Aperture blade, variable aperture, camera module and electronic equipment

Abstract

The invention provides an aperture blade, a variable aperture, a camera module and electronic equipment. The aperture blade is provided with a first side edge used for defining an aperture; the first side edge comprises a first straight edge and a second straight edge which are connected, and an obtuse angle is formed between the first straight edge and the second straight edge. According to the scheme, the number of brightness levels obtained by adjusting the variable aperture can be increased, and the uniformity of incident light is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of camera technology, and in particular to an aperture blade, a variable aperture, a camera module and an electronic device. Background Art

[0002] As people's requirements for camera equipment continue to increase, camera equipment with variable aperture or electronic equipment with camera function continues to develop. The variable aperture can change the intensity of light entering the camera module with the help of the aperture formed by the aperture blades, thereby adjusting the camera effect.

[0003] In the related art, the variable aperture adjusts the shape or size of the formed aperture by controlling the movement positions of multiple blades, thereby adjusting the incident light intensity.

[0004] However, due to factors such as the size and shape of the blades or the available space of the variable aperture, the variable aperture can be adjusted to a smaller number of brightness levels, and the adjusted aperture shape may not be round enough, resulting in uneven light input. Summary of the invention

[0005] In view of this, the present disclosure provides an aperture blade, a variable aperture, a camera module and an electronic device, which can increase the number of brightness levels that can be adjusted by the variable aperture and improve the uniformity of incident light.

[0006] Specifically, the following technical solutions are included:

[0007] In a first aspect, the present disclosure provides an aperture blade, wherein the aperture blade has a first side edge for enclosing an aperture;

[0008] The first side includes a first straight side and a second straight side connected to each other, and an obtuse angle is formed between the first straight side and the second straight side.

[0009] Optionally, the thickness of the aperture blades ranges from 40 to 120 um.

[0010] Optionally, the thickness of the aperture blades is 55 um.

[0011] Optionally, the surface of the aperture blades is coated with a carbon layer.

[0012] Optionally, the aperture blades are made of polyimide.

[0013] In a second aspect, the present disclosure provides a variable aperture, comprising a plurality of aperture blades as described above.

[0014] Optionally, the number of the plurality of aperture blades is n, and the n aperture blades form an n-gonal aperture with a first diameter through the first straight edge in a first state, form a 2n-gonal aperture through the first straight edge and the second straight edge in a second state, and form an n-gonal aperture with a second diameter through the second straight edge in a third state, the first diameter is different from the second diameter, and n is an integer greater than or equal to 6.

[0015] Optionally, each of the aperture blades has a first fixed structure, and the variable aperture also includes a variable aperture base, and the variable aperture base has a second fixed structure. The first fixed structure cooperates with the second fixed structure so that the aperture blades are installed on the variable aperture base, and the aperture blades can rotate around the axis of the second fixed structure.

[0016] Optionally, the first fixing structure is a hole, and the second fixing structure is an axis, or the first fixing structure is an axis, and the second fixing structure is a hole; the axis passes through or extends into the hole.

[0017] Optionally, each of the aperture blades has a fixed portion and a movable portion connected to each other, the first fixed structure is located at the fixed portion, and the first side edge is a partial side edge of the movable portion;

[0018] The variable aperture base has a first installation position, the second fixing structure is located at the first installation position, the fixing portion is installed in the first installation position through the first fixing structure, and the movable portion is located outside the first installation position.

[0019] Optionally, the variable aperture base is a cylindrical structure, the first mounting position is a groove-shaped structure on an end surface of a side wall of the variable aperture base, and the first mounting position is connected to an inner wall of the variable aperture base;

[0020] The movable part has a first limiting part and a second limiting part. When the aperture blade moves to a maximum extent in the first direction, the first limiting part abuts against the inner wall of the variable aperture base; when the aperture blade moves to a maximum extent in the second direction, the second limiting part abuts against the inner wall of the variable aperture base.

[0021] Optionally, the fixing portion has an arc-shaped edge, and the first mounting position has an arc-shaped side wall.

[0022] Optionally, the variable aperture further includes a rotating assembly, the rotating assembly is installed inside the variable aperture base, is coaxial with the variable aperture base, and can rotate relative to the variable aperture base;

[0023] The rotating assembly includes a first driving structure, and the aperture blades have a second driving structure. The first driving structure cooperates with the second driving structure so that when the rotating assembly rotates relative to the variable aperture base, the aperture blades are driven to rotate relative to the axis of the second fixed structure.

[0024] Optionally, the first driving structure is a shaft and the second driving structure is a slot, or the first driving structure is a slot and the second driving structure is a shaft, and the shaft can move in the slot along an extension direction of the slot.

[0025] Optionally, the groove is a strip-shaped groove or an arc-shaped groove.

[0026] Optionally, the second driving structure is located at the first limiting portion, and the first limiting portion further includes a first avoiding portion;

[0027] The variable aperture further includes an aperture cover plate, which is mounted on the variable aperture base. The aperture cover plate has a first protruding piece protruding in a direction close to the variable aperture base, and the first protruding piece extends into an avoidance space formed by the first avoidance portion and the inner wall of the variable aperture base.

[0028] Optionally, the movable portion has a second avoidance portion, the second avoidance portion is located at an end of the aperture blade away from the fixed portion, and the second avoidance portion avoids the second driving structure of an adjacent aperture blade.

[0029] Optionally, the second avoidance portion is formed as an arc-shaped structure.

[0030] Optionally, the n aperture blades are divided into two stacked groups, each group includes n / 2 aperture blades uniformly distributed along the circumferential direction, and the aperture blades in different groups are arranged alternately with each other.

