CN111343372A - Camera module and electronic equipment - Google Patents
Camera module and electronic equipment Download PDFInfo
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- CN111343372A CN111343372A CN202010210680.5A CN202010210680A CN111343372A CN 111343372 A CN111343372 A CN 111343372A CN 202010210680 A CN202010210680 A CN 202010210680A CN 111343372 A CN111343372 A CN 111343372A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- 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
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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
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a camera module and electronic equipment, wherein the camera module comprises a photosensitive chip, a lens (400) and a driving motor, wherein: the lens (400) with the sensitization chip sets up relatively, driving motor includes piezoelectricity deformation portion (100), piezoelectricity deformation portion (100) includes two at least piezoelectricity deformation sub-parts (110), two at least piezoelectricity deformation sub-parts (110) superpose one by one, and two at least piezoelectricity deformation sub-parts (110) can warp along the direction of superpose under the circumstances of circular telegram to the drive lens (400) move towards first direction or second direction, wherein, first direction is for being close to the direction of sensitization chip, the second direction is for keeping away from the direction of sensitization chip. The scheme can solve the problems of complex VCM structure, small driving force and magnetic field interference.
Description
Technical Field
The invention relates to the technical field of camera devices, in particular to a camera module and electronic equipment.
Background
With the rapid development of electronic devices, the electronic devices are more and more widely used, and the electronic devices such as mobile phones and tablet computers play more and more roles in the work, life, entertainment and the like of people. Taking a mobile phone as an example, the mobile phone industry has been developed rapidly in recent years, and with the development of the mobile phone, the requirement of the consumer on the photographing performance of the mobile phone is higher and higher, and even the photographing effect of a single lens reflex camera is required to be comparable to that of the single lens reflex camera. Obviously, high pixel, large aperture, fast focusing, optical anti-shake, etc. will become the mainstream development trend of mobile phones.
As is known, a camera of a mobile phone generally focuses on a focusing motor, and as a consumer has higher and higher requirements on the photographing performance of the mobile phone, the consumer has higher and higher requirements on the performance of the focusing motor. Currently, the focus Motor is mainly VCM (Voice Coil Motor), but the VCM has a complex structure, a manufacturing process is long, and a driving force of the VCM is small, so that a high-performance and heavy camera cannot be driven to focus. Meanwhile, the VCM can generate a strong magnetic field in the working process, the imaging quality of the camera can be interfered by the strong magnetic field, the requirement of consumers can not be met by the imaging quality, and when a plurality of VCMs exist in the camera, magnetic field interference exists among the VCMs, the focusing effect of the camera is poor, and the imaging quality of the camera is poor.
Disclosure of Invention
The invention discloses a camera module and electronic equipment, which can solve the problems of complex VCM structure, small driving force and magnetic field interference.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention discloses a camera module, which includes a photosensitive chip, a lens, and a driving motor, wherein:
the lens with the sensitization chip sets up relatively, driving motor includes piezoelectricity deformation portion, piezoelectricity deformation portion includes two at least piezoelectricity deformation sub-parts, two at least piezoelectricity deformation sub-parts superpose one by one, just two at least piezoelectricity deformation sub-parts can warp along the direction of superpose under the circumstances of circular telegram, in order to drive the lens moves towards first direction or second direction, wherein, first direction is for being close to the direction of sensitization chip, the second direction is for keeping away from the direction of sensitization chip.
In a second aspect, an embodiment of the present invention discloses an electronic device, including the above camera module.
