Imaging lens, camera module and electronic device

Abstract

An imaging lens has an optical axis, and includes a lens carrier and a variable aperture group. The lens carrier is configured to support at least one lens, and includes a mounting structure. The variable aperture group includes a plurality of movable vanes and a rotating element. The movable vanes are movably arranged together around the optical axis to form an aperture, and the aperture has a variable size by movement of the movable vanes. The rotating element is connected to the movable vanes, and drives the movable vanes to adjust the size of the aperture. At least one of the movable vanes and the rotating element of the variable aperture group is disposed on the mounting structure. A camera module having the imaging lens and an electronic device having the camera module are also disclosed.

Description

Technical Field

[0001] This invention relates to an imaging lens, a camera module, and an electronic device, particularly an imaging lens and camera module suitable for electronic devices. Background Technology

[0002] With advancements in semiconductor technology, the performance of electronic image sensors has improved, allowing pixels to reach smaller sizes. Therefore, optical lenses with high image quality have become an indispensable component. Furthermore, as technology advances rapidly, the applications of electronic devices equipped with optical lenses are becoming more widespread, leading to more diverse requirements for these lenses.

[0003] In recent years, camera modules have been applied to electronic devices in more fields, such as smartphones, action cameras, and other portable devices, as well as head-mounted devices for Augmented Reality (AR) and Virtual Reality (VR) or drones. Furthermore, the hardware of camera modules is constantly being updated, for example, using larger image sensors and higher-quality imaging lenses. While larger image sensors provide better image quality, they can also lead to background blur due to shallower depth of field. A variable aperture is currently available that can be used to change the depth of field, thereby adjusting the degree of background blur and controlling the amount of light entering the imaging lens, making the incorporation of variable apertures in the optical lenses of electronic devices a promising area of ​​research. However, the correct placement of the variable aperture significantly affects the image quality of the optical lens, making variable aperture lenses difficult to manufacture. Known variable apertures are prone to misalignment during assembly or use, potentially causing flare, light leakage, and reduced resolution, negatively impacting image quality. Therefore, improving the precision of variable aperture components and the integration between their parts to meet the high specifications required for electronic devices has become an important issue in the field. Summary of the Invention

[0004] In view of the problems mentioned above, the present invention provides an imaging lens with high precision and high component integration, thereby ensuring image quality in an imaging lens with a variable aperture.

[0005] An imaging lens disclosed in one embodiment of the present invention has an optical axis. The imaging lens includes a lens carrier and a variable aperture assembly. The lens carrier is used to mount at least one lens and includes a mounting structure. The variable aperture assembly includes a plurality of movable blades and a rotating element. The movable blades are movably arranged together around the optical axis to form a through-hole. The through-hole has a variable size due to the movement of the movable blades. The rotating element is connected to the movable blades and drives the movable blades to adjust the size of the through-hole. At least one of the movable blades and the rotating element of the variable aperture assembly is disposed in the mounting structure.

[0006] Another embodiment of the present invention discloses a camera module that includes the imaging lens described above.

[0007] Another embodiment of the present invention discloses an electronic device that includes the above-described camera module.

[0008] According to the imaging lens, camera module, and electronic device disclosed in the above embodiments, by providing at least one of the movable blades and rotating elements of the variable aperture group in the mounting structure, the offset of the variable aperture group in the optical axis direction can be reduced, which helps to ensure the light-blocking effect of the movable blades, thereby ensuring the imaging quality of the imaging lens.

[0009] Furthermore, assembling the lens onto the lens carrier simplifies the assembly process and helps improve production efficiency.

[0010] The above description of the content of this invention and the following description of the embodiments are used to demonstrate and explain the principles of this invention, and to provide a further explanation of the scope of the patent application of this invention. Attached Figure Description

[0011] Figure 1 This is a perspective view of a camera module according to a first embodiment of the present invention.

[0012] Figure 2 yes Figure 1 An exploded view of the camera module.

[0013] Figure 3 yes Figure 2 An exploded view of the imaging lens of the camera module.

[0014] Figure 4 yes Figure 3 A schematic diagram showing the correspondence between some components of the imaging lens.

[0015] Figure 5 yes Figure 1 A partially cut-out 3D schematic diagram of the camera module.

[0016] Figure 6 yes Figure 5A magnified schematic diagram of the partially cut-out camera module in region AA.

