CN113448056A - Camera module, camera device and electronic equipment - Google Patents
Camera module, camera device and electronic equipment Download PDFInfo
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- CN113448056A CN113448056A CN202110665760.4A CN202110665760A CN113448056A CN 113448056 A CN113448056 A CN 113448056A CN 202110665760 A CN202110665760 A CN 202110665760A CN 113448056 A CN113448056 A CN 113448056A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
- Lens Barrels (AREA)
Abstract
The invention discloses a camera module, a camera device and electronic equipment, wherein the camera module comprises a base, a lens, a lever and a driving piece, the base is provided with a first rotating part, the lens is movably arranged on the base, the lever is provided with a second rotating part, the second rotating part is rotatably connected to the first rotating part, one end of the lever is connected to the lens, the driving piece is arranged on the base, the driving piece is connected to the other end of the lever, and the driving piece is used for pushing the lever to rotate around the first rotating part so as to drive the lens to move relative to the base along the optical axis direction. According to the camera module, the camera device and the electronic equipment, the driving force for driving the lens to move is large, so that the lens is far away in moving distance, the stroke of the lens is increased, and the focusing requirement of the long-focus range of the lens can be met. And utilize mutually supporting of driving piece and lever to realize the module of making a video recording the effect of focusing, simple structure, convenient equipment still has better reliability simultaneously.
Description
Technical Field
The invention relates to the technical field of camera shooting, in particular to a camera shooting module, a camera shooting device and electronic equipment.
Background
Currently, most photographing devices (such as digital cameras, mobile phones, tablet computers, etc.) usually use a Voice Coil Motor (VCM) to drive a lens to move, so as to realize an auto-focus function of a camera module. The common voice coil motor mainly comprises a coil and a magnet, so that the thrust generated by electrifying the coil to the magnet pushes a lens to move, and automatic focusing is realized.
However, in the focusing process, the relative distance between the coil and the magnet is longer, which may cause the thrust generated by the coil when the coil is energized to the magnet to be smaller, so the voice coil motor in the related art is generally only suitable for being used as a short-distance driving device in a camera module, and has a short stroke, which is difficult to satisfy the long-focus focusing requirement of the long stroke.
Disclosure of Invention
The embodiment of the invention discloses a camera module, a camera device and electronic equipment, which can increase the stroke of a lens so as to meet the focusing requirement of a long-focus range of the lens.
In order to achieve the above object, in a first aspect, the present invention discloses a camera module, which includes a base, a lens, a lever and a driving element, wherein the base is provided with a first rotating portion, the lens is movably disposed on the base, a second rotating portion is disposed at a position of the lever corresponding to the first rotating portion, the second rotating portion is rotatably connected to the first rotating portion, one end of the lever is connected to the lens, the driving element is disposed on the base, the driving element is connected to the other end of the lever, and the driving element is configured to push the lever to rotate around the first rotating portion so as to drive the lens to move relative to the base along an optical axis direction.
In the module of making a video recording that this application embodiment provided, through setting up the lever with the driving piece, and utilize the lever is realized the camera lens with link to each other between the driving piece, thereby usable the deformation that produces when the driving piece circular telegram promotes the lever with first rotation portion rotates as the fulcrum, in order to drive the camera lens moves along the optical axis direction to realize the effect of focusing. In the scheme, in the focusing process, the driving piece is always connected with the lever, so that the lever can keep the acting force of the driving piece consistent, and the lever principle can be utilized to push the lens to move greatly, so that the distance of the lens to move is increased, and the focusing requirement of the long-focus range of the lens can be met.
Further, compared with a motor (for example, a coil and a magnet are matched) for driving the lens to move and focus, the lens focusing function is realized by matching the driving piece and the lever, the driving piece and the lever occupy a small space, the size of the camera module is remarkably reduced, and the miniaturization design is realized.
As an alternative implementation, in an embodiment of the first aspect of the present invention, in a direction perpendicular to the optical axis direction, a distance between a connection of the lever and the driver and the second rotating portion is L1, and a distance between a connection of the lever and the lens and the second rotating portion is L2, where L1 < L2. It is to be understood that, assuming that the amount of deformation of the driving member in the optical axis direction is S1 and the stroke of the lens in the optical axis direction is S2, S1/S2 is L1/L2. From the above relation, when S1 is kept unchanged, the stroke S2 of the lens can be increased by increasing L2 and/or decreasing L1 to achieve the telephoto focusing of the camera module, thereby satisfying the use requirements of the user. Therefore, by limiting L1 < L2, the stroke S2 of the lens can be increased as much as possible under the same amount of expansion and contraction or deformation of the actuator, and the long-stroke telephoto focusing requirement can be satisfied.
As an alternative implementation manner, in an embodiment of the first aspect of the present invention, one end of the lever is connected to a side of the lens away from the first rotating portion. Therefore, compared with the case that one end of the lever is connected to the side, far away from the first rotating part, of the lens, the longer distance is kept between the connecting part of the lever and the lens and the second rotating part, the whole structure of the camera module is more compact, and the camera module is in favor of being in accordance with the miniaturization design.
As an optional implementation manner, in an embodiment of the first aspect of the present invention, the base has an accommodating groove, the lens is slidably disposed in the accommodating groove, the driving element is disposed outside the accommodating groove, the other end of the lever extends to the outside of the accommodating groove and is connected to the driving element, and the first rotating portion is disposed on a side wall of the accommodating groove or in the accommodating groove. Because the driving piece is arranged outside the containing groove, the internal space of the containing groove is not occupied, so that a smaller containing groove is favorably used, a smaller base is favorably used, and the miniaturization design of the base is favorably realized.
