Piezoelectric shutter and lens modules

Abstract

The present invention discloses a piezoelectrically driven shutter and lens module, the piezoelectrically driven shutter comprising: a housing, a base, the housing being sleeved on the base and forming a hollow cavity, a piezoelectric driving mechanism, the piezoelectric driving mechanism being disposed in the hollow cavity and comprising a piezoelectric element and a friction member, a carrier, the carrier being disposed in the hollow cavity and provided with a friction fitting member, the friction fitting member being in contact with the friction member, and a movable baffle, the movable baffle being disposed in the hollow cavity and fixedly connected to the carrier, wherein the housing is provided with at least one first light inlet hole, the movable baffle is provided with at least one second light inlet hole, the piezoelectric driving mechanism driving the carrier to drive the movable baffle to switch between a light-shielding position and a light-inlet position, wherein in the light-shielding position, the movable baffle covers the first light inlet hole, and in the light-inlet position, the first light inlet hole is aligned with the second light inlet hole. This piezoelectrically driven shutter not only has a simple structure and occupies a small volume, but also makes the opening and closing of the shutter more sensitive, flexible, and precise.

Description

Technical Field

[0001] The present invention relates to the field of optical imaging, and in particular to a piezoelectrically driven shutter and lens module. Background Art

[0002] The shutter is usually set on the outside of the lens, and the lens is blocked through action. When the shutter is pressed, the shutter opens, allowing light to enter the lens; after the photo is taken, the shutter closes, blocking the lens and preventing light from entering the lens.

[0003] Shutters are categorized as mechanical and electronic. Mechanical shutters are further divided into two types: purely mechanical and electromagnetic. Existing mechanical electromagnetic shutters are relatively complex and bulky, hindering camera miniaturization. Summary of the Invention

[0004] The purpose of the present invention is to provide a piezoelectrically driven shutter and lens module to solve the problems existing in the above-mentioned prior art.

[0005] In order to solve the above problems, according to the first aspect of the present invention, a piezoelectric driven shutter is provided, characterized in that the piezoelectric driven shutter includes: a shell, a base, the shell is mounted on the base and forms a hollow cavity, a piezoelectric driving mechanism, the piezoelectric driving mechanism is arranged in the hollow cavity and includes a piezoelectric element and a friction part, a carrier, the carrier is arranged in the hollow cavity and is provided with a friction fitting part, the friction fitting part is in contact with the friction part, and a movable baffle, the movable baffle is arranged in the hollow cavity and fixedly connected to the carrier, wherein the shell is provided with at least one first light inlet hole, the movable baffle is provided with at least one second light inlet hole, the piezoelectric driving mechanism drives the carrier to drive the movable baffle to switch between a light-shielding position and a light-inlet position, in the light-shielding position, the movable baffle covers the first light inlet hole, and in the light-inlet position, the first light inlet hole is aligned with the second light inlet hole.

[0006] Preferably, the upper surface of the shell is provided with two first light inlet holes along the length direction, and the movable baffle is provided with a second light inlet hole. In the light-shielding position, the movable baffle covers the two first light inlet holes, and in the light-inlet position, one of the first light inlet holes is aligned with the second light inlet hole.

[0007] Preferably, the upper surface of the shell is provided with two first light inlet holes along the length direction, and the movable baffle is provided with two second light inlet holes. In the light-shielding position, the movable baffle covers the two first light inlet holes, and in the light-inlet position, one of the first light inlet holes is aligned with one of the second light inlet holes or two of the first light inlet holes are aligned with two of the second light inlet holes.

[0008] Preferably, the friction member is a friction rod, and the friction rod is connected to the inner surface of the piezoelectric element.

[0009] Preferably, the carrier includes a top plate and a rear side plate extending downward along the rear end of the top plate, the top plate is fixedly connected to the movable baffle, and the rear side plate is fixedly provided with the friction fitting and is movably connected to the base through a guide mechanism.

[0010] Preferably, the piezoelectric drive mechanism further includes a spring sheet, which is mounted on the base and abuts against the piezoelectric element to apply an elastic force to the piezoelectric element in a direction toward the carrier.

[0011] Preferably, a friction fitting member installation groove is provided on the inner side surface of the rear side plate, and the friction fitting member is installed in the friction fitting member installation groove.

