Displacement type optical anti-shake camera module

Abstract

The utility model relates to the field of camera modules, and discloses a displacement type optical anti-shake camera module, which comprises a lens, an anti-shake unit and a motor assembly, the lens is arranged on the motor assembly, the anti-shake unit comprises a shell, a power part, a ball group, a support frame and a sensor part arranged on the support frame, the motor assembly is fixed on the shell, and the motor assembly is fixed on the shell. The power part can drive the supporting frame to slide in the horizontal direction, the ball set comprises a plurality of balls located between the shell and the supporting frame, the opposite surfaces of the supporting frame and the shell are each provided with a plurality of ball grooves for limiting the balls, and hard base plates are embedded in the bottoms of the ball grooves. The camera module is wide in range, stable and anti-shake.

Description

TECHNICAL FIELD

[0001] The utility model relates to a camera module field, concretely relates to a displacement type optical anti-shake camera module. BACKGROUND

[0002] Camera module is indispensable device in current mobile phone and other intelligent equipment, in order to ensure that can take clear image, usually need to carry out anti-shake processing to picture in camera module, as far as prior art is concerned, the most OIS optical anti-shake scheme that the smart mobile phone product adopts is through VCM motor drive lens to realize angle correction, but with the development of long focus lens and the improvement of intelligent equipment to photographing performance, the quality of lens module is more and more heavy, the requirement of motor is also higher and higher, and the conventional motor is difficult to realize good anti-shake effect, and angle correction by motor assembly is difficult to realize large range high-precision anti-shake, therefore, it is required to provide a camera module that can provide large range and stable anti-shake to large quality lens. SUMMARY

[0003] The utility model intends to provide a displacement type optical anti-shake camera module to provide a camera module that is large range and stable anti-shake.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a displacement type optical anti-shake camera module, including lens, anti-shake unit and motor assembly, the lens is installed on the motor assembly, the anti-shake unit includes the casing, power part, ball group, support frame and the sensor part installed on the support frame, the motor assembly is fixed on the casing, the power part can drive the support frame to slide in horizontal direction, the ball group includes a plurality of balls between the casing and the support frame, the opposite surface of the support frame and the casing is equipped with a plurality of ball grooves limiting the ball, the bottom of ball groove is embedded with hard backing plate.

[0005] The beneficial effects of the present scheme are as follows:

[0006] Through the above-mentioned setting, the lens is installed on the motor assembly, the motor assembly is fixed on the casing, the motor assembly in the present technical scheme bears the weight of the lens and drives the lens to reciprocatingly slide, adjusts the distance between the lens and the sensor part to focus, when anti-shake compensation is needed, the support frame is moved by the power part, and then the sensor part is moved on the horizontal plane to realize anti-shake, the sensor part is greatly reduced compared with the weight of the lens, the power part can drive it to move a larger amplitude to realize larger range anti-shake, and the support frame does not need to bear the weight of the lens, therefore, the same anti-shake effect can be realized for the lens assembly of large quality in the present technical scheme.

[0007] In addition, the ball set is arranged between the shell and the support frame, the opposite surfaces of the support frame and the shell are respectively provided with a plurality of ball grooves for limiting the balls, the balls are the support carriers, the support frame moves horizontally, the bottom of each ball groove is embedded with a hard pad, if the support frame is generally made of plastic material to reduce the weight, when the camera module falls, the ball hitting the support frame is easy to produce a pit on the support frame, which causes the subsequent ball to move not smoothly, and simultaneously affects the levelness of the support frame and further affects the anti-shake effect, therefore, the hard pad can avoid the above situation and help to ensure the stability of the anti-shake.

[0008] Preferably, as an improvement, the power unit comprises a magnet set and a coil set arranged correspondingly to the magnet set, the magnet set comprises a plurality of magnets fixed on the shell near the balls, the coil set comprises a plurality of coils with the same number as the magnets, the support frame is provided with a plurality of winding columns, and the coils are all wound and fixed on the winding columns.

[0009] Beneficial effects are that: after the coils are powered on, the current size and direction of the coils are controlled, the electromagnetic force generated by the coils drives the coils to move relative to the magnet set, the coils are fixed on the support frame, and then the support frame and the sensor unit are driven to move, when the anti-shake is performed, the sensor unit is driven to displace in the opposite direction of the shaking for compensation, and ideal anti-shake compensation effect is achieved.

