Variable aperture, camera module and electronic equipment

Abstract

The invention discloses a variable aperture, and belongs to the technical field of camera shooting. The variable aperture comprises a blade assembly, a rotor and a stator, the interior of the stator is hollow, and the rotor is rotatably arranged in the interior of the stator; the blade assembly is rotationally connected to the stator and slidably connected to the rotor. The blade assembly comprises a plurality of blade sets, each blade set comprises at least three blades which are located on different layers and stacked in a staggered mode, the adjacent blades of every two adjacent blade sets are partially stacked, and light holes are defined by the sides, away from the stator, of all the blades included in the blade sets. The variable aperture can increase the luminous flux entering the variable aperture, thereby improving the imaging quality.

Description

Technical Field

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

[0002] At present, electronic devices are usually provided with a camera module to facilitate users to perform shooting operations. By changing the size of the aperture hole of the variable aperture, the light flux entering the variable aperture can be adjusted, thereby improving the image quality. In the related art, the variable aperture includes a rotating component and a plurality of blades. When the rotating component rotates, the rotating component drives the plurality of blades to open and close. However, the light inlet formed by the plurality of blades currently limits the light flux of the variable aperture, thereby affecting the image quality. Summary of the invention

[0003] In view of this, the present application provides a variable aperture, a camera module and an electronic device, which can increase the light flux entering the variable aperture, thereby improving the imaging quality.

[0004] Specifically, the following technical solutions are included:

[0005] In a first aspect, an embodiment of the present application provides a variable aperture, the variable aperture comprising: a blade assembly, a mover, and a stator;

[0006] The interior of the stator is hollow, and the mover is rotatably arranged inside the stator;

[0007] The blade assembly is rotatably connected to the stator and slidably connected to the mover; the blade assembly includes a plurality of blade sets, each blade set includes at least three blades in different layers and staggered and stacked, adjacent blades in two adjacent blade sets are partially stacked, and all blades included in the plurality of blade sets are combined on one side away from the stator to form a light-transmitting hole.

[0008] In some embodiments, the number of the blade sets included in the blade assembly is three.

[0009] In some embodiments, the number of blades included in each of the blade sets is the same as the number of layers of blades in the blade assembly.

[0010] In some embodiments, each of the blade sets includes a first blade, a second blade, and a third blade located in the first layer, the second layer, and the third layer from top to bottom;

[0011] The first blade portion is stacked on the third blade of the previous blade set, and the third blade portion is stacked under the first blade of the next blade set.

[0012] In some embodiments, a side of each blade away from the stator includes a first straight segment and a second arc segment connected;

[0013] When the variable aperture is in the maximum opening state, the second arc segment of each blade encloses the light-transmitting hole;

[0014] When the variable aperture is in the minimum opening state, the first straight line segment of each blade encloses the light-transmitting hole.

[0015] In some embodiments, for each blade, the thickness of the blade ranges from 40 μm to 120 μm.

[0016] In some embodiments, each blade includes a body and a fixing portion;

[0017] The fixing part is located on a side of the body close to the stator, and the fixing part is rotatably connected to the stator;

[0018] The body has a strip-shaped driving hole, and the mover has a limiting column, and the limiting column is slidably arranged in the strip-shaped driving hole.

[0019] In some embodiments, the fixing portion has a positioning hole, and the stator has a fixing column, and the fixing column is disposed in the positioning hole.

[0020] In some embodiments, a side of the body facing the stator has a first avoidance hole.

[0021] In some embodiments, the variable aperture further comprises at least one roller;

[0022] The stator has at least one first fixed groove, and the rollers are arranged in the first fixed groove one by one and can rotate in the first fixed groove;

[0023] The at least one roller is in rolling connection with the mover.

[0024] In some embodiments, the variable aperture further comprises at least two magnets and at least one coil;

[0025] The at least two magnets are arranged on the mover, and the at least one coil is arranged on the stator. The at least two magnets are suitable for cooperating with the at least one coil to provide driving force for the mover.

[0026] In some embodiments, the variable aperture further comprises at least one magnetic sheet;

[0027] The magnetic sheets are arranged on the coils in a one-to-one correspondence and are configured to interact with the magnets.

[0028] In some embodiments, the variable aperture further comprises a flexible circuit board;

[0029] The flexible circuit board surrounds the outer circumference of the stator and is connected to the coil.

[0030] In some embodiments, the variable aperture further comprises an annular spacer;

[0031] The annular gasket is arranged on the mover and is located between the blade assembly and the mover.

[0032] In some embodiments, the variable aperture further includes a limit plate;

[0033] The limiting plate is arranged on the blade assembly and connected to the stator.

