Variable aperture and camera module

Abstract

The invention relates to the technical field of camera modules, and particularly discloses a variable aperture and a camera module, the variable aperture comprises a shell, a rotating member rotatably connected to the shell, a driving member fixedly connected to the shell, and a plurality of blades, each blade is rotatably connected with the rotating member, and each blade is slidably connected with the shell, an aperture hole with an adjustable aperture is defined by the plurality of blades; one of the blades and the shell is provided with a guide groove, the other one of the blades and the shell is connected with a guide column, the guide column is inserted into the guide groove, the outer diameter of the guide column is not smaller than the width of the guide groove, the guide column is in interference fit with the guide groove, the guide column has elasticity, and the guide column is adaptive to the width of the guide groove by generating elastic deformation; when the guide column slides along the guide groove, the elastic deformation amount of the guide column at each position of the guide groove can be kept stable all the time, and when the aperture of the aperture hole is adjusted, the control precision of the aperture hole can be remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of camera modules, and in particular to a variable aperture and a camera module. Background Art

[0002] Electronic devices such as mobile phones and tablet computers are usually equipped with a camera module for taking photos or videos. The camera module usually includes an optical lens for imaging the captured scene, a motor for driving the optical lens to move, and a variable aperture arranged on the light incident side of the optical lens.

[0003] In the prior art, the variable aperture usually includes a housing, a rotor rotatably arranged on the housing, a stator fixedly arranged on the housing, and a plurality of blades evenly distributed along the circumferential direction of the rotor, each blade is provided with a guide groove, a plurality of guide posts are provided on the stator, the plurality of guide posts are slidably inserted into the plurality of guide grooves correspondingly, and the first ends of the plurality of blades are rotatably connected to the rotor, and the second ends of the plurality of blades are arranged to form an aperture hole, when the rotor rotates relative to the housing, the blades slide relative to the stator under the drive of the rotor and rotate relative to the rotor at the same time, thereby making the aperture of the aperture hole adjustable. However, the guide groove and the guide post are usually clearance-matched, which results in that when the aperture of the aperture hole is adjusted to a specified size, the stroke of the blades cannot be controlled, thereby affecting the control accuracy of the aperture of the aperture hole.

[0004] In this regard, a variable aperture is provided in the prior art, wherein an elastic hole is also provided on the blade, the elastic hole is located on one side of the guide groove, and an elastic rib is formed between the elastic hole and the guide groove, so that the guide groove and the guide column can be interference-fitted, and the rib is elastically deformed to ensure that the guide column can slide in the guide groove, thereby improving the problem of uncontrollable stroke of the blade when controlling the aperture size. However, the middle part of the elastic rib is more likely to deform than the two ends of the elastic rib. Therefore, when adjusting the aperture of the aperture, the control accuracy of the stroke of the guide column is relatively low when the guide column stops at the middle part of the elastic rib compared to when it stops at the two ends of the elastic rib, which affects the control accuracy of the aperture of the aperture to a certain extent.

[0005] Therefore, there is an urgent need for a variable aperture and a camera module to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a variable aperture and a camera module to improve the control accuracy of the aperture diameter of the aperture hole.

[0007] On the one hand, the present invention provides a variable aperture, which includes a shell, a rotating part rotatably connected to the shell, a driving part fixedly connected to the shell, and a plurality of blades, each of the blades is rotatably connected to the rotating part, and each of the blades is slidably connected to the shell, and the plurality of blades are arranged to form an aperture hole with adjustable aperture; one of the blades and the shell is provided with a guide groove, and the other of the two is connected with a guide column, the guide column is inserted into the guide groove, the outer diameter of the guide column is not less than the groove width of the guide groove, and the guide column is elastic.

[0008] As a preferred technical solution of the variable aperture, the guide post is in a cylindrical shape, or the guide post is in a ring shape.

