CN114070966B - Camera module and terminal equipment - Google Patents

Camera module and terminal equipment Download PDF

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Publication number
CN114070966B
CN114070966B CN202010770187.9A CN202010770187A CN114070966B CN 114070966 B CN114070966 B CN 114070966B CN 202010770187 A CN202010770187 A CN 202010770187A CN 114070966 B CN114070966 B CN 114070966B
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CN
China
Prior art keywords
lens
module
lens module
conductive
adjustable
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Active
Application number
CN202010770187.9A
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Chinese (zh)
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CN114070966A (en
Inventor
戎琦
袁栋立
陈钧
尹跃广
王宇翔
沈倩倩
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Ningbo Sunny Opotech Co Ltd
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Ningbo Sunny Opotech Co Ltd
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Application filed by Ningbo Sunny Opotech Co Ltd filed Critical Ningbo Sunny Opotech Co Ltd
Priority to CN202010770187.9A priority Critical patent/CN114070966B/en
Priority to PCT/CN2021/107584 priority patent/WO2022028248A1/en
Priority to CN202180059470.3A priority patent/CN116194816A/en
Publication of CN114070966A publication Critical patent/CN114070966A/en
Application granted granted Critical
Publication of CN114070966B publication Critical patent/CN114070966B/en
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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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • 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
    • 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

Abstract

The application discloses module and terminal equipment make a video recording, the module of making a video recording includes sensitization subassembly and camera lens subassembly, camera lens subassembly includes first lens module, adjustable lens module, second lens module and lens cone, first lens module installs in the up end of lens cone, adjustable lens module and second lens module install in the lens cone, the lens cone sets up on sensitization subassembly, thereby first lens module, adjustable lens module and second lens module keep in proper order in sensitization subassembly's sensitization route along the direction of light inlet, camera lens subassembly is still including locating the conductive part on the lens cone, conductive part is with adjustable lens module and sensitization subassembly conductive connection, adjustable lens module is suitable for changing its optical characteristic according to sensitization subassembly's electrical signal, thereby realize the focusing of making a video recording the module.

Description

Camera module and terminal equipment
Technical Field
The application relates to the technical field of electronic equipment, in particular to a camera module and terminal equipment.
Background
With the popularization of mobile terminal devices, related technologies of camera modules applied to mobile terminal devices have been rapidly developed. In the field of consumer electronics, such as in the field of smartphones, a front-facing camera module is an indispensable component. The front camera module and the display screen of the terminal equipment are arranged on the same side and used for meeting the requirements of consumers on self-timer and the like. Consumer pursuit of screen occupancy has become a trend since the full screen concept was proposed. However, the ever-increasing "screen duty ratio" places increasing demands on the structure and arrangement of the front camera modules. In order to reduce the influence of the front camera module on the screen duty ratio, the following are common solutions.
The first solution thinking is to hide the front camera module in the shell, and expose the camera module when the camera module is used. For example, the telescopic camera module is adopted, when the camera function is needed, the front camera module can extend out of the terminal equipment to shoot, after shooting is completed, the camera module can retract into the shell of the terminal equipment, however, the camera module is easily damaged by external impact in the continuous telescopic process, and the maintenance difficulty and the replacement difficulty of the telescopic front camera module are higher. For example, when the camera shooting function is needed, the front camera shooting module is installed on the shell, the camera shooting module is exposed by moving the display screen or the shell, so that shooting can be performed, when camera shooting is not needed, the display screen or the shell is moved to the original position, and the camera shooting module is hidden.
The second solution is to provide a through hole on the display screen of the terminal device. Some manufacturers choose to set up a U-shaped hole at the top end of the display screen of the terminal equipment, and place sensing equipment such as a front-end camera module and a receiver in the U-shaped hole, wherein the front-end camera module is the largest in volume in the front-end sensor, and generally needs a larger U-shaped hole, which has larger influence on the screen occupation ratio. In order to reduce the influence of the opening on the screen ratio, some manufacturers change the U-shaped holes into water drops, but the opening cannot be smaller due to the limitations of the structure of the front camera module and the screen opening process.
Some manufacturers also propose a technical scheme of an open-pore screen, which is usually matched with an under-screen camera module to achieve the purpose of improving the screen occupation ratio. The open pore screen is characterized in that a part of the structure of the display screen is removed to form a light window capable of transmitting visible light, and the camera shooting module is arranged below the light window, so that the screen occupation ratio of the terminal equipment is improved while the front camera shooting of the terminal equipment is realized. In the scheme of "trompil screen", packaging structure is compacter and safe, and camera module and display screen can not become easily damaged parts, compares in structures such as U type hole or water droplet hole moreover, and its trompil size is littleer and more pleasing to the eye.
Even if the ' perforated screen ' structure is adopted, the size of the perforated is at least more than 4.5mm, and the requirement that the perforated screen ' is reduced as much as possible, which is expected by consumers, is difficult to meet, so that the screen duty ratio is improved to the greatest extent. In addition, to cope with the requirement that the perforated screen is designed as a small hole, the camera module needs to be improved in structure and optical design, and these improvements can cause weakening of other functions of the camera module, such as a stray light preventing function of the camera module.
In addition, most camera modules of mobile phones use voice coil motors to realize focusing, but the disadvantage of using voice coil motors to realize automatic focusing is that the camera modules have large volume, complex structure and complex processing technology, and magnetic interference can be generated when a plurality of motors exist simultaneously, and the problem of heat dissipation needs to be considered. Therefore, how to reduce the aperture of the 'aperture screen' as much as possible, and simultaneously, make the front camera module not affected by stray light, magnetic field, gravity and the like, realize automatic focusing, and improve imaging quality is a difficult problem to be solved in the market at present.
Disclosure of Invention
An object of the present application is to provide a small-sized adjustable-focus camera module.
In order to achieve the above object, the present application provides a camera module, including sensitization subassembly and camera lens subassembly, the camera lens subassembly includes first lens module, adjustable lens module, second lens module and lens cone, first lens module install in the up end of lens cone, adjustable lens module and second lens module install in the lens cone, the lens cone sets up on the sensitization subassembly, thereby first lens module adjustable lens module and second lens module keep in proper order in the sensitization route of sensitization subassembly along the direction of light inlet, the camera lens subassembly still includes and locates conductive part on the lens cone, conductive part will adjustable lens module with sensitization subassembly conductive connection, adjustable lens module is suitable for according to the electrical signal of sensitization subassembly changes its optical characteristic, thereby realizes the focusing of camera module.
Further, the inner wall of the lens barrel is provided with a mounting table for mounting the adjustable lens, the adjustable lens module is arranged on the upper end face of the mounting table, the upper end face of the adjustable lens module is suitable for being deformed when an electric signal changes so as to realize focusing, a gap is formed between the upper end face of the adjustable lens module and the lower end face of the first lens module, and a gap is formed between the side face of the adjustable lens module and the inner wall of the lens barrel.