[0034] In a second aspect, an embodiment of the present application further provides a camera module, which includes a variable aperture and a lens assembly as described in the first aspect above, wherein the variable aperture is arranged on the lens assembly and is located on the light incident side of the lens assembly.

[0035] In a third aspect, an embodiment of the present application further provides an electronic device, which includes the variable aperture as described in the first aspect above, or the camera module as described in the second aspect above.

[0036] The variable aperture provided in the embodiment of the present application is driven by the mover to rotate relative to the stator, and the mover drives the multiple blade sets located thereon to open and close, so that the aperture of the light-transmitting hole surrounded by the multiple blade sets can be changed. Since the variable aperture has multiple blade sets arranged in a ring shape, each blade set includes at least three blades arranged in an interlaced manner, and the two blades located at the edges of two adjacent blade sets overlap each other, the light-transmitting hole of the variable aperture is surrounded by all the blades included in the multiple blade sets, that is, the light-transmitting hole is surrounded by the inner sides of at least six blades. As the number of edges surrounding the light-transmitting hole increases, it means that the shape of the light-transmitting hole is closer to a circle, and the light flux corresponding to the circular light-transmitting hole is the largest, so the variable aperture increases the light flux entering it, thereby improving the imaging quality.

[0037] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1A schematic diagram of the structure of a variable aperture provided in an embodiment of the present application;

[0040] Figure 2 An exploded schematic diagram of a variable aperture provided in an embodiment of the present application;

[0041] Figure 3 A partial structural schematic diagram of a variable aperture provided in an embodiment of the present application;

[0042] Figure 4 A schematic diagram of the structure of a blade assembly in a variable aperture provided in an embodiment of the present application;

[0043] Figure 5 A schematic diagram of the structure of blades in a variable aperture provided in an embodiment of the present application;

[0044] Figure 6 A top view of a variable aperture provided in an embodiment of the present application;

[0045] Figure 7 A schematic diagram of the structure of a variable aperture provided in an embodiment of the present application when it is in a maximum opening state;

[0046] Figure 8 A schematic diagram of the structure of a variable aperture provided in an embodiment of the present application when it is in a minimum opening state;

[0047] Fig. 9 A schematic diagram of the structure of a variable aperture provided in an embodiment of the present application when it is in an intermediate opening and closing state;

[0048] Fig.10 A schematic diagram of the structure of a mover in a variable aperture provided in an embodiment of the present application;

[0049] Fig.11 A schematic diagram of the structure of a stator in a variable aperture provided in an embodiment of the present application;

[0050] Fig.12 A schematic diagram of the structure of a flexible circuit board in a variable aperture provided in an embodiment of the present application;

[0051] Fig.13 A schematic diagram of the structure of an annular gasket in a variable aperture provided in an embodiment of the present application;

[0052] Fig.14 A schematic diagram of the structure of a camera module provided in an embodiment of the present application.

[0053] The reference numerals in the figures represent respectively:

[0054] 1- variable aperture, 11- blade assembly, 111- blade set, 1111- blade, 11111- body, 11112- fixing part, 11113- bar-shaped driving hole, 11114- positioning hole, 11115- first avoidance hole, 1111a- first straight line segment, 1111b- second arc segment, 1112- first blade, 1113- second blade, 1114- third blade, 12- mover, 12 1-limiting column, 122-second fixed groove, 13-stator, 131-fixed column, 132-first fixed groove, 133-third fixed groove, 14-light-transmitting hole, 15-roller, 16-magnet, 17-coil, 18-magnetic sheet, 19-annular gasket, 191-connecting hole, 192-second avoidance hole, 110-limiting plate, 112-flexible circuit board, 1121-first extension part, 1122-second extension part,

[0055] 2- Lens assembly. DETAILED DESCRIPTION

[0056] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0057] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0059] A variable aperture is an aperture that can be adjusted as needed to control the amount of light entering the camera. Variable apertures are widely used in professional cameras. The size of this type of variable aperture is controlled by a set of blades inside the lens and can be changed manually or automatically. A larger aperture allows more light to enter the camera, making the photo brighter. It can also create a shallow depth of field effect when shooting close subjects, making the subject stand out. A smaller aperture can limit the amount of light entering the camera, making the photo darker. It can also create a deep depth of field effect when shooting distant scenes, making the entire picture clear.

[0060] In the related art, mobile phone cameras of mid- and low-end electronic devices usually have a fixed aperture size, so the variable aperture function cannot be realized. Only some high-end electronic devices are equipped with lenses with variable apertures. The variable aperture usually includes a rotating component and multiple blades. When the rotating component rotates, the rotating component drives the multiple blades to open and close. However, the light inlet formed by multiple blades currently limits the light flux of the variable aperture, which in turn affects the imaging quality.