[0012] Preferably, the guide mechanism includes a ball, a ball groove and a slide groove, the ball groove is arranged on the rear surface of the rear side plate, and the slide groove is arranged on the inner surface of the base and extends along the length direction of the base, the ball is installed in the ball groove and slides with the slide groove to guide the movement of the carrier.

[0013] Preferably, the rear surface of the rear side plate is provided with four ball rolling grooves, the four ball rolling grooves are arranged in two rows, and the inner surface of the base is provided with two sliding grooves.

[0014] Preferably, a first opening and a second opening are respectively provided on the top and the front of the base, and the movable baffle and the elastic sheet are respectively provided at the first opening and the second opening.

[0015] Preferably, the base is provided with a first limiting mechanism and a second limiting mechanism on both sides of the first opening, and a movable baffle groove extending along the length direction of the base is formed between the first limiting mechanism and the second limiting mechanism, and the movable baffle is movably installed in the movable baffle groove to perform linear motion.

[0016] Preferably, the base includes a first side wall, a second side wall and a third side wall formed around the cavity, the first side wall is arranged opposite to the second opening, and the second side wall and the third side wall are respectively arranged on both sides of the first side wall.

[0017] Preferably, the first side wall extends upward to form a protrusion above the plane where the first opening is located to become a first limiting mechanism, the second side wall and the third side wall extend upward to form a protrusion above the plane where the first opening is located to become a second limiting mechanism, and a movable baffle groove extending along the length direction of the base is formed between the first limiting mechanism and the second limiting mechanism, and the movable baffle is movably installed in the movable baffle groove to perform linear motion.

[0018] Preferably, the second side wall and the third side wall are respectively provided with spring installation grooves on their sides facing the second opening, and both ends of the spring are respectively installed in the spring installation grooves so that the spring is arranged in the second opening.

[0019] Preferably, the slide groove is arranged on the inner side surface of the first side wall and extends along the length direction of the base. The ball is installed in the ball groove and slides with the slide groove to make the carrier move linearly along the length direction of the base.

[0020] Preferably, the piezoelectrically driven shutter further comprises a circuit board, which is mounted on the outer side of the spring and electrically connected to the piezoelectric element;

[0021] Preferably, the spring sheet is provided with an avoidance hole, and the circuit board is electrically connected to the piezoelectric element through the avoidance hole.

[0022] According to a second aspect of the present invention, a lens module is provided, characterized in that the lens module includes a lens and a piezoelectrically driven shutter as described above, wherein the lens is mounted on the outside of at least one end of the base, and the outer shell is mounted on the base and the lens.

[0023] The present invention has the following beneficial effects: by controlling the voltage and duration of the piezoelectric drive mechanism, the shutter opening time can be conveniently adjusted to meet professional photography needs. This piezoelectrically driven shutter not only has a simple structure and occupies a small volume, but also enables more sensitive, flexible, and precise shutter opening and closing. This contributes to the miniaturization of lens modules, reduces costs, and facilitates assembly and control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is an exploded view of a lens module according to an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A perspective view of the lens module assembly shown;

[0026] Figure 3 yes Figure 1 A perspective view of the piezoelectrically actuated shutter assembly within the lens module is shown with the housing, base, and movable shutter removed;

[0027] Figure 4 yes Figure 1 AA cross-sectional view of the lens module shown. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0029] In the following description, for the purpose of illustrating the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0030] Reference throughout this specification to "one embodiment" or "an embodiment" means that a 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 this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0031] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but words such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and should not be understood as restrictive terms.

[0032] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0033] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] Figure 1 This is an exploded view of a lens module according to an embodiment of the present invention. Figure 2 yes Figure 1 The stereogram of the lens module assembly shown, Figure 3 yes Figure 1 A perspective view of the piezoelectric shutter assembly in the lens module shown, with the housing, base, and movable barrier removed. Figure 4 yes Figure 1 The AA cross-sectional view of the lens module is shown. Figure 1 and Figure 2 One embodiment of the present invention provides a lens module 1, which may include a piezoelectrically driven shutter 10 and a lens 2. The piezoelectrically driven shutter 10 includes a housing 11, a base 12, a piezoelectric drive mechanism 14, a carrier 15, and a movable baffle 16. The housing 11 is sleeved on the base 12 and forms a hollow cavity 13. The piezoelectric drive mechanism 14 is disposed within the hollow cavity 13 and includes a piezoelectric element 141 and a friction member 142. The carrier 15 is disposed within the hollow cavity 13 and is provided with a friction mating member 143, which contacts the friction member 142. The movable baffle 16 is disposed within the hollow cavity 13 and is fixedly connected to the carrier 15. The housing 11 is provided with at least one first light inlet 111, and the movable baffle 16 is provided with at least one second light inlet 161. The piezoelectric drive mechanism 14 drives the carrier 15 to drive the movable baffle 16 to switch between a light-shielding position and a light-inlet position, wherein, in the light-shielding position, the movable baffle 16 covers the first light inlet 111, and in the light-inlet position, the first light inlet 111 is aligned with the second light inlet 161.

