Optical Lens and Camera Module

Abstract

The present invention discloses an optical lens and an imaging module. The optical lens includes a first lens component and a variable aperture assembly. The first lens component includes at least one first lens. The first lens is provided with an object side and an image side. The variable aperture assembly includes a diaphragm and a driving unit. The diaphragm is mounted on the driving unit. The diaphragm is provided with a light transmission area. The driving unit is used to drive the diaphragm to change the light transmission amount of the first lens. An accommodation cavity is provided in the driving unit. At least a part of the object side of the first lens is accommodated in the accommodation cavity. Thus, while realizing the aperture adjustment and change of the imaging module, the overall height of the optical lens is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lenses, and in particular, to an optical lens and an imaging module. Background Art

[0002] In recent years, with the popularization of mobile electronic devices, the related technologies of imaging modules (used to acquire images, such as videos or pictures) applied to mobile electronic devices have been rapidly developed and advanced, and are widely used in many fields such as medical treatment, security, mobile terminals, and industrial production.

[0003] In the field of consumer electronics, especially in the field of smart phones, a miniaturized and lightweight imaging module is an essential component. Currently, at least one or more camera modules are configured on the portable terminal body. The apertures of current mobile phone imaging modules can be divided into variable and non-variable types. In either case, the aperture device is an important component of the imaging module. As an indispensable element of the optical system, it is set on / in the lens in the form of a structural part during lens assembly. The area of the aperture directly affects the amount of light entering the imaging module, which in turn affects the brightness and depth of field of the image. When the area of the aperture is large, the imaging module has a larger amount of light entering, resulting in a high-brightness image with a good background blurring effect. When the area of the aperture is small, the amount of light entering the imaging module is smaller, making the details of the formed image clearer.

[0004] Due to the limited installation space of the imaging module in electronic devices such as mobile phones, a fixed aperture device with a simple structure is usually set. However, its aperture area is fixed and cannot adapt to different shooting scenarios, let alone meet the shooting needs of users. Therefore, with the development of the market, there is a greater need for mobile phones with variable aperture devices to take pictures to meet different shooting needs. For example, when shooting at a long focal length, a large aperture is used to increase the amount of light entering and the bokeh effect. When shooting at a short focal length, it is switched to a small aperture to improve the resolution of the short focal length shooting. In the traditional lens assembly process, to ensure meeting certain design parameter standards, each lens and intermediate spacer in the lens are sequentially stacked and assembled in at least one lens barrel. For a variable aperture device, if the size of the light passing hole is to be changed, an external structure is required to stimulate its change. Therefore, the variable aperture device is placed on the lens, resulting in an increase in the overall height of the imaging module, which is not conducive to being applied in terminal devices such as mobile phones and tablets with limited installation space, thus restricting the application of imaging modules with variable aperture devices. Summary of the Invention

[0005] An object of the present invention is to provide an optical lens and an imaging module, which overcome the deficiencies of the prior art, realize the adjustment and change of the aperture of the imaging module, and at the same time reduce the overall height of the optical lens.

[0006] Another object of the present invention is to provide an optical lens and an imaging module, which solve the problem of the increase in height of the imaging module caused by the installation of the variable aperture component by reducing the height difference between the protruding lens and the variable aperture component, and meet the application in terminal devices such as mobile phones and tablets with limited installation space.

[0007] To achieve the above object, the technical solution adopted by the present invention is: an optical lens, including a first lens component and a variable aperture component, the first lens component includes at least one first lens, the first lens is provided with an object side and an image side, the variable aperture component includes a diaphragm and a driving unit, the diaphragm is installed on the driving unit, the diaphragm is provided with a light-transmitting area, the driving unit is used to drive the diaphragm to change the light-transmitting amount of the first lens, and the driving unit is provided with a receiving cavity, and at least a part of the object side of the first lens is accommodated in the receiving cavity.

[0008] As a preference, the object side of the first lens is a convex surface on the optical axis, the object side of the first lens is higher than the bottom surface of the driving unit, the image side of the first lens is lower than the top surface of the driving unit, and the diaphragm variably intersects the edge of the field of view angle of the optical lens.

[0009] As a preference, an aperture hole is provided in the middle of the diaphragm, the aperture hole is axially aligned with the first lens, the top surface of the driving unit is flush with or higher than the object side of the first lens, and at least a part of the object side of the first lens intersects the aperture hole.