[0061] Therefore, the present application provides a variable aperture, as well as a camera module and an electronic device using the variable aperture. The variable aperture can increase the light flux entering it, thereby improving the imaging quality, which is conducive to the application of the variable aperture in miniaturized and micro-miniaturized camera modules.

[0062] The electronic device provided by the present application can be any of various types of computer system devices that are mobile or portable and perform wireless communication. Specifically, the electronic device can be a mobile phone or smart phone (e.g., a phone based on iPhone TM, a phone based on Android TM), a portable game device (e.g., Nintendo DS TM, PlayStationPortable TM, Gameboy Advance TM, iPhone TM), a laptop, a PDA, a portable Internet device, a music player, and a data storage device, other handheld devices, and headsets, etc. The electronic device can also be other wearable devices that need to be charged (e.g., a head-mounted device (HMD) such as an electronic bracelet, an electronic necklace, an electronic device, or a smart watch).

[0063] The electronic device can also be any one of a plurality of electronic devices, including but not limited to cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, other media recorders, radios, medical devices, vehicle transportation instruments, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbook computers, personal digital assistants (PDAs), portable multimedia players (PMPs), Moving Picture Experts Group (MPEG-1 or MPEGG-2) Audio Layer 3 (MP3) players, portable medical devices, and digital cameras and combinations thereof.

[0064] In some cases, the electronic device can perform multiple functions (e.g., play music, display video, store pictures, and receive and send phone calls). If desired, the electronic device can be a device such as a cellular phone, a media player, other handheld device, a wristwatch device, a pendant device, a handset device, or other compact portable device.

[0065] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0066] Figure 1 A schematic diagram of a variable aperture structure provided in an embodiment of the present application is shown in FIG. Figure 2 A schematic diagram of a variable aperture provided in an embodiment of the present application is shown below. Figure 3 A partial structural diagram of a variable aperture provided in an embodiment of the present application, wherein Figure 3 The left half is a schematic diagram of the combined structure, and the right half is a schematic diagram of the split structure.

[0067] See also Figure 1 , Figure 2 and Figure 3 The variable aperture 1 provided in the embodiment of the present application includes: a blade assembly 11, a mover 12 and a stator 13.

[0068] The interior of the stator 13 is hollow, and the mover 12 is rotatably disposed inside the stator 13 .

[0069] The blade assembly 11 is rotatably connected to the stator 13 and slidably connected to the mover 12; the blade assembly 11 includes a plurality of blade sets 111, each blade set 111 includes at least three blades 1111 that are in different layers and staggered and stacked, adjacent blades 1111 in two adjacent blade sets 111 are partially overlapped, and all blades 1111 included in the plurality of blade sets 111 are combined on one side away from the stator 13 to form a light-transmitting hole 14.

[0070] Here, the stator 13 and the mover 12 are both annular structures, and both have a communication space that passes through from top to bottom, and the light-transmitting hole 14 is connected to the communication space of the stator 13 and the mover 12 .

[0071] It should be noted that all blades 1111 in the blade assembly 11 have the same structure.

[0072] When the variable aperture provided in the embodiment of the present application is in use, the mover 12 rotates relative to the stator 13, and the mover 12 drives the multiple blade sets 111 located thereon to open and close, so that the aperture of the light-transmitting hole 14 surrounded by the multiple blades 1111 can change, thereby realizing the opening and closing of the aperture.

[0073] Since the variable aperture 1 has multiple blade sets 111 arranged in a ring shape, each blade set 111 includes at least three blades 1111 arranged in an interlaced manner, and the two blades 1111 located at the edges of two adjacent blade sets 111 overlap each other, the light-transmitting hole 14 of the variable aperture 1 is surrounded by all the blades 1111 included in the multiple blade sets 111, that is, the light-transmitting hole 14 is surrounded by the inner sides of at least six blades 1111. As the number of edges surrounding the light-transmitting hole 14 increases, it means that the shape of the light-transmitting hole 14 is closer to a circle, and the light flux corresponding to the circular light-transmitting hole is the largest. Therefore, the variable aperture 1 increases the light flux entering it, thereby improving the imaging quality.