[0010] Preferably, as an improvement, the spring piece unit and the bottom plate are further included, the spring piece unit comprises an inner plate, an outer plate and a plurality of spring wires, the sensor unit is fixed on the inner plate, the outer periphery of the inner plate is connected with the support frame, the inner plate and the outer plate are connected through the plurality of spring wires, the spring wires all have elasticity, and the outer plate is fixedly connected with the bottom plate.

[0011] Beneficial effects are that: through the above arrangement, when the support frame slides on the horizontal plane, the inner plate slides synchronously with the support frame, drives the sensor to move on the horizontal plane for anti-shake, the spring wires have elasticity, and in the sliding process of the support frame, the spring wires can play a buffering role, reduce the direct impact force of the support frame movement, and improve the stability of the anti-shake.

[0012] Preferably, as an improvement, the support frame is a hollow rectangular shape, and the support frame is provided with a protrusion at each of the four corners.

[0013] Beneficial effects are that: the hollow frame structure of the support frame effectively reduces the overall weight, is more easily driven by the driving unit for anti-shake, the ball grooves are arranged on the protrusions at the four corners to form diagonal line type support distribution, so that the load is evenly distributed on the four corners of the support frame, the structural stability is improved, and the ball grooves are arranged to limit the balls to avoid displacement of the balls.

[0014] Preferably, as an improvement, the surface of the support frame away from the magnet set is provided with a plurality of installation grooves with the same number as the magnets, and a magnetic iron sheet opposite to the magnet is fixed in each installation groove.

[0015] The beneficial effect is that: by setting the magnetic iron sheet at the bottom of the support frame, the magnetic iron sheet is opposite to the magnet, under the action of the magnetic force, the magnetic iron sheet drives the support frame to overcome the dead weight of the support frame to close to the shell, so that the support frame can float relative to the bottom plate, and the two sides of the ball group are respectively abutted with the support frame and the shell, the flatness of the support frame is ensured, and when the anti-shake compensation is carried out, the support frame is ensured to reciprocate on the same horizontal plane, and the stability of the optical axis is ensured.

[0016] Preferably, as an improvement, the sensor part comprises an image sensor, an infrared filter and a filter support, and the infrared filter is fixed on the filter support.

[0017] The beneficial effect is that: the infrared filter can effectively filter infrared light, reduce the influence of infrared light on the imaging quality, make the color of the shooting picture more natural and real, and improve the image restoration degree.

[0018] Preferably, as an improvement, the material of the hard pad plate is ceramic or metal.

[0019] The beneficial effect is that: when colliding, it is not easy to produce grooves, and it is not easy to produce debris, so as to avoid that the debris enters the lens or adheres to the image sensor, and influence the imaging quality of the photo.

[0020] Preferably, as an improvement, the support frame is further provided with a driving chip and a circuit part which are electrically connected with the coil.

[0021] Preferably, as an improvement, a plurality of buckles are further arranged on the two sides of the bottom plate, and the bottom plate is clamped with the shell through the buckles. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is an exploded view of the embodiment of the utility model;

[0023] Figure 2 It is a partial sectional view of the embodiment of the utility model;

[0024] Figure 3 It is a sectional view of the embodiment of the utility model. DETAILED DESCRIPTION

[0025] The following is further described in detail through specific embodiments:

[0026] The reference signs in the drawings of the specification include: lens 1, motor assembly 2, shell 3, support frame 4, coil 5, magnet 6, ball 7, ball groove 8, hard pad plate 9, magnetic iron sheet 10, inner plate 11, outer plate 12, spring wire 13, image sensor 14, infrared filter 15, filter support 16, driving chip 17, circuit part 18, buckle 19, winding column 20, bottom plate 21.