[0009] As a preferred technical solution for the variable aperture, the guide column includes a plurality of first elastic ribs, the plurality of first elastic ribs are arranged in a circle, any two adjacent first elastic ribs are spaced apart, and each first elastic rib is passed through the guide groove.

[0010] As a preferred technical solution of the variable aperture, the first elastic rib is in an arc shape, and the first elastic rib has an inner wall and an outer wall, and along the groove width direction of the guide groove, the guide groove has a first groove wall and a second groove wall arranged at intervals;

[0011] The first groove wall abuts against and tangentially matches the outer side wall of one of the first elastic ribs, and the second groove wall abuts against and tangentially matches the outer side wall of another of the first elastic ribs.

[0012] As a preferred technical solution for the variable aperture, the first elastic rib is made of plastic material.

[0013] As a preferred technical solution of the variable aperture, the blade is rotatably connected to the rotating member via a rotating shaft, and a second deformation groove is further provided on the blade, and the second deformation groove is located on a side of the guide groove away from the rotating shaft, or the second deformation groove is located on a side of the guide groove close to the rotating shaft;

[0014] A second elastic rib is formed between the second deformation groove and the guide groove.

[0015] As a preferred technical solution of the variable aperture, a third deformation groove is further provided on the blade, the second deformation groove is located on a side of the guide groove close to the rotating shaft, and the third deformation groove is located on a side of the guide groove away from the rotating shaft;

[0016] A third elastic rib is formed between the third deformation groove and the guide groove.

[0017] As a preferred technical solution of the variable aperture, the width of the second elastic rib is equal to the width of the third elastic rib.

[0018] As a preferred technical solution for the variable aperture, the third deformation groove and the guide groove are both arc-shaped, the second deformation groove is arc-shaped or circular, and the centers of the guide groove, the second deformation groove and the third deformation groove coincide.

[0019] The variable aperture provided by the present invention has at least the following beneficial effects:

[0020] In the variable aperture, one of the blade and the shell is provided with a guide groove, and the other is connected with a guide column, which is inserted into the guide groove, and the outer diameter of the guide column is not less than the groove width of the guide groove, and the guide column is elastic, and the guide column and the guide groove are interference fit, and the guide column produces elastic deformation to adapt to the groove width of the guide groove, and enables the guide column to slide along the guide groove. Since there is no gap between the guide column and the guide groove, when the aperture of the aperture hole needs to be adjusted to a specified size, the sliding stroke of the guide column along the guide groove can be controlled, thereby making the stroke of the blade relative to the shell controllable; and, compared with the prior art, by making the guide column elastic, when the guide column slides along the guide groove, the amount of elastic deformation of the guide column at each position in the length direction of the guide groove can remain stable and consistent, which significantly improves the control accuracy of each aperture size of the aperture hole.

[0021] On the other hand, the present invention provides a camera module, comprising an optical lens, a motor and a variable aperture in any of the above-mentioned schemes, wherein the variable aperture is arranged on the light incident side of the optical lens, and the relative position of the variable aperture and the optical lens is fixed, the motor is transmission-connected to the optical lens, and the motor is used to drive the optical lens to move along the center line direction of the optical lens.

[0022] The camera module provided by the present invention has at least the following beneficial effects:

[0023] The camera module adopts the above-mentioned adjustable aperture, and the aperture hole has high control accuracy, thereby ensuring the shooting effect of the camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a variable aperture in an embodiment of the present invention;

[0025] Figure 2 is a schematic diagram of a first partial structure of a variable aperture in an embodiment of the present invention;

[0026] Figure 3 is an exploded view of a variable aperture in an embodiment of the present invention;

[0027] Figure 4 It is a first structural schematic diagram of a base in a variable aperture in an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of a second partial structure of a variable aperture in an embodiment of the present invention;

[0029] Figure 6 A second structural schematic diagram of a base in a variable aperture in an embodiment of the present invention;

[0030] Figure 7 for Figure 6 Magnified view at A in the middle;