In the camera module disclosed by the embodiment of the invention, the lens is in driving connection with the piezoelectric deformation part so as to drive the lens to move in the direction close to or far from the photosensitive chip, thereby realizing the focusing effect. In the scheme, the piezoelectric deformation part comprises a plurality of piezoelectric deformation sub-parts, the deformation of each piezoelectric deformation sub-part is accumulated to realize the driving of the lens, and the driving force is large, so that the driving mechanism can drive a high-performance and heavy camera to focus. Meanwhile, the driving mechanism is simple in structure, so that the manufacturing process of the driving mechanism is simple, the manufacturing process of the driving mechanism is short, the driving mechanism with the structure cannot or is difficult to generate a magnetic field, the problem that the imaging quality of the camera module is interfered due to the existence of the magnetic field, the imaging quality cannot meet the requirements of consumers is avoided, and when a plurality of driving mechanisms exist in the camera module, the magnetic field interference cannot exist among the plurality of driving mechanisms. In the process of driving the lens by the driving mechanism, the lens can be accurately driven by controlling the voltage or current of the piezoelectric deformation part, and the response speed is high.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings used in the description of the embodiments or the background art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without any inventive exercise.
Fig. 1 is a schematic view of a camera module according to an embodiment of the present invention;
fig. 2 is a schematic partial structure diagram of a camera module disclosed in the embodiment of the present invention;
FIG. 3 is a schematic view of a piezoelectric deformation portion disclosed in an embodiment of the present invention;
fig. 4 is a cross-sectional view of fig. 3.
Description of reference numerals:
100-piezoelectric deformation, 110-piezoelectric deformation, 120-first electrical connection, 130-support piece;
200-a control module;
300-a deformable housing;
400-a lens;
500-lens holder, 510-cylindrical body, 520-connecting flange.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all 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.
The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 4, an embodiment of the invention discloses a camera module, which includes a photosensitive chip, a lens 400 and a driving motor.
Wherein, lens 400 mainly plays transmission, refraction light's effect, and on external light transmitted the sensitization chip after lens 400, the light signal was received to the sensitization chip to convert light signal into the signal of telecommunication and in order to reach the purpose of formation of image. The structures and principles of the lens 400 and the photo sensor chip are known in the art, and are not described herein for brevity. In the embodiment of the present invention, the lens 400 is disposed opposite to the photo chip, and the photo chip performs photo imaging through the lens 400.
The driving motor includes a piezoelectric deformation portion 100, the piezoelectric deformation portion 100 includes at least two piezoelectric deformation sub-portions 110, the at least two piezoelectric deformation sub-portions 110 are stacked one on another, and the at least two piezoelectric deformation sub-portions 110 are deformable in a stacking direction with power applied. The materials of the piezoelectric deformer portion 110 can be classified into three broad categories by crystallographic means, the first category being single crystal structures, such as quartz; the second type is a polycrystalline structure, for example, ceramics such as piezoelectric ceramics BaTiO3, PZT (lead zirconate titanate piezoelectric ceramics); the third type is a high molecular piezoelectric material, such as PVDF (vinylidene fluoride homopolymer). Since the piezoelectric ceramic has the advantages of acid and alkali resistance, high energy conversion efficiency, no electromagnetic interference, simple structure, etc., in the present invention, the piezoelectric deformation sub-portion 110 may preferably be made of piezoelectric ceramic, and the piezoelectric deformation sub-portion 110 may be a piezoelectric ceramic sheet.
Specifically, the relationship between the amount of deformation of the piezoelectric deformation portion 100 and the change in the electric field is as follows:
ε＝nd33U＝nd33(I/C)
where ε is the amount of deformation of the piezoelectric deformation portion 100, n is the number of layers of the piezoelectric deformation portion 100, i.e., the number of piezoelectric deformation subsections 110, d in this context33U is the voltage applied across the piezoelectric transformer 110, I is the current passing through the piezoelectric transformer 110, and C is the capacitance of the piezoelectric transformer 110, which is the piezoelectric strain coefficient of the piezoelectric transformer 110, i.e., the ratio of the strain of the piezoelectric transformer 110 in the polarization direction to the electric field strength applied in the polarization direction. By adjusting the voltage, the number of layers, or the piezoelectric strain coefficient across the piezoelectric deformation sub-portion 110 (or by the current, the number of layers, the capacitance, or the piezoelectric strain coefficient across the piezoelectric deformation sub-portion 110), the piezoelectric deformation portion 100 can obtain the deformation amount required for focusing the lens 400, i.e., the stroke of the driving motor.
