WO2021057529A1 - 摄像模组及终端设备 - Google Patents
摄像模组及终端设备 Download PDFInfo
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- WO2021057529A1 WO2021057529A1 PCT/CN2020/115091 CN2020115091W WO2021057529A1 WO 2021057529 A1 WO2021057529 A1 WO 2021057529A1 CN 2020115091 W CN2020115091 W CN 2020115091W WO 2021057529 A1 WO2021057529 A1 WO 2021057529A1
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- Prior art keywords
- camera module
- coil
- lens
- soft film
- zoom
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0875—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
- G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/282—Autofocusing of zoom lenses
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
- H01F7/0289—Transducers, loudspeakers, moving coil arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/066—Electromagnets with movable winding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/20—Electromagnets; Actuators including electromagnets without armatures
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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
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/69—Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/144—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only
- G02B15/1441—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive
- G02B15/144111—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive arranged ++-+
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0046—Movement of one or more optical elements for zooming
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0053—Driving means for the movement of one or more optical element
- G03B2205/0069—Driving means for the movement of one or more optical element using electromagnetic actuators, e.g. voice coils
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0053—Driving means for the movement of one or more optical element
- G03B2205/0084—Driving means for the movement of one or more optical element using other types of actuators
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
Definitions
- This application relates to the field of electronic technology, in particular to a camera module and terminal equipment.
- Electronic devices such as mobile phones have gradually become indispensable products in popular life. With the development of electronic technology, the functions of electronic devices continue to increase, including at least communication, Internet access, and shooting functions. Among them, the quality of shooting will directly affect the experience of using electronic equipment.
- the realization of the shooting function of electronic equipment relies on the camera module to complete the image collection on the hardware, and the calculation of the algorithm on the software to finally achieve the shooting experience required by the user.
- the position of the lens, and the front lens is difficult to increase the number of lenses unless the screen-to-body ratio is reduced; another problem is that splicing multiple fixed-focus lenses will cause the image quality to "offset", that is, between different zoom magnifications. There is a problem of image quality degradation.
- This application provides a camera module, which can solve the problem of a large number of camera modules (or lenses) in a terminal device and high cost.
- the technical solution is as follows:
- a camera module in a first aspect, includes two first magnets, a lens group, a zoom coil and a sensor, and the two first magnets are respectively located on opposite sides of the lens group;
- the lens group includes a first soft film lens;
- the zoom coil is connected to the soft film of the first soft film lens; wherein, when the zoom coil is energized, it acts on the magnetic field formed by the two first magnets
- the Lorentz force is generated below, and the shape of the first soft film lens is changed, thereby changing the focal length of the first soft film lens; the sensor is used for receiving the light beam incident through the lens group.
- the zoom coil may be located at the edge of the outer surface of the first soft film lens and connected to the soft film.
- the Lorentz force generated when the zoom coil is energized will push the zoom coil to move, thereby squeezing the first soft film lens to deform it.
- the zoom coil can also be located on the edge of the inner surface of the first soft film lens, that is, located inside the first soft film lens, and connected to the soft film. At this time, the Lorentz force generated when the zoom coil is energized will also push the zoom coil Move, so as to pull the soft film of the first soft film lens, deform the first soft film lens, and realize the zoom function.
- the camera module provided by the embodiments of the present application can realize continuous optical zoom function by arranging a zoom coil on the first soft film lens, and collect real images with better imaging effect; the overall structure is relatively compact and can be applied to In terminal devices with limited space such as mobile phones.
- the camera module of the present application has optical zooming capabilities, that is, a single lens can achieve the zooming capabilities of two fixed-focus lenses. Dual lenses can achieve the effect of more fixed-focus lenses, which can reduce the number of camera modules in the terminal equipment and reduce costs while ensuring the optical zoom capability.
- the camera module further includes a ring-shaped cylinder with an opening, wherein the sensor is fixed on the bottom surface of the ring-shaped cylinder opposite to the opening surface ;
- the two first magnets are respectively fixed in the annular cylinder, on both sides of the bottom surface.
- the camera module further includes a lens barrel connected to the annular barrel, and the lens barrel is connected to the The annular barrel is connected by an elastic device, and at least one lens in the lens group is connected with the lens barrel.
- the elastic device may be a spring or an elastic piece, etc., so that the lens barrel can be moved.
- the camera module further includes a second magnet located between the first soft film lens and the first magnet, so The second magnet has a one-to-one correspondence with the first magnet, and the direction of the magnetic field of the second magnet is the same as that of the corresponding first magnet.
- the second magnet is fixed on the lens barrel.
- the second magnet of this embodiment can converge the magnetic field of the first magnet to enhance the magnetic field. In the case of the same current, the Lorentz force generated by the zoom coil is increased, and the amount of deformation of the first soft film lens is increased, thereby Improve zoom capability.
- the camera module further includes a first compensation coil, and the first compensation coil is located between the two first magnets, wherein, when the first compensation coil is energized, a Lorentz force is generated under the action of a magnetic field to change the position of the lens group, thereby changing the image distance of the camera module.
- the first compensation coil is added to compensate for the change in the image distance caused by the change in the focal length of the camera module, and to ensure the imaging quality.
- all or part of the lenses included in the lens group are located in the space formed by the first compensation coil.
- the camera module further includes a lens barrel connected to the annular barrel, and the lens barrel is connected to the ring barrel.
- the annular barrel is connected by an elastic device, the first compensation coil and the first adjustment coil are fixed on the lens barrel, and at least one lens in the lens group is connected with the lens barrel.
- the elastic device may be a spring, an elastic piece, or the like. The Lorentz force generated after the first compensation coil is energized will push the lens barrel to drive the lens connected with the lens barrel to move together.
- the zoom coil and the first compensation coil are connected in series.
- the one-to-one correspondence between the zoom value and the compensation value can be known. Therefore, a current can be used to control the zoom and compensation functions.
- the camera module further includes a first adjustment coil, wherein the first adjustment coil is located in the Between the two first magnets, the number of turns of the first adjustment coil is less than the number of turns of the first compensation coil, or the length of a single turn of the first adjustment coil is less than the length of a single turn of the first compensation coil.
- the camera module further includes a second adjusting coil, and the lens group further includes a second soft film lens ,
- the second adjusting coil is connected to the soft film of the second soft film lens; wherein, when the second adjusting coil is energized, it generates a Lorentz force under the action of a magnetic field to change the second soft film lens
- the shape of the light beam is focused on the sensor.
- the camera module further includes a fourth magnet located between the second soft film lens and the first magnet, the fourth magnet corresponds to the first magnet one-to-one, and the fourth magnet
- the direction of the magnetic field is the same as that of the corresponding first magnet.
- the fourth magnet can converge the magnetic field, enhance the Lorentz force, and increase the amount of deformation of the second soft film lens.
