Prism lens integrated drive device

Abstract

The present invention discloses a prism lens integrated driving device, which includes a base, a first carrier, a second carrier, a first driving mechanism, a second driving mechanism and a third driving mechanism. The first carrier and the second carrier are arranged on the base. The first driving mechanism and the second driving mechanism drive the first carrier to move in different directions, and the third driving mechanism drives the second carrier to move along the optical axis direction of the lens. The first carrier and the base are provided with a first base combined capacitance structure and a second base combined capacitance structure. The first base combined capacitance structure includes a first electrode plate induction member arranged in the first carrier and a first electrode plate arranged on the base. The second base combined capacitance structure includes a second electrode plate induction member arranged in the first carrier and a second electrode plate arranged on the base. The displacements of the first carrier in different directions are detected through the first base combined capacitance structure and the second base combined capacitance structure. The present invention can improve the product reliability, reduce the product cost and increase the service life of the product.

Description

Technical Field

[0001] The present invention relates to the field of optical driving, and particularly to a prism lens integrated driving device. Background Art

[0002] The periscope lens structure generally includes two parts, namely a lens part and a prism part. The prism part is arranged at the front end of the periscope part, and an imaging chip is arranged at the rear end of the lens part. Light is reflected by the prism part and enters the lens part. In the prior art, the lens part and the prism part are two independent devices, and the production process is complex. In addition, most of the current prism driving devices perform position detection through sensors. Summary of the Invention

[0003] The purpose of the present invention is to provide a prism lens integrated driving device to solve the problems existing in the above-mentioned prior art.

[0004] To solve the above problems, according to one aspect of the present invention, a prism lens integrated driving device is provided. The prism lens integrated driving device includes a base, a first carrier, a second carrier, a first driving mechanism, a second driving mechanism, and a third driving mechanism. The first carrier and the second carrier are respectively used to mount a prism and a lens and are arranged on the base. The first driving mechanism and the second driving mechanism drive the first carrier to move in different directions, and the third driving mechanism drives the second carrier to move along the optical axis direction of the lens, wherein

[0005] The first carrier and the base are provided with a first base capacitance structure and a second base capacitance structure. The first base capacitance structure includes a first electrode sheet inductor arranged in the first carrier and a first electrode sheet arranged on the base. The second base capacitance structure includes a second electrode sheet inductor arranged in the first carrier and a second electrode sheet arranged on the base. The displacement of the first carrier in different directions is detected by the cooperation of the first electrode sheet and the first electrode sheet inductor and by the cooperation of the second electrode sheet and the second electrode sheet inductor.

[0006] In one embodiment, the first driving mechanism and the first base capacitance structure are respectively arranged on both sides of the first carrier, and the second driving mechanism and the second base capacitance structure are arranged at the bottom of the first carrier.

[0007] In one embodiment, the first driving mechanism includes a first driving magnet arranged on the first side of the first carrier and a first coil arranged on the first side of the base. The second driving mechanism includes a second coil arranged on the base and a second driving magnet arranged at the bottom of the first carrier. The second electrode sheet is arranged above the second coil.

[0008] In one embodiment, the base is successively provided with a first chamber and a second chamber along the optical axis direction of the lens. The first carrier is disposed in the first chamber, and the second carrier is disposed in the second chamber. First avoidance grooves and second avoidance grooves are respectively provided on two opposite side plates of the first chamber, and a third avoidance groove is provided at the bottom of the first chamber. Among them, the first electrode sheet is arranged in the first coil avoidance groove, the first coil is arranged in the second avoidance groove, and the second coil is arranged in the third avoidance groove; optionally, the second electrode sheet is disposed above the second coil and is disposed in the third avoidance groove together with the second coil.

[0009] In one embodiment, the prism lens integrated driving device further includes a flexible circuit board. The flexible circuit board is arranged on the outer walls and the bottom of two opposite side plates of the base and includes opposite first side circuit boards, second side circuit boards, and a bottom circuit board. Among them, the bottom circuit board cooperates with the third avoidance groove, the first coil is arranged on the inner wall of the second side circuit board and is arranged in the second coil avoidance groove, the first electrode sheet is arranged on the inner wall of the first side circuit board and is arranged in the first avoidance groove, and the second coil is arranged on the bottom circuit board and is arranged in the third avoidance groove; optionally, the second electrode sheet is disposed above the second coil and is connected to the inner wall of the bottom circuit board at both ends.

