Camera assembly and user equipment
By placing the optical image stabilization motor on the light-collecting side of the lens assembly and designing a through-hole structure for the stabilization component, the electromagnetic interference problem of the optical image stabilization motor to the image sensor is solved, thus improving the imaging quality of the camera.
Patent Information
- Application Number
- CN201910189140.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2018-12-27
- Filing Date
- 2019-03-13
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2039-03-13
AI Technical Summary
When the optical image stabilization motor is working, the electrical signals it generates interfere with the image sensor, causing stripes to appear on the captured image and affecting the camera's shooting effect.
The optical image stabilization motor is placed on the light-collecting side of the lens assembly, away from the image sensor to reduce electromagnetic interference. The stationary and moving parts of the image stabilization are designed as plate-like structures with through holes to avoid blocking light. Support springs or tabs are used to facilitate movement and limit displacement.
It effectively reduces electromagnetic interference from the optical image stabilization motor to the image sensor, improves image quality, reduces stripe noise, and enhances shooting results.
Smart Images

Figure CN111385446B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electronics and communications, in particular to the technical field of optical imaging. BACKGROUND
[0002] In order to improve the picture quality when the camera of the mobile terminal is shooting, the optical image stabilization (OIS) technology can be used in the camera to compensate the movement of the camera itself.
[0003] The optical image stabilization assembly with the optical image stabilization motor in the mobile terminal (for example, a mobile phone) detects the shaking through the gyroscope inside the mobile terminal, and then moves the lens assembly in the opposite direction through the optical image stabilization motor to compensate the image blur phenomenon caused by the shaking of the mobile terminal during exposure. However, when the optical image stabilization motor is working, the electrical signals such as pulse width modulation (PWM) signals passing through the SMA wire will interfere with the image sensor, and the image sensor will have stripes on the picture taken, which affects the shooting effect of the camera. SUMMARY
[0004] The present application provides a camera assembly and a user equipment, and the image sensor is less interfered and the picture quality is better.
[0005] In a first aspect, an embodiment of a camera assembly is provided, comprising: an optical image stabilization motor, a housing, and a lens assembly, the optical image stabilization motor and the lens assembly are located inside the housing, one end of the housing is provided with an opening, the lens assembly collects light through the opening, the optical image stabilization motor is located inside the end of the housing provided with the opening, the optical image stabilization motor is used to drive the lens assembly to generate a compensation displacement, and the compensation displacement is used to compensate the displacement generated when the lens assembly shakes.
[0006] The scheme of the present application can greatly reduce the influence of the electromagnetic radiation of the optical image stabilization motor on the image sensor to generate imaging problems and improve the imaging quality.
[0007] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the camera assembly further comprises an image sensor, the image sensor is used to collect light passing through the lens assembly and form an image. The image sensor is located inside the housing and at an end opposite to the opening.
[0008] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the optical image stabilization motor can be any of various motors that can generate electromagnetic interference with the image sensor.
[0009] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the optical image stabilization motor includes an image stabilization non-moving part, an image stabilization moving part, and a drive wire connected between the image stabilization non-moving part and the image stabilization moving part, the image stabilization non-moving part is connected to the inside of the end of the housing where the opening is provided, the drive wire is used to drive the image stabilization moving part to generate a compensation displacement, and the image stabilization moving part is used to drive the lens assembly to generate the compensation displacement.
[0010] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the image stabilization non-moving part and the image stabilization moving part of the optical image stabilization motor can be provided in a plate-like structure with a through hole, and the image stabilization moving part and the image stabilization non-moving part are stacked together.
[0011] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the housing includes an end plate and a side plate connected to the edge of the end plate, and the opening is provided in the end plate.
[0012] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the image stabilization non-moving part of the optical image stabilization motor is fixedly connected to the inner side wall of the end of the housing where the opening is provided, or the image stabilization non-moving part of the optical image stabilization motor is movably connected to the inner side wall of the end of the housing where the opening is provided. The image stabilization moving part is located on the inside of the image stabilization non-moving part. The through hole of the image stabilization moving part and the through hole of the image stabilization non-moving part overlap together. The through hole of the image stabilization moving part and the through hole of the image stabilization non-moving part can also overlap together with the opening of the housing. In this way, neither the image stabilization moving part nor the image stabilization non-moving part will block the light entering the lens assembly, and the lens assembly can pass through the through hole of the image stabilization moving part and the through hole of the image stabilization non-moving part when moving. Of course, the lens assembly can also pass through the opening of the housing when moving.
[0013] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the drive wire can be connected to the opposite sides of the image stabilization non-moving part and the image stabilization moving part.
[0014] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), a support spring or spring sheet can be connected to the opposite side between the anti-shake fixed part and the anti-shake moving part.
[0015] The support spring or spring sheet connected between the anti-shake fixed part and the anti-shake moving part is used to facilitate the movement of the anti-shake moving part relative to the anti-shake fixed part and limit the distance of the movement of the anti-shake moving part relative to the anti-shake fixed part.
[0016] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the anti-shake fixed part of the optical anti-shake motor is fixedly connected to the inner side wall of the end of the housing provided with the opening. Specifically, the anti-shake fixed part of the optical anti-shake motor is fixedly connected to the inner side wall of the end plate, or the anti-shake fixed part of the optical anti-shake motor is fixedly connected to the inner side wall of the end of the side plate close to the end plate.
[0017] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the anti-shake fixed part of the optical anti-shake motor is movably connected to the inner side wall of the end of the housing provided with the opening. Specifically, the anti-shake fixed part of the optical anti-shake motor is movably connected to the inner side wall of the end plate, or the anti-shake fixed part of the optical anti-shake motor is movably connected to the inner side wall of the end of the side plate close to the end plate. For example, the anti-shake fixed part of the optical anti-shake motor is movably connected to the inner side wall of the end plate through a support spring or spring sheet, or the anti-shake fixed part of the optical anti-shake motor is movably connected to the inner side wall of the end of the side plate close to the end plate through a support spring or spring sheet.
[0018] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the housing further comprises a bottom plate, the bottom plate is connected to the edge of the side plate and located at the end opposite to the end plate.
[0019] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the camera assembly can further comprise a circuit board, and the image sensor can be arranged on the circuit board. The circuit board is located on the image side of the lens assembly, and the circuit board is located at the end of the housing opposite to the end plate.
[0020] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the circuit board can be disposed on the inner side of the bottom plate. The circuit board can also be disposed on the outer side of the bottom plate, and the bottom plate can be provided with an exit opening in front of the image sensor. Light from the outside can pass through the lens assembly and then pass through the exit opening to irradiate on the image sensor.
[0021] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the circuit board can be used as the bottom plate of the housing. In this way, the bottom plate does not need to be additionally provided. In this way, the structure of the camera assembly is more compact.
[0022] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), in an embodiment of the camera assembly, the lens assembly includes a lens seat and one or more optical lenses mounted in the lens seat.
[0023] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the camera assembly further includes a focus motor for driving the lens assembly to move to achieve focusing. The focus motor is located inside the housing and located between the bottom plate and the optical anti-shake motor or between the circuit board and the optical anti-shake motor. The electromagnetic interference of the focus motor on the image sensor is less than the electromagnetic interference of the optical anti-shake motor on the image sensor. The focus motor can be a voice coil motor (VCM) or a piezoelectric motor. The focus motor can drive the lens assembly to move along the direction of the optical axis or along the direction parallel to the optical axis, thereby achieving focusing.
[0024] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the side plate of the housing is located in the space around the focus motor. The focus motor is connected with the side plate or the bottom plate of the housing through a supporting spring or a supporting piece. The supporting spring or the supporting piece is used to support and limit the focus motor, so as to reduce unnecessary rotation or swing of the focus motor.
[0025] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), a first lead wire is connected between the driving wire of the optical image stabilization motor and the circuit board, and the first lead wire is a wire for transmitting signals between the optical image stabilization motor and the circuit board. The circuit board outputs an electrical signal (e.g., a PWM signal) to the driving wire through the first lead wire.
[0026] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the first lead wire is connected to the circuit board along the outside of the side plate of the housing. The first lead wire can be electrically connected to the circuit board by soldering, or the first lead wire can be electrically connected to the circuit board by a connector.
[0027] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the image sensor is provided with a plurality of pins electrically connected to the circuit board. The position at which the first lead wire is electrically connected to the circuit board is located away from the pins of the image sensor. This can reduce the electromagnetic interference of the electrical signal in the first lead wire on the image sensor,
[0028] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), a second lead wire is connected between the focus motor and the circuit board, and the second lead wire is a wire for transmitting signals between the focus motor and the circuit board. The second lead wire is connected to the circuit board from the outside of the side plate of the housing. The second lead wire can be electrically connected to the circuit board by soldering, or the second lead wire can be electrically connected to the circuit board by a connector.
