CN114710612A - Camera module and electronic equipment - Google Patents

Camera module and electronic equipment Download PDF

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Publication number
CN114710612A
CN114710612A CN202210389815.8A CN202210389815A CN114710612A CN 114710612 A CN114710612 A CN 114710612A CN 202210389815 A CN202210389815 A CN 202210389815A CN 114710612 A CN114710612 A CN 114710612A
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China
Prior art keywords
lens
driving
transmission
assembly
camera module
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Pending
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CN202210389815.8A
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Chinese (zh)
Inventor
李海宝
陈明
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Application filed by Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Priority to CN202210389815.8A priority Critical patent/CN114710612A/en
Publication of CN114710612A publication Critical patent/CN114710612A/en
Pending legal-status Critical Current

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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
    • 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
    • H04N23/52—Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/58—Means for changing the camera field of view without moving the camera body, e.g. nutating or panning of optics or image sensors

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Studio Devices (AREA)

Abstract

The application discloses module and electronic equipment make a video recording, above-mentioned module of making a video recording includes: the lens driving device comprises a mounting seat, a lens component, a driving component and a transmission component; the mounting base is provided with a first accommodating cavity, and at least part of the lens assembly is arranged in the first accommodating cavity and can move relative to the mounting base along the optical axis direction of the camera module; the driving component is arranged on the mounting seat, the driving component is movably connected with the first end of the transmission piece, and the second end of the transmission piece is movably connected with the lens component; the driving component is used for driving the first end of the transmission component to reciprocate along a preset path, so that the second end of the transmission component drives the lens component to move between a first position and a second position; under the condition that the lens subassembly is in the first position, the extending direction and the optical axis direction of driving medium form first contained angle, under the condition that the lens subassembly is in the second position, the extending direction and the optical axis direction of driving medium form the second contained angle, and first contained angle is greater than the second contained angle.

Description

Camera module and electronic equipment
Technical Field
The application belongs to the technical field of electronics, concretely relates to module and electronic equipment make a video recording.
Background
At present, for electronic equipment such as mobile phones and tablet computers, the distance of a lens relative to a photosensitive device is changed mainly by controlling the extension and contraction of the lens of a camera module, so that the optical zooming of the camera module is realized, and the purpose of shooting a scene is achieved.
In the related art, when the scenery is shot, the telescopic driving structure mainly controls the telescopic of the lens in a rotary driving mode, and the telescopic driving structure not only occupies a large space, has a complex structure and high manufacturing cost, but also is difficult to control the telescopic of the lens conveniently.
Disclosure of Invention
The application aims at providing a module and electronic equipment make a video recording, and the flexible drive structure who solves current module of making a video recording at least has the structure complicacy, is difficult to the flexible problem of control camera lens conveniently.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a camera module, including: the lens driving device comprises a mounting seat, a lens component, a driving component and a transmission component;
the mounting seat is provided with a first accommodating cavity, and at least part of the lens assembly is arranged in the first accommodating cavity and can move along the optical axis direction of the camera module relative to the mounting seat;
the driving component is arranged on the mounting seat, the driving component is movably connected with the first end of the transmission piece, and the second end of the transmission piece is movably connected with the lens component; the driving component is used for driving the first end of the transmission component to move back and forth along a preset path, so that the second end of the transmission component drives the lens component to move from a first position to a second position, or move from the second position to the first position;
wherein the lens subassembly is in under the condition of first position, the extending direction of driving medium with the optical axis direction forms first contained angle the lens subassembly is in under the condition of second position, the extending direction of driving medium with the optical axis direction forms the second contained angle, first contained angle is greater than the second contained angle.
In a second aspect, an embodiment of the present application provides an electronic device, which includes a housing and the camera module described in any one of the above, where the camera module is mounted on the housing.
In the embodiment of this application, drive assembly passes through the driving medium and drives the lens subassembly and remove along the optical axis direction for the mount pad, when the first end of drive assembly drive driving medium was along predetermineeing route reciprocating motion, the contained angle of extending direction and optical axis direction of driving medium changed thereupon to under the linkage effect of driving medium, the second end of driving medium drives the lens subassembly and follows optical axis direction reciprocating motion between primary importance and second place, switch between retraction state and the state of stretching out for the mount pad with the control lens subassembly conveniently. Here, because this application adopts the action of drive assembly control driving medium to the realization is to the flexible control of the camera lens of the module of making a video recording, compare in the flexible control scheme of current adoption rotation drive mode control camera lens, the flexible drive structure of the module of making a video recording in this application embodiment not only structure is comparatively simple, low in manufacturing cost, can control the flexible of camera lens moreover conveniently. Moreover, the installation seat-based camera module is more favorable for optimizing the arrangement of the driving component and the transmission part, so that the size of the camera module is reduced as much as possible.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is an exploded schematic view of a first camera module according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a first camera module according to an embodiment of the present application;
FIG. 3 is a schematic view of a mounting structure of a drive assembly in a mounting seat according to an embodiment of the application;
fig. 4 is a schematic structural view of a lens guide in a mount according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a lens assembly according to an embodiment of the present application;
fig. 6 is an exploded view of a lens assembly according to an embodiment of the present application;
fig. 7 is a schematic structural view illustrating that the first position-limiting portion abuts against the third position-limiting portion when the lens assembly is in the extended state according to the embodiment of the present application;