Further, the conductive part comprises two conductive pieces which are separated from each other, the outer surface of the lens barrel is provided with two laser grooves, and the two conductive pieces are respectively arranged in the two laser grooves through a laser direct forming process.
Further, the upper end face of the lens barrel is provided with two welding disc grooves, the welding disc grooves face the side face of the adjustable lens module and are provided with openings, the lens barrel further comprises welding discs arranged in the welding disc grooves, each laser groove is communicated with one welding disc groove, the conducting piece in the laser groove is in conductive connection with the welding disc in the welding disc groove, and the positive electrode connecting end and the negative electrode connecting end of the adjustable lens module are respectively in conductive connection with the corresponding welding disc in the welding disc groove through electric connection wires.
Further, the conductive part comprises two conductive pieces which are separated from each other, the conductive pieces are arranged in the side wall of the lens barrel through an in-mold injection molding process, and two ends of the conductive pieces are exposed out of the lens barrel.
Further, the upper end face of the lens barrel is provided with a plurality of dispensing grooves, the dispensing grooves extend downwards from the upper end face of the lens barrel, one side, facing the adjustable lens module, of each dispensing groove is provided with an opening, and the bottom face of each dispensing groove is higher than or lower than the upper end face of the mounting table.
Further, the outer frame of the adjustable lens module is rectangular, four dispensing grooves are formed in the upper end face of the lens barrel, each dispensing groove is opposite to one side wall of the adjustable lens module, the dispensing grooves deviate from the central line of the side wall of the adjustable lens module opposite to the dispensing grooves, the bottom face of one dispensing groove is higher than the upper end face of the mounting table, and the bottom faces of the other three dispensing grooves are lower than the upper end face of the mounting table.
Further, the outer frame of the adjustable lens module is rectangular, four dispensing grooves are formed in the upper end face of the lens barrel, each dispensing groove is opposite to one vertex of the adjustable lens module, the bottom face of one dispensing groove is higher than the upper end face of the mounting table, and the bottom faces of the other three dispensing grooves are lower than the upper end face of the mounting table.
Further, the first lens module includes a first lens having a first surface located at an object side and a second surface located at an image side, a central region of the first surface is convex to the object side to form a protrusion, the first surface further has a structural region surrounding the protrusion, a top surface of the protrusion forms an optically effective region for imaging, and a sidewall of the protrusion connects the optically effective region and the structural region.
Further, the first lens is made of glass, the diameter of the protruding portion is not more than 1 mm-2.5 mm, the height of the protruding portion is not less than 0.3 mm-1.2 mm, and the included angle between the side wall of the protruding portion and the optical axis of the first lens is smaller than 15 degrees.
Further, the first lens module further includes a light absorbing member disposed around the sidewall of the protrusion, and a tip of the light absorbing member extends to a height not lower than the sidewall of the protrusion.
Further, the light absorbing member is disposed closely to the side wall of the protruding portion, the light absorbing member has a first side surface close to the side wall of the protruding portion, a second side surface far away from the side wall of the protruding portion, and a third surface connecting the top end of the first side surface and the top end of the second side surface, the top end of the first side surface is lower than the top end of the second side surface, and at least one section of the third surface is an inclined surface.
Further, the top ends of the first side surface and the second side surface extend to a height not lower than the side wall of the protruding portion, and the third surface is roughened and/or is plated with an anti-reflection light absorption layer.
Further, the first lens is connected to the upper end face of the lens barrel through an adhesive, the first lens is kept on the lens barrel after the adhesive is cured, and the relative position of the first lens module and the lens barrel is determined by an active calibration step.
Further, the sensitization subassembly includes circuit board, sensitization chip, filter element and camera lens base, the sensitization chip is located on the circuit board and with circuit board conductive connection, the camera lens base sets up on the circuit board, the camera lens subassembly passes through the camera lens base is kept in sensitization chip top, the filter element passes through the camera lens base is kept between the camera lens subassembly with between the sensitization chip, the lens cone sets up the up end of camera lens base, the sensitization subassembly still includes and locates the mirror seat conductive part on the camera lens base, the mirror seat conductive part will conductive part with circuit board conductive connection.
Further, the conductive part comprises two mutually separated conductive parts, the outer surface of the lens barrel is provided with two laser grooves, the two conductive parts are respectively arranged in the two laser grooves through a laser direct forming process, the conductive part of the lens base comprises two mutually separated conductive parts of the lens base, the outer surface of the lens base is provided with two laser grooves of the lens base, the two conductive parts of the lens base are respectively arranged in the two laser grooves of the lens base through a laser direct forming process, the first ends of the conductive parts of the lens base are respectively and electrically connected with the second ends of the conductive parts of the two conductive parts of the lens base, the second ends of the conductive parts of the lens base are respectively and electrically connected with the circuit board, and the first ends of the conductive parts of the two conductive parts are respectively and electrically connected with the adjustable lens module.
Further, adjustable lens module includes piezoelectric film, diaphragm, flexible transparent film, lens main part and the glass basic unit that sets gradually along the direction of light entering, adjustable lens module still includes encircleing the elasticity basement of lens main part week side, the semi-flexible transparent film of elasticity the diaphragm with the limit of piezoelectric film is supported by the elasticity basement, the piezoelectric film middle part has the light region in order to allow light to pass through, the diaphragm is used for limiting the imaging scope, the glass basic unit is used for supporting the lens main part, piezoelectric film is suitable for producing deformation when letting in the electric current, be suitable for the extrusion when piezoelectric film deformation flexible transparent film and the lens main part, so that the up end of lens main part forms the sphere, thereby realizes focusing.
The application also provides terminal equipment, which comprises the camera module.
Further, the terminal device comprises a display screen with an opening, and the protruding part of the camera module is embedded into the opening.
Other technical features and advantages of the present application are further described in the following detailed description.
Drawings
FIG. 1 is a schematic diagram of one embodiment of a camera module of the present application;
FIG. 2 is a schematic diagram of another embodiment of a camera module of the present application;
FIG. 3 is a schematic view of an embodiment of a lens barrel of an imaging module of the present application;
FIG. 4 is a schematic diagram of one embodiment of a Tlens;
FIG. 5 is a partial schematic view of one embodiment of a camera module of the present application;
FIG. 6 is a schematic view of an embodiment of a lens barrel of an imaging module of the present application;
fig. 7 is a schematic view of another embodiment of a lens barrel of an image capturing module of the present application;
FIG. 8 is a top view of one embodiment of an imaging module of the present application, with the first lens module not shown;
FIG. 9 is a top view of another embodiment of an imaging module of the present application, with the first lens module not shown;
fig. 10 is a schematic view of an embodiment of a lens barrel of an image capturing module of the present application;
FIG. 11 is a partial enlarged view of one embodiment of a lens barrel of an imaging module of the present application;
FIG. 12 is a schematic view of one embodiment of a first lens of the present application;
FIG. 13 is a schematic view of one embodiment of a first lens of the present application, shown inserted into an aperture of a display screen;
FIG. 14 is a schematic view of another embodiment of a first lens of the present application;
FIG. 15 is a schematic view of one embodiment of a first lens of the present application, shown inserted into an aperture of a display screen;
FIG. 16 is a schematic view of an embodiment of a first lens module of the camera module of the present application;
FIG. 17 is a schematic view of an embodiment of a light absorbing member of the camera module of the present application;
FIG. 18 is a schematic diagram of the x-axis, y-axis, z-axis, u-axis, v-axis, w-axis during an active calibration step;
fig. 19 is a schematic diagram of an embodiment of a terminal device of the present application.