[0035] It should be noted that when the shutter button is pressed, the piezoelectric drive mechanism 14 drives the movable baffle 16 to move from the light-blocking position to the light-entering position, that is, the shutter is opened, and light enters the lens 2 from the first light-entering hole 111 and the second light-entering hole 161; after the photo is taken, the piezoelectric drive mechanism 14 drives the movable baffle 16 to move from the light-entering position to the light-blocking position, that is, the shutter is closed, and the movable baffle 16 blocks the lens 2, and light cannot enter the lens 2.

[0036] This design allows for convenient adjustment of the shutter opening time by controlling the voltage and duration of the piezoelectric drive mechanism 14 to meet professional photography needs. This piezoelectrically driven shutter not only offers a simple structure and compact footprint, but also enables more sensitive, flexible, and precise shutter opening and closing. This contributes to miniaturization of the lens module, lowering costs, and facilitating assembly and control.

[0037] In one embodiment of the present invention, referring to Figure 1The upper surface of the housing 11 is provided with two first light inlet holes 111 along the length direction, and the movable baffle 16 is provided with a second light inlet hole 161. In the light-shielding position, the movable baffle 16 covers the two first light inlet holes 111, and in the light-inlet position, one of the first light inlet holes 111 is aligned with the second light inlet hole 161.

[0038] With such a design, the shutter can be opened and closed through the two first light holes 111 and the one second light hole 161 .

[0039] In one embodiment of the present invention, referring to Figure 1 The upper surface of the housing 11 is provided with two first light inlet holes 111 along the length direction, and the movable baffle 16 is provided with two second light inlet holes 161. In the light-shielding position, the movable baffle 16 covers the two first light inlet holes 111, and in the light-inlet position, one of the first light inlet holes 111 is aligned with one of the second light inlet holes 161 or the two first light inlet holes 111 are aligned with the two second light inlet holes 161.

[0040] With such a design, the shutter can be opened and closed through the two first light holes 111 and the two second light holes 161 .

[0041] In one embodiment of the present invention, referring to Figure 3 The friction member 142 is a friction rod, which is connected to the inner surface of the piezoelectric element 141 .

[0042] Through such a design, the piezoelectric element 141 and the friction member 142 in the piezoelectric drive mechanism 14 can be matched.

[0043] In one embodiment of the present invention, referring to Figure 1 、 Figure 3 and Figure 4 The piezoelectric drive mechanism 14 includes a piezoelectric element 141, a friction member 142, a friction fitting member 143 and a spring 144. The friction fitting member 143 is fixedly mounted on the carrier 15 and abuts against one end of the friction member 142 to frictionally fit with the friction member 142. The other end of the friction member 142 cooperates with the piezoelectric element 141. When energized, the piezoelectric element 141 deforms to drive the friction member 142 to move, thereby driving the friction fitting member 143 and the carrier 15 to move linearly to drive the movable baffle 16 to switch between the light-shielding position and the light-incoming position. The spring 144 is mounted on the base and abuts against the piezoelectric element 141 to apply an elastic force toward the carrier 15 to the piezoelectric element 141.

[0044] This design has the following effects:

[0045] First, piezoelectric element 141 changes shape when energized. By adjusting the frequency of the applied current, the outer diameter of piezoelectric element 141 rapidly changes, causing friction member 142, to which it is fixed, to vibrate continuously. Because friction member 142 abuts against friction mating member 143, creating a force between them, the vibration of friction member 142 drives friction mating member 143 to move, thereby driving carrier 15 in linear motion and, consequently, movable baffle 16 to switch between a light-blocking position and a light-receiving position. This makes the shutter opening and closing more sensitive, flexible, and precise.