[0017] Figure 7 yes Figure 5 A magnified schematic diagram of the partially cut-out camera module in the BB region.

[0018] Figure 8 yes Figure 5 A magnified schematic diagram of the partially cut-out camera module in the CC region.

[0019] Figure 9 yes Figure 5 A magnified schematic diagram of the partially cut-out camera module in the DD region.

[0020] Figure 10 yes Figure 5 A magnified schematic diagram of the partially cut-out camera module in the EE region.

[0021] Figure 11 This is a perspective view of a camera module according to a second embodiment of the present invention.

[0022] Figure 12 yes Figure 11 An exploded view of the camera module.

[0023] Figure 13 yes Figure 12 An exploded view of the imaging lens of the camera module.

[0024] Figure 14 yes Figure 13 A schematic diagram showing the correspondence between some components of the imaging lens.

[0025] Figure 15 yes Figure 13 Another corresponding diagram of the components of the imaging lens.

[0026] Figure 16 yes Figure 11 A partially cut-out 3D schematic diagram of the camera module.

[0027] Figure 17 yes Figure 16 A magnified schematic diagram of the partially cut-out camera module in the FF region.

[0028] Figure 18 yes Figure 16 A magnified schematic diagram of the partially cut-out camera module in the GG region.

[0029] Figure 19 yes Figure 16 A magnified schematic diagram of the partially cut-out camera module in the HH region.

[0030] Figure 20 yes Figure 16 A magnified schematic diagram of the partially cut-out camera module in region II.

[0031] Figure 21 yes Figure 16 A magnified schematic diagram of the partially cut camera module in the JJ region.

[0032] Figure 22 yes Figure 12 An exploded view of the image sensor module of the camera module.

[0033] Figure 23 This is a perspective view of a camera module according to a third embodiment of the present invention.

[0034] Figure 24 yes Figure 23 An exploded view of the camera module.

[0035] Figure 25 yes Figure 24 An exploded view of the imaging lens of the camera module.

[0036] Figure 26 yes Figure 24 A schematic diagram showing the correspondence between some components of the imaging lens.

[0037] Figure 27 yes Figure 24 Another corresponding diagram of the components of the imaging lens.

[0038] Figure 28 yes Figure 23 A partially cut-out 3D schematic diagram of the camera module.

[0039] Figure 29 yes Figure 28 A magnified schematic diagram of the partially cut-out camera module in the KK region.

[0040] Figure 30 yes Figure 28 A magnified schematic diagram of the partially cut-out camera module in the LL region.

[0041] Figure 31 yes Figure 28 A magnified schematic diagram of the partially cut-out camera module in the MM region.

[0042] Figure 32 yes Figure 28 A magnified schematic diagram of the partially sectional camera module in the NN region.

[0043] Figure 33 yes Figure 28A magnified schematic diagram of the partially cut-out camera module in the OO region.

[0044] Figure 34 A perspective view of an electronic device according to a fourth embodiment of the present invention is shown.

[0045] Figure 35 Draw Figure 34 A three-dimensional diagram of the other side of the electronic device.

[0046] Figure 36 Draw Figure 34 System block diagram of an electronic device.

[0047] Figure 37 Draw Figure 34 An illustration of an image captured by a wide-angle camera module of an electronic device.

[0048] Figure 38 Draw Figure 34 An illustration of an image captured by an electronic device using a variable aperture camera module at an aperture value of 1.4.

[0049] Figure 39 Draw Figure 34 An illustration of an image captured by an electronic device using a variable aperture camera module at an aperture value of f / 5.6.

[0050] Figure 40 This is a schematic diagram illustrating an arrangement of ferromagnetic elements in the main body of a lens carrier according to the present invention.

[0051] Figure 41 This is a schematic diagram illustrating another configuration of ferromagnetic elements in the main body of a lens carrier according to the present invention.

[0052] Figure 42 This is a schematic diagram illustrating another arrangement of ferromagnetic elements in the main body of a lens carrier according to the present invention.

[0053] Figure 43 This is a schematic diagram illustrating another arrangement of ferromagnetic elements in the main body of a lens carrier according to the present invention.

[0054] Figure 44 This is a schematic diagram of a circuit configuration of a control circuit and a position sensing circuit combined with other components according to the present invention.

[0055] Figure 45 This is a schematic diagram of a circuit configuration of a through-hole controller integrating control circuitry and position sensing circuitry, along with other components, according to the present invention.

