WO2020093821A1 - Ensemble de modules d'imagerie, ensemble caméra et dispositif électronique - Google Patents

Ensemble de modules d'imagerie, ensemble caméra et dispositif électronique Download PDF

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Publication number
WO2020093821A1
WO2020093821A1 PCT/CN2019/109363 CN2019109363W WO2020093821A1 WO 2020093821 A1 WO2020093821 A1 WO 2020093821A1 CN 2019109363 W CN2019109363 W CN 2019109363W WO 2020093821 A1 WO2020093821 A1 WO 2020093821A1
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WO
WIPO (PCT)
Prior art keywords
imaging module
light
circuit board
driving
chip
Prior art date
Application number
PCT/CN2019/109363
Other languages
English (en)
Chinese (zh)
Inventor
张弓
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201811311088.3A external-priority patent/CN109194860B/zh
Priority claimed from CN201821822612.9U external-priority patent/CN209151242U/zh
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2020093821A1 publication Critical patent/WO2020093821A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof

Definitions

  • the present application relates to the field of electronic devices, in particular to an imaging module, a camera assembly and an electronic device.
  • the camera of the mobile phone adopts a periscope lens.
  • the periscope camera can perform three times the optical focal length to obtain an image with higher quality.
  • the periscope camera includes a light-converting element, which is used to turn the light incident into the periscope lens and transmit it to the image sensor to enable the image sensor to acquire the image outside the periscope lens.
  • the periscope camera also includes a driver chip for the operation of the periscope camera, which leads to a larger volume of the periscope camera.
  • the application provides an imaging module, a camera assembly and an electronic device.
  • the housing has a light inlet, and the reflective element is used to turn the incident light incident from the light inlet and pass the lens assembly to the image sensor so that the image sensor senses the imaging The incident light outside the module;
  • the driving mechanism is used to drive the moving element to move along the optical axis of the lens assembly to focus and image the lens assembly on the image sensor;
  • the imaging module further includes a chip circuit board and a driving chip.
  • the chip circuit board is fixed on a side of the driving mechanism, and the driving chip is fixed on a side of the chip circuit board opposite to the driving mechanism.
  • the driving chip is electrically connected to the driving mechanism through the chip circuit board.
  • the camera assembly of the embodiment of the present application includes a first imaging module, a second imaging module, and a third imaging module.
  • the first imaging module is the imaging module described above, and the third imaging module
  • the angle of view is larger than the angle of view of the first imaging module and smaller than the angle of view of the second imaging module.
  • An electronic device includes a body and a sliding module for sliding between a first position accommodated in the body and a second position exposed from the body, the sliding module is provided There are the camera components described above.
  • the driving chip is fixed to the side of the driving mechanism through the chip circuit board, and is electrically connected to the driving mechanism through the chip circuit board, so that the driving chip and the driving mechanism are connected
  • the structure is more compact, which is conducive to reducing the volume of the imaging module.
  • FIG. 1 is a schematic diagram of a state of an electronic device according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of another state of an electronic device according to an embodiment of the present application.
  • FIG. 3 is a schematic perspective view of a camera assembly according to an embodiment of the present application.
  • FIG. 4 is a schematic perspective view of a first imaging module according to an embodiment of the present application.
  • FIG. 5 is an exploded schematic view of the first imaging module of the embodiment of the present application.
  • FIG. 6 is a schematic cross-sectional view of a first imaging module according to an embodiment of the present application.
  • FIG. 7 is a schematic partial cross-sectional view of a first imaging module according to an embodiment of the present application.
  • FIG. 8 is a schematic cross-sectional view of a first imaging module according to another embodiment of the present application.
  • FIG. 9 is a schematic perspective view of a reflective element according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of light reflection imaging of an imaging module in the related art
  • FIG. 11 is a schematic diagram of light reflection imaging of a first imaging module according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of an imaging module in the related art
  • FIG. 13 is a schematic structural diagram of a first imaging module according to an embodiment of the present application.
  • FIG. 14 is a schematic cross-sectional view of a second imaging module according to an embodiment of the present application.
  • Electronic device 1000 body 110, sliding module 200, gyroscope 120;
  • Camera assembly 100 first imaging module 20, housing 21, light inlet 211, groove 212, top wall 213, side wall 214, escape hole 215, reflective element 22, light incident surface 222, backlight surface 224, light incident Surface 226, light exit surface 228, mounting base 23, curved surface 231, first lens assembly 24, lens 241, moving element 25, clip 222, first image sensor 26, driving mechanism 27, driving device 28, curved guide rail 281, central axis 282, chip circuit board 201, mounting portion 2011, connection portion 2022, driving chip 202, sensor circuit board 203, shielding cover 204, second imaging module 30, second lens assembly 31, second image sensor 32 ⁇ Third imaging module 40, bracket 50.
  • the imaging module includes a PCB circuit board with a driver chip.
  • the size of the shaking imaging module is larger than the ordinary imaging module and cannot be reduced.
  • the electronic device 1000 includes a body 110 and a sliding module 200.