The principle of deformation of the piezoelectric deformation portion 100 is as follows: when the atomic cells of the piezoelectric deformation portion 100 are elongated by the action of the electric field force in the direction of the electric field, a large number of atomic cells are microscopically elongated and accumulated to a certain amount, which represents deformation of the piezoelectric deformation portion 100 macroscopically. Just because the deformation of the piezoelectric deformation part 100 is caused by the atomic cell deformation, the piezoelectric deformation part 100 has a larger thrust compared with driving devices such as VCM, etc., and has a faster response speed and a higher action precision, which can completely match the focusing and anti-shake requirements of a heavier high-performance lens. The deformation mechanism of the piezoelectric deformation portion 100 is well known in the art, and is not described herein for brevity.
From the above formula, it is a simpler way to increase the number of the electrical deformation subsections 110 to reach the deformation amount required by the piezoelectric deformation section 100 to drive the lens 400 to focus, because in the camera module, the magnitude of the voltage or current provided by the camera module to the piezoelectric deformation section 100 is limited, and therefore, the plurality of the piezoelectric deformation subsections 110 can make the stroke of the driving motor larger, so that the driving motor can drive the lens 400 to focus in a wider range.
When the at least two piezoelectric deformation sub-portions 110 are energized, the piezoelectric deformation portion 100 can deform along the stacking direction to drive the mirror 400 to move toward a first direction or a second direction, wherein the first direction is a direction close to the photosensitive chip, and the second direction is a direction away from the photosensitive chip. That is to say, the lens 400 can move in a direction close to the photo sensor chip or away from the photo sensor chip along with the deformation of the at least two piezoelectric deformation sub-portions 110, so as to achieve the focusing effect, and further make the shooting effect of the camera module better.
In the camera module disclosed in the embodiment of the present invention, the lens 400 is drivingly connected to the piezoelectric deformation portion 100 to drive the lens 400 to move in a direction close to or away from the photosensitive chip, thereby achieving a focusing effect. In this embodiment, the piezoelectric deformation portion 100 includes a plurality of piezoelectric deformation sub-portions 110, and the deformation of each piezoelectric deformation sub-portion 110 is accumulated to drive the lens 400, and the driving force is large, so that the driving mechanism can drive a high-performance and heavy camera to focus. Meanwhile, the driving mechanism is simple in structure, so that the manufacturing process of the driving mechanism is simple, the manufacturing process of the driving mechanism is short, the driving mechanism with the structure cannot or is difficult to generate a magnetic field, the problem that the imaging quality of the camera module is interfered due to the existence of the magnetic field, the imaging quality cannot meet the requirements of consumers is avoided, and when a plurality of driving mechanisms exist in the camera module, the magnetic field interference cannot exist among the plurality of driving mechanisms. In the process of driving the lens 400 by the driving mechanism, the lens 400 can be accurately driven by controlling the voltage or current of the piezoelectric deformation part 100, the response speed is high, and the problems of complex VCM structure, small driving force and magnetic field interference are finally solved.
As can be seen from the above principle of deformation of the piezoelectric deformation portion 100, the control of the deformation amount of the piezoelectric deformation portion 100 can be achieved by adjusting the voltage across the piezoelectric deformation sub-portion 110. Optionally, when the first voltage is applied to the at least two piezoelectric deformation subsections 110, the at least two piezoelectric deformation subsections 110 may drive the mirror 400 to move towards the first direction, so that the mirror 400 approaches the photosensitive chip; when the second voltage is applied to the at least two piezoelectric deformation subsections 110, the at least two piezoelectric deformation subsections 110 can drive the mirror 400 to move towards the second direction, so that the mirror 400 is far away from the photosensitive chip. The first voltage and the second voltage may be opposite.
