CN217656548U

CN217656548U - Capacitive camera driving device with focusing function

Info

Publication number: CN217656548U
Application number: CN202221940027.5U
Authority: CN
Inventors: 王忠岭; 吴发权; 张曦
Original assignee: Liaoning Zhonglan Photoelectric Technology Co Ltd
Current assignee: Liaoning Zhonglan Photoelectric Technology Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-10-25
Anticipated expiration: 2032-07-26

Abstract

The utility model relates to a capacitive camera driving device with focusing function, belonging to the technical field of optical element driving; the device includes the base: comprises a bottom plate and a retaining wall; an optical unit: the device comprises a fixed lens arranged on a retaining wall and a movable lens component arranged on a bottom plate, wherein the fixed lens and the movable lens component are arranged on the same optical axis; two sides of the movable lens component extend outwards to form connecting parts, and the top of each connecting part is provided with a friction rod which can drive the movable lens component to move axially along the optical axis; a sensing unit: the voice coil motor is used for focusing; a pre-pressing unit: the pre-pressing device is used for pre-pressing the friction rod and the sensing unit; the utility model discloses a capacitor scheme has replaced hall sensing element scheme, has effectively avoided magnetic interference, has further reduced the height of motor, has saved the space, and the effect of focusing is better.

Description

Capacitive camera driving device with focusing function

Technical Field

The utility model belongs to the technical field of the optical element drive, concretely relates to capacitanc drive arrangement that makes a video recording with focusing function.

Background

Because a Voice Coil Motor (VCM) has the advantages of simple structure, small volume, low energy consumption, no noise, high acceleration, fast response speed, accurate displacement, low price and the like, the automatic focusing function of the Voice Coil Motor is still the scheme with the highest cost performance for the automatic focusing device of the camera at present; the optical lens is fixed on the voice coil motor carrier, the carrier serves as a power unit for lens movement, the voice coil motor carrier is connected with the stator part through the reed, and when the motor is electrified, the carrier linearly moves along the optical axis direction of the lens, so that the automatic focusing and focusing functions are realized.

In the process, the voice coil motor adopts the closed-loop control component to feed back the carrier displacement, and the corresponding driving current is timely adjusted, but the following problems exist: most of the existing voice coil motors adopt Hall sensing elements to detect the change of a magnetic field in the motor, so that the purpose of closed-loop control is achieved, but the Hall sensing elements and magnets and coils matched with the Hall sensing elements have higher requirements on arrangement space, otherwise, enough thrust to a carrier cannot be ensured, however, under the condition of achieving set thrust, the internal volume of the voice coil motor is relatively larger, which does not meet the design requirements of gradual lightness, thinness and miniaturization of electronic products applying the voice coil motor, and therefore, the thrust of the existing voice coil motor is always restricted by the structure; in addition, the Hall sensing assembly is complex in mode and process, high in assembly cost of a production line, large in external interference and sensitive to external magnetic fields and temperature changes.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the utility model provides a capacitanc drive arrangement that makes a video recording with focusing function, include:

base 1: comprises a bottom plate 1.1 and a retaining wall 1.2;

the optical unit 3: the device comprises a fixed lens 3.1 arranged on a retaining wall 1.2 and a movable lens component arranged on a bottom plate 1.1, wherein the fixed lens 3.1 and the movable lens component are arranged on the same optical axis; two sides of the movable lens component extend outwards to form connecting parts 3.3, the top of each connecting part 3.3 is provided with a friction rod 3.5, and the friction rods 3.5 can drive the movable lens component to move axially along an optical axis;

the sensing unit 6: the voice coil motor is used for focusing; the lens module comprises a capacitance sheet 6.1 arranged on the side surface of a connecting part 3.3 of the movable lens module, and a capacitance plate 6.2 corresponding to the capacitance sheet 6.1 is arranged on the end surface of a retaining wall 1.2;

a pre-pressing unit 5: for pre-pressing the friction bar 3.5 and the sensor unit 6.