[0029] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the position at which the second lead wire is electrically connected to the circuit board is located away from the pins of the image sensor. For example, the soldering position of the second lead wire to the circuit board is located near the side of the image sensor that does not have pins. This can reduce the electromagnetic interference of the electrical signal transmitted in the second lead wire on the image sensor.
[0030] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), at least a portion of the circuit board is located outside the side plate of the housing. The position where the first lead is connected to the circuit board is located outside the side plate of the housing. This can reduce the interference of the electrical signal in the first lead to the image sensor. The inner side wall of the side plate of the housing near the position of the first lead can be attached with a magnetic shielding material film for shielding the electromagnetic radiation of the electrical signal in the first lead.
[0031] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the position where the second lead is connected to the circuit board can also be located outside the side plate of the housing. The inner side wall of the side plate of the housing near the position of the second lead can be attached with a magnetic shielding material film for shielding the electromagnetic radiation of the electrical signal in the second lead.
[0032] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the second lead is connected to the driving component of the focus motor.
[0033] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the first lead can pass through a hole (which can be the opening or other holes besides the opening) or a gap provided in the side plate or the end plate of the housing to reach the outside of the housing, and then pass through the outside of the housing to reach the circuit board.
[0034] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the second lead passes through a hole (which can be the opening or other holes besides the opening) or a gap provided in the end plate or the side plate of the housing to reach the outside of the housing, and then passes through the outside of the housing to reach the circuit board.
[0035] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the focus motor comprises a focus stationary part and a focus movable part, and a driving component. The focus movable part of the focus motor is assembled with the lens assembly, or the focus movable part of the focus motor is integrally formed with the lens seat of the lens assembly. The focus stationary part of the focus motor is arranged outside the focus movable part. The OIS movable part of the OIS motor is movably connected with the focus movable part of the focus motor. The focus stationary part of the focus motor is fixedly connected with the OIS movable part of the OIS motor, or the focus stationary part of the focus motor is arranged to be integrally formed with the OIS movable part of the OIS motor. The OIS stationary part of the OIS motor is fixedly connected with the inner side wall of the end plate, or the OIS stationary part of the OIS motor is fixedly connected with the inner side wall of the side plate near the end plate.
[0036] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the driving component of the focus motor is arranged between the focus stationary part of the focus motor and the focus movable part, and the driving component is used to drive the focus movable part to move relative to the focus stationary part along the direction of the optical axis or along the direction parallel to the optical axis.
[0037] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the driving component comprises a magnet and a coil. The second lead wire connects the driving component with the circuit board, in particular, the second lead wire connects the coil with the circuit board.
[0038] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the focus stationary part is arranged with the magnet towards the side wall of the focus movable part, and the focus movable part is arranged with the coil towards the side wall of the focus stationary part.
[0039] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the focus movable part can be a cylindrical structure or a frame structure, and the cylindrical structure of the movable part is arranged outside the lens assembly.
[0040] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the focus stationary part can also be arranged as a cylindrical structure or a frame structure, and the cylindrical structure or the frame structure of the focus stationary part is arranged outside the focus movable part.
[0041] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the anti-shake moving part and the anti-shake non-moving part of the optical anti-shake motor are provided in a plate structure with a through hole, and in the stacked state, one end of the focusing non-moving part of the focusing motor facing the end plate of the housing is fixedly connected with the anti-shake moving part of the optical anti-shake motor. One end of the focusing moving part of the focusing motor facing the end plate of the housing is movably connected with the anti-shake moving part of the optical anti-shake motor.
[0042] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the support spring or spring sheet between the focusing motor and the housing can be connected between the focusing non-moving part of the focusing motor and the side plate or bottom plate of the housing.
[0043] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the focusing motor includes a first moving part, a second moving part, and a driving component. The second moving part of the focusing motor is arranged in a space around the lens assembly and assembled with the lens seat of the lens assembly, or the second moving part of the focusing motor is integrally formed with the lens seat of the lens assembly. The first moving part of the focusing motor is arranged outside the second moving part. The first moving part of the focusing motor is fixedly connected with the anti-shake non-moving part of the optical anti-shake motor, or the first moving part is integrally formed with the anti-shake non-moving part of the optical anti-shake motor. The anti-shake moving part of the optical anti-shake motor is fixedly connected with the second moving part of the focusing motor, or the anti-shake moving part of the optical anti-shake motor is integrally formed with the second moving part of the focusing motor. The anti-shake non-moving part of the optical anti-shake motor is movably connected with the inner side wall of the end plate of the housing, or the anti-shake non-moving part of the optical anti-shake motor is movably connected with the inner side wall of the end of the side plate of the housing close to the end plate.
[0044] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the driving component of the focusing motor is arranged between the side plate of the housing and the focusing motor, for driving the focusing motor and the lens assembly to move relative to the side plate along the direction of the optical axis or along the direction parallel to the optical axis, to achieve focusing. Correspondingly, the focusing motor is used to drive the anti-shake non-moving part and the anti-shake moving part of the anti-shake motor to move along the direction of the optical axis or along the direction parallel to the optical axis.
[0045] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the driving component includes a magnet and a coil.
[0046] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the second lead wire connects the coil to the circuit board.
[0047] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the first moving element is arranged opposite to the side plate of the housing, the side plate of the housing is arranged with the magnet towards the inner side of the first moving element, and the coil is mounted towards the side wall of the side plate.
[0048] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the second moving element of the focus motor can be a cylindrical structure or a frame structure, and the second moving element of the cylindrical structure or the frame structure is sleeved outside the lens assembly.
[0049] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the first moving element of the focus motor can also be arranged as a cylindrical structure or a frame structure, and the first moving element of the cylindrical structure or the frame structure is sleeved outside the second moving element.
[0050] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the anti-vibration moving element and the anti-vibration non-moving element of the optical anti-vibration motor are arranged as plate structures with through holes, and when stacked together, the anti-vibration non-moving element is movably connected to the inner side wall of the end plate of the housing, or the anti-vibration non-moving element is movably connected to the inner side wall of the side plate of the housing near one end of the end plate. The edge of the anti-vibration non-moving element stacked on the anti-vibration moving element can protrude beyond the edge of the anti-vibration moving element. The first moving element of the focus motor is fixedly connected to the edge portion of the anti-vibration non-moving element protruding beyond the anti-vibration moving element towards one end of the end plate of the housing. The second moving element of the focus motor is movably connected to the anti-vibration moving element towards one end of the end plate of the housing. The anti-vibration moving element is used to drive the second moving element of the focus motor to move to generate the compensation displacement, and accordingly, the second moving element of the focus motor is used to drive the lens assembly to move to generate the compensation displacement.
[0051] In one embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the support spring or spring sheet between the focus motor and the housing can be connected between the first moving element of the focus motor and the side plate or the bottom plate of the housing.
[0052] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the compensating displacement is a displacement compensating for a shaking of the lens assembly, the shaking of the lens assembly is generally a left-right shaking, and the compensating displacement is also in a plane substantially perpendicular to an optical axis of the lens assembly. The plane substantially perpendicular to the optical axis means a plane having an angle of 90 degrees or an acute angle less than 45 degrees or an obtuse angle greater than 135 degrees with the optical axis. The compensating displacement is generally a displacement in a direction substantially perpendicular to the optical axis of the lens assembly. The substantially perpendicular means that an angle between a straight line in which the direction of the displacement lies and a straight line in which the optical axis lies is an angle of 90 degrees or an acute angle less than 45 degrees or an obtuse angle greater than 135 degrees.
[0053] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the fixed connection means that two components are connected together and cannot have a relative displacement.
[0054] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the movable connection means that two components are connected together and can have a relative displacement within a certain range.
[0055] In a second aspect, the present application provides a user equipment, comprising a processor, a housing, and the camera assembly in various embodiments of the first aspect described above, the processor is located inside the housing, and the camera assembly is assembled on the inside of the housing. The processor is configured to send a control signal to the camera assembly.
[0056] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the camera assembly and the side wall of the housing can be fixedly connected or movably connected. In the case of fixed connection between the camera assembly and the side wall of the housing, a light hole is formed in front of the camera assembly, and the camera assembly collects light through the light hole. In the case of movable connection between the camera assembly and the side wall of the housing, the camera assembly is assembled on the inside of the housing through a telescopic mechanism, and when shooting is needed, the telescopic structure pushes the camera assembly out of the housing.
[0057] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the processor and the camera assembly can transmit control signals and data, the processor is configured to control the camera assembly to perform a shooting operation, and the picture taken by the camera assembly can be transmitted to the processor.