fig. 8 is a schematic structural view illustrating the first position-limiting portion and the second position-limiting portion abutting against each other when the lens assembly is in the retracted state according to the embodiment of the present application;
FIG. 9 is an exploded view of a lens assembly assembled with a mount according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a second camera module according to an embodiment of the present application;
fig. 11 is a second schematic structural diagram of a second camera module according to an embodiment of the present application;
FIG. 12 is a schematic structural diagram of a lens assembly relative to a mount when a slider of a lead screw drive mechanism is moved to a position P1 according to an embodiment of the present application;
FIG. 13 is a schematic cross-sectional view of the lens assembly relative to the mount when the slider of the lead screw actuator is moved to the position P1 according to the embodiment of the present application;
fig. 14 is a schematic structural diagram of the lens assembly relative to the mount when the slider of the lead screw mechanism is moved to the P2 position according to the embodiment of the present application;
FIG. 15 is a schematic cross-sectional view of the lens assembly relative to the mount when the slider of the lead screw actuator is moved to the position P2 according to the embodiment of the present application;
FIG. 16 is a schematic structural diagram of a lens assembly relative to a mount when a slider of a lead screw drive mechanism is moved to a position P3 according to an embodiment of the present application;
FIG. 17 is a schematic cross-sectional view of the lens assembly relative to the mount when the slider of the lead screw actuator is moved to the position P3 according to the embodiment of the present application;
reference numerals are as follows: 100: a mounting seat; 200: a lens assembly; 300: a drive assembly; 400: a transmission member; 500: a photosensitive assembly; 600: detecting a probe; 700: a grating scale; 800: a first guide structure; 900: a second guide structure; 11: a lens guide; 12: a base; 101: a first accommodating chamber; 102: a second accommodating chamber; 121: a first cavity section; 122: a second cavity section; 123: a third cavity section; 21: a lens; 22: a lens holder; 221: a lens barrel; 201: a first limiting part; 202: a second limiting part; 203: a third limiting part; 211: an elastic connecting member; 301: a first rotary drive member; 302: a lead screw transmission mechanism; 303: a corner transmission mechanism; 321: a lead screw; 322: a slider; 323: a slide rail; 311: a second rotary drive; 312: a cam; 81: a first guide groove; 82: a first guide block; 91: a second guide groove; 92: and a second guide block.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be understood that the terms "length," "width," "inner," "outer," etc. indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The following describes a camera module and an electronic device according to an embodiment of the present application with reference to fig. 1 to 17.
As shown in fig. 1 and 2, a camera module according to some embodiments of the present application includes: mount 100, lens assembly 200, driving assembly 300, and transmission member 400.
The mount 100 is provided with a first accommodating chamber 101, and at least a part of the lens assembly 200 is disposed in the first accommodating chamber 101 and is movable relative to the mount 100 in the optical axis direction of the camera module. The driving assembly 300 is disposed in the mounting base 100, the driving assembly 300 is movably connected to a first end of the transmission member 400, and a second end of the transmission member 400 is movably connected to the lens assembly 200; the driving assembly 300 is configured to drive the first end of the driving member 400 to move back and forth along a predetermined path, so that the second end of the driving member 400 drives the lens assembly 200 to move from the first position to the second position along the optical axis, or to move from the second position to the first position, so that the lens assembly 200 is switched between the retracted state and the extended state relative to the mount 100.
When the first end of the transmission member 400 is located at the first end of the preset path, the lens assembly 200 is located at the first position, the extending direction of the transmission member 400 forms a first included angle with the optical axis direction, and at this time, the lens assembly 200 is located in a retraction state in the first accommodating cavity 101 relative to the mount 100; when the first end of the transmission member 400 is located at the second end of the preset path, the lens assembly 200 is located at the second position, the extending direction of the transmission member 400 forms a second included angle with the optical axis direction, and at this time, the lens assembly 200 is located in an extending state outside the first accommodating cavity 101 relative to the mounting base 100.
Here, the first included angle shown in this embodiment is larger than the second included angle. In order to facilitate the telescopic control of the lens assembly 200, the first included angle may be set to be smaller than or equal to 90 ° and the second included angle may be set to be greater than or equal to zero.
In this way, when the driving assembly 300 drives the first end of the transmission member 400 to move along the extending direction from the first end to the second end of the predetermined path, the lens assembly 200 is switched from the retracted state to the extended state. Accordingly, when the driving member 300 drives the first end of the transmission member 400 to move along the extending direction from the second end to the first end of the preset path, the lens assembly 200 is switched from the extended state to the retracted state.
It can be seen that, in the embodiment of the present application, the driving component 300 drives the lens component 200 to move along the optical axis direction relative to the mounting base 100 through the transmission component 400, when the first end of the driving component 300 driving the transmission component 400 moves back and forth along the predetermined path, the included angle between the extending direction of the transmission component 400 and the optical axis direction changes accordingly, based on the guidance of the mounting base 100 on the lens component 200 moving along the optical axis direction, under the linkage effect of the transmission component 400, the second end of the transmission component 400 drives the lens component 200 to move back and forth along the optical axis direction, so as to conveniently control the lens component 200 to switch between the retraction state and the extension state relative to the mounting base 100.
Because this application adopts drive assembly 300 to control the action of driving medium 400 to the flexible of the camera lens of the module of making a video recording of realization, compare in the current rotatory drive mode of adoption control camera lens flexible, perhaps directly follow the flexible control scheme of optical axis direction control camera lens, the flexible drive structure of the module of making a video recording in this application embodiment is simple structure not only, low in manufacturing cost is honest and clean, can control the flexible of camera lens moreover conveniently. Moreover, the driving component 300 and the transmission piece 400 are optimized and arranged based on the mounting seat 100, so that the size of the camera module is reduced as much as possible, and the user experience is improved.
It should be noted that the present embodiment may rotatably connect the output end of the driving component 300 and the first end of the transmission component 400 through a pin, and rotatably connect the second end of the transmission component 400 and the lens component 200 through a pin. Of course, the present embodiment may connect the output end of the driving member 300 and the first end of the transmission member 400 through a ball joint, and connect the second end of the transmission member 400 and the lens assembly 200 through a ball joint.