When the camera module performs a photographing operation, when an image of a photographed object passing through the lens 400 is located between the photo sensor chip and the lens 400, it is described that the distance between the lens 400 and the photo sensor chip is relatively large, and the distance between the lens 400 and the photo sensor chip needs to be shortened, so that the photographed object passing through the image of the lens 400 is located on the photo sensor chip, at this time, a first voltage may be applied to the at least two piezoelectric deformation sub-portions 110, so that the at least two piezoelectric deformation sub-portions 110 drive the lens 400 to move toward a first direction, so that the lens 400 is close to the photo sensor chip, and further, the photographed object passing through the image of the lens 400 is located on the photo sensor chip, so that the camera module completes focusing. When the image of the object passing through the lens 400 is located on the side of the photo sensor chip away from the lens 400, it is indicated that the distance between the lens 400 and the photo sensor chip is small, and the distance between the lens 400 and the photo sensor chip needs to be increased to enable the image of the object passing through the lens 400 to be located on the photo sensor chip, at this time, a second voltage may be applied to the at least two piezoelectric deformation subsections 110, so that the at least two piezoelectric deformation subsections 110 drive the lens 400 to move towards a second direction, so that the lens 400 is far away from the photo sensor chip, and the image of the object passing through the lens 400 is located on the photo sensor chip, so that the camera module completes focusing.
This kind of process of focusing is comparatively simple to can make things convenient for the camera module to focus, simultaneously, also can make things convenient for camera module control, and then make things convenient for the designer to design the controlling means of camera module or write control program.
In the embodiment of the present invention, the moving direction of the mirror plate 400 driven by the piezoelectric deformation portion 100 can be controlled by controlling the magnitude of the voltage applied to the piezoelectric deformation sub-portion 110, specifically, when the voltage applied to the piezoelectric deformation sub-portion 110 is large, the deformation amount of the piezoelectric deformation portion 100 is large, and at this time, the voltage applied to the piezoelectric deformation sub-portion 110 is reduced, and the deformation amount of the piezoelectric deformation portion 100 is reduced, in this case, the moving direction of the mirror plate 400 driven by the piezoelectric deformation portion 100 when the voltage is large is opposite to the moving direction of the mirror plate 400 driven when the voltage is reduced. Alternatively, when the voltage applied to the piezoelectric transformer 110 is small, the amount of deformation of the piezoelectric transformer 100 is small, and at this time, the voltage applied to the piezoelectric transformer 110 is increased, and the amount of deformation of the piezoelectric transformer 100 is increased, in this case, the moving direction of the driving mirror 400 by the piezoelectric transformer 100 when the voltage is large is opposite to the moving direction of the driving mirror 400 when the voltage is small, and thus, in the embodiment of the present invention, the moving direction of the driving mirror 400 by the piezoelectric transformer 100 can also be controlled by controlling the magnitude of the voltage applied to the piezoelectric transformer 110.
The mirror 400 is drivingly connected to the piezoelectric deformation 100. Specifically, the lens 400 may be connected to the piezoelectric deformation portion 100 in a driving manner in various ways, for example, the lens 400 may be disposed on the piezoelectric deformation portion 100 in a snap-fit manner, which is convenient for detachment, or the lens 400 may be directly connected to the piezoelectric deformation portion 100 in an adhesive manner, which is simple to operate, which is not limited in the embodiment of the present invention.
Optionally, the camera module may further include a lens holder 500, the lens holder 500 is connected to the piezoelectric deformation portion 100, the lens 400 is disposed on the lens holder 500, and the piezoelectric deformation portion 100 drives the lens 400 to move in a direction close to the photo chip or away from the photo chip through the lens holder 500. Under the circumstances, the lens support 500 can play a role in fixing the lens 400, and meanwhile, the lens support 500 can also avoid the lens 400 from directly contacting with the piezoelectric deformation part 100, so that in the deformation process of the piezoelectric deformation part 100, the deformation amount of each position on the piezoelectric deformation part 100 is slightly different, the lens 400 is prevented from being stressed unevenly, and the reliability of the camera module can be improved.