[0074] In the embodiment of the present application, the variable aperture 1 includes a maximum opening state, an intermediate state and a minimum opening state, wherein the intermediate state is any state between the maximum opening state and the minimum opening state. Figure 7 A schematic diagram of a variable aperture in a maximum opening state provided in an embodiment of the present application, see Figure 7 When the variable aperture 1 is in the maximum opening state, the aperture of the light-transmitting hole 14 is the largest, and the light flux entering the variable aperture is the largest. Figure 8 A structural diagram of a variable aperture in a minimum opening state provided in an embodiment of the present application, see Figure 8 When the variable aperture 1 is in the minimum opening state, the aperture of the light-transmitting hole 14 is the smallest, and the light flux entering the variable aperture is the least. Fig. 9 A schematic diagram of the structure of a variable aperture in an intermediate opening and closing state provided in an embodiment of the present application, see Fig. 9 When the variable aperture 1 is in the middle state, the aperture of the light-transmitting hole 14 is between the maximum and the minimum, and the light flux entering the variable aperture is between the maximum and the minimum. In the following, the structure when the variable aperture is in the maximum opening state is taken as an example for description.

[0075] In some embodiments, the number of blade sets 111 included in the blade assembly 11 is three.

[0076] Figure 4 A schematic diagram of the structure of a blade assembly in a variable aperture provided in an embodiment of the present application. For example, see Figure 4 , when the blade set 111 includes three blades 1111 and the number of the blade sets 111 is three, the blade assembly 11 includes nine blades.

[0077] By setting up a blade assembly 11 including nine blades, the light-transmitting hole 14 is formed by the inner edges of the nine blades. Compared with the light-transmitting hole formed by the inner edges of six blades, the light-transmitting hole formed by the blade assembly 11 is closer to a circle, has a larger luminous flux and a higher imaging quality.

[0078] In some embodiments, the number of blades 1111 included in each blade set 111 is the same as the number of layers of blades 1111 in the blade assembly 11 .

[0079] Exemplarily, when the number of blades 1111 included in the blade set 111 is three, the number of layers of blades 1111 in the blade assembly 11 is three.

[0080] Further, see Figure 4 When the number of blade sets 111 is three and the number of blades 1111 included in the blade set 111 is three, the number of layers of blades 1111 in the blade assembly 11 is three, and the number of blades is nine.

[0081] The following is a detailed description using the example of a variable aperture with nine blades:

[0082] In some embodiments, see Figure 4 Each blade set 111 includes a first blade 1112, a second blade 1113 and a third blade 1114 which are sequentially located in the first layer, the second layer and the third layer from top to bottom, that is, each blade set 111 stacks the blades 1111 into three layers.

[0083] The first blade 1112 is partially overlapped on the third blade 1114 of the previous blade set 111 , and the third blade 1114 is partially overlapped under the first blade 1112 of the next blade set 111 .

[0084] Such arrangement enables the blades 1111 in the blade assembly 11 to be stacked in layers and cycles to form a ring shape.

[0085] Understandably, Figure 4 The state shown is only a structural diagram when the variable aperture 1 is in the maximum opening and closing state. When the blade assembly 11 rotates driven by the mover 12, the positional relationship between the first blade 1112, the second blade 1113 and the third blade 1114 will change, but the number of layers of the blades 1111 in the blade assembly 11 will not change.

[0086] exist Figure 4 In the shown state, in any blade set 111, the second part of the first blade 1112 is pressed onto the first part of the second blade 1113, and the first part of the third blade 1114 is pressed onto the second part of the second blade 1113, wherein the first part and the second part of the second blade 1113 do not overlap; the first part of the first blade 1112 is pressed onto the second part of the third blade 1114 of the previous blade set 111, and the second part of the third blade 1114 is pressed under the first part of the first blade 1112 of the next blade set 111, wherein the first part and the second part of the first blade 1112 and the first part and the second part of the third blade 1114 do not overlap.

[0087] Figure 5 A schematic diagram of the structure of a blade in a variable aperture provided in an embodiment of the present application. In some embodiments, see Figure 5 , each blade 1111 includes a main body 11111 and a fixing portion 11112 .

[0088] Among them, the fixing part 11112 is located on one side of the main body 11111 close to the stator 13, and the fixing part 11112 is rotatably connected to the stator 13; the main body 11111 has a bar-shaped driving hole 11113, and the mover 12 has a limiting column 121, and the limiting column 121 can be slidably arranged in the bar-shaped driving hole 11113.

[0089] Here, the body 11111 is the main structure of the blade 1111 and is used for sliding connection with the mover 12 ; the fixing portion 11112 is used for rotation connection with the stator 13 .

[0090] It can be understood that the number of the limiting posts 121 is the same as the number of the blades 1111 . Fig.10 A schematic diagram of a structure of a movable element in a variable aperture provided in an embodiment of the present application, for example, see Fig.10 , the number of the limiting posts 121 is nine.