  • the sliding module 200 is used to slide between a first position accommodated in the body 110 and a second position exposed from the body 110.
  • the sliding module 200 is provided with a camera assembly 100 and a gyroscope 120, and the camera assembly 100 and the gyroscope 120 are separated Settings.
  • the electronic device 1000 may be used to control the camera assembly 100 to operate according to the feedback data of the gyroscope 120 to achieve optical image stabilization shooting.
  • the camera assembly 100 and the gyroscope 120 are provided separately, which reduces the components in the camera assembly 100, thereby reducing the volume of the camera assembly 100.
  • the camera assembly 100 and the gyroscope 120 are both disposed in the sliding module 200, so that the gyroscope 120 is closer to the camera assembly 100, and the gyroscope 120 can accurately detect the jitter of the camera assembly 100, thereby improving the anti-shake effect of the camera assembly 100 .
  • the electronic device 1000 may be any one of various types of computer system equipment that is mobile or portable and performs wireless communication (only one form is exemplarily shown in FIG. 1).
  • the electronic device 1000 may be a mobile phone or a smart phone (for example, an iPhone based on TM, an Android-based phone), a portable game device (for example, Nintendo DS, TM, PlayStation Portable TM, Gameboy Advance TM, iPhone TM), laptop Computers, PDAs, portable Internet devices, music players and data storage devices, other handheld devices and such as watches, earphones, pendants, headphones, etc.
  • the electronic device 100 can also be other wearable devices (eg, Head-mounted devices (HMD) such as electronic glasses, electronic clothes, electronic bracelets, electronic necklaces, electronic tattoos, electronic devices or smart watches).
  • HMD Head-mounted devices
  • the electronic device 1000 may also be any one of a plurality of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders , Video recorders, cameras, other media recorders, radios, medical equipment, vehicle transportation instruments, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbook computers, personal digital assistants (PDAs), portable Multimedia player (PMP), Moving Picture Experts Group (MPEG-1 or MPEG-2) audio layer 3 (MP3) player, portable medical equipment and digital cameras and their combinations.
  • PDAs personal digital assistants
  • PMP portable Multimedia player
  • MPEG-1 or MPEG-2 Moving Picture Experts Group
  • MP3 audio layer 3
  • the electronic device 1000 may perform various functions (eg, play music, display videos, store pictures, and receive and send phone calls). If desired, the electronic device 1000 may be a portable device such as a cellular phone, a media player, other handheld devices, a wrist watch device, a pendant device, an earpiece device, or other compact portable devices.
  • a portable device such as a cellular phone, a media player, other handheld devices, a wrist watch device, a pendant device, an earpiece device, or other compact portable devices.
  • the gyroscope 120 can be used to detect the linear motion of the electronic device 1000 in the axial direction, and can measure the motion of rotation and deflection. For example, the gyroscope 120 can detect the vertical or horizontal state of the electronic device 1000, and then the central processor of the electronic device 1000 can control the display screen to rotate according to the acquired detection data.
  • the gyroscope 120 of the electronic device 1000 is used to detect minute jitter generated by the camera assembly 100, and the gyroscope 120 will detect the jitter data, such as the tilt angle caused by the camera assembly 100 jitter.
  • the deviation caused by the tilt is sent to the processing chip of the electronic device 1000, and the processing chip is, for example, a driving chip described below.
  • the processing chip controls the components in the imaging module to move relative to the components generated by the camera assembly 100 according to the received feedback data of the gyroscope 120 to achieve anti-shake.
  • the gyroscopes 120 of the electronic device 1000 are all disposed at positions other than the camera assembly 100, thereby saving the space for installing an independent gyroscope and a driving chip in the camera assembly 100.
  • the size of the camera assembly 100 is similar to that of an ordinary camera assembly, and the optical image stabilization can be achieved by using the gyroscope 120 of the electronic device 1000, which effectively reduces the size of the camera assembly 100 while retaining the image stabilization function.
  • the body 110 further includes a top end surface 1002 and a bottom end surface 1003 disposed opposite to the top end surface 1002.
  • the top end surface 1002 and the bottom end surface 1003 can extend along the width direction of the body 110. That is, the top end surface 1002 and the bottom end surface 1003 are the short sides of the electronic device 1000.
  • the bottom end surface 1003 is used to arrange connectors, microphones, speakers, etc. of the electronic device 1000.
  • a receiving slot 1004 is formed on the top of the body 110, and the receiving slot 1004 is recessed from the top of the body 110 toward the inside of the body 110.
  • the receiving groove 1004 may penetrate the side of the body 110.
  • the sliding module 200 is slidingly connected to the body 110 in the receiving slot 1004. In other words, the sliding module 200 slides the connecting body 110 to extend or retract the receiving slot 1004.
  • the sliding module 200 includes a top surface 2003. When the sliding module 200 is in the first position, the top surface is substantially flush with the top surface 1002.
  • the sliding module 200 can be connected to a screw mechanism, and the screw mechanism can drive the sliding module 200 to slide between a first position and a second position.