[0031] Figure 8 is a schematic diagram of a third partial structure of a variable aperture in an embodiment of the present invention;

[0032] Fig. 9 is a third structural schematic diagram of a base in a variable aperture in an embodiment of the present invention;

[0033] Fig.10 for Fig. 9 Magnified view at B in the middle;

[0034] Fig.11 is a schematic diagram of a first structure of blades in a variable aperture in an embodiment of the present invention;

[0035] Fig.12 is a second structural schematic diagram of blades in a variable aperture in an embodiment of the present invention;

[0036] Fig.13 Schematic diagram of the third structure of the blades in the variable aperture in the embodiment of the present invention.

[0037] In the figure:

[0038] 1. Shell; 11. Base; 111. Second light-transmitting hole; 112. Annular boss; 113. First mounting groove; 114. Rolling groove; 12. Cover; 121. First light-transmitting hole; 13. Accommodating cavity;

[0039] 2. Rotating member; 21. Second mounting slot; 22. Third mounting slot;

[0040] 3. driving member; 31. coil; 32. first magnet; 33. second magnet;

[0041] 4. blade; 41. guide groove; 411. first groove wall; 412. second groove wall; 42. second deformation groove; 43. third deformation groove; 44. second elastic rib; 45. third elastic rib;

[0042] 5. Aperture hole; 6. Ball bearing; 7. Rotating shaft;

[0043] 8. Guide column; 81. Elastic groove; 82. First elastic rib; 821. Inner wall; 822. Outer wall. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0048] like Figures 1 to 3As shown, this embodiment provides a variable aperture, which includes a housing 1, a rotating member 2, a driving member 3, and a plurality of blades 4. The rotating member 2 is rotatably connected to the housing 1, the driving member 3 is fixedly mounted on the housing 1, each blade 4 is rotatably connected to the rotating member 2, and each blade 4 is slidably connected to the housing 1, and a plurality of blades 4 are arranged to form an aperture hole 5 with adjustable aperture. Specifically, when the driving member 3 drives the rotating member 2 to rotate relative to the housing 1, the rotating member 2 simultaneously drives the plurality of blades 4 to slide relative to the housing 1, and the blades 4 simultaneously rotate relative to the rotating member 2, so as to adjust the position of the blades 4 relative to the housing 1, and thus adjust the aperture of the aperture hole 5.

[0049] Please refer to Figure 1 and Figure 3 In this embodiment, the housing 1 includes a base 11 and a cover 12. The cover 12 is covered on the base 11, and the cover 12 and the base 11 are surrounded by a receiving cavity 13. The rotating member 2, the driving member 3 and the plurality of blades 4 are all located in the receiving cavity 13, so that the various components in the receiving cavity 13 can be protected by the cover 12. A first light-transmitting hole 121 is provided on the cover 12, and a second light-transmitting hole 111 is provided on the base 11. The first light-transmitting hole 121 and the second light-transmitting hole 111 are respectively located on both sides of the aperture hole 5, and the first light-transmitting hole 121 and the second light-transmitting hole 111 are both opposite to the aperture hole 5. Among them, the aperture diameter of the first light-transmitting hole 121 and the aperture diameter of the second light-transmitting hole 111 are not less than the maximum aperture diameter of the aperture hole 5.

[0050] Please refer to Figure 3 In this embodiment, the rotating member 2 is a rotor, and the driving member 3 includes a coil 31 fixedly mounted on the base 11, a first magnet 32 ​​fixedly mounted on the rotating member 2, and a second magnet 33 fixedly mounted on the rotating member 2. When the coil 31 is energized, the first magnet 32 ​​and the second magnet 33 will generate a tangential force along the circumferential direction of the rotating member 2, and under the action of the tangential force, the rotating member 2 can be driven to rotate relative to the housing 1. In other embodiments, the driving member 3 can also be replaced by an electric motor, etc.