[0091] In some embodiments, the fixing portion 11112 is an arc-shaped structure to facilitate rotation on the stator 13 .

[0092] In some embodiments, the main body 11111 and the fixing portion 11112 are integrally formed.

[0093] In some embodiments, in combination Figure 3 and Figure 5 The fixing portion 11112 has a positioning hole 11114 , and the stator 13 has a fixing column 131 , which is disposed in the positioning hole 11114 .

[0094] When the blade 1111 rotates, the blade 1111 can rotate around the fixing column 131. Due to the fixed fit between the fixing column 131 and the positioning hole 11114, the blade 1111 can rotate without moving.

[0095] In some embodiments, the positioning hole 11114 is a circular hole to facilitate rotation.

[0096] In some embodiments, see Figure 5 The main body 11111 has a first avoidance hole 11115 on one side facing the stator 13 .

[0097] By providing the first avoidance hole 11115 , avoidance of other structures of the variable aperture 1 is achieved.

[0098] See also Figure 5 The first avoidance hole 11115 can be a rectangular through hole, and its four corners can be rounded.

[0099] In some embodiments, see Figure 5 The side of each blade 1111 away from the stator 13 includes a first straight line segment 1111a and a second arc segment 1111b connected to each other, and the first straight line segment 1111a and the second arc segment 1111b are smoothly connected.

[0100] See also Figure 7 , combined with Figure 4 When the variable aperture 1 is in the maximum opening state, the second arc segment 1111b of each blade 1111 encloses a light-transmitting hole 14. Since the light-transmitting hole 14 is enclosed by the second arc segments 1111b of nine blades, the light-transmitting hole 14 is approximately circular at this time, and the luminous flux is maximum in this state.

[0101] See also Figure 8 When the variable aperture 1 is in the minimum opening state, the first straight line segment 1111a of each blade 1111 surrounds a light-transmitting hole 14. Since the light-transmitting hole 14 is surrounded by the first straight line segments 1111a of nine blades, the light-transmitting hole 14 is nine-sided at this time. In this state, the luminous flux is minimum.

[0102] See also Fig. 9 , the variable aperture 1 is in Fig. 9 In the intermediate state of an example shown, the first straight line segments 1111a of each blade 1111 surround a light-transmitting hole 14. Since the light-transmitting hole 14 is surrounded by the first straight line segments 1111a of nine blades, the light-transmitting hole 14 is nine-sided.

[0103] Combination Figure 7 , Figure 8 and Fig. 9It can be seen that when the variable aperture 1 changes from the maximum opening state to the minimum opening state, the light-transmitting hole 14 is gradually transformed from being surrounded by the second arc segments 1111b to being surrounded by the first straight segments 1111a, and is mainly surrounded by the first straight segments 1111a.

[0104] In some embodiments, for each blade 1111 , the thickness of the blade 1111 ranges from 40 μm to 120 μm.

[0105] Exemplarily, the thickness of blade 1111 is 55 μm cicada wing blade.

[0106] In some embodiments, the blade 1111 is made of polyimide (PI) material, so that the blade 1111 has the characteristics of high temperature resistance and not easy to deform. In addition, the surface of the blade 1111 is formed by a carbon plating process to form a carbon plating layer, which can absorb reflected light to achieve a 100% light isolation effect.

[0107] Figure 6 A top view of a variable aperture provided in an embodiment of the present application. Figure 6 The variable aperture 1 also includes at least one roller 15.

[0108] Among them, combined Figure 3 The stator 13 has at least one first fixed groove 132 , and the rollers 15 are arranged in the first fixed groove 132 in a one-to-one correspondence and can rotate in the first fixed groove 132 ; at least one roller 15 is rollingly connected to the mover 12 .

[0109] By providing the rollers 15 , the friction in the relative motion between the mover 12 and the stator 13 can be converted into rolling friction.

[0110] Exemplarily, there are two rollers 15 , and there are two first fixing grooves 132 . Two rollers 15 are arranged in the corresponding first fixing grooves 132 at intervals.

[0111] In some embodiments, the variable aperture 1 further includes at least two magnets 16 and at least one coil 17 .

[0112] Among them, at least two magnets 16 are arranged on the mover 12, and at least one coil 17 is arranged on the stator 13. The at least two magnets 16 are suitable for cooperating with the at least one coil 17 to provide driving force for the mover 12.

[0113] When at least one coil 17 is energized, it generates interaction force with at least two magnets 16, thereby driving the mover 12 to rotate relative to the stator 13, and the fixing part 11112 rotates around the fixing column 131. The limiting column 121 on the mover 12 moves along the strip-shaped driving hole 11113, driving the blade 1111 to rotate, thereby realizing the opening and closing of the blade assembly 11.

