CN116648901A - Imaging module, manufacturing method and mobile terminal - Google Patents
Imaging module, manufacturing method and mobile terminal Download PDFInfo
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- CN116648901A CN116648901A CN202180084487.4A CN202180084487A CN116648901A CN 116648901 A CN116648901 A CN 116648901A CN 202180084487 A CN202180084487 A CN 202180084487A CN 116648901 A CN116648901 A CN 116648901A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000003384 imaging method Methods 0.000 title claims description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 59
- 238000000465 moulding Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
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- 238000005516 engineering process Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 7
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- 238000009434 installation Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 3
- 239000005304 optical glass Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Studio Devices (AREA)
- Adjustment Of Camera Lenses (AREA)
Abstract
The application provides an image pickup module, a manufacturing method and a mobile terminal. The camera module comprises: a photosensitive assembly; the first lens structure, the second lens structure and the third lens structure are sequentially arranged on a photosensitive path of the photosensitive assembly from the object side to the image side along the optical axis; a focusing assembly, comprising: the driving part is fixedly connected with the second lens structure; and the fixed frame is fixedly connected with the third lens structure and limits the driving part to move along the direction of the optical axis. The camera module provided by the application can reduce the overall height of the camera module, thereby being beneficial to the light and thin of the camera module.
Description
The present application relates to the technical field of optical devices, and more particularly, to an image pickup module, a manufacturing method, and a mobile terminal.
In recent years, electronic mobile terminals such as mobile phones and the like are gradually advancing toward light weight and high performance. The light and thin mobile phone is beneficial to improving the handheld experience of users. Therefore, mobile phone manufacturers also put corresponding demands on the camera module, which is one of the standard configurations of mobile phones.
In order to meet the requirements of users on imaging quality, the camera module usually needs to have multiple functions of high pixel, long focal length, large aperture, auto-focusing, anti-shake, etc., and integrating these functions often leads to an increase in the size of the camera module, especially an increase in the height of the camera module.
The increase in height and the thinning of the mobile phone caused by the improvement of the functions of the camera module can cause the assembled camera module to protrude out of the body shell of the mobile phone and form a boss on the back side of the mobile phone. This can cause the handset to be in a tilted and unstable state when placed on a desktop or other flat surface, affecting the user's operating experience. More importantly, the camera module protrudes out of the body shell of the mobile phone, so that the camera module or the protective cover plate on the outer side of the camera module has great damage risk, such as scratches and cracks are very easy to generate due to collision or dropping, and imaging of the camera module is affected.
Disclosure of Invention
The application provides an image pickup module capable of at least partially solving the technical problems, a manufacturing method and a mobile terminal.
In one aspect, the application provides a camera module. The camera module comprises: a photosensitive assembly; the first lens structure, the second lens structure and the third lens structure are sequentially arranged on a photosensitive path of the photosensitive assembly from the object side to the image side along the optical axis; a focusing assembly, comprising: the driving part is fixedly connected with the second lens structure; and the fixed frame is fixedly connected with the third lens structure and limits the driving part to move along the direction of the optical axis.
In one embodiment, the driving part is provided with at least one first magnetic structure and with at least one first ball groove parallel to the optical axis; the fixed frame is provided with at least one first coil structure and at least one second ball groove, wherein the position of the first coil structure corresponds to the position of the first magnetic structure, and the position of the first ball groove corresponds to the position of the second ball groove; the focusing assembly further includes: a plurality of first balls positioned between the first ball groove and the second ball groove.
In one embodiment, the camera module further includes an anti-shake assembly, including: a movable part fixedly connected with the photosensitive assembly; and the fixed part is fixedly connected with the third lens structure and limits the movable part to move on a plane perpendicular to the optical axis.
In one embodiment, the movable portion is provided with at least one second magnetic structure, and is provided with a plurality of third ball grooves perpendicular to the optical axis; the fixing part is provided with at least one second coil structure and at least one fourth ball groove, wherein the position of the second coil structure corresponds to the position of the second magnetic structure, and the position of the fourth ball groove corresponds to the position of the third ball groove; the anti-shake assembly further includes: and a plurality of second balls positioned between the third ball groove and the fourth ball groove.
In one embodiment, the camera module further comprises: and the mounting shell is used for accommodating the first lens structure, the second lens structure and the third lens structure and is fixedly connected with the first lens structure and the third lens structure.
In one embodiment, a photosensitive assembly includes: a circuit board having a first surface; the photosensitive element is arranged on the first surface of the circuit board and is provided with a photosensitive path; the electronic component is arranged on the first surface of the circuit board and is arranged at intervals with the photosensitive element; the molding seat is arranged on the first surface of the circuit board and is provided with a stepped light-transmitting hole corresponding to the light-sensing path, and the stepped light-transmitting hole comprises a first cavity far away from the light-sensing element; and a color filter disposed in the first cavity, and having a thickness on the optical axis less than or equal to a height of the first cavity on the optical axis.
In one embodiment, the circuit board has a mounting groove that accommodates the photosensitive element, wherein the shape of the mounting groove corresponds to the shape of the photosensitive element.
In one embodiment, a reinforcing plate is disposed on a second surface of the circuit board opposite to the first surface, and the reinforcing plate is fixed to the second surface of the circuit board.
In one embodiment, the mounting groove has a depth less than or equal to the thickness of the circuit board.
In one embodiment, the electronic component is encapsulated by a mold base.