[0051] It should be noted that the variable aperture may include one or more driving members 3, and the specific number of the driving members 3 may be selected according to actual needs. In this embodiment, a scheme in which the variable aperture includes two driving members 3 is exemplified. In other embodiments, the number of the driving members 3 may also be set to one or three or more.

[0052] Optionally, please continue to refer to Figure 3In this embodiment, the base 11 is provided with an annular boss 112, and the rotating member 2 is sleeved on the annular boss 112 and can rotate relative to the annular boss 112. Such a configuration can improve the rotation stability of the rotating member 2. The base 11 and the annular boss 112 can be integrally formed, or can be separately formed and connected by a connector, or connected by welding or other processes.

[0053] Optionally, please continue to refer to Figure 3 In this embodiment, the variable aperture further includes a plurality of balls 6, which are disposed between the rotating member 2 and the base 11, and the plurality of balls 6 are evenly distributed along the circumferential direction of the rotating member 2, and each ball 6 is simultaneously rollingly matched with the rotating member 2 and the base 11, so that the smoothness of the rotation of the rotating member 2 relative to the housing 1 can be improved. Preferably, the base 11 is provided with a rolling groove 114, and the ball 6 is partially located in the rolling groove 114, and the position of the ball 6 is limited by the rolling groove 114. The specific number of the balls 6 can be set according to actual needs. In this embodiment, a solution in which the number of balls 6 is four is exemplarily given.

[0054] Optionally, please continue to refer to Figure 3 In this embodiment, the base 11 is further provided with a first mounting groove 113 , and the coil 31 is embedded in the first mounting groove 113 , so that the coil 31 can be stably mounted on the base 11 .

[0055] Optionally, please continue to refer to Figure 3 In this embodiment, a second mounting groove 21 is provided on the rotating member 2 corresponding to each first magnet 32, and the first magnet 32 ​​is embedded in the corresponding second mounting groove 21. A third mounting groove 22 is provided on the rotating member 2 corresponding to each second magnet 33, and the second magnet 33 is embedded in the corresponding third mounting groove 22. In this way, it can be ensured that the first magnet 32 ​​and the second magnet 33 are stably installed on the rotating member 2.

[0056] Optionally, see Figure 2, one of the blade 4 and the housing 1 is provided with a guide groove 41, and the other is connected with a guide post 8, the guide post 8 is inserted into the guide groove 41, the outer diameter of the guide post 8 is not less than the groove width of the guide groove 41, and the guide post 8 is elastic, so that the guide post 8 and the guide groove 41 are interference fit, the guide post 8 produces elastic deformation to adapt to the groove width of the guide groove 41, and the guide post 8 can slide along the guide groove 41. Since there is no gap between the guide post 8 and the guide groove 41, when the aperture of the aperture hole 5 needs to be adjusted to a specified size, the sliding stroke of the guide post 8 along the guide groove 41 can be controlled, thereby making the stroke of the blade 4 relative to the housing 1 controllable; and, compared with the prior art, by making the guide post 8 elastic, when the guide post 8 slides along the guide groove 41, at each position in the length direction of the guide groove 41, the amount of elastic deformation of the guide post 8 can be kept stable and consistent, which significantly improves the control accuracy of each aperture size of the aperture hole 5.

[0057] Specifically, in this embodiment, a guide groove 41 is provided on the blade 4, and a guide column 8 is connected to the base 11. The guide column 8 can be integrally formed with the base 11, or can be separately provided. In other embodiments, a guide groove 41 can also be provided on the base 11, and a guide column 8 can be connected to the blade 4.

[0058] Specifically, in this embodiment, the outer diameter of the guide post 8 is greater than the groove width of the guide groove 41. In this embodiment, the groove width of the guide groove 41 is specifically 0.155 mm; the outer diameter of the guide post 8 is specifically 0.160 mm. In other embodiments, the notch of the guide groove 41 and the outer diameter of the guide post 8 can also be set according to actual needs, and the outer diameter of the guide post 8 can also be set to be equal to the groove width of the guide groove 41.