As an alternative implementation manner, in an embodiment of the first aspect of the present invention, the base is further provided with a first guiding portion, and the lens is provided with a second guiding portion at a position corresponding to the first guiding portion, and the second guiding portion is slidably connected to the first guiding portion to guide the lens to move relative to the base along the optical axis direction. The lens can do linear motion along the optical axis direction by utilizing the matching effect of the first guide part and the second guide part, namely, the first guide part and the second guide part can play a role in guiding the movement of the lens, so that the condition that the lens deviates from a preset motion path and is difficult to receive an optical signal of a shot object is avoided, and the imaging quality of the lens is ensured.
As an optional implementation manner, in an embodiment of the first aspect of the present invention, the first guide portion is plural, the plural first guide portions are arranged at intervals, the plural second guide portions correspond to the plural first guide portions, and each of the plural second guide portions is slidably connected to the corresponding first guide portion. Through setting up a plurality ofly first guide part and a plurality ofly with it complex the second guide part, like this, the camera lens is a plurality of first guide part with the stable long distance of production removal is favorable to improving under the guide of second guide part the stability when the camera lens focuses and moves to be favorable to promoting the formation of image quality of camera lens.
As an optional implementation manner, in an embodiment of the first aspect of the present invention, the lens is further provided with a first connection portion, a second connection portion is provided at a position corresponding to the first connection portion at one end of the lever, one of the first connection portion and the second connection portion is a connection hole, the other of the first connection portion and the second connection portion is a connection column, and the connection hole is sleeved on the connection column. The mode that the hole columns are matched and connected is adopted, connection between one end of the lever and the lens is achieved, and the mode is simple.
As an alternative implementation, in the embodiment of the first aspect of the present invention, the connection hole is an elongated hole or an elliptical hole. This is advantageous for satisfying the need that the lens can make a linear motion along the optical axis direction.
As an optional implementation manner, in an embodiment of the first aspect of the present invention, the image capturing module further includes bearings, the bearings are disposed between the first rotating portion and the second rotating portion, and the bearings are respectively connected to the first rotating portion and the second rotating portion. The second rotation portion passes through the bearing with first rotation portion rotatable coupling is favorable to reducing first rotation portion with the frictional force between the second rotation portion, is convenient for the lever is round first rotation portion rotates.
As an alternative, in an embodiment of the first aspect of the present invention, the driving member is adhered to the base and the lever, respectively, or the driving member abuts against the lever. The connection mode of bonding or abutting is simple; and adopt the connected mode of bonding, compare in traditional mechanical fastening (modes such as riveting, welding, spiro union), the intensity of bonding is higher, the cost is lower, and after the installation the whole quality of module of making a video recording is lighter, is favorable to making the module of making a video recording accords with the lightweight design.
As an alternative implementation manner, in an embodiment of the first aspect of the present invention, the driving element is a piezoelectric element, and the driving element is a columnar structure or an elongated structure, and the driving element is configured to deform along an optical axis direction of the lens when being powered on, so as to push the lever to rotate around the first rotating portion, thereby driving the lens to move relative to the base along the optical axis direction. Therefore, in the process that the piezoelectric element pushes the lens, the lens can be accurately driven by controlling the voltage or current of the piezoelectric element, and the response speed is high. Moreover, the driving part adopts a columnar or strip-shaped piezoelectric element, so that the cross section of the piezoelectric element, which is cut by a plane perpendicular to the length direction of the piezoelectric element, is smaller, the piezoelectric element is easier to deform when being electrified, the generated deformation amount is larger, and the lever is more favorable to be pushed to rotate around the first rotating part so as to push the lens to move relative to the base along the optical axis direction.
As an alternative implementation, in an embodiment of the first aspect of the present invention, an end of one end of the lever is connected to the lens, and an end of the other end of the lever is connected to the driving member. Compare in the position of keeping away from its tip of one end of lever and be connected with the camera lens, the mode that the position of keeping away from its tip of the other end of lever is connected with the driving piece, the tip at the both ends of adoption lever is connected respectively in the mode of camera lens and driving piece, is favorable to shortening the whole length of lever, reduces the occupation space of lever to be favorable to reducing the volume of making a video recording the module, and then be favorable to making a video recording the module and accord with miniaturized design.
As an optional implementation manner, in an embodiment of the first aspect of the present invention, the number of the lenses is multiple, and the multiple lenses are arranged at intervals;
the number of the first rotating parts is correspondingly multiple, and the first rotating parts are arranged at intervals;
the number of the levers is correspondingly multiple, the second rotating parts of the levers are respectively rotatably connected to the corresponding first rotating parts, and one end of each lever is respectively connected to the corresponding lens;
the driving parts correspond to be a plurality of, and each the driving part is connected respectively in the other end of corresponding the lever, each the driving part is used for following when the circular telegram the optical axis direction takes place to deform to promote the correspondence the lever is round corresponding first rotation portion rotates, thereby drives the correspondence the camera lens follow the optical axis direction is relative the base removes. Therefore, the lens barrels can form relatively independent focusing movement, so that the lens barrels can be independently focused, the focusing of the lens barrels can not be interfered with one another, and the lens barrel focusing device is more convenient and fast.
In a second aspect, the present invention further discloses an image capturing apparatus, where the image capturing apparatus includes a photosensitive chip and the image capturing module according to the first aspect, and the photosensitive chip is disposed on the image side of the lens. The camera shooting device with the camera shooting module is beneficial to increasing the stroke of the lens, so that the focusing requirement of the long-focus range of the lens can be met; utilize mutually supporting of driving piece and lever to realize the focusing effect of the module of making a video recording, simple structure, convenient equipment still has better reliability simultaneously.