[0010] In one embodiment, the first carrier is provided with an internal metal. The internal metal includes a bottom and first internal metal side portions and second internal metal side portions that extend upward from both sides of the bottom. The top end of the first internal metal side portion integrally extends downward the first electrode sheet inductor. After the first carrier is installed in the first chamber, the first electrode sheet inductor and the first electrode sheet are correspondingly arranged and a gap is formed between the two.

[0011] In one embodiment, a first end plate is provided at one end of the base close to the first carrier. An installation protrusion integrally extends from the inner wall of the first end plate, and an installation groove is provided on the side portion of the first carrier close to the first end plate. The installation protrusion extends into the installation groove. Among them, contact bumps are provided in the installation groove, and a flexible member is provided at the end of the installation protrusion. The flexible member abuts against the contact bumps and forms a movement fulcrum when the first carrier moves in different directions.

[0012] In one embodiment, the integrated driving device of the prism lens further includes a shrapnel. The shrapnel is arranged on the inner surface of the first end plate and forms an avoidance opening at the position of the mounting protrusion. The periphery of the avoidance opening is fixedly connected to the end face of the first carrier, and both ends of the shrapnel are fixedly connected to the inner wall of the first end plate. Optionally, the end face of the first carrier close to the first end plate is provided with a shrapnel mounting protrusion, and the periphery of the avoidance opening of the shrapnel is fixedly connected to the mounting protrusion.

[0013] In one embodiment, one end of the flexible circuit board is connected to one end of the shrapnel, and the built-in metal of the first carrier is connected to the other end of the shrapnel, so that the flexible circuit board is electrically connected to the first electrode plate induction plate and the second electrode plate induction plate through the shrapnel.

[0014] In one embodiment, anti-collision flexible members are provided at the top ends of the first carrier and the second carrier, and / or damping glue is provided between the outer wall of the first carrier and the inner wall of the base.

[0015] The present invention detects the position of the prism movement through the base combined capacitance structure, which can simplify the circuit structure, improve the product reliability, further reduce the product cost, and increase the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the integrated driving device of the prism lens according to an embodiment of the present invention.

[0017] Figure 2 is another exploded perspective view of the integrated driving device of the prism lens according to an embodiment of the present invention.

[0018] Figure 3 is another exploded perspective view of the integrated driving device of the prism lens according to an embodiment of the present invention.

[0019] Figure 4 is a perspective view of the first carrier and the second carrier according to an embodiment of the present invention.

[0020] Figure 5 is a perspective view of the built-in metal member of the first carrier and the built-in metal member of the second carrier according to an embodiment of the present invention.

[0021] Figure 6 is another perspective view of the built-in metal member of the first carrier and the built-in metal member of the second carrier according to an embodiment of the present invention.

[0022] Figure 7 is the front view of the integrated driving device of the prism lens according to an embodiment of the present invention.

[0023] Figure 8 isFigure 7 A cross-sectional view of the integrated prism and lens driving device in

[0024] Figure 9 is Figure 7 A cross-sectional view of the integrated prism and lens driving device in

[0025] Figure 10 is Figure 7 A cross-sectional view of the integrated prism and lens driving device in Detailed implementation manners

[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so as to more clearly understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not limitations on the scope of the present invention, but only to illustrate the essential spirit of the technical solution of the present invention.

[0027] In the following description, for the purpose of illustrating various disclosed embodiments, certain specific details are set forth to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments can be practiced without one or more of these specific details. In other instances, well-known devices, structures and techniques associated with the present application may not be shown or described in detail so as not to unnecessarily obscure the description of the embodiments.

[0028] References to "one embodiment" or "an embodiment" in the entire specification mean that the particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Additionally, the particular features, structures or characteristics may be combined in any manner in one or more embodiments.