Further, the sensing unit 6 further includes: a second groove 6.3 is formed in the bottom of the connecting part 3.3, and a ball 6.4 is arranged in the second groove 6.3 in a rolling mode; a sliding groove 6.5 is arranged on the bottom plate 1.1, a metal groove 6.9 matched with the sliding groove is arranged in the sliding groove 6.5, and the ball 6.4 is in rolling connection with the metal groove 6.9; the metal groove 6.9, the ball 6.4 and the capacitor plate 6.1 are electrically connected.

Further, the sensing unit 6 further includes: a second groove 6.3 is formed in the bottom of the connecting portion 3.3, a sliding groove 6.5 is formed in the bottom plate 1.1, a positioning rod 6.7 is arranged in the sliding groove 6.5, and the second groove 6.3 is slidably buckled on the positioning rod 6.7; the positioning rod 6.7 is electrically connected with the capacitor plate 6.1.

Furthermore, the bottom surface of the second groove 6.3 is provided with a metal plate 6.6 in an attaching manner, and the metal plate 6.6 is communicated with the capacitor plate 6.5.

Furthermore, the pre-pressing unit 5 comprises a metal reinforcing member 1.4 arranged inside the bottom plate 1.1 and a first magnet 5.5 arranged at the bottom of the connecting part 3.3, and the metal reinforcing member 1.4 and the first magnet 5.5 attract each other to generate pre-pressing force.

Further, pre-compaction unit 5 including setting up at the inside pre-compaction magnetite 5.1 of connecting portion 3.3, connecting portion 3.3's top surface is provided with lower friction disc 5.2, and the recess of placing friction stick 3.5 is seted up at the top of lower friction disc 5.2, and the outside of connecting portion 3.3 is provided with friction disc 5.3, and upward 5.3 of friction disc upwards extend and buckle back contact friction stick 3.5, go up friction disc 5.3 and pre-compaction magnetite 5.1 inter attraction and carry out the pre-compaction to friction stick 3.5.

Further, the capacitor plates 6.2 are arranged along the axial direction in an unequal manner.

Further, the end of the friction rod 3.5 is fixedly connected with a driving component 4.

Furthermore, the driving component 4 includes a piezoelectric ceramic 4.3 and an elastic body 4.2, and one end of the friction rod 3.5, the elastic body 4.2 and the piezoelectric ceramic 4.3 are fixedly connected in sequence.

Furthermore, the driving component 4 further comprises a limiting ring 4.1, and the limiting ring 4.1 is sleeved on the friction rod 3.5.

The beneficial effects of the utility model reside in that:

1. the utility model adopts the piezoelectric ceramic vibrator as the driving device, after the piezoelectric ceramic vibrator loads the high-frequency alternating voltage, the high-frequency continuous vibration along with the voltage change can be generated, thereby the elastic body and the movable lens component fixed with the elastic body are driven to do the linear motion by the generated friction, and the effects of large displacement, high speed and high precision are realized; the utility model discloses use piezoceramics drive assembly to replace the magnetite and the coil structure of traditional voice coil motor, effectively avoided magnetic interference, effectively overcome the defects such as the thrust of traditional voice coil motor is not enough, the displacement volume is not enough, magnetite interference;

2. the utility model adopts the capacitance scheme to replace the Hall sensing element scheme, the chip is external, the four-side magnet structure is adopted, the capacitance plate hardly occupies the internal space, the thrust is increased while the volume is reduced, the large stroke is realized, meanwhile, the assembly parts of the capacitance plate are single, the production process is reduced, and meanwhile, the influence of the external magnetic field and the temperature is not easily caused; the capacitor plate has the following advantages in side placement: one of the two is vertical to the original electric field direction of the mobile phone, and no electromagnetic interference exists; secondly, the height of the motor is further reduced, and the space is saved;

3. the utility model discloses use magnetism to inhale pre-compaction structure and provide the pre-pressure for the friction stick, it is more nimble to compare shell fragment or elastic sleeve pre-compaction structure among the prior art, avoids pre-pressure undersize or too big, and the effect of focusing is better.