In a third aspect, the present invention further discloses an electronic apparatus, which includes a housing and the image pickup device according to the second aspect, wherein the image pickup device is disposed in the housing. The electronic equipment with the camera device is beneficial to increasing the stroke of the lens, so that the focusing requirement of the long-focus range of the lens can be met; utilize mutually supporting of driving piece and lever to realize the focusing effect of the module of making a video recording, simple structure, convenient equipment still has better reliability simultaneously.
Compared with the prior art, the invention has the beneficial effects that:
according to the camera module, the camera device and the electronic equipment provided by the embodiment of the invention, the lever and the driving piece are arranged, the connection between the lens and the driving piece is realized by using the lever, and the driving piece is used for pushing the lever to rotate by taking the first rotating part as a fulcrum so as to drive the lens to move along the optical axis direction, so that the focusing effect is realized. In this scheme, because the in-process of focusing, the driving piece links to each other with the lever all the time, and can utilize lever principle for the driving force that promotes the camera lens and remove is great, consequently, compare in the mode that utilizes the coil circular telegram to produce the thrust of magnet in order to promote the camera lens and remove, the distance that the camera lens of the module of making a video recording in this application removed is farther, promptly, adopts the technical scheme of this application, is favorable to increasing the stroke of camera lens, thereby can satisfy the long burnt scope focusing demand of camera lens.
In addition, this application utilizes mutually supporting of driving piece and lever to realize the focusing effect of the module of making a video recording, simple structure, convenient equipment still has better reliability simultaneously.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a camera module disclosed in the embodiment of the present invention;
fig. 2 is a schematic structural diagram of a camera module when a lens moves a certain distance along an optical axis relative to a base according to an embodiment of the present invention;
FIG. 3 is a top view of the camera module of FIG. 1;
FIG. 4 is an enlarged view of a portion of FIG. 3 at N;
FIG. 5 is a schematic structural diagram of a camera module without a lever according to an embodiment of the present invention;
FIG. 6 is an exploded view of the camera module of the present invention;
FIG. 7 is a schematic structural diagram of a lever according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a camera module with multiple lenses according to an embodiment of the disclosure;
fig. 9 is a schematic structural diagram of an image pickup apparatus disclosed in the embodiment of the present invention;
fig. 10 is a schematic structural diagram of an electronic device disclosed in the embodiment of the present invention.
Icon: 100. a camera module; 1. a base; 11. a first rotating section; 11a, a first sub-rotating part; 11b, a second sub-rotating part; 12. a containing groove; 13. a first guide portion; 13a, a first sub-guide; 13b, a second sub-guide; 2. a lens; 2a, a first sub-lens; 2b, a second sub-lens; 21. a second guide portion; 21a, a third sub-guide; 21b, a fourth sub-guide; 22. a first connection portion; 22a, a first sub-connection portion; 22b, a second sub-connection portion; 3. a lever; 3a, a first sub-lever; 3b, a second sub-lever; 31. a second rotating part; 31a, a third sub-rotating part; 31b, a fourth sub-rotating part; 32. a second connecting portion; 32a, a third sub-connection portion; 32b, a fourth sub-connection portion; 4. a drive member; 5. a bearing; 51. an outer ring; 52. an inner ring; 53. a ball bearing; 200. a camera device; 201. a photosensitive chip; 300. an electronic device; 301. a housing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
The technical solution of the present invention will be further described with reference to the following embodiments and the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention discloses a camera module, where the camera module 100 includes a base 1, a lens 2, a lever 3 and a driving member 4, the base 1 is provided with a first rotating portion 11, the lens 2 is movably disposed on the base 1, for example, the lens 2 is slidably disposed on the base 1, a second rotating portion 31 is disposed at a position of the lever 3 corresponding to the first rotating portion 11, the second rotating portion 31 is rotatably connected to the first rotating portion 11, and one end of the lever 3 is connected to the lens 2. The driving part 4 is arranged on the base 1, and the driving part 4 is connected to the other end of the lever 3, so that the driving part can be used for pushing the lever 3 to rotate around the first rotating part 11 (the second rotating part 31) to drive the lens 2 to move relative to the base 1 along the optical axis direction O, so as to realize the automatic focusing function of the camera module 100, and further ensure that the shooting effect of the camera module 100 is better.
In other words, as shown in fig. 1, for convenience of description, the optical axis direction O of the lens 2 may be defined to include a first direction and a second direction opposite to each other, wherein the first direction may be a direction indicated by an arrow x in fig. 1, and the second direction may be a direction indicated by an arrow y in fig. 1. Lens 2 can move along first direction or the relative base 1 of second direction under the effect of driving piece 4 and lever to realize the auto focus function of module 100 of making a video recording, and then make the shooting effect of module 100 of making a video recording better.
As an alternative, the drive element 4 can be a pneumatic cylinder or a hydraulic cylinder. In this embodiment, the driving member 4 may include a driving portion and a telescopic portion (for example, the driving portion may be a main body portion of an air cylinder or a hydraulic cylinder, and the telescopic portion may be a piston of the air cylinder or the hydraulic cylinder), the driving portion is disposed on the base 1, the telescopic portion is connected with the driving portion and can move relative to the driving portion along the first direction or the second direction, and the telescopic portion is further connected with the other end of the lever 3 to push the lever 3 to rotate around the first rotating portion 11 (the second rotating portion 31) to be driven. In other words, by driving the extension or retraction of the telescopic portion, the lever 3 is pushed to rotate about the first rotating portion 11 to realize the movement of the lens 2 in the first direction or the second direction.