[0058] In an embodiment of the camera assembly (which can be combined with any one or more of the above embodiments of the camera assembly), the circuit board on which the image sensor of the camera assembly is located and the circuit board on which the processor is located can be different circuit boards, for example, the processor can be located on a main circuit board, and the circuit board on which the image sensor of the camera assembly is located is electrically connected to the main circuit board by wires. BRIEF DESCRIPTION OF DRAWINGS
[0059] Figure 1 is a structural schematic diagram of an embodiment of a camera assembly provided by the present application;
[0060] Figure 2 is an exploded schematic diagram of the components of the camera assembly shown in Figure 1
[0061] Figure 3 is a structural schematic diagram of another embodiment of a camera assembly provided by the present application;
[0062] Figure 4 is an exploded schematic diagram of the components of the camera assembly shown in Figure 3
[0063] Figure 5 is a schematic diagram of the distance between the optical image stabilization motor and the image sensor, and the distance between the first lead wire and the image sensor, in an embodiment of the camera assembly of the present application;
[0064] Figure 6 is a schematic diagram of the relative positions between the first lead or the second lead and the image sensor in an embodiment of the camera assembly provided by the present application;
[0065] Figure 7 is a structural schematic diagram of an embodiment of a user equipment provided by the present application; and
[0066] Figure 8 is a schematic diagram of the components included in an embodiment of the user equipment provided by the present application.
[0067] The reference numerals of the elements in the figures are as follows:
[0068] Optical image stabilization motor 1, stabilization immovable part 11, stabilization movable part 12, drive wire 13, first lead wire 14, housing 2, opening 20, end plate 21, side plate 22, bottom plate 23, lens assembly 3, lens seat 31, optical lens 32, image sensor 4, lead 41, circuit board 5, focusing motor 6, focusing immovable part 61, focusing movable part 62, drive component 60, first movable part 63, second movable part 64, second lead wire 65, magnet 66, coil 67, spring 7. DETAILED DESCRIPTION
[0069] In this application, the camera assembly is mainly arranged in the user equipment to enable the user equipment to have the functions of taking pictures and shooting videos. In order to collect the scene pictures of the outside world, the camera assembly usually includes a lens assembly, an auto-focus motor, an optical anti-shake motor, etc. An image sensor is arranged at a position opposite to the tail end of the lens assembly.
[0070] Image sensor: the image sensor is a device for converting optical signals into electronic signals. The light passing through the lens assembly is irradiated on the photosensitive surface of the image sensor, and the photosensitive elements on the photosensitive surface collect and record the information such as the light intensity of the light, thereby forming an image. The image sensor can also be referred to as an image sensor, a photosensitive chip, or a photosensitive element.
[0071] Lens assembly: the image sensor is located on the imaging side of the lens assembly, and the light from the outside world can be focused on the photosensitive surface of the image sensor through the lens assembly and form a clear image. Specifically, the photosensitive surface of the image sensor can be perpendicular to the optical axis of the lens assembly. The role of the lens assembly is to change the light path of the light from the outside world by using the refraction of the lens, so as to focus the scene picture of the outside world on the image sensor. Among them, the lens assembly usually includes one or more transparent optical lenses (i.e. lenses), which are arranged at different positions along the axial direction of the lens assembly (i.e. the direction of the optical axis of the lens assembly). When the outside light irradiated into the lens assembly advances along the optical axis of the lens assembly, it will be refracted when passing through different optical lenses, and finally focused on the photosensitive surface of the image sensor, so that the image sensor forms a clear image.
[0072] Focus motor (for example: auto focus (AF) motor): when the lens assembly realizes imaging, because the distance between the outside object and the lens assembly is different, when shooting different distances of outside objects, it is usually necessary to adjust the distance (i.e. image distance) between the optical lenses of the lens assembly and the image sensor, so as to ensure that the picture can be normally focused on the image sensor. The auto-focus motor can drive part or all of the lenses in the lens assembly to move back and forth along the optical axis direction of the lens assembly, so as to ensure that the light of the outside object can be focused on the image sensor after passing through the lens assembly, thereby forming a clear image. The auto-focus motor can be in the form of a ring or a frame structure and is arranged around the outer side of the lens assembly in the circumferential direction. In this way, the auto-focus motor will not affect the light transmission of the lens assembly when driving the lenses in the lens assembly to move.
[0073] Optical Image Stabilization (OIS) motor: when handheld shooting is adopted, the camera assembly can shake due to unstable hand holding, and the lens assembly inside the camera assembly will also shake, so that the imaging picture of the lens assembly is shaken. The optical image stabilization motor is directly or indirectly connected with the lens assembly, and compensates for the shaking of the camera assembly by controlling the reverse movement of the lens assembly. Specifically, the vibration of the hand can be detected by a sensor such as a gyroscope sensor, and converted into an electrical signal. After processing, the optical image stabilization motor moves parallel to the light-sensing surface of the image sensor to offset the imaging deviation and shaking phenomenon caused by hand shaking. Generally, the optical image stabilization motor can also be sleeved on the circumferential outer side of the lens assembly, so as to avoid affecting the normal light transmission of the lens assembly.
[0074] Drive wire: in the case of an SMA (Shape Memory Alloy) motor of the optical image stabilization motor, the drive wire of the SMA motor can be made of shape memory alloy (SMA) material, and can also be called SMA wire. When an electrical signal is input to the drive wire, the temperature changes compared to the state when no electrical signal is input, and the length of the drive wire also changes accordingly. When the length of the drive wire changes, the moving part of the optical image stabilization motor can be driven to produce displacement relative to the fixed part. For example: the length of some drive wires when energized is shorter than the length when not energized, that is, the drive wire is in a contracted state when energized. The electrical signal input to the drive wire can be a PWM (Pulse Width Modulation) signal. The PWM signal is a high-frequency pulse signal, which will generate a large amount of electromagnetic wave radiation, and the electromagnetic wave radiation has a strong interference on the circuit in the image sensor 4.
[0075] The above is an explanation of various components involved in each embodiment of the camera assembly in the present application, so as to facilitate understanding by those skilled in the art. It should be noted that the components listed above are not necessarily included in the camera assembly in the present application.
[0076] The camera assembly provided by the present application sets the optical image stabilization motor on the light side of the lens assembly, thereby moving away from the image sensor, so that the optical image stabilization motor and the image sensor have a relatively far physical distance. Thus, the electromagnetic interference of the optical image stabilization motor on the image sensor is reduced. And this way is simple and easy to implement, the material cost is low, and the assembly process is simple and easy to mass produce.
[0077] The design scheme of the camera assembly in the present application can be applied in a user device with two or more camera assemblies to improve the user's shooting experience. In addition, the design scheme of the camera assembly in the present application can be applied in a periscopic camera module, and the optical anti-shake motor in the periscopic camera module generally adopts an SMA motor.
[0078] The various embodiments of the camera assembly provided in the present application are described below.
[0079] As shown in Figures 1 to 4 , the camera assembly provided in the present application includes an optical anti-shake motor 1, a housing 2, and a lens assembly 3, the optical anti-shake motor 1 and the lens assembly 3 are located inside the housing 2, one end of the housing 2 is provided with an opening 20, the lens assembly 3 collects light through the opening 20, the optical anti-shake motor 1 is located inside the end of the housing 2 provided with the opening 20, the optical anti-shake motor 1 is used to drive the lens assembly 3 to produce a compensation displacement, and the compensation displacement is used to compensate for the displacement generated when the lens assembly 3 shakes.
[0080] In a specific embodiment, the camera assembly further includes an image sensor 4, which is used to collect light passing through the lens assembly 3 and form an image. The image sensor 4 is located inside the housing 2 and at an end opposite to the opening 20.
[0081] In a specific embodiment, the optical anti-shake motor 1 can be various motors that will generate electromagnetic interference to the image sensor 4, for example, the optical anti-shake motor can be an SMA motor or a piezoelectric motor. In the case where the optical anti-shake motor adopts an SMA motor, the scheme of the present application can greatly reduce the stripe noise generated by the influence of the PWM signal of the SMA motor on the image sensor, and improve the imaging quality.
[0082] As shown in Figure 1 and Figure 3 , the optical anti-shake motor 1 includes an anti-shake fixed part 11, an anti-shake moving part 12, and a driving wire 13 connected between the anti-shake fixed part 11 and the anti-shake moving part 12, the anti-shake fixed part 11 is connected to the inside of the end of the housing 2 provided with the opening 20, the driving wire 13 is used to drive the anti-shake moving part 12 to produce a compensation displacement, and the anti-shake moving part 12 is used to drive the lens assembly 3 to produce the compensation displacement.