In one embodiment, the mounting housing accommodates the photosensitive assembly, the movable portion is fixedly connected to the top surface of the photosensitive assembly, and the outer periphery of the fixed portion is fixedly connected to the inner side of the upper edge of the mounting housing.
In one embodiment, the first lens structure includes at least one lens including: a first lens furthest from the photosensitive assembly; the object side surface of the first lens is a plane.
In one embodiment, the image side of the first lens is concave.
The application further provides a manufacturing method of the camera module. Comprising the following steps: a third lens structure is arranged on a photosensitive path of the photosensitive assembly and along the object side of the optical axis; the focusing assembly is arranged on the object side of the third lens structure and comprises a driving part and a fixed frame, wherein the fixed frame is fixedly connected with the third lens structure and limits the driving part to move along the direction of the optical axis; arranging a second lens structure on the object side of the third lens structure, wherein the second lens structure is fixedly connected with the driving part; and arranging a first lens structure on the object side of the second lens structure
In one embodiment, the sub-optical axes of the first lens structure, the second lens structure, and the third lens structure are coincident using machine vision and active alignment techniques.
In one embodiment, the method further comprises: and an anti-shake assembly is arranged on the periphery of the photosensitive assembly, wherein the anti-shake assembly comprises a movable part and a fixed part, the movable part is fixedly connected with the photosensitive assembly, the fixed part is fixedly connected with the third lens structure, and the movable part is limited to move on a plane perpendicular to the optical axis.
The application further provides a mobile terminal. The mobile terminal comprises a camera module as described in any one of the embodiments above; and the camera module is arranged in the engine body shell and comprises a mounting hole matched with the photosensitive path of the camera module.
In one embodiment, the object side surface of the first lens furthest from the photosensitive assembly in the at least one lens of the first lens structure is in the same plane with the outer surface of the body shell.
The camera module provided by the embodiment of the application utilizes the internal focusing of the camera module to ensure the imaging quality. Therefore, the overall height of the camera module can be reduced, the compactness among the lens structures can be guaranteed, and the camera module is light and thin. Meanwhile, the anti-shake assembly is arranged, so that the imaging quality of the camera module can be further improved, and the whole volume and weight of the photosensitive assembly can be reduced, so that the anti-shake control accuracy of the photosensitive assembly is ensured. In addition, through the restriction to the installation shell of the module of making a video recording and the mounted position of other structures, can guarantee the holistic installation roughness of module of making a video recording effectively.
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of an assembly structure of a conventional camera module;
FIG. 2 is a schematic cross-sectional view of an imaging module according to an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a photosensitive assembly according to an embodiment of the present application;
fig. 4 is an assembled schematic view of a driving part according to an embodiment of the present application;
fig. 5 is a schematic structural view of a fixing frame according to an embodiment of the present application;
FIG. 6 is a schematic structural view of an anti-shake assembly according to an embodiment of the application;
fig. 7 is an assembled plan view of the movable part according to an embodiment of the present application;
FIG. 8 is an assembled schematic view of a camera module according to an embodiment of the present application;
FIG. 9 is a flowchart of a method of manufacturing an imaging module according to an embodiment of the present application;
FIG. 10 is an assembled schematic view of a lens module according to an embodiment of the present application;
fig. 11 is a schematic structural view of a mobile terminal according to an embodiment of the present application; and
fig. 12 is a left side view of the mobile terminal of fig. 11.
For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the application and is not intended to limit the scope of the application in any way.
The terminology used herein is for the purpose of describing particular example embodiments and is not intended to be limiting. The terms "comprises," "comprising," "includes," "including," and/or "having," when used in this specification, specify the presence of stated features, integers, elements, components, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, elements, components, and/or groups thereof.
The description herein refers to schematic diagrams of exemplary embodiments. The exemplary embodiments disclosed herein should not be construed as limited to the particular shapes and dimensions shown, but are to include various equivalent structures capable of performing the same function and shape and dimensional deviations, for example, from manufacturing. The locations shown in the drawings are schematic in nature and are not intended to limit the locations of the components.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In order to improve the imaging quality of the camera module, the existing camera module generally adopts a driving motor such as a voice coil motor, so that the camera module has focusing and anti-shake functions.
Fig. 1 is a schematic diagram of an assembly structure of a conventional camera module 100. As shown in fig. 1, the conventional camera module 100 includes a lens assembly 110, a driving motor 120, and a photosensitive assembly 130.
The driving motor 120 may have a driving unit and a fixing unit (not shown), the driving unit is fixedly connected with the lens assembly 110, and the lens assembly 110 fixedly connected with the driving unit may be relatively moved by moving the driving unit in different directions with respect to the fixing unit, thereby implementing focusing and anti-shake functions of the camera module 100.
Generally, when the camera module 100 is mounted on a mobile terminal, such as a mobile phone, a glass cover 101 is disposed above the lens assembly 110 and away from the photosensitive assembly 130 to protect the internal structure of the camera module 100. And a movable space of the lens assembly 110 needs to be reserved between the lens assembly 110 and the glass cover plate 101. That is, there is a movable space of the lens assembly 110 with a height H1 between the lens assembly 110 and the glass cover plate to implement a focusing function of the camera module. Therefore, the installation height of the camera module 100 in the mobile phone may be composed of the height H1 of the movable space, the height H2 of the driving motor 120, and the height H3 of the photosensitive assembly 130.