  • the camera assembly 100 includes a first imaging module 20, a second imaging module 30, a third imaging module 40, and a bracket 50.
  • the first imaging module 20, the second imaging module 30, and the third imaging module 40 are all disposed in the bracket 50 and fixedly connected to the bracket 50.
  • the bracket 50 can reduce the impact of the first imaging module 20, the second imaging module 30 and the third imaging module 40, and improve the lifespan of the first imaging module 20, the second imaging module 30 and the third imaging module 40 .
  • the field of view FOV3 of the third imaging module 40 is greater than the field of view FOV1 of the first imaging module 20 and smaller than the field of view FOV2 of the second imaging module 30, that is, FOV1 ⁇ FOV3 ⁇ FOV2.
  • FOV1 ⁇ FOV3 ⁇ FOV2 the field of view FOV2 of the second imaging module 30.
  • the FOV1 of the first imaging module 20 is 10-30 degrees
  • the FOV2 of the second imaging module 30 is 110-130 degrees
  • the FOV3 of the third imaging module 40 is FOV3 80-110 degrees.
  • the field of view FOV1 of the first imaging module 20 is 10 degrees, 12 degrees, 15 degrees, 20 degrees, 26 degrees, or 30 degrees.
  • the field of view FOV2 of the second imaging module 30 is 110 degrees, 112 degrees, 118 degrees, 120 degrees, 125 degrees, or 130 degrees.
  • the field of view FOV3 of the third imaging module 40 is 80 degrees, 85 degrees, 90 degrees, 100 degrees, 105 degrees, or 110 degrees.
  • the field of view FOV1 of the first imaging module 20 is small, it can be understood that the focal length of the first imaging module 20 is large. Therefore, the first imaging module 20 can be used to shoot a distant view, thereby obtaining a clear image of the distant view .
  • the field of view FOV2 of the second imaging module 30 is relatively large. It can be understood that the focal length of the second imaging module 30 is relatively short. Therefore, the second imaging module 30 can be used to shoot a close-up view to obtain a partial close-up image of an object.
  • the third imaging module 40 can be used to photograph objects normally.
  • the first imaging module 20, the second imaging module 30, and the third imaging module 40 are arranged side by side.
  • the first imaging module 20, the second imaging module 30, and the third imaging module 40 are arranged in a line.
  • the second imaging module 30 is located between the first imaging module 20 and the third imaging module 40.
  • the first imaging module 20 and the third imaging module 40 may be equipped with an optical anti-shake device, and the optical anti-shake device is generally configured with more magnetic elements. Therefore, the first imaging module 20 and the third imaging module 40 may generate a magnetic field.
  • the second imaging module 30 is located between the first imaging module 20 and the third imaging module 40, so that the first imaging module 20 and the third imaging module 40 can be far away, preventing the first imaging
  • the magnetic field formed by the module 20 and the magnetic field formed by the third imaging module 40 interfere with each other and affect the normal use of the first imaging module 20 and the third imaging module 40.
  • the first imaging module 20, the second imaging module 30, and the third imaging module 40 may be arranged in an L-shape.
  • the first imaging module 20, the second imaging module 30, and the third imaging module 40 may be arranged at intervals, and two adjacent imaging modules may also abut each other.
  • any one of the imaging modules may be a black-and-white camera, an RGB camera, or an infrared camera.
  • the processing chip of the electronic device 1000 is used to control the operation of the first imaging module 20 according to the feedback data of the gyroscope 120 to realize optical anti-shake shooting.
  • the first imaging module 20 includes a housing 21, a reflective element 22, a mounting base 23, a first lens assembly 24, a moving element 25, a first image sensor 26, and a driving mechanism 27.
  • the reflective element 22, the mounting base 23, the first lens assembly 24, and the moving element 25 are all disposed in the housing 21.
  • the reflective element 22 is disposed on the mounting base 23, and the first lens assembly 24 is fixed on the moving element 25.
  • the moving element 25 is provided on the first image sensor 26 side. Further, the moving element 25 is located between the reflective element 22 and the first image sensor 26.
  • the driving mechanism 27 connects the moving element 25 and the housing 21. After the incident light enters the housing 21, it passes through the reflective element 22, and then passes through the first lens assembly 24 to reach the first image sensor 26, so that the first image sensor 26 obtains an external image.
  • the driving mechanism 27 is used to drive the moving element 25 to move along the optical axis of the first lens assembly 24.
  • the housing 21 has a substantially square shape.
  • the housing 21 has a light inlet 211 from which incident light enters the first imaging module 20. That is to say, the reflective element 22 is used to redirect the incident light incident from the light entrance 211 and pass through the first lens assembly 24 to the first image sensor 26 so that the first image sensor 26 senses the first imaging module 20 incident light outside.
  • the first imaging module 20 is a periscope lens module.
  • the height of the periscope lens module is smaller, so that the overall thickness of the electronic device 1000 can be reduced.
  • the vertical lens module refers to that the optical axis of the lens module is a straight line, or that incident light is transmitted to the photosensitive device of the lens module along the direction of the linear optical axis.