[0083] As shown in Figures 1 to 4 , the anti-shake fixed part 11 and the anti-shake moving part 12 of the optical anti-shake motor 1 can be provided in a plate structure with a through hole, and the anti-shake moving part 11 and the anti-shake fixed part 12 are stacked together.
[0084] AsFigure 1 or Figure 3 As shown, the housing 2 includes an end plate 21 and a side plate 22 connected to the edge of the end plate 21, and the opening 20 is formed in the end plate 21.
[0085] like Figures 1 to 4 As shown, the fixed stabilizing component 11 of the optical image stabilization motor 1 is fixedly connected to the inner sidewall of the housing 2 at the end where the opening 20 is provided, or the fixed stabilizing component 11 of the optical image stabilization motor 1 is movably connected to the inner sidewall of the housing 2 at the end where the opening 20 is provided. The stabilizing component 12 is located inside the fixed stabilizing component 11. The through holes of the stabilizing component 12 and the fixed stabilizing component 11 overlap. The through holes of the stabilizing component 12 and the fixed stabilizing component 11 can also overlap with the opening 20 of the housing 2. In this way, neither the stabilizing component 12 nor the fixed stabilizing component 11 will block the light entering the lens assembly 3, and the lens assembly 3 can pass through the through holes of the stabilizing component 12 and the fixed stabilizing component 11 when moving. Of course, the lens assembly 3 can also pass through the opening 20 of the housing 2 when moving.
[0086] like Figure 1 or Figure 3 As shown, the drive wire 13 can be connected to the opposite side of the stationary image stabilizer 11 and the moving image stabilizer 12. A support spring or tab can also be connected to the opposite side of the stationary image stabilizer 11 and the moving image stabilizer 12. The support spring or tab connected between the stationary image stabilizer 11 and the moving image stabilizer 12 facilitates the movement of the moving image stabilizer 12 relative to the stationary image stabilizer 11 and limits the distance the moving image stabilizer 12 relative to the stationary image stabilizer 11 can travel. Of course, the support spring or tab can also be located in other positions, as long as it serves to support the image stabilizer 12 and the lens module 3.
[0087] In one embodiment of the optical image stabilization motor 1, the immovable stabilization component 11 of the optical image stabilization motor 1 is fixedly connected to the inner sidewall of the housing 2 at the end where the opening 20 is located. Specifically, the immovable stabilization component 11 of the optical image stabilization motor 1 is fixedly connected to the inner sidewall of the end plate 21, or the immovable stabilization component 11 of the optical image stabilization motor 1 is fixedly connected to the inner sidewall of the side plate 22 near the end plate 21.
[0088] like Figure 1 or Figure 3As shown, in another embodiment of the optical image stabilization motor 1, the fixed stabilization component 11 of the optical image stabilization motor 1 is movably connected to the inner wall of the housing 2 at the end where the opening 20 is provided. Specifically, the fixed stabilization component 11 of the optical image stabilization motor 1 is movably connected to the inner wall of the end plate 21, or the fixed stabilization component 11 of the optical image stabilization motor 1 is movably connected to the inner wall of the side plate 22 near the end plate 21. For example, the fixed stabilization component 11 of the optical image stabilization motor 1 is movably connected to the inner wall of the end plate 21 via a support spring or spring sheet 7, or the fixed stabilization component 11 of the optical image stabilization motor 1 is movably connected to the inner wall of the side plate 22 near the end plate 21 via a support spring or spring sheet.
[0089] In one embodiment of the camera assembly, the housing 2 further includes a base plate 23, which is connected to the edge of the side plate 22 and is located at the end opposite to the end plate 21.
[0090] like Figure 1 or Figure 3 As shown, in one embodiment of the camera assembly, the camera assembly may further include a circuit board 5, on which the image sensor 4 may be disposed. The circuit board 5 is located on the image side of the lens assembly 3, and at the end of the housing 2 opposite to the end plate 21. The circuit board 5 may be disposed on the inner side of the base plate 23. Alternatively, the circuit board 5 may be located on the outer side of the base plate 23, which has an outlet in front of the image sensor 4. Light from the outside passes through the lens assembly 3, through the outlet, and illuminates the image sensor 4.
[0091] For simplicity, the circuit board 5 can serve as the base plate 23 of the housing 2. This eliminates the need for a separate base plate.
[0092] like Figure 1 or Figure 3 As shown, in one embodiment of the camera assembly, the lens assembly 3 includes a lens mount 31 and one or more optical lenses 32 installed inside the lens mount 31.
[0093] like Figure 1 or Figure 3As shown in FIG. 1, in an embodiment of the camera module, the camera module further comprises a focus motor 6 for driving the lens assembly 3 to move to achieve focus. The focus motor 6 is located inside the housing 2 and between the bottom plate 23 (or the circuit board 5) and the optical image stabilization motor 1. The electromagnetic interference of the focus motor 6 on the image sensor 4 is less than that of the optical image stabilization motor 1. The focus motor 6 can be a voice coil motor (VCM) or a piezoelectric motor. The focus motor 6 can drive the lens assembly 3 to move along the direction of the optical axis or along the direction parallel to the optical axis, thereby achieving focus.
[0094] As shown in FIG. 1, the distance between the optical image stabilization motor 1 and the circuit board 5 is L1. Figure 5
[0095] The side plate 22 of the housing 2 is located in the space around the focus motor 6. A support spring or a spring piece is connected between the focus motor 6 and the side plate 22 or the bottom plate 23 of the housing 2, which is used to support and limit the focus motor 6 to reduce unnecessary rotation or swing of the focus motor 6.
[0096] As shown in FIG. 1, in an embodiment of the camera module, the driving wire 13 of the optical image stabilization motor 1 is connected with the circuit board 5 through a first lead wire 14, which is a wire for transmitting signals between the optical image stabilization motor 1 and the circuit board 5. The circuit board 5 outputs electrical signals (such as PWM signals) to the driving wire 13 through the first lead wire 14. Figure 1 Figure 3 As shown in FIG. 1, in an embodiment of the camera module, the driving wire 13 of the optical image stabilization motor 1 is connected with the circuit board 5 through a first lead wire 14, which is a wire for transmitting signals between the optical image stabilization motor 1 and the circuit board 5. The circuit board 5 outputs electrical signals (such as PWM signals) to the driving wire 13 through the first lead wire 14.
[0097] The first lead wire 14 is connected to the circuit board 5 along the outside of the side plate 22 of the housing 2. The first lead wire 14 can be electrically connected to the circuit board 5 by welding, or the first lead wire 14 can be electrically connected to the circuit board 5 through a connector.
[0098] As shown in FIG. 1, in an embodiment of the camera module, the driving wire 13 of the optical image stabilization motor 1 is connected with the circuit board 5 through a first lead wire 14, which is a wire for transmitting signals between the optical image stabilization motor 1 and the circuit board 5. The circuit board 5 outputs electrical signals (such as PWM signals) to the driving wire 13 through the first lead wire 14. Figure 6 As shown in the embodiment of the camera assembly, the image sensor 4 is provided with a plurality of pins electrically connected with the circuit board 5. In order to reduce the electromagnetic interference of the electrical signal in the first lead 14 to the image sensor 4, the position where the first lead 14 is electrically connected with the circuit board 5 is located away from the pins of the image sensor 4. For example, for a rectangular image sensor 4, the pins 41 are located at one or two or three sides of the image sensor 4. The image sensor 4 has at least one side without pins. The position where the first lead 14 is connected with the circuit board 5 is located close to the side of the image sensor 4 without pins 41. For example, one or two shorter sides of the rectangular image sensor 4 are provided with pins 41, and the position where the first lead 14 is connected with the circuit board 5 is located close to one longer side of the image sensor 4.
[0099] The first lead 14 is electrically connected with the circuit board, but the first lead 14 does not need to be electrically connected with the image sensor 4. The farther the first lead 14 is away from the image sensor 4, the better. Similarly, the farther the first lead 14 is away from the pins 41 of the image sensor 4, the better.
[0100] As shown in the embodiment of the camera assembly, the image sensor 4 is provided with a plurality of pins electrically connected with the circuit board 5. In order to reduce the electromagnetic interference of the electrical signal in the first lead 14 to the image sensor 4, the position where the first lead 14 is electrically connected with the circuit board 5 is located away from the pins of the image sensor 4. For example, for a rectangular image sensor 4, the pins 41 are located at one or two or three sides of the image sensor 4. The image sensor 4 has at least one side without pins. The position where the first lead 14 is connected with the circuit board 5 is located close to the side of the image sensor 4 without pins 41. For example, one or two shorter sides of the rectangular image sensor 4 are provided with pins 41, and the position where the first lead 14 is connected with the circuit board 5 is located close to one longer side of the image sensor 4. Figure 1 or Figure 3 As shown, the focusing motor 6 is connected with the circuit board 5 through a second lead 65, and the second lead 65 is a wire for transmitting signals between the focusing motor 6 and the circuit board 5. The second lead 65 is connected to the circuit board 5 from the outside of the side plate 22 of the shell 2. The second lead 65 is electrically connected with the circuit board 5 by welding, or the second lead 65 is electrically connected with the circuit board 5 through a connector.