[0010] As a preference, the diaphragm is arranged on the upper side of the driving unit, the image side of the first lens is lower than the aperture hole, a part of the object side of the first lens protrudes from the aperture hole, and the diaphragm is flush with or lower than the top surface of the driving unit.

[0011] As a preference, the diaphragm extends annularly from the driving unit to the object side of the first lens, and the diaphragm is axially displaced and / or radially displaced relative to the first lens, so as to change the intersection position between the diaphragm and the edge of the field of view angle of the optical lens.

[0012] As a preference, the diaphragm includes at least two blades, the aperture hole is variably formed between the blades, the driving unit can drive the blades to displace in the direction of the optical axis of the first lens, so that the aperture hole switches between a small aperture state and a large aperture state, and the blades intersect the edge of the field of view angle of the optical lens at least in the small aperture state.

[0013] As a preference, the blade is lower than the top surface of the driving unit, and the driving unit drives the blade to change the aperture of the aperture hole by translation or rotation, so that the variable aperture assembly switches between a small aperture state and a large aperture state.

[0014] As a preference, the diaphragm is provided with a fluid channel and a fluid storage cavity, the light-transmitting area is formed around the aperture hole, the fluid channel is arranged in the light-transmitting area, and the fluid storage cavity is communicated with the fluid channel for an opaque fluid to flow back and forth between the fluid storage cavity and the fluid channel in a drivable manner, so as to enlarge or reduce the light-transmitting area of the light-transmitting area.

[0015] As a preference, the driving unit is adapted to deform when the temperature or current changes, and the diaphragm changes the size of the light-transmitting area of the light-transmitting area along with the deformation of the driving unit.

[0016] As a preference, it further includes a second lens component, the second lens component includes at least one second lens and a second lens barrel, the second lens is accommodated in the second lens barrel, the second lens barrel is provided with an assembly surface, the assembly surface is located at the top of the second lens barrel, and the driving unit and / or the first lens component of the variable aperture assembly are adaptively mounted on the assembly surface.

[0017] As a preference, the first lens is provided with a positioning surface, the positioning surface is formed on the non-optical part of the outer periphery of the first lens, the positioning surface bonds the assembly surface of the second lens barrel or the inner wall of the driving unit, and the bottom surface of the driving unit bonds the assembly surface of the second lens barrel.

[0018] As a preference, the optical lens is assembled by an active calibration method, and there is an included angle between the two optical axes of the first lens component and the second lens component, and the range of the included angle is 0 to 1°.

[0019] As a preference, the first lens component further includes a light-shielding member, the light-shielding member is fixed on the non-optical part of the outer periphery of the first lens, and the light-shielding member is arranged between the first lens and the driving unit, wherein the light-shielding member is a first lens barrel or a black film.

[0020] An imaging module includes the optical lens, a support member and a photosensitive component as described above, and the optical lens is fixed on the photosensitive component through the support member.

[0021] As a preference, the photosensitive component includes a circuit board, a photosensitive chip, electronic components, a bracket, and a filter element. The photosensitive chip and the electronic components are electrically connected to the circuit board. The bracket is fixed to the circuit board and supports the optical lens or the support member. The filter element is fixed to the bracket and is disposed between the optical lens and the photosensitive component. The support member is electrically connected to the circuit board, and the driving unit of the variable aperture component is directly or indirectly electrically connected to the circuit board.

[0022] As a preference, an LDS groove is formed on the outer surface of the second lens barrel, and a conductive coating is plated on the surface of the LDS groove. The second lens barrel is electrically connected to the support member or directly to the circuit board through the conductive coating of the LDS groove, and the driving unit of the variable aperture component is electrically connected to the second lens barrel. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of a camera module according to an embodiment of the present application;

[0024] Figure 2 is a schematic structural diagram of a variable aperture component according to an embodiment of the present application (in the state of a large aperture);

[0025] Figure 3 is a schematic structural diagram of a variable aperture component according to an embodiment of the present application (in the state of a small aperture);

[0026] Figure 4 is a schematic structural diagram of a second optical lens according to an embodiment of the present application;

[0027] Figure 5 is a schematic structural diagram of a third optical lens according to an embodiment of the present application. Detailed Embodiments

[0028] Next, in combination with the specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination of the following described embodiments or technical features can form a new embodiment.