  • the light inlet 211 is exposed through the through hole 11 so that external light passes through the through hole 11 and enters the first imaging module 20 from the light inlet 211.
  • the housing 21 includes a top wall 213 and a side wall 214.
  • the side wall 214 extends from the side 2131 of the top wall 213.
  • the top wall 213 includes two opposite sides 2131, the number of the side walls 214 is two, and each side wall 214 extends from a corresponding side 2131, or the side walls 214 are respectively connected to the top wall 213 On both sides.
  • the light inlet 211 is formed on the top wall 213.
  • the reflective element 22 is a prism or a plane mirror.
  • the prism may be a triangular prism, and the cross-section of the prism is a right triangle, where light is incident from one of the right sides of the right triangle, after being reflected by the hypotenuse, the other right angle Side shot. It can be understood that, of course, the incident light can be refracted by the prism and exit without reflection.
  • the prism can be made of glass, plastic and other materials with better light transmission.
  • a reflective material such as silver may be coated on one surface of the prism to reflect incident light.
  • the reflective element 22 is a plane mirror
  • the plane mirror reflects the incident light so as to achieve the turning of the incident light.
  • the reflective element 22 has a light incident surface 222, a backlight surface 224, a reflective surface 226 and a light exit surface 228.
  • the light incident surface 222 approaches and faces the light entrance 211.
  • the backlight surface 224 is away from the light entrance 211 and opposite to the light entrance surface 222.
  • the reflective surface 226 is connected to the light incident surface 222 and the backlight surface 224.
  • the light exit surface 228 is connected to the light entrance surface 222 and the backlight surface 224.
  • the reflective surface 226 is inclined relative to the light incident surface 222.
  • the light emitting surface 228 is opposite to the light reflecting surface 226.
  • the light passes through the light inlet 211 and enters the light reflecting element 22 from the light incident surface 222, then reflects through the light reflecting surface 226, and finally reflects the light reflecting element 22 from the light emitting surface 228 to complete the light conversion
  • the backlight surface 224 and the mounting base 23 are fixedly arranged, so that the reflective element 22 remains stable.
  • the reflective surface 226a of the reflective element 22a is inclined with respect to the horizontal direction, and the reflective element 22a has an asymmetric structure in the light reflection direction, so the reflective element 22a
  • the actual optical area below is smaller than that above the reflective element 22a, and it can be understood that the part of the reflective surface 226a away from the light entrance is less or cannot reflect light.
  • the reflective element 22 cuts off the corner away from the light entrance relative to the reflective element 22 a in the related art, which not only does not affect the reflected light effect of the reflective element 22, but also reduces the reflective The overall thickness of the element 22.
  • the angle ⁇ of the reflective surface 226 relative to the light incident surface 222 is inclined at 45 degrees.
  • the incident light is better reflected and converted, and has a better light conversion effect.
  • the reflective element 22 may be made of glass, plastic, or other materials with relatively good light transmittance.
  • a reflective material such as silver may be coated on one surface of the reflective element 22 to reflect incident light.
  • the light incident surface 222 is disposed parallel to the backlight surface 224.
  • the reflective element 22 can be kept stable, and the light incident surface 222 also appears as a flat surface.
  • the conversion process of the incident light in the reflective element 22 also forms a regular optical path, which Conversion efficiency is better.
  • the cross section of the reflective element 22 is substantially trapezoidal, or the reflective element 22 is substantially trapezoidal.
  • both the light incident surface 222 and the backlight surface 224 are perpendicular to the light exit surface 228.
  • a relatively regular reflective element 22 can be formed, so that the optical path of the incident light is relatively straight, and the conversion efficiency of the light is improved.
  • the distance between the light incident surface 222 and the backlight surface 224 ranges from 4.8 to 5.0 mm.
  • the distance between the light incident surface 222 and the backlight surface 224 may be 4.85 mm, 4.9 mm, 4.95 mm, or the like.
  • the distance between the light incident surface 222 and the backlight surface 224 can be understood as that the height of the reflective element 22 is 4.8-5.0 mm.
  • the reflective element 22 formed by the light incident surface 222 and the backlight surface 224 in the above distance range has a moderate volume, and can be better integrated into the first imaging module 20 to form a more compact and compact first imaging module 20.
  • the camera assembly 100 and the electronic device 1000 meet more consumer demands.
  • the light incident surface 222, the backlight surface 224, the reflective surface 226, and the light exit surface 228 are all hardened to form a hardened layer.
  • the material of the reflective element 22 is relatively brittle.
  • the light incident surface 222, the backlight surface 224, the reflective surface 226 and the light emitting surface of the reflective element 22 228 hardening treatment can be hardened on all surfaces of the reflective element to further improve the strength of the reflective element.
  • Hardening treatments such as infiltration of lithium ions, filming the above surfaces without affecting the conversion of light by the reflective element 22, etc.
  • the reflective element 22 turns the incident light incident from the light inlet 211 at an angle of 90 degrees.
  • the incident angle of incident light on the emission surface of the reflective element 22 is 45 degrees, and the reflection angle is also 45 degrees.