[0101] In order to reduce the electromagnetic interference of the electrical signal transmitted in the second lead 65 to the image sensor 4, similar to the first lead 14, the position where the second lead 65 is electrically connected with the circuit board 5 is located away from the pins 41 of the image sensor 4. For example, the welding position of the second lead 65 with the circuit board 5 is located close to the side of the image sensor 4 without pins 41.
[0102] The second lead 65 does not need to be electrically connected to the image sensor 4. The second lead 65 is electrically connected to the circuit board 5. The farther the second lead 65 is from the image sensor 4, the better; similarly, the farther the second lead 65 is from the pin 41 of the image sensor 4, the better. By limiting the connection positions of the first lead 14 and the second lead 65 to the circuit board 5 to locations far from the pin 41 of the image sensor 4, interference from the electrical signals in the first lead 14 and the second lead 65 to the image sensor 4 can be reduced, thereby reducing stripe noise in the image formed by the image sensor 4.
[0103] like Figure 5 As shown, the distance between the first lead 14 (or the second lead 65) and the circuit board 5 is L2.
[0104] When the circuit board 5 is located outside the base plate 23, or when the base plate 23 serves as the base plate 23 of the housing 2 (see [reference]). Figure 1 or Figure 3 At least a portion of the circuit board 5 is located on the outer side of the side plate 22. The first lead 14 is connected to the circuit board 5 at the outer side of the side plate 22 of the housing 2. This reduces the interference of the electrical signal in the first lead 14 to the image sensor 4. A magnetic shielding material film can be attached to the inner wall of the side plate 22 of the housing 2 near the first lead 14. The magnetic shielding material film is used to shield the electromagnetic radiation of the electrical signal in the first lead 14.
[0105] Similarly, the connection point between the second lead 65 and the circuit board 5 can also be located on the outer side of the side plate 22 of the housing 2. A magnetic shielding material film can be attached to the inner wall of the side plate 22 of the housing 2 near the second lead 65. The magnetic shielding material film is used to shield the electromagnetic radiation of the electrical signal in the second lead 65.
[0106] In one specific embodiment, such as Figure 1 or Figure 3As shown, the second lead wire 65 is connected to the anti-shake fixed part 11 of the optical anti-shake motor 1 from the driving part 60 of the focus motor 6. The first lead wire 14 can pass through a hole (which can be the opening 20 or other hole except the opening 20) or gap provided on the side plate 22 or end plate 21 of the housing 2 to reach the outside of the housing 2 and then pass through the outside of the housing 2 to reach the circuit board 5. The second lead wire 65 is similar to the first lead wire 14, which passes through a hole (which can be the opening 20 or other hole except the opening 20) or gap provided on the side plate 22 or end plate 21 of the housing 2 to reach the outside of the housing 2 and then pass through the outside of the housing 2 to reach the circuit board 5.
[0107] For example, the first lead wire 14 can pass through one side of the supporting spring or elastic sheet between the anti-shake fixed part 11 and the anti-shake movable part 12 of the optical anti-shake motor 1. The second lead wire 65 can also pass through one side of the supporting spring or elastic sheet between the anti-shake fixed part 11 and the anti-shake movable part 12 of the optical anti-shake motor 1. The first lead wire 14 can be a flexible PCB, and the second lead wire 65 can also be a flexible PCB.
[0108] Figure 1 And Figure 3 In order to distinguish the first lead wire 14 and the second lead wire 65, the first lead wire 14 and the second lead wire 65 are arranged on the two sides of the housing 2 respectively. In fact, the first lead wire 14 and the second lead wire 65 can be located on one side of the housing 2, or even integrated together.
[0109] The focus motor 6 has the following two embodiments:
[0110] The first one is as shown in Figure 1 and Figure 2 The focus motor 6 includes a focus fixed part 61, a focus movable part 62, and a driving part 60. The anti-shake fixed part 11 of the optical anti-shake motor 1 is fixedly connected to the inner side wall of the end plate 21, or the anti-shake fixed part 11 of the optical anti-shake motor 1 is fixedly connected to the inner side wall of the end plate 21 close to one end of the side plate 22. The focus fixed part 61 of the focus motor 6 is fixedly connected to the anti-shake movable part 12 of the optical anti-shake motor 1, or the focus fixed part 61 of the focus motor 6 is integrally formed with the anti-shake movable part 12 of the optical anti-shake motor 1. The focus movable part 62 of the focus motor 6 is assembled with the lens assembly 3, or the focus movable part 62 of the focus motor 6 is integrally formed with the lens seat 31 of the lens assembly 3. The focus fixed part 61 of the focus motor is arranged on the outside of the focus movable part 62. The anti-shake movable part 12 of the optical anti-shake motor 1 is movably connected to the focus movable part 62 of the focus motor 6.
[0111] When the driving wire 13 of the optical image stabilization motor 1 drives the stabilization moving part 12 of the optical image stabilization motor 1 to move, the stabilization moving part 12 drives the focusing moving part 62 and the focusing stationary part 61 of the focusing motor 6 to move, and the focusing moving part 62 drives the lens assembly 3 to move to generate the compensation displacement.
[0112] In a specific embodiment, the driving part 60 of the focusing motor 6 is arranged between the focusing stationary part 61 and the focusing moving part 62 of the focusing motor 6, and the driving part 60 is used to drive the focusing moving part 62 to move along the direction of the optical axis or the direction parallel to the optical axis relative to the focusing stationary part 61.
[0113] In a specific embodiment, the driving part 60 includes a magnet 66 and a coil 67. The second lead wire 65 connects the driving part 60 with the circuit board 5, and in particular, the second lead wire 65 connects the coil 67 with the circuit board 5.
[0114] In a specific embodiment, the focusing moving part 62 of the focusing motor 6 is arranged in the space around the lens assembly 3 and assembled with the lens assembly 3, the focusing stationary part 61 is arranged outside the focusing moving part 62 and arranged opposite to the side wall of the focusing moving part 62, the magnet 66 is arranged on the side wall of the focusing moving part 62 facing the focusing stationary part 61, and the coil 67 is arranged on the side wall of the focusing stationary part 61 facing the focusing moving part 62. When the coil 67 is energized, the magnet 66 and the coil 67 interact to generate a clockwise or counterclockwise torque to push the focusing moving part 62 and the lens assembly 3 to rotate around the optical axis of the lens assembly 3. The side wall of the focusing moving part 62 and the inner wall of the focusing stationary part 61 can be connected in a threaded manner, so that the lens assembly 3 rotates around the optical axis while moving along the direction of the optical axis or the direction parallel to the optical axis, thereby achieving focusing.
[0115] In a specific embodiment, as shown in Figure 2 The focusing moving part 62 can be a cylindrical structure or a frame structure, and the cylindrical structure of the focusing moving part 62 is arranged outside the lens assembly 3.
[0116] The focusing stationary part 61 can also be arranged as a cylindrical structure or a frame structure, and the focusing stationary part 61 of the cylindrical structure or the frame structure is arranged outside the focusing moving part 62.
[0117] In a specific embodiment, as shown in Figure 1 and Figure 2As shown, in the case that the anti-shake moving part 12 and the anti-shake non-moving part 11 of the optical anti-shake motor are provided in a plate structure with a through hole, one end of the focusing non-moving part 61 of the focusing motor towards the end plate 21 of the shell 2 is fixedly connected with the anti-shake moving part 12 of the optical anti-shake motor. One end of the focusing moving part 62 of the focusing motor towards the end plate 21 of the shell 2 is movably connected with the anti-shake moving part 12 of the optical anti-shake motor 1. In this way, the anti-shake moving part 12 of the optical anti-shake motor 1 can drive the focusing moving part 62 and the focusing non-moving part 61 of the focusing motor 6 to move, and because the focusing moving part 62 of the focusing motor 6 is movably connected with the anti-shake moving part 12 of the optical anti-shake motor 1, the focusing moving part 62 of the focusing motor 6 can move relative to the focusing non-moving part 61 of the focusing motor and the anti-shake moving part 12 of the optical anti-shake motor 1 to push the lens assembly 3 to focus.