- the number of turns and single-turn length of the zoom coil and the first compensation coil are designed, and a relatively ideal image can be obtained through a current control; if the image obtained is not clear due to special reasons, such as assembly errors or Factors such as the deterioration of the stability of the lens after working for a long time may cause the image to be not clear enough, and the adjustment coils provided in the above two embodiments are required to further adjust the camera module to further improve the image quality.
- the camera module further includes a second compensation coil, and the lens
- the group also includes a third soft film lens, and the second compensation coil is connected to the soft film of the third soft film lens; wherein, when the second compensation coil is energized, a Lorentz force is generated under the action of a magnetic field, The shape of the third soft film lens is changed, thereby changing the image distance of the camera module.
- a second compensation coil is added to compensate for the change in the image distance caused by the change in the focal length of the camera module, and to ensure the imaging quality.
- the camera module further includes a lens located between the third soft film lens and the first magnet
- the third magnet corresponds to the first magnet one-to-one, and the direction of the magnetic field of the third magnet is the same as that of the corresponding first magnet.
- the third magnet can converge the magnetic field, enhance the Lorentz force, and increase the amount of deformation of the third soft film lens.
- the zoom coil and the second compensation coil are connected in series.
- the one-to-one correspondence between the zoom value and the compensation value can be known. Therefore, a current can be used to control the zoom and compensation functions.
- the camera module further includes a first adjustment coil, and the first adjustment coil is located in the Between the two first magnets, where the first adjusting coil generates Lorentz force under the action of a magnetic field when energized, and changes the position of the lens group, thereby changing the image distance of the camera module.
- the camera module further includes a second adjusting coil
- the lens group further includes a second soft A film lens
- the second adjustment coil is connected to the soft film of the second soft film lens; wherein the number of turns of the second adjustment coil is less than the number of turns of the second compensation coil, or the second adjustment coil
- the single-turn length of is smaller than the single-turn length of the second compensation coil.
- the provided adjustment coil further adjusts the camera module and further improves the image quality.
- the camera module further includes a reflecting mirror for reflecting the input light beam to the lens group.
- the camera module provided by the embodiments of the present application can realize a periscope structure, fold the light path, reduce the volume of the camera module, and can be applied to terminal devices that require volume, such as mobile phones.
- the light-blocking area of the coil connected to the soft film in the soft film lens is smaller than that of the soft film lens and the 1/4 of the surface area where the coils are connected.
- the zoom coil, the second compensation coil, and the second adjustment coil; the above-mentioned size requirements can ensure that the beam of sufficient intensity reaches the sensor without too much loss.
- the specific value of the light-blocking area can be changed according to the actual situation and is not limited in this application.
- the soft film lens is composed of a soft film wrapped with liquid or gel; or the soft film lens is a closed film composed of a soft film and a lens.
- the space is composed of liquid or gel wrapped in it.
- the camera module further includes a controller, configured to generate control information according to the information sent by the sensor, and control the foregoing implementation The energization amount of the coil disclosed in the example.
- the soft film lens includes a soft film deformation area and a lens fixing area
- the camera module further includes a conductive rod, which is slidable and conductive.
- the lens fixing area is used to fix the lens on the lens barrel
- the conductive rod is located in the lens fixing area and is used to conduct electricity
- the sliding conductive device is located on the conductive rod
- the lead wires are respectively connected to the coil on the soft film lens and the sliding conductive device.
- the sliding conductive device can move along the conductive rod and is connected to the coil through a lead.
- the soft film lens may be any soft film lens mentioned in the above possible implementation manners, and the coil may be any coil on the soft film lens mentioned in the above possible implementation manner.
- a zoom coil, a second compensation coil, and a second adjustment coil may be any soft film lens mentioned in the above possible implementation manner.
- a zoom method using the camera module provided in the first aspect including: receiving a zoom instruction, and determining the amount of power to the zoom coil according to the received zoom instruction, where the amount of power is zoom The required voltage or current value; when the zoom coil is energized, the Lorentz force generated after the zoom coil is energized will push the zoom coil to move, deform the first soft film lens, and play the role of changing the focal length.
- the camera module includes a compensation coil
- the compensation coil is energized, and the Lorentz force generated after the compensation coil is energized is used to compensate for the change in the image distance caused by the focal length change, and the degree of image quality degradation caused by the change in focal length.
- the method further includes: energizing the adjustment coil, and the adjustment coil is used to connect the camera module after the adjustment coil is energized.
- the image distance can be adjusted so that the beam can be more accurately focused on the sensor and the loss of the beam can be reduced.
- the method further includes: according to the received zoom instruction, invoking the corresponding The camera module. For example, if you need to take a photo with a telephoto, call a camera module with a larger focal length.
- a terminal device in a third aspect, includes a camera module, a processor, and a display as described in any one of the embodiments of the first aspect, wherein the camera module is used to collect image information, and The processor is used to process the image information and control the display to display the collected image.
- the terminal device further includes a memory for storing image information. The user can recall the photos or videos taken from the memory when needed.
- the terminal device includes multiple camera modules, and at least one camera module is implemented as in any one of the first aspect.
- the embodiments of the present application may use multiple camera modules as described in any one of the implementation manners of the first aspect, or may additionally add several fixed-focus lenses. Compared with the existing zoom technology of splicing fixed-focus lenses, the camera module The number of groups is smaller, and the camera module of the present application can realize continuous optical zoom, and the imaging quality is better.
- a camera device for example, a camera or a video camera.
- the camera device includes the camera module according to any one of the embodiments of the first aspect, and a packaging structure.
- a readable storage medium stores instructions that, when run on a terminal device, cause the terminal device to execute any one of the second aspect or the second aspect. The method described in the embodiment.
- the sixth aspect provides a computer program product containing instructions, which when run on a terminal device, causes the terminal device to execute the method according to the second aspect or any one of the implementation manners of the second aspect.
- the camera module provided in the embodiments of the present application can be used as a separate camera, and can also be applied to devices that need to take photos or videos in different scenarios in fields such as smart phones, tablet computers, and robots.
- the camera module provided by the embodiment of the application can realize the continuous optical zoom function, and the real images are collected, and the imaging effect is better; it is the same as the commonly used solution to realize the zoom ability by stitching multiple fixed focus lenses.
- the camera module of the present application has the optical zoom capability, that is, a single lens can achieve the zoom capability of two fixed focus lenses, and a dual lens can achieve more effects of a fixed focus lens, under the condition that the optical zoom capability remains unchanged ,
- the number of camera modules in the terminal device can be reduced; in addition, multiple camera modules disclosed in the present application can also solve the problem of image quality "out of gear" existing in the splicing of existing fixed-focus lenses.
- Fig. 1 is a schematic diagram of imaging of a camera module
- FIG. 2 is a schematic structural diagram of a camera module provided by an embodiment of the application.
- FIG. 3 is a schematic diagram of the first soft film lens in the camera module provided by an embodiment of the application.
- FIG. 4 is a schematic structural diagram of a camera module provided by another embodiment of the application.