Drawings

Fig. 1 is a schematic structural diagram of a capacitive image pickup driving device having a focusing function after covering a protective housing according to an embodiment of the present invention;

fig. 2 is a schematic view of a capacitive camera driving device with a capacitive plate and a focusing function according to an embodiment of the present invention;

fig. 3 is a schematic view of a capacitive camera driving device with a focusing function according to an embodiment of the present invention, in which a capacitor plate is removed;

fig. 4 is an exploded view of a capacitive camera driving device mechanism with a focusing function according to an embodiment of the present invention;

fig. 5 is an exploded view of an inverted capacitive camera driving device mechanism with a focusing function according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a base according to an embodiment of the present invention;

fig. 7 is a bottom view of an optical unit according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a stacked resonator unit according to an embodiment of the present invention;

fig. 9 is a schematic mechanical diagram of a cymbal-shaped vibrator unit according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a magnetic suction pre-pressing unit according to an embodiment of the present invention;

fig. 11 is a schematic mechanism diagram of an inverted movable lens module with a positioning rod according to an embodiment of the present invention;

in the drawing, 1 is a base, 1.1 is a bottom plate, 1.2 is a retaining wall, 1.3 is a terminal leading-out region, 1.4 is a metal reinforcement, 1.5 is a metal material belt, 1.6 is a hole, 2 is a protective housing, 2.1 is a light-passing hole, 3 is an optical unit, 3.1 is a fixed lens, 3.2 is a lens carrier, 3.3 is a connecting portion, 3.4 is a first lens, 3.5 is a friction bar, 4 is a driving component, 4.1 is a spacing ring, 4.2 is an elastic body, 4.3 is a piezoelectric ceramic, 4.4 is an electrode, 4.5 is a circuit board, 5 is a pre-pressing unit, 5.1 is a pre-pressing magnet, 5.2 is a lower friction plate, 5.3 is an upper friction plate, 5.4 is a magnetic suction plate, 5.5 is a first magnet, 6 is a sensing unit, 6.1 is a capacitor plate, 6.2 is a capacitor plate, 6.3 is a second groove, 6.4 is a ball, 6.4 is a positioning rod, 6.6.6.8 a metal chute is a metal groove, and an opening is a metal chute.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

In this embodiment, a capacitive image pickup driving apparatus having a focusing function, as shown in fig. 1 to 5, includes:

base 1: as shown in fig. 6, it includes a bottom plate 1.1 and a retaining wall 1.2; the bottom plate 1.1 is internally provided with a metal reinforcing piece 1.4 and a metal material belt 1.5 which are integrally formed by injection molding, and the bottom plate 1.1 is also provided with a clamping part which is used for clamping and fixing the metal material belt 1.5 and the bottom plate 1.1; the metal reinforcing part 1.4 is used for improving the strength of the base 1, and the metal material belt 1.5 is used for conducting signals; the bottom parts of two end surfaces of the retaining wall 1.2 extend outwards to form a terminal leading-out area 1.3, the terminal leading-out area 1.3 is positioned outside the cavity, and a PIN PIN is arranged on the terminal leading-out area 1.3; two side surfaces of the retaining wall 1.2 are provided with hole digging grooves 1.6;

protective housing 2: the cover is established on base 1, forms the cavity with base 1, the middle part of 2 both sides of protective housing is provided with logical unthreaded hole 2.1 respectively, and the position of logical unthreaded hole 2.1 corresponds with the position of dug hole groove 1.6.

The optical unit 3: as shown in fig. 7, includes two fixed lens sets 3.1 and two movable lens assemblies; the two groups of fixed lenses 3.1 are respectively arranged in the hole digging grooves 1.6 of the retaining wall 1.2, the two groups of movable lens components are oppositely and slidably arranged on the bottom plate 1.1, and the light through holes 2.1, the hole digging grooves 1.6, the fixed lenses 3.1 and the movable lens components are arranged on the same optical axis; the movable lens component comprises a lens carrier 3.2 and a first lens 3.4 embedded in the lens carrier 3.2, and the lower parts of the side surfaces of the two sides of the lens carrier 3.2 respectively extend outwards to form a connecting part 3.3 which is integrated with the lens carrier 3.2 into a whole; the top of connecting portion 3.3 is provided with friction stick 3.5, and friction stick 3.5 can drive movable lens subassembly and carry out axial motion along the optical axis.