In the figure:
1. a first lens module; 100. a first lens; 111. a protruding portion; 1111. a top surface; 1112. a sidewall; 112. a structural region; 120. a light absorbing member; 121. a first side; 122. a second side; 123. a third surface;
2. an adjustable lens module; 2A, tlens lenses; 21. a glass substrate; 22. a lens body; 23. a flexible transparent film; 24. a piezoelectric film; 25. a diaphragm; 26. an elastic substrate;
3. a second lens module; 31. a second lens;
4. a lens barrel; 41. a mounting table; 42. a laser groove; 43. a pad groove; 44. a bonding pad; 45A/45B, dispensing groove; 40. a through hole; 5. a conductive portion; 51. a conductive member;
6. a photosensitive assembly; 61. a circuit board; 62. a photosensitive chip; 63. a lens mount; 64. a filter element; 65. a lens base conductive part; 651. a lens base conductive member;
7. A display screen; 71. opening holes;
8. and a cover plate.
Detailed Description
The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
In the description of the present application, it should be noted that, for the azimuth words such as "center", "lateral", "longitudinal", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are indicated based on the azimuth or positional relationships shown in the drawings, only for convenience of description and simplification of description, and are not to be construed as limiting the specific protection scope of the present application, but rather to indicate or imply that the device or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth.
It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.
The application provides a module of making a video recording, it is suitable for as the module of making a video recording under the screen and uses, the display screen that specially adapted has the aperture makes the display screen that has the aperture satisfy the demand of comprehensive screen on the one hand, on the other hand, makes a video recording the module and can obtain sufficient external light in order to satisfy the requirement of light inflow.
As shown in fig. 1, the image pickup module of the present application includes a photosensitive assembly 6 and a lens assembly disposed on the photosensitive assembly 6, the lens assembly includes a first lens module 1, an adjustable lens module 2, a second lens module 3 and a lens barrel 4, the first lens module 1 is mounted on an upper end surface of the lens barrel 4, the adjustable lens module 2 and the second lens module 3 are mounted in the lens barrel 4, and the lens barrel 4 is disposed on the photosensitive assembly 6, so that the first lens module 1, the adjustable lens module 2 and the second lens module 3 sequentially maintain a photosensitive path of the photosensitive assembly 6 along a light-entering direction. The lens assembly further comprises a conductive part 5 arranged on the lens barrel 4, the conductive part 5 is used for electrically connecting the adjustable lens module 2 with the photosensitive assembly 6, and the adjustable lens module 2 is suitable for changing the optical characteristics of the adjustable lens module according to the signals of the photosensitive assembly 6, so that the focusing of the camera module is realized.
The camera module is provided with the adjustable lens module 2 in the lens barrel 4, so that the damage of the adjustable lens module 2 can be prevented. The structure of the adjustable lens module 2 is more complex than that of a common lens, the structure is more sensitive under the condition that no outer frame is protected, and structures (such as gold wires, welding pins and the like) for conducting connection are arranged around the adjustable lens module 2, if the structures are directly exposed outside the lens barrel and are very easy to damage, the normal use of the adjustable lens module 2 can be influenced, the adjustable lens module 2 is arranged in the lens barrel 4, the protection of the adjustable lens module 2 can be realized on the premise that other components are not added, and the service life of the adjustable lens module 2 is prolonged.
The camera module is beneficial to reducing the size of the camera module and increasing the light inlet amount by arranging the first lens module 1 on the upper end surface of the lens barrel 4. The design of the first lens module 1 arranged on the upper end face of the lens barrel 4 allows the optical effective area of the first lens module 1 to be directly embedded into the light inlet of the end point device, so that the space occupied by the camera module is reduced, and the light inlet of the camera module is increased. If the first lens module 1, the adjustable lens module 2 and the second lens module 3 are all disposed in the lens barrel, the size and weight of the lens barrel tend to increase, and the upper end surface of the lens barrel 4 is used to support the first lens module 1, a part of the lens barrel surrounding the first lens module 1 can be omitted, which is advantageous for the reduction of the size and weight of the lens barrel. The lens of the first lens module 1 may be a plastic or glass lens, which is not easy to be damaged, and the normal use of the first lens module 1 is not affected basically when the lens is arranged outside the lens barrel 4.
It can be understood that the middle part of the lens barrel 4 has a through hole 40 penetrating through the upper and lower end surfaces, the adjustable lens module 2 and the second lens module 3 are disposed in the through hole 40, and the adjustable lens module 2 is located at the object side of the second lens module 3. In some embodiments, the second lens module 3 includes a plurality of second lenses 31, each second lens 31 being disposed in turn within the through hole 40 of the lens barrel 4.
The conductive portion 5 may be provided on the lens barrel 4 by an in-mold injection process or a laser direct structuring process or the like. It is understood that the conductive portion 5 includes two conductive members 51 separated from each other, and the two conductive members 51 are respectively used to realize conductive connection of the positive electrode and the negative electrode.
The photosensitive assembly 6 comprises a circuit board 61, a photosensitive chip 62, a lens base 63 and a filter element 64. The photosensitive chip 62 is disposed on the circuit board 61 and electrically connected to the circuit board 61, the lens mount 63 is disposed on the circuit board 61, the lens assembly is held above the photosensitive chip 62 by the lens mount 63, the filter element 64 is held between the lens assembly and the photosensitive chip 62 by the lens mount 63, and the lens barrel 4 is disposed on an upper end face of the lens mount 63. As shown in fig. 1, the photosensitive assembly 6 further includes a lens holder conductive portion 65 disposed on the lens base 63, and the lens holder conductive portion 65 electrically connects the conductive portion 5 with the circuit board 61. The lens holder conductive part 65 includes two lens holder conductive members 651 separated from each other, and the two lens holder conductive members 651 are respectively used for realizing conductive connection of the positive electrode and the negative electrode. The first end of each mirror base conductive member 651 is electrically connected to a conductive member 51, and the second end of each mirror base conductive member 651 is electrically connected to circuit board 61.