[0029] In the following description, in order to clearly show the structure and working mode of the present invention, many directional terms will be used for description. However, words such as "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as limiting terms.

[0030] The present invention relates to an integrated prism and lens driving device, which integrates a prism and a lens on one product. Specifically, the prism and the lens are integrated onto a base, which can drive the prism and the lens to move, and change the propagation direction of light through the prism part and achieve the optical image stabilization function, and achieve the optical zoom function through the lens part. The integrated prism and lens driving device can be used on devices such as mobile phones, tablet computers, laptop computers, etc. to achieve the functions of autofocus and optical image stabilization.

[0031] Reference Figures 1-9 As shown in Figures 1-9 , the integrated prism lens driving device 100 according to an embodiment of the present invention includes a base 10, a first carrier 20 (also referred to as a prism driving carrier), a second carrier 30 (also referred to as a lens driving carrier), a first driving mechanism (also referred to as a nodding driving mechanism), a second driving mechanism (also referred to as a shaking driving mechanism), and a third driving mechanism (also referred to as an AF driving mechanism). The first carrier and the second carrier are mounted on the base 10 and are respectively used to mount a prism and a lens. The first driving mechanism and the second driving mechanism drive the first carrier to move in different directions to achieve an optical image stabilization function, and the third driving mechanism drives the second carrier to move along the optical axis direction of the lens to achieve an optical zoom function. A first base capacitance structure and a second base capacitance structure are provided between the first carrier 20 and the base 10, and the displacement of the first carrier in different directions is detected through the first base capacitance structure and the second base capacitance structure. Among them, the first base capacitance structure includes a first electrode piece inductor 71 provided on the first carrier 20 and a first electrode piece 72 provided on the base, and the second base capacitance structure includes a second electrode piece inductor 81 provided on the first carrier and a second electrode piece 82 provided on the base. The displacement of the first carrier 20 in different directions is detected by the cooperation of the first electrode piece 72 and the first electrode piece inductor 71 and by the cooperation of the second electrode piece and the second electrode piece inductor 81. That is to say, the base capacitance structure is used as a position sensor to detect the position of the prism in different directions. By detecting the position of the prism movement through the base capacitance structure, the circuit structure can be simplified, the product reliability can be improved, and at the same time, the product cost can be further reduced and the service life of the product can be increased.

[0032] In one embodiment, the first driving mechanism and the first base capacitance structure are respectively arranged on both sides of the first carrier 20. That is to say, one side of the first carrier 20 symmetric about the optical axis direction of the lens is provided with the first driving mechanism, and the other side is provided with the first base capacitance structure. The first base capacitance structure and the first driving mechanism are arranged symmetrically about the optical axis direction of the lens substantially. The second driving mechanism and the second base capacitance structure are arranged at the bottom of the first carrier 20.

[0033] Specifically, the first driving mechanism includes a first driving magnet 42 provided on one side of the first carrier 10 and a first driving coil 41 provided on one side of the base. The second driving mechanism includes a second driving coil 51 provided at the bottom of the base 10 and a second driving magnet 52 provided at the bottom of the first carrier.

[0034] Optionally, as Figure 2As shown, the base 10 is successively provided with a first chamber 11 and a second chamber 12 along the optical axis direction of the lens. The first carrier 20 is disposed in the first chamber 11, and the second carrier 30 is disposed in the second chamber 12. First avoidance grooves 13 and 14 are respectively provided on two opposite side plates of the first chamber 11, and a third avoidance groove 15 is provided at the bottom of the first chamber 11. The first electrode sheet 72 is arranged in the first avoidance groove 13, the first coil 41 is arranged in the second avoidance groove 14, and the second coil 51 is arranged in the third avoidance groove 15. Optionally, the second electrode sheet 82 is disposed above the second coil 51 and is arranged in the third avoidance groove 15 together with the second coil 51.