[0046] Second, the spring plate 144 has a certain degree of elasticity. Its contact with the piezoelectric element 141 creates a force, causing the spring plate 144 to press the piezoelectric element 141 toward the friction member 143 or the carrier 15. Furthermore, because the piezoelectric element 141 is fixedly connected to one end of the friction member 142, the friction between the friction members 142 and 143 is increased, thereby enhancing the driving effect of the piezoelectric drive mechanism 14 and making the shutter opening and closing more sensitive, flexible, and precise.

[0047] In one embodiment of the present invention, referring to Figure 1 and Figure 4 The carrier 15 includes a top plate 151 and a rear side plate 152 extending downward along the rear end of the top plate. The top plate 151 and the rear side plate 152 present an "L" structure as a whole. The top plate 151 is fixedly connected to the movable baffle 16, and the rear side plate 152 is fixedly provided with a friction fitting 143 and is movably connected to the base 12 through a guide mechanism 17.

[0048] With this design, the carrier 15 is disposed in the hollow cavity 13 formed by the housing 11 and the base 12 , which not only simplifies the structure and saves space, but also can better drive the movable baffle 16 to switch between the light-shielding position and the light-incoming position.

[0049] Specifically, refer to Figure 1 The carrier 15 includes a top plate 151 and a rear side plate 152 extending vertically downward from one end of the top plate 151. The top plate 151 and the rear side plate 152 form an "L" structure as a whole. The top plate 151 is fixedly connected to the movable baffle 16. The inner side surface of the rear side plate 152 is provided with a friction fitting installation groove 153, and the friction fitting member 143 is installed in the friction fitting installation groove 153. The inner side surface of the rear side plate 152 is adjacent to the piezoelectric drive mechanism 14, and the outer side surface of the rear side plate 152 is adjacent to the base 12. In other words, the inner side surface of the rear side plate 152 is the inner side surface of the carrier 15, and the outer side surface of the rear side plate 152 is the outer side surface of the carrier 15.

[0050] Through such a design, the carrier 15 is driven and connected to the piezoelectric drive mechanism 14 to achieve a transmission drive effect.

[0051] In one embodiment of the present invention, referring to Figure 1 、 Figure 3 and Figure 4 The piezoelectrically driven shutter 10 further includes a guide mechanism 17 , through which the base 12 and the carrier 15 are movably connected, and the carrier 15 moves linearly under the guidance of the guide mechanism 17 .

[0052] Through such a design, the guide mechanism 17 can not only reduce the friction resistance when the carrier 15 moves relative to the base 12, but also guide the movement of the carrier 15 relative to the base 12, thereby indirectly guiding the movable baffle 16 to switch between the light-blocking position and the light-incoming position.

[0053] In one embodiment of the present invention, referring to Figure 1 、 Figure 3 and Figure 4 The guide mechanism 17 includes a ball 171, a ball groove 172 and a slide groove 173. The ball groove 172 is arranged on the rear surface of the rear side plate 152 and the slide groove 173 is arranged on the inner surface of the base 12 and extends along the length direction of the base 12. The ball 171 is installed in the ball groove 172 and slides with the slide groove 173 to make the carrier 15 move linearly along the length direction of the base 12 (to guide the movement of the carrier 15).

[0054] Through such a design, the ball 171, the ball groove 172 and the slide groove 173 can not only reduce the friction resistance when the carrier 15 moves relative to the base 12, but also guide the movement of the carrier 15 relative to the base 12, thereby indirectly guiding the movable baffle 16 to switch between the light-blocking position and the light-incoming position.

[0055] Specifically, refer to Figure 3 and Figure 4 The carrier 15 includes a top plate 151 and a rear side plate 152 extending vertically downward along one end of the top plate 151. The top plate 151 and the rear side plate 152 form an "L" structure as a whole. The top plate 151 is fixedly connected to the movable baffle 16. The outer side surface of the rear side plate 152 is provided with a ball groove 172, and the ball 171 is arranged in the ball groove 172.

[0056] Specifically, refer to Figure 1 、 Figure 3 and Figure 4 The rear surface of the rear side plate 152 is provided with four ball grooves 172 , which are arranged in two rows, and the inner surface of the base 12 is provided with two sliding grooves 173 .