In some embodiments, the conductive part 5 is formed on the lens barrel 4 through an in-mold injection process, that is, when the lens barrel 4 is molded, the conductive member 51 is preset in an injection mold, then the raw material is injected into the mold, and after cooling and demolding, the conductive member 51 is arranged inside the lens barrel 4, as shown in fig. 2. The in-mold injection molding process belongs to the prior art, and the detailed description of the specific implementation of the in-mold injection molding process is omitted. The cost of setting the conductive piece 51 by adopting the in-mold injection molding process is low, and other parts of the conductive piece 51 except for the connection points at the two ends are exposed and are wrapped inside the plastic piece, so that the conductive piece 51 is not easy to damage and is not easy to be influenced by external environment. The exposed ends of conductive member 51 are respectively adjacent to lens holder conductive member 651 and adjustable lens module 2 to facilitate conductive connection of conductive member 51 to lens holder conductive member 651 and adjustable lens module 2. As shown in fig. 2, the first end of the conductive member 51 extends into a pad groove located on the upper end surface of the lens barrel 4 and is electrically connected to the pad in the pad groove, and the adjustable lens module 2 is electrically connected to the pad, so that the conductive member 51 is electrically connected to the adjustable lens module 2.
Similarly, the lens holder conductive portion 65 may be formed on the lens base 63 by an in-mold injection molding process, as shown in fig. 2, in which a first end of the lens holder conductive portion 65 is exposed from an upper end surface of the lens base 63 and a second end is exposed from a bottom of the lens base 63. The lens barrel 4 is arranged on the upper end face of the lens base 63, the first end of the lens base conductive member 651 and the conductive member 51 can be in conductive connection through conductive silver paste, and the second end of the lens base conductive member 651 and the circuit board 61 can also be in conductive connection through conductive silver paste.
In other embodiments, the conductive portion 5 is formed on the side wall of the lens barrel 4 by a laser direct structuring process. As shown in fig. 3, the outer surface of the lens barrel 4 has two laser grooves 42, and only one laser groove 42 is shown in fig. 3. The two conductive members 51 are respectively disposed in the two laser grooves 42 through a laser direct structuring process, and the conductive members 51 are not shown in fig. 3. The conductive piece 51 is arranged by adopting a laser direct forming process, which is beneficial to reducing the overall size of the lens assembly, and can also avoid the influence of other metals in the camera module on the conductive piece 51. Preferably, the depth of the laser groove 42 is no more than 20 μm to 30 μm and the width is no less than 60 μm. Preferably, one end of the laser groove 42 extends from the outer side surface to the upper side surface of the lens barrel 4 and extends up to the edge of the through hole 40 located at the upper side surface of the lens barrel 4, so as to facilitate conductive connection with the adjustable lens module 2 disposed in the through hole 40, and the other end of the laser groove 42 extends down to the lower end of the lens barrel 4. The first end of the conductive member 51 and the adjustable lens module 2 can be electrically connected through gold wires and other structures, and the second end of the conductive member 51 and the circuit board 61 can be electrically connected through the mirror base conductive member 651, so that the photosensitive assembly 6 and the adjustable lens module 2 can be electrically connected through the conductive member 51. Preferably, two ends of the conductive member 51 in one laser groove 42 are respectively connected with the photosensitive assembly 6 and the positive electrode connecting end of the adjustable lens module 2 in a conductive manner, and two ends of the conductive member 51 in the other laser groove 42 are respectively connected with the photosensitive assembly 6 and the negative electrode connecting end of the adjustable lens module 2 in a conductive manner.
Similarly, the lens base conductive portion 65 may be formed on the lens base 63 by a laser direct structuring process. The outer surface of the lens base 63 is provided with two lens base laser grooves, and the two lens base conductive members 651 are respectively arranged in the two lens base laser grooves through a laser direct forming process. The first end of the lens holder conductive member 651 extends to the upper end surface of the lens holder 63, and the second end extends to the lower end of the lens holder 63. The lens barrel 4 is provided on an upper end surface of the lens mount 63, and an adhesive is provided between a lower end surface of the lens barrel 4 and the upper end surface of the lens mount 63, so that the lens barrel 4 is connected to the lens mount 63 by the adhesive. Meanwhile, in order to realize the conductive connection between the conductive member 51 and the lens holder conductive member 651, the lower ends of the two laser grooves 42 of the lens barrel 4 are respectively close to the upper ends of the two lens holder laser grooves of the lens base 63, and conductive silver paste is arranged between the corresponding laser grooves 42 and the lens holder laser grooves, so that the second end of the conductive member 51 is in conductive connection with the first end of the lens holder conductive member 651. The lower end of the mirror base laser groove is close to the electrode connection end of the circuit board 61, and conductive silver paste is arranged between the lower end of the mirror base laser groove and the electrode connection end of the circuit board 61, so that the second end of the mirror base conductive piece 651 is in conductive connection with the circuit board 61. It will be appreciated that the conductive silver paste may be replaced by other conductive materials, which are not limited in this application.
When the conductive piece 51 or the lens base conductive piece 651 is arranged by adopting the in-mold injection molding process, the conductive connecting end of the conductive piece can be arranged on the inner side surface of the lens barrel 4 or the lens base 63 so as to be convenient for conducting connection with the inner side part of the lens barrel 4 or the lens base 63, and when the in-mold injection molding process is adopted, the circuit is arranged in the injection molding material, is not easy to be influenced by external environment, and has relatively better stability. The conductive connecting end of the conductive member 51 or the lens holder conductive member 651 is not easy to be arranged on the inner side surface of the lens barrel 4 or the lens holder 63 by adopting laser direct molding, but the circuit arrangement can be more conveniently modified by adopting a laser direct molding process so as to adapt to actual demands.
Of course, instead of the conductive silver paste, a soldering method may be used to realize the conductive connection between the conductive member 51 and the mirror base conductive member 651, and the conductive connection between the mirror base conductive member 651 and the circuit board 61. Specifically, a lens barrel welding pin (not shown in the figure) is arranged on the lower end surface of the lens barrel 4, the lens barrel welding pin is electrically connected with the conductive member 51, a lens seat bonding pad (not shown in the figure) is arranged on the upper end surface of the lens base 63, the lens seat bonding pad is electrically connected with the lens seat conductive member 651, and after the lens barrel 4 is mounted on the lens base 63, the lens barrel welding pin is electrically connected with the lens seat bonding pad; the lower end surface of the lens mount 63 is provided with a lens mount soldering pin (not shown in the figure), the lens mount soldering pin is electrically connected with the lens mount conductive member 651, the upper end surface of the circuit board 61 is provided with a circuit board pad (not shown in the figure), and after the lens mount 63 is mounted on the circuit board 61, the lens mount soldering pin is electrically connected with the circuit board pad. The materials of the lens barrel welding pin and the lens seat welding pin can be lead-containing solder or lead-free low-temperature molten solder, the materials of the lens barrel welding pin and the lens seat bonding pad are the same, and the materials of the lens seat welding pin and the circuit board bonding pad are the same. After the lens cone welding pin is welded with the lens seat bonding pad and the lens seat welding pin is welded with the circuit board bonding pad, conductive connection is realized, fixed connection is also realized, and the structural stability of the camera module is improved.