Meanwhile, the camera module is generally provided with a plurality of lenses 400, the process that each lens 400 and the piezoelectric deformation part 100 are directly arranged is tedious, and the lens 400 can be prevented from being arranged on the piezoelectric deformation part 100 for many times through one-time installation of the lens support 500, so that the installation process that the plurality of lenses 400 are in driving connection with the piezoelectric deformation part 100 is simplified.
Further, the lens holder 500 may include a cylindrical body 510 and a connection flange 520, the connection flange 520 being provided on an outer sidewall of one end of the cylindrical body 510; the cylindrical body 510 is provided in the piezoelectric deformation portion 100, and the connection flange 520 is overlapped on the piezoelectric deformation portion 100 and connected to the piezoelectric deformation portion 100. The connection flange 520 enables the lens holder 500 to be connected to the piezoelectric deformation portion 100 in a lap joint manner, which is a simple assembly manner, thereby facilitating the installation work of a worker.
The lens holder 500 may be connected to the piezoelectric deformation portion 100 in various ways, for example, the lens holder 500 is connected to the piezoelectric deformation portion 100 by a screw, or the lens holder 500 is connected to the piezoelectric deformation portion 100 by a snap, and the like, which is not limited in this embodiment of the present invention. In an alternative embodiment, the lens holder 500 may be connected to the piezoelectric deformation portion 100 through an adhesive layer, that is, the lens holder 500 is adhered to the piezoelectric deformation portion 100 in a simple manner, which is easy to operate, and the adhered lens holder 500 is reliably connected to the piezoelectric deformation portion 100.
In an alternative embodiment, the driving motor may further include a deformable housing 300, the piezoelectric deformation part 100 is located in the deformable housing 300, and the deformable housing 300 is elastically deformable with the piezoelectric deformation part 100, and the deformable housing 300 is connected to the piezoelectric deformation part 100. The deformable housing 300 can protect the piezoelectric deformation part 100, avoid the piezoelectric deformation part 100 from colliding and damaging, or avoid the piezoelectric deformation part 100 from entering water and entering dust, and influence the use of the piezoelectric deformation part 100, thereby improving the stability of the driving mechanism. Specifically, the deformable housing 300 may be a rubber housing or a silicone housing, etc., which is not limited in the embodiment of the present invention.
In the embodiment of the present invention, the piezoelectric deformation portion 100 includes a plurality of piezoelectric deformation subsections 110, and in order to enable each piezoelectric deformation subsection 110 to be energized, in an alternative embodiment, any two adjacent piezoelectric deformation subsections 110 are electrically connected through the first electrical connection portion 120, so that each piezoelectric deformation subsection 110 can be energized, and thus each piezoelectric deformation subsection 110 is deformed in a telescopic manner under the condition of being energized, and further, the accumulated deformation amount of the piezoelectric deformation portion 100 is large, and the driving force is large. Meanwhile, the electrical connection method can avoid the situation that each piezoelectric deformation sub-portion 110 is provided with an electrical connection wire, so that the complex routing of the piezoelectric deformation portion 100 can be avoided, the circuit is simplified, and the power-on method is simple and reliable.
Specifically, the first electrical connection portion 120 may have various forms, such as a conductive sheet or a conductive wire, which is not limited in the embodiment of the present invention. Optionally, the first electrical connection 120 may be a conductive coating. The conductive coating can be directly disposed on the piezoelectric deformation sub-portion 110, so that the number of parts of the driving mechanism can be reduced, installation by workers is facilitated, and the structure of the driving mechanism is simple. Meanwhile, the conductive coating is easy to arrange, so that the manufacturing process of the driving mechanism is simplified, and the manufacturing process of the driving mechanism is shorter.