As another alternative, as shown in fig. 1 and 2, the driving member 4 may be a piezoelectric element. In this embodiment, when a first voltage is applied to the driving member 4, the driving member 4 can be deformed along a first direction to push the lever 3 to rotate around the first rotating portion 11, so as to move the lens 2 along the second direction; when a second voltage is applied to the driving member 4, the driving member 4 can deform along a second direction to push the lever 3 to rotate around the first rotating portion 11, so as to drive the lens 2 to move along the first direction. Wherein one of the first voltage and the second voltage may be a positive voltage, and the other of the first voltage and the second voltage may be a negative voltage, that is, when the first voltage is a positive voltage, the second voltage is a negative voltage; and when the first voltage is a negative voltage, the second voltage is a positive voltage.
In the embodiment shown in fig. 1 and 2, assuming that fig. 1 shows a schematic structural diagram of the image pickup module 100 when the lens 2 is in an initial state, fig. 2 shows a schematic structural diagram of the image pickup module 100 when the lens 2 is in a focusing state, wherein the focusing state refers to a state in which the lens 2 moves a certain distance along a first direction or a second direction relative to the base 1. When a first voltage (e.g., a positive voltage) is applied to the driving member 4, the driving member 4 can deform along the first direction, so as to drive the lens 2 to move from the initial state (shown in fig. 1) to the focusing state (shown in fig. 2) along the second direction by rotating the push lever 3 around the first rotating portion 11, thereby implementing the auto-focusing function of the camera module 100.
It can be known from the foregoing, in the module 100 of making a video recording that provides in the embodiment of this application, through setting up lever 3 and driving piece 4, and utilize lever 3 realizes linking to each other between camera lens 2 and the driving piece 4 to the deformation that produces when the flexible or circular telegram of usable driving piece 4 promotes lever 3 and uses first rotating part 11 to rotate as the fulcrum, moves along optical axis direction O with drive camera lens 2, thereby realizes the effect of focusing. In this scheme, because Z is at the in-process of focusing, driving piece 4 links to each other with lever 3 all the time, is favorable to making lever 3 receive the effort of driving piece 4 and can keep unanimous, can utilize lever principle moreover for the driving force that promotes the removal of camera lens 2 is great, thereby is favorable to making the distance that camera lens 2 removed far away, increases camera lens 2's stroke, and then can satisfy camera lens 2's long burnt scope focusing demand.
Further, when the driving element 4 is a piezoelectric element, in the process that the driving element 4 pushes the lens 2, the lens 2 can be accurately driven by controlling the voltage or current of the driving element 4, and the response speed is high.
Further, owing to adopt the cooperation of coil and magnet to realize the function of focusing of camera lens, in order to ensure to have great impetus, generally need set up a plurality of coils and a plurality of magnet, the volume that occupies is great, therefore, compare in the relevant art and adopt coil and magnet as the actuating mechanism that focuses of module 100 of making a video recording, this application adopts the cooperation drive camera lens 2 of piezoelectric element and lever 3 to remove in order to realize focusing, the impetus is great, and the space that piezoelectric element and lever occupy is little, thereby can be when making the impetus that promotes the camera lens 2 to remove great, be favorable to reducing the volume of module 100 of making a video recording remarkably, realize miniaturized design. Moreover, the piezoelectric element and the lever 3 are used for replacing a coil and a magnet to be used as a focusing driving mechanism of the camera module 100, so that on one hand, the condition that the imaging quality of the camera module 100 cannot meet the requirements of consumers due to the interference of the imaging quality of the camera module 100 caused by the existence of a magnetic field can be avoided; on the other hand, the connection between piezoelectric element and lever 3 is mechanical connection, is favorable to realizing the accurate drive to camera lens 2, realizes accurate focusing, and the precision is higher.
In addition, the camera module 100 that this application embodiment provided, through utilizing mutually supporting of piezoelectric element and lever 3 to realize camera module 100's the effect of focusing, simple structure, convenient equipment still has better reliability simultaneously.
In the present invention, one of the first rotating portion 11 and the second rotating portion 31 may be a connecting shaft, and the other of the first rotating portion 11 and the second rotating portion 31 may be a shaft hole, that is, when the first rotating portion 11 is the connecting shaft, the second rotating portion 31 is the shaft hole; and when the first rotating part 11 is a shaft hole, the second rotating part 31 is a connecting column. It can be understood that, when the first rotating portion 11 is a connecting shaft, the first rotating portion 11 may be integrally formed on the base 1, or the first rotating portion 11 may be further fixedly connected to the base 1 by means of inserting, bonding, screwing, or the like, for example, when the first rotating portion 11 is inserted into the base 1, the base 1 may be provided with an inserting hole, and one end of the first rotating portion 11 may be inserted into the inserting hole.
It is understood that when the driving member 4 is a piezoelectric element, the material thereof may be quartz, piezoelectric ceramic, or polymer piezoelectric material. For example, the driving member 4 may be made of barium titanate piezoelectric ceramic (BaTiO3), lead zirconate titanate piezoelectric ceramic (PZT), Polyvinylidene fluoride piezoelectric material (PVDF), or the like. Since the piezoelectric ceramic has the advantages of acid and alkali resistance, high energy conversion efficiency, no electromagnetic interference, simple structure and the like, in the present invention, the driving member 4 can be preferably made of piezoelectric ceramic, that is, the driving member 4 can be a piezoelectric ceramic block or a piezoelectric ceramic column or the like.
It should be noted that, when the driving member 4 is a piezoelectric element, the deformation principle is as follows: due to the action of the electric field force in the direction of the electric field, the atomic cells of the driving member 4 are elongated or compressed, and when a large number of atomic cells are elongated or compressed microscopically and accumulate to a certain amount, they are expressed as a deformation of the driving member 4 macroscopically. Because the deformation of the driving member 4 is caused by the atomic cell deformation, the driving member 4 has a larger thrust compared with a driving mechanism such as a Voice Coil Motor (VCM), and the like, and has a faster response speed and a higher action precision, so that the lens 2 has a longer stroke and is suitable for being used as a long-distance driving mechanism in the camera module 100, thereby being beneficial to meeting the long-stroke long-focus requirement.