[0056] Figure 46This is a block diagram of a system comprising a control circuit and a position sensing circuit, along with other components, according to the present invention.

[0057] [Symbol Explanation] 1, 2, 3: Camera module 11, 21, 31: Fixing parts 3100: Fixed frame 1101, 2101: Base 2101a: Connected circuit 1102, 2102, 3102: Shell components 3103: Conductive terminal element 3103a: Conductive terminal 3103b: Connect external connection point 12, 22, 32: Movable parts 3200: Movable Part Frame 1201: Imaging lens carrier 100, 200, 300: Imaging lenses 101, 201, 301, OA: Optical axis 102, 202, 302: Imaging planes 110, 210, 310: Lens carrier 111, 211, 311, MP: Main body 112, 212, 312: Installation structure 112a, 312a: First mounting structure 112b, 312b: Second mounting structure 3120: Gap surface 1121, 3121: Groove 1122, 3122: Axial structure 2123: Sliding surface 113, 213, 313, FM1, FM2, FM3, FM4: Ferromagnetic components 1131, 3131, SRS: Fixed structure 120, 220, 320: Variable through-hole group 121, 221, 321: Movable blades 1211, 2211, 3211: Corresponding holes for rotating elements 1212, 3212: Corresponding holes on the lens carrier 2213: Corresponding hole for fixing component 122, 222, 322: Rotating elements 1221, 2221, 3221: Axial structure 2222: Low-friction characteristic surface 3223: Trench structure 123, 323: Rolling elements 124, 224, 324: Electromagnetic pairs 1241, 2241, 3241: Through-hole magnets 1242, 2242, 3242: Through-hole coils 125, 225, 325, THC: Through-hole circuit 1251, 2251, 3251: Through-hole controller 1252, 2252, 3252: Circuit contacts 2253: Position sensor 130, 230: Fixed components 230a: First fixed element 230b: Second fixing element 1300, 2300: Gap surface 2301: Axial structure 2302: Positioning Structure 2303: Trench structure 140, 240, 340: Driver mounting structure 1202, 2202, 3202: Lenses 1202p, 2202p, 3202p: Positive lenses 3203: First rolling element 3204: Second rolling element 3205: Channel structure 3206: Conductive colloid 13, 23: Elastic elements 13a, 23a: First elastic element 13b, 23b: Second elastic element 13c: Third elastic element 24: Electrical connection elements 15, 25, 35: Drive unit 3500: Drive Unit Frame 3500a: Drive circuit 3500b: Connect external connection point 3500c: Drive Controller 1501: Driving magnet carrier 1502, 2502, 3502: Driving magnet 1503, 2503, 3503: Drive coil 1503a: Autofocus drive coil 1503b: Optical anti-shake drive coil 26: Filter element module 2601: Filter element frame 2601a: Connected Circuit 2601b: Opening 2602: Filter element 17, 37: Photosensitive element 27: Photosensitive element module 1700, 2700, 3700: Connect external points 2701: Image sensor frame 2701a: Base contact 2701b: Photosensitive element contact 2702: Photosensitive element elastic element 2703: Photosensitive element 2704: Electrical connection element for photosensitive element 4: Electronic devices 4a: Indicator Light 40a, 40b, 40c, 40d, 40e: Camera modules 42: Flash module 43: Focusing Assist Module 44: Single-chip system 45: Display device 451: Zoom control button 452: Focus and take photo button 453: Video playback button 454: Camera module switching button 455: Integrated menu button 47: Biometric Sensors 48: Circuit Board 481: Connector 49: Electronic Components CL: Coil CTC: Control Circuit GND: Grounding GP: gap OBJ: Subject PSC: Position Sensing Circuit TB: Thickness of movable blades TG, TG': thickness of the gap TH: Through hole VCC: Power supply Detailed Implementation

[0058] The following detailed description of the features and advantages of the present invention in the embodiments is sufficient to enable any person skilled in the art to understand the technical content of the present invention and to implement it accordingly. Based on the disclosure, claims, and drawings in this specification, any person skilled in the art can easily understand the related objects and advantages of the present invention. The following embodiments further illustrate the points of the present invention in detail, but are not intended to limit the scope of the present invention in any way.

[0059] This invention provides a camera module that may include a fixed part, a movable part, and a photosensitive element. The movable part is movable relative to the fixed part. The movable part may include an imaging lens and at least one lens. The photosensitive element may be disposed on an imaging surface of the imaging lens.