[0118] The movable connection between the anti-shake moving part 12 and the focusing moving part 62 can be achieved by connecting a spring or a spring piece between the anti-shake moving part 12 and the focusing moving part 62. In this way, the focusing moving part 62 can move relative to the anti-shake moving part 12, and the spring or the spring piece limits the distance of the movement of the focusing moving part 62 relative to the anti-shake moving part 12.
[0119] The drive wire 13 of the optical anti-shake motor 1 is connected between the anti-shake non-moving part 11 and the anti-shake moving part 12 which are stacked, and when the drive wire 13 is stretched or contracted, it drives the anti-shake moving part 12 to move in a direction which is substantially perpendicular to the optical axis of the lens assembly 3, the anti-shake moving part 12 drives the focusing moving part 62 and the focusing non-moving part 61 to move in a direction which is substantially perpendicular to the optical axis of the lens assembly 3, and the focusing moving part 62 drives the lens assembly 3 to move in a direction which is substantially perpendicular to the optical axis of the lens assembly 3 to compensate for the displacement of the camera assembly when it is shaken.
[0120] The supporting spring or spring piece between the focusing motor 6 and the shell 2 can be connected between the focusing non-moving part 61 of the focusing motor 6 and the side plate 22 or the bottom plate 23 of the shell 2. In addition, a supporting spring or spring piece can also be connected between the focusing non-moving part 61 and the focusing moving part 62. The supporting spring or spring piece between the focusing non-moving part 61 and the focusing moving part 62 is used to limit the distance of the relative movement between the focusing non-moving part 61 and the focusing moving part 62.
[0121] Secondly, as shown in FIG. 2, the anti-shake moving part 12 of the optical anti-shake motor 1 is connected with the focusing non-moving part 61 of the focusing motor 6, and the focusing moving part 62 of the focusing motor 6 is movably connected with the anti-shake moving part 12 of the optical anti-shake motor 1. Figure 3 and Figure 4As shown, the focusing motor 6 comprises a first moving part 63, a second moving part 64 and a driving component 60. The anti-shake fixed part 11 of the optical anti-shake motor 1 is movably connected to the inner side wall of the end plate 21 of the shell 2, or the anti-shake fixed part 11 of the optical anti-shake motor 1 is movably connected to the inner side wall of the side plate 22 of the shell 2 near the end of the end plate 21.
[0122] The anti-shake fixed part 11 of the optical anti-shake motor 1 and the shell 2 can be movably connected by setting a spring or a spring sheet 7. The support spring or spring sheet 7 between the anti-shake fixed part 11 of the optical anti-shake motor 1 and the shell 2 is used to limit the moving distance of the anti-shake fixed part 11 of the optical anti-shake motor 1 when the anti-shake fixed part 11 of the optical anti-shake motor 1 moves relative to the shell 2.
[0123] The first moving part 63 of the focusing motor 6 is fixedly connected to the anti-shake fixed part 11 of the optical anti-shake motor 1, or the first moving part 63 is integrally formed with the anti-shake fixed part 11 of the optical anti-shake motor 1. The second moving part 64 of the focusing motor 6 is arranged in the space around the lens assembly 3 and assembled with the lens seat 31 of the lens assembly 3, or the second moving part 64 of the focusing motor 6 is integrally formed with the lens seat 31 of the lens assembly 3. The first moving part 63 of the focusing motor 6 is arranged outside the second moving part 64. The anti-shake moving part 12 of the optical anti-shake motor 1 is fixedly connected to the second moving part 64 of the focusing motor 6, or the anti-shake moving part 12 of the optical anti-shake motor 1 is integrally formed with the second moving part 64 of the focusing motor 6.
[0124] When the driving wire 13 of the optical anti-shake motor 1 drives the anti-shake moving part 12 to move, the anti-shake moving part 12 drives the second moving part 64 of the focusing motor 6 to move, and the second moving part 64 of the focusing motor 6 drives the lens assembly 3 to move, so that the lens assembly 3 generates the compensation displacement.
[0125] The driving component 60 of the focusing motor 6 is arranged between the side plate 22 of the shell 2 and the focusing motor 6, and is used to drive the focusing motor 6 and the lens assembly 3 to move relative to the side plate 22 along the direction in which the optical axis is located or along the direction parallel to the optical axis, so as to realize focusing. Correspondingly, the anti-shake fixed part 11 and the anti-shake moving part 12 of the anti-shake motor 1 will also move along the direction in which the optical axis is located or along the direction parallel to the optical axis.
[0126] In a specific embodiment, the driving component 60 comprises a magnet 66 and a coil 67. The second lead 65 connects the driving component 60 and the circuit board 5, in particular, the second lead 65 connects the coil 67 and the circuit board 5.
[0127] The first moving part 63 is arranged opposite to the side plate 22 of the housing 2, the side plate 22 of the housing 2 is arranged with the magnet 66 towards the inner side of the first moving part 63, the first moving part 63 is arranged with the coil 67 towards the side wall of the side plate 22, the coil 67 interacts with the magnet 66 to generate clockwise or counterclockwise torque to push the first moving part 63, the second moving part 64, the anti-shake moving part 12, the anti-shake non-moving part 11, and the lens assembly 3 to rotate around the optical axis of the lens assembly 3. The outer side wall of the first moving part 63 of the focusing motor 6 and the inner side wall of the side plate 22 of the housing 2 can be connected in a threaded manner, so that the lens assembly 3 rotates around the optical axis while moving along the direction of the optical axis or moving along the direction parallel to the optical axis, thereby achieving focusing. Because the anti-shake non-moving part 11 is movably connected with the end plate 21 of the housing 2 (for example, through a supporting spring or a supporting sheet), the first moving part 63, the second moving part 64, the anti-shake non-moving part 11, and the anti-shake moving part 12 can move relative to the housing 2 to push the lens assembly 3 to focus.
[0128] In a specific embodiment, as shown in Figure 4 The second moving part 64 of the focusing motor 6 can be a cylindrical structure or a frame structure, and the second moving part 64 of the cylindrical structure or the frame structure is arranged outside the lens assembly 3.
[0129] The first moving part 63 of the focusing motor 6 can also be a cylindrical structure or a frame structure, and the first moving part 63 of the cylindrical structure or the frame structure is arranged outside the second moving part 64.
[0130] In a specific embodiment, as shown in Figure 3 and Figure 4As shown, in the case that the anti-shake member 12 and the anti-shake fixed member 11 of the optical anti-shake motor 1 are provided in a plate structure with a through hole, the anti-shake fixed member 11 is movably connected to the inner side wall of the end plate 21 of the housing 2, or the anti-shake fixed member 11 is movably connected to the inner side wall of the side plate 22 of the housing 2 near the end of the end plate 21. The edge of the anti-shake fixed member 11 stacked on the anti-shake member 12 can protrude beyond the edge of the anti-shake member 12. The end of the first moving member 63 of the focusing motor 6 facing the end plate 21 of the housing 2 is fixedly connected to the edge of the anti-shake fixed member 11 protruding beyond the anti-shake member 12. The end of the second moving member 64 of the focusing motor 6 facing the end plate 21 of the housing 2 is movably connected to the anti-shake member 12. The anti-shake member 12 drives the second moving member 64 of the focusing motor 6 to move to generate the compensation displacement, and accordingly the second moving member 64 of the focusing motor 6 drives the lens assembly 3 to move to generate the compensation displacement.
[0131] The supporting spring or spring sheet between the focusing motor 6 and the housing 2 can be connected between the first moving member 63 of the focusing motor 6 and the side plate 22 or the bottom plate 23 of the housing 2. In addition, a supporting spring or spring sheet can also be connected between the first moving member 63 and the second moving member 64 of the focusing motor 6. The supporting spring or spring sheet between the first moving member 63 and the second moving member 64 is used to limit the relative movement between the first moving member 63 and the second moving member 64.
[0132] In the above two embodiments of the focusing motor 6, the inner wall of the cylindrical structure can have a circular or rectangular or other regular shape in cross section; the outer wall of the cylindrical structure can have a circular or rectangular or other regular shape in cross section. The inner wall of the frame structure can have a circular or rectangular or other regular shape in cross section; the outer wall of the frame structure can have a circular or rectangular or other regular shape in cross section.
[0133] In the above various embodiments, the compensation displacement is to compensate for the displacement of the lens assembly when the lens assembly is shaken, and the shaking of the lens assembly is generally left-right shaking, and the compensation displacement is also in a plane substantially perpendicular to the optical axis of the lens assembly. The plane substantially perpendicular to the optical axis means that the included angle between the plane and the optical axis is a right angle or an acute angle less than 45 degrees or an obtuse angle greater than 135 degrees. The compensation displacement is generally in a direction substantially perpendicular to the optical axis of the lens assembly. The substantially perpendicular means that the included angle between the straight line in the direction of the displacement and the straight line of the optical axis is a right angle or an acute angle less than 45 degrees or an obtuse angle greater than 135 degrees.