Illustratively, the driving member 4 may be a columnar or long-strip piezoelectric element, such as a columnar piezoelectric element, which is beneficial to make the cross section of the piezoelectric element, which is cut by a plane perpendicular to the length direction of the piezoelectric element, smaller, that is, the cross section of the piezoelectric element, which is cut by a plane perpendicular to the deformation direction of the piezoelectric element, so that the piezoelectric element is easier to deform when energized, and the amount of deformation generated is larger, thereby being beneficial to pushing the lever 3 to rotate around the first rotating part 11 to push the lens 2 to move along the optical axis direction O relative to the base 1.
In some embodiments, an end of one end of the lever 3 may be connected to the lens 2, and an end of the other end of the lever may be connected to the driving member 4. Compare in the position of keeping away from its tip of one end of lever 3 and be connected with camera lens 2, the mode that the position of keeping away from its tip of the other end of lever 3 is connected with driving piece 4 adopts the tip at the both ends of lever 3 to connect respectively in camera lens 2 and driving piece 4, is favorable to shortening the whole length of lever 3, reduces the occupation space of lever 3 to be favorable to reducing the volume of making a video recording module 100, and then be favorable to making a video recording module 100 accord with miniaturized design.
In some embodiments, the driving member 4 may be bonded to the base 1 and/or the lever 3, that is, one end of the driving member 4 may be bonded to the base 1 while the other end of the driving member is screwed to the other end of the lever 3, or one end of the driving member 4 may be bonded to the other end of the lever 3 while the other end of the driving member 4 is screwed to the base 1, or both ends of the driving member 4 may be bonded to both the base 1 and the other end of the lever 3. In the present invention, it is preferable that both ends of the driving member 4 are respectively bonded and fixed to the other ends of the base 1 and the lever 3, for example, both ends of the driving member 4 can be bonded and fixed to the other ends of the base 1 and the lever 3 by using an adhesive (e.g., thermosetting adhesive) or a back adhesive. Adopt the bonding mode to realize driving piece 4 respectively with base 1 and lever 3 between be connected, the connected mode is simpler, compares in traditional mechanical fastening (modes such as riveting, welding, spiro union) moreover, and the intensity of bonding is higher, the cost is lower, and the whole quality of the module of making a video recording 100 after the installation is lighter, is favorable to making the module of making a video recording 100 accord with the lightweight design.
It will be appreciated that, in addition to the driving member 4 being fixedly connected to one end of the lever 3 by bonding or screwing, in other embodiments, the driving member 4 may abut against one end of the lever 3, and such connection is simpler and more convenient.
In some embodiments, assuming that the amount of deformation or expansion and contraction of the driver 4 in the optical axis direction O is S1, the stroke of the lens 2 in the optical axis direction is S2. As shown in fig. 3, in a direction perpendicular to the optical axis direction (e.g., a direction indicated by an arrow z in fig. 3), a distance between a connection point a of the lever 3 and the driving member 4 and the second rotating portion 31 is L1, and a distance between a connection point B of the lever 3 and the lens 2 and the second rotating portion 31 is L2, where S1/S2 is L1/L2, that is, S2 is S1 is L2/L1. From the above relation, when S1 is kept unchanged, the stroke S2 of the lens 2 can be increased by increasing L2 and/or decreasing L1 to achieve the telephoto focusing of the camera module 100, so as to meet the use requirements of the user.
As can be seen from the above description, in the image pickup module 100 provided in the present application, when S1 is maintained, the distance L1 between the connection point a of the lever 3 and the driver 4 and the second rotating portion 31 may be decreased, or the distance L2 between the connection point B of the lever 3 and the lens 2 and the second rotating portion 31 may be increased, so as to increase the stroke S2 of the lens 2 as much as possible, in order to increase the stroke S2 of the lens 2 under the same deformation or expansion and contraction amount generated by the driver 4, the distance between the connection point a of the lever 3 and the driver 4 and the second rotating portion 31 may be controlled to be smaller than the distance between the connection point B of the lever 3 and the lens 2 and the second rotating portion 31, that is, L1 < L2, which is beneficial to increase the formation S2 of the lens 2, and is beneficial to meet the long-stroke long-focus requirement.
Optionally, one end of the lever 3 is connected to a side of the lens 2 away from the first rotating portion 11, so that compared with the case where one end of the lever 3 is connected to a side of the lens 2 away from the first rotating portion 11, it is beneficial to have a longer distance between the connection point B of the lever 3 and the lens 2 and the second rotating portion 31, and at the same time, the overall structure of the camera module 100 is more compact, which is beneficial to make the camera module 100 conform to a miniaturized design.
In some embodiments, as shown in fig. 3 and 4, the camera module 100 further includes a bearing 5, the bearing 5 is disposed between the first rotating portion 11 and the second rotating portion 31, and the bearing 5 is connected to the first rotating portion 11 and the second rotating portion 31 respectively. The second rotating portion 31 is rotatably connected to the first rotating portion 11 via the bearing 5. By providing the bearing 5 between the first rotating portion 11 and the second rotating portion 31, it is advantageous to reduce the friction force between the first rotating portion 11 and the second rotating portion 31, and the lever 3 is convenient to rotate around the first rotating portion 11, so that the rotation of the lever 3 is smoother.