When the existing camera module 100 is installed on a mobile phone, the camera module 100 protrudes out of the body shell of the mobile phone, such as the rear shell, after being installed due to the limitation of the thickness of the mobile phone, so that the performance of the mobile phone is affected.
The image pickup module according to the embodiment of the present application will be described in detail with reference to the accompanying drawings.
Fig. 2 is a schematic cross-sectional view of an image capturing module 200 according to an embodiment of the present application. As shown in fig. 2, the camera module 200 may include: the first lens structure 210, the second lens structure 220, the third lens structure 230, the photosensitive assembly 240, the mounting housing 250, the focusing assembly 260, and the anti-shake assembly 270.
At least one lens in the first lens structure 210, at least one lens in the second lens structure 220, and at least one lens in the third lens structure 230 may together constitute an optical system of the image capturing module 200, and may remain on a photosensitive path of the photosensitive assembly 240. The imaging surface of the optical system may be located at the photosensitive assembly 240.
The imaging light incident on the object side sequentially passes through the first lens structure 210, the second lens structure 220 and the third lens structure 230, and is further received by the photosensitive assembly 240 and subjected to photoelectric conversion to form an electrical signal related to the object image. For the optical system, the object side may be referred to as an object side, and the photosensitive element 240 side may be referred to as an image side.
The focusing assembly 260 may include a driving portion 261 and a fixed frame 262, the driving portion 261 is fixedly connected with the second lens structure, the fixed frame 262 may be fixedly connected with the third lens structure 230, and the driving portion 261 is limited to move along the optical axis direction, and the driving portion 261 may enable the second lens structure 220 to generate relative displacement with the first lens structure 210 and the third lens structure 230 along the optical axis direction, so as to implement the focusing function of the image capturing module 200.
The embodiment of the application provides an imaging module which is used for realizing a focusing function in a lens assembly. The camera shooting module does not need to be provided with a movable space which needs to be reserved when a conventional driving motor structure is adopted, so that the overall height of the camera shooting module is reduced, and the light and thin camera shooting module is facilitated.
The first lens structure 210 may include at least one lens, and the lens in the first lens structure may be made of optical plastic or optical glass. Illustratively, the first lens structure 210 may include a first barrel to which the lenses of the first lens structure are attached, such as by adhesive, for carrying and protecting the lenses of the first lens structure.
In one embodiment, in at least one lens of the first lens structure 210, the object side of the first lens furthest from the photosensitive assembly 240 may be a plane, so that the first lens and an external element, such as a glass cover plate, can be completely attached during contact mounting, which is beneficial to reducing the overall mounting height of the camera module.
Illustratively, the first lens structure 210 may include a plano-concave lens, and the object-side surface of the plano-concave lens may be a plane and the image-side surface may be a concave surface. It should be understood that the first lens structure 210 may also be a single lens or a combination of multiple lenses in other forms. As long as the object side of the first lens furthest from the photosensitive assembly 240 is planar, a flat mounting plane can be provided for the external element.
Likewise, the second lens structure 220 may include at least one lens, such as two lenses, and the lenses in the second lens structure 220 may be made of optical plastic or optical glass. Illustratively, the second lens structure 220 may include a second barrel to which the lenses in the second lens structure 220 are attached, such as by adhesive, for carrying and protecting the lenses in the second lens structure.
The third lens structure 230 may include at least one lens, for example, three lenses, and the lenses in the third lens structure 230 may be made of optical plastic or optical glass. Illustratively, the third lens structure 230 may include a third barrel to which the lenses in the third lens structure 230 are attached, such as by adhesive, for carrying and protecting the lenses in the third lens structure.
The lenses of the first lens structure 210, the second lens structure 220 and the third lens structure 230 may together form an optical system of the image capturing module 200. Illustratively, the first lens structure 210, the second lens structure 220, and the third lens structure 230 may be formed as a unit with sub-optical axes positioned in the same line by, for example, bonding, for receiving external image information and transmitting the image information to the photosensitive assembly 240.
Fig. 3 is a schematic cross-sectional structure of a photosensitive assembly 240 according to an embodiment of the present application. As shown in fig. 3, the photosensitive assembly 240 may include a circuit board 241, a photosensitive element 242, an electronic component 243, a molding base 244, and a color filter 245.
The circuit board 241 may be used as a substrate of the photosensitive assembly 240 for carrying other portions of the photosensitive assembly 240. The circuit board 241 may have a first surface 2411 and a second surface 2412 opposite the first surface 2411.
The photosensitive element 242 may be disposed on the first surface 2411 of the circuit board 241. Specifically, the photosensitive element 242 may be mounted on a central area of the first surface 2411 of the circuit board 241. The photosensitive element 242 and the wiring board 241 may be electrically connected to an edge region surrounding a central region of the wiring board 241 through a connection wire 246.
Illustratively, the connection wire 246 may be a gold wire. After the photosensitive element 240 is mounted on the circuit board 241, one end of the gold wire is connected to the photosensitive element 242 by a gold wire bonding process, and the other end is connected to the circuit board 241. Those skilled in the art will appreciate that the connection line 246 may also be of other types, such as silver wire, copper wire, etc.
Illustratively, the photosensitive element 242 may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (COMS). And the photosensitive element 242 may include a photosensitive region at the center and a non-photosensitive region surrounding the photosensitive region. The photosensitive area of the photosensitive element 242 may receive light via an optical system including the first lens structure 210, the second lens structure 220, and the third lens structure 230, and has a photosensitive path corresponding to the photosensitive area.