- FIG. 5 is a schematic diagram of the arrangement of magnets in a camera module provided by another embodiment of the application.
- FIG. 6 is a schematic diagram of the arrangement of the first magnet and the corresponding drop magnet in the camera module provided by another embodiment of the application;
- FIG. 7 is a schematic structural diagram of a camera module provided by another embodiment of the application.
- FIG. 8 is a schematic diagram of the connection mode of the zoom coil and the compensation coil in the camera module provided by another embodiment of the application;
- FIG. 9 is a schematic diagram of the connection mode of the zoom coil and the compensation coil in the camera module provided by another embodiment of the application.
- FIG. 10 is a schematic structural diagram of a camera module provided by another embodiment of this application.
- FIG. 11 is a schematic structural diagram of a camera module provided by another embodiment of this application.
- FIG. 12 is a schematic structural diagram of a camera module provided by another embodiment of this application.
- FIG. 13 is a schematic structural diagram of a camera module provided by another embodiment of this application.
- FIG. 14 is a schematic structural diagram of a camera module provided by another embodiment of this application.
- FIG. 15 is a schematic structural diagram of a camera module provided by another embodiment of this application.
- FIG. 16 is a schematic structural diagram of a camera module provided by another embodiment of this application.
- FIG. 17 is a flowchart of a method for zooming using a camera module provided by an embodiment of the present application.
- FIG. 18 is a flowchart of a method for zooming using the camera module provided in an embodiment of the present application in the case of multiple camera modules;
- FIG. 19 is a schematic diagram of a terminal device including a camera module provided by an embodiment of the present application.
- the camera function of electronic devices such as mobile phones refers to the use of built-in or external digital cameras to capture still pictures or dynamic videos.
- the shooting capabilities of electronic devices have become one of the most concerned indicators.
- the realization of the shooting function of the electronic equipment is to complete the image collection through the optical module on the hardware, and the software relies on the calculation of the algorithm to finally achieve the shooting experience required by the user.
- the most important technology also includes zoom and focus technology.
- Focal length also known as focal length, is a measure of the concentration or divergence of light in an optical system. It refers to the distance from the center of the lens to the focal point of the light when parallel light is incident. The shorter the focal length, the larger the angle of view.
- the focal length of the optical module is fixed.
- Focusing also called focusing and focusing, refers to the process of changing the distance between the imaging surface and the lens according to the different positions of objects at different distances that are clearly imaged at the back of the lens, so that the image of the object is clear. Since all imaging systems have a depth of field, if the object being shot is outside the depth of field, the image will be blurred after the object is shot. In order to ensure that the shot object is clearly presented, it needs to be focused.
- Depth of field refers to the clear depth of imaging by the imaging optical system. Depth of field is a physical phenomenon, but the depth of field varies between different optical systems. As shown in Figure 1, it is a schematic diagram of lens imaging, ⁇ L is the depth of field, and L is the shooting distance. Among them, the size of the depth of field is related to the parameter focal length f of the optical lens itself, the aperture number (F number) of the lens, and is also related to the diameter of the circle of confusion ⁇ that the sensor used can distinguish.
- an embodiment of the present application provides a camera module.
- the camera module includes two first magnets (201, 202), and a lens group 203 (the lens group 203 in FIG. 2 includes 4 Lenses), zoom coil 204 and sensor 205;
- the two first magnets (201, 202) are respectively located on opposite sides of the lens group 203 to form a magnetic field;
- the lens group 203 includes a first soft film lens 2031;
- the zoom coil 204 is connected to the soft film of the first soft film lens 2031, wherein ,
- the zoom coil 204 can be located on the edge of the outer surface of the first soft film lens 2031 and connected to the soft film.
- the specific structure can be shown in Figure 3; it can also be located on the edge of the inner surface of the first soft film lens 2031, that is, on the edge of the first soft film lens 2031. Inside the membrane lens 2031, it is connected with the soft membrane.
- the zoom coil 204 When the zoom coil 204 is energized, it will generate Lorentz force under the action of a magnetic field, which can push the zoom coil 204 to move, thereby squeezing or pulling the soft film of the first soft film lens 2031, so that the first soft film lens 2031 changes shape. That is, change the surface shape of the first soft film lens 2031, such as curvature or other parameters, so as to change the focal length of the lens group to realize the zoom function; the sensor 205 is used to receive the light beam incident through the lens group 203.
- the first soft film lens can be composed of a soft film wrapped with liquid or gel.
- the first soft film lens can also be composed of a soft film and a closed space formed by the lens with a liquid or gel wrapped in it.
- the liquid can be oil, solvent, Ionic liquids, liquid metals, etc., are transparent or semi-transparent substances, which can be deformed under force under the wrapper of the soft film to realize the zoom function.
- the coil on the soft film lens can be a structure formed by winding a metal wire multiple times, or it can be wound only once, or even a metal ring, as long as it is energized, it can be pushed by Lorentz force in a magnetic field. In the subsequent embodiments, similar coils may also have the above-mentioned structure, which will not be repeated in this application.
- the camera module provided by the present application may further include an open ring tube 206, wherein the sensor 205 is fixed on the bottom surface of the ring tube 206 opposite to the opening surface; the two first magnets (201, 202) are respectively fixed to The inside of the ring barrel 206 is placed on the two sides of the bottom surface of the ring barrel 206; in addition, the camera module also includes a lens barrel 207 connected to the ring barrel 206.
- the lens barrel 207 can be connected to the ring barrel by means of springs or springs. The bottom or side surfaces of the barrel 206 are connected, so that the lens barrel 207 can move.
- the specific structure is shown in FIG. 4.
- the first soft film lens 2031 includes a soft film deformation area 301 and a lens fixing area 302.
- the lens fixing area 302 is used to fix the lens on the lens barrel 207;
- the camera module also includes a lens fixing area.
- the conductive rod 305 of area 302, and the sliding conductive device 304 connected to the conductive rod 305, wherein the conductive rod 305 is connected to the power supply circuit (if the power supply circuit is integrated with the processor inside the terminal device, it can also be understood as conductive
- the rod 305 is connected to the processor) for conducting electricity; the sliding conductive device 304 can move along the conductive rod 305 and is connected to the zoom coil 204 through a lead 303.
- the Lorentz force When the zoom coil 204 is energized, the Lorentz force will be generated under the action of the magnetic field. The Lorentz force pushes the zoom coil 204 to change its position.
- the lead wire 303 with better rigidity is used, so that the sliding conductive device 304 can follow the zoom coil 204 moves while moving, the relative position of the lead 303 remains unchanged, and the stability is better; of course, the lead can also be directly connected to the power supply circuit inside the terminal, but the lead should be reserved for a certain length to ensure that the coil moves away from the power supply circuit At the farthest distance, the lead can still be connected; at this time, during the movement of the coil, the lead has been following the swing, and the stability is relatively poor.
- the rigidity of the lead 303 in this application can drive the sliding conductive device 304; the sliding conductive device 304 can be a sliding ring or any other form, and can move along the conductive rod 305.