[0059] Optionally, see Figure 4 , the guide post 8 is cylindrical. At this time, the guide post 8 itself has elasticity, and the guide post 8 can be made of elastic material, such as elastomeric glue, rubber, etc.

[0060] As an alternative, see Figures 5 to 7, the guide post 8 can also be in the shape of a circular ring. That is, an elastic groove 81 is provided at the center of the guide post 8, and the guide post 8 is a thin-walled structure. When the guide post 8 is subjected to an extrusion force in its radial direction, the guide post 8 can produce elastic deformation and compress the elastic groove 81; and / or, the guide post 8 itself is made of an elastic material, and when the guide post 8 is subjected to an extrusion force in its radial direction, the guide post 8 itself can be elastically deformed. Preferably, in this embodiment, along the groove depth direction of the elastic groove 81, the notch end and the groove bottom end of the elastic groove 81 are respectively located on both sides of the guide groove 41, so as to ensure that the guide post 8 can normally undergo elastic deformation when subjected to the radial force given by the groove wall of the guide groove 41, so as to adapt to the groove width of the guide groove 41. It should be noted that the groove depth of the elastic groove 81 can be set according to actual needs. In this embodiment, the depth of the elastic groove 81 is 0.335 mm and the height of the guide column 8 is 0.390 mm. The wall thickness of the guide column 8 can also be set according to actual needs. In this embodiment, the depth of the elastic groove 81 is 0.06 mm.

[0061] As an alternative, see Figures 8 to 10, the guide column 8 includes a plurality of first elastic ribs 82, the plurality of first elastic ribs 82 are arranged in a circle, and any two adjacent first elastic ribs 82 are arranged at intervals, and each first elastic rib 82 is penetrated in the guide groove 41. In this way, the first elastic rib 82 is an elongated structure, and when it is subjected to the extrusion force given by the groove wall of the guide groove 41, it will produce elastic deformation to adapt to the groove width of the guide groove 41, and will not affect the sliding of the guide column 8 along the guide groove 41. It should be noted that the specific number of the first elastic ribs 82 included in the guide column 8 can be set according to actual needs, wherein, in this embodiment, the number of the first elastic ribs 82 included in the guide column 8 is four. Preferably, the guide column 8 is made of plastic material, such as PC material and ABS material. At this time, the first elastic rib 82 itself is relatively hard, and when it is subjected to the extrusion force given by the groove wall of the guide groove 41, it will bend elastically inward. Further preferably, the first elastic rib 82 is in an arc shape, and the first elastic rib 82 has an inner wall 821 and an outer wall 822. Along the groove width direction of the guide groove 41, the guide groove 41 has a first groove wall 411 and a second groove wall 412 arranged at intervals; the first groove wall 411 abuts and tangently matches the outer wall 822 of one of the first elastic ribs 82, and the second groove wall 412 abuts and tangently matches the outer wall 822 of another of the first elastic ribs 82. Such an arrangement can avoid the gap between the two first elastic ribs 82 from being opposite to the first groove wall 411 or the second groove wall 412, thereby ensuring that the guide column 8 can slide smoothly along the guide groove 41, and the two first elastic ribs 82 matching the first groove wall 411 or the second groove wall 412 are deformed at the same time to ensure that the stroke of the guide column 8 when sliding along the guide groove 41 is controllable, thereby ensuring the control accuracy of the aperture of the aperture hole 5.

