B: tab

62C: tab

62D: tab

63: Elastic member

631: support part

632: elastic bending line

633: elastic bending line

634: handle

635: perforation

70: cover

70A: Cover

701: middle hole

71: Protective wings

72: Protective wings

73: Protective wings

74: Protective wings

75: Dispensing hole

76: Locking part

76A: Locking part

77: Locking component

Lx: virtual axis

Ly: virtual axis

M1: rotation moment

M2: Rotational moment

M3: Rotational moment

M4: Rotational moment

〔usual〕

80: Actuator

801: assembly slot

81: base

82: Bearing

83: Shaft

84: Oscillating piece

841: carrier

842: Lens

90: Lens

91: 稜鏡

92: microchip panel

L1: axis

Fig. 1 is the appearance diagram of the three-dimensional combination of this creation.

Figure 2 is an exploded view of the three-dimensional structure of this creation with the protective cover pulled out.

Figure 3 is an exploded view of the main structure of this creation looking up.

Figure 4 is an exploded view of the structure of this creation.

Fig. 5 is the structural view of Fig. 1 turned over.

Fig. 6 is the structural diagram of another angle of this creation protective cover.

Fig. 7 is another kind of embodiment diagram of this creation protection cover.

Fig. 8 is the plane structure diagram of this creative suspension shrapnel.

Fig. 9 is the structural diagram of this creation taking the section line aa as the section.

Fig. 10 is the structural diagram of this creation taking the bb section line as the section.

FIG. 11 is a schematic diagram 1 illustrating the application of a conventional optical actuator.

FIG. 12 is a schematic diagram 2 illustrating the application of a conventional optical actuator.

Fig. 13 is a three-dimensional structure diagram of a conventional single-axis optical actuator.

Fig. 14 is the plan view of Fig. 13.

Fig. 15 is the A-A sectional view of Fig. 14.

Please refer to Figures 1, 2, 3, 4, and 5, which are the combination diagram of this creation and the disassembly diagram of related parts; it can be seen that this creation at least includes:

A base 10 is provided with a light-transmitting hole 11 in the center, and a lock post 12 is respectively provided at four corners of the light-transmitting hole 11 , and a fixing hole 13 is provided on the board surface of the base 10 .

A circuit board 20 is provided with a middle hole 21 in the center, and a guide hole 22, a fixing and connecting hole 23 are respectively arranged on the periphery of the middle hole 21, and are just connected with the light-transmitting hole 11, the locking post 12, and the fixing hole 13 of the base 10 respectively. Alignment, and make the lock column 12 of the base 10 pass through the guide hole 22 of the circuit board 20, so that the circuit board 20 is stacked on the top of the base 10, and the circuit board 20 is further provided with a connector 30 if necessary; Four circuit magnetic force units 241,243,242,244 are further provided around the middle hole 21 of the circuit board 20, and the four circuit magnetic force units 241, 243, 242, 244 can be packaged and embedded around the middle hole of the circuit board, or welded around the middle hole 21 of the circuit board 20 with electromagnetic coils (not shown in the figure), so that the magnetic force can be evenly distributed.

Four groups of magnetic components 40 are oppositely located on the four circuit magnetic units 241, 243, 242, 244 on the circuit board 20, and the magnetic components 40 are composed of a magnet 41 and a yoke sheet 42; an optical lens 50 is positive For the transparent hole 11 of the base 10 and the middle hole 21 of the circuit board 20 .

Please refer to shown in Fig. 3, 4, 8, a suspending shrapnel 60 is a metal sheet punched or etched into a frame body, including a central square hole 61, and the suspending shrapnel 60 is placed on the four lengths of the central square hole 61. A protruding piece 62A, 62B, 62C, 62D is extended from each side, and an elastic member 63 is extended outward from the four corners of the central square hole 61. The pieces 62A, 62B, 62C, and 62D are connected, and two elastic bending lines 632 , 633 are formed on two sides of the support portion 631 , and the ends of the two elastic bending lines 632 , 633 meet to form a handle 634 with a perforation 635 .

Please refer to Fig. 3, 4, 9, and 10, the suspension elastic piece 60 uses the protruding piece 62A, 62B, 62C, 62D for the yoke piece 42 and the magnet 41 of the magnetic force component 40 to be adsorbed and coupled to the Four circuit magnetic units 241, 243, 242, 244; and the optical lens 50 is bonded below the central square hole 61 of the suspension elastic piece 60 (as shown in FIG. 3 and FIG. 4 ).

Please refer to Fig. 1, 2, 4, 6, and 9, a protective cover 70 is provided with a middle hole 701 in the center, and a protective wing 71, 72, 73, 74 is respectively bent on the four sides, and at least A relative protective wing 73,74 is provided with a dispensing hole 75, which is used for dispensing and fixing between related components; in addition, four corners of the protective cover 70 are respectively provided with a locking portion 76; please refer to Fig. 1, As shown in 2, 3, 4, 8, and 9, four locking components 77 (for example: screws) respectively pass through the locking portion 76 of the protective cover 70, the hanging The handle 634 of the hanging elastic piece 60 and the guide hole 22 of the circuit board 20 are locked on the lock post 12 of the base 10 .