In the embodiment shown in fig. 4, the first rotating part 11 is a connecting column, the second rotating part 31 is a connecting hole, the bearing 5 may include an outer ring 51, an inner ring 52 and balls 53, the outer ring 51 is installed in the second rotating part 31 of the lever 3 and is kept relatively stationary with the second rotating part 31, the inner ring 52 is sleeved on the first rotating part 11 of the base 1 and is kept relatively stationary with the first rotating part 11, and the balls 53 are distributed between the inner ring 52 and the outer ring 51. When the driving member 4 pushes the lever 3 to rotate around the first rotating portion 11, the outer ring 51 rotates with the second rotating portion 31 relative to the inner ring 52, and simultaneously the balls 53 are driven to rotate for lubrication, thereby reducing the friction between the first rotating portion 11 and the second rotating portion 31.
In some embodiments, as shown in fig. 5, the base 1 may have a receiving groove 12, the lens 2 may be slidably disposed in the receiving groove 12, and the driving element 4 may be disposed outside the receiving groove 12 or disposed in the receiving groove 12, and similarly, the other end of the lever 3 may also be located outside the receiving groove 12 or disposed in the receiving groove 12, that is, the connection point between the lever 3 and the driving element 4 may be located outside the receiving groove 12 or disposed in the receiving groove 12.
As an alternative embodiment, as shown in fig. 5 (a), the driving element 4 may be disposed in the receiving groove 12 of the base 1, the other end of the lever 3 may be disposed in the receiving groove 12, the connection point between the lever 3 and the driving element 4 may be disposed in the receiving groove 12, and the first rotating portion 11 needs to be disposed in the receiving groove 12. In this scheme, driving piece 4 and first rotation portion 11 all need occupy the inner space of storage tank 12 for base 1 need set up the great storage tank 12 of inner space and just can hold camera lens 2, driving piece 4 and first rotation portion 11 simultaneously, can make base 1's volume great like this, is unfavorable for the miniaturized design of base 1, thereby is unfavorable for the miniaturized design of camera module 100.
As another alternative, as shown in fig. 5 (b) and (c), the driving element 4 is disposed outside the receiving groove 12 of the base 1, and the other end of the lever 3 can be disposed outside the receiving groove 12, so that the connection point between the lever 3 and the driving element 4 can be disposed outside the receiving groove 12, and the first rotating portion 11 can be disposed on the sidewall of the receiving groove 12, or the first rotating portion 11 can be disposed in the receiving groove 12. Because the driving piece 4 is arranged outside the containing groove 12, the internal space of the containing groove 12 is not occupied, so that the use of a smaller containing groove 12 is facilitated, the use of a smaller base 1 is facilitated, and the miniaturization design of the base 1 is facilitated.
In this embodiment, it is preferable that the first rotating portion 11 is disposed on a side wall of the receiving groove 12, as shown in (c) of fig. 5, and thus, the first rotating portion 11 does not occupy an inner space of the receiving groove 12, which is more advantageous for using a smaller receiving groove 12, and thus, a smaller base 1, and further, for a miniaturized design of the base 1. Moreover, the first rotating portion 11 is supported by the side wall of the accommodating groove 12, and a support member is not required to be additionally arranged in the accommodating groove 12 to support the first rotating portion 11, which is beneficial to making the structure of the camera module 100 simpler.
In some embodiments, as shown in fig. 6, the base 1 is further provided with a first guiding portion 13, specifically, the first guiding portion 13 may be disposed in the accommodating groove 12, a second guiding portion 21 is disposed at a position of the lens 2 corresponding to the first guiding portion 13, and the second guiding portion 21 may be slidably connected to the first guiding portion 13 to guide the lens 2 to move relative to the base 1 along the optical axis direction. When the driving member 4 pushes the lever 3 to move, the other end of the lever 3 makes an arc motion around the first rotating portion 11, and the motion trajectory is an arc, so that the lens 2 is driven by the lever 3 to move, the lens 2 also makes an arc motion around the first rotating portion 11, and the motion trajectory is an arc, so that the optical axis of the lens 2 and the axis of the light-passing hole may not be on the same axis, which makes the lens 2 difficult to receive the optical signal of the object to be shot, and affects the imaging quality, therefore, the lens 2 can make a linear motion along the optical axis direction by using the cooperation of the first guiding portion 13 and the second guiding portion 21, that is, the first guiding portion 13 and the second guiding portion 21 can guide the movement of the lens 2, so that the lens 2 can move along the direction in which the first guiding portion and the second guiding portion extend, and the situation that the lens 2 deviates from a preset motion path and is difficult to receive the optical signal of the object to be shot is avoided Thereby ensuring the imaging quality of the lens 2.
Wherein, one of the first guide part 13 and the second guide part 21 is a slide rail, and the other of the first guide part 13 and the second guide part 21 is a slide hole (i.e. a slide slot), that is, when the first guide part 13 is a slide rail, the second guide part 21 is a slide hole; when the first guide portion 13 is a slide groove, the second guide portion 21 is a slide rail.
For example, the first guide portion 13 may be a plurality of first guide portions 13, and a plurality of first guide portions 13 are disposed at intervals, so that the second guide portions 21 may correspond to a plurality of second guide portions 21, and each of the second guide portions 21 may be slidably connected to the corresponding first guide portion 13. Through setting up a plurality of first guide parts 13 and a plurality of second guide parts 21 of complex with it, like this, lens 2 produces stable long distance movement under the guide of a plurality of first guide parts 13 and second guide part 21, is favorable to improving the stability when lens 2 focuses and moves to be favorable to promoting the imaging quality of lens 2.
In the embodiment shown in fig. 6, there are two first guide portions 13, two first guide portions 13 are divided into a first sub-guide portion 13a and a second sub-guide portion 13b, correspondingly, there are two second guide portions 21, and two second guide portions 21 are divided into a third sub-guide portion 21a and a fourth sub-guide portion 21b, where the third sub-guide portion 21a is slidably connected to the first sub-guide portion 13a, and the fourth sub-guide portion 21b is slidably connected to the second sub-guide portion 13b, which is beneficial to improving the stability of the lens 2 during focusing movement, and thus beneficial to improving the imaging quality of the lens 2.