There are various embodiments of the adjustable lens module 2, such as a liquid lens, a liquid crystal lens, a Tlens (Tuneablelens) lens, and the like. Those skilled in the art will appreciate that: the principle of the liquid lens is that a closed bag body is filled with liquid substances, and the bag body is extruded by a driving device to deform the liquid lens, so that the optical characteristics of the liquid lens are changed, and focusing is realized; the principle of the liquid crystal lens is that liquid crystal molecules in the liquid crystal lens are utilized to generate different deflection angles under the control of voltages with different intensities, so that lenses with different focal lengths can be simulated to realize focusing of the camera module; the principle of the Tlens lens is to change the shape of a lens body made of a polymer by using a piezoelectric actuator, thereby changing the optical characteristics of the Tlens lens and realizing focusing.
In some embodiments, the adjustable lens module 2 is deformed to perform a focusing function. In these embodiments, a certain clearance needs to be reserved around the adjustable lens module 2, so as to avoid that the adjustable lens module 2 is pressed against surrounding components when deformed, thereby affecting the deformation effect or damaging the surrounding components. In other words, a clearance needs to be provided between the deformation surface of the adjustable lens module 2 and the surrounding components. It will be appreciated that the adjustable lens module 2 may be deformed only upward or only downward, or may be deformed both upward and downward, and of course, when the adjustable lens module 2 is deformed upward or downward, the side surface of the adjustable lens module 2 will be deformed accordingly, that is, the side surface is also a deformed surface, so that a gap is also required between the side surface of the adjustable lens module 2 and the inner wall of the lens barrel 4.
In some preferred embodiments, the tunable lens module 2 is a Tlens, which deforms when the current or voltage it receives changes, so that the optical characteristics are changed. Fig. 4 provides one embodiment of a Tlens lens 2A, it being understood that this does not limit the need for the Tlens lens of the present application to have the structure described in this embodiment and the figures. As shown in fig. 4, the Tlens lens 2A includes a piezoelectric film 24, a diaphragm 25, a flexible transparent film 23, a lens body 22, and a glass base layer 21, which are sequentially disposed in the light-incoming direction, and the Tlens lens 2A further includes an elastic substrate 26 surrounding the peripheral side of the lens body 22, and the edges of the elastic semi-flexible transparent film 23, the diaphragm 25, and the piezoelectric film 24 are supported by the elastic substrate 26. The piezoelectric film 24 may be ring-shaped so as to form a light passing region in the middle thereof to allow light to pass therethrough. The diaphragm 25 is used to limit the imaging range. The glass base layer 21 is used to support the lens body 22. The elastic substrate 26 is a silicon semiconductor substrate that is adapted to elastically deform when pressed while also functioning as a semiconductor substrate. The lens body 22 is made of a transparent, deformable and non-fluid polymer that is adapted to deform when squeezed, thereby changing the optical properties of the lens body 22. The flexible transparent film 23 is covered on the upper end surface of the lens body 22, and the flexible transparent film 23 is adapted to deform when pressed and press the lens body 22 when deformed, thereby deforming the lens body 22 to change the optical characteristics thereof. The piezoelectric film 24 is electrically connected with the photosensitive assembly 6, and the piezoelectric film 24 is adapted to deform when a current is applied thereto, thereby pressing the flexible transparent film 23 and the lens body 22 so that the upper end surface of the lens body 22 forms a spherical surface, thereby achieving focusing.
The Tlens replaces the traditional voice coil motor to realize automatic focusing of the lens assembly, is favorable for reducing the size of the lens assembly, simplifies the structure of the lens assembly, and meets the requirement of terminal equipment on the small volume of the front camera module. In addition, the Tlens has the advantages of small energy consumption, quick response, no interference of a magnetic field and a gravitational field and better use stability.
The inner wall of the lens barrel 4 has a mount 41 for mounting the adjustable lens module 2, and the adjustable lens module 2 is provided on an upper end surface of the mount 41. The adjustable lens module 2 is suitable for being deformed upwards, that is, the upper end face and the side face of the adjustable lens module 2 are deformed when focusing, the lower end face of the adjustable lens module 2 is not deformed, and based on the deformation, a gap is formed between the upper end face of the adjustable lens module 2 and the lower end face of the first lens module 1, so that the adjustable lens module 2 is allowed to deform towards the direction of the first lens module 1, and a gap is formed between the side face of the adjustable lens module 2 and the inner wall of the lens barrel 4. In a specific embodiment, the adjustable lens module 2 is a Tlens lens 2A, the minimum distance of the gap between the upper end surface of the Tlens lens 2A and the lower end surface of the first lens module 1 is 0.16mm, and the minimum distance of the gap between the side surface of the Tlens lens 2A and the inner wall of the lens barrel 4 is 0.2mm.
The adjustable lens module 2 may be adhered to the mounting table 41 by using glue, and the conventional operation method at present is as follows: a plurality of glue dispensing grooves 45A are formed in the upper end surface of the lens barrel 4, as shown in fig. 6, the glue dispensing grooves 45A extend downwards to the mounting table 41, after the adjustable lens module 2 is placed on the mounting table 41, glue reaches the outer side of the adjustable lens module 2 through the glue dispensing grooves 45A, and after the glue is cured, the adjustable lens module 2 is stably held in the lens barrel 4. However, in practice, the applicant has found that when dispensing is performed using the dispensing slot 45A shown in fig. 6, glue easily overflows to the bottom surface of the adjustable lens module 2, which may affect the normal use of the adjustable lens module 2.
To solve this problem, the applicant has proposed an improvement as shown in fig. 7: the upper end surface of the lens barrel 4 is provided with a plurality of dispensing grooves 45B, the middle part of the lens barrel 4 is provided with a through hole 40 penetrating through the upper end and the lower end, and each dispensing groove 45B is arranged close to the edge of the through hole 40, so that one side of the dispensing groove 45B facing the through hole 40 is an opening, namely one side of the dispensing groove 45B facing the adjustable lens module 2 is provided with an opening, and the bottom surface of the dispensing groove 45B is higher than or lower than the upper end surface of the mounting table 41. When the bottom surface of the glue dispensing groove 45B is higher than the upper end surface of the mounting table 41, the glue is harder to reach the bottom of the adjustable lens module 2, and the glue can be prevented from overflowing to the bottom surface of the adjustable lens module 2; when the bottom surface of the dispensing slot 45B is lower than the upper end surface of the mounting table 41, the glue is mainly gathered at the bottom of the dispensing slot 45B, and is difficult to overflow to the bottom surface of the adjustable lens module 2.
In some embodiments, the outer frame of the adjustable lens module 2 is rectangular, the adjustable lens module 2 is more sensitive in a dotted line area a as shown in fig. 8, and in order to avoid that the glue B enters the area a to affect the adjustable lens module 2, the glue dispensing slot 45B is preferably arranged outside the sensitive area a. The dispensing slot 45B is away from the optical effective area in the center of the adjustable lens module 2, which is beneficial to reducing the effect of dispensing on the optical effective area and reducing the effect of stress.