[0060] The imaging lens has an optical axis. The imaging lens includes a lens carrier and a variable aperture assembly. The lens carrier can accommodate the at least one lens and may include a mounting structure and a ferromagnetic element. The variable aperture assembly may include multiple movable blades, a rotating element, at least one electromagnetic pair, and a through-hole circuit.

[0061] Movable blades movably surround the optical axis to form a through-hole. The through-hole has a variable size due to the movement of the movable blades. The through-hole can be positioned at the location of the aperture of the imaging lens. Thus, the through-hole with a variable size can serve as the physical aperture of the imaging lens. The aperture value of the imaging lens is FNO, which satisfies the following condition: FNO ≥ 1.1. This improves the feasibility of using the through-hole as an aperture. It can also satisfy the following conditions: FNO ≥ 1.3. It can also satisfy the following condition: FNO ≥ 1.7. The at least one lens may include a positive lens, and the positive lens is disposed adjacent to the through-hole. A positive lens is a lens with positive refractive power, which can converge light rays near the optical axis. By configuring the positive lens, the imaging light rays can be converged, thereby increasing the amount of light entering the through-hole.

[0062] A rotating element is connected to a movable blade. The rotating element is rotatable, thereby driving the movable blade to adjust the size of the through hole.

[0063] At least one of the movable blades and rotating elements of the variable aperture assembly is disposed in the mounting structure. This configuration reduces the offset of the variable aperture assembly along the optical axis, helping to ensure the light-blocking effect of the movable blades and thus ensuring the imaging quality of the imaging lens. Furthermore, assembling the lens onto the lens carrier simplifies the assembly process and improves production efficiency. The mounting structure may include multiple shaft-like structures. Each shaft-like structure can be correspondingly disposed to a movable blade, and the relative displacement between the shaft-like structures and the rotating element can drive the movable blades to rotate. This allows for precise control of the aperture size. The relative displacement between the shaft-like structures and the rotating element can also drive the movable blades to move.

[0064] When the movable blades are disposed in the mounting structure, the imaging lens disclosed in an embodiment of the present invention may have a gap surface. A gap may be formed between the gap surface and the rotating element, and the movable blades may be disposed within the gap. The thickness of the gap is TG, and the thickness of each movable blade is TB, which may satisfy the following condition: 0.002 [micrometers] ≤ TG - TB ≤ 0.3 [micrometers]. By providing the movable blades within a suitable gap, optical quality can be ensured and resistance during the movement of the movable blades can be reduced. The following condition may also be satisfied: 0.003 [micrometers] ≤ TG - TB ≤ 0.1 [micrometers]. Please refer to... Figure 29 The diagram illustrates TG and TB according to the third embodiment of the present invention.

[0065] When the movable blade is disposed in the mounting structure, the imaging lens disclosed in an embodiment of the present invention may further include a fixing element. The fixing element and the lens carrier may be fixed relative to each other. The fixing element may have a gap surface. A gap may be formed between the mounting structure and one of the rotating elements and the gap surface, and the movable blade may be disposed within the gap. The thickness of the gap is TG', and the thickness of each movable blade is TB, which may satisfy the following condition: 0.002 [micrometers] ≤ TG' - TB ≤ 0.3 [micrometers]. By providing the movable blade within a suitable gap, optical quality can be ensured and resistance when moving the movable blade can be reduced. The following condition may also be satisfied: 0.003 [micrometers] ≤ TG' - TB ≤ 0.1 [micrometers]. Please refer to... Figure 6 The diagram illustrates TG' and TB according to the first embodiment of the present invention.

[0066] When the movable blade is disposed on the mounting structure, the imaging lens disclosed in an embodiment of the present invention may have a bearing surface in the mounting structure. The movable blade may be disposed on the bearing surface. The arithmetic mean roughness (Ra) of the bearing surface may be less than 0.25 micrometers. This reduces friction on the movable blade and helps to improve its service life. The arithmetic mean roughness (Ra) of the bearing surface may also be less than 0.20 micrometers. Alternatively, the arithmetic mean roughness (Ra) of the bearing surface may be less than 0.17 micrometers.