- the structure of the soft film lens in the subsequent embodiments is similar to it, and will not be repeated in this application; the lenses in the lens group other than the soft film lens also have a lens fixing area, and the lens and the lens are connected to each other through the lens fixing area.
- the corresponding lens barrel is fixed, but since the outer surface or inner surface of these lenses have no coils, there are no conductive rods, lead wires and other devices in the lens fixing area of these lenses.
- the magnet is an object that can generate a magnetic field, for example, a magnet, a magnet, etc.; the number of first magnets may be more than two, for example, 4 first magnets are located oppositely around the lens group 203, or 6 The first magnet surrounds the lens group 203 relatively.
- Figure 5 shows a schematic diagram of four first magnets (201, 202, 209, and 210) as an example. All the first magnets can be fixed in the annular cylinder 206. ; The subsequent embodiments of this application are described by taking two first magnets as an example.
- the camera module further includes a second magnet 208 located between the first magnet and the first soft film lens.
- the second magnet 208 can be fixed on the lens barrel 207 or integrated inside the lens barrel 207. As shown in Figure 4.
- the second magnet and the first magnet have a one-to-one correspondence, and the structure can be as shown in FIG. 5 (for clarity of illustration, the lens barrel and other structures are not shown in the figure).
- the shape of the first magnet and the second magnet may also be curved shapes, surrounding the soft film lens, and the specific shape is not limited.
- the second magnet 208 has the same polarity direction as the corresponding first magnet 201. As shown in FIG. 6, assuming that the polarity of the side of the first magnet 201 facing the second magnet 208 is the south pole (S pole), then The polarity of the side of the second magnet 208 facing the first magnet is the north pole (N pole); conversely, if the polarity of the side of the first magnet 201 facing the second magnet 208 is N pole, the second magnet 208 faces the first magnet. The polarity of the side of the magnet 201 is the S pole. At this time, the second magnet 208 can converge the magnetic field of the first magnet 201 to enhance the magnetic field. Under the same current, the Lorenz generated by the zoom coil 204 can be increased.
- the amount of deformation of the first soft film lens 2031 is increased.
- the camera module is applied to a small terminal device such as a mobile phone, the current cannot be particularly high, resulting in the limited strength of the Lorentz force, and the first soft film lens 2031 cannot achieve a better zoom effect.
- This embodiment uses the first soft film lens 2031 to achieve a better zooming effect.
- the two magnets 208 realize magnetic field convergence, which can solve this problem.
- a third magnet may also exist between the second soft film lens and the first magnet mentioned below in this application to converge the magnetic field of the first magnet and increase the amount of deformation of the second soft film lens;
- a fourth magnet which is used to converge the magnetic field of the first magnet and increase the amount of deformation of the second soft film lens; the characteristics of the third magnet and the fourth magnet are the same as those of the second magnet.
- the camera module provided in this application can also be applied to terminal devices, such as mobile phones, tablet computers, or automobiles, and used as a camera of a mobile phone or a driving recorder or other camera device in a vehicle-mounted device.
- the camera module can be a conventional camera module or a camera module in the form of a folded optical path; the processor inside the terminal device will process the image information collected by the sensor 205 and analyze the zoom requirements communicated by the user. The zoom requirement drives the camera module to complete the optical zoom.
- the light beam will be converged at the sensor 205 after being incident from the lens group 203.
- the light blocking area of the zoom coil 204 is smaller than that of the first soft film lens 2031 connected to the zoom coil 204 1/4 or 1/3 of the surface area of, the specific value is not limited; in addition, the lens group 203 may also include multiple lenses, for example, 4 or 6 lenses. 4 is taken as an example in FIG. 2.
- the sensor 205 may be an image sensor, for example, a complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS) image sensor, a charge-coupled device (CCD) image sensor, etc.
- CMOS complementary metal oxide semiconductor
- CCD charge-coupled device
- the image returned by the sensor 205 will be a preview image taken by the terminal device. If the user enlarges the preview image, or clicks a zoom button such as 2x or 5x, the processor of the terminal device will get the zoom demand signal, according to the user's input
- the zoom demand signal is used to control the power to the zoom coil 204.
- the power of the zoom coil 204 can come from the power device in the device. For example, if the camera module is used in a mobile phone or a tablet computer, the power can come from a mobile phone or a tablet.
- the electrified coil will generate Lorentz force under the action of the magnetic field to move the coil, thereby squeezing or pulling the first soft film lens 2031 to deform it, thereby changing the focal length and realizing the optical zoom function;
- the amount of power can be continuously changed, and the first soft film lens 2031 can be continuously deformed, thereby realizing a continuous optical zoom function.
- the camera module provided by the present application can realize continuous optical zoom function by arranging the zoom coil on the outer surface or the edge of the inner surface of the first soft film lens, and the real images are collected, and the imaging effect is better; the overall structure It is relatively compact and can be used in terminal devices with limited space such as mobile phones.
- the camera module of the present application has optical zooming capabilities, that is, a single lens can achieve the zooming capabilities of two fixed-focus lenses. For example, a single camera module of this application can achieve continuous changes of 1-2x focal length.
- the prior art requires a combination of a 1x fixed focus lens and a 2x fixed focus lens to achieve a 1-2x zoom effect, and this application is continuous
- the optical zoom captures real images, and the imaging effect is better; further, the dual lens of the present application can achieve the effect of more fixed-focus lenses, can reduce the number of camera modules in the terminal equipment, and can also ensure The optical zoom capability does not decrease.
- the camera module provided by the present application further includes a first compensation coil 701.
- the first compensation coil 701 is located between the two first magnets (201, 202), wherein the lens group 203 Are located in the space formed by the first compensation coil 701; specifically, all the lenses included in the lens group 203 are located in the space formed by the first compensation coil 701, or part of the lenses included in the lens group 203 are located in the first compensation coil 701
- the lens group 203 including 4 lenses as an example, one, two or three lenses may be located in the space formed by the first compensation coil, or all four lenses may be located in the first compensation coil. In the space.
- the first compensation coil 701 When the first compensation coil 701 is energized, it will generate Lorentz force under the action of a magnetic field, which will move the lens group 203 and change the position of the lens group 203, thereby changing the image distance of the camera module and playing a compensation role ( It can also be said to play a focusing role); in addition, the Lorentz force generated by the first compensation coil 701 can also only push a part of the lens in the lens group 203 to move positions, which can also play a compensation role.
- the workflow of the embodiment of the present application is as follows.
- the sensor 205 sends back a preview image taken by the terminal device, and the user clicks a zoom button such as 2x and 5x, then the processor of the terminal device will obtain the zoom demand signal;
- the zoom demand signal given by the user controls the energization of the zoom coil 204.