In a specific embodiment, as shown in fig. 8, four glue dispensing grooves 45B are disposed on the upper end surface of the lens barrel 4, each glue dispensing groove 45B is opposite to a side wall of the adjustable lens module 2, the glue dispensing grooves 45B deviate from a center line of the opposite side wall of the adjustable lens module 2, and glue is disposed in the four glue dispensing grooves 45B to connect the periphery of the adjustable lens module 2 with the lens barrel 4. In another embodiment, as shown in fig. 9, four dispensing grooves 45B are disposed on the upper end surface of the lens barrel 4, and each dispensing groove 45B is opposite to a vertex of the adjustable lens module 2.
As shown in fig. 8, the distance from the dispensing slot 45B to the center of the adjustable lens module 2 is denoted as L 2 The distance from the vertex of the adjustable lens module 2 to the center of the adjustable lens module 2 is denoted as L 1 Preferably 0.8L 1 ≤L 2 ≤L 1 。
Preferably, among the four dispensing slots 45B, one of the dispensing slots 45B has a bottom surface higher than the upper end surface of the mounting table 41, and the other three dispensing slots 45B have a bottom surface lower than the upper end surface of the mounting table 41, and when dispensing, the adjustable lens module 2 is first dispensed in the dispensing slot 45B with a bottom surface higher than the upper end surface of the mounting table 41, and then the other dispensing slots 45B are filled with glue, so that the glue variation can be effectively prevented.
In some embodiments, as shown in fig. 8 and 9, the upper end surface of the lens barrel 4 has at least two pad grooves 43, the middle of the lens barrel 4 has a through hole 40 penetrating through the upper and lower ends, and the two pad grooves 43 are disposed near the edge of the through hole 40, so that the side of the pad groove 43 facing the light transmission hole is an opening, and as shown in fig. 10, the pad groove 43 extends downward to the adjustable lens module 2, so that the positive electrode connection end and the negative electrode connection end of the adjustable lens module 2 are opposite to the side openings of the two pad grooves 43, respectively. As shown in fig. 11, the lens barrel 4 further includes bonding pads 44 disposed in the bonding pad grooves 43, each laser groove 42 is in communication with one bonding pad groove 43, so that the conductive member 51 (the conductive member 51 is not shown in fig. 11) in the laser groove 42 is electrically connected with the bonding pad 44 in the bonding pad groove 43, the positive electrode connection end and the negative electrode connection end of the adjustable lens module 2 are electrically connected with the bonding pad 44 in the corresponding bonding pad groove 43 through electrical connection wires (e.g. gold wires) respectively, and the electrical connection wires can extend from the bonding pad 44 to the positive electrode connection end or the negative electrode connection end of the adjustable lens module 2 through the side opening of the bonding pad groove 43, so that the electrical connection wires can be prevented from passing through the upper end of the lens barrel 4, and the first lens module 1 mounted on the upper end surface of the lens barrel 4 is prevented from affecting the electrical connection wires.
In some embodiments, the first lens module 1 includes a first lens 100, as shown in fig. 12, the first lens 100 having a first surface located on the object side and a second surface located on the image side. The central region of the first surface is convex to the object side to form a protruding portion 111, and the protruding portion 111 is substantially barrel-shaped. The first surface also has a structured area 112 surrounding the protrusion 111. The top surface 1111 of the protrusion 111 forms an optically effective area for imaging, and the sidewall 1112 of the protrusion 111 connects the optically effective area formed by the top surface 1111 and the structural area 112. The second surface includes an optically active region in the central region and a non-optically imaged region surrounding the optically active region.
The "optically effective area" is used to refract light, and the light passes through the optically effective area and then is suitable for reaching the photosensitive component 6 to image; the structured zone 112, or "non-optical imaging zone" is used for lens mounting and does not participate in the refraction of light.
In some embodiments, as shown in FIG. 13, the diameter phi of the protrusion 111 does not exceed 1 mm-2.5 mm, and the height h of the protrusion 111 is not less than 0.3 mm-1.2 mm.
In this application, the material of the first lens 100 may be plastic or glass. In some preferred embodiments, the first lens 100 is a glass material. The first lens 100 made of the glass material has a smaller temperature drift and a higher transmittance. In the case where the first lens 100 is thicker, the use of glass material for the first lens 100 may reduce the effect of thickness on light transmittance.
The first lens 100 of glass material may be manufactured by a molding glass process, and the molding principle of the molding glass is as follows: and placing the glass preform with the primary shape into a precision machining forming die, heating to soften the glass, pressing the surface of a die core to deform the glass under the force, and taking out the die to form the lens with the required shape. When the molded glass is used to manufacture the first lens 100, a larger inclination angle may exist between the side wall 1112 of the protrusion 111 and the optical axis of the lens after molding, and at this time, the first lens 100 may be ground by a cold working technique, so that the included angle between the side wall 1112 of the protrusion 111 and the optical axis of the lens is smaller than a certain angle. In some embodiments, as shown in fig. 14, the sidewall 1112 of the protrusion 111 is at an angle α of less than 15 ° to the optical axis of the lens.
When the camera module of the present application is assembled in a terminal device, the protruding portion 111 of the first lens 100 is embedded into the opening 71 of the display screen 7 of the terminal device, as shown in fig. 13. The arrangement of the protruding portion 111 reduces the distance between the camera module and the upper end of the opening 71, which is beneficial to increasing the effective field angle of the camera module, that is, reducing the field angle of the first lens module 1, which is affected by the aperture of the opening 71, so as to ensure that the camera module has a sufficient light entering amount. In addition, a part of the camera module is embedded into the display screen 7, so that the volume of the camera module which is reserved at other positions in the terminal facility is reduced, namely, the installation space reserved for the camera module by the terminal equipment is reduced, and the requirement of the terminal equipment on miniaturization of the camera module is met.
Of course, since the image capturing module is directly embedded in the opening 71 of the display screen 7, the aperture of the opening 71 needs to consider the requirement of the field angle of the image capturing module.
When the camera module is assembled with the display 7, there is an inevitable eccentric tolerance between the opening 71 and the first lens 100, so a gap needs to be reserved between the sidewall 1112 of the protrusion 111 and the inner wall of the opening 71, as shown in fig. 13. In some embodiments, a cover plate 8 is disposed above the display 7 of the terminal device, as shown in fig. 15, where the cover plate 8 is not perforated at a position corresponding to the perforation 71, and a gap is formed between the top surface 1111 of the protrusion 111 and the cover plate 8 in consideration of an eccentric tolerance when the first lens 100 is assembled.
However, the gap between the protrusion 111 and the opening 71 and the cover plate 8 may cause some parasitic light to be generated, thereby affecting the imaging of the camera module. For example, a portion of the light irradiates the inner wall of the opening 71, and is reflected by the inner wall to enter the first lens 100, so that stray light is generated, and the imaging quality is affected, as shown in the optical path in fig. 15.