The type of the driving member 300 is determined according to the type of the predetermined path corresponding to the first end of the transmission member 400 moving, and the transmission member 400 may be a connecting rod known in the art.
In the case that the preset path is a linear path, the driving assembly 300 may select a linear driving mechanism known in the art, for example, the linear driving mechanism may be a linear motor or a telescopic driving mechanism. In the case where the predetermined path is a circular arc path, the driving assembly 300 may include a rotary driving mechanism as well known in the art.
In some embodiments, the driving assembly 300 of the present application is configured to drive the first end of the transmission member 400 to reciprocate along a linear path in a first plane, where the first plane is perpendicular to the optical axis of the camera module. In this embodiment, a straight path may be provided and may specifically extend along the length direction or the width direction of the mounting base 100.
Thus, the driving assembly 300 can be disposed in the mounting base 100, and the first end of the transmission member 400 can be controlled to reciprocate along the length direction or the width direction of the mounting base 100, so that the lens assembly 200 can be stably controlled to reciprocate along the optical axis direction of the camera module relative to the mounting base 100 under the linkage of the transmission member 400.
Meanwhile, in the embodiment of the present application, the first end of the driving member 400 of the driving assembly 300 is set to reciprocate along the linear path in the first plane, so that the driving assembly 300 is optimally arranged on the mounting base 100, and the telescopic state of the lens assembly 200 is controlled in a linkage manner according to the movement of the first end of the driving member 400 along the linear path, thereby organically combining the driving assembly 300 and the driving member 400 together and realizing the miniaturization design of the camera module.
Further, in order to facilitate the control of the first end of the transmission member 400 to reciprocate along the linear path, the driving assembly 300 of the present embodiment includes a first rotary driving member 301 and a lead screw transmission mechanism 302. Wherein the first rotary drive 301 may be a servo motor as known in the art.
As shown in fig. 2 and 3, the screw transmission mechanism 302 includes a screw 321, a slider 322, and a slide 323. The screw 321 is rotatably mounted on the mount 100. The slide rail 323 is disposed on the mounting base 100 and is located at one side of the screw 321. The lead screw 321 and the slide rail 323 extend in the extending direction of the linear path. The slider 322 is in threaded connection with the lead screw 321, and the slider 322 is slidably disposed on the slide rail 323 along the extending direction of the slide rail 323. The output end of the first rotary driving member 301 is connected to one end of the screw 321, and the slider 322 is rotatably connected to the first end of the transmission member 400.
In actual operation, when the first rotary driving element 301 drives the lead screw 321 to rotate, since the slider 322 is slidably disposed on the slide rail 323, the slider 322 does not rotate along with the lead screw 321 under the guidance of the slide rail 323, but moves along the slide rail 323 under the driving of the lead screw 321. Obviously, when the first rotary driving element 301 drives the lead screw 321 to rotate along different rotation directions, the slider 322 can be controlled to reciprocate along the slide rail 323.
Thus, during the reciprocating movement of the sliding block 322, the first end of the transmission member 400 is driven to reciprocate along the extending direction of the sliding rail 323, so that the second end of the transmission member 400 drives the lens assembly 200 to reciprocate along the optical axis direction.
Here, the embodiment of the present application provides the rotational driving based on the first rotational driving member 301, and drives the first end of the driving member 400 to reciprocate along the extending direction of the sliding rail 323 through the lead screw transmission mechanism 302, so that not only the stability of the movement of the first end of the driving member 400 along the linear path can be ensured, but also the position of the movement of the first end of the driving member 400 can be accurately controlled based on the rotation angle of the first rotational driving member 301, thereby stably controlling the movement position of the lens assembly 200 along the optical axis direction.
Further, in some embodiments, in order to more stably control the lens assembly 200 to reciprocate along the optical axis direction, the first rotary driving member 301 shown in this embodiment is provided with two output ends capable of synchronously rotating, and the two output ends can realize synchronous rotation; accordingly, two screw mechanisms 302 are provided in one-to-one correspondence with the transmission members 400. The first rotary driving element 301 may be a two-axis extension motor.
Here, in the present embodiment, the two output ends of the first rotary driving member 301 are connected to the lead screws 321 of the two lead screw transmission mechanisms 302 in a one-to-one correspondence, and the two lead screw transmission mechanisms 302 are respectively disposed on the opposite sides of the lens assembly 200, so as to synchronously drive the lens assembly 200 to move through the two transmission members 400 disposed on the opposite sides of the lens assembly 200.
Thus, when the two output ends of the first rotary driving member 301 rotate synchronously, the distance that the sliders 322 on the two lead screw transmission mechanisms 302 drive the first ends of the two transmission members 400 to move synchronously along the linear path can be controlled by controlling the rotation angle of the first rotary driving member 301, so that when the second ends of the two transmission members 400 drive the lens assembly 200 to move synchronously on the opposite side of the lens assembly 200, not only the stability of the movement of the lens assembly 200 relative to the mounting base 100 is ensured, but also the distance of the movement of the lens assembly 200 along the optical axis direction can be accurately controlled.
In some embodiments, in order to facilitate outputting driving force for two lead screw transmission mechanisms 302 simultaneously based on the same first rotary driving member 301, in this embodiment, the rotation axis of the first rotary driving member 301 is perpendicular to the rotation axis of the lead screw 321 of the lead screw transmission mechanism 302, the two lead screw transmission mechanisms 302 are arranged at intervals along the rotation axis of the first rotary driving member 301, and the two output ends of the first rotary driving member 301 are connected to the lead screws 321 of the two lead screw transmission mechanisms 302 through the rotation angle transmission mechanisms 303 respectively.
Here, the rotational angle transmission mechanism 303 shown in the present embodiment includes any one of a cylindrical transmission mechanism, a worm gear transmission mechanism, and a helical gear transmission mechanism.