[0029] In the description of the present invention, it should be noted that for the orientation terms, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence.

[0031] The terms "comprising" and "having" in the description and claims of the present application, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0032] It should be noted that, as used in the present application, terms such as "substantially", "about" and similar terms are used as terms indicating approximation and not as terms indicating degree, and are intended to account for the inherent deviations in measured or calculated values that would be recognized by a person of ordinary skill in the art.

[0033] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection, a contact connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] According to the first aspect of the present application, there is provided an optical lens 1, as Figure 1As shown, the optical lens 1 includes a first lens component 10 and a variable aperture assembly 20. The first lens component 10 includes at least one first lens 11. The first lens 11 has an object side 112 and an image side 111. The variable aperture assembly 20 includes a diaphragm 21 and a driving unit 22. The diaphragm 21 is mounted on the driving unit 22. The diaphragm 21 has a light-transmitting area. The driving unit 22 is used to drive the diaphragm 21 to change the light-transmitting amount of the first lens 11. The driving unit 22 is provided with a receiving cavity 24. At least part of the object side 112 of the first lens 11 is received in the receiving cavity 24. Thus, by accommodating part of the first lens 11 in the variable aperture assembly 20, the setting of the lens barrel is reduced, and further the distance between the first lens 11 and the variable aperture assembly 20 is reduced. While keeping the optical lens 1 with the variable aperture assembly 20, the overall height of the optical lens 1 is reduced.

[0035] In some embodiments, the object side 112 of the first lens 11 is convex at the optical axis. The object side 112 of the first lens 11 is higher than the bottom surface of the driving unit 22. The image side 111 of the first lens 11 is lower than the top surface 221 of the driving unit 22. The diaphragm 21 variably intersects with the edge 113 of the field of view angle of the optical lens 1. Therefore, at least part of the first lens 11 is received in the variable aperture assembly 20. In the direction of the optical axis of the vertically split optical lens 1, the variable aperture assembly 20 overlaps with the first lens component 10, especially with the first lens 11. Compared with directly setting the variable aperture assembly 20 above the lens barrel in the traditional optical lens 1, in this application, part or all of the first lens 11 is received in the receiving cavity 24 of the variable aperture assembly 20, effectively reducing the height of the variable aperture imaging module 2. Wherein, the diaphragm 21 can be adjacent to the object side 112 and located on the upper side of the driving unit 22. The diaphragm 21 can also be adjacent to the image side 111 and located on the lower side of the driving unit 22. The diaphragm 21 variably intersects with the edge 113 of the field of view angle of the optical lens 1 through the driving unit 22. By changing the intersection position, the light-transmitting amount of the optical lens 1 is changed. Wherein, the upper side is the light-incident side of the first lens 11, and the lower side is the light-emitting side of the first lens 11.

[0036] In some embodiments, an aperture hole 23 is provided in the middle of the diaphragm 21, and the aperture hole 23 is axially aligned with the first lens 11. The top surface 221 of the driving unit 22 is flush with or higher than the object side surface 112 of the first lens 11, and the object side surface 112 of the first lens 11 at least partially intersects with the aperture hole 23. Among them, according to different selections of the aperture 21 and different height requirements of the optical lens 1, the aperture 21 can also be selected to be without an aperture hole 23. For example, the aperture 21 is a plane aperture 21 sheet, and a fluid channel and a fluid storage cavity are provided inside the aperture 21. The fluid channel is arranged in the light-transmitting area, and the fluid storage cavity is connected to the fluid channel so that an opaque fluid can be driven to flow back and forth between the fluid storage cavity and the fluid channel to expand or reduce the light-transmitting area of the light-transmitting area. When an aperture hole 23 is provided, the light-transmitting area is formed around the aperture hole 23, and the fluid channel is arranged in the light-transmitting area. The aperture hole 23 is an aperture in a small aperture state. The light-transmitting area of the variable aperture assembly 20 is different due to different contents of the opaque fluid in the fluid channel.