[0035] In one embodiment, the prism lens integrated driving device 100 further includes a flexible circuit board 90. The flexible circuit board 90 is arranged on the outer walls and the bottom of two opposite side plates of the base 10 and includes opposite first side circuit boards 91, second side circuit boards 92, and a bottom circuit board 93. Optionally, the bottom circuit board 93 corresponds to and cooperates with the third avoidance groove 15 on the base 10 and has substantially the same width. The first coil 41 is provided on the second side circuit board 92 of the flexible circuit board 90 and is arranged in the second avoidance groove 14 of the base 10. The first electrode sheet 72 is provided on the first side circuit board 91 of the flexible circuit board and is arranged in the first avoidance groove 13 of the base. The second coil 51 is provided on the inner wall of the bottom circuit board 93 and is arranged in the third avoidance groove 15 of the base.

[0036] Optionally, the bottom circuit board 93 is further provided with a second electrode sheet 82. The second electrode sheet 82 is disposed above the second coil 51 and is connected to the bottom circuit board 93 at both ends. That is to say, the middle part of the second electrode sheet 82 protrudes upward to form a space for accommodating the second coil 51 at the bottom.

[0037] In one embodiment, the first carrier 20 is provided with a first built-in metal 21 inside the first carrier. The first built-in metal 21 forms a substantially U-shaped structure and includes a bottom 213, a first built-in metal side 211 and a second built-in metal side 212 extending upward from both sides of the bottom 213. The first built-in metal side 211 is disposed on one side of the first carrier 20 corresponding to the first avoidance groove 13 of the base 10, and the second built-in metal side 212 is disposed on one side of the first carrier 20 corresponding to the second avoidance groove 14 of the base 10. The top end of the first built-in metal side 211 integrally extends downward to form a first electrode piece inductor 71. After the first carrier 20 is installed in the first chamber 11 of the base 10, the first electrode piece inductor 71 is correspondingly arranged with the first electrode piece 72 and there is a certain gap between the two. After the first electrode piece inductor is energized, the first electrode piece and the first electrode piece inductor form a capacitive structure. After the first carrier and the first electrode piece inductor move, the capacitance value of this capacitor will change. According to this change, the moving position of the first carrier can be judged, thus realizing the effect of a position sensor.

[0038] The second electrode piece 82 is connected to the bottom circuit board 93 and energized and extends into the third avoidance groove 15. The second electrode piece is arranged in an inverted structure above the second coil 51. A second magnet groove is provided at the bottom of the first carrier 20 to install the second driving magnet 52. The second driving magnet 52 is attracted to the first built-in metal 21 inside the first carrier. After the second electrode piece is energized, a capacitive structure is formed between the second driving magnet and the second electrode piece, which can be used for position monitoring of the nodding action of the first carrier. That is to say, in this embodiment, the electrode piece inductor is the second driving magnet. Optionally, the part of the first built-in metal 21 arranged in the second magnet groove can also form a second electrode piece inductor, and the position detection of the first carrier during the nodding action is realized by the cooperation of the second electrode piece and the first built-in metal inside the first carrier.

[0039] In one embodiment, a first end plate 16 is provided at the end of the base close to the first carrier. An installation protrusion 161 integrally extends from the inner wall of the first end plate 16 into the first chamber. An installation groove 22 is provided at the end of the first carrier 20 close to the first end plate 16. After the first carrier 20 is installed in the first chamber 11, the installation protrusion 161 extends into the installation groove 22. Among them, contact bumps 221 are provided in the installation groove. The contact bumps 221 are arranged on the first built-in metal 21 inside the first carrier and are arranged in the installation groove 22. A flexible member 162, such as a soft rubber gasket, is provided at the end of the installation protrusion 151. The flexible member 162 abuts against the contact bumps 221 and forms a movement fulcrum when the first carrier 20 moves in different directions, thereby reducing the friction force when the first carrier performs an action. Optionally, the first end plate 16 is detachably connected to the base.