[0062] Optionally, see Fig.11 , the blade 4 can only be provided with a guide groove 41, and the blade 4 is made of elastic materials such as rubber and eucalyptus, and the blade 4 can undergo a certain elastic deformation under the action of an external force. In this way, the guide column 8 is elastic and the blade 4 is also elastic. The cooperation of the two can reduce the elastic deformation of the guide column 8 to extend the service life of the guide column 8. It should be noted that the elastic coefficient of the blade 4 and the elastic coefficient of the guide column 8 can be equal, or the elastic coefficient of the blade 4 is slightly smaller than the elastic coefficient of the guide column 8, and both the guide column 8 and the blade 4 can undergo elastic deformation, so that the deformation is mainly concentrated on the guide column 8, thereby ensuring the aperture control accuracy of the aperture hole 5.

[0063] As an alternative, see Fig.12, the blade 4 is rotatably connected to the rotating member 2 through the rotating shaft 7, and a second deformation groove 42 is also provided on the blade 4, and the second deformation groove 42 is located on the side of the guide groove 41 away from the rotating shaft 7, or the second deformation groove 42 is located on the side of the guide groove 41 close to the rotating shaft 7; a second elastic rib 44 is formed between the second deformation groove 42 and the guide groove 41. The second elastic rib 44 is a slender structure, which has elasticity itself, and can undergo a certain elastic deformation under the extrusion of the guide column 8, and then the guide column 8 and the second elastic rib 44 cooperate with each other, and both undergo elastic deformation at the same time, which can reduce the elastic deformation of the guide column 8, so as to extend the service life of the guide column 8. It should be noted that the elastic coefficient of the second elastic rib 44 can be slightly smaller than the elastic coefficient of the guide column 8, so that the deformation is mainly concentrated on the guide column 8, so as to ensure the aperture control accuracy of the aperture hole 5. Specifically, in this embodiment, an exemplary solution is given in which the second deformation groove 42 is located on the side of the guide groove 41 close to the rotating shaft 7. In other embodiments, the second deformation groove 42 may also be located on the side of the guide groove 41 away from the rotating shaft 7.

[0064] Optionally, see Fig.13 , the blade 4 is also provided with a third deformation groove 43, the second deformation groove 42 is located on the side of the guide groove 41 close to the rotating shaft 7, and the third deformation groove 43 is located on the side of the guide groove 41 away from the rotating shaft 7; a third elastic rib 45 is formed between the third deformation groove 43 and the guide groove 41. The third elastic rib 45 is also a slender structure, and has elasticity itself, and can also undergo a certain elastic deformation under the extrusion of the guide column 8, and then the guide column 8, the second elastic rib 44 and the third elastic rib 45 cooperate with each other, and the three elastically deform at the same time, which can further reduce the elastic deformation of the guide column 8, so as to extend the service life of the guide column 8, and the second elastic rib 44 and the third elastic rib 45 elastically deform at the same time, so that the deformation amplitudes on both sides of the guide groove 41 tend to be consistent, so as to ensure that in the process of adjusting the aperture of the aperture hole 5, the travel of the guide column 8 relative to the guide groove 41 is controllable, thereby ensuring the aperture control accuracy of the aperture hole 5.

[0065] Optionally, please continue to refer to Fig.13 , the width of the second elastic rib 44 is equal to the width of the third elastic rib 45. In this way, the elastic coefficient of the third elastic rib 45 is equal to the elastic coefficient of the second elastic rib 44, so that the deformation is mainly concentrated on the guide column 8, ensuring the aperture control accuracy of the aperture hole 5.

[0066] Optionally, the third deformation groove 43 and the guide groove 41 are both arc-shaped, the second deformation groove 42 is arc-shaped or circular, and the centers of the guide groove 41, the second deformation groove 42 and the third deformation groove 43 coincide. This arrangement makes the deformation amplitudes on both sides of the guide groove 41 consistent along the extension direction of the guide groove 41, and can improve the smoothness of the sliding of the guide column 8 relative to the guide groove 41.

[0067] Furthermore, the guide groove 41, the second deformation groove 42 and the third deformation groove 43 cooperate with the guide column 8 to meet the movement trajectory of the blade 4, so the shapes of the guide groove 41, the second deformation groove 42 and the third deformation groove 43 are not limited to arc or circle. Even if the guide groove 41, the second deformation groove 42 and the third deformation groove 43 are all arc or circle, their centers may coincide with two of them, or none of them may coincide.