[0027] Embodiment

[0028] The embodiment is basically as Figures 1-3 shown, a displacement type optical anti-shake camera module is shown in Figure 1 , which comprises a lens 1, an anti-shake unit and a motor assembly 2, the lens 1 is installed on the motor assembly 2, the anti-shake unit comprises a shell 3, a power part, a ball set, a support frame 4 and a sensor part installed on the support frame 4, the ball set comprises a plurality of balls 7 located between the shell 3 and the support frame 4, the motor assembly 2 is fixed on the shell 3, the power part can drive the support frame 4 to slide in the horizontal direction, specifically, the power part comprises a magnet set and a coil set corresponding to the magnet set, the magnet set comprises a plurality of magnets 6, which are fixed on one side of the shell 3 close to the balls 7, the number of magnets in the embodiment is 4, the coil set comprises the same number of coils 5 as the magnets 6, the support frame 4 is provided with a plurality of winding columns 20, and the coils 5 are wound and fixed on the winding columns 20, after the coils 5 are energized, by controlling the current size and direction of the coils 5, the coils 5 generate electromagnetic force to drive the coils 5 to move relative to the magnet set, the coils 5 are fixed on the support frame 4, thereby driving the support frame 4 and the sensor part to move, and when anti-shake is performed, the sensor part is driven to displace in the opposite direction of the shaking to compensate, thereby achieving ideal anti-shake compensation effect.

[0029] As shown in Figure 2 , the number of balls 7 in the embodiment is 4, the opposite surfaces of the support frame 4 and the shell 3 are each provided with a plurality of ball grooves 8 limiting the balls 7, and the bottom of each ball groove 8 is embedded with a hard pad 9, the material of the hard pad 9 in the embodiment is ceramic or metal, which is not easy to produce grooves when colliding, and is also not easy to produce debris, thereby avoiding the debris from entering the lens 1 or adhering to the image sensor 14, and affecting the imaging quality of the photo, the support frame 4 is hollow and rectangular, the support frame 4 is provided with a protrusion at each of the four corners, the ball grooves 8 are formed on the protrusions, thereby reducing the overall weight and making it easier to be driven by the driving part for anti-shake, the ball grooves 8 are arranged on the protrusions at the four corners to form diagonal line type support distribution, so that the load is evenly distributed at the four corners of the support frame 4, thereby improving the structural stability, the ball grooves 8 limit the balls 7 to avoid displacement or falling off of the balls 7 during work; when anti-shake compensation is needed, the support frame 4 is driven to move by the power part, thereby driving the sensor part to move on the horizontal plane to achieve anti-shake, the weight of the sensor part is greatly reduced compared with the lens 1, and the power part can drive it to move a large amplitude to achieve a larger range of anti-shake; as Figure 3As shown, the support frame 4 in the embodiment is provided with mounting grooves of the same number as the number of magnets 6 on the surface away from the magnet group, and a magnetic iron sheet 10 opposite to the magnet 6 is fixed in each mounting groove. By arranging the magnetic iron sheet 10 at the bottom of the support frame 4, the magnetic iron sheet 10 is opposite to the magnet 6, and under the action of the magnetic force, the magnetic iron sheet 10 drives the support frame 4 to overcome the weight of the support frame 4 and move close to the shell 3, so that the support frame 4 can float relative to the bottom plate 21, and at the same time, the two sides of the ball group are respectively abutted against the support frame 4 and the shell 3, so as to ensure the flatness of the support frame 4, and at the same time, when the anti-shake compensation is performed, it is ensured that the support frame 4 always reciprocates on the same horizontal plane, so as to ensure the stability of the optical axis.

[0030] The spring sheet part and the bottom plate 21 are further included, the spring sheet part includes the inner plate 11, the outer plate 12 and a plurality of spring wires 13, the sensor part is fixed on the inner plate 11, the outer periphery of the inner plate 11 is connected with the support frame 4, the inner plate 11 and the outer plate 12 are connected through the plurality of spring wires 13, the spring wires 13 all have elasticity, the outer plate 12 is fixedly connected with the bottom plate 21, through the above arrangement, when the support frame 4 slides on the horizontal plane, the inner plate 11 synchronously slides with the support frame 4, drives the sensor to move on the horizontal plane to perform anti-shake, the spring wires 13 have elasticity, and in the sliding process of the support frame 4, the spring wires 13 can play a buffering role, reduce the direct impact force of the movement of the support frame 4, and improve the stability of anti-shake. The sensor part includes the image sensor 14, the infrared filter 15 and the filter support 16, the infrared filter 15 is fixed on the filter support 16, the infrared filter 15 can effectively filter infrared light, reduce the influence of the infrared light on the imaging quality, make the color of the shooting picture more natural and real, and improve the image restoration degree; the support frame 4 is further provided with the driving chip 17 and the circuit part 18 which are electrically connected with the coil 5, the inner plate 11 is provided with the electronic component part, and the circuit part 18 is further electrically connected with the electronic component part; a plurality of buckles 19 are further arranged on the two sides of the bottom plate 21, and the bottom plate 21 is clamped with the shell 3 through the buckles 19. The material of the bottom plate 21 in the embodiment is steel.