[0114] See also Figure 2 There are two magnets 16 in an arc shape, which are arranged adjacent to each other along the rotation direction of the mover 12. The magnetic field directions of the magnets are the directions close to and away from the axis of the light-transmitting hole 14, and the magnetic field directions of adjacent magnets are opposite. For example, the N pole of the first magnet faces the axis of the light-transmitting hole 14, and the S pole faces away from the axis of the light-transmitting hole 14; the N pole of the adjacent second magnet faces away from the axis of the light-transmitting hole 14, and the S pole faces the axis of the light-transmitting hole 14.

[0115] When a current in a certain direction is passed through the coil 17 corresponding to the above-mentioned two magnets 16, generating a magnetic field with the N pole facing the axis of the light-transmitting hole 14, the coil 17 is attracted to the S pole of the first magnet and repelled from the N pole of the second magnet, so that the mover 12 has a tendency to rotate so that the coil 17 and the first magnet are aligned.

[0116] In some embodiments, see Fig.10 The mover 12 has a second fixing groove 122 , and at least two magnets 16 are arranged in the second fixing groove 122 to be fixedly connected to the mover 12 .

[0117] Fig.11 A schematic diagram of the structure of a stator in a variable aperture provided in an embodiment of the present application. In some embodiments, see Fig.11 The stator has at least one third fixing slot 133 , and the coils 17 are arranged in the third fixing slots 133 one by one to be fixedly connected to the stator 13 .

[0118] For example, see Figure 2 , the number of coils 17 is two.

[0119] In some embodiments, the magnet 16 and the coil 17 are both inclined and arranged in parallel, which can effectively reduce the thickness of the variable aperture 1. Correspondingly, the inner groove wall of the second fixing groove 122 is an inclined surface to facilitate the fixing of the magnet 16.

[0120] In some embodiments, see Figure 2 The variable aperture 1 also includes at least one magnetic piece 18 .

[0121] The magnetic sheets 18 are arranged on the coils 17 in a one-to-one correspondence and are configured to interact with the magnets 16 so that the mover 12 presses the rollers 15 and cooperates with the stator 13 .

[0122] It should be noted that the interaction here refers to the magnetic force.

[0123] Optionally, the magnetic sheet 18 is disposed on a side of the coil 17 away from the inner wall of the third fixing groove 133 for easy installation.

[0124] In some embodiments, see Figure 2 The variable aperture 1 also includes a flexible circuit board 112 .

[0125] The flexible printed circuit board 112 surrounds the outer circumference of the stator 13 and is connected to the coil 17 to energize the coil 17 .

[0126] Fig.12 A schematic diagram of the structure of a flexible circuit board in a variable aperture provided in an embodiment of the present application, see Fig.12 The flexible circuit board 112 is annular and has a first extension portion 1121 and a second extension portion 1122 arranged opposite to each other, and the first extension portion 1121 and the second extension portion 1122 are used to be electrically connected to an external device of the variable aperture 1. Exemplarily, the first extension portion 1121 and the second extension portion 1122 are electrically connected to a spring on a motor in the lens assembly.

[0127] Combination Figure 1 , Figure 2 and Fig.12 The coil 17 is located inside the flexible circuit board 112 and is electrically connected to the flexible circuit board 112 .

[0128] In some embodiments, see Figure 2 The variable aperture 1 also includes an annular gasket 19 .

[0129] The annular gasket 19 is arranged on the mover 12 and is located between the blade assembly 11 and the mover 12. By arranging the annular gasket 19, when the variable aperture 1 is in the maximum opening and closing state, its inner circle acts as the maximum aperture to control the amount of light entering.

[0130] Fig.13 A schematic diagram of the structure of a ring-shaped gasket in a variable aperture provided in an embodiment of the present application, see Fig.13 The annular gasket 19 has a connecting hole 191 in the middle, which is connected to the light-transmitting hole 14; the outer circumference of the annular gasket 19 has a plurality of second avoidance holes 192, which are used to avoid the upper limit posts 121 of the mover 12. It can be understood that the number of the second avoidance holes 192 is the same as the number of the limit posts 121. For example, see Fig.13 , the number of the second avoidance holes 192 is nine.

[0131] In some embodiments, see Figure 2The variable aperture 1 also includes a limiting plate 110 .

[0132] The limiting plate 110 is disposed on the blade assembly 11 and connected to the stator 13 to limit the blade assembly 11 and the mover 12 in the direction along the axis of the light-transmitting hole 14 .

[0133] In some embodiments, the limiting plate 110 is made of plastic, and metal parts are disposed inside the limiting plate 110 to ensure that the limiting plate 110 has sufficient strength.