[0134] The fixed connection in each of the above embodiments refers to that two components are connected together without relative displacement. The movable connection refers to that two components are connected together and can have relative displacement within a certain range, for example, one component is provided with a guide rail, and the other component is provided with a sliding groove, the two components are connected through the guide rail and the sliding groove, and the component provided with the sliding groove can slide along the guide rail.
[0135] Referring to Figure 7 As shown in the drawings, the application also provides an embodiment of a user equipment 100. The user equipment 100 comprises a processor, a housing 102, and the camera assembly 101 in the foregoing embodiment, the processor is located inside the housing 102, and the camera assembly is assembled inside the housing 102. The processor is used to send a control signal to the camera assembly. The camera assembly 101 and the side wall of the housing 102 can be fixedly connected or movably connected. In the case of fixed connection between the camera assembly 101 and the side wall of the housing 102, the housing 102 is provided with a light hole in front of the camera assembly 101, and the camera assembly 101 collects light through the light hole. In the case of movable connection between the camera assembly 101 and the side wall of the housing 102, the camera assembly 101 is assembled inside the housing 102 through a telescopic mechanism, and when shooting is needed, the telescopic structure pushes the camera assembly 101 out of the housing 102.
[0136] The camera assembly 101 is electrically connected with the processor. The processor and the camera assembly 101 can transmit control signals and data, the processor can control the camera assembly 190 to perform shooting operation, and the picture shot by the camera assembly 190 can be transmitted to the processor 180.
[0137] In an embodiment of the user equipment, the circuit board on which the image sensor in the camera assembly 101 is located and the circuit board on which the processor is located can be different circuit boards, for example, the processor can be located on a main circuit board, and the circuit board on which the image sensor in the camera assembly is located is electrically connected with the main circuit board through a wire.
[0138] The user equipment can be a wearable device, a vehicle terminal, a personal mobile terminal, a personal computer, a multimedia player, an electronic reader, a smart home device, or a robot, etc. The personal mobile terminal can also be a smart phone, or a tablet computer, etc. The wearable device can also be a smart bracelet, or a smart medical device, or a head-mounted terminal, etc. The head-mounted terminal device can be a virtual reality, or an augmented reality terminal, etc., such as Google glasses. The smart medical device can be a smart blood pressure measuring device, or a smart blood glucose measuring device, etc. The smart home device can be a smart access control system, etc. The robot can be other various electronic devices with photographing or video recording functions, etc.
[0139] As shown in Figure 8 , in addition to the processor 1010, the shell of the user equipment 100 can also include the components shown in Figure 8 , it should be noted that, Figure 8 , the components shown in Figure 8 are not necessarily required for the user equipment, and can be adjusted according to the functions supported by the user equipment 100, for example, if the user equipment needs to support more functions, more components need to be installed. If the user equipment supports few functions, Figure 8 , some components shown in Figure 8 may be combined, for example, some modules in the communication module 1020 can be combined with the processor 1010 as one component.
[0140] Figure 8 The user equipment 1001 shown in includes a communication module 1020, a user identification module 1024, a memory 1030, a sensor module 1040, an input device 1050, a display 1060, an interface 1070, an audio module 1080, a camera assembly 101, a power management module 1095, a battery 1096, an indicator 1097, and a motor 1098, as well as a processor 1010.
[0141] The functions of the processor 1010 are generally divided into three aspects, the first aspect is to run an operating system; the second aspect is to process various data, for example, to process various data received from the communication module 1020 or the input device 1050, and to send the processed data through the communication module 1020, or to display it through the display. The third aspect is to run application programs and control multiple hardware connected to the processor 1010 to complete corresponding functions. For example, by controlling the camera assembly 101, the user is provided with a photographing function.
[0142] The processor 1010 can have one or more of the functions of the three aspects described above, and can be split into one or more processors according to different functions, for example: a graphics processing unit (GPU), an image signal processor (ISP), a central processing unit (CPU), an application processor (AP), or a communication processor (CP), etc. The split processors with independent functions can be arranged on other associated modules, for example: the communication processor (CP) can be arranged together with the cellular module 1021.
[0143] In hardware, the processor 1010 can be composed of one or more IC chips.
[0144] The processor can be an integrated circuit that works according to non-solidified instructions or an integrated circuit that works according to solidified instructions. The processor that works according to non-solidified instructions realizes the functions carried by the processor by reading and executing instructions in the internal memory 1032. The processor that works according to solidified instructions realizes the functions carried by the processor by running its own hardware logic circuit. In the process of running its own hardware logic circuit, the processor that works according to solidified instructions often also needs to read some data from the internal memory 1032, or output the running results to the internal memory 1032.
[0145] The memory 1030 includes the internal memory 1032 and can further include the external memory 1034. The internal memory 1032 can include one or more of volatile memory (e.g., dynamic random access memory (DRAM), static random access memory (SRAM), or synchronous dynamic random access memory (SDRAM), etc.), nonvolatile memory (e.g., one time programmable read only memory (OTPROM), programmable read only memory (PROM), erasable programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), mask programmable read only memory, flash memory, or flash storage (e.g., NAND flash, or NOR flash, etc.), a hard drive, or a solid state drive (SSD).
[0146] The external memory 1034 can include a flash drive, such as a compact flash (CF), a secure digital card (SD card), a micro-SD (Secure Digital) card, a mini-SD (Secure Digital) card, an extreme digital-picture card (xD card), a multi media card (MMC), a memory stick, or the like.
[0147] The communication module 1020 can include a cellular module 1021, a Wi-Fi (wireless fidelity) module 1023, a Bluetooth (BT) module 1025, a GPS (Global Positioning System) module 1027, an NFC (Near Field Communication) module 1028, and a radio frequency (RF) module 1029. The cellular module 1021 can provide, for example, a voice call service, a video call service, a text message service, or an Internet service through a communication network.
[0148] The RF module 1029 is used to transmit / receive a communication signal (e.g., an RF signal), and can include a transceiver, a power amplifier module (PAM), a frequency filter, a low noise amplifier (LNA), or an antenna, etc.
[0149] The user identification module 1024 is used to store unique identification information (e.g., an integrate circuit card identity (ICCID) or user information (e.g., an international mobile subscriber identification number (IMSI). The user identification module 1024 can include an embedded SIM (Subscriber Identity Module) card, etc.
[0150] The sensor module 1040 detects a state of the user device 1001 and / or measures a physical quantity. The sensor module 1040 can include one or more of a gesture sensor 1040A, a gyro sensor 1040B, an atmospheric pressure sensor 1040C, a magnetic sensor 1040D, an acceleration sensor 1040E, a grip sensor 1040F, a proximity sensor 1040G, a color sensor 1040H (e.g., red green blue (RGB) sensor), a bio sensor 1040I, a temperature / humidity sensor 1040J, an illuminance sensor 1040K, an ultraviolet (UV) sensor 1040M, an olfactory sensor (electronic nose sensor), an electromyography (EMG) sensor, an electroencephalogram (EEG) sensor, an electrocardiogram (ECG) sensor, an infrared (IR) sensor, an iris recognition sensor, and a fingerprint sensor.
[0151] The input device 1050 can include one or more of a touch panel 1052, a (digital) pen sensor 1054, a key 1056, and an ultrasonic input device 1058. The (digital) pen sensor 1054 can be separately provided or can be a part of the touch panel 1052. The key 1056 can include one or more of a physical button, an optical button, and a keypad. The ultrasonic input device 1058 senses ultrasonic waves generated by a microphone 1088 or other input means.
[0152] The display 1060 (or can also be referred to as a screen) presents various contents (e.g., text, images, videos, icons, symbols, or the like) to a user. The display 1060 can include a panel 1062, which can be rigid, flexible, or transparent, or wearable. The display 1060 can further include a hologram device 1064 or a projector 1066, and can further function to receive a touch, a gesture, a proximity, or a hovering, or the like, input from an electronic pen or a part of a user's body.
[0153] The panel 1062 and the touch panel 1052 can be integrated. The hologram device 1064 displays a stereoscopic image in a space using an optical interference phenomenon. The projector 1066 projects light onto the display 1060 to display an image.
[0154] The interface 1070 can include, for example, an HDMI (High Definition Multimedia Interface) 1072, a USB (Universal Serial Bus) 1074, an optical interface 1076, a D-subminiature (D-sub) 1078, a Mobile High-Definition Link (MHL) interface, an SD card / Multimedia Card (MMC) interface, or an Infrared Data Association (IrDA) interface, among others.