The driving assembly 4: one end of the friction rod 3.5 is fixedly connected with the movable lens assembly, and the movable lens assembly is divided into a laminated vibrator unit and a cymbal-shaped vibrator unit and is used for driving the movable lens assembly to move;

laminated vibrator unit: as shown in fig. 8, the piezoelectric ceramic comprises a spacing ring 4.1, an elastic body 4.2 and a laminated piezoelectric ceramic 4.3; the limiting ring 4.1 is of an annular structure with a through hole in the middle, and two ends of the friction rod 3.5 are respectively sleeved with one limiting ring 4.1 and fixed; the elastic body 4.2 is in an arc shape, a convex part of the elastic body 4.2 is fixedly connected with one end of the friction rod 3.5, and the upper end and the lower end of the opening part are respectively fixedly connected with any two opposite surfaces of the laminated piezoelectric ceramic 4.3; one surface of the laminated piezoelectric ceramic 4.3, which is far away from the convex part of the elastic body 4.2, is provided with an electrode 4.4;

cymbal-shaped vibrator unit: as shown in fig. 9, the device comprises a limiting ring 4.1, an elastic body 4.2 and a piezoelectric ceramic 4.3; the limiting ring 4.1 is of an annular structure with a through hole in the middle, and two ends of the friction rod 3.5 are respectively sleeved with one limiting ring 4.1 and fixed; the elastic body 4.2 is in the shape of a round cymbal or a rectangular cymbal, the number of the elastic bodies can be one or two, when the number of the elastic bodies is one, the elastic body 4.2 is arranged between the piezoelectric ceramic 4.3 and the friction rod 3.5, the convex part of the elastic body 4.2 is fixedly connected with one end of the friction rod 3.5, and the plane part is fixedly connected with the piezoelectric ceramic 4.3; when the number of the elastic bodies 4.2 is two, the plane parts of the elastic bodies 4.2 are oppositely arranged, two sides of the piezoelectric ceramics 4.3 are fixedly connected with the plane parts to form a multilayer structure, and the convex part of one elastic body 4.2 is fixedly connected with one end of the friction rod 3.5; the size of the section of the piezoelectric ceramic 4.3 is equal to that of the largest section of the elastic body 4.2; still be provided with circuit board 4.5 on cymbal shape oscillator unit's the elastomer 4.2, circuit board 4.5 is used for connecting outside alternating current signal source, and the laminating of a face of circuit board 4.5 and the bellying part of elastomer 4.2 is one side, be provided with wiring end and a plurality of welding end on the circuit board 4.5, conveniently insert external component.

The magnetic suction pre-pressing unit 5: as shown in fig. 10, the optical lens pre-pressing device is used for providing pre-pressing force for the friction bar 3.5 and the sensing unit 6, and includes a pre-pressing magnet 5.1 disposed inside a connecting portion 3.3 on one side of the optical unit 3, a lower friction plate 5.2 is disposed on a top surface of the connecting portion 3.3, a half groove for placing the friction bar 3.5 is disposed on a top of the lower friction plate 5.2, the half groove is in frictional contact with the friction bar 3.5, an upper friction plate 5.3 is disposed on one side of the connecting portion 3.3 away from the lens carrier 3.2, the upper friction plate 5.3 extends upward and bends toward a side where the friction bar 3.5 is located, a lower surface of the upper friction plate 5.3 is in frictional contact with the friction bar 3.5, and the upper friction plate 5.3 and the pre-pressing magnet 5.1 attract each other to pre-press the friction bar 3.5;

furthermore, a prepressing magnetic attraction piece 5.4 is arranged at the top of the bending section of the upper friction plate 5.3 of the magnetic attraction prepressing unit 5, the prepressing magnetic attraction piece 5.4 and the prepressing magnet 5.1 attract each other to prepress the friction rod 3.5, and the prepressing force is further enhanced;

the magnetic suction prepressing unit 5 further comprises a first magnet 5.5 arranged at the bottom of the connecting portion 3.3, and the first magnet 5.5 and the metal reinforcing piece 1.4 are matched to generate prepressing force to prepress the sensing unit 6.