To further improve the imaging quality of the camera module, in some embodiments, as shown in fig. 16, the first lens module 1 further includes a light absorbing member 120, where the light absorbing member 120 is disposed around the side wall 1112 of the protrusion 111, and the top end of the light absorbing member 120 extends to a height not lower than the side wall 1112. It should be noted that the height of the light absorbing member 120 or the height of the side wall 1112 refers to the maximum height of each in a direction parallel to the optical axis. The height of the light absorbing member 120 is determined to meet the field angle requirement of the camera module and to be minimum without generating stray light or stray light. In other words, the light absorbing member 120 may function as a diaphragm, and the light entering range of the camera module may be controlled by the light absorbing member 120. On the one hand, the light absorbing member 120 can block and absorb a part of the light which is supposed to strike the inner wall of the opening 71, and on the other hand, the light absorbing member 120 can block the light which is still striking the inner wall of the opening 71 and reflected by the inner wall, so that the imaging is prevented from being affected by the part of the light.
In other embodiments, an absorbing layer may be coated on the inner wall of the opening 71 to reduce the generation of stray light. The process of coating the absorbing layer within the openings 71 is more difficult and costly than providing the light absorbing member 120.
It is understood that the light absorbing member 120 does not reflect light, and the light absorbing member 120 may be black.
In some preferred embodiments, the light absorbing member 120 is disposed against the side wall 1112 of the protrusion 111 so that stray light is prevented from entering between the light absorbing member 120 and the side wall 1112 of the protrusion 111.
In some preferred embodiments, as shown in fig. 17, the light absorbing member 120 has a first side 121 near the side wall 1112 of the protrusion 111, a second side 122 far from the side wall 1112 of the protrusion 111, and a third surface 123 connecting the top of the first side 121 and the top of the second side 122, the top of the first side 121 being lower than the top of the second side 122, at least a section of the third surface 123 being beveled, i.e., the outside of the light absorbing member 120 is higher than the inside. The lower inner side reduces the influence of the light absorbing member 120 on the light entering amount of the first lens 100, and the higher outer side better blocks the light reflected from the inner wall of the opening 71, thereby obtaining a larger light entering amount and reducing the entering of stray light.
In some embodiments, the top ends of the first side 121 and the second side 122 each extend to a height not lower than the side wall 1112 of the protrusion 111.
In some embodiments, the third surface 123 is roughened to facilitate reduced light reflection and reduced stray light generation. In some embodiments, the third surface 123 is coated with an anti-reflective light absorbing layer. In another embodiment, the third surface 123 is roughened prior to plating the anti-reflection light absorbing layer.
In some embodiments, the first lens 100 is attached to the upper end surface of the lens barrel 4 by an adhesive, which, after curing, holds the first lens 100 to the lens barrel 4. It is worth mentioning that the adhesive is in contact with the non-optical imaging area of the second surface of the first lens 100. Preferably, the relative positions of the first lens 100 and each lens module in the lens barrel 4 are determined through an active calibration step, in other words, the relative positions of the adjustable lens module 2 and the second lens module 3 can be positioned by the lens barrel 4, the adjustable lens module 2, the second lens module 3 and the lens barrel 4 are assembled first to form a second lens component, and then the first lens 100 is positioned on the upper end surface of the lens barrel 4 through the active calibration step. The specific assembly method can comprise the following steps:
The pre-assembly step: the second lens module 3 and the adjustable lens module 2 are respectively and fixedly arranged in the lens cone 4, and are assembled to obtain a second lens component;
an ingestion step: taking the first lens module 1 and the second lens component, respectively;
a pre-positioning step: arranging the first lens module 1, the second lens component and the photosensitive assembly 6 along the optical axis, so that an optical system (i.e., a lens assembly) formed by the first lens module 1 and the second lens component can image;
an active calibration step: the photosensitive assembly 6 is electrified to acquire an image formed by the lens assembly, imaging quality and adjustment quantity of the lens assembly are calculated through various image algorithms (such as SFR and MFT), and according to the calculated adjustment quantity, the relative position between the first lens module 1 and the second lens component and the relative position between the second lens component and the photosensitive assembly 6 are actively adjusted in real time in at least one direction, and the imaging quality of the lens assembly reaches a target value after one or more times of adjustment;
and (3) connection and fixation: the first lens module 1 and the second lens component are fixed in the position determined by the active calibration step with an adhesive.
It should be noted that, in the active calibration step, the at least one direction refers to at least one direction of an x-axis direction, a y-axis direction, a z-axis direction, a u-axis direction rotating around the x-axis, a v-axis direction rotating around the y-axis, and a w-axis direction rotating around the z-axis, and the x-axis, the y-axis, the z-axis, the u-axis, the v-axis, and the w-axis are as shown in fig. 18.
As will be appreciated by those skilled in the art, in the active calibration step, the imaging quality includes, but is not limited to, peak, field curvature, astigmatism, and other optical parameters.
Specifically, the foregoing assembling method further includes an adhesive laying step: an adhesive is disposed on the barrel 4 of the second lens component. The adhesive dispensing step may be performed prior to the pre-positioning step or after the active calibration step is completed. It will be appreciated that when the adhesive dispensing step is performed after the active calibration step is completed, the first lens module 1 needs to be removed and adhesive dispensed on the barrel 4. The curing mode of the adhesive can be, but is not limited to, visible light curing, ultraviolet curing and drying curing.
In some embodiments, in the step of directly taking the first lens 100, the taking device may act on the side surface of the structural region 112 of the first lens 100, or may act on the side wall 1112 of the protruding portion 111 of the first lens 100.
The application also provides terminal equipment comprising the camera module.
In some preferred embodiments, as shown in fig. 19, the terminal device includes a display 7, where the display 7 has an opening 71, and the protrusion 111 of the first lens 100 of the camera module is embedded in the opening 71, and a space is formed between the sidewall 1112 of the protrusion 111 and the inner wall of the opening 71.
Further, the terminal device further comprises a cover plate 8 (not shown in fig. 18) covering the display 7, and the cover plate 8 covers the opening 71. In some preferred embodiments, there is a gap between the top surface 1111 of the protrusion 111 of the first lens 100 and the cover plate 8.
The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims (18)

1. The utility model provides a camera module, its characterized in that includes sensitization subassembly and camera lens subassembly, the camera lens subassembly includes first lens module, adjustable lens module, second lens module and lens cone, first lens module includes first lens, first lens pass through the adhesive connect in the up end of lens cone, first lens has the first surface that is located the thing side and is located the second surface of image side, the central zone of first surface is protruding to the thing side and is formed protruding portion, first surface still has around the structural area of protruding portion, the top surface of protruding portion forms the optical effective area that is used for imaging, the lateral wall of protruding portion is connected the optical effective area with the structural area, the protruding portion is suitable for embedding terminal equipment's light inlet, terminal equipment includes the camera lens module, the first lens module outside does not set up, adjustable lens module and second lens module install in the lens cone, the setting is in on the sensitization subassembly to first lens module's central region is protruding to the thing side forms protruding portion, thereby first lens module, the top surface forms the optical effective area that is used for imaging, the protruding portion's top surface, the protruding portion is suitable for embedding in the terminal equipment's the light inlet aperture, the terminal equipment is suitable for embedding in the terminal equipment's the light inlet, thereby can be adjusted lens module with the conductive lens module is adjusted in the lens module the direction the lens module is adjusted to the lens module is taken a photograph along the photographic signal.