[0067] When the rotating element is disposed on the mounting structure, the imaging lens disclosed in an embodiment of the present invention may further include a plurality of rolling elements in the variable through-hole assembly. The rolling elements may be disposed between the mounting structure and the rotating element and may be arranged around the through-hole to provide the rotating element with degrees of freedom in the rotational direction. This facilitates smooth movement of the rotating element driving the movable blade. The mounting structure may have a plurality of grooves, and the grooves correspond to the rolling elements. This fixes the actuation stroke of the rolling elements. The grooves may further be arc-shaped grooves. The rolling elements may be spherical. The rolling elements may also be cylindrical. The rolling elements may also be conical.

[0068] When the rotating element is disposed on the mounting structure, the imaging lens disclosed in an embodiment of the present invention may have a sliding surface. The rotating element may be slidably located on the sliding surface. The coefficient of kinetic friction between the rotating element and the sliding surface may be less than 0.52. This facilitates smooth movement of the rotating element driving the movable blade. The coefficient of kinetic friction may also be less than or equal to 0.3. The coefficient of kinetic friction may also be less than or equal to 0.11. It is noteworthy that the sliding surface may be achieved by applying a low-friction coating, providing a lubricating material, or providing a surface morphology with low friction.

[0069] The at least one electromagnetic pair may include a through-hole magnet and a through-hole coil. The through-hole magnet may be disposed on the rotating element. The through-hole coil and the through-hole magnet may be disposed opposite to each other. The through-hole coil and the through-hole circuit may be electrically connected to provide power for driving the rotation of the rotating element. This helps to precisely control the through-hole size. The number of the at least one electromagnetic pair may be two, and these two electromagnetic pairs are symmetrically arranged. This allows for even force application by the electromagnetic pairs, preventing the rotating element from shifting. The through-hole magnet and the ferromagnetic element may be correspondingly arranged. This prevents the variable through-hole assembly from easily deviating relative to the lens carrier during and after assembly. The ferromagnetic element may be arranged around the optical axis. The ferromagnetic element may also be arranged partially around the optical axis. The ferromagnetic element may be fixed within the lens carrier, for example, by an embedded injection process. Please refer to... Figure 40 The illustration shows a ferromagnetic element FM1 disposed around the optical axis OA and fixed within the main body MP of the lens carrier by two fixing structures SRS, according to an embodiment of the present invention. Please refer to... Figure 41 The illustration shows a ferromagnetic element FM2 disposed around the optical axis OA and fixed within the main body MP of the lens carrier by four fixing structures SRS, according to another embodiment of the invention. Please refer to... Figure 42 The illustration shows ferromagnetic elements FM3 partially arranged around the optical axis OA and each fixed to the main body MP of the lens carrier by a fixing structure SRS, according to another embodiment of the present invention. Please refer to... Figure 43The illustration shows ferromagnetic elements FM4 partially arranged around the optical axis OA and each fixed to the main body MP of the lens carrier by two fixing structures SRS, according to another embodiment of the present invention.

[0070] The through-hole circuit may include a control circuit. The control circuit controls the through-hole coil to generate a magnetic field for driving the rotation of a rotating element. This reduces the number of external wires connected to the through-hole circuit. The through-hole circuit may also include a position sensing circuit. The position sensing circuit senses the position of the rotating element. This enables the through-hole circuit to have feedback control functionality. A through-hole controller integrating the aforementioned control circuit and position sensing circuit can also be provided. This simplifies component placement.

[0071] In one embodiment of the present invention, the electrical connection relationship and feedback control between the control circuit and the position sensing circuit and their paired coils can be referred to Figure 44 and Figure 46 ,in Figure 44 This is a schematic diagram of a circuit configuration of the control circuit and position sensing circuit combined with other components according to the present invention. Figure 46 This is a block diagram of a system comprising a control circuit and a position sensing circuit, along with other components, according to the present invention. Figure 44 The control circuit CTC and the position sensing circuit PSC are two independent components, and both are electrically connected to the power supply VCC and grounded to GND via the through-hole circuit THC. The control circuit CTC is electrically connected to the coil CL to control the coil CL to generate an appropriate magnetic field, wherein one end of each coil CL is grounded to GND, and the coil CL can be, for example, the through-hole coil or drive coil described in this specification. The position sensing circuit PSC is used to obtain the position of the rotating element and the through-hole magnet in the direction surrounding the through-hole, and the position sensing circuit PSC is electrically connected to the control circuit CTC to generate a signal based on the sensed position information and transmit it to the control circuit CTC. Figure 46