[0040] In one embodiment, a shrapnel 17 is provided between the first end plate 16 and the first carrier. The shrapnel 17 is arranged on the inner surface of the first end plate 16 and forms an avoidance opening 171 at the position of the installation protrusion 161. The periphery of the avoidance opening 171 is fixedly connected to the surface of the first carrier 20. Both ends of the shrapnel 17 are fixedly connected to the inner wall of the first end plate 16. Thus, the flexible member 162 on the installation protrusion is tightly pressed against the contact bump 221 in the installation groove by the pre-pressure of the shrapnel 17. When the first carrier 20 moves, the elastic force of the shrapnel 17 is also used to drive the first carrier 20 to reset. That is to say, due to the existence of a certain pre-pressure in the shrapnel 17, the flexible member on the installation protrusion is tightly abutted against the contact bump on the installation groove. At the same time, when the first carrier generates an action, the shrapnel can play an auxiliary reset role.

[0041] Optionally, a shrapnel installation protrusion 24 is provided on the end face of the first carrier 20 close to the first end plate. The periphery of the avoidance opening 171 of the shrapnel 17 is fixedly connected to the installation protrusion 24.

[0042] Optionally, a connection portion 94 is provided at one end of the flexible circuit board 90 close to the first end plate of the base to be connected to one end of the shrapnel 17. The other end of the shrapnel 17 is connected to the built-in metal 21 of the first carrier 20. Thus, the flexible circuit board 90 is electrically connected to the first electrode piece inductor 71 and the second electrode piece inductor 81 through the shrapnel 17.

[0043] In one embodiment, the first side circuit board 91 and the second side circuit board 92 of the flexible circuit board 90 extend all the way to the second chamber 12 and are arranged on both sides of the second carrier 30. The third driving mechanism includes a third driving magnet 31 provided on the side of the second carrier 30 and a third driving coil 32 provided on the inner wall of the flexible circuit board. A third coil avoidance groove 321 is provided on the side of the base. The third driving coil 32 is arranged in the third coil avoidance groove 321. When the third driving coil 32 is energized, it cooperates with the third driving magnet 31 to drive the second carrier 30 to move along the optical axis direction of the lens, realizing the optical zoom function.

[0044] In one embodiment, an anti-collision flexible member 23, such as anti-collision soft glue, is provided at the top of the first carrier 20, which can prevent the first carrier from colliding with the base or other components during movement. Optionally, an anti-collision groove 231 is provided on the upper surface of the first carrier 20, and the anti-collision flexible member 23 is installed in the anti-collision groove 231.

[0045] In one embodiment, a damping glue 25 is provided between the outer wall of the first carrier 20 and the inner wall of the base, which can play an auxiliary reset role when the first carrier moves. Optionally, a damping glue groove 251 is provided on the outer wall of the first carrier 20, and the damping glue 25 is installed in the damping glue groove 251.

[0046] It should be noted that although the second carrier 30 is also driven by an electromagnetic driving mechanism in the above description, those skilled in the art can understand that the second carrier 30 can also adopt other driving forms, such as piezoelectric driving, shape memory alloy driving, etc. In addition, the detection method for the movement position of the second carrier 30 can be position detection through sensors, etc., which is not limited herein.

[0047] The following introduces a prism lens integrated driving device according to an embodiment of the present invention. The prism lens integrated driving device of this embodiment mainly improves the second carrier and its related structures.

[0048] Refer to Figure 1 , a prism lens integrated driving device 100 according to an embodiment of the present invention includes a base 10, a first carrier 20 (also referred to as a prism driving carrier), a second carrier 30 (also referred to as a lens driving carrier), a first driving mechanism (also referred to as a nodding driving mechanism), a second driving mechanism (also referred to as a shaking driving mechanism), and a third driving mechanism (also referred to as an AF driving mechanism). The first carrier and the second carrier are installed on the base 10 and are respectively used to install a prism and a lens. The first driving mechanism and the second driving mechanism drive the first carrier to move in different directions to achieve an optical image stabilization function, and the third driving mechanism drives the second carrier to move along the optical axis direction of the lens to achieve an optical zoom function. Among them, the second carrier and the base are provided with a third basic capacitor structure. The third basic capacitor structure includes a third electrode piece inductor 61 disposed in the second carrier and a third electrode piece 62 disposed on the base. The third electrode piece inductor 61 and the third electrode piece 62 are disposed opposite to each other and there is a certain gap between them. After the third electrode piece inductor is energized, the third electrode piece and the third electrode piece inductor form a capacitor structure, which can be used for position detection of the zoom operation of the second carrier. When the second carrier 30 moves in the optical axis direction, position detection is performed through this basic capacitor structure, so that a position sensor does not need to be used, thereby simplifying the circuit structure, improving the product reliability, and at the same time further reducing the product cost and increasing the service life of the product.