[0031] Optionally, the variable aperture further includes a rolling member, and the rolling member is located between the rotating assembly and the inner wall of the variable aperture base, and is in contact with the rotating assembly and the inner wall of the variable aperture base respectively.

[0032] Optionally, the rotating assembly includes a rotating body and a first magnetic member, the rotating body has a second mounting position on a side close to the variable aperture base, and the first magnetic member is installed in the second mounting position;

[0033] The variable aperture further includes a variable aperture coil, the side wall of the variable aperture base has a third mounting position, and the variable aperture coil is mounted in the third mounting position;

[0034] The variable aperture coil cooperates with the first magnetic member to drive the rotating assembly to rotate relative to the variable aperture base.

[0035] Optionally, the second mounting position is a groove structure with an opening toward the inner wall of the variable aperture base, and the groove bottom of the groove structure and the extension plane where the first magnetic member is located are inclined relative to the axis of the rotating body;

[0036] An extension plane where the variable aperture coil is located is parallel to an extension plane where the first magnetic member is located.

[0037] Optionally, the variable aperture further includes a second magnetic member, the second magnetic member is located at a side of the variable aperture coil away from the rotating assembly, and the second magnetic member and the first magnetic member are attracted to each other.

[0038] Optionally, the variable aperture further includes a circuit board, which is electrically connected to the variable aperture coil, and a second protrusion is provided on a side of the circuit board close to the variable aperture base, the second protrusion abuts against at least a portion of the variable aperture coil, so that at least a portion of the variable aperture coil is tilted toward a direction close to the rotating body.

[0039] Optionally, the variable aperture further comprises a gasket, the center of the gasket has a light entrance hole, and the center of the light entrance hole is aligned with the center of the aperture surrounded by the n aperture blades;

[0040] The n aperture blades form an aperture larger than the light entrance hole in a fourth state.

[0041] In a third aspect, the present disclosure provides a camera module, comprising a lens assembly and any one of the variable apertures as described above, wherein the variable aperture is installed on the light incident side of the lens assembly.

[0042] Optionally, the camera module further includes a zoom motor, the zoom motor includes a first spring plate, the variable aperture includes a circuit board, and the pins of the circuit board are connected to the first spring plate.

[0043] Optionally, the zoom motor further includes a motor bracket, a motor coil, a third magnetic member, a second spring sheet and a motor base;

[0044] The motor bracket carries the lens assembly, the first spring sheet is located on a side of the motor bracket close to the lens assembly, the second spring sheet is located on a side of the motor bracket away from the lens assembly, the motor coil is mounted on the motor bracket, the motor bracket is mounted on the motor base, the third magnetic component is mounted on the motor base, and the third magnetic component is opposite to the motor coil.

[0045] Optionally, the camera module further includes an optical image stabilization component, and the optical image stabilization component includes an optical image stabilization bracket, an optical image stabilization base, a memory alloy wire and a ball bearing;

[0046] The optical image stabilization bracket supports the zoom motor, the optical image stabilization base carries the optical image stabilization bracket, the ball is located between the optical image stabilization bracket and the optical image stabilization base, the memory alloy metal wire connects the optical image stabilization bracket and the optical image stabilization base, and can drive the optical image stabilization bracket to move relative to the optical image stabilization base after power is turned on.

[0047] In a fourth aspect, the present disclosure provides an electronic device, comprising any variable aperture as described above or any camera module as described above.

[0048] The disclosed embodiments provide an aperture blade, a variable aperture, a camera module and an electronic device. With the help of the first straight edge and the second straight edge in the first side edge of the aperture blade, multiple apertures can be realized: an aperture surrounded by the first straight edge only, an aperture surrounded by the second straight edge only, an aperture surrounded by the first straight edge and the second straight edge at the same time, etc. In this way, multiple different levels of incident light intensity can be achieved, and when the aperture is formed by the first straight edge and the second straight edge at the same time, the aperture has more sides and is thus more rounded, which can improve the uniformity of incident light and the photographic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0050] Figure 1 A schematic diagram of the structure of an aperture blade provided in an embodiment of the present disclosure;

[0051] Figure 2 A schematic diagram of an aperture formed by multiple aperture blades in a variable aperture provided by an embodiment of the present disclosure;

[0052] Figure 3 A schematic diagram of an exploded structure of a variable aperture and lens assembly provided in an embodiment of the present disclosure;

[0053] Figure 4 A partial structural schematic diagram of a variable aperture provided by an embodiment of the present disclosure;

[0054] Figure 5 A schematic cross-sectional view of a part of the structure of a variable aperture provided by an embodiment of the present disclosure;

[0055] Figure 6 A schematic diagram of the structure of a camera module provided in an embodiment of the present disclosure;

[0056] Figure 7An exploded schematic diagram of a zoom motor in a camera module provided by an embodiment of the present disclosure;

[0057] Figure 8 A schematic diagram of an exploded view of an optical image stabilization component in a camera module provided in an embodiment of the present disclosure.

[0058] The reference numerals in the figures represent respectively:

[0059] 1- Variable aperture;

[0060] 11-aperture blades; 111-first side edge; 1111-first straight edge; 1112-second straight edge; 1113-arc segment; 112-first fixing structure; 113-fixing portion; 114-movable portion; 1141-first limiting portion; 11411-first avoiding portion; 1142-second limiting portion; 1143-second avoiding portion; 115-second driving structure;

[0061] 12- variable aperture base; 121- second fixing structure; 122- first installation position; 123- third installation position;

[0062] 13-rotating assembly; 131-first driving structure; 132-rotating body; 1321-second mounting position; 13211-bottom of groove; 133-first magnetic member;

[0063] 14-aperture cover; 141-first protruding member;

[0064] 15- rolling element; 16- variable aperture coil; 17- second magnetic element;

[0065] 18-circuit board; 181-second protruding member;

[0066] 19-gasket; 191-light entry hole;

[0067] 2- Lens assembly;

[0068] 3-zoom motor; 31-first spring; 32-motor bracket; 33-motor coil; 34-third magnetic member; 35-second spring; 36-motor base;

[0069] 4-optical image stabilization component; 41-optical image stabilization bracket; 42-optical image stabilization base; 43-memory alloy metal wire; 44-ball bearing.