In some embodiments, as shown in fig. 6 and 7, in order to facilitate connection between one end of the lever 3 and the lens 2, the lens 2 is further provided with a first connection portion 22, a second connection portion 32 is provided at a position, corresponding to the first connection portion 22, of one end of the lever 3, one of the first connection portion 22 and the second connection portion 32 may be a connection hole, and the other of the first connection portion 22 and the second connection portion 32 may be a connection column, and the connection hole is sleeved on the connection column. The mode that the hole post matches and connects is adopted, realizes being connected between one end of lever 3 and camera lens 2, and the mode is fairly simple. It can be understood that the other end of the lever 3 can be connected to the lens 2 in the above manner, and can also abut against the lens 2, and the abutting manner is also relatively simple and convenient.
In the embodiment shown in fig. 6 and 7, the first connection portion 22 is a connection post and the second connection portion 32 is a connection hole. It can be known from the above-mentioned, when utilizing the flexible of driving piece 4 or the deformation that produces when circular telegram to promote lever 3 to move, lever 3's the other end is arc motion round first rotation portion 11, and linear motion is made along the optical axis direction to camera lens 2, consequently, in order to satisfy camera lens 2 can be along the needs that linear motion is made to the optical axis direction, the connecting hole can be rectangular shape hole or oval hole etc..
In some embodiments, as shown in fig. 8, the lens 2 may be multiple, and multiple lenses 2 are arranged at intervals; the number of the first rotating parts 11 is correspondingly multiple, and the multiple first rotating parts 11 are arranged at intervals; the number of the levers 3 is also plural, the second rotating portion 31 of each lever 3 is rotatably connected to the corresponding first rotating portion 11, and one end of each lever 3 is connected to the corresponding lens 2. The driving parts 4 are correspondingly multiple, each driving part 4 is respectively connected to the other end of the corresponding lever 3, and each driving part 4 is used for pushing the corresponding lever 3 to rotate around the corresponding first rotating part 11, so as to drive the corresponding lens 2 to move relative to the base 1 along the optical axis direction. Therefore, each lens 2 can form relatively independent focusing movement, so that each lens 2 can be independently focused, and the focusing of each lens 2 can not interfere with each other, so that the focusing is more convenient.
It can be known that, by using the driving member 4 (e.g. piezoelectric element) and the lever 3 as the focusing driving mechanism of the camera module 100, when there are a plurality of focusing driving mechanisms in the camera module 100, there is no magnetic field interference between the plurality of focusing driving mechanisms, so that the situation that the imaging quality of the camera module 100 is interfered by the presence of the magnetic field can be avoided.
In the embodiment shown in fig. 8, the number of the lenses 2 is two, the two lenses 2 are divided into a first sub-lens 2a and a second sub-lens 2b, the first connecting portion 22 provided on the first lens 2a is a first sub-connecting portion 22a, the first connecting portion 22 provided on the second lens 2b is a second sub-connecting portion 22b, correspondingly, the base 1 is provided with two first rotating portions 11, the two first rotating portions 11 are divided into a first sub-rotating portion 11a and a second sub-rotating portion 11b, the two levers 3 are two, the two levers 3 are a first sub-lever 3a and a second sub-lever 3b, the second rotating portion 31 provided on the first sub-lever 3a is a third sub-rotating portion 31a, the second connecting portion 32 provided on the first sub-lever 3a is a third sub-connecting portion 32a, and the second rotating portion 31 provided on the second sub-lever 3b is a fourth sub-rotating portion 31b, the second connecting portion 32 disposed on the second sub-lever 3b is a fourth sub-connecting portion 32b, the number of the driving members 4 is two, and the two driving members 4 are divided into a first sub-driving member 4a and a second sub-driving member 4 b. Specifically, the method comprises the following steps:
the third sub-rotating portion 31a of the first sub-lever 3a is rotatably connected to the first sub-rotating portion 11a of the base 1, the third sub-connecting portion 32a of the first sub-lever 3a is connected to the first sub-connecting portion 22a of the first sub-lens 2a, and the first sub-driving member 4a is connected to the other end of the first sub-lever 3a, so that the first sub-driving member 4a can perform a telescopic motion or deform along the optical axis direction when being powered on, so as to push the first sub-lever 3a to rotate around the first sub-rotating portion 11a, thereby driving the first sub-lens 2a to move relative to the base 1 along the optical axis direction.
The fourth sub-rotating portion 31b of the second sub-lever 3b is rotatably connected to the second sub-rotating portion 11b of the base 1, the fourth sub-connecting portion 32b of the second sub-lever 3b is connected to the second sub-connecting portion 22b of the second sub-lens 2b, and the second sub-driving member 4b is connected to the other end of the second sub-lever 3b, so that the second sub-driving member 4b can perform a telescopic motion or deform along the optical axis direction when being powered on, so as to push the second sub-lever 3b to rotate around the second sub-rotating portion 11b, thereby driving the second sub-lens 2b to move relative to the base 1 along the optical axis direction.
Referring to fig. 9, the present application further discloses an image capturing apparatus, where the image capturing apparatus 200 includes a photosensitive chip 201 and the image capturing module 100 according to the above embodiment, and the photosensitive chip 201 is disposed on the image side of the lens 2 of the image capturing module 100. The lens 2 of the image capturing module 100 can be used for receiving an optical signal of a subject and projecting the optical signal to the photosensitive chip 201, and the photosensitive chip 201 can be used for converting the optical signal corresponding to the subject into an image signal. And will not be described in detail herein. It can be understood that the image capturing apparatus 200 having the image capturing module 100 also has all the technical effects of the image capturing module 100. Namely, the stroke of the lens 2 is increased, so that the focusing requirement of the long-focus range of the lens 2 can be met; moreover, when the driving member is a piezoelectric element, the lens 2 can be accurately driven by controlling the voltage or current of the driving member 4, and the response speed is high. Since the above technical effects have been described in detail in the embodiment of the camera module 100, they are not described herein again.