In one embodiment, the circuit board 241 has a mounting groove that accommodates the photosensitive element 242, and the shape of the mounting groove corresponds to the shape of the photosensitive element 242. Illustratively, the depth of the mounting groove may be equal to the thickness of the circuit board 241. When the thickness of the photosensitive element 242 is less than or equal to the thickness of the circuit board 241, the photosensitive element 242 may be completely embedded in the mounting groove of the circuit board 241, and a reinforcing plate, such as a steel plate, may also be provided on the second surface 2412 of the circuit board 241 for reinforcing the strength of the circuit board 241.
Alternatively, the depth of the mounting groove may be less than the thickness of the circuit board 241, and the photosensitive element 242 may protrude from the first surface 2411 of the circuit board 241 when the photosensitive element 242 is inserted into the mounting groove (as shown in fig. 3). Likewise, a reinforcing plate, such as a steel plate, may be further provided on the second surface 2412 of the circuit board 241 for reinforcing the strength of the circuit board 241.
The size and weight of the photosensitive assembly 240 can be reduced as a whole by providing the mounting groove on the circuit board 241 to be engaged with the photosensitive element 242, which is advantageous for the anti-shake control accuracy of the photosensitive assembly 240, and the specific structure and operation principle of the anti-shake assembly 270 will be described in detail hereinafter.
The electronic component 243 may be disposed on the first surface 2411 of the circuit board 241 and spaced apart from the photosensitive element 242. Specifically, the electronic component 243 may be mounted on an edge area of the first surface 2411 of the circuit board 241 and spaced apart from the photosensitive element 242 by a certain distance. The electronic component 243 may be implemented, for example, as a capacitor, a resistor, a driving device, or the like.
The molding base 244 may be disposed on the first surface 2411 of the circuit board 241, and has a stepped light-transmitting hole corresponding to the light-sensing path of the light-sensing element 242. The stepped light-passing hole may have at least two cavities having different diameters, and the cavity farthest from the photosensitive element 242 may be the first cavity.
In one embodiment, the molding base 244 may have a top surface parallel to the first surface 2411 of the circuit board 241, and the cavity of the stepped light-passing hole near the photosensitive element 242 may have an inclined inner side. Illustratively, the molding base 244 may be disposed at an edge region of the first surface 2411 of the circuit board 241 and not overlap the photosensitive element 242. Alternatively, the molding base 244 may be disposed at an edge region of the first surface 2411 of the circuit board 241 and overlap with a non-photosensitive region of the photosensitive element 242 (as shown in fig. 3).
In one embodiment, the molding base 244 encapsulates the electronic components 243 and the connection wires 246 to be integrated with the circuit board 241 through a molding process. In other words, the electronic component 243 may be encapsulated inside the molding base 244. Illustratively, the entirety of the molding base 244 and the circuit board 241 may also include non-photosensitive regions of the photosensitive elements 242. The electronic component 243 is encapsulated between the molding base 244 and the circuit board 241, so that the electronic component 243 can be effectively protected.
The color filter 245 may be disposed in the first cavity of the stepped light-passing hole, and the thickness of the color filter 245 on the optical axis is less than or equal to the height of the first cavity of the stepped light-passing hole on the optical axis, and a space is formed between the color filter 245 and the photosensitive element 242. When the thickness of the color filter 245 is less than or equal to the height of the first cavity of the stepped light passing hole on the optical axis, the color filter 245 may be positioned in a plane with the top surface of the molding base 244 or recessed with respect to the top surface of the molding base 244. This helps to reduce the overall height of the photosensitive assembly 240 and thus the camera module. In addition, the use of the mold base 244 to support the color filter 245 eliminates the need for a separate color filter mounting base, which may reduce the volume and weight of the photosensitive assembly 240 as a whole, is advantageous for the anti-shake control accuracy of the photosensitive assembly 240, and the specific structure and operation principle of the anti-shake assembly 270 will be described in detail below.
Illustratively, the color filter 245 may be implemented as an infrared cut filter, a full light transmission spectrum filter, and other color filters or a combination of multiple color filters.
Referring again to fig. 2, in one embodiment, the mounting housing 250 may house the first, second, and third lens structures, and the mounting housing 250 may be fixedly connected (not shown) with the first, third lens structures 210, 230 by, for example, bonding. When the mounting case 250 is mounted to a mobile terminal such as a cellular phone, the first lens structure 210 and the third lens structure 230 fixedly connected to the mounting case 250 may remain in a stationary state in an operating state.
The focusing assembly 260 may include a driving part 261 and a fixed frame 262. The driving portion 261 may be fixedly connected with the second lens structure 220 by, for example, bonding, threading, and fastening, and in particular, the driving portion 261 may be fixedly connected with the second lens barrel of the second lens structure 220.
The fixed frame 262 may be fixedly coupled (not shown) with the mounting housing 250 through the third lens structure 230. Generally, when the mounting housing 250 is mounted to a mobile terminal such as a cellular phone, the fixed frame 262 fixedly coupled to the mounting housing 250 may remain stationary. Further, the fixed frame 262 may define the driving part 261 to move in the direction of the optical axis.