[0070] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0071] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0072] The orientation nouns involved in the embodiments of the present disclosure, such as "up", "down", "side", etc., are generally based on the orientation shown in the figure or the relative orientation relationship between the structures when the camera module or the electronic device is usually arranged, and these orientation nouns are used only to more clearly describe the relationship between the structures, not to describe the absolute orientation. When the camera module or the electronic device is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0073] Unless otherwise defined, all technical terms used in the embodiments of the present disclosure have the same meanings as commonly understood by those of ordinary skill in the art.

[0074] In order to make the technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0075] In a first aspect, an embodiment of the present disclosure provides an aperture blade 11. Figure 1 , the aperture blade 11 has a first side edge 111 for forming an aperture;

[0076] The first side 111 includes a first straight edge 1111 and a second straight edge 1112 connected to each other, and an obtuse angle is formed between the first straight edge 1111 and the second straight edge 1112 .

[0077] It should be noted that the “straight edge” in the present disclosure refers to an edge having at least one section extending substantially along a straight line.

[0078] Optionally, the thickness of the aperture blade 11 is in the range of 40-120um. Such a thickness range can ensure that the space required by the aperture blade is small. In a specific implementation, the specific thickness value of the aperture blade can be comprehensively considered based on factors such as the size of the aperture blade and the available space in the actual use scenario. Optionally, the thickness of the aperture blade 11 is 55um. Such a "cicada wing blade" can effectively improve the control accuracy of the subsequent aperture size and size, and effectively reduce the volume of the variable aperture.

[0079] Optionally, the surface of the aperture blade 11 is coated with a carbon layer. The carbon layer can ensure that the aperture blade is 100% opaque to ensure the subsequent shooting effect. In specific implementation, chemical vapor deposition, magnetron sputtering, physical vapor deposition and other processes can be selected to achieve carbon coating. Optionally, carbon coating can be performed on one or both sides of the aperture blade.

[0080] Optionally, the aperture blades 11 are made of polyimide, which can ensure that the aperture blades are resistant to high temperatures and are not easily deformed, thereby increasing the service life of the aperture blades.

[0081] In the disclosed embodiment, the first side edge of the aperture blades used to form the aperture includes a first straight edge and a second straight edge, and the first straight edge and the second straight edge are connected, and then when the aperture is formed by using multiple aperture blades, at least the following multiple apertures can be obtained: an aperture formed only by using the first straight edge, an aperture formed only by using the second straight edge, an aperture formed by using both the first straight edge and the second straight edge, etc. In this way, multiple different levels of incident light intensity can be achieved, and when the aperture is formed by using both the first straight edge and the second straight edge, the aperture has more sides and is more rounded, which can improve the uniformity of incident light and the photographic effect.

[0082] In a second aspect, the present disclosure provides a variable aperture. Figure 2-3 The variable aperture 1 includes a plurality of aperture blades 11 as described above.

[0083] In the disclosed embodiment, the variable aperture can be formed by using the aforementioned multiple aperture blades to form at least the following apertures: an aperture formed only by using the first straight edge, an aperture formed only by using the second straight edge, an aperture formed by using both the first straight edge and the second straight edge, etc. In this way, a variety of different light intensity levels can be achieved, and when the aperture is formed by using both the first straight edge and the second straight edge, the aperture has more sides and is more rounded, which can improve the uniformity of light input and the photographic effect.

[0084] Optional, reference Figure 2 The number of the plurality of aperture blades 11 is n, and the n aperture blades 11 in the first state form an n-gonal aperture with a first diameter through the first straight edge 1111 (eg Figure 2 (d)), in the second state, the first straight edge 1111 and the second straight edge 1112 form a 2n-gonal aperture (such as Figure 2 (c)), in the third state, the second straight edge 1112 forms an n-gonal aperture with a second diameter (such as Figure 2 (b)), the first diameter is different from the second diameter, and n is an integer greater than or equal to 6 ( Figure 2 The aperture effect when n is 6 is shown in FIG.

[0085] That is, by adjusting the position of the blades, apertures of different diameters can be achieved, a variety of light entry effects can be achieved, and the photographic effect can be enriched.

[0086] It should be noted that the obtuse angle between the first straight side and the second straight side can be determined according to the number of aperture blades in the variable aperture. For example, when the variable aperture is realized by six aperture blades in the variable aperture, a dodecagonal aperture can be formed, and the angle can be about 150 degrees (each inner angle of a regular dodecagon is 150 degrees); when the variable aperture is realized by nine aperture blades, the angle can be about 160 degrees (each inner angle of a regular octagon is 160 degrees); and so on. The number of n can be adjusted according to the space and actual shooting requirements. For example, when the available space is large and the actual shooting requirements are high, a larger n value can be appropriately used.

[0087] In some embodiments, reference Figure 1 and Figure 3 Each aperture blade 11 has a first fixed structure 112, and the variable aperture also includes a variable aperture base 12, and the variable aperture base 12 has a second fixed structure 121. The first fixed structure 112 cooperates with the second fixed structure 121, so that the aperture blade 11 is installed on the variable aperture base 12, and the aperture blade 11 can rotate around the axis of the second fixed structure 121.