The corner transmission mechanism 303 shown in this embodiment is preferably a cylindrical transmission mechanism because the cylindrical transmission mechanism occupies a small space and has a good corner transmission performance. Accordingly, the present embodiment connects the output end of the first rotary driving element 301 to one end of the cylindrical surface transmission mechanism, and connects the other end of the cylindrical surface transmission mechanism to one end of the lead screw 321 on the lead screw transmission mechanism 302.
Based on the solution of the above embodiment, as shown in fig. 3 and fig. 4, in order to facilitate the control of the extension and retraction of the lens assembly 200 and the implementation of the installation of the driving assembly 300, the mount 100 of the embodiment is provided with a first accommodating cavity 101 and a second accommodating cavity 102.
One side of the first accommodating cavity 101 facing the lens assembly 200 is open, and at least a portion of the lens assembly 200 is disposed in the first accommodating cavity 101. When the first end of the transmission member 400 is at the first end of the predetermined path, the lens assembly 200 is in a retracted state with respect to the mounting base 100 and is located in the first accommodating cavity 101. When the first end of the transmission member 400 is located at the second end of the predetermined path, the lens assembly 200 is in an extended state relative to the mounting base 100 and is located outside the first accommodating cavity 101.
Meanwhile, the present embodiment also provides the driving assembly 300 in the second receiving cavity 102, and the second receiving cavity 102 may be adaptively provided according to the arrangement structure of the driving assembly 300.
In some embodiments, the second accommodating chamber 102 shown in the present embodiment is disposed outside the area where the first accommodating chamber 101 is located, and the second accommodating chamber 102 includes a first chamber section 121, a second chamber section 122, and a third chamber section 123.
The first cavity section 121, the second cavity section 122 and the third cavity section 123 are sequentially connected, and the first cavity section 121 and the third cavity section 123 are respectively disposed on opposite sides of the lens assembly 200.
Here, the second cavity segment 122 is close to the first side of the first receiving cavity 101, the first cavity segment 121 is close to the second side of the first receiving cavity 101, the third cavity segment 123 is close to the third side of the first receiving cavity 101, the first side of the first receiving cavity 101 is perpendicular to the second side and the third side of the first receiving cavity 101, respectively, and the second side and the third side of the first receiving cavity 101 are parallel to each other.
As such, the first and third cavity sections 121 and 123 may be separately provided on opposite sides of the lens assembly 200 based on the arrangement structure of the first and third cavity sections 121 and 123 with respect to the first accommodation chamber 101.
Further, based on the arrangement structure of the second accommodating cavity 102, the present embodiment may be configured to provide the first rotary driving member 301 on the second cavity segment 122, provide the rotation angle transmission mechanism 303 on the joint of the first cavity segment 121 and the second cavity segment 122 and the joint of the second cavity segment 122 and the third cavity segment 123, and provide the screw rod transmission mechanisms 302 on the first cavity segment 121 and the third cavity segment 123 in a one-to-one correspondence manner.
As shown in fig. 1, the mount 100 shown in this embodiment is composed of a lens guide frame 11 and a base 12, the lens guide frame 11 and the base 12 are assembled into a whole along the optical axis direction of the camera module, a first accommodating cavity 101 and a second accommodating cavity 102 shown in the above embodiment are formed between the lens guide frame 11 and the base 12, and the lens guide frame 11 and the lens assembly 200 are slidably connected along the optical axis direction of the camera module.
In some embodiments, in order to facilitate automatic focus control of the image capturing module, the image capturing module shown in this embodiment is further provided with a photosensitive assembly 500, a detection probe 600, a grating scale 700, and a control module.
The output end of the driving assembly 300 is movably connected with the first end of the driving member 400 to drive the first end of the driving member 400 to reciprocate along a linear path; the grating scale 700 is arranged at one side of the output end of the driving assembly 300 and extends along the extension direction of the linear path; the detection probe 600 is used to read the position information of the output end of the driving assembly 300 relative to the grating scale 700.
The photosensitive assembly 500 is arranged on the mounting base 100, and the lens assembly 200 and the photosensitive assembly 500 are oppositely arranged along the optical axis direction; the photosensitive assembly 500 and the detection probe 600 are respectively connected with a control module, and the control module is connected with the driving assembly 300.
In practical application, when the reflected light of the target object passes through the lens assembly 200 in the external environment, and is received by the photosensitive assembly 500, the photosensitive assembly 500 can convert the received optical signal into an electrical signal or a digital signal and transmit the electrical signal to the control module, the control module can preliminarily calculate the distance between the target object and the lens 21 on the lens assembly 200 according to the feedback signal of the photosensitive assembly 500, and according to the internal structure of the camera module, the target position of the output end of the driving assembly 300 relative to the grating scale 700 is calculated, so as to meet the focusing requirement of the camera module. Then, the control module can control the output end of the driving assembly 300 to move to the target position according to the actual position of the output end of the driving assembly 300 relative to the grating scale 700 fed back by the detection probe 600, so as to complete the automatic focusing control of the camera module.
In some embodiments, the present embodiment can also optimize the arrangement of the detection probe 600 and the grating scale 700 based on the lead screw transmission mechanism 302 shown in the above embodiments.
As shown in fig. 2, in the present embodiment, a grating scale 700 is disposed on the slide rail 323, and the grating scale 700 is disposed along the extending direction of the slide rail 323. The detection probe 600 is arranged on the sliding block 322 to read the position information of the sliding block 322 relative to the grating scale 700; the photosensitive assembly 500 is disposed on the mounting base 100, and the lens assembly 200 and the photosensitive assembly 500 are disposed opposite to each other along the optical axis direction. The photosensitive assembly 500 and the detection probe 600 are respectively connected with a control module, and the control module is connected with the first rotary driving member 301.