  • the angle at which the reflective element 22 turns the incident light may be other angles, such as 80 degrees, 100 degrees, etc., as long as the incident light can be turned to reach the first image sensor 26.
  • the number of reflective elements 22 is one. At this time, the incident light is transmitted to the first image sensor 26 after being turned once. In other embodiments, the number of the light-reflecting elements 22 is multiple. At this time, the incident light is transmitted to the first image sensor 26 after being turned at least twice.
  • the mounting base 23 is used to mount the reflective element 22, or the mounting base 23 is a carrier of the reflective element 22, and the reflective element 22 is fixed on the mounting base 23. This allows the position of the reflective element 22 to be determined, which is advantageous for the reflective element 22 to reflect or refract incident light.
  • the reflective element 22 may be fixed on the mounting base 23 by viscose to achieve a fixed connection with the mounting base 23.
  • the mounting base 23 can be movably disposed in the housing 21, and the mounting base 23 can rotate relative to the housing 21 to adjust the direction in which the reflective element 22 turns the incident light.
  • the mounting base 23 can drive the reflective element 22 to rotate toward the opposite direction of the shaking of the first imaging module 20, thereby compensating the incident deviation of the incident light of the light inlet 211, and achieving the effect of optical anti-shake.
  • the first lens assembly 24 is accommodated in the moving element 25. Further, the first lens assembly 24 is disposed between the reflective element 22 and the first image sensor 26. The first lens assembly 24 is used to image incident light on the first image sensor 26. This allows the first image sensor 26 to obtain an image with better quality.
  • the first lens assembly 24 When the first lens assembly 24 moves integrally along its optical axis, it can image on the first image sensor 26, so that the first imaging module 20 can focus.
  • the first lens assembly 24 includes a plurality of lenses 241. When at least one lens 241 moves, the overall focal length of the first lens assembly 24 changes, thereby achieving the zooming function of the first imaging module 20. More, driven by the driving mechanism 27 The moving element 25 moves in the housing 21 to achieve zooming.
  • the moving element 25 is cylindrical, and the plurality of lenses 241 in the first lens assembly 24 are fixed in the moving element 25 along the axial interval of the moving element 25.
  • the moving element 25 includes two clips 252 that sandwich the lens 241 between the two clips 252.
  • the moving element 25 is used to fix a plurality of lenses 241, the length of the required moving element 25 is large, and the moving element 25 can be cylindrical, square, etc., having a shape of a certain cavity, so moving The element 25 is arranged in a tube, so that a plurality of lenses 241 can be better arranged, and the lens 241 can be better protected in the cavity, so that the lens 241 is less likely to shake.
  • the moving element 25 clamps the plurality of lenses 241 between the two clips 252, which not only has a certain stability, but also reduces the weight of the moving element 25, and can reduce the driving of the driving mechanism 27.
  • the power required by the moving element 25, and the design difficulty of the moving element 25 is also relatively low, and the lens 241 is also easier to set on the moving element 25.
  • the moving element 25 is not limited to the cylindrical shape and the two clips 252 mentioned above.
  • the moving element 25 may include three or four clips 252 to form a more stable structure. , Or a simpler structure such as a clip 252; or a rectangular body, a circular body, etc. having a cavity to accommodate various regular or irregular shapes of the lens 241.
  • specific selection is sufficient.
  • the first image sensor 26 may use a complementary metal oxide semiconductor (CMOS, Complementary Metal Oxide Semiconductor) photosensitive element or a charge-coupled element (CCD, Charge-coupled Device) photosensitive element.
  • CMOS complementary metal oxide semiconductor
  • CCD Charge-coupled Device
  • the driving mechanism 27 is an electromagnetic driving mechanism, a piezoelectric driving mechanism, or a memory alloy driving mechanism.
  • the electromagnetic drive mechanism includes a magnetic field and a conductor. If the magnetic field moves relative to the conductor, an induced current is generated in the conductor. The induced current causes the conductor to be subjected to an ampere force, which causes the conductor to move.
  • the part of the drive mechanism that drives the moving element 25; the piezoelectric drive mechanism is based on the inverse piezoelectric effect of the piezoelectric ceramic material: if a voltage is applied to the piezoelectric material, mechanical stress is generated, that is, electrical energy and mechanical energy are converted, through Controlling its mechanical deformation to produce rotation or linear motion has the advantages of simple structure and low speed.
  • the drive of the memory alloy drive mechanism is based on the characteristics of the shape memory alloy: the shape memory alloy is a special alloy. Once it remembers any shape, even if it deforms, it can be restored to a certain temperature when heated The shape before deformation, in order to achieve the purpose of driving, has the characteristics of rapid displacement and free direction.
  • the first imaging module 20 further includes a driving device 28.
  • the driving device 28 is used to drive the mounting base 23 with the reflective element 22 to rotate around the rotation axis 29.
  • the driving device 28 is used to drive the mounting base 23 to move in the axial direction of the rotation axis 29.