[0088] Based on the above arrangement, it can be ensured that each aperture blade rotates only around a fixed axis, thereby ensuring that subsequent aperture blades can effectively enclose an aperture, and the aperture blades are relatively fixed on the variable aperture base, which can ensure that the aperture blades do not easily detach, thereby ensuring the working stability of the variable aperture.

[0089] Optional, reference Figure 1 and Figure 3 The first fixing structure 112 is a hole, and the second fixing structure 121 is an axis, or the first fixing structure 112 is an axis, and the second fixing structure 121 is a hole; the axis passes through or extends into the hole. That is, the aperture blades are installed by means of a simple structure of the axis and the hole, which has low cost and good reliability.

[0090] In some embodiments, reference Figure 1 and Figure 4 , each aperture blade 11 has a connected fixed portion 113 and a movable portion 114 , the first fixed structure 112 is located at the fixed portion 113 , and the first side edge 111 is a partial side edge of the movable portion 114 ;

[0091] The variable aperture base 12 has a first installation position 122 , the second fixing structure 121 is located at the first installation position 122 , the fixing portion 113 is installed in the first installation position 122 through the first fixing structure 112 , and the movable portion 114 is located outside the first installation position 122 .

[0092] In the present embodiment, the fixed portion of the aperture blade is installed in the first installation position of the variable aperture base, and the fixed portion is limited to move only in a local small space, while the movable portion is located outside the first installation position and can achieve a larger range of movement. On the one hand, it can achieve the fixation of the rotation center of the aperture blade with the help of a small space, thereby improving the efficiency of space utilization. On the other hand, it can achieve a greater degree of freedom for the blades, realize a more diverse aperture, and enrich the photographic effect.

[0093] Optional, reference Figure 3 and Figure 4 The variable aperture base 12 is a cylindrical structure, the first mounting position 122 is a groove-shaped structure on the end surface of the side wall of the variable aperture base 12, and the first mounting position 122 is connected to the inner wall of the variable aperture base 12;

[0094] Combination Figure 1 and Figure 4 The movable portion 114 has a first limiting portion 1141 and a second limiting portion 1142. When the aperture blade 11 moves to a maximum extent in the first direction, the first limiting portion 1141 abuts against the inner wall of the variable aperture base 12; when the aperture blade 11 moves to a maximum extent in the second direction, the second limiting portion 1142 abuts against the inner wall of the variable aperture base 12.

[0095] It should be noted that the first direction and the second direction here are two opposite directions in which the aperture blades can rotate. With the above arrangement, on the one hand, it can ensure that the movable part of the aperture blade does not need to occupy the extra thickness of the variable aperture, which is conducive to the miniaturization of the camera module; on the other hand, the movable part has the first limiting part and the second limiting part, which can effectively limit the movable range of the aperture blade, thereby improving the effectiveness of the formed aperture.

[0096] Optional, reference Figure 1 and Figure 4 The fixing portion 113 has an arc-shaped edge, and the first mounting position 122 has an arc-shaped side wall. With the above arc-shaped structure, the smoothness of the movement of the fixing portion 113 in the first mounting position 122 can be effectively improved.

[0097] In some embodiments, reference Figure 3 The variable aperture further includes a rotating assembly 13, which is installed inside the variable aperture base 12 and is coaxial with the variable aperture base 12, and the rotating assembly 13 can rotate relative to the variable aperture base 12;

[0098] Combination Figure 1 , Figure 3 and Figure 4The rotating assembly 13 includes a first driving structure 131, and the aperture blade 11 has a second driving structure 115. The first driving structure 131 cooperates with the second driving structure 115 so that when the rotating assembly 13 rotates relative to the variable aperture base 12, the aperture blade 11 is driven to rotate relative to the axis of the second fixed structure 121.

[0099] This embodiment provides an implementation method of driving the aperture blades to move by means of a rotating assembly. In this implementation method, multiple aperture blades can be driven by the same rotating assembly to achieve synchronous rotation, which is beneficial to improving the roundness of the aperture. It should be noted that the number of the first driving structures is equal to the number of the aperture blades, so that all the aperture blades can be driven simultaneously.

[0100] Optional, reference Figure 4 The first driving structure 131 is a shaft and the second driving structure 115 is a slot, or the first driving structure 131 is a slot and the second driving structure 115 is a shaft, and the shaft can move in the slot along the extending direction of the slot. That is, the aforementioned synchronous driving effect can be achieved by simply cooperating between the slot and the shaft.

[0101] Optionally, the groove is a strip groove or an arc groove. The direction and extension length of the groove can be used to limit the driving efficiency and driving amplitude of the rotating component on the aperture blades. In implementation, the direction and extension length of the groove can be adjusted according to actual needs.

[0102] Optional, reference Figure 1 and 3 , the second driving structure 115 is located at the first limiting portion 1141, and the first limiting portion 1141 further includes a first avoiding portion 11411;

[0103] The variable aperture also includes an aperture cover 14, which is installed on the variable aperture base 12. The aperture cover 14 has a first protruding piece 141 protruding in a direction close to the variable aperture base 12, and the first protruding piece 141 extends into an avoidance space formed by the first avoidance portion 11411 and the inner wall of the variable aperture base 12.

[0104] In this embodiment, the aperture cover can achieve the encapsulation of the light-entering side of the variable aperture to prevent dust and the like from entering. With the help of the first protruding piece, the aperture cover can be more stably installed on the variable aperture base. The first avoidance portion is provided on the aperture blade to avoid the first protruding piece, which can effectively improve the space utilization efficiency of the variable aperture, thereby helping to reduce the space volume of the variable aperture and the camera module.