[0057] In one embodiment of the present invention, referring to Figure 1 The base 12 is in a rectangular shape, and a chamber 121 is provided in the base 12, and a carrier 15 is provided in the chamber 121. A first opening 122 and a second opening 123 are provided at the top and the front of the base 12, respectively. The movable baffle 16 and the spring 144 are respectively provided at the first opening 122 and the second opening 123.

[0058] With such a design, the carrier 15 is disposed in the cavity 121 of the base 12 , which has a simple structure and saves space.

[0059] Specifically, refer to Figure 1 The base 12 includes a first side wall 1261 , a second side wall 1262 and a third side wall 1263 formed around the chamber 121 . The first side wall 1261 is arranged opposite to the second opening 123 , and the second side wall 1262 and the third side wall 1263 are respectively arranged on both sides of the first side wall 1261 .

[0060] In one embodiment of the present invention, referring to Figure 1 The base 12 is provided with a first limiting mechanism 1241 and a second limiting mechanism 1242 on both sides of the first opening 122. A movable baffle groove 125 extending along the length direction of the base 12 is formed between the first limiting mechanism 1241 and the second limiting mechanism 1242. The movable baffle 16 is movably installed in the movable baffle groove 125 to perform linear motion.

[0061] With such a design, the movable baffle 16 is limited when it switches between the light-shielding position and the light-receiving position.

[0062] Specifically, the first side wall 1261 extends upward above the plane where the first opening 122 is located to form a protrusion to become the first limiting mechanism 1241, the second side wall 1262 and the third side wall 1263 extend upward above the plane where the first opening 1222 is located to form a protrusion to become the second limiting mechanism 1242, and a movable baffle groove 125 extending along the length direction of the base 12 is formed between the first limiting mechanism 1241 and the second limiting mechanism 1242, and the movable baffle 16 is movably installed in the movable baffle groove 125 to perform linear motion.

[0063] Such a design not only simplifies the structure and saves space, but also limits the position of the movable baffle 16 when it switches between the light-shielding position and the light-entering position.

[0064] Specifically, the second side wall 1262 and the third side wall 1263 are respectively provided with elastic piece installation grooves 127 on the sides facing the second opening 123 , and both ends of the elastic piece 144 are respectively installed in the elastic piece installation grooves 127 so that the elastic piece 144 is disposed in the second opening 123 .

[0065] Such a design makes the structure simple and saves space.

[0066] Specifically, the slide groove 173 is provided on the inner side surface of the first side wall 1261 and extends along the length direction of the base 12 . The ball 171 is installed in the ball groove 172 and slidably cooperates with the slide groove 173 to enable the carrier 15 to move linearly along the length direction of the base 12 .

[0067] Such a design makes the structure simple and saves space.

[0068] In one embodiment of the present invention, referring to Figure 1 and Figure 2 The housing 11 is in a rectangular shape and contains a storage space. When the lens 2 and the piezoelectrically driven shutter 10 are installed together, the housing 11 is mounted on the lens 2 and the piezoelectrically driven shutter 10, so that the lens 2 and the piezoelectrically driven shutter 10 are arranged in the storage space of the housing 11.

[0069] Such a design makes the structure simple and saves space.

[0070] In one embodiment of the present invention, referring to Figure 1 and Figure 4 The piezoelectrically driven shutter 10 further includes a circuit board 18 , which is mounted on the outer side of the spring 144 and electrically connected to the piezoelectric element 141 .

[0071] Specifically, the spring 144 is provided with an escape hole 1441 , and the circuit board 18 is electrically connected to the piezoelectric element 141 through the escape hole 1441 .

[0072] Through such a design, the circuit board 18 can supply power to the piezoelectric drive mechanism 14 .

[0073] Specifically, the circuit board 18 is preferably a flexible printed circuit board (FPC board).

[0074] One embodiment of the present invention provides a lens module, referring to Figure 1 and Figure 2 The lens module 1 includes a lens 2 and a shutter. The shutter includes the piezoelectrically driven shutter described in any of the above embodiments or implementations. The lens 2 is mounted on the outside of at least one end of the base 12, and the housing 11 is mounted on the base 12 and the lens 1. There can be one or two lenses 2. When there is only one lens 2, the lens 2 can be placed on either side of the base 12. When there are two lenses 2, the lenses 2 can be placed on both sides of the base.

[0075] In addition, an embodiment of the present invention provides a photographic device, which includes the lens module described in any of the above embodiments or implementations. The photographic device can be a camera, a mobile phone with a photographic function, a tablet computer, a surveillance camera, etc.