- the energized coil will generate Lorentz force under the action of the magnetic field, which will deform the first soft film lens 2031, thereby changing the focal length and realizing the optical zoom function;
- the processor will gradually increase the current to the first compensation coil 701 to drive the lens group 203 to move or drive part of the lens in the lens group 203 to move to achieve focus compensation.
- the image signal transmitted by 205 is clear, the processor will stop increasing the current of the first compensation coil 701, and the compensation is completed.
- the first compensation coil 701 is fixed on the lens barrel 207, and the lens group 203 is connected to the lens barrel 207.
- the Lorentz force generated after the first compensation coil 701 is energized will cause the first compensation coil 701 to drive the lens barrel 207 to move.
- the position of the lens in the lens group 203 is changed; moreover, the lens barrel 207 can also play a role of fixing the lens group 203.
- not all of the lenses in the lens group 203 may be connected to the lens barrel 207. For example, if the lens group includes 6 lenses, 4 or 5 of them may be connected to the lens barrel 207, and the specific number is not limited.
- the remaining lens can be connected to the annular barrel 206 by a fixing member or other fixing device; the Lorentz force generated after the first compensation coil 701 is energized will cause the first compensation coil 701 to drive the lens barrel 207 to move, thereby connecting with the lens barrel 207 The part of the lens moves, and the position of the remaining lens remains unchanged.
- the parameters of each lens in the lens group for example, whether a certain lens is a concave lens or a convex lens, the radius of curvature of each lens, etc.
- the distance between the lenses can be determined; after the determination, the focal length of the lens group
- the corresponding relationship between the change value and the displacement value of the lens group 203 can be calculated, and there is a one-to-one correspondence between the focal length change value and the displacement value of the lens group 203; that is, the zoom coil at this time
- the number of turns and single-turn length of the zoom coil 204 and the first compensation coil 701 can be designed in advance, so that the zoom coil The 204 and the first compensation coil 701 are connected in series, and after the current is loaded, the compensation function can be realized while zooming.
- one end of the zoom coil 204 can be connected to one end of the first compensation coil 701, as shown in FIG. 8; the principle of proximity can also be used, which is equivalent to placing the first compensation coil 701 at a position closer to the zoom coil 204.
- the two disconnected and disconnected ports are respectively connected to both ends of the zoom coil 204, as shown in FIG. 9; other connection methods are also possible, which are not limited in this application.
- the camera module may further include a first adjusting coil 1001, which is also located between the two first magnets (201, 202), part of the lens included in the lens group 203 Located in the space formed by the winding of the first adjusting coil 1001, when the first adjusting coil 1001 is energized, it will also generate Lorentz force under the action of a magnetic field, change the position of the lens group 203, and change the image distance of the camera module. Play the role of further adjustment, so that the light beam can be more accurately focused on the sensor 205, and a clearer image can be obtained.
- the first adjustment coil 1001 Since the first adjustment coil 1001 performs fine adjustment on the basis of the zoom coil 204 and the first compensation coil 701, there is no need to apply a large force to the lens group 203. Therefore, under normal circumstances, the first adjustment coil 1001 generates a low The Lenz force is smaller than the Lorentz force generated by the first compensation coil 701. Since the Lorentz force generated by the coil in the magnetic field is related to the number of turns and the length of the coil under the same current application, if the length of the single coil of the coil does not change, the Lorentz force generated by the coil in the magnetic field The force is proportional to the number of turns of the coil. If the number of turns of the coil is constant, the Lorentz force generated in the magnetic field is proportional to the length of the coil's single turn. Therefore, the number of turns of the first adjusting coil 1001 can be less than The number of turns of the first compensation coil 701 or the length of a single turn of the first adjusting coil 1001 may be smaller than the length of a single turn
- the first compensation coil 701 and the first adjustment coil 1001 are disconnected, and the current can be loaded independently. After the adjustment of the zoom coil 204 and the first compensation coil 701 is completed, if the image still cannot meet the definition requirement, the first compensation coil is started. An adjustment coil 1001 makes further adjustments. Normally, since the first compensation coil 701 needs to push the lens group 203 to move a longer distance, the space formed by the winding of the first compensation coil 701 is larger than the space formed by the winding of the first adjustment coil 1001. Therefore, it is located in The number of lenses in the space formed by the winding of the first compensation coil 701 will be greater than the number of lenses in the space formed by the winding of the first adjustment coil 1001.
- the lenses included in the lens group 203 may be partly located in the space formed by the first compensation coil 701, and the remaining part is located in the space formed by the first adjusting coil 1001; for example, the lens group includes four lenses, and three lenses are located in the first compensation coil 701. In the space formed by a compensation coil 701, a lens is located in the space formed by the first adjustment coil 1001.
- the Lorentz force generated by the first compensation coil 701 can push the space formed by the first compensation coil 701
- the three lenses change positions to complete the compensation function; the Lorentz force generated by the first adjusting coil 1001 can push a lens located in the space formed by the first adjusting coil 1001 to change its position to further adjust the camera module; of course it can also Two lenses are located in the space formed by the winding of the first compensation coil 701, and the other two lenses are located in the space formed by the winding of the first adjustment coil 1001. Other arrangements are also possible, which are not limited in this application.
- the camera module includes a lens barrel 207 connected to the annular barrel 206 through a spring or an elastic sheet.
- all lenses or some of the lenses in the lens group 203 are connected to the lens barrel 207, and the first adjusting coil 1001
- the first compensation coil 701 and the first compensation coil 701 are both fixed on the lens barrel; the Lorentz force generated by the first compensation coil 701 will push the first compensation coil 701 to drive the lens barrel 207 to move to compensate; if the image definition is still not satisfied It is required that the first adjusting coil 1001 will be energized, and the Lorentz force generated at this time will push the first adjusting coil 1001 to drive the lens barrel 207 to move, thereby changing the position of the lens connected to the lens barrel 207, and play a role in further adjustment. .
- the lens barrel can also be divided into a first lens barrel 2071 and a second lens barrel 2072, wherein a part of the lenses in the lens group can be connected with the first lens barrel 2071, and the remaining lenses can be connected with the second lens barrel 2072; for example, As shown in FIG. 11, the lens group 203 includes four lenses, of which three lenses are connected to the first lens barrel 2071, and the remaining lens is connected to the second lens barrel 2072; the first lens barrel 2071 and the second lens barrel 2072 are mutually connected. It is not connected, and is connected to the annular barrel 206 through a deformable device (spring or shrapnel, etc.).
- a deformable device spring or shrapnel, etc.
- the first compensation coil 701 is connected to the first lens barrel 2071, and the first adjustment coil 1001 is connected to the second lens barrel 2072. At this time, The Lorentz force generated by the energization of the first compensation coil 701 will push the first compensation coil 701 to drive the first lens barrel 2071 to move, thereby changing the position of the lens connected to the first lens barrel 2071 to compensate; if the image is sharp Still not meeting the requirements, the first adjusting coil 1001 is energized, and the Lorentz force generated at this time will push the first adjusting coil 1001 to drive the second lens barrel 2072 to move, thereby changing the position of the lens connected to the second lens barrel 2072. To further adjust the role.