[0037] In some embodiments, the diaphragm 21 is disposed on the upper side of the driving unit 22, the image side surface 111 of the first lens 11 is lower than the aperture hole 23, the object side surface 112 of the first lens 11 is partially or completely accommodated in the driving unit 22, and the top surface 221 of the driving unit 22 is flush with or higher than the object side surface 112 of the first lens 11, thereby protecting the object side surface 112 of the first lens 11.

[0038] In some embodiments, the object side surface 112 of the first lens 11 may protrude from the aperture 21, or may be flush with or lower than the aperture 21. Preferably, the object side surface 112 of the first lens 11 protrudes from the aperture hole 23 in the aperture 21, and the aperture 21 is flush with or lower than the top surface 221 of the driving unit 22. Therefore, it is beneficial to further increase the overlapping range of the first lens component 10 and the variable aperture assembly 20, reduce the required installation height of the first lens component 10 and the variable aperture assembly 20, and reduce the height between the aperture 21 in the variable aperture assembly 20 and the first lens 11 as much as possible, which is beneficial to reduce the overall height of the variable aperture camera module 2. Therefore, the optical lens 1 solves the problem of increasing the height of the camera module 2 caused by installing the variable aperture assembly 20 by reducing the height difference between the protruding lens and the variable aperture assembly 20, and meets the application in terminal devices such as mobile phones and tablets with limited installation space.

[0039] In some embodiments, the diaphragm 21 extends annularly from the driving unit 22 towards the object side surface 112 of the first lens 11. The diaphragm 21 is axially displaced and / or radially displaced relative to the first lens 11, so as to change the intersection position of the diaphragm 21 and the field angle edge 113 of the optical lens 1. Wherein, the diaphragm 21 may be formed by a single blade 211. For example, the diaphragm 21 is a blade 211 with an aperture hole 23 formed in the middle. The driving unit 22 drives the blade 211 to perform axial displacement along the optical axis direction. By changing the intersection position of the blade 211 and the lens field angle edge 113, the light passing amount of the optical lens 1 is changed, so that the intersection position of the blade 211 and the lens field angle edge 113 is switched between the small aperture state and the large aperture state.

[0040] In some embodiments, the diaphragm 21 includes at least two blades 211, and the aperture hole 23 is variably formed between the blades 211. The driving unit 22 can drive the blades 211 to displace in the optical axis direction of the first lens 11, so that the aperture hole 23 is switched between the small aperture state and the large aperture state. The blades 211 intersect with the field angle edge 113 of the optical lens 1 at least in the small aperture state. That is to say, the change in the aperture of the aperture hole 23 formed by the blades 211 is suitable for changing the light passing amount of the optical lens 1. At least, the field angle edge 113 of the optical lens 1 intersects with the blades 211 forming the small aperture state.

[0041] In some embodiments, the driving unit 22 drives the blades 211 to perform radial translation or rotation, that is, the blades 211 perform horizontal displacement in the orthogonal plane of the optical axis. When the blades 211 move, they do not overlap with the lens optical axis, so as to avoid interference with the first lens 11 and cause damage to the first lens 11. By means of the closing or spreading of the two blades 211, the aperture of the aperture hole 23 is reduced or enlarged, and the light passing amount of the optical lens 1 is changed, so that the variable aperture assembly 20 is switched between the small aperture state and the large aperture state, as Figure 2 and Figure 3 shown.

[0042] In some embodiments, the blade 211 may be single-piece or multi-piece, and axial and radial displacements are formed by means of spiral rotation to change the aperture of the aperture hole 23 and the light passing amount of the optical lens 1, so that the variable aperture assembly 20 is switched between the small aperture state and the large aperture state.

[0043] In some embodiments, the driving unit 22 is adapted to deform when the temperature or current changes, and the aperture 21 changes the light-transmitting area of the light-transmitting region along with the deformation of the driving unit 22. The aperture 21 is mounted on the driving unit 22, so that the aperture 21 moves along with the deformation of the driving unit 22. The aperture 21 is spaced around the object side surface 112 of the first lens 11. When the driving unit 22 does not act on the aperture 21, the aperture 21 remains in the initial position. When the driving unit 22 acts on the aperture 21, the aperture 21 undergoes axial and / or radial displacement.

[0044] In some embodiments, the driving unit 22 can drive the aperture 21 by magnetic force, and can also control the displacement of the aperture 21 in each direction by means of a thermally deformable sheet. The thermally deformable sheets in different directions are controlled separately, so that the displacement amounts of the aperture 21 in different directions can be controlled separately.