[0134] In some embodiments, the variable aperture 1 provided in the embodiments of the present application can achieve stepless adjustment, that is, it can be automatically controlled to move to different positions within the stroke and maintain them through the mover 12.

[0135] For example, when the variable aperture 1 is applied in a camera module and used to shoot a video, the camera module has ultra-high exposure flexibility and can adapt to changes in light, so that the light effect of the captured video is better.

[0136] The embodiment of the present application also provides a camera module. Fig.14 A schematic diagram of the structure of a camera module provided in an embodiment of the present application is shown in FIG. Fig.14 The camera module includes a variable aperture 1 and a lens assembly 2 as described in the above embodiments. The variable aperture 1 is arranged on the lens assembly 2 and is located on the light incident side of the lens assembly 2.

[0137] The camera module of the embodiment of the present application adopts the variable aperture 1 of the present application, and has all the beneficial technical effects of the variable aperture embodiment. The variable aperture 1 is located on the light incident side of the lens assembly 2, and can adjust the amount of light entering the lens assembly 2, thereby realizing the aperture adjustment of the camera module.

[0138] The camera module of the embodiment of the present application is used to capture images or videos.

[0139] In some embodiments, when the variable aperture 1 is in the minimum opening state, shooting is performed using a camera module having the variable aperture 1 provided in an embodiment of the present application. Since light diffracts when passing through the blade assembly 11, the light source can present a radial starburst effect, thereby achieving starburst shooting with good effect.

[0140] In some embodiments, the camera module may further include a flash. The flash may be a single-color temperature flash or a dual-color temperature flash. The dual-color temperature flash refers to a combination of a warm light flash and a cold light flash, which can be used for light compensation at different color temperatures.

[0141] Exemplarily, the camera module includes a front camera and a rear camera. Usually, the front camera is arranged on the front panel of the electronic device, and the rear camera is arranged on the back of the electronic device. In some embodiments, there are at least two rear cameras, which are any one of a main camera, a depth of field camera, a wide-angle camera, and a telephoto camera, so as to realize the fusion of the main camera and the depth of field camera to realize the background blur function, the fusion of the main camera and the wide-angle camera to realize the panoramic shooting and the virtual reality (VR) shooting function or other fusion shooting functions.

[0142] The camera module provided by the embodiment of the present application, during the shooting process, the imaging light of the object to be photographed enters the lens assembly 2, and then reaches the image sensor, and the photons in the imaging light hit the image sensor to generate movable charges, which is the internal photoelectric effect, and the movable charges are gathered to form an electrical signal. The above electrical signal is transmitted to the mainboard through a flexible circuit board, etc. The mainboard is provided with an analog-to-digital converter (A / D converter) and a digital signal processor (Digital Signal Process, DSP), and the A / D converter converts the above electrical signal into a digital signal, and the digital signal is processed by the DSP. Finally, the image is transmitted to the screen of the electronic device to display the image, that is, the shooting of the object to be photographed is realized.

[0143] An embodiment of the present application also provides an electronic device, which includes a variable aperture as described in the above embodiments, or a camera module as described in the above embodiments.

[0144] The electronic device of the embodiment of the present application adopts the variable aperture or camera module of the present application and has all the beneficial technical effects of all the embodiments in this document.

[0145] In some possible implementations, the terminal device may also include a radio frequency (RF) circuit, a memory including one or more computer-readable storage media, an input unit, a display unit, a sensor, an audio circuit, a Wi-Fi module, a processor including one or more processing cores, and a power supply and other components.

[0146] Among them, the variable aperture 10 or the camera module is electrically connected to the processor respectively. The processor is the control center of the electronic device, which uses various interfaces and lines to connect various parts of the entire mobile phone, and executes various functions of the terminal device and processes data by running or executing software programs and / or modules stored in the memory, and calling data stored in the memory, so as to monitor the mobile phone as a whole. Optionally, the processor may include one or more processing cores; preferably, the processor may integrate an application processor and a modem processor, wherein the application processor mainly processes the operation storage medium, user interface and application program, etc., and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor may not be integrated into the processor.

[0147] It should be noted that the "several" and "at least one" mentioned in this article refer to one or more, and "multiple" and "at least two" refer to two or more. "And / or" describes the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0148] In the description of this application, 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; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0149] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0150] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0151] In the description of this specification, the reference terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application.