[0105] In some embodiments, in combination Figure 1 and Figure 4The movable portion 114 has a second avoidance portion 1143, which is located at one end of the aperture blade 11 away from the fixed portion 113, and the second avoidance portion 1143 avoids the second driving structure 115 of the adjacent aperture blade 11. This ensures that any two adjacent aperture blades will not hinder each other's movement, thereby ensuring the working effect of the variable aperture.

[0106] Optional, reference Figure 1 The second avoiding portion 1143 is formed into an arc structure. Such a configuration can ensure that the length of the first straight edge 1111 can be longer, which is conducive to realizing apertures of various shapes.

[0107] In some embodiments, the n aperture blades 11 are divided into two stacked groups, each group includes n / 2 aperture blades 11 evenly distributed along the circumference, and the aperture blades 11 in different groups are arranged alternately. Based on the above arrangement, the thickness space required for the aperture blades can be effectively reduced, which is conducive to the miniaturization of the variable aperture or camera module.

[0108] In some embodiments, reference Figure 3 The variable aperture further includes a rolling member 15, which is located between the rotating assembly 13 and the inner wall of the variable aperture base 12, and is respectively in contact with the rotating assembly 13 and the inner wall of the variable aperture base 12. With the help of the rolling member 15, the friction resistance when the rotating assembly rotates relative to the variable aperture base can be effectively reduced, the rotation efficiency of the rotating assembly can be improved, and the switching efficiency of different aperture effects can be improved.

[0109] In some embodiments, reference Figure 3 The rotating assembly 13 includes a rotating body 132 and a first magnetic member 133. The rotating body 132 has a second mounting position 1321 on one side close to the variable aperture base 12. The first magnetic member 133 is installed in the second mounting position 1321.

[0110] The variable aperture further includes a variable aperture coil 16. The side wall of the variable aperture base 12 has a third mounting position 123. The variable aperture coil 16 is mounted in the third mounting position 123.

[0111] The variable aperture coil 16 cooperates with the first magnetic member 133 to drive the rotating assembly 13 to rotate relative to the variable aperture base 12 .

[0112] In this embodiment, the rotating assembly is equivalent to the rotor, and the variable aperture base acts as the stator. The driving of the rotating assembly is achieved by means of electromagnetic induction, which is beneficial to simplifying the structure of the variable aperture and improving the working efficiency of the variable aperture.

[0113] In some embodiments, in combination Figure 3 and Figure 5The second mounting position 1321 is a groove structure with an opening toward the inner wall of the variable aperture base 12 , and the groove bottom 13211 of the groove structure and the extension plane where the first magnetic member 133 is located are inclined relative to the axis of the rotating body 132 ;

[0114] The extension plane where the variable aperture coil 16 is located is parallel to the extension plane where the first magnetic member 133 is located.

[0115] In this embodiment, the groove bottom of the second installation position and the first magnetic member are both inclined relative to the axis of the rotating body, so that the thickness of the variable aperture can be significantly reduced, which is conducive to achieving a thin and light variable aperture. At the same time, the variable aperture coil is arranged parallel to the first magnetic member, which can ensure the driving effect of the rotating component and thus ensure the switching effect of the aperture.

[0116] In some embodiments, reference Figure 3 The variable aperture also includes a second magnetic member 17, which is located on the side of the variable aperture coil 16 away from the rotating assembly 13, and the second magnetic member 17 attracts the first magnetic member 133. With the magnetic attraction effect between the first magnetic member and the second magnetic member, it can be ensured that the rotating assembly always "presses" the coil on the inner wall of the variable aperture base during rotation, so that the driving force received by the rotating assembly is always large, and the driving effect is relatively stable.

[0117] In some embodiments, reference Figure 3 The variable aperture further includes a circuit board 18, the circuit board 18 is electrically connected to the variable aperture coil 16, and the circuit board 18 has a second protrusion 181 on one side close to the variable aperture base 12, the second protrusion 181 abuts against at least part of the variable aperture coil 16, so that at least part of the variable aperture coil 16 is tilted toward the direction close to the rotating body 132. Optionally, the circuit board can be a flexible circuit board.

[0118] In this embodiment, the variable aperture coil can be powered by the circuit board to achieve the driving effect on the rotating component. At the same time, the circuit board also has a second protruding piece, and the variable aperture coil can be kept in a state of being tilted toward the rotating body by means of the second protruding piece, thereby ensuring the driving effect of the coil on the rotating component.

[0119] In some embodiments, reference Figure 3 The variable aperture further includes a gasket 19, the center of the gasket 19 has a light entrance hole 191, and the center of the light entrance hole 191 is aligned with the center of the aperture surrounded by the n aperture blades 11;

[0120] In the fourth state, the n aperture blades 11 form an aperture larger than the light entrance hole 191 (refer to Figure 2 (a)).

[0121] Based on the above settings, it can be ensured that when the maximum amount of light input is required, it can be achieved by directly controlling the aperture blades not to block the light entrance hole of the gasket, and the light entrance hole can be a relatively standard circle, and the light input is more uniform.

[0122] Optional, reference Figure 1 , the first side edge 111 also includes an arc segment 1113, the first straight edge 1111 is connected to the side edge of the second avoidance portion 1143, and the second straight edge 1112 is connected to the arc segment 1113 on the side away from the first straight edge 1111. The diameter corresponding to the arc segment is greater than the diameter of the light entrance hole of the gasket. Furthermore, when it is necessary to directly use the gasket to achieve the maximum amount of light entering, the arc segment is made to form an "aperture", and at this time, the "aperture" can be conformed to the light entrance hole of the gasket and will not block the light entrance hole.