[0045] In some embodiments, the optical lens 1 further includes a second lens component 30. The second lens component 30 includes at least one second lens 31 and a second lens barrel 32. The second lens 31 is accommodated in the second lens barrel 32. The second lens barrel 32 is provided with an assembly surface 321. The assembly surface 321 is located at the top of the second lens barrel 32. The driving unit 22 of the variable aperture assembly 20 and / or the first lens component 10 are adaptively mounted on the assembly surface 321.

[0046] In some embodiments, the first lens 11 is provided with a positioning surface 12. The positioning surface 12 is formed on the non-optical part of the outer periphery of the first lens 11. The positioning surface 12 bonds the assembly surface 321 of the second lens barrel 32 or the inner wall of the driving unit 22, and the bottom surface of the driving unit 22 bonds the assembly surface 321 of the second lens barrel 32.

[0047] That is to say, the non-optical part of the first lens 11 can be first bonded to the assembly surface 321 of the second lens barrel 32, and then the variable aperture assembly 20 is covered on the first lens 11. The object side surface 112 of the first lens 11 protrudes between the top surface 221 of the driving unit 22 and the diaphragm 21, and the bottom surface of the driving unit 22 is bonded to the assembly surface 321 of the second lens barrel 32, which is convenient for the prior calibration between the first lens 11 and the second lens component 30; alternatively, the non-optical part of the first lens 11 can be first bonded to the inner wall of the driving unit 22, the object side surface 112 of the first lens 11 protrudes between the top surface 221 of the driving unit 22 and the diaphragm 21, and the first lens component 10 and the variable aperture assembly 20 are installed as a whole above the second lens component 30, and the bottom surface of the driving unit 22 is bonded to the assembly surface 321 of the second lens barrel 32, which is convenient for subsequent disassembly and assembly.

[0048] In some embodiments, the optical lens 1 is assembled by an active calibration method. After adjusting the relative position relationship, it is assembled and fixed to improve the imaging quality of the optical lens 1. There is an included angle between the two optical axes of the first lens component 10 and the second lens component 30, and the range of the included angle is 0 to 1°.

[0049] Among them, the assembly method of the camera module 2 includes the steps of:

[0050] (1) Provide a first lens component 10 and a second lens component 30;

[0051] (2) Pre-positioning, the first lens component 10 and the second lens component 30 are arranged along the optical axis, so that the first lens component 10 and the second lens component 30 jointly form an imaging optical system (that is, form a split lens);

[0052] (3) Active calibration, the photosensitive component 50 is powered on to obtain the image formed by the split lens, and the imaging quality and its adjustment amount of the split lens are calculated through image algorithms such as SFR and MTF. According to the adjustment amount, the relative position between the first lens component 10 and the second lens component 30 is actively adjusted in at least one direction of the six-axis direction in real time. After one or more adjustments, the imaging quality of the split lens (mainly including optical parameters such as peak value, field curvature, and astigmatism) reaches the target value. The six-axis direction refers to the X-axis direction, Y-axis direction, Z-axis direction that are perpendicular to each other, and the RX direction, RY direction, and RZ direction that rotate around the X-axis, Y-axis, and Z-axis respectively;

[0053] (4) Cure the adhesive to fix the first lens component 10 and the second lens component 30 at the positions determined by the active calibration.

[0054] Among them, the assembly method further includes the step of disposing an adhesive, and this step can be carried out before pre-positioning or after active calibration is completed (that is, after the imaging quality of the split lens is calibrated, one of the lens components is removed, and the adhesive is disposed on the other lens component).

[0055] Among them, the adhesive is preferably a glue such as UV thermosetting glue, UV glue or thermosetting glue.

[0056] Among them, the lens assembled by the active calibration method can compensate for the manufacturing tolerances existing in each lens component through the relative position adjustment between the lens components, so that the imaging quality of the split lens meets the requirements. However, due to the active calibration process, there is an included angle between the optical axes of the first lens component 10 and the second lens component 30 after assembly, and this included angle is about between 0 and 1°.