  • the rotation axis 29 is perpendicular to the optical axis of the light inlet 211 and the photosensitive direction of the first image sensor 26, so that the first imaging module 20 realizes optical image stabilization in the optical axis of the light inlet 211 and the axis of the rotation axis 29 .
  • the driving device 28 drives the mounting base 23 to move in two directions, which not only can realize the optical image stabilization effect of the first imaging module 20 in two directions, but The volume of the first imaging module 20 is smaller.
  • the width direction of the first imaging module 20 is defined as the X direction
  • the height direction is defined as the Y direction
  • the length direction is defined as the Z direction.
  • the optical axis of the light inlet 211 is in the Y direction
  • the light receiving direction of the first image sensor 26 is in the Z direction
  • the axial direction of the rotation axis 29 is in the X direction.
  • the driving device 28 drives the mounting base 23 to rotate, so that the reflective element 22 rotates around the X direction, so that the first imaging module 20 realizes the Y-direction optical image stabilization effect.
  • the driving device 28 drives the mounting base 23 to move in the axial direction of the rotation axis 29, so that the first imaging module 20 realizes the X-direction optical image stabilization effect.
  • the first lens assembly 24 may be along the Z direction to enable the first lens assembly 24 to focus on the first image sensor 26.
  • the reflective element 22 rotates in the X direction
  • the light reflected by the reflective element 22 moves in the Y direction
  • the first image sensor 26 forms a different image in the Y direction to achieve the anti-shake effect in the Y direction.
  • the reflective element 22 moves in the X direction
  • the light reflected by the reflective element 22 moves in the X direction, so that the first image sensor 26 forms a different image in the X direction to achieve the anti-shake effect in the X direction.
  • the driving device 28 is formed with an arc-shaped guide rail 281, and the drive device 28 is used to drive the mounting base 23 to rotate along the arc-shaped guide rail 281 about the central axis 282 of the arc-shaped guide rail 281 and the axis along the central axis 282 Moving toward, the central axis 2282 coincides with the rotation axis 29.
  • the driving device 28 is used to drive the mounting base 23 to rotate along the arc guide rail 281 about the central axis 282 of the arc guide rail 281 and move axially along the central axis 282.
  • the driving device 28 uses the curved guide rail 281 to drive the mounting base 23 with the reflective element 22 to rotate together, the friction between the driving device 28 and the mounting base 23 is small, which is conducive to the smooth rotation of the mounting base 23 , The optical image stabilization effect of the first imaging module 20 is improved.
  • the mounting base (not shown) is rotatably connected to the rotating shaft 23 a, and the mounting base rotates around the rotating shaft 23 a to drive the reflective element 22 a to rotate together.
  • the friction force is f1
  • the radius of the rotating shaft 23a is R1
  • the thrust force is F1
  • the radius of rotation is A.
  • the reflective element 22a only needs to rotate slightly when performing anti-shake, F1 cannot be too large, because the excessive rotation of F1 will cause the rotation of the reflective element 22a to be too large to achieve the anti-shake function; and the imaging module itself needs to be light and short to cause reflective
  • the size of the element 22a cannot be too large, so the space for the enlargement of A is also limited, so that the influence of friction cannot be further eliminated.
  • the mounting base 23 rotates along an arc-shaped guide rail 281, and the arc-shaped guide rail 281 may be formed by arranging a plurality of rolling bodies 2811.
  • the radius of the rolling element 2811 is R2, and the turning radius of the reflective element 22 is B.
  • f1 is not significantly changed compared to f2
  • R1 is compared to R2
  • F1 is compared to F2
  • B can not be limited by the size of the reflective element 22, and can even be several times more than A. Therefore, in this case, the influence of friction on the rotation of the reflective element 22 can be greatly reduced (the size of K2 is reduced), thereby improving the rotational accuracy of the reflective element 22, making the optical image stabilization effect of the first imaging module 20 more good.
  • the mounting base 23 includes an arc-shaped surface 231 that is concentrically disposed with the arc-shaped guide rail 281 and cooperates with the arc-shaped guide rail 281.
  • the center of the curved surface 231 coincides with the center of the curved guide 281. This makes the mounting base 23 and the driving device 28 more compact.
  • the central axis 282 is located outside the first imaging module 20. In this way, the radius R2 of the arc-shaped guide rail 281 is large, which can reduce the adverse effect of friction on the rotation of the mounting base 23.
  • the drive device 28 is located at the bottom of the housing 21. In other words, the driving device 28 and the housing 21 have an integral structure. In this way, the structure of the first imaging module 20 is more compact.
  • the driving device 28 electromagnetically drives the mounting base 23 to rotate.
  • the driving device 28 is provided with a coil, and an electromagnetic sheet is fixed on the mounting base 23. After the coil is energized, the coil can generate a magnetic field to drive the movement of the electromagnetic sheet, thereby driving the mounting base 23 and the reflective element to rotate together.
  • the driving device 28 may drive the mounting base 23 in a piezoelectric driving manner or a memory alloy driving manner.
  • a piezoelectric driving method and the memory alloy driving method please refer to the above description, which will not be repeated here.