[0123] In summary, the variable aperture provided by the embodiment of the present disclosure can realize apertures of various sizes and shapes, and the light input can be more uniform, which can improve the photographic effect. At the same time, with the cooperation of the rotating assembly and various components in the variable aperture base, the movement of the aperture blades is more orderly and efficient, which can improve the working stability, reliability and efficiency of the variable aperture.

[0124] In a third aspect, the present disclosure provides a camera module. Figure 6 The camera module includes a lens assembly 2 and any variable aperture 1 as described above, and the variable aperture 1 is installed on the light incident side of the lens assembly 2.

[0125] In the disclosed embodiment, the camera module can adjust the light intensity entering the lens assembly by means of the aforementioned variable aperture, and the variable aperture can form at least the following apertures by means of the aforementioned multiple aperture blades: an aperture formed only by means of the first straight edge, an aperture formed only by means of the second straight edge, an aperture formed by means of both the first straight edge and the second straight edge, etc. In this way, a variety of different levels of incident light intensity can be achieved, and when the aperture is formed by means of both the first straight edge and the second straight edge, the aperture has more sides and is more rounded, which can improve the uniformity of incident light and the photographic effect.

[0126] refer to Figure 2 (d) In some embodiments, when the variable aperture is formed into an n-gon aperture only by the first straight edge 1111, the aperture diameter is very small, and the camera module can be used to shoot starbursts with a good shooting effect. In addition, the size of the first straight edge 1111 involved in forming the aperture can be controlled to be smaller, so that the size of the aperture is smaller, and a better starburst shooting effect can be achieved.

[0127] It should be noted that in the above description, the aperture size switching principle of the variable aperture is only exemplified to make it easier to understand. Figure 2Several typical aperture shapes are shown. In fact, the aperture can be infinitely adjusted with the help of the variable aperture in the present disclosure. That is, by precisely controlling the relative rotation amplitude between the variable aperture base and the rotating assembly in the variable aperture, the movement step length of each aperture blade can be very small, thereby achieving the following: Figure 2 There are many types of apertures, including the aperture shapes shown, which is more friendly for scenes with higher shooting requirements.

[0128] For example, when shooting a video, the lighting effect of the scene or picture being shot may change gradually or suddenly. The variable aperture provided in the embodiment of the present disclosure can adjust the aperture size and shape in real time, achieve ultra-high exposure flexibility, automatically adapt to changes in light, and achieve better shooting effects.

[0129] In some embodiments, reference Figure 6 and 7 The camera module further includes a zoom motor 3, the zoom motor 3 includes a first spring 31, and the variable aperture 1 includes a circuit board 18, and the pins of the circuit board 18 are connected to the first spring 3131. That is, the circuit board of the variable aperture is powered by the first spring of the zoom motor, and then there is no need to set a lead wire specifically for the variable aperture inside the camera module, which can improve the overall space utilization efficiency of the camera module and reduce the complexity of the camera module.

[0130] In some embodiments, reference Figure 7 , the zoom motor 3 further includes a motor bracket 32, a motor coil 33, a third magnetic member 34, a second spring piece 35 and a motor base 36;

[0131] The motor bracket 32 ​​supports the lens assembly 2, the first spring piece 31 is located on the side of the motor bracket 32 ​​close to the lens assembly 2, the second spring piece 35 is located on the side of the motor bracket 32 ​​away from the lens assembly 2, the motor coil 33 is installed on the motor bracket 32, the motor bracket 32 ​​is installed on the motor base 36, the third magnetic part 34 is installed on the motor base 36, and the third magnetic part 34 is opposite to the motor coil 33.

[0132] In this embodiment, the zoom motor can use the electromagnetic induction between the third magnetic part and the motor coil to drive the motor bracket to move, and the motor bracket can drive the lens assembly to extend and retract, thereby achieving zooming. Optionally, the first spring clip and the second spring clip can connect the motor bracket and the motor base to provide the motor bracket with freedom of movement in the z direction (the direction close to or away from the variable aperture cover) relative to the motor base; the motor coil can be energized with the help of the second spring clip, and cooperate with the third magnetic part to provide the motor bracket with a driving force in the z direction, so that the motor bracket overcomes the elastic force of the first spring clip or the second spring clip and moves along the z direction. In this way, the camera module provided in this embodiment can achieve automatic zoom. The automatic zoom function combined with the aperture size switching function described in the aforementioned embodiment can make the camera module have a better camera effect.

[0133] In some embodiments, in combination Figure 6 and Figure 8 The camera module further includes an optical image stabilization component 4, which includes an optical image stabilization bracket 41, an optical image stabilization base 42, a memory alloy wire 43 and a ball 44;

[0134] The optical image stabilization bracket 41 supports the zoom motor 3, the optical image stabilization base 42 carries the optical image stabilization bracket 41, the ball 44 is located between the optical image stabilization bracket 41 and the optical image stabilization base 42, and the memory alloy metal wire 43 connects the optical image stabilization bracket 41 and the optical image stabilization base 42, and can drive the optical image stabilization bracket 41 to move relative to the optical image stabilization base 42 after power is turned on.

[0135] In this embodiment, the length of the memory alloy wire can change after power is turned on, so that the optical image stabilization bracket can be pulled by the memory alloy wire (SMA) and move relative to the optical image stabilization base in the plane where the bracket is located, thereby achieving an anti-shake effect. At the same time, there is a ball between the optical image stabilization bracket and the optical image stabilization base, which can effectively reduce the resistance of the optical image stabilization bracket when it moves relative to the optical image stabilization base, thereby improving the anti-shake effect.