Thus, based on the above arrangement, in practical applications, the control module of the embodiment of the present application initially calculates the distance between the target object and the lens 21 on the lens assembly 200 according to the feedback signal of the photosensitive assembly 500, and calculates the target position of the slider 322 relative to the grating scale 700 according to the internal structure of the camera module, so as to satisfy the focusing requirement of the camera module. Then, the control module can control the rotation angle of the first rotary driving element 301 according to the current position information of the slider 322 relative to the grating scale 700 fed back by the detection probe 600, so that the slider 322 moves to the target position, thereby completing the automatic focusing control of the image pickup module.
It should be noted that the photosensitive assembly 500 shown in the present embodiment is disposed in the first accommodating cavity 101 of the mounting base 100, and the photosensitive assembly 500 at least includes a photosensitive element, and the photosensitive element and the lens assembly 200 are disposed opposite to each other along the optical axis direction. Here, the photosensitive element may be a Charge Coupled Device (CCD). The photosensitive assembly 500 may further include a focusing lens 21, and the focusing lens 21 is disposed between the lens assembly 200 and the photosensitive element along the optical axis direction.
Meanwhile, the detection probe 600 shown in the present embodiment may be an infrared sensor known in the art, or may be a micro camera. When the camera module is applied to the electronic equipment, the control module can be a control chip on the electronic equipment.
In some embodiments, the predetermined path shown in the above embodiments may also be a circular arc path.
Accordingly, in this case, the driving assembly 300 of the present embodiment is used to drive the first end of the driving member 400 to move back and forth along the circular arc path at one side of the optical axis of the camera module, so that the second end of the driving member 400 drives the lens assembly 200 to move back and forth along the optical axis.
In order to ensure that the lens assembly 200 is located at the first position when the first end of the transmission member 400 is located at the first end of the circular arc path, at this time, the lens assembly 200 is located in a retracted state relative to the mount 100, and when the first end of the transmission member 400 is located at the second end of the circular arc path, the lens assembly 200 is located at the second position, at this time, the lens assembly 200 is located at an extended state relative to the mount 100, in this embodiment, at least, it should be ensured that the optical axis of the camera module is parallel to or coplanar with the plane where the circular arc path is located, and the central angle of the circular arc path is smaller than 90 °.
As shown in fig. 10, when the lens assembly 200 is at the first position, the extending direction of the transmission member 400 forms a first included angle θ with the optical axis direction1. As shown in fig. 11, when the lens assembly 200 is at the second position, the extending direction of the transmission member 400 forms a second included angle θ with the optical axis direction2。
Since the driving component 300 and the transmission component 400 are installed in the mounting seat 100, the first included angle θ1Greater than the second included angle theta2The lens assembly 200 can be ensured to be in the retracted state in the first position and in the extended state in the second position.
Alternatively, as shown in fig. 10 and 11, the driving assembly 300 of the present embodiment includes a second rotary driving member 311 and a cam 312; the output end of the second rotary driving member 311 is connected to one end of the cam 312, and the other end of the cam 312 is rotatably connected to the first end of the transmission member 400.
Here, the second rotary drive 311 may be a servo motor as is well known in the art.
As shown in fig. 11, when the output end of the second rotary driving element 311 rotates in the first rotation direction by a preset angle, the other end of the cam 312 drives the first end of the transmission element 400 to be at the position of the top dead center M of the movement of the cam 312, so that the lens assembly 200 is in an extended state relative to the mount 100 under the drive of the second end of the transmission element 400.
Accordingly, as shown in fig. 10, when the output end of the second rotary driving element 311 rotates in the second rotation direction by a preset angle, the other end of the cam 312 drives the first end of the transmission element 400 to be at the position of the bottom dead center N of the movement of the cam 312, so that the lens assembly 200 is in the retracted state relative to the mount 100 under the drive of the second end of the transmission element 400. The first rotation direction and the second rotation direction shown in the present embodiment are opposite.
Based on the solution of the above embodiment, as shown in fig. 2, 5 and 6, the lens assembly 200 of the present embodiment includes a lens 21 and a lens holder 22; a light-passing channel is formed in the lens holder 22, and the lens 21 is arranged at one end of the light-passing channel, which is far away from the mounting base 100; a first guide structure 800 is provided between the mount 100 and the lens holder 22 to enable the lens assembly 200 to move in the optical axis direction with respect to the mount 100; the second end of the transmission member 400 is located in the light-passing channel and is rotatably connected to the lens holder 22.
Here, this embodiment is through locating the at least partial structure with driving medium 400 in leading to the light passageway, can be under the normal condition of making a video recording the function of module, drive lens subassembly 200 along optical axis direction reciprocating motion by the second end of driving medium 400 to realize making a video recording module overall structure integrate and miniaturized design.
In addition, as shown in fig. 2, 5 and 6, in order to facilitate the lens assembly 200 to move along the optical axis direction relative to the mount 100, the first guiding structure 800 shown in this embodiment may be a first guiding groove 81 and a first guiding block 82 respectively disposed on the lens holder 22 and the mount 100, the first guiding groove 81 extends along the optical axis direction, the first guiding groove 81 may be specifically a dovetail groove, and the first guiding block 82 is structurally matched with the first guiding groove 81 and slidably disposed in the first guiding groove 81.
In this embodiment, the first guide slot 81 is disposed on the mounting base 100, and the first guide block 82 is disposed on the lens holder 22.
In some embodiments, in order to facilitate the control of the focusing distance of the lens 21 on the camera module, the lens holder 22 is configured to be composed of a plurality of lens barrels 221; the plurality of lens barrels 221 are sequentially sleeved from inside to outside, and two adjacent ones of the plurality of lens barrels 221 can relatively move along the optical axis direction, so that the lens holder 22 can be switched between an extended state and a retracted state.