- the camera module further includes a second adjusting coil 1201, the lens group 203 also includes a second soft film lens 2032, the second adjusting coil 1201 and the soft film of the second soft film lens 2032
- the specific structure is similar to that of the zoom coil 204. It can also be located on the edge of the outer surface of the second soft film lens 2032 and connected to the soft film; it can also be located on the edge of the inner surface of the second soft film lens 2032, that is, located on the second soft film lens. In 2032, it is connected to the soft membrane; please refer to Figure 3.
- the second adjusting coil 1201 When the second adjusting coil 1201 is energized, it will also generate Lorentz force under the action of the magnetic field, pushing the second adjusting coil to move, thereby squeezing or pulling the soft film of the second soft film lens 2032, making the second soft film lens
- the 2032 changes the shape and fine-tunes the focal length of the lens group. As the focal length changes, the image distance will also change, allowing the beam to be more accurately focused on the sensor for further adjustment.
- the light blocking area of the second adjusting coil 1201 in order to prevent the second adjusting coil 1201 from blocking the incidence of the light beam, should also be smaller than 1/4 or 1/ of the surface area of the second soft film lens 2032 connected to the second adjusting coil 1201. 3.
- the specific value is not limited.
- the second adjusting coil 1201 performs fine adjustment on the basis of the zoom coil 204 and the first compensation coil 701, there is no need to apply a large force to the soft film on the second soft film lens 2032. Therefore, the second adjusting coil 1201
- the generated Lorentz force is generally smaller than the Lorentz force generated by the zoom coil 204. Since the Lorentz force generated by the coil in the magnetic field is related to the number of turns and the length of the coil under the same current application, if the length of the single coil of the coil does not change, the Lorentz force generated by the coil in the magnetic field The force is proportional to the number of turns of the coil.
- the Lorentz force generated in the magnetic field is proportional to the length of the coil's single turn, so the number of turns of the second adjusting coil 1201 can be less than that of the zoom
- the number of turns of the coil 204 or the length of a single turn of the second adjusting coil 1201 may be smaller than the length of a single turn of the zoom coil 204.
- the second adjustment coil 1201 and other coils are also disconnected, and the current can be independently loaded. After the adjustment of the zoom coil 204 and the first compensation coil 701 is completed, if the image still cannot meet the definition requirement, the second adjustment will be started. The coil 1201 is further adjusted.
- the second soft film lens may be composed of a soft film wrapped with liquid or gel, or may be composed of a closed space formed by the soft film and the lens wrapped with liquid or gel.
- the camera module further includes a second compensation coil 1301, as shown in FIG. 13, at this time, the lens group 203 also includes The third soft film lens 2033, the second compensation coil 1301 is connected to the soft film of the third soft film lens 2033, and the specific structure is similar to the zoom coil 204 and the second adjustment coil 1201, please refer to FIG. 3, which will not be repeated in this application;
- the second compensation coil 1301 When the second compensation coil 1301 is energized, it will also generate Lorentz force under the action of a magnetic field, change the shape of the third soft film lens 2033, change the focal length of the lens group, and thus change the image distance of the lens group, which plays a role of compensation.
- the lens group 203 does not need to be moved, and the design is simpler.
- the third soft film lens may be composed of a soft film wrapped with liquid or gel; it may also be composed of a closed space formed by the soft film and lens wrapped with liquid or gel.
- the light-blocking area of the second compensation coil 1301 should also be smaller than 1/4 or 1/ of the surface area of the third soft film lens 2033 connected to the second compensation coil 1301. 3. The specific value is not limited.
- the parameters of each lens in the lens group for example, whether a certain lens is a concave lens or a convex lens, the radius of curvature of each lens, etc.
- the corresponding relationship between the focal length change value and the image distance change value can be calculated, and the focal length change value and the image distance change value are one-to-one, that is to say, under the same magnetic field, the force generated by the zoom coil 204 and
- the force generated by the second compensation coil 1301 also has a one-to-one correspondence. Therefore, the number of turns and the length of a single turn of the zoom coil 204 and the second compensation coil 1301 can be designed in advance, so that the zoom coil 204 and the second compensation coil can be combined.
- the coil 1301 is connected in series, and after the current is loaded, the compensation function can be realized while zooming.
- the embodiment of the present application may also include the first adjusting coil 1001 mentioned in the above-mentioned embodiment, as shown in FIG. 14; or include the second The adjusting coil 1201 is shown in FIG. 15; the specific principles and features have been described in detail in the previous embodiments, and will not be repeated in this application.
- the camera module further includes a mirror 1601 for reflecting the input light beam to the lens group 203, and the optical path can be folded to realize a periscope camera module, Reduce the volume of the camera module.
- the specific structure is shown in Figure 16. It should be understood that Figure 16 is a camera module with one of the structures shown in Figure 2, Figure 7-10 and Figure 12-15 as an example of adding a mirror. Schematic diagram; in addition, the coils mentioned in the above embodiments are all connected to the processor, including connecting to the processor through a power supply circuit, the processor controls the power of the coil, and adjusts the zoom and imaging effects of the camera module.
- the lens group further includes a first fixed lens for focusing the received light beam; it may also include a second fixed lens for further focusing the light beam to converge the light beam onto the sensor 205; wherein the light beam may pass through the first
- the first fixed lens, the soft film lens, and the second fixed lens can also be arranged in other ways, which are not limited in this application.
- the lens group can also include more lenses, and the added lenses can further focus the light beam and improve the imaging quality.
- the camera module disclosed in the embodiments of the present application can be used for camera alone or in conjunction with other cameras (such as a fixed focus lens). Of course, multiple camera modules disclosed in the present application can also be used together.
- the specific process is as follows:
- the relationship between the zoom factor and the voltage or current to the corresponding coil can be pre-stored in the processor, for example, corresponding
- the relationship is stored in the form of a table or in the form of a function, and the processor can know the voltage or current value of the corresponding coil according to the required zoom factor; the corresponding coil includes the different coils mentioned in the above-mentioned different device embodiments.
- the zoom coil is energized, and the Lorentz force generated after the zoom coil is energized will push the zoom coil to move, thereby squeezing or pulling the first soft film lens to deform and play the role of changing the focal length.
- the specific workflow of the camera module also includes: 1703, energize the compensation coil, the Lorentz force generated after the compensation coil is energized, used to compensate for the change in the image distance caused by the focal length change, and the degree of image quality degradation caused by .
- the camera module can be a structure as shown in Figures 7-12, the compensation coil is the first compensation coil, and the Lorentz force generated by the first compensation coil will control the lens group or part of the lens in the lens group to complete the movement, thereby Change the image distance of the camera module to achieve a compensation effect; the camera module can also have a structure as shown in Figure 13-15.
- the compensation coil is the second compensation coil, and the Lorentz force generated by the second compensation coil will be The second compensation coil is pushed to move, thereby squeezing the third soft film lens to deform, which can change the image distance of the camera module and play a compensation role.