[0049] In an embodiment, the third driving mechanism and the third basic capacitor structure are respectively arranged on opposite sides of the second carrier 30. The third driving mechanism includes a third driving magnet 31 disposed on the side wall of the second carrier and a third driving coil 32 disposed on the base. Optionally, a third driving magnet mounting groove 311 is provided on the side wall of the second carrier, and the third driving magnet 31 is mounted in the third driving magnet mounting groove 311.

[0050] In one embodiment, a first chamber 11 and a second chamber 12 are successively provided on the base along the optical axis direction of the lens. The first carrier 20 is disposed in the first chamber 11, and the second carrier 30 is disposed in the second chamber 12. Wherein, third coil avoidance grooves 321 and third electrode plate avoidance grooves 621 are respectively provided on the inner walls of two opposite side plates of the second chamber 12.

[0051] In one embodiment, the prism lens integrated driving device further includes a flexible circuit board 90. The flexible circuit board 90 is arranged on the outer side wall of the base 10. The third driving coil 32 is disposed on one inner wall side of the flexible circuit board and arranged in the third coil avoidance groove 321, and the third electrode plate 62 is disposed on the other inner wall side of the flexible circuit board and arranged in the third electrode plate avoidance groove 621.

[0052] In one embodiment, a second carrier built-in metal sheet 33 is provided in the second carrier. The second carrier built-in metal sheet 33 is provided with a third electrode plate induction member 61. The third electrode plate induction member 61 and the third electrode plate 62 are oppositely arranged to form a gap. After the third electrode plate induction member 61 is energized, the third electrode plate and the third electrode plate induction member form a capacitive structure to detect the position of the zoom operation of the second carrier.

[0053] The bottom of the second carrier built-in metal sheet 33 is disposed inside the second carrier, and a second side metal sheet 331 is formed on the opposite side of the third electrode plate induction member 61. The second side metal sheet 331 is also disposed in the second carrier 30 to increase the strength of the second carrier 30.

[0054] Optionally, the third electrode plate induction member 61 is formed in a long strip shape extending upward and is electrically connected to the second carrier built-in metal sheet through a third electrode plate energizing plate 332.

[0055] In one embodiment, two third electrode plates 62 are provided on the inner wall of the flexible circuit board 90. The two third electrode plates 62 are arranged side by side vertically and have a "trapezoidal" structure. The large and small ends of the two third electrode plates 62 are arranged side by side.

[0056] Optionally, a connecting spring piece 63 is further provided on the inner wall of the flexible circuit board 90. The connecting spring piece 63 is arranged below the third electrode plate 62. One end of the connecting spring piece 63 abuts against the third electrode plate energizing plate 332 under the action of elasticity and supplies power to the third electrode plate induction member through the second carrier built-in metal sheet.

[0057] In one embodiment, a ball mounting groove 34 is provided at the bottom of the second carrier 30. A ball 35 is provided in the ball mounting groove 34. A ball moving groove 123 is provided at the bottom of the second chamber 12. When the second carrier moves, the ball 35 rolls in the ball moving groove 123 to reduce the friction when the second carrier performs a zoom operation.

[0058] In one embodiment, an adsorption magnet 36 is embedded at the bottom end of the second carrier 30, and an adsorption iron sheet 124 is embedded at the bottom of the second chamber 12. The adsorption magnet 36 and the adsorption iron sheet 124 are arranged opposite to each other and form a suction force, which enables the second carrier to abut against the inside of the base and enhances the structural compactness between the second carrier and the base, preventing the balls from disengaging from the ball mounting grooves.