[0068] The present embodiment also provides a camera module, including an optical lens, a motor and the above-mentioned variable aperture, the variable aperture is arranged on the light incident side of the optical lens, and the relative position of the variable aperture and the optical lens is fixed, the motor is transmission-connected to the optical lens, and the motor is used to drive the optical lens to move along the center line direction of the optical lens.

[0069] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A variable aperture, comprising a housing (1), a rotating member (2) rotatably connected to the housing (1), a driving member (3) fixedly connected to the housing (1), and a plurality of blades (4), each of the blades (4) being rotatably connected to the rotating member (2), and each of the blades (4) being slidably connected to the housing (1), and the plurality of blades (4) being arranged to form an aperture hole (5) with adjustable aperture; characterized in that: One of the blade (4) and the shell (1) is provided with a guide groove (41), and the other of the blade (4) is connected with a guide column (8), the guide column (8) is inserted into the guide groove (41), the outer diameter of the guide column (8) is not less than the groove width of the guide groove (41), and the guide column (8) is elastic.

2. The variable aperture according to claim 1, characterized in that: The guide column (8) is in the shape of a cylinder, or the guide column (8) is in the shape of a ring.

3. The variable aperture according to claim 1, characterized in that: The guide column (8) comprises a plurality of first elastic ribs (82), the plurality of first elastic ribs (82) are arranged in a circle, any two adjacent first elastic ribs (82) are arranged at intervals, and each first elastic rib (82) is inserted into the guide groove (41).

4. The variable aperture according to claim 3, characterized in that: The first elastic rib (82) is in an arc shape, and has an inner wall (821) and an outer wall (822), and along the groove width direction of the guide groove (41), the guide groove (41) has a first groove wall (411) and a second groove wall (412) arranged at intervals; The first groove wall (411) abuts against and tangentially matches the outer side wall (822) of one of the first elastic ribs (82), and the second groove wall (412) abuts against and tangentially matches the outer side wall (822) of another of the first elastic ribs (82).

5. The variable aperture according to claim 3, characterized in that: The first elastic rib (82) is made of plastic material.

6. The variable aperture according to any one of claims 1 to 5, characterized in that: The blade (4) is rotatably connected to the rotating member (2) via a rotating shaft (7); a second deformation groove (42) is further provided on the blade (4); the second deformation groove (42) is located on a side of the guide groove (41) away from the rotating shaft (7); or the second deformation groove (42) is located on a side of the guide groove (41) close to the rotating shaft (7); A second elastic rib (44) is formed between the second deformation groove (42) and the guide groove (41).

7. The variable aperture according to claim 6, characterized in that: The blade (4) is further provided with a third deformation groove (43), the second deformation groove (42) is located on a side of the guide groove (41) close to the rotating shaft (7), and the third deformation groove (43) is located on a side of the guide groove (41) away from the rotating shaft (7); A third elastic rib (45) is formed between the third deformation groove (43) and the guide groove (41).

8. The variable aperture according to claim 7, characterized in that: The width of the second elastic rib (44) is equal to the width of the third elastic rib (45).

9. The variable aperture according to claim 7, characterized in that: The third deformation groove (43) and the guide groove (41) are both in arc shape, the second deformation groove (42) is in arc shape or circular shape, and the centers of the guide groove (41), the second deformation groove (42) and the third deformation groove (43) coincide.

10. A camera module, characterized in that: It comprises an optical lens, a motor and the variable aperture as described in any one of claims 1 to 9, wherein the variable aperture is arranged on the light incident side of the optical lens, and the relative position of the variable aperture and the optical lens is fixed, the motor is transmission-connected to the optical lens, and the motor is used to drive the optical lens to move along the center line direction of the optical lens.

Images