[0136] To sum up, the camera module provided by the embodiment of the present disclosure can not only achieve a variety of aperture effects with the help of the aforementioned variable aperture, but also realize automatic zoom of the lens with the help of a zoom motor, and realize automatic anti-shake with the help of an optical anti-shake component, thereby effectively improving the camera effect.

[0137] In a fourth aspect, the present disclosure provides an electronic device, which includes any variable aperture as described above or any camera module as described above.

[0138] The electronic device provided by the embodiment of the present disclosure can achieve various aperture effects with the help of the aforementioned variable aperture: an aperture formed only by the first straight edge of the aperture blades, an aperture formed only by the second straight edge of the aperture blades, an aperture formed by both the first straight edge and the second straight edge of the aperture blades, etc. In this way, a variety of different levels of incident light intensity can be achieved, and when the aperture is formed by both the first straight edge and the second straight edge, the aperture has more sides and is more rounded, which can improve the uniformity of incident light and improve the photographic effect of the electronic device.

[0139] In the present disclosure, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.

[0140] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the present disclosure disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only.

[0141] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An aperture blade, characterized in that: The aperture blades (11) have a first side edge (111) for forming an aperture; The first side edge (111) comprises a first straight edge (1111) and a second straight edge (1112) which are connected to each other, and an obtuse angle is formed between the first straight edge (1111) and the second straight edge (1112).

2. The aperture blade according to claim 1, characterized in that: The thickness of the aperture blades (11) ranges from 40 to 120 μm.

3. The aperture blade according to claim 2, characterized in that: The thickness of the aperture blades (11) is 55 um.

4. The aperture blade according to any one of claims 1 to 3, characterized in that: The surfaces of the aperture blades (11) are plated with a carbon layer.

5. The aperture blade according to any one of claims 1 to 3, characterized in that: The material of the aperture blades (11) is polyimide.

6. A variable aperture, characterized in that: The invention comprises a plurality of aperture blades (11) according to any one of claims 1 to 5.

7. The variable aperture according to claim 6, characterized in that: The number of the plurality of aperture blades (11) is n, and the n aperture blades (11) are surrounded by the first straight edge (1111) to form an n-gonal aperture with a first diameter in a first state, by the first straight edge (1111) and the second straight edge (1112) to form a 2n-gonal aperture in a second state, and by the second straight edge (1112) to form an n-gonal aperture with a second diameter in a third state, wherein the first diameter is different from the second diameter, and n is an integer greater than or equal to 6.

8. The variable aperture according to claim 7, characterized in that: Each of the aperture blades (11) has a first fixing structure (112); the variable aperture further comprises a variable aperture base (12); the variable aperture base (12) has a second fixing structure (121); the first fixing structure (112) cooperates with the second fixing structure (121) so that the aperture blade (11) is mounted on the variable aperture base (12), and the aperture blade (11) can rotate around the axis of the second fixing structure (121).

9. The variable aperture according to claim 8, characterized in that: The first fixing structure (112) is a hole, and the second fixing structure (121) is an axis, or the first fixing structure (112) is an axis, and the second fixing structure (121) is a hole; the axis passes through or extends into the hole.

10. The variable aperture according to claim 8, characterized in that: Each of the aperture blades (11) has a connected fixed portion (113) and a movable portion (114), the first fixed structure (112) is located on the fixed portion (113), and the first side edge (111) is a partial side edge of the movable portion (114); The variable aperture base (12) has a first mounting position (122), the second fixing structure (121) is located at the first mounting position (122), the fixing portion (113) is installed in the first mounting position (122) through the first fixing structure (112), and the movable portion (114) is located outside the first mounting position (122).

11. The variable aperture according to claim 10, characterized in that: The variable aperture base (12) is a cylindrical structure, the first mounting position (122) is a groove-shaped structure on the end surface of the side wall of the variable aperture base (12), and the first mounting position (122) is connected to the inner wall of the variable aperture base (12); The movable portion (114) comprises a first limiting portion (1141) and a second limiting portion (1142); when the aperture blade (11) moves to a maximum extent in a first direction, the first limiting portion (1141) abuts against an inner wall of the variable aperture base (12); and when the aperture blade (11) moves to a maximum extent in a second direction, the second limiting portion (1142) abuts against an inner wall of the variable aperture base (12).

12. The variable aperture according to claim 11, characterized in that: The fixing portion (113) has an arc-shaped edge, and the first mounting position (122) has an arc-shaped side wall.

13. The variable aperture according to claim 11, characterized in that: The variable aperture further comprises a rotating assembly (13), wherein the rotating assembly (13) is installed inside the variable aperture base (12) and is coaxial with the variable aperture base (12), and the rotating assembly (13) can rotate relative to the variable aperture base (12); The rotating assembly (13) comprises a first driving structure (131), and the aperture blade (11) has a second driving structure (115). The first driving structure (131) cooperates with the second driving structure (115) so that when the rotating assembly (13) rotates relative to the variable aperture base (12), the aperture blade (11) is driven to perform a rotational motion relative to the axis of the second fixed structure (121).

14. The variable aperture according to claim 13, characterized in that: The first driving structure (131) is an axis and the second driving structure (115) is a groove, or the first driving structure (131) is a groove and the second driving structure (115) is an axis, and the axis can move in the groove along the extension direction of the groove.

15. The variable aperture according to claim 14, characterized in that: The groove is a strip-shaped groove or an arc-shaped groove.