In use of this creation, please refer to Figs. 1, 2, 3, 4, and 8, the center of the suspension shrapnel 60 carries the optical lens 50, and each group of tabs 62A, 62B, 62C, and 62D on the four sides is provided with a magnetic force Assembly 40, and the four corners of the handle 634 are respectively combined with the lock post 12 on the base 10, so that the suspension elastic piece 60 is erected on the top of the base 10 and the circuit board 20, and the suspension elastic piece 60 is on two opposite sides. Between the circuit magnetic force units 241, 243, 242, 244, a virtual axis L _X and a virtual axis _LY are formed respectively; The positions of the protruding pieces 62A, 62B, 62C, and 62D, that is, to generate adsorption or repulsion to the magnetic component 40 in sequence (as shown by the arrows), can just separate the suspension shrapnel 60 carrying the optical lens 50 with two virtual axes. L _X and the imaginary axis L _Y are axes, forming forward and reverse clockwise or counterclockwise rotational moments M1, M2, M3, M4, because each corner of the suspension shrapnel 60 is provided with an elastic member 63, which has accumulated The two elastic force bending lines 632,633 of energy can have the power of continuous rebound, so when the two groups of four circuit magnetic units 241,243,242,244 and the magnetic component 40 are continuously and repeatedly attracted or repelled, the suspension shrapnel 60 can carry the optical lens 50 , repeatedly rotate clockwise and counterclockwise with the two imaginary axis L _X and the imaginary axis _LY as axes, so when the four circuit magnetic units 241, 243, 242, 244 and the magnetic component 40 are continuously and repeatedly attracted or repelled, the The suspending shrapnel 60 can carry the optical lens 50 to perform repeated and rapid deflection in different axial directions on the plane of the base 10, which can further improve the quality of excellent projection pixels and improve the projection effect to the best.

Please refer to the protective cover 70 in Fig. 4 and Fig. 6, the preferred embodiment of the locking portion 76 at the four corners is a concave arc structure to accommodate the locking components 77 (for example: screws, bolts, screws, but another embodiment, as shown in FIG. 7 , the locking portion 76A of the cover 70A is an annular fastener for the locking assembly 77 shown in FIG. 4 to pass through. The locking press is a simple change member.

This creation is equipped with an ingenious base, circuit board, suspension shrapnel, circuit magnetic unit, and magnetic components to form two axial swings. The structure is simplified and does not take up space, and the swing is more accurate and durable. The main advantages; secondly, embedding the circuit magnetic unit directly in the circuit board saves space and can reduce the overall thickness of the projection optical actuator. Combined with the design of the cover, the magnetic force is better and the structure is stronger , is another advantage.

Under the design of this creation, the cover can still be combined with different structures, so that the entire structure can better match the existing equipment and have higher compatibility.

However, the structure described above is only a preferred embodiment of this creation, and is not used to limit the scope of implementation of this creation; Equal changes and modifications made under the spirit and scope, such as changes in the use of materials and sizes, or slight deformation of the suspension shrapnel or the shape of the cover, but the features are still the same, are still the characteristics of this creation, and should be covered Within the characteristics of this creation.

10: base

12: lock column

20: circuit board

22: Guide hole

23: Fixing and connection holes

30: Connector

50: optical lens

70: cover

77: Locking component

Lx: virtual axis

Ly: virtual axis

M1: rotation moment

M2: Rotational moment

M3: Rotational moment

M4: Rotational moment

Claims (9)

A projection optical actuator at least includes: A base is provided with a light-transmitting hole in the center, and a lock post is provided at each of the four corners of the light-transmitting hole, and a fixing hole is provided on the base plate; A circuit board is provided with a middle hole in the center, and a guide hole, a fixing hole, and a connecting hole are respectively arranged around the middle hole, which are respectively matched with the light-transmitting hole, the locking post, and the fixing hole of the base, and make the lock of the base The post passes through the guide hole of the circuit board, so that the circuit board frame is stacked on the top of the base; Four circuit magnetic units are arranged around the middle hole of the circuit board; four sets of magnetic components are arranged directly above the four circuit magnetic units; An optical lens is facing the light transmission hole of the base and the middle hole of the circuit board; A suspension shrapnel is a frame shaped body stamped from a metal sheet, including a central square hole, and the suspension shrapnel extends a protruding piece from each of the four long sides of the central square hole, and a protrusion is formed on the four sides of the central square hole. There is an elastic member extending outward from the corner position, and the elastic member connects with the two adjacent protruding pieces with a supporting part, and two elastic bending lines are formed on the two sides of the supporting part, and the ends of the two elastic bending lines meet again form a handle; The suspension shrapnel is sucked by the magnetic component with the protruding piece, and matched with the four circuit magnetic units; and the optical lens is fixed at the central square hole of the suspension shrapnel; The four locking components respectively pass through the support handle of the suspension shrapnel and the guide hole of the circuit board, and are locked on the lock column of the base. As for the projection optical actuator described in item 1 of the scope of the patent application, a connector is further provided on the circuit board. As for the projection optical actuator described in item 1 of the scope of the patent application, the magnetic component is composed of a magnet and a yoke iron sheet. For the projection optical actuator described in item 1 of the scope of the patent application, the locking component is one of screws, bolts, screws, and pins. For the projection optical actuator described in item 1 of the scope of patent application, a protective cover is further provided on the top of the suspension shrapnel. Locking Department. As for the projection optical actuator described in item 5 of the scope of the patent application, the protective cover is respectively bent with a protective wing on the four sides, and a fixing hole is provided on the protective wing. For the projection optical actuator described in item 5 of the scope of the patent application, the locking part of the cover is one of a concave arc structure and a ring fastener. For the projection optical actuator described in item 1 of the scope of the patent application, the four circuit magnetic units are packaged and embedded around the middle hole of the circuit board. For the projection optical actuator described in item 1 of the scope of the patent application, the four circuit magnetic units are welded around the middle hole of the circuit board with electromagnetic coils.

Images