[0057] Among them, the assembly method further includes the step of installing the variable aperture assembly 20, fixing the variable aperture assembly 20 to the assembly surface 321 of the second lens barrel 32 of the second lens component 30. In the active calibration process, the first lens 11 of the first lens component 10 can be first fixed to the assembly surface 321 of the second lens barrel 32 of the second lens component 30 to avoid interference between the variable aperture assembly 20 and the first lens component 10. By accommodating the first lens component 10 in the variable aperture assembly 20, it also helps to protect the first lens 11 of the first lens component 10; the first lens 11 can also be first fixed to the driving unit 22 of the variable aperture assembly 20 and fixed to the assembly surface 321 of the second lens barrel 32 in the form of an integral component, reducing the risk of detachment between the first lens 11 and the second lens component 30, and at the same time reducing the influence of the first lens 11 on the second lens component 30, as Figure 5 shown.

[0058] In some embodiments, the first lens component 10 further includes a light shielding member 13, and the light shielding member 13 is fixed to the non-optical part on the outer periphery of the first lens 11. The light shielding member 13 is disposed between the first lens 11 and the driving unit 22. Among them, the light shielding member 13 can be a structural member serving as the first lens barrel or a black film plated on the surface, which helps to reduce lens stray light, as Figure 4 shown.

[0059] According to a second aspect of the present application, there is provided an imaging module 2, which includes the optical lens 1, the support member 40, and the photosensitive component 50 as described above. The optical lens 1 is fixed to the photosensitive component 50 through the support member 40. Among them, the support member 40 can be a lens holder that supports the optical lens 1, or a driving motor for driving the optical lens 1 to achieve autofocus, zoom, and anti-shake. In some modified embodiments, the support member 40 may not be provided in the imaging module 2, and the optical lens 1 is directly fixed to the photosensitive component 50.

[0060] In some embodiments, the photosensitive component 50 includes a circuit board 55, a photosensitive chip 53, electronic components 52, a bracket 54, and a filter element 51. The photosensitive chip 53 and the electronic components 52 are electrically connected to the circuit board 55. The bracket 54 is fixed to the circuit board 55 and supports the optical lens 1 or the support member 40. The filter element 51 is fixed to the bracket 54 and is disposed between the optical lens 1 and the photosensitive component 50 to achieve an infrared cut-off function. The support member 40 is electrically connected to the circuit board 55, and the driving unit 22 of the variable aperture assembly 20 is directly or indirectly electrically connected to the circuit board 55.

[0061] In some embodiments, an LDS groove is formed on the outer surface of the second lens barrel 32, and a conductive coating is plated on the surface of the LDS groove. The second lens barrel 32 is electrically connected to the support member 40 or directly to the circuit board 55 through the conductive coating of the LDS groove. The driving unit 22 of the variable aperture assembly 20 is electrically connected to the second lens barrel 32. Among them, the driving unit 22 is electrically connected to the circuit board 55. The electrical connection method can be that the driving unit 22 of the variable aperture assembly 20 is electrically connected to the circuit board 55 through a flexible board, or through the second lens barrel 32 being electrically connected to the circuit board 55. For example, a conductive member is embedded in the second lens barrel 32 or an LDS groove is provided on the outer surface of the second lens barrel 32. The depth of the LDS groove is not greater than 20 - 30 μm, and the width is not less than 60 μm. A conductive coating (such as a nickel-palladium-gold coating) is plated on the surface of the LDS groove by using LDS (laser direct structuring technology). Thus, the driving unit 22 of the variable aperture assembly 20 is electrically connected to the support member 40 through the second lens barrel 32, and then electrically connected to the circuit board 55 of the photosensitive component 50, or the second lens barrel 32 is directly electrically connected to the circuit board 55 of the photosensitive component 50.

[0062] In some embodiments, the number of conductive members or LDS grooves on the second lens barrel 32 can be 2, but the number can also be adjusted according to needs.