Specifically, when the fixed frame 262 is fixed, the driving part 261 may move a minute distance along the sub-optical axis of the second lens structure 220 with respect to the fixed frame 262. Because the sub-optical axes of the first lens structure 210, the second lens structure 220 and the third lens structure 230 are coaxial, and because the first lens structure 210 and the third lens structure 230 are fixedly connected with the fixed frame 262 so as to be kept fixed, the driving part 261 can drive the second lens structure 220 to slightly move along the optical axis relative to the first lens structure 210 and the third lens structure 230, so that fine adjustment of the position of the second lens structure 220 is realized, and the first lens structure 210 is kept fixed, so that the camera module 200 realizes a focusing function in the camera module, and the quality of the generated image is effectively improved.
It should be understood that, when the fixed frame 262 of the focusing assembly 260 is fixedly connected to the third lens structure 230, the second lens structure 220 fixedly connected to the driving portion 261 can also generate a relative displacement along the optical axis with the third lens structure 230 due to the limited movement of the fixed frame 262 to the driving portion 261, so as to implement the focusing function of the camera module 200.
In one embodiment, fig. 4 is an assembled schematic view of a driving portion 261 according to an embodiment of the present application. Fig. 5 is a schematic structural view of a mounting frame 262 according to an embodiment of the present application. As shown in fig. 4 and 5, the driving part 261 may be a rectangular parallelepiped having a middle through structure, which may accommodate the second lens structure 220, and is fixedly connected with the second lens structure 220. A first magnetic structure 2611 is provided in a central portion of the opposite side faces of the rectangular parallelepiped. On both side surfaces where the first magnetic structure 2611 is provided, first ball grooves 2612 are symmetrically provided on both sides of the first magnetic structure 2611, respectively, and the first ball grooves 2612 are provided at intervals from the first magnetic structure 2611. Further, the extending direction of the first ball groove 2612 is parallel to the optical axis direction of the second lens structure 220. In other words, the extending direction of the first ball groove 2612 is parallel to the optical axis direction.
The fixed frame 262 may be used to accommodate the driving part 261, and a first coil structure 2621 and a second ball groove 2622 are provided at both sides corresponding to the driving part 261, respectively.
The plurality of first balls 263 may be disposed in a space formed between the first ball groove 2612 and the second ball groove 2622, and the size of the first balls 263 may be matched with the size of the first ball groove 2612 and the second ball groove 2622.
When a current is applied to the first coil structure 2621, the first magnetic structure 2611 and the first coil structure 2621 are relatively moved due to a magnetic force between the first coil structure 2621 and the first magnetic structure 2611 according to an electromagnetic induction principle. Specifically, when the electromagnetic force induced by the current applied by the first coil structure 2621 attracts the first magnetic structure 2611, the fixed frame 262 provided with the first coil structure 2621 is fixed. Thus, the driving portion 261 of the first magnetic structure 2611 is provided, and movement in the optical axis direction is generated along the first ball groove 2612 and the second ball groove 2622 and the plurality of first balls 263 engaged with them. Thus, the second lens structure 220 fixedly connected to the driving portion 261 can move along the optical axis direction, and since the first lens structure 210 and the third lens structure 230 are fixed, the relative positions of the second lens structure 220 with respect to the first lens structure 210 and the third lens structure 230 along the optical axis direction can be changed, and focusing of the image capturing module 200 can be achieved by adjusting the relative positions between the lens structures.
Through the cooperation of the coil and the magnetic structure and the cooperation of the ball and the ball groove, the internal focusing function of the camera module 200 can be realized, and the principle is simple, the implementation is easy, and the cost saving is facilitated. In addition, the ball and the ball groove are matched, so that friction can be reduced, and the sensitivity in focusing is improved.
It will be appreciated by those skilled in the art that the particular form and implementation of the drive and stationary frames is not limited thereto and that other forms may be employed to produce relative movement of the drive and stationary frames in defined directions. The application can realize the internal focusing function of the optical system formed by a plurality of lens structures, is beneficial to reducing the overall installation height of the camera module and is beneficial to lightening and thinning the camera module. Referring again to fig. 2, in one embodiment, the anti-shake assembly 270 may adjust the displacement of the photosensitive assembly 240 according to the shake of the camera module 200, thereby compensating for the image shake of the camera module 200. The anti-shake assembly 270 includes a movable portion 271 and a fixed portion 272. The movable portion 271 may be fixedly coupled to the photosensitive member 240 by, for example, bonding or the like.
The fixing portion 272 may be fixedly connected with the mounting housing 250 through the third lens structure 230. Generally, when the mounting housing 250 is mounted to a mobile terminal such as a cellular phone, the fixing portion 272 fixedly coupled with the mounting housing 250 may remain stationary. And the fixed portion 272 may define the movable portion 271 to move on a plane perpendicular to the optical axis.
Specifically, when the fixed portion 272 is fixed, the movable portion 271 may move a minute distance in a plane perpendicular to the optical axis with respect to the fixed portion 272. Since the fixing portion 240 is fixedly connected to the mounting housing 250 and remains stationary, the movable portion 271 can drive the photosensitive assembly 240 to slightly move along a direction perpendicular to the optical axis, thereby realizing the anti-shake function of the camera module 200.
It should be understood that, when the fixed portion 272 of the anti-shake assembly 270 is fixedly connected to the third lens structure 230, the photosensitive assembly 240 fixedly connected to the movable portion 271 can also generate a relative displacement in a plane perpendicular to the optical axis with the optical system including the third lens structure 230 due to the limited movement of the fixed portion 272 to the movable portion 271, so as to implement the anti-shake function of the camera module 200.