As described above, by the superposition of at least two piezoelectric deformation sub-portions 110, the transmission is realized by the summation of the deformations of each piezoelectric deformation sub-portion 110, so that the stroke of the driving motor is relatively large, thereby enabling the driving motor to drive the lens 400 to have a wide focusing range, and in order to enable the deformations of the piezoelectric deformation sub-portions 110 to be better summed and avoid the deformation loss of the piezoelectric deformation sub-portions 110, in an alternative embodiment, the piezoelectric deformation portion 100 may further include a supporting plate 130, and the supporting plate 130 is disposed between any two adjacent piezoelectric deformation sub-portions 110. The supporting sheet 130 is supported between any two adjacent piezoelectric deformation sub-portions 110, so that the deformation amount of the piezoelectric deformation sub-portion 110 is transmitted to the next piezoelectric deformation sub-portion 110 through the supporting sheet 130, the deformation amount of the next piezoelectric deformation sub-portion 110 plus the deformation amount of the previous piezoelectric deformation sub-portion 110 is continuously transmitted to the next piezoelectric deformation sub-portion 110 through the supporting sheet 130, and so on, thereby realizing the accumulation of the deformation amounts of the plurality of piezoelectric deformation sub-portions 110, further enabling the deformation of the plurality of piezoelectric deformation sub-portions 110 to be better accumulated, avoiding the deformation amount of the piezoelectric deformation sub-portions 110 being lost, and finally enabling the deformation amount of the piezoelectric deformation portion 100 to be larger, so as to enable the stroke of the driving mechanism to be larger.
Further, the support sheet 130 and the first electrical connection portion 120 may be both annular in shape, and the support sheet 130 may be located inside the first electrical connection portion 120. In this case, the support sheet 130 can be stably supported between any adjacent two piezoelectric deformation sub-sections 110, so that the stacked structure of the piezoelectric deformation sections 100 is more stable. Of course, the first electrical connection portion 120 may also be located inside the support plate 130.
In the embodiment of the present invention, the lens 400 can be precisely driven by controlling the voltage or current of the piezoelectric deformation portion 100, specifically, the driving motor may further include a control module 200, the control module 200 is electrically connected to the piezoelectric deformation portion 100, and when the piezoelectric deformation portion 100 is powered on, the control module 200 controls the current or voltage of the piezoelectric deformation portion 100. In the specific process of driving the lens 400 by the driving mechanism, in the process of driving the lens 400 by the driving mechanism, the control module 200 can precisely control the voltage or current of the piezoelectric deformation portion 100, so that the piezoelectric deformation portion 100 can be precisely deformed, the piezoelectric deformation portion 100 can drive the lens 400 to precisely move, and finally the lens 400 can be precisely focused, so that the imaging quality of the camera module is good.
Specifically, the camera module may be provided with a power supply capable of supplying the piezoelectric deformation portion 100 with electric power required for deformation. Of course, the camera module may not be provided with a power supply, and the electronic device provided with the camera module may provide the electric energy required for deformation for the piezoelectric deformation portion 100.
Based on the camera module disclosed in the embodiment of the invention, the invention further discloses electronic equipment, and the disclosed electronic equipment comprises the camera module disclosed in any embodiment.
The electronic device disclosed in the embodiment of the present invention may be a smart phone, a tablet computer, an electronic book reader, a wearable device (e.g., a smart watch), an electronic game machine, or the like, and the specific type of the electronic device is not limited in the embodiment of the present invention.
In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (13)
1. The utility model provides a camera module which characterized in that, includes sensitization chip, lens (400) and driving motor, wherein:
the lens (400) with the sensitization chip sets up relatively, driving motor includes piezoelectricity deformation portion (100), piezoelectricity deformation portion (100) includes two at least piezoelectricity deformation sub-parts (110), two at least piezoelectricity deformation sub-parts (110) superpose one by one, and two at least piezoelectricity deformation sub-parts (110) can warp along the direction of superpose under the circumstances of circular telegram to the drive lens (400) move towards first direction or second direction, wherein, first direction is for being close to the direction of sensitization chip, the second direction is for keeping away from the direction of sensitization chip.