Accordingly, in the case where the lens holder 22 includes a plurality of lens barrels 221, in order to control the lens assembly 200 to reciprocate in the optical axis direction with respect to the mount 100, the present embodiment provides the lens 21 at one of the plurality of lens barrels 221 that is located at the innermost side, rotatably connects the second end of the transmission member 400 with one of the plurality of lens barrels 221 that is located at the innermost side, and provides the first guide structure 800 between the mount 100 and one of the plurality of lens barrels 221 that is located at the outermost side.
Thus, when the second end of the transmission member 400 moves towards the side far from the mounting base 100 along the optical axis direction, because the second end of the transmission member 400 is rotatably connected with the innermost one of the lens barrels 221, the lens barrels 221 move from inside to outside in sequence towards the side far from the mounting base 100 and assume an extended state until the outermost one of the lens barrels 221 extends out of the first accommodating cavity 101, so that the lens holder 22 reaches the extended state.
On the contrary, when the second end of the transmission member 400 moves toward the side close to the mount 100 along the optical axis direction, the plurality of lens barrels 221 move toward the side close to the mount 100, so that the lens holder 22 reaches the retracted state.
The lens holder 22 shown in this embodiment includes at least two lens barrels 221. For example, the number of lens barrels 221 provided may be two, three, etc., and is not particularly limited herein.
In some embodiments, as shown in fig. 5 and fig. 6, the second guiding structure 900 may be disposed between two adjacent lens barrels 221; the second guiding structure 900 is adapted to guide adjacent two of the plurality of lens barrels 221 to move relatively in the optical axis direction.
Alternatively, the second guide structure 900 may be a second guide groove 91 and a second guide block 92 respectively disposed between two adjacent lens barrels 221, the second guide groove 91 extends along the optical axis direction, the second guide groove 91 may be a dovetail groove, and the second guide block 92 is structurally matched with the second guide groove 91 and slidably disposed in the second guide groove 91.
In some embodiments, in order to prevent the adjacent two of the lens barrels 221 from being separated when moving relatively along the optical axis direction, the present embodiment provides a position limiting structure between the adjacent two of the lens barrels 221.
Optionally, as shown in fig. 6, the limiting structure includes a first limiting portion 201, a second limiting portion 202, and a third limiting portion 203; the first position-limiting portion 201 is disposed at one of the lens barrels 221 adjacent to each other, the second position-limiting portion 202 and the third position-limiting portion 203 are disposed at two ends of the other lens barrel 221 adjacent to each other along the optical axis direction of the camera module, the second position-limiting portion 202 is close to the mounting base 100, and the third position-limiting portion 203 is far away from the mounting base 100.
As shown in fig. 7, when the lens holder 22 is in the extended state, the first stopper portion 201 abuts against the third stopper portion 203 to prevent adjacent two of the plurality of lens barrels 221 from being further apart from each other in the optical axis direction.
As shown in fig. 8, when the lens holder 22 is in the retracted state, the first stopper portion 201 abuts against the second stopper portion 202 to prevent adjacent ones of the plurality of lens barrels 221 from being further retracted from each other in the optical axis direction.
In some embodiments, as shown in fig. 6, in the present embodiment, the first position-limiting portion 201 is disposed on the second guide block 92, and the second position-limiting portion 202 and the third position-limiting portion 203 are disposed at two ends of the second guide slot 91 along the optical axis direction, so as to implement an integrated design of the second guide structure 900 and the position-limiting structure between two adjacent lens barrels 221.
The first limiting portion 201 can be a limiting rod, the limiting rod is inserted into the second guide block 92, and the axial direction of the limiting rod is perpendicular to the optical axis direction of the camera module.
In some embodiments, as shown in fig. 9, the present embodiment may further include an elastic connection member 211 between the mount 100 and one of the plurality of lens barrels 221 located at the outer side.
As shown in fig. 1, the mount 100 includes a lens guide frame 11 and a base 12, and the first guiding structure 800 includes a first guiding groove 81 and a first guiding block 82, in the case that the first guiding groove 81 is disposed on the lens guide frame 11, and the first guiding block 82 is disposed on one of the lens barrels 221 that is located on the outermost side, in order to facilitate the arrangement of the elastic connection member 211, the first guiding block 82 may be disposed on one end of one of the lens barrels 221 that is located on the outermost side, the end being close to the base 12, and one end of the elastic connection member 211 is connected to the first guiding block 82, and the other end of the elastic connection member 211 is connected to the lens guide frame 11.
In this way, when the lens assembly 200 is in the retracted state, the elastic connection member 211 is in the initial state, and the elastic connection member 211 can ensure that the lower end of one of the lens barrels 221 located at the outermost side maintains a certain distance from the upper surface of the mounting base.
Accordingly, when the driving assembly 300 controls the lens assembly 200 to switch from the retracted state to the extended state through the transmission member 400, based on the arrangement of the elastic connection member 211, the plurality of lens barrels 221 can be sequentially moved from inside to outside toward the side away from the mount 100 and assume the extended state until one of the plurality of lens barrels 221 which is outermost extends from the first accommodation chamber 101, so that the lens holder 22 reaches the extended state.
In the process that one of the lens barrels 221, which is the outermost one, protrudes from the first accommodation chamber 101, the elastic connection member 211 is gradually compressed until the elastic connection member 211 is in a compressed state when the lens assembly 200 is in the protruding state. For this reason, the amount of deformation of the elastic connection member 211 in the compressed state is greater than that of the elastic connection member 211 in the initial state.
Obviously, when the lens holder 22 is controlled to extend, the present embodiment may control the sequence of extending the lens barrels 221 toward the side away from the mounting seat based on the elastic connection member 211, and when the lens holder 22 is controlled to retract, the elastic connection member 211 may assist the acceleration of retracting the lens barrels 221 into the mounting seat based on the restoring force on the elastic connection member 211.