By moving the photosensitive assembly 240 as a whole on a plane perpendicular to the optical axis, it is ensured that the wiring board 241 and the photosensitive element 242 of the photosensitive assembly 240 move synchronously, thereby effectively protecting the wiring connection therebetween and ensuring current supply in an operating state.
In one embodiment, FIG. 6 is a schematic diagram of an anti-shake assembly 270 according to an embodiment of the application. Fig. 7 is an assembled plan view of the movable portion 271 according to the embodiment of the present application. As shown in fig. 6 and 7, the movable portion 271 may be a rectangular parallelepiped having a middle through structure, which may correspond to the photosensitive path of the photosensitive member 240, and be fixedly connected with the photosensitive member 240, for example, a bottom surface of the movable portion 271 may be fixedly connected with a top surface of the molding seat 244 of the photosensitive member 240. Second magnetic structures 2711 may be provided on adjacent two side surfaces of the movable portion 271, and third ball grooves 2712 may be provided at four apex angle areas of the top surface of the movable portion 271. When the movable portion 271 is arranged perpendicular to the optical axis, the plane in which the third ball groove 2712 is located may be perpendicular to the optical axis.
The fixing portion 272 may serve to accommodate the movable portion 271, and a second coil structure 2721 and a fourth ball groove 2722 are provided at positions of the fixing portion 272 corresponding to the second magnetic structure 2711 and the third ball groove 2712, respectively.
A plurality of second balls 273 may be disposed in a space formed between the third ball groove 2712 and the fourth ball groove 2722, and the second balls 273 may be sized to match the third ball groove 2712 and the fourth ball groove 2722.
When a current is applied to the second coil structure 2721, the second magnetic structure 2711 is relatively moved with respect to the second coil structure 2721 due to a magnetic force between the second coil structure 2721 and the second magnetic structure 2711 according to an electromagnetic induction principle. Specifically, when the electromagnetic force induced by the current applied by the second coil structure 2721 parallel to the x-axis direction attracts or repels the second magnetic structure 2711, the movable portion 271 provided with the second magnetic structure 2711 can drive the photosensitive member 240 to move along the y-axis direction because the fixed portion 272 provided with the second coil structure 2721 is fixed. When the electromagnetic force induced by the current applied by the second coil structure 2721 parallel to the y direction attracts or repels the second magnetic structure 2711, the fixed portion 272 provided with the second coil structure 2721 is fixed, so that the movable portion 272 provided with the second magnetic structure 2722 can drive the photosensitive assembly 240 to move along the x-axis direction. Thus, the movable portion 272 drives the photosensitive assembly 240 to move relatively in the xy plane, and when the optical axis is in the z-axis direction, the anti-shake assembly 270 can move the photosensitive assembly 240 in the direction perpendicular to the optical axis.
It will be appreciated by those skilled in the art that the particular form and implementation of the movable and fixed portions is not limited thereto and that other forms may be employed to cause relative movement of the movable and fixed portions in defined directions. According to the application, the anti-shake effect of the camera module is realized by adjusting the relative position of the photosensitive component by utilizing the anti-shake component, so that the reduction of imaging quality caused by adjusting a plurality of groups of lenses can be avoided, and the improvement of the imaging quality of the camera module is facilitated.
In one embodiment, fig. 8 is an assembly schematic diagram of an imaging module 200 according to an embodiment of the present application. As shown in fig. 8, the mounting housing 250 may house the photosensitive assembly 240. The movable portion 271 is fixedly coupled to the top surface of the photosensitive member 240, and the outer circumference of the fixed portion 272 is fixedly coupled to the inner side of the upper edge of the mounting housing 250. Thus, not only the photosensitive assembly 240 can be effectively protected, but also the flatness of the bottom of the camera module 200 can be ensured. When the mounting case 250 is directly mounted on the mobile terminal, flatness of the overall structure of the camera module 200 after mounting can be ensured.
Fig. 9 is a flowchart of a method 1000 of manufacturing an imaging module according to an embodiment of the present application. As shown in fig. 9, method 1000 includes steps as described below.
S101, a third lens structure is arranged on a photosensitive path of the photosensitive assembly and along an object side of the optical axis.
S102, a focusing assembly is arranged on the object side of the third lens structure, the focusing assembly comprises a driving part and a fixed frame, and the fixed frame is fixedly connected with the third lens structure and limits the driving part to move along the direction of the optical axis.
S103, a second lens structure is arranged on the object side of the third lens structure, wherein the second lens structure is fixedly connected with the driving part.
S104, arranging a first lens structure on the object side of the second lens structure.
In one embodiment, fig. 10 is an assembly schematic diagram of an image capturing module according to an embodiment of the present application, as shown in fig. 10, a third lens structure 230, a second lens structure 220, and a first lens structure 210 may be sequentially disposed on a photosensitive path of a photosensitive assembly (not shown). Specifically, the photosensitive assembly may be disposed in the mounting housing 250' and the positions thereof are relatively fixed, and then the third lens structure 230, the second lens structure 220 and the first lens structure 210 are sequentially disposed on the photosensitive path of the photosensitive assembly, so that the sub-optical axes of the three are in the same straight line. By adopting the assembly method, the stability of the whole structure can be ensured, and the lens components are accommodated in the mounting shell 250', so that the compactness among the lens structures can be ensured, and the assembly height of the assembled camera module is reduced.