- the specific work flow also includes: 1704, energize the adjustment coil, and after the adjustment coil is energized, it is used to adjust the image distance of the camera module, so that the beam can be more accurately Focus on the sensor to reduce beam loss.
- the camera module may have the structure shown in Figures 10 and 14, the adjusting coil is the first adjusting coil, and the Lorentz force generated by the first adjusting coil will control the lens group or part of the lens in the lens group to complete the movement, thereby Play the role of further adjusting the image distance; the camera module can also be of the structure shown in Figures 12 and 15, at this time the adjustment coil is the second adjustment coil, and the Lorentz force generated by the second adjustment coil will promote the second adjustment The coil moves, thereby squeezing the second soft film lens to deform and further adjust the image distance.
- the camera module provided in the embodiments of the present application can be used as a separate camera, and can also be applied to devices that need to take photos or videos in different scenarios in fields such as smart phones, tablet computers, and robots.
- the camera module provided by the embodiment of the application can realize the continuous optical zoom function, and the real images are collected, and the imaging effect is better; it is the same as the commonly used solution to realize the zooming ability by stitching multiple fixed-focus lenses
- the camera module of the present application has the optical zoom capability, that is, a single lens can achieve the zoom capability of two fixed focus lenses, and a dual lens can achieve more effects of a fixed focus lens, under the condition that the optical zoom capability remains unchanged ,
- the number of camera modules in the terminal device can be reduced; in addition, multiple camera modules disclosed in the present application can also solve the problem of image quality "out of gear" existing in the splicing of existing fixed-focus lenses.
- An embodiment of the present application provides a camera device, such as a camera or a video camera.
- the camera device includes the camera module provided in the above embodiment and a packaging structure, wherein the camera module module further includes a coil in the camera module
- the connected controller is used to control the energization of the coil; the coil includes the different coils mentioned in the above-mentioned different device embodiments.
- the controller may be an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (Field Programmable Gate Array, FPGA), etc.
- ASIC Application Specific Integrated Circuit
- FPGA Field Programmable Gate Array
- FIG. 19 shows a structural block diagram of a terminal device provided by an exemplary embodiment of the present application.
- the terminal device may be a smart phone. , Tablet computers, smart robots, laptops and other devices that integrate camera or video functions, or vehicles with camera or video functions.
- the terminal device may also be called user equipment, portable terminal, laptop Other names such as terminal, desktop terminal, vehicle terminal, etc.
- the terminal device further includes: a processor 1901 and a memory 1902.
- the processor 1901 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so on.
- the processor 1901 may be implemented in at least one hardware form among digital signal processing (Digital Signal Processing, DSP), FPGA, and Programmable Logic Array (Programmable Logic Array, PLA).
- the processor 1901 may also include a main processor and a coprocessor.
- the main processor is a processor used to process data in the awake state, also called a central processing unit (CPU);
- the coprocessor is A low-power processor used to process data in the standby state.
- the processor 1901 may be integrated with a graphics processing unit (GPU), and the GPU is used for rendering and drawing content that needs to be displayed on the display screen.
- the processor 1901 may also include an artificial intelligence (AI) processor, and the AI processor is used to process computing operations related to machine learning.
- AI artificial intelligence
- the memory 1902 may include one or more computer-readable storage media, which may be non-transitory.
- the memory 1902 may also include high-speed random access memory and non-volatile memory, such as one or more magnetic disk storage devices and flash memory storage devices.
- the non-transitory computer-readable storage medium in the memory 1902 is used to store at least one instruction.
- the terminal device may optionally further include: a peripheral device interface 1903 and at least one peripheral device.
- the processor 1901, the memory 1902, and the peripheral device interface 1903 may be connected by a bus or a signal line.
- Each peripheral device can be connected to the peripheral device interface 1903 through a bus, a signal line, or a circuit board.
- the peripheral device includes: at least one of a camera component 1904, a radio frequency circuit 1905, a display screen 1906, an audio circuit 1907, a positioning component 1908, and a power supply 1909.
- the peripheral device interface 1903 can be used to connect at least one peripheral device related to Input/Output (I/O) to the processor 1901 and the memory 1902.
- the processor 1901, the memory 1902, and the peripheral device interface 1903 are integrated on the same chip or circuit board; in some other embodiments, any one of the processor 1901, the memory 1902, and the peripheral device interface 1903 or The two can be implemented on a separate chip or circuit board, which is not limited in this embodiment.
- the camera assembly 1904 may include the camera module provided in the foregoing embodiment, which is used to collect images or videos, and send the collected images or video information to the processor 1901 for image preview processing or storage.
- the camera assembly 1904 includes a front camera and a rear camera.
- the front camera is set on the front panel of the terminal, and the rear camera is set on the back of the terminal.
- the front camera can use the camera module provided in this application to adapt to the zoom requirements of different scenarios; usually, the rear There may be more than one camera, each of which is the main camera, depth-of-field camera, wide-angle camera, and telephoto camera to realize the fusion of the main camera and the depth-of-field camera to realize the background blur function, and the fusion of the main camera and the wide-angle camera to realize panoramic shooting and virtual Virtual Reality (VR) shooting function or other fusion shooting functions; the rear camera may all use the camera module provided in this application, or part of it may be an existing fixed focus lens, and part of the camera module provided in this application.
- the camera assembly 1904 may also include a flash.
- the radio frequency circuit 1905 is used to receive and transmit radio frequency (RF) signals, also called electromagnetic signals.
- RF radio frequency
- the radio frequency circuit 1905 communicates with a communication network and other communication devices through electromagnetic signals.
- the radio frequency circuit 1905 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals into electrical signals.
- the display screen 1906 is used to display a user interface (UI).
- the UI can include graphics, text, icons, videos, and any combination thereof.
- the display screen 1906 also has the ability to collect touch signals on or above the surface of the display screen 1906.
- the touch signal may be input to the processor 1901 as a control signal for processing.
- the display screen 1906 may also be used to provide virtual buttons and/or virtual keyboards, also called soft buttons and/or soft keyboards.
- the audio circuit 1907 is used to collect the sound waves of the user and the environment, and convert the sound waves into electrical signals and input them to the processor 1901 for processing; or input them to the radio frequency circuit 1905 to implement voice communication.
- the audio circuit 1907 may also include a headphone jack.
- the positioning component 1908 is used to locate the current geographic location of the terminal device to implement navigation or location-based service (LBS).
- LBS location-based service
- the power supply 1909 is used to supply power to various components in the terminal device.
- FIG. 19 does not constitute a limitation on the terminal device, and may include more or fewer components than shown in the figure, or combine certain components, or adopt different component arrangements.
- the program can be stored in a computer-readable storage medium.
- the storage medium mentioned can be a read-only memory, a magnetic disk or an optical disk, etc.