2. The camera module according to claim 1, wherein the inner wall of the lens barrel has a mounting table for mounting the adjustable lens module, the adjustable lens module is disposed on an upper end surface of the mounting table, the upper end surface of the adjustable lens module is adapted to deform when an electrical signal changes to achieve focusing, a gap is provided between the upper end surface of the adjustable lens module and a lower end surface of the first lens module, and a gap is provided between a side surface of the adjustable lens module and the inner wall of the lens barrel.
3. The camera module according to claim 2, wherein the conductive part comprises two conductive pieces separated from each other, the outer surface of the lens barrel is provided with two laser grooves, and the two conductive pieces are respectively arranged in the two laser grooves through a laser direct molding process.
4. The camera module according to claim 3, wherein the upper end surface of the lens barrel is provided with two bonding pad grooves, the side surface of the bonding pad groove facing the adjustable lens module is provided with an opening, the lens barrel further comprises bonding pads arranged in the bonding pad grooves, each laser groove is communicated with one bonding pad groove, so that the conductive piece in the laser groove is in conductive connection with the bonding pad in the bonding pad groove, and the positive electrode connecting end and the negative electrode connecting end of the adjustable lens module are respectively in conductive connection with the bonding pads in the corresponding bonding pad grooves through electric connection wires.
5. The camera module according to claim 2, wherein the conductive part comprises two conductive pieces separated from each other, the conductive pieces are disposed in the side wall of the lens barrel by an in-mold injection process, and two ends of the conductive pieces are exposed outside the lens barrel.
6. The camera module according to claim 2, wherein the upper end surface of the lens barrel is provided with a plurality of dispensing grooves, the dispensing grooves extend downwards from the upper end surface of the lens barrel, one side of the dispensing grooves facing the adjustable lens module is provided with an opening, and the bottom surface of the dispensing grooves is higher than or lower than the upper end surface of the mounting table.
7. The camera module according to claim 6, wherein the outer frame of the adjustable lens module is rectangular, four dispensing grooves are formed in the upper end face of the lens barrel, each dispensing groove is opposite to one side wall of the adjustable lens module, the dispensing grooves deviate from a center line of the opposite side wall of the adjustable lens module, one bottom face of each dispensing groove is higher than the upper end face of the mounting table, and the other three bottom faces of the dispensing grooves are lower than the upper end face of the mounting table.
8. The camera module according to claim 6, wherein the outer frame of the adjustable lens module is rectangular, four dispensing grooves are formed in the upper end face of the lens barrel, each dispensing groove is opposite to a vertex of the adjustable lens module, the bottom face of one dispensing groove is higher than the upper end face of the mounting table, and the bottom faces of the other three dispensing grooves are lower than the upper end face of the mounting table.
9. The camera module according to any one of claims 1 to 8, wherein the first lens is made of glass, the diameter of the protruding portion is not more than 1mm to 2.5mm, the height of the protruding portion is not less than 0.3mm to 1.2mm, and an included angle between the side wall of the protruding portion and the optical axis of the first lens is less than 15 °.
10. The camera module of any of claims 1-8, wherein the first lens module further comprises a light absorbing member disposed about the side wall of the protrusion, the top end of the light absorbing member extending to a height no lower than the side wall of the protrusion.
11. The camera module of claim 10, wherein the light absorbing member is disposed proximate to the sidewall of the protrusion, the light absorbing member has a first side proximate to the sidewall of the protrusion, a second side distal from the sidewall of the protrusion, and a third surface connecting the first side tip and the second side tip, the first side tip having a height less than a height of the second side tip, and at least a portion of the third surface is beveled.
12. The camera module of claim 11, wherein the top ends of the first side surface and the second side surface extend to a height not lower than the side wall of the protruding portion, and the third surface is roughened and/or is coated with an anti-reflection light absorption layer.
13. The camera module of any one of claims 1-8, wherein the adhesive retains the first lens on the barrel after curing, and wherein the relative position of the first lens module and the lens module within the barrel is determined by an active calibration step.
14. The camera module of any one of claims 1-8, wherein the photosensitive assembly comprises a circuit board, a photosensitive chip, a filter element and a lens mount, the photosensitive chip is disposed on the circuit board and is electrically connected with the circuit board, the lens mount is disposed on the circuit board, the lens assembly is held above the photosensitive chip by the lens mount, the filter element is held between the lens assembly and the photosensitive chip by the lens mount, the lens barrel is disposed on an upper end surface of the lens mount, and the photosensitive assembly further comprises a lens mount conductive portion disposed on the lens mount, and the lens mount conductive portion electrically connects the conductive portion and the circuit board.
15. The camera module of claim 14, wherein the conductive part comprises two mutually separated conductive pieces, the outer surface of the lens barrel is provided with two laser grooves, the two conductive pieces are respectively arranged in the two laser grooves through a laser direct forming process, the conductive part of the lens base comprises two mutually separated lens base conductive pieces, the outer surface of the lens base is provided with two lens base laser grooves, the two lens base conductive pieces are respectively arranged in the two lens base laser grooves through a laser direct forming process, the first ends of the two lens base conductive pieces are respectively connected with the second ends of the two conductive pieces in a conductive manner, the second ends of the two lens base conductive pieces are respectively connected with the circuit board in a conductive manner, and the first ends of the two conductive pieces are respectively connected with the adjustable lens module in a conductive manner.
16. The camera module according to any one of claims 1 to 8, wherein the adjustable lens module comprises a piezoelectric film, a diaphragm, a flexible transparent film, a lens body and a glass base layer which are sequentially arranged along a light incoming direction, the adjustable lens module further comprises an elastic substrate encircling the periphery of the lens body, the elastic semi-flexible transparent film, the diaphragm and the edge of the piezoelectric film are supported by the elastic substrate, a light passing area is arranged in the middle of the piezoelectric film to allow light to pass through, the diaphragm is used for limiting an imaging range, the glass base layer is used for supporting the lens body, the piezoelectric film is suitable for generating deformation when current is passed through, and the piezoelectric film is suitable for extruding the flexible transparent film and the lens body when being deformed so that the upper end face of the lens body forms a spherical surface, thereby focusing is achieved.
17. A terminal device comprising the camera module of any one of claims 1-16.
18. The terminal device of claim 17, comprising a display screen having an aperture, the projection of the first lens being embedded within the aperture.
CN202010770187.9A 2020-08-04 2020-08-04 Camera module and terminal equipment Active CN114070966B (en)

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CN202010770187.9A CN114070966B (en) 2020-08-04 2020-08-04 Camera module and terminal equipment
PCT/CN2021/107584 WO2022028248A1 (en) 2020-08-04 2021-07-21 Camera module and terminal device
CN202180059470.3A CN116194816A (en) 2020-08-04 2021-07-21 Camera module and terminal equipment

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