  • the first imaging module 20 further includes a chip circuit board 201 and a driving chip 202.
  • the chip circuit board 201 is fixed on the side of the driving mechanism 27, and the driving chip 202 is fixed on the chip circuit board 201 and the driving mechanism.
  • the driving chip 202 is electrically connected to the driving mechanism 27 through the chip circuit board 201.
  • the driving chip 202 is fixed to the side of the driving mechanism 27 through the chip circuit board 201, and is electrically connected to the driving mechanism 27 through the chip circuit board 201, which makes the structure between the driving chip 202 and the driving mechanism 27 more compact, which is beneficial to The volume of the first imaging module 20 is reduced.
  • the driving chip 202 is used to control the driving mechanism 27 to drive the moving element 25 to move along the optical axis of the first lens assembly 24, so that the first lens assembly 24 is focused and imaged on the first image sensor 26.
  • the driving chip 202 is used to control the driving device 28 according to the feedback data of the gyroscope 120 to drive the mounting base 23 with the reflective element 22 to rotate around the rotation axis 29.
  • the driving chip 202 is also used to control the driving device 28 to drive the mounting base 23 to move along the axis of the rotation axis 29 according to the feedback data of the gyroscope 120.
  • the driving chip 202 is also used to control the driving device 28 according to the feedback data of the gyroscope 120 to drive the mounting base 23 to rotate along the arc guide rail 281 about the central axis 282 of the arc guide rail 281 and move axially along the central axis 282.
  • the first imaging module 20 includes a sensor circuit board 203
  • the first image sensor 26 is fixed to the sensor circuit board 203
  • the chip circuit board 201 includes a mounting portion 2011 and a connecting portion 2022
  • the mounting portion 2011 is fixed to the drive
  • the driving chip 202 is fixed to the mounting portion 2011, and the connecting portion 2022 connects the mounting portion 2011 and the sensor circuit board 203.
  • the driving chip 202 can be electrically connected to the driving mechanism 27 through the sensor circuit board 203.
  • the connecting portion 2022 may be fixedly connected to the sensor circuit board 203 by soldering.
  • the driving chip 202 when assembling the first imaging module 20, the driving chip 202 may be fixed on the chip circuit board 201 first, and then the chip circuit board 201 with the driving chip 202 and the sensor circuit board 203 may be soldered Finally, the chip circuit board 201 with the driving chip 202 is fixed on the side of the driving mechanism 27.
  • the chip circuit board 201 may be fixedly connected to the driving mechanism 27 by soldering, bonding, or the like.
  • fixing the chip circuit board 201 on the side of the driving mechanism 27 may mean that the chip circuit board 201 is in contact with and fixed to the side of the driving mechanism 27, or may mean that the chip circuit board 201 is fixedly connected to the side of the driving mechanism 27 through other components.
  • the mounting portion 2011 is a rigid circuit board
  • the connecting portion 2022 is a flexible circuit board
  • the mounting portion 2011 is attached to the side surface of the drive mechanism 27.
  • the mounting portion 2011 is a rigid circuit board so that the mounting portion 2011 has good rigidity and is not easily deformed, which is beneficial to the fixed connection between the mounting portion 2011 and the side surface of the driving mechanism 27.
  • the mounting portion 2011 can be attached to the side surface of the drive mechanism 27 by adhesion.
  • the connection portion 2022 is a flexible circuit board so that the chip circuit board 201 is easily deformed, so that the chip circuit board 201 is easily mounted on the side of the driving mechanism 27.
  • the mounting portion 2011 may also be a flexible circuit board.
  • the housing 21 is formed with an escape hole 215, and the driving chip 202 is at least partially located in the escape hole 215 so as to be exposed to the housing 21.
  • the driving chip 202 penetrates the casing 21 so that there is an overlap between the driving chip 202 and the casing 21, which makes the structure between the driving chip 202 and the casing 21 more compact, which can further reduce the volume of the first imaging module 20 .
  • the shape and size of the avoiding hole 215 match the shape and size of the driving chip 202 respectively.
  • the size of the avoiding hole 215 is slightly larger than the size of the driving chip 202, and the shape of the avoiding hole 215 is the same as the shape of the driving chip 202.
  • the escape hole 215 is formed on the side wall 214 of the housing 21. It can be understood that the escape hole 215 penetrates the inside and outside of the side wall 214. Of course, in other embodiments, the escape hole 215 may be formed on the top wall 213 of the housing 21.
  • the first imaging module 20 further includes a shielding cover 204 that is fixed to the chip circuit board 201 and covers the driving chip 202.
  • the shielding cover 204 can protect the driving chip 202 and prevent the driving chip 202 from being physically impacted.
  • the shielding cover 204 can also reduce the electromagnetic influence on the driving chip 202.
  • the shield 204 can be made of metal material.
  • the material of the shield 204 is stainless steel.
  • the chip circuit board 201 is fixed to the mounting portion 2011.
  • the mounting portion 2011 is preferably a rigid circuit board or a plate material combining a flexible circuit board and a reinforcement board.