[0152] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A variable aperture (1), characterized in that: The variable aperture (1) comprises: a blade assembly (11), a mover (12) and a stator (13); The interior of the stator (13) is hollow, and the mover (12) is rotatably arranged inside the stator (13); The blade assembly (11) is rotatably connected to the stator (13) and slidably connected to the mover (12); the blade assembly (11) comprises a plurality of blade sets (111), each blade set (111) comprises at least three blades (1111) in different layers and staggered and stacked, adjacent blades (1111) in two adjacent blade sets (111) are partially stacked, and all blades (1111) included in the plurality of blade sets (111) are arranged on a side away from the stator (13) to enclose a light-transmitting hole (14).

2. The variable aperture (1) according to claim 1, characterized in that: The number of the blade sets (111) included in the blade assembly (11) is three.

3. The variable aperture (1) according to claim 1, characterized in that: The number of blades (1111) included in each blade set (111) is the same as the number of layers of blades (1111) in the blade assembly (11).

4. The variable aperture (1) according to claim 1, characterized in that: Each blade set (111) comprises a first blade (1112), a second blade (1113) and a third blade (1114) which are sequentially located at a first layer, a second layer and a third layer from top to bottom; The first blade (1112) is partially overlapped on the third blade (1114) of the previous blade set (111), and the third blade (1114) is partially overlapped under the first blade (1112) of the next blade set (111).

5. The variable aperture (1) according to claim 1, characterized in that: The side of each blade (1111) away from the stator (13) comprises a first straight segment (1111a) and a second arc segment (1111b) connected to each other; When the variable aperture (1) is in a maximum opening state, the second arc segment (1111b) of each blade (1111) encloses the light-transmitting hole (14); When the variable aperture (1) is in the minimum opening state, the first straight line segment (1111a) of each blade (1111) encloses the light-transmitting hole (14).

6. The variable aperture (1) according to claim 1, characterized in that: For each blade (1111), the thickness of the blade (1111) ranges from 40 μm to 120 μm.

7. The variable aperture (1) according to claim 1, characterized in that: Each blade (1111) includes a body (11111) and a fixing portion (11112); The fixing portion (11112) is located on a side of the body (11111) close to the stator (13), and the fixing portion (11112) is rotatably connected to the stator (13); The body (11111) has a strip-shaped driving hole (11113), and the mover (12) has a limiting column (121), and the limiting column (121) can be slidably arranged in the strip-shaped driving hole (11113).

8. The variable aperture (1) according to claim 7, characterized in that: The fixing portion (11112) has a positioning hole (11114), and the stator (13) has a fixing column (131), and the fixing column (131) is arranged in the positioning hole (11114).

9. The variable aperture (1) according to claim 7, characterized in that: The body (11111) has a first avoidance hole (11115) on a side facing the stator (13).

10. The variable aperture (1) according to any one of claims 1 to 9, characterized in that: The variable aperture (1) further comprises at least one roller (15); The stator (13) has at least one first fixed groove (132), and the rollers (15) are arranged in the first fixed groove (132) in a one-to-one correspondence and can rotate in the first fixed groove (132); The at least one roller (15) is rollingly connected to the mover (12).

11. The variable aperture (1) according to any one of claims 1 to 9, characterized in that: The variable aperture (1) further comprises at least two magnets (16) and at least one coil (17); The at least two magnets (16) are arranged on the mover (12), and the at least one coil (17) is arranged on the stator (13). The at least two magnets (16) are suitable for cooperating with the at least one coil (17) to provide driving force for the mover (12).

12. The variable aperture (1) according to claim 11, characterized in that: The variable aperture (1) further comprises at least one magnetic sheet (18); The magnetic sheets (18) are arranged on the coils (17) in a one-to-one correspondence and are configured to interact with the magnets (16).

13. The variable aperture (1) according to claim 11, characterized in that: The variable aperture (1) further comprises a flexible circuit board (112); The flexible circuit board (112) surrounds the outer circumference of the stator (13) and is connected to the coil (17).

14. The variable aperture (1) according to any one of claims 1 to 9, characterized in that: The variable aperture (1) further comprises an annular gasket (19); The annular gasket (19) is arranged on the mover (12) and is located between the blade assembly (11) and the mover (12).

15. The variable aperture (1) according to any one of claims 1 to 9, characterized in that: The variable aperture (1) further comprises a limiting plate (110); The limiting plate (110) is arranged on the blade assembly (11) and is connected to the stator (13).

16. A camera module, characterized in that: The camera module comprises a variable aperture (1) and a lens assembly (2) as described in any one of claims 1 to 15, wherein the variable aperture (1) is arranged on the lens assembly (2) and is located on the light incident side of the lens assembly (2).

17. An electronic device, characterized in that: The electronic device comprises a variable aperture (1) as described in any one of claims 1 to 15, or a camera module as described in claim 16.

Images