[0059] In one embodiment, an anti-collision flexible member 37 is provided at the end of the second carrier 30 away from the first carrier 20. Optionally, an anti-collision flexible member mounting groove 371 is provided at the end of the second carrier 30 away from the first carrier 20, and the anti-collision flexible member 37 is mounted in the anti-collision flexible member mounting groove 371.

[0060] In the present invention, the prism mounted on the first carrier can achieve the shaking of the prism through nodding and shaking motions, thereby changing the angle of the incident light. A lens is mounted on the second carrier, and the second carrier can drive the lens to move along the optical axis direction of the lens to achieve the zoom effect of the lens.

[0061] It should be noted that the various features shown in the drawings of the present invention can appear alone or in combination. For example, although in the structure shown in the drawings, both the first carrier and the second carrier use the base capacitance structure for position detection, however, those skilled in the art can understand that the position detection methods of the first carrier and the second carrier can be that the first carrier performs position detection through the base capacitance structure, the second carrier performs position detection through a position sensor, and the first carrier performs position detection through a position sensor, the second carrier performs position detection through the base capacitance structure, or both the first carrier and the second carrier perform position detection through the base capacitance structure.

[0062] In addition, the present invention can prevent the first carrier and the second carrier from colliding with the base or other components during movement by providing anti-collision soft rubber at the top end of the first carrier and at the front and rear ends of the second carrier. A damping rubber is provided between the outer side wall of the first carrier and the inner wall of the base, which can play an auxiliary reset role when the first carrier moves.

[0063] The flexible circuit board is arranged on the outer side and the bottom of the base. The flexible circuit board is provided with a first drive coil, a second drive coil and a third drive coil. The first drive coil cooperates with the first drive magnet arranged on the side of the first carrier to achieve the shaking motion of the first carrier. The second drive coil cooperates with the second drive magnet arranged at the bottom of the second carrier to achieve the nodding motion of the second carrier. The third drive coil cooperates with the second drive magnet arranged on the side of the second carrier to achieve the zoom motion of the second carrier.

[0064] The present invention can selectively arrange a base capacitance structure between the first carrier and the base and / or between the second carrier and the base for position detection, so that there is no need to use a position sensor, high detection accuracy can be achieved, costs can be saved, and the service life of the product can be extended, having broad commercial application prospects.

[0065] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims

1. An integrated driving device for a prism lens, characterized in that, The integrated driving device for a prism lens includes a base, a first carrier, a second carrier, a first driving mechanism, a second driving mechanism, and a third driving mechanism. The first carrier and the second carrier are respectively used to mount the prism and the lens and are arranged on the base. The first driving mechanism and the second driving mechanism drive the first carrier to move in different directions, and the third driving mechanism drives the second carrier to move along the optical axis direction of the lens, wherein the first carrier and the base are provided with a first base combined capacitance structure and a second base combined capacitance structure. The first base combined capacitance structure includes a first electrode sheet inductor disposed in the first carrier and a first electrode sheet disposed on the base. The second base combined capacitance structure includes a second electrode sheet inductor disposed in the first carrier and a second electrode sheet disposed on the base. The displacement of the first carrier in different directions is detected by the cooperation between the first electrode sheet and the first electrode sheet inductor and by the cooperation between the second electrode sheet and the second electrode sheet inductor; the second driving mechanism includes a second coil disposed on the base and a second driving magnet disposed at the bottom of the first carrier. The integrated driving device for a prism lens further includes a flexible circuit board. The first electrode sheet is disposed on the inner wall of the first side circuit board of the flexible circuit board, and the second electrode sheet is disposed above the second coil and is connected to the inner wall of the bottom circuit board of the flexible circuit board at both ends; after the first electrode sheet inductor is energized, the first electrode sheet and the first electrode sheet inductor form a capacitance structure. After the first carrier and the first electrode sheet inductor move, the capacitance value of this capacitance will change, and the moving position of the first carrier is judged according to this change; after the second electrode sheet is energized, a capacitance structure is formed between the second driving magnet and the second electrode sheet, which is used for monitoring the position of the nodding action of the first carrier.