The sensing unit 6: the voice coil motor is used for focusing; the capacitor comprises a capacitor sheet 6.1 arranged on one side face of a connecting part 3.3, and two end faces of a retaining wall 1.2 are respectively provided with a capacitor plate 6.2 corresponding to the capacitor sheet 6.1; the capacitance plate 6.2 is divided into two parts in the axial direction, under the movement of the lens carrier 3.2 driving the capacitance plate 6.1, the areas of the capacitance plate 6.1 corresponding to the two parts of the capacitance plate 6.2 are different, so that different amounts of electric charge are accumulated, a certain tolerance difference is formed, after an external device connected to the voice coil motor performs differential signal operation, a feedback signal is sent to the voice coil motor, so that the positions of the lens carrier 3.2 and the first lens 3.4 carried by the lens carrier are judged, and the driving current is adjusted again according to the feedback signal, so that the focusing function of the voice coil motor is realized;

the first scheme is as follows:

one or more second grooves 6.3 are formed in the bottom of the connecting portion 3.3, and balls 6.4 are arranged in the second grooves 6.3 in a rolling mode; a first groove is formed in the bottom plate 1.1, a sliding groove 6.5 is formed in the bottom wall of the first groove, a metal groove 6.9 matched with the sliding groove is formed in the sliding groove 6.5, the ball 6.4 is in rolling connection with the metal groove 6.9, the positioning and guiding effects are achieved in the moving process of the lens carrier 3.2, the friction force between the lens carrier 3.2 and the base 1 is reduced, the displacement precision and speed of the lens carrier 3.2 are improved, and therefore accurate and rapid focusing of the voice coil motor is achieved; the first magnet 5.5 is matched with the metal reinforcing piece 1.4 to pre-press the ball 6.4;

the end part of the metal groove 6.9 extends outwards to form a PIN foot for connecting an external element; a metal plate 6.6 is pressed between the second groove 6.3 and the ball 6.4, the metal plate 6.6 is communicated with the capacitor chip 6.1, and an electric signal is transmitted to the capacitor chip 6.1 through the PIN PIN sequentially via the metal groove 6.9, the ball 6.4 and the metal plate 6.6; the specific electrical connection relationship is as follows: two parts of the capacitor plate 6.2 are respectively extended to form PIN feet, one end of the metal material belt 1.5 is extended to form the PIN feet, the other end of the metal material belt is in contact with the driving component 4, and each PIN foot is used for connecting an external element to transmit an electric signal;

the lateral wall of first recess is equipped with one or more opening 6.8, and spacing ring 4.1 sets up in opening 6.8, stability when can improving friction stick 3.5 and move.

Scheme II:

as shown in fig. 11, one or more second grooves 6.3 are arranged at the bottom of the connecting portion 3.3, a first groove is arranged on the bottom plate 1.1, a chute 6.5 is arranged on the bottom wall of the first groove, a positioning rod 6.7 is arranged in the chute 6.5, the second groove 6.3 is slidably buckled on the positioning rod 6.7, a metal plate 6.6 is pressed between the second groove 6.3 and the positioning rod 6.7, the metal plate 6.6 is communicated with the capacitor piece 6.1, and the first magnet 5.5 is matched with the metal reinforcement 1.4 to pre-press the positioning rod 6.7; the sliding groove 6.5 is provided with one or more openings 6.8, one end of the metal material belt 1.5 is connected to the positioning rod 6.7 through the opening 6.8, the other end of the metal material belt extends to form a PIN foot, and the electric signal is transmitted to the capacitor chip 6.1 through the metal material belt 1.5, the positioning rod 6.7 and the metal plate 6.6 in sequence; the locating lever 6.7 plays the location guide effect at camera lens carrier 3.2 removal in-process, and reduces the frictional force between camera lens carrier 3.2 and the base 1, improves camera lens carrier 3.2's displacement precision and speed to realize the accurate quick focusing of motor, spacing ring 4.1 sets up in opening 6.8, can improve the stability when rubbing stick 3.5 moves.