[0155] The audio module 1080 converts sound into electrical signals or converts electrical signals into sound.
[0156] The audio module 1080 can process sound information input or output through a speaker 1082, a receiver 1084, an earphone 1086, or a microphone 1088.
[0157] The power management module 1095 manages power supplied to other modules in the user device 1001. The indicator 1097 displays a state of the user device 1001 or a state of each component in the user device 1001, such as a booting state, a message state, or a charging state, among others.
[0158] The motor 1098 drives one or more components in the user device 1001 to move mechanically.
[0159] In the present application, "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents that the associated objects before and after it are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can represent a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.
[0160] In the description of the application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown by the drawings, and are only for convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.
[0161] The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.
Claims
1. A camera assembly, characterized in that, The camera assembly includes: an optical image stabilization motor, a housing, and a lens assembly. The optical image stabilization motor and the lens assembly are located inside the housing. One end of the housing is provided with an opening, through which the lens assembly collects light. The optical image stabilization motor is located inside the end of the housing with the opening. The optical image stabilization motor is used to drive the lens assembly to generate a compensation displacement, which is used to compensate for the displacement caused by the shaking of the lens assembly. The optical image stabilization motor includes a stationary stabilization component, a moving stabilization component, and a drive wire connecting the stationary stabilization component and the moving stabilization component. The stationary stabilization component is connected to the inner side of the end of the housing with an opening. The moving stabilization component of the optical image stabilization motor is located on one side of the stationary stabilization component and stacked together. The drive wire is used to drive the moving stabilization component to generate a compensation displacement. The moving stabilization component is used to drive the lens assembly to generate the compensation displacement. The housing includes an end plate and a side plate connected to the edge of the end plate. The opening is formed in the end plate. The stabilizing component of the optical image stabilization motor is connected to the inner wall of the end plate. Alternatively, the stabilizing component of the optical image stabilization motor is connected to the inner wall of the side plate at the end near the end plate. The camera assembly also includes a focusing motor, which drives the lens assembly to move to achieve focusing. The focusing motor is located inside the housing and between the circuit board and the optical image stabilization motor. The circuit board is located on the image side of the lens assembly. The focusing motor is connected to the image stabilization component of the optical image stabilization motor. The camera assembly also includes an image sensor for capturing light passing through the lens assembly and forming an image. The image sensor is located inside the housing and at one end opposite the opening. The camera assembly also includes a spring or spring sheet connected between the image stabilization stationary component and the housing. The focusing motor can drive the optical image stabilization motor to move relative to the housing along the direction of the optical axis of the lens assembly or in a direction parallel to the optical axis of the lens assembly. Alternatively, the spring or spring sheet is connected between the image stabilization element and the focusing motor, and the focusing motor is capable of moving relative to the optical image stabilization motor in the direction of the optical axis of the lens assembly or in a direction parallel to the optical axis of the lens assembly.
2. The camera assembly as described in claim 1, characterized in that, The side plate of the housing is located in the space around the focusing motor. The image stabilization component of the optical image stabilization motor is fixedly connected to the inner wall of the end plate, or the image stabilization component of the optical image stabilization motor is fixedly connected to the inner wall of the side plate near the end plate.
3. The camera assembly as described in claim 2, characterized in that, The focusing motor includes a stationary focusing component, a moving focusing component, and a driving component; The focusing actuator of the focusing motor is assembled together with the lens assembly, or the focusing actuator of the focusing motor is integrally formed with the lens mount of the lens assembly. The stationary focusing component of the focusing motor is located outside the moving focusing component, and the driving component is located between the stationary focusing component and the moving focusing component of the focusing motor. The driving component is used to drive the moving focusing component to move relative to the stationary focusing component along the direction of the optical axis or along a direction parallel to the optical axis. The focusing stationary component of the focusing motor is fixedly connected to the image stabilization component of the optical image stabilization motor, or the focusing stationary component of the focusing motor and the image stabilization component of the optical image stabilization motor are integrally formed. The image stabilization component of the optical image stabilization motor is movably connected to the focusing component of the focusing motor.
4. The camera assembly as described in claim 3, characterized in that, One end of the stationary focusing component of the focusing motor facing the end plate of the housing is fixedly connected to the anti-shake component of the optical image stabilization motor; the other end of the moving focusing component of the focusing motor facing the end plate of the housing is movably connected to the anti-shake component of the optical image stabilization motor.
5. The camera assembly as claimed in claim 1, characterized in that, The fixed anti-shake component of the optical image stabilization motor is movably connected to the inner wall of the end plate, or the fixed anti-shake component of the optical image stabilization motor is movably connected to the inner wall of the side plate near the end plate.
6. The camera assembly as claimed in claim 5, characterized in that, The focusing motor includes a first moving part, a second moving part, and a driving component; The second moving part of the focusing motor is disposed in the space surrounding the lens assembly and assembled with the lens mount of the lens assembly, or the second moving part of the focusing motor is integrally formed with the lens mount of the lens assembly. The first moving part of the focusing motor is disposed outside the second moving part, and the driving part of the focusing motor is disposed between the side plate of the housing and the focusing motor, for driving the focusing motor and the lens assembly to move relative to the side plate along the direction of the optical axis or along a direction parallel to the optical axis. The first moving part of the focusing motor is fixedly connected to the fixed part of the optical image stabilization motor, or the first moving part and the fixed part of the optical image stabilization motor are integrally formed. The image stabilization motor's image stabilization component is fixedly connected to the second moving component of the focusing motor, or the image stabilization motor's image stabilization component and the second moving component of the focusing motor are integrally formed.
7. The camera assembly as claimed in claim 6, characterized in that, The anti-shake stationary component is movably connected to the inner wall of the end plate of the housing, or the anti-shake stationary component is movably connected to the inner wall of the side plate of the housing near the end plate. The edge of the stationary anti-shake component, which is stacked on top of the anti-shake component, protrudes beyond the edge of the anti-shake component; The first moving part of the focusing motor is fixedly connected at one end facing the end plate of the housing to the edge portion of the fixed image stabilizing part protruding outside the moving part; the second moving part of the focusing motor is movably connected at one end facing the end plate of the housing to the moving part of the image stabilizing part; the moving part of the image stabilizing part is used to drive the second moving part of the focusing motor to move, so as to generate the compensation displacement, and correspondingly, the second moving part of the focusing motor is used to drive the lens assembly to move, so as to generate the compensation displacement.
8. The camera assembly as claimed in claim 1, characterized in that, The side plate of the housing is located in the space around the focusing motor. The drive wire of the optical image stabilization motor is connected to the circuit board by a first lead, which is connected to the circuit board along the outside of the side plate of the housing.
9. The camera assembly as claimed in claim 8, characterized in that, The first lead is electrically connected to the circuit board at a position away from the pin of the image sensor, which is used to collect light passing through the lens assembly and form an image.
10. The camera assembly as claimed in claim 9, characterized in that, At least a portion of the circuit board is located on the outside of the side plate. The first lead is connected to the circuit board at the outside of the side plate of the housing. A magnetic shielding material film is attached to the inner wall of the side plate of the housing near the first lead. The magnetic shielding material film is used to shield the electromagnetic radiation of the electrical signal in the first lead.
11. The camera assembly as claimed in claim 1, characterized in that, The side plate of the housing is located in the space surrounding the focusing motor, and a second lead is connected between the focusing motor and the circuit board. The second lead is connected to the circuit board from the outside of the side plate of the housing.
12. The camera assembly as claimed in claim 11, characterized in that, The second lead is electrically connected to the circuit board at a position away from the pin of the image sensor, which is used to collect light passing through the lens assembly and form an image.
13. The camera assembly as claimed in claim 12, characterized in that, At least a portion of the circuit board is located on the outside of the side plate, and the location where the second lead connects to the circuit board is also located on the outside of the side plate of the housing. A magnetic shielding material film is attached to the inner wall of the side plate of the housing near the second lead. The magnetic shielding material film is used to shield the electromagnetic radiation of the electrical signal in the second lead.
14. A user equipment, characterized in that, The user equipment includes a processor, a housing, and a camera assembly as described in any one of claims 1-13, wherein the processor is located inside the housing, the camera assembly is assembled inside the housing, and the processor is configured to send control signals to the camera assembly.
Citation Information
Patent Citations
Miniature optical anti-vibration camera module
CN106131435A
Camera assembly and user equipment
CN210075364U
Control of a shape memory alloy actuation arrangement
US20110277462A1
Suspension Mechanism for an Optical Image Anti-Shake Device
US20130258475A1