[0031] The specific implementation process is as follows:

[0032] Through the above arrangement, the lens 1 is mounted on the motor assembly 2, and the motor assembly 2 is fixed on the shell 3. The motor assembly 2 in the technical solution bears the weight of the lens 1 and drives the lens 1 to reciprocate, so as to adjust the distance between the lens 1 and the sensor part to focus. When the anti-shake compensation is needed, the support frame 4 is driven to move by the power part, and then the sensor part is driven to move on the horizontal plane to realize anti-shake. The weight of the sensor part is greatly reduced compared with the lens 1, the power part can drive it to move a large amplitude to realize a larger range of anti-shake, and at the same time, the support frame 4 does not need to bear the weight of the lens 1. Therefore, the same anti-shake effect can be realized even for the lens 1 assembly with large mass in the technical solution.

[0033] In addition, the ball set is arranged between the shell 3 and the support frame 4, the opposite surfaces of the support frame 4 and the shell 3 are respectively provided with a plurality of ball grooves 8 for limiting the balls 7, the balls 7 are the support carriers between the support frame 4 and the shell 3, so that the support frame 4 can move horizontally, the bottom of each ball groove 8 is embedded with a hard pad 9, if the support frame 4 is generally made of plastic material in order to reduce the weight, when the camera module falls, the balls 7 are easy to produce pits on the support frame 4 by impacting the support frame 4, which causes the subsequent balls 7 to move unsmoothly, and meanwhile, the horizontal degree of the support frame 4 is easy to be affected, and then the anti-shake effect is affected, therefore, the hard pad 9 is arranged to avoid the above situation, which is helpful to ensure the stability of the anti-shake.

[0034] The above is only the embodiment of the present application, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be pointed out that, for those skilled in the art, without departing from the technical scheme of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of the claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A displacement type optical image stabilization camera module, characterized by: The lens, the anti-shake unit and the motor assembly are included, the lens is installed on the motor assembly, the anti-shake unit includes a housing, a power part, a ball set, a support frame and a sensor part installed on the support frame, the motor assembly is fixed on the housing, the power part can drive the support frame to slide in the horizontal direction, the ball set includes a plurality of balls between the housing and the support frame, the opposite surfaces of the support frame and the housing are each provided with a plurality of ball grooves for limiting the balls, and the bottom of each ball groove is embedded with a hard pad.

2. The optical image stabilization camera module according to claim 1, wherein: The power part includes a magnet set and a coil set corresponding to the magnet set, the magnet set includes a plurality of magnets fixed on the side of the housing close to the balls, the coil set includes a same number of coils as the magnets, the support frame is provided with a plurality of winding columns, and the coils are all wound and fixed on the winding columns. 3.The optical image stabilization module according to claim 2, wherein: The spring part includes an inner plate, an outer plate and a plurality of spring wires, the sensor part is fixed on the inner plate, the outer periphery of the inner plate is connected with the support frame, the inner plate and the outer plate are connected through the plurality of spring wires, the spring wires are all elastic, and the outer plate is fixedly connected with the bottom plate.

4. The optical image stabilization camera module according to claim 3, characterized in that: The support frame is hollow and rectangular, and the four corners of the support frame are all provided with protrusions, and the ball grooves are all arranged on the protrusions.

5. The optical image stabilization camera module according to claim 4, characterized in that: The surface of the support frame away from the magnet set is provided with a same number of installation grooves as the magnets, and the installation grooves are all fixed with magnet attracting iron sheets opposite to the magnets.

6. The optical image stabilization camera module according to claim 5, wherein: The sensor part includes an image sensor, an infrared filter and a filter support, and the infrared filter is fixed on the filter support.

7. The optical image stabilization camera module according to claim 6, characterized in that: The material of the hard pad is ceramic or metal. 8.The optical image stabilization module according to claim 7, wherein: The support frame is further provided with a driving chip and a circuit part in electrical connection with the coils.

9. The optical image stabilization camera module according to claim 8, characterized in that: The bottom plate is further provided with a plurality of buckles on both sides, and the bottom plate is clamped with the housing through the buckles.

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