In another embodiment, a split assembly method may be used, that is, the positions of the first lens structure, the second lens structure and the third lens structure are relatively fixed, and the sub-optical axes of the first lens structure, the second lens structure and the third lens structure are in the same straight line. For example, after the second lens structure is assembled with the focusing assembly, the first lens structure, the second lens structure assembled with the focusing assembly, and the sub-optical axis of the third lens structure may be aligned. And then assembling the camera module with other structures of the camera module. Specifically, the sub-optical axes of the first to third lens structures may be aligned using machine vision and active alignment techniques.
Illustratively, the method may further comprise the steps of: the first lens structure, the third lens structure and the mounting shell are fixedly connected, and the driving part is fixedly connected with the second lens structure.
In one embodiment, the method 1000 may further comprise: an anti-shake component is arranged on the periphery of the photosensitive component. The anti-shake assembly comprises a movable part and a fixed part, wherein the movable part is fixedly connected with the photosensitive assembly, and the fixed part is fixedly connected with the third lens structure and limits the movable part to move on a plane perpendicular to the optical axis.
The camera module manufactured by the method 1000 realizes a focusing function by adjusting the relative distance between the lens structures in the optical system. The overall height of the camera module can be effectively reduced by the mode, and the camera module is light and thin.
Fig. 11 is a schematic diagram of the structure of a mobile terminal 20 according to an embodiment of the present application. Fig. 12 is a left side view of the mobile terminal 20 of fig. 11. As shown in fig. 11 and 12, the mobile terminal 20 includes a body housing 202 and at least one camera module 200, e.g., two, as described in any of the embodiments above. The camera module 200 may be disposed inside the body housing 202, and the body housing 202 may have a mounting hole matching the photosensitive path of the camera module 200.
In one embodiment, when the first lens structure includes the first lens, the object-side surface of the first lens may be in the same plane as the outer surface of the body housing 202. The mobile terminal 20 with the camera module 200 can avoid the problem that the camera module 200 protrudes out of the body shell 202 of the mobile terminal 20 due to the too high height, which is beneficial to improving the operation experience of users.
In one embodiment, the camera module 200 may be further applied to a side of the mobile terminal 20 having a display panel, so that the camera module does not protrude from the housing, and the imaging quality of the front camera module can be ensured.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (18)
- The module of making a video recording, its characterized in that includes:a photosensitive assembly;the first lens structure, the second lens structure and the third lens structure are sequentially arranged on a photosensitive path of the photosensitive assembly from the object side to the image side along the optical axis;a focusing assembly, comprising:the driving part is fixedly connected with the second lens structure;and the fixed frame is fixedly connected with the third lens structure and limits the driving part to move along the direction of the optical axis.
- The camera module of claim 1, wherein the camera module comprises a camera module,the driving part is provided with at least one first magnetic structure and at least one first ball groove parallel to the optical axis;the fixed frame is provided with at least one first coil structure and at least one second ball groove, wherein the position of the first coil structure corresponds to the position of the first magnetic structure, and the position of the first ball groove corresponds to the position of the second ball groove; andthe focusing assembly further comprises: a plurality of first balls positioned between the first ball groove and the second ball groove.
- The camera module of claim 1, wherein the camera module further comprises: an anti-shake assembly comprising:a movable part fixedly connected with the photosensitive assembly;and the fixed part is fixedly connected with the third lens structure and limits the movable part to move on a plane perpendicular to the optical axis.
- The camera module of claim 3, wherein the camera module comprises a camera module,the movable part is provided with at least one second magnetic structure and is provided with a plurality of third ball grooves perpendicular to the optical axis;the fixing part is provided with at least one second coil structure and at least one fourth ball groove, wherein the position of the second coil structure corresponds to the position of the second magnetic structure, and the position of the fourth ball groove corresponds to the position of the third ball groove; andthe anti-shake assembly further includes: and a plurality of second balls positioned between the third ball groove and the fourth ball groove.
- The camera module of claim 1, wherein the camera module further comprises: and the mounting shell is used for accommodating the first lens structure, the second lens structure and the third lens structure and is fixedly connected with the first lens structure and the third lens structure.
- The camera module of any of claims 1 to 5, wherein the photosensitive assembly comprises:a circuit board having a first surface;the photosensitive element is arranged on the first surface of the circuit board and is provided with the photosensitive path;the electronic component is arranged on the first surface of the circuit board and is arranged at intervals with the photosensitive element;the molding seat is arranged on the first surface of the circuit board and is provided with a stepped light-transmitting hole corresponding to the photosensitive path, and the stepped light-transmitting hole comprises a first cavity far away from the photosensitive element; andthe color filter is arranged in the first cavity, and the thickness of the color filter on the optical axis is smaller than or equal to the height of the first cavity on the optical axis.
- The camera module of claim 6, wherein the circuit board has a mounting slot that receives the photosensitive element, wherein the mounting slot has a shape that corresponds to the shape of the photosensitive element.
- The camera module according to claim 7, wherein a reinforcing plate is provided on a second surface of the wiring board opposite to the first surface, the reinforcing plate being fixed to the second surface of the wiring board.
- The camera module of claim 7, wherein the mounting groove has a depth less than or equal to a thickness of the circuit board.
- The camera module of claim 6, wherein the electronic component is encapsulated by the molding base.