The elastic connecting member 211 shown in this embodiment is preferably a spring, and the axial direction of the spring can be set along the optical axis direction of the camera module in this embodiment. When the spring is in the initial state, the spring may be in a natural extension state or a stretching state, and is not particularly limited herein.
Here, in the present application, switching between the retracted state and the extended state of the lens unit 200 will be specifically described by taking the two lens barrels 221 as an example and referring to fig. 12 to 17. The present embodiment is based on the slider 322 of the screw transmission mechanism 302 for controlling the first end of the transmission member 400 to reciprocate along a linear path.
As shown in fig. 12 and 13, when the lens assembly 200 is in the retracted state, the slider 322 is in the position of P1 on the slide rail 323. At this time, the end of the lens assembly 200 where the lens 21 is located is flush with the upper surface of the mounting base 100, the elastic connection member 211 is in an initial state, and the extending direction of the transmission member 400 forms a first angle α with respect to the horizontal plane where the mounting base 100 is located. At this time, the first included angle θ shown in the above embodiment1Equal to 90 deg. -alpha.
As shown in fig. 14 and 15, when the slider 322 moves from the position P1 to the position P2 along the extending direction of the slide rail 323, the lens barrel 221 of the lens assembly 200 located inside completely extends out of the first accommodating cavity 101 of the mount 100 under the interlocking action of the transmission member 400. At this time, since the lens barrel 221 of the lens assembly 200, which is located at the outer side, is still located in the first accommodating cavity 101, the elastic connection member 211 is in an initial state, an included angle of the transmission member 400 with respect to a horizontal plane where the mounting base 100 is located is a second angle β, and the first angle α is smaller than the second angle β.
As shown in fig. 16 and fig. 17, when the slider 322 continues to move from the P2 position to the P3 position along the extending direction of the sliding rail 323, the lens barrel 221 on the outer side of the lens assembly 200 is gradually away from the mount 100 along the optical axis direction by the lens barrel 221 on the inner side of the lens assembly 200 until extending out of the first accommodating cavity 101, so that the lens assembly 200 is in the extended state. At this time, the elastic connection member 211 is in a compressed state, the included angle of the transmission member 400 relative to the horizontal plane of the mounting seat 100 is a third angle γ, the second angle β is smaller than the third angle γ, and the second included angle θ shown in the above embodiment is2Equal to 90 ° - γ.
Obviously, during the process that the sliding block 322 moves from the position P1 to the position P3 along the extending direction of the sliding rail 323, the included angle of the extending direction of the transmission member 400 relative to the horizontal plane of the mounting seat 100 increases from the first angle α to the third angle γ, so that the included angle of the extending direction of the transmission member 400 relative to the optical axis direction is increased from the first included angle θ1Decrease to a second included angle theta2。
When the slider 322 is at the position P1, the extending direction of the transmission member 400 forms a first angle θ with respect to the optical axis direction1The lens assembly 200 is in a retracted state in the first accommodating cavity 101 relative to the mounting base 100; when the slider 322 is at the position P3, the extending direction of the transmission member 400 forms a first included angle θ with respect to the optical axis direction2The lens assembly 200 is in an extended state outside the first accommodation chamber 101 with respect to the mount 100.
Accordingly, when the slider 322 of the screw transmission mechanism 302 moves the first end of the transmission member 400 from the P3 position to the P1 position, the lens assembly 200 gradually retracts toward the first accommodating cavity 101, and under the restoring force of the elastic connection member 211, the two lens barrels 221 of the lens assembly 200 simultaneously retract toward the first accommodating cavity 101, so that the lens assembly 200 is rapidly switched from the extended state to the retracted state.
In some embodiments, an electronic device is further provided in an embodiment of the present application, including a housing and the camera module described in any of the above embodiments, where the camera module is mounted on the housing.
Since the electronic device includes the camera module, and the specific structure of the camera module can refer to the above embodiments, the electronic device according to the embodiments of the present application includes all the technical solutions of the above embodiments, and therefore, at least all the beneficial effects brought by all the technical solutions of the above embodiments are achieved, and are not repeated here.
It should be noted that the electronic device in the embodiment of the present application may be a mobile phone, a tablet computer, a camera, an unmanned aerial vehicle, a monitoring device, or other electronic devices with a camera shooting function.
In the description herein, references to the description of the terms "some embodiments," "optionally," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. The utility model provides a module of making a video recording which characterized in that includes:
the lens driving device comprises a mounting seat, a lens component, a driving component and a transmission component;
the mounting seat is provided with a first accommodating cavity, and at least part of the lens assembly is arranged in the first accommodating cavity and can move along the optical axis direction of the camera module relative to the mounting seat;
the driving component is arranged on the mounting seat, the driving component is movably connected with the first end of the transmission piece, and the second end of the transmission piece is movably connected with the lens component; the driving component is used for driving the first end of the transmission component to reciprocate along a preset path, so that the second end of the transmission component drives the lens component to move from a first position to a second position, or move from the second position to the first position;
wherein the lens subassembly is in under the condition of first position, the extending direction of driving medium with the optical axis direction forms first contained angle the lens subassembly is in under the condition of second position, the extending direction of driving medium with the optical axis direction forms the second contained angle, first contained angle is greater than the second contained angle.
2. The camera module of claim 1,
the driving component is used for driving the first end of the transmission part to reciprocate in a first plane along a linear path, and the first plane is perpendicular to the direction of the optical axis of the camera module.
3. The camera module of claim 1,
the driving assembly comprises a first rotary driving piece and a lead screw transmission mechanism;
the lead screw transmission mechanism comprises a lead screw, a sliding block and a sliding rail; the lead screw and the slide rail are arranged side by side and extend along the same direction, the slide block is in threaded connection with the lead screw, and the slide block is slidably arranged on the slide rail along the extending direction of the slide rail; the output end of the first rotary driving piece is connected with one end of the screw rod, and the sliding block is rotatably connected with the first end of the transmission piece.