In this embodiment, the capacitive image pickup driving device with a focusing function has the following working principle: the alternating current signals with corresponding phase difference and corresponding frequency are connected into a driving component 4 (a laminated vibrator unit is connected with an electrode 4.4 on laminated piezoelectric ceramic 4.3, and a cymbal-shaped vibrator unit is connected with a circuit board 4.5), because the phase difference of high-frequency voltage loaded by each partition of the 4.3 piezoelectric ceramic pieces is different, the 4.3 piezoelectric ceramic pieces can be extended or shortened in different degrees, continuous and rapid change is generated between the maximum extension state and the minimum shortening state, the corresponding elastic body 4.2 can be deformed, and further the friction rod 3.5 can be vibrated, and the friction rod 3.5, the upper friction plate 5.3 and the lower friction plate 5.2 can generate friction motion to drive the movable lens component to linearly move along the corresponding direction of the camera optical axis. The phase difference of the high-frequency alternating current signals of the two input circuits of the driving component 4 is changed to change the motion direction of the standing wave, so that the movable optical unit 3 is changed to move linearly along the direction opposite to the shooting optical axis.

It should be noted that all directional indicators (such as upper, lower, inner, outer, top, bottom, 8230; \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components in a specific posture (as shown in the drawings), etc., and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A capacitive image pickup drive device having a focusing function, comprising:

base: comprises a bottom plate and a retaining wall;

an optical unit: the device comprises a fixed lens arranged on a retaining wall and a movable lens component arranged on a bottom plate, wherein the fixed lens and the movable lens component are arranged on the same optical axis; two sides of the movable lens component extend outwards to form connecting parts, and the top of each connecting part is provided with a friction rod which can drive the movable lens component to move axially along the optical axis;

a sensing unit: the voice coil motor is used for focusing; the lens component comprises a capacitor sheet arranged on the side surface of a connecting part of the movable lens component, and a capacitor plate corresponding to the capacitor sheet is arranged on the end surface of a retaining wall;

a pre-pressing unit: the pre-pressing device is used for pre-pressing the friction rod and the sensing unit.

2. The capacitive image pickup driving apparatus having a focusing function according to claim 1, wherein the sensor unit further comprises: a second groove is formed in the bottom of the connecting part, and balls are arranged in the second groove in a rolling manner; the bottom plate is provided with a sliding chute, a metal groove matched with the sliding chute is arranged in the sliding chute, and the ball is connected with the metal groove in a rolling way; the metal groove, the ball and the capacitor piece are electrically connected, and the pre-pressing unit is used for pre-pressing the ball.

3. The capacitive image pickup driving device with a focusing function according to claim 1, wherein the sensor unit further includes: the bottom of the connecting part is provided with a second groove, the bottom plate is provided with a sliding chute, a positioning rod is arranged in the sliding chute, and the second groove is slidably buckled on the positioning rod; the locating rod is electrically connected with the capacitor piece, and the prepressing unit is used for prepressing the locating rod.

4. The capacitive image pickup driving device with a focusing function according to claim 2 or 3, wherein: the bottom surface laminating of second recess be provided with the metal sheet, metal sheet and electric capacity piece intercommunication.

5. The capacitive image pickup driving device having a focusing function according to claim 2 or 3, wherein: the pre-pressing unit comprises a metal reinforcing piece arranged inside the bottom plate and a first magnet arranged at the bottom of the connecting part, and the metal reinforcing piece and the first magnet attract each other to generate pre-pressing force.

6. The capacitive image pickup driving device with a focusing function according to claim 1, wherein: the pre-compaction unit including setting up the pre-compaction magnetite in connecting portion inside, the top surface of connecting portion is provided with down the friction disc, the recess of placing the friction stick is seted up at the top of lower friction disc, the outside of connecting portion is provided with the friction disc, goes up the friction disc and upwards extends and buckle the back contact friction stick, go up the friction disc and pre-compaction magnetite inter attraction and carry out the pre-compaction to the friction stick.

7. The capacitive image pickup driving device having a focusing function according to claim 1, wherein: the capacitor plates are arranged along the axial direction in an unequal manner.

8. The capacitive image pickup driving device having a focusing function according to claim 1, wherein: the end part of the friction rod is fixedly connected with a driving component.

9. The capacitive image pickup driving device with a focusing function according to claim 8, wherein: the driving component comprises piezoelectric ceramics and an elastic body, and one end of the friction rod, the elastic body and the piezoelectric ceramics are fixedly connected in sequence.

10. The capacitive image pickup driving device with a focusing function according to claim 9, wherein: the driving assembly further comprises a limiting ring, and the limiting ring is sleeved on the friction rod.