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Abstract
Description
Claims (25)
- 一种摄像模组,其特征在于,所述摄像模组包括两个第一磁体,透镜组,变焦线圈和传感器,所述两个第一磁体分别位于所述透镜组相对的两侧;所述透镜组包括第一软膜透镜;所述变焦线圈与所述第一软膜透镜的软膜相连;其中,所述变焦线圈在通电时,在所述两个第一磁体形成的磁场作用下产生洛伦兹力,改变所述第一软膜透镜的形状,从而改变所述第一软膜透镜的焦距;所述传感器用于接收通过所述透镜组射入的光束。
- 根据权利要求1所述的摄像模组,其特征在于,所述摄像模组还包括一面开口的环形筒,其中,所述传感器固定于所述环形筒内与开口面相对的底面;所述两个第一磁体分别固定于所述环形筒内,所述底面两侧的面上。
- 根据权利要求2所述的摄像模组,其特征在于,所述摄像模组还包括与所述环形筒连接的镜头筒,所述镜头筒与所述环形筒通过弹性装置相连,所述透镜组中至少一个透镜与所述镜头筒相连。
- 根据权利要求3所述的摄像模组,其特征在于,所述第一软膜透镜包括软膜形变区和透镜固定区,所述摄像模组还包括导电杆,滑动导电装置和引线;所述透镜固定区,用于将透镜固定在所述镜头筒上;所述导电杆位于所述透镜固定区,用于导电;所述滑动导电装置位于所述导电杆上;所述引线分别连接所述变焦线圈和所述滑动导电装置。
- 根据权利要求3或4所述的摄像模组,其特征在于,所述摄像模组还包括位于所述第一软膜透镜和所述第一磁体之间的第二磁体,所述第二磁体与所述第一磁体一一对应,所述第二磁体与对应的所述第一磁体的磁场方向相同。
- 根据权利要求5所述的摄像模组,其特征在于,所述第二磁体固定于所述镜头筒上。
- 根据权利要求1-6任一项所述的摄像模组,其特征在于,所述摄像模组还包括第一补偿线圈,所述第一补偿线圈位于所述两个第一磁体之间,其中,所述第一补偿线圈在通电时,在磁场作用下产生洛伦兹力,改变所述透镜组的位置,从而改变所述摄像模组的像距。
- 根据权利要求7所述的摄像模组,其特征在于,所述变焦线圈和所述第一补偿线圈串联。
- 根据权利要求8所述的摄像模组,其特征在于,所述摄像模组还包括第一调节线圈,其中,所述第一调节线圈位于所述两个第一磁体之间,所述第一调节线圈的匝数少于第一补偿线圈的匝数,或者所述第一调节线圈的单圈长度小于第一补偿线圈的单圈长度。
- 根据权利要求8所述的摄像模组,其特征在于,所述摄像模组还包括第二调节线圈,所述透镜组还包括第二软膜透镜,所述第二调节线圈与所述第二软膜透镜的软膜相连;其中,所述第二调节线圈在通电时,在磁场作用下产生洛伦兹力,改变所述第二软膜透镜的形状,使所述光束聚焦于所述传感器上。
- 根据权利要求1-6任一项所述的摄像模组,其特征在于,所述摄像模组还包括第二补偿线圈,所述透镜组还包括第三软膜透镜,所述第二补偿线圈与所述第三软膜透镜的软膜相连;其中,所述第二补偿线圈在通电时,在磁场作用下产生洛伦兹力,改变所述第三软膜透镜的形状,从而改变所述摄像模组的像距。
- 根据权利要求11所述的摄像模组,其特征在于,所述摄像模组还包括位于所述第三软膜透镜和所述第一磁体之间的第三磁体,所述第三磁体与第一磁体一一对应,所述第三磁体与对应的所述第一磁体的磁场方向相同。
- 根据权利要求11所述的摄像模组,其特征在于,所述变焦线圈和所述第二补偿线圈串联。
- 根据权利要求13所述的摄像模组,其特征在于,所述摄像模组还包括第一调节线圈,所述第一调节线圈位于所述两个第一磁体之间,其中,所述第一调节线圈在通电时,在磁场作用下产生洛伦兹力,改变所述透镜组的位置,从而改变所述摄像模组的像距。
- 根据权利要求13所述的摄像模组,其特征在于,所述摄像模组还包括第二调节线圈,所述透镜组还包括第二软膜透镜,所述第二调节线圈与所述第二软膜透镜的软膜相连;其中,所述第二调节线圈的匝数少于第二补偿线圈的匝数,或者所述第二调节线圈的单圈长度小于第二补偿线圈的单圈长度。
- 根据权利要求1-15任一项所述的摄像模组,其特征在于,所述摄像模组还包括反射镜,用于将输入的光束反射给所述透镜组。
- 根据权利要求1-16任一项所述的摄像模组,其特征在于,与软膜透镜中的软膜相连的线圈的挡光面积小于所述软膜透镜中与所述线圈相连的表面面积的1/4。
- 根据权利要求1-17任一项所述的摄像模组,其特征在于,软膜透镜由软膜包裹液体或凝胶构成;或者软膜透镜由软膜和透镜构成的封闭空间中包裹有液体或凝胶构成。
- 根据权利要求1-18任一项所述的摄像模组,其特征在于,所述摄像模组还包括控制器,用于根据传感器发送的信息,生成控制信息,控制线圈的通电量。
- 一种终端设备,其特征在于,所述终端设备包括如权1-19中任一项所述的摄像模组以及处理器和显示器,其中,所述摄像模组用于采集图像信息,所述处理器用于处理所述图像信息,控制所述显示器显示采集的图像。
- 根据权利要求20所述的终端设备,其特征在于,所述终端设备包括的摄像模组为多个,其中,至少一个摄像模组为如权1-19中任一项所述的摄像模组。
- 一种摄像方法,其特征在于,所述方法应用于如权1-19中任一项所述的摄像模组,包括:接收变焦指令,根据所述变焦指令,确定对所述变焦线圈的通电量;给所述变焦线圈通电,其中,所述变焦线圈通电后产生的洛伦兹力会推动所述变焦线圈移动,从而使所述第一软膜透镜发生形变,起到改变焦距的作用。
- 根据权利要求22所述的方法,其特征在于,所述终端设备包括的摄像模组为多个,其中,至少一个摄像模组为如权1-19中任一项所述的摄像模组,在接收变焦指令之后,所述方法还包括:根据接收到的变焦指令,调用对应的摄像模组。
- 一种可读存储介质,其特征在于,所述可读存储介质存储指令,当所述指令在终端设备上运行时,使得所述终端设备执行如权利要求22或23所述的方法。
- 一种包含指令的计算机程序产品,其特征在于,当在终端设备上运行时,使得终端设备执行如权利要求22或23所述的方法。
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CN114114484A (zh) * | 2021-11-09 | 2022-03-01 | 珠海格力电器股份有限公司 | 镜头、变焦镜头和终端以及镜头变焦的控制方法 |
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