[0076] While the preferred embodiments of the present invention have been described in detail above, it should be understood that, after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. Such equivalents also fall within the scope of the claims appended hereto.

Claims

1. A piezoelectrically driven shutter, characterized in that: The piezoelectrically driven shutter comprises: shell, The base is provided with the outer shell sleeved on the base to form a hollow cavity. A piezoelectric drive mechanism is disposed in the hollow cavity and includes a piezoelectric element and a friction member. a carrier, the carrier being disposed in the hollow cavity and provided with a friction fitting, the friction fitting being in contact with the friction part, and A movable baffle is disposed in the hollow cavity and fixedly connected to the carrier, wherein: The housing is provided with at least one first light inlet, and the movable baffle is provided with at least one second light inlet. The piezoelectric drive mechanism drives the carrier to drive the movable baffle to switch between a light-shielding position and a light-inlet position. In the light-shielding position, the movable baffle covers the first light inlet, and in the light-inlet position, the first light inlet is aligned with the second light inlet.

2. The piezoelectric shutter according to claim 1, wherein: The upper surface of the shell is provided with two first light inlet holes along the length direction, and the movable baffle is provided with a second light inlet hole. In the light-shielding position, the movable baffle covers the two first light inlet holes, and in the light-inlet position, one of the first light inlet holes is aligned with the second light inlet hole.

3. The piezoelectric shutter according to claim 1, wherein: The upper surface of the shell is provided with two first light inlet holes along the length direction, and the movable baffle is provided with two second light inlet holes. In the light-shielding position, the movable baffle covers the two first light inlet holes, and in the light-inlet position, one of the first light inlet holes is aligned with one of the second light inlet holes or two of the first light inlet holes are aligned with two of the second light inlet holes.

4. The piezoelectric shutter according to claim 3, wherein: The friction member is a friction rod, and the friction rod is connected to the inner surface of the piezoelectric element.

5. The piezoelectric shutter according to claim 1, wherein: The carrier includes a top plate and a rear side plate extending downward from the rear end of the top plate, the top plate is fixedly connected to the movable baffle, and the rear side plate is fixedly provided with the friction fitting and movably connected to the base through a guide mechanism.

6. The piezoelectrically driven shutter according to claim 4, wherein: The piezoelectric drive mechanism further includes a spring sheet, which is mounted on the base and abuts against the piezoelectric element to apply an elastic force toward the carrier to the piezoelectric element.

7. The piezoelectric shutter according to claim 5, wherein: A friction fitting member installation groove is provided on the inner side surface of the rear side plate, and the friction fitting member is installed in the friction fitting member installation groove.

8. The piezoelectrically driven shutter according to claim 5, wherein: The guiding mechanism includes a ball, a ball groove and a slide groove. The ball groove is arranged on the rear surface of the rear side plate, and the slide groove is arranged on the inner surface of the base and extends along the length direction of the base. The ball is installed in the ball groove and slides with the slide groove to guide the movement of the carrier.

9. The piezoelectrically driven shutter according to claim 8, wherein: The rear surface of the rear side plate is provided with four ball rolling grooves, which are arranged in two rows, and the inner surface of the base is provided with two sliding grooves.

10. The piezoelectrically driven shutter according to claim 6, wherein: A first opening and a second opening are respectively provided on the top and the front of the base, and the movable baffle and the elastic sheet are respectively provided at the first opening and the second opening.

11. The piezoelectrically driven shutter according to claim 10, wherein: The base is provided with a first limiting mechanism and a second limiting mechanism on both sides of the first opening, and a movable baffle groove extending along the length direction of the base is formed between the first limiting mechanism and the second limiting mechanism, and the movable baffle is movably installed in the movable baffle groove to perform linear motion.

12. The piezoelectrically driven shutter according to claim 6, wherein: The piezoelectrically driven shutter further includes a circuit board, which is mounted on the outer side of the spring and electrically connected to the piezoelectric element.

13. The piezoelectrically driven shutter according to claim 12, wherein: The spring sheet is provided with an avoidance hole, and the circuit board is electrically connected to the piezoelectric element through the avoidance hole.

14. A lens module, characterized in that the lens module comprises a lens and the piezoelectrically driven shutter according to any one of claims 1 to 13, wherein: The lens is mounted on the outer side of at least one end of the base, and the housing is sleeved on the base and the lens.

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