16. The variable aperture according to claim 13, characterized in that: The second driving structure (115) is located at the first limiting portion (1141), and the first limiting portion (1141) further includes a first avoiding portion (11411); The variable aperture further comprises an aperture cover plate (14), wherein the aperture cover plate (14) is mounted on the variable aperture base (12), and the aperture cover plate (14) comprises a first protruding piece (141) protruding in a direction close to the variable aperture base (12), and the first protruding piece (141) extends into an avoidance space formed by the first avoidance portion (11411) and the inner wall of the variable aperture base (12).

17. The variable aperture according to any one of claims 10 to 16, characterized in that: The movable portion (114) has a second avoidance portion (1143), the second avoidance portion (1143) is located at an end of the aperture blade (11) away from the fixed portion (113), and the second avoidance portion (1143) avoids the second driving structure (115) of the adjacent aperture blade (11).

18. The variable aperture according to claim 17, characterized in that: The second avoidance portion (1143) is formed as an arc-shaped structure.

19. The variable aperture according to any one of claims 7 to 16 and 18, characterized in that: The n aperture blades (11) are divided into two stacked groups, each group includes n / 2 aperture blades (11) uniformly distributed along the circumferential direction, and the aperture blades (11) in different groups are arranged alternately with each other.

20. The variable aperture according to any one of claims 13 to 16, characterized in that: The variable aperture further comprises a rolling element (15), wherein the rolling element (15) is located between the rotating assembly (13) and the inner wall of the variable aperture base (12), and is in contact with the rotating assembly (13) and the inner wall of the variable aperture base (12) respectively.

21. The variable aperture according to any one of claims 13 to 16, characterized in that: The rotating assembly (13) comprises a rotating body (132) and a first magnetic member (133); a side of the rotating body (132) close to the variable aperture base (12) has a second mounting position (1321); and the first magnetic member (133) is mounted in the second mounting position (1321); The variable aperture further comprises a variable aperture coil (16); the side wall of the variable aperture base (12) has a third mounting position (123); and the variable aperture coil (16) is mounted in the third mounting position (123); The variable aperture coil (16) cooperates with the first magnetic member (133) to drive the rotating assembly (13) to rotate relative to the variable aperture base (12).

22. The variable aperture according to claim 21, characterized in that: The second mounting position (1321) is a groove structure with an opening toward the inner wall of the variable aperture base (12), and the groove bottom (13211) of the groove structure and the extension plane where the first magnetic member (133) is located are inclined relative to the axis of the rotating body (132); The extension plane where the variable aperture coil (16) is located is parallel to the extension plane where the first magnetic member (133) is located.

23. The variable aperture according to claim 21, characterized in that: The variable aperture further comprises a second magnetic member (17), the second magnetic member (17) being located on a side of the variable aperture coil (16) away from the rotating assembly (13), and the second magnetic member (17) and the first magnetic member (133) being attracted to each other.

24. The variable aperture according to claim 22, characterized in that: The variable aperture further comprises a circuit board (18), wherein the circuit board (18) is electrically connected to the variable aperture coil (16), and a second protrusion (181) is provided on a side of the circuit board (18) close to the variable aperture base (12), wherein the second protrusion (181) abuts against at least a portion of the variable aperture coil (16), so that at least a portion of the variable aperture coil (16) is tilted toward a direction close to the rotating body (132).

25. The variable aperture according to any one of claims 7 to 16, 18 and 22 to 24, characterized in that: The variable aperture further comprises a gasket (19), the center of the gasket (19) having a light entrance hole (191), and the center of the light entrance hole (191) is aligned with the center of the aperture surrounded by the n aperture blades (11); In the fourth state, the n aperture blades (11) form an aperture whose size is larger than the light entrance hole (191).

26. A camera module, characterized in that: It comprises a lens assembly (2) and a variable aperture (1) as claimed in any one of claims 6 to 25, wherein the variable aperture (1) is installed on the light incident side of the lens assembly (2).

27. The camera module according to claim 26, characterized in that: The camera module also includes a zoom motor (3), the zoom motor (3) includes a first spring piece (31), the variable aperture (1) includes a circuit board (18), and the pins of the circuit board (18) are connected to the first spring piece (31) (31).

28. The camera module according to claim 27, characterized in that: The zoom motor (3) further comprises a motor bracket (32), a motor coil (33), a third magnetic member (34), a second spring sheet (35) and a motor base (36); The motor bracket (32) carries the lens assembly (2), the first spring piece (31) is located on a side of the motor bracket (32) close to the lens assembly (2), the second spring piece (35) is located on a side of the motor bracket (32) away from the lens assembly (2), the motor coil (33) is mounted on the motor bracket (32), the motor bracket (32) is mounted on the motor base (36), the third magnetic component (34) is mounted on the motor base (36), and the third magnetic component (34) is opposite to the motor coil (33).

29. The camera module according to claim 28, characterized in that: The camera module also includes an optical anti-shake component (4), and the optical anti-shake component (4) includes an optical anti-shake bracket (41), an optical anti-shake base (42), a memory alloy metal wire (43) and a ball (44); The optical anti-shake bracket (41) supports the zoom motor (3), the optical anti-shake base (42) carries the optical anti-shake bracket (41), the ball (44) is located between the optical anti-shake bracket (41) and the optical anti-shake base (42), and the memory alloy metal wire (43) connects the optical anti-shake bracket (41) and the optical anti-shake base (42), and can drive the optical anti-shake bracket (41) to move relative to the optical anti-shake base (42) after power is turned on.

30. An electronic device, characterized in that: It comprises a variable aperture as described in any one of claims 6-25 or a camera module as described in any one of claims 26-29.

Images