- The camera module according to claim 5, wherein the mounting housing accommodates the photosensitive member, the movable portion is fixedly connected to a top surface of the photosensitive member, and an outer periphery of the fixed portion is fixedly connected to an inner side of an upper edge of the mounting housing.
- The camera module of claim 1, wherein the first lens structure comprises at least one lens comprising: a first lens furthest from the photosensitive assembly;the object side surface of the first lens is a plane.
- The camera module of claim 12, wherein an image side of the first lens is concave.
- A method of manufacturing an imaging module, comprising:a third lens structure is arranged on a photosensitive path of the photosensitive assembly along an optical axis;a focusing assembly is arranged on the object side of the third lens structure, wherein the focusing assembly comprises a driving part and a fixed frame, and the fixed frame is fixedly connected with the third lens structure and limits the driving part to move along the direction of the optical axis;a second lens structure is arranged on the object side of the third lens structure, wherein the second lens structure is fixedly connected with the driving part; andand arranging a first lens structure on the object side of the second lens structure.
- The method as recited in claim 14, further comprising:and the sub-optical axes of the first lens structure, the second lens structure and the third lens structure are overlapped by utilizing the machine vision and active alignment technology.
- The method as recited in claim 14, further comprising:the periphery of the photosensitive assembly is provided with an anti-shake assembly, wherein the anti-shake assembly comprises a movable part and a fixed part, the movable part is fixedly connected with the photosensitive assembly, the fixed part is fixedly connected with the third lens structure, and the movable part is limited to move on a plane perpendicular to the optical axis.
- A mobile terminal, comprising:the camera module of any one of claims 1 to 13; andthe camera module is arranged in the engine body shell and comprises a mounting hole matched with a photosensitive path of the camera module.
- The mobile terminal of claim 17, wherein an object side surface of a first lens of the at least one lens of the first lens structure, which is farthest from the photosensitive element, is in a same plane as an outer surface of the body housing.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020115023904 | 2020-12-18 | ||
| CN202011502390.4A CN114650323A (en) | 2020-12-18 | 2020-12-18 | Camera module, manufacturing method and mobile terminal |
| PCT/CN2021/137441 WO2022127735A1 (en) | 2020-12-18 | 2021-12-13 | Camera module, manufacturing method and mobile terminal |
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| CN116648901A true CN116648901A (en) | 2023-08-25 |
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| CN202011502390.4A Pending CN114650323A (en) | 2020-12-18 | 2020-12-18 | Camera module, manufacturing method and mobile terminal |
| CN202180084487.4A Pending CN116648901A (en) | 2020-12-18 | 2021-12-13 | Imaging module, manufacturing method and mobile terminal |
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| CN202011502390.4A Pending CN114650323A (en) | 2020-12-18 | 2020-12-18 | Camera module, manufacturing method and mobile terminal |
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| WO (1) | WO2022127735A1 (en) |
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| CN115118857A (en) * | 2022-06-24 | 2022-09-27 | 维沃移动通信有限公司 | Camera module, shooting control method and device, electronic equipment and storage medium |
| CN115209020B (en) * | 2022-06-27 | 2024-03-05 | 联想(北京)有限公司 | Electronic equipment and information processing method |
| CN115278008A (en) * | 2022-07-12 | 2022-11-01 | Oppo广东移动通信有限公司 | Camera module and terminal equipment |
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| JP2005275270A (en) * | 2004-03-26 | 2005-10-06 | Toshiba Corp | Lens barrel and imaging apparatus |
| CN101009773B (en) * | 2006-01-24 | 2010-10-13 | 光宝科技股份有限公司 | Digital camera module |
| KR20120047111A (en) * | 2010-11-03 | 2012-05-11 | 삼성전기주식회사 | Lens barrel driving mechanism |
| KR101634552B1 (en) * | 2014-05-23 | 2016-07-08 | 마이크로엑츄에이터(주) | Auto focusing apparatus for micro camera module |
| CN204086644U (en) * | 2014-08-25 | 2015-01-07 | 瑞声精密制造科技(常州)有限公司 | Lens driving apparatus |
| KR101896962B1 (en) * | 2016-02-04 | 2018-09-12 | 마이크로엑츄에이터(주) | Camera lens assembly |
| CN107071254A (en) * | 2017-05-31 | 2017-08-18 | 广东欧珀移动通信有限公司 | CCD camera assembly and electronic equipment |
| KR102400516B1 (en) * | 2017-06-12 | 2022-05-23 | 마이크로엑츄에이터(주) | Lens driving apparatus and camera lens module including the same |
| CN208079225U (en) * | 2018-03-14 | 2018-11-09 | 欧菲影像技术（广州）有限公司 | Focusing stabilization camera module and its wiring board mechanism |
| CN111025515A (en) * | 2018-10-10 | 2020-04-17 | 宁波舜宇光电信息有限公司 | Optical zoom camera module and assembling method thereof |
| KR102090625B1 (en) * | 2019-11-11 | 2020-03-18 | 자화전자(주) | Apparatus for auto focus and camera module including it |
| CN210781015U (en) * | 2019-12-03 | 2020-06-16 | 南昌欧菲光电技术有限公司 | Camera module and electronic equipment |
| CN116149033A (en) * | 2020-03-16 | 2023-05-23 | 华为技术有限公司 | Zoom lens, camera module and mobile terminal |
| CN111586270B (en) * | 2020-05-07 | 2022-01-18 | Oppo广东移动通信有限公司 | Imaging device and electronic apparatus |
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