[0063] The foregoing has described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An optical lens, characterized in that, Comprising: A first lens component, the first lens component including at least one first lens, the first lens having an object side and an image side; A variable aperture assembly, the variable aperture assembly including a diaphragm and a driving unit, the diaphragm being mounted on the driving unit, the diaphragm having a light-transmitting region, the driving unit being configured to drive the diaphragm to change the light-transmitting amount of the first lens, the driving unit having a receiving cavity, at least a part of the object side of the first lens being received in the receiving cavity, wherein, the object side of the first lens is convex at the optical axis, the object side of the first lens is higher than the bottom surface of the driving unit, the image side of the first lens is lower than the top surface of the driving unit, the diaphragm variably intersects the edge of the field of view angle of the optical lens, wherein, an aperture hole is provided in the middle of the diaphragm, the aperture hole being axially aligned with the first lens, the top surface of the driving unit being flush with or higher than the object side of the first lens, at least a part of the object side of the first lens intersecting the aperture hole; A second lens component, the second lens component including at least one second lens and a second lens barrel, the second lens being received in the second lens barrel, the second lens barrel having an assembly surface, the assembly surface being located at the top of the second lens barrel, the bottom surface of the driving unit of the variable aperture assembly being bonded to the assembly surface of the second lens barrel, the first lens having a positioning surface, the positioning surface being formed on a non-optical part of the outer periphery of the first lens, the positioning surface being bonded to the assembly surface of the second lens barrel or the inner wall of the driving unit.

2. The optical lens according to claim 1, characterized in that, The diaphragm is provided on the upper side of the driving unit, the image side of the first lens is lower than the aperture hole, a part of the object side of the first lens protrudes from the aperture hole, the diaphragm being flush with or lower than the top surface of the driving unit.

3. The optical lens according to claim 2, wherein The diaphragm extends annularly from the driving unit towards the object side of the first lens, the diaphragm being axially displaced and / or radially displaced relative to the first lens, so as to change the intersection position of the diaphragm and the edge of the field of view angle of the optical lens.

4. The optical lens according to claim 2, wherein The diaphragm includes at least two blades, the aperture hole being variably formed between the blades, the driving unit being configured to drive the blades to displace in the direction of the optical axis of the first lens, so that the aperture hole switches between a small aperture state and a large aperture state, the blades intersecting the edge of the field of view angle of the optical lens at least in the small aperture state.

5. The optical lens according to claim 4, characterized in that, The blades are lower than the top surface of the driving unit, the driving unit driving the blades to change the aperture of the aperture hole by translation or rotation, so that the variable aperture assembly switches between a small aperture state and a large aperture state.

6. The optical lens according to claim 2, wherein The diaphragm is provided with a fluid channel and a fluid storage cavity, the light-transmitting region being formed around the aperture hole, the fluid channel being provided in the light-transmitting region, the fluid storage cavity being communicated with the fluid channel for an opaque fluid to be driven to flow back and forth between the fluid storage cavity and the fluid channel, so as to enlarge or reduce the light-transmitting area of the light-transmitting region.

7. The optical lens according to any one of claims 1 to 6, characterized in that, The driving unit is adapted to deform when the temperature or current changes, and the diaphragm changes the light transmission area of the light transmission region along with the deformation of the driving unit.

8. The optical lens according to claim 7, wherein The optical lens is assembled by an active calibration method. There is an included angle between the two optical axes of the first lens component and the second lens component, and the range of the included angle is 0 to 1°.

9. The optical lens according to claim 7, wherein The first lens component further includes a light shielding member, which is fixed to the non-optical part of the outer periphery of the first lens. The light shielding member is disposed between the first lens and the driving unit, wherein the light shielding member is a first lens barrel or a black film.

10. An imaging module, characterized in that, Comprising: The optical lens according to any one of claims 1 to 9; A support member and a photosensitive component, and the optical lens is fixed to the photosensitive component through the support member.

11. The camera module according to claim 10, wherein, The photosensitive component includes a circuit board, a photosensitive chip, electronic components, a bracket, and a filter element. The photosensitive chip and the electronic components are electrically connected to the circuit board. The bracket is fixed to the circuit board and supports the optical lens or the support member. The filter element is fixed to the bracket and is disposed between the optical lens and the photosensitive component. The support member is electrically connected to the circuit board, and the driving unit of the variable aperture assembly is directly or indirectly electrically connected to the circuit board.

12. The camera module according to claim 11, wherein An LDS groove is formed on the outer surface of the second lens barrel, and a conductive coating is plated on the surface of the LDS groove. The second lens barrel is electrically connected to the support member or directly electrically connected to the circuit board through the conductive coating of the LDS groove, and the driving unit of the variable aperture assembly is electrically connected to the second lens barrel.

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