  • the second imaging module 30 is a vertical lens module.
  • the second imaging module 30 may also be a periscope lens module.
  • the second imaging module 30 includes a second lens assembly 31 and a second image sensor 32.
  • the second lens assembly 31 is used to image light on the second image sensor 32.
  • the incident optical axis of the second imaging module 30 and the second The optical axis of the lens assembly 31 coincides.
  • the second imaging module 30 may be a fixed-focus lens module. Therefore, there are fewer lenses 241 of the second lens assembly 31, so that the height of the second imaging module 30 is lower, which is beneficial to reducing electronic devices 1000 thickness.
  • the type of the second image sensor 32 may be the same as the type of the first image sensor 26, which will not be repeated here.
  • the structure of the third imaging module 40 is similar to the structure of the second imaging module 30.
  • the third imaging module 40 is also a vertical lens module. Therefore, for the characteristics of the third imaging module 40, please refer to the characteristics of the second imaging module 40, which is not repeated here.
  • the first imaging module 20 includes a housing 21, a reflective element 22, a first lens assembly 24, a moving element 25, a first image sensor 26, and a driving mechanism 27.
  • the reflective element 22, the first lens assembly 24, the moving element 25, the first image sensor 26, and the driving mechanism 27 are all disposed in the housing 21.
  • the moving element 25 is located between the reflective element 22 and the first image sensor 26.
  • the first lens assembly 24 is fixed on the moving element 25.
  • the housing 21 has a light inlet 211.
  • the reflective element 22 is used to divert the incident light incident from the light entrance 211 and pass through the first lens assembly 24 to the first image sensor 26 so that the first image sensor 26 senses the incidence outside the first imaging module 20 Light.
  • the first imaging module 20 further includes a chip circuit board 201 and a driving chip 202.
  • the chip circuit board 201 is fixed on the side of the driving mechanism 27, the driving chip 202 is fixed on the side of the chip circuit board 201 opposite the driving mechanism 27, and the driving chip 202
  • the chip circuit board 201 is electrically connected to the driving mechanism 27.
  • the driving chip 202 is fixed to the side of the driving mechanism 27 through the chip circuit board 201, and is electrically connected to the driving mechanism 27 through the chip circuit board 201, so that between the driving chip 202 and the driving mechanism 27
  • the structure is more compact, which is beneficial to reduce the volume of the first imaging module 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Studio Devices (AREA)

Abstract

La présente invention concerne un ensemble de modules d'imagerie, un ensemble caméra et un dispositif électronique. Un module d'imagerie (20) comprend un boîtier (21), un élément réfléchissant (22), un ensemble lentille (24), un élément de mouvement (25), un capteur d'image (26) et un mécanisme de commande (27). L'élément de mouvement (25) est disposé entre l'élément réfléchissant (22) et le capteur d'image (26). L'ensemble lentille (24) est fixé sur l'élément de mouvement (25). Le boîtier (21) est pourvu d'une entrée de lumière (211). L'ensemble de modules d'imagerie (20) comprend en outre une carte à circuits imprimés à puce (201) et une puce de commande (202). La carte à circuits imprimés à puce (201) est fixée sur la surface latérale du mécanisme de commande (27). La puce de commande (202) est fixée sur la surface de la carte à circuits imprimés à puce (201) à l'opposé du mécanisme de commande (27). La puce de commande (202) est raccordée électriquement au mécanisme de commande (27) par l'intermédiaire de la carte à circuits imprimés à puce (201).
PCT/CN2019/109363 2018-11-06 2019-09-30 Ensemble de modules d'imagerie, ensemble caméra et dispositif électronique WO2020093821A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201811311088.3A CN109194860B (zh) 2018-11-06 2018-11-06 成像模组、摄像头组件及电子装置
CN201821822612.9U CN209151242U (zh) 2018-11-06 2018-11-06 成像模组、摄像头组件及电子装置
CN201821822612.9 2018-11-06
CN201811311088.3 2018-11-06

Publications (1)

Publication Number Publication Date
WO2020093821A1 true WO2020093821A1 (fr) 2020-05-14

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CN113301232A (zh) * 2021-05-21 2021-08-24 维沃移动通信（杭州）有限公司 拍摄装置及电子设备
CN114640775A (zh) * 2022-03-23 2022-06-17 Oppo广东移动通信有限公司 摄像模组和电子装置
CN115767989A (zh) * 2022-11-21 2023-03-07 无锡美科微电子技术有限公司 芯片驱动模组和电子装置

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CN113301232A (zh) * 2021-05-21 2021-08-24 维沃移动通信（杭州）有限公司 拍摄装置及电子设备
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CN114640775A (zh) * 2022-03-23 2022-06-17 Oppo广东移动通信有限公司 摄像模组和电子装置
CN115767989A (zh) * 2022-11-21 2023-03-07 无锡美科微电子技术有限公司 芯片驱动模组和电子装置
CN115767989B (zh) * 2022-11-21 2023-11-24 无锡美科微电子技术有限公司 芯片驱动模组和电子装置

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