2. The integrated driving device of the prism lens according to claim 1, wherein, The first driving mechanism and the first base combined capacitance structure are respectively arranged on both sides of the first carrier, and the second driving mechanism and the second base combined capacitance structure are arranged at the bottom of the first carrier.

3. The integrated driving device of a prism lens according to claim 2, characterized in that, The first driving mechanism includes a first driving magnet disposed on the first side of the first carrier and a first coil disposed on the first side of the base. The second electrode sheet is disposed above the second coil.

4. The integrated driving device of a prism lens according to claim 3, wherein The base is sequentially provided with a first chamber and a second chamber along the optical axis direction of the lens. The first carrier is disposed in the first chamber, the second carrier is disposed in the second chamber. First avoidance grooves and second avoidance grooves are respectively provided on the opposite two side plates of the first chamber, and a third avoidance groove is provided at the bottom of the first chamber. Among them, the first electrode sheet is disposed in the first coil avoidance groove, the first coil is disposed in the second avoidance groove, and the second coil is disposed in the third avoidance groove.

5. The integrated driving device of a prism lens according to claim 4, wherein, The second electrode sheet is disposed above the second coil and is disposed in the third avoidance groove together.

6. The integrated driving device of a prism lens according to claim 4, wherein The flexible circuit board is arranged on the outer walls of two opposite side plates and the bottom of the base and includes a first side circuit board, a second side circuit board and a bottom circuit board which are opposite to each other. Among them, the bottom circuit board is matched with the third avoidance groove, the first coil is arranged on the inner wall of the second side circuit board and arranged in the second coil avoidance groove, the first electrode piece is arranged on the inner wall of the first side circuit board and arranged in the first avoidance groove, and the second coil is arranged on the bottom circuit board and arranged in the third avoidance groove.

7. The integrated driving device of a prism lens according to claim 6, wherein, The second electrode piece is arranged above the second coil and is connected to the inner wall of the bottom circuit board at both ends.

8. The integrated driving device of a prism lens according to claim 4, wherein, The first carrier is provided with built-in metal, and the built-in metal includes a bottom and a first built-in metal side part and a second built-in metal side part which extend upward from both sides of the bottom. The top end of the first built-in metal side part integrally extends downward the first electrode piece inductor. After the first carrier is installed in the first chamber, the first electrode piece inductor and the first electrode piece are arranged corresponding to each other and a gap is formed between the two.

9. The integrated driving device of a prism lens according to claim 8, wherein, One end of the base close to the first carrier is provided with a first end plate. An installation protrusion integrally extends from the inner wall of the first end plate, and an installation groove is provided on the side part of the first carrier close to the first end plate. The installation protrusion extends into the installation groove. Among them, contact bumps are arranged in the installation groove, and a flexible part is arranged at the end of the installation protrusion. The flexible part abuts against the contact bumps and forms a movement fulcrum when the first carrier moves in different directions.

10. The integrated driving device of a prism lens according to claim 9, wherein The prism lens integrated driving device further includes a spring piece. The spring piece is arranged on the inner surface of the first end plate and forms an avoidance opening at the position of the installation protrusion. The periphery of the avoidance opening is fixedly connected to the end face of the first carrier, and both ends of the spring piece are fixedly connected to the inner wall of the first end plate.

11. The integrated driving device of a prism lens according to claim 10, characterized in that, The end face of the first carrier close to the first end plate is provided with a spring piece installation protrusion, and the periphery of the avoidance opening of the spring piece is fixedly connected to the installation protrusion.

12. The integrated driving device of a prism lens according to claim 10, characterized in that, One end of the flexible circuit board is connected to one end of the spring piece, and the built-in metal of the first carrier is connected to the other end of the spring piece, so that the flexible circuit board is electrically connected to the first electrode piece inductor and the second electrode piece inductor through the spring piece.

13. The integrated driving device of a prism lens according to claim 1, wherein, Anti-collision flexible parts are provided at the top ends of the first carrier and the second carrier, and / or damping glue is provided between the outer wall of the first carrier and the inner wall of the base.

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