2. The camera module according to claim 1, wherein the at least two piezoelectric deformation subsections (110) drive the lens (400) to move in the first direction under the condition that a first voltage is applied to the at least two piezoelectric deformation subsections (110); the at least two piezoelectric deformation subsections (110) drive the lens (400) to move towards the second direction under the condition that a second voltage is applied to the at least two piezoelectric deformation subsections (110).
3. The camera module according to claim 1, further comprising a lens holder (500), wherein the lens holder (500) is connected to the piezoelectric deformation portion (100), the lens (400) is disposed on the lens holder (500), and the piezoelectric deformation portion (100) drives the lens (400) to move in a direction close to or away from the photo chip through the lens holder (500).
4. The camera module according to claim 3, characterized in that the lens holder (500) comprises a cylindrical body (510) and a connecting flange (520), the connecting flange (520) being provided on an outer side wall of one end of the cylindrical body (510);
the cylindrical body (510) is arranged in the piezoelectric deformation part (100), and the connecting flange (520) is lapped on the piezoelectric deformation part (100) and is connected with the piezoelectric deformation part (100).
5. The camera module according to claim 3, characterized in that the lens holder (500) is connected to the piezoelectric deformation (100) by means of an adhesive layer.
6. The camera module according to claim 1, wherein the driving motor further comprises a deformable housing (300), the piezoelectric deformation portion (100) is located in the deformable housing (300), and the deformable housing (300) is elastically deformable with the piezoelectric deformation portion (100), and the deformable housing (300) is connected to the piezoelectric deformation portion (100).
7. The camera module according to claim 1, wherein any two adjacent piezoelectric deformation subsections (110) are electrically connected through a first electrical connection section (120).
8. The camera module according to claim 7, wherein the piezoelectric deformation portion (100) further comprises a support piece (130), and the support piece (130) is disposed between any two adjacent piezoelectric deformation sub-portions (110).
9. The camera module according to claim 8, wherein the support sheet (130) and the first electrical connection portion (120) are both annular in shape, and the support sheet (130) is located inside the first electrical connection portion (120).
10. The camera module according to claim 7, wherein the first electrical connection portion (120) is a conductive coating.
11. The camera module according to claim 1, wherein the piezoelectric deformation sub-portion (110) is a piezoelectric ceramic sheet.
12. The camera module according to claim 1, wherein the driving motor further comprises a control module (200), the control module (200) is electrically connected to the piezoelectric deformation portion (100), and the control module (200) controls the magnitude of the current or the magnitude of the voltage of the piezoelectric deformation portion (100) when the piezoelectric deformation portion (100) is energized.
13. An electronic device, comprising the camera module according to any one of claims 1 to 12.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010210680.5A CN111343372A (en) | 2020-03-23 | 2020-03-23 | Camera module and electronic equipment |
| PCT/CN2021/081740 WO2021190407A1 (en) | 2020-03-23 | 2021-03-19 | Camera module and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010210680.5A CN111343372A (en) | 2020-03-23 | 2020-03-23 | Camera module and electronic equipment |
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| CN111343372A true CN111343372A (en) | 2020-06-26 |
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| CN202010210680.5A Pending CN111343372A (en) | 2020-03-23 | 2020-03-23 | Camera module and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112698465A (en) * | 2020-12-30 | 2021-04-23 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| WO2021190407A1 (en) * | 2020-03-23 | 2021-09-30 | 维沃移动通信有限公司 | Camera module and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021190407A1 (en) * | 2020-03-23 | 2021-09-30 | 维沃移动通信有限公司 | Camera module and electronic device |
| CN112698465A (en) * | 2020-12-30 | 2021-04-23 | 维沃移动通信有限公司 | Camera module and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021190407A1 (en) | 2021-09-30 |
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