Referring to fig. 10, the present application further discloses an electronic apparatus, where the electronic apparatus 300 includes a housing 301 and the image capturing device 200 according to the above embodiment, and the image capturing device 200 is disposed on the housing 301 to obtain image information. The electronic device 300 may be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a smart watch, a monitor, and the like. It can be understood that, since the image capturing apparatus 200 has all the technical effects of the image capturing module 100, the electronic device 300 having the image capturing apparatus 200 also has all the technical effects of the image capturing module 100. Namely, the stroke of the lens 2 is increased, so that the focusing requirement of the telephoto range of the lens 2 is met, and the use requirement of a user can be met; moreover, when the driving member is a piezoelectric element, the lens 2 can be accurately driven by controlling the voltage or current of the driving member 4, and the response speed is high. Since the above technical effects have been described in detail in the embodiment of the camera module 100, they are not described herein again.
The above detailed descriptions of the camera module, the camera device and the electronic device disclosed in the embodiments of the present invention apply specific examples to explain the principle and the embodiments of the present invention, and the descriptions of the above embodiments are only used to help understand the camera module, the camera device and the electronic device and the core ideas thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (15)
1. The utility model provides a module of making a video recording which characterized in that includes:
the base is provided with a first rotating part;
the lens is movably arranged on the base;
the position of the lever, which corresponds to the first rotating part, is provided with a second rotating part, the second rotating part is rotatably connected to the first rotating part, and one end of the lever is connected to the lens; and
the driving piece is arranged on the base, the driving piece is connected to the other end of the lever, and the driving piece is used for pushing the lever to rotate around the first rotating portion so as to drive the lens to move relative to the base along the direction of the optical axis.
2. The camera module according to claim 1, wherein a distance between a connection of the lever and the driver and the second rotating section in a direction perpendicular to the optical axis direction is L1, and a distance between a connection of the lever and the lens and the second rotating section is L2, wherein L1 < L2.
3. The camera module of claim 2, wherein one end of the lever is connected to a side of the lens away from the first rotating portion.
4. The camera module of claim 1, wherein the base has an accommodating groove, the lens is slidably disposed in the accommodating groove, the driving member is disposed outside the accommodating groove, the other end of the lever is disposed outside the accommodating groove and connected to the driving member, and the first rotating portion is disposed on a sidewall of the accommodating groove or in the accommodating groove.
5. The camera module of claim 1, wherein the base further has a first guide portion, and the lens has a second guide portion corresponding to the first guide portion, the second guide portion being slidably connected to the first guide portion to guide the lens to move relative to the base along the optical axis.
6. The camera module according to claim 5, wherein the first guide portion is provided in plurality, the first guide portions are provided in plurality at intervals, the second guide portions are provided in plurality, and each of the second guide portions is slidably connected to the corresponding first guide portion.
7. The camera module according to claim 1, wherein the lens further comprises a first connecting portion, a second connecting portion is disposed at a position of one end of the lever corresponding to the first connecting portion, one of the first connecting portion and the second connecting portion is a connecting hole, the other of the first connecting portion and the second connecting portion is a connecting column, and the connecting hole is sleeved on the connecting column.
8. The camera module of claim 7, wherein the connection hole is an elongated hole or an elliptical hole.
9. The camera module of any of claims 1-8, further comprising a bearing disposed between the first rotating portion and the second rotating portion, wherein the bearing is coupled to the first rotating portion and the second rotating portion, respectively.
10. The camera module of any of claims 1-8, wherein the actuator is bonded to the base and the lever, respectively, or wherein the actuator abuts the lever.
11. The camera module according to any one of claims 1-8, wherein the driving member is a piezoelectric element, and the driving member is a columnar structure or an elongated structure, and the driving member is configured to deform along an optical axis direction of the lens when being powered on, so as to push the lever to rotate around the first rotating portion, thereby moving the lens relative to the base along the optical axis direction.
12. The camera module of any of claims 1-8, wherein an end of one end of the lever is connected to the lens and an end of the other end of the lever is connected to the actuator.
13. The camera module according to any one of claims 1-8, wherein the number of the lenses is plural, and the plural lenses are arranged at intervals;
the number of the first rotating parts is correspondingly multiple, and the first rotating parts are arranged at intervals;
the number of the levers is correspondingly multiple, the second rotating parts of the levers are respectively rotatably connected to the corresponding first rotating parts, and one end of each lever is respectively connected to the corresponding lens;
the driving parts are correspondingly multiple and respectively connected to the other ends of the corresponding levers, and each driving part is used for pushing the corresponding lever to rotate around the corresponding first rotating part so as to drive the corresponding lens to move relative to the base along the optical axis direction.
14. An image pickup apparatus, comprising a photosensitive chip and the image pickup module according to any one of claims 1 to 13, wherein the photosensitive chip is disposed on an image side of the lens.
15. An electronic apparatus, characterized in that the electronic apparatus comprises a housing and the image pickup device according to claim 14, the image pickup device being provided to the housing.
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| CN202110665760.4A CN113448056A (en) | 2021-06-16 | 2021-06-16 | Camera module, camera device and electronic equipment |
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| CN202110665760.4A CN113448056A (en) | 2021-06-16 | 2021-06-16 | Camera module, camera device and electronic equipment |
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| CN113448056A true CN113448056A (en) | 2021-09-28 |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210928 |
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| RJ01 | Rejection of invention patent application after publication |