4. The camera module of claim 3,
the first rotary driving piece is provided with two output ends capable of synchronously rotating, and the two output ends can realize synchronous rotation; two lead screw transmission mechanisms are arranged in one-to-one correspondence with the transmission parts;
the two output ends of the first rotary driving piece are connected with the screw rods of the two screw rod transmission mechanisms in a one-to-one correspondence manner;
the two lead screw transmission mechanisms are respectively arranged on the opposite sides of the lens assembly so as to synchronously drive the lens assembly to move through the two transmission pieces arranged on the opposite sides of the lens assembly.
5. The camera module of claim 4,
the driving assembly further comprises a corner transmission mechanism;
the rotation axis of the first rotary driving piece is vertical to the rotation axis of a lead screw of the lead screw transmission mechanism; and the two output ends of the first rotary driving piece are respectively connected with the screw rods of the two screw rod transmission mechanisms through the corner transmission mechanism.
6. The camera module of claim 1,
further comprising: the device comprises a photosensitive assembly, a detection probe, a grating ruler and a control module;
the output end of the driving component is movably connected with the first end of the transmission piece so as to drive the first end of the transmission piece to reciprocate along a linear path;
the grating ruler is arranged on one side of the output end of the driving assembly and extends along the extension direction of the linear path; the detection probe is used for reading the position information of the output end of the driving component relative to the grating ruler;
the photosensitive assembly is arranged on the mounting seat, and the lens assembly and the photosensitive assembly are oppositely arranged along the direction of the optical axis;
the photosensitive assembly and the detection probe are respectively connected with the control module, and the control module is connected with the driving assembly.
7. The camera module of any of claims 1-6,
the lens assembly comprises a lens and a lens bracket;
a light-passing channel is formed in the lens bracket, and the lens is arranged at one end of the light-passing channel, which is far away from the mounting seat;
a first guide structure is arranged between the mounting seat and the lens bracket, and the lens assembly moves relative to the mounting seat along the optical axis direction through the first guide structure; the second end of the transmission piece is rotatably connected with the lens support.
8. The camera module of claim 7,
the lens holder includes a plurality of lens barrels; the plurality of lens barrels are sequentially sleeved from inside to outside, and two adjacent lens barrels in the plurality of lens barrels can relatively move along the direction of the optical axis so that the lens bracket can be switched between an extension state and a contraction state;
the lens is arranged on the innermost one of the lens barrels, and the second end of the transmission piece is rotatably connected with the innermost one of the lens barrels; the first guide structure is arranged between the mounting seat and one of the lens barrels which is located on the outermost side.
9. The camera module of claim 8,
a second guide structure is arranged between two adjacent lens cones in the plurality of lens cones; the second guiding structure is used for guiding two adjacent lens barrels to move relatively along the optical axis direction.
10. The camera module of claim 8,
a limiting structure is arranged between the adjacent lens cones;
the limiting structure comprises a first limiting part, a second limiting part and a third limiting part; the first limiting part is arranged at one adjacent lens cone among the plurality of lens cones, the second limiting part and the third limiting part are respectively arranged at two ends of the other adjacent lens cone among the plurality of lens cones along the optical axis direction, the second limiting part is close to the mounting seat, and the third limiting part is far away from the mounting seat;
the first limiting part is abutted with the third limiting part under the condition that the lens holder is in an extension state, and the first limiting part is abutted with the second limiting part under the condition that the lens holder is in a contraction state.
11. The camera module of claim 8,
an elastic connecting piece is arranged between the mounting seat and one of the lens cones which is positioned at the outermost side; the elastic connecting piece is in an initial state under the condition that the lens assembly is in a retracted state, and the elastic connecting piece is in a compressed state under the condition that the lens assembly is in an extended state;
wherein the amount of deformation of the resilient connecting element in the compressed state is greater than the amount of deformation of the resilient connecting element in the initial state.
12. An electronic device comprising a housing and the camera module of any one of claims 1-11, wherein the camera module is mounted to the housing.
CN202210389815.8A 2022-04-13 2022-04-13 Camera module and electronic equipment Pending CN114710612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210389815.8A CN114710612A (en) 2022-04-13 2022-04-13 Camera module and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210389815.8A CN114710612A (en) 2022-04-13 2022-04-13 Camera module and electronic equipment

Publications (1)

Publication Number Publication Date
CN114710612A true CN114710612A (en) 2022-07-05

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Family Applications (1)

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CN202210389815.8A Pending CN114710612A (en) 2022-04-13 2022-04-13 Camera module and electronic equipment

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Country Link
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008064800A (en) * 2006-09-04 2008-03-21 Ricoh Co Ltd Lens barrel, camera, and personal digital assistant
CN210867800U (en) * 2020-01-10 2020-06-26 东莞市中晶精密科技有限公司 Over-and-under type cell-phone camera support cap
CN113794823A (en) * 2021-09-14 2021-12-14 维沃移动通信（杭州）有限公司 Electronic equipment and display interface control method thereof
CN215494497U (en) * 2021-09-23 2022-01-11 昆山丘钛微电子科技股份有限公司 Camera telescoping device and camera module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008064800A (en) * 2006-09-04 2008-03-21 Ricoh Co Ltd Lens barrel, camera, and personal digital assistant
CN210867800U (en) * 2020-01-10 2020-06-26 东莞市中晶精密科技有限公司 Over-and-under type cell-phone camera support cap
CN113794823A (en) * 2021-09-14 2021-12-14 维沃移动通信（杭州）有限公司 Electronic equipment and display interface control method thereof
CN215494497U (en) * 2021-09-23 2022-01-11 昆山丘钛微电子科技股份有限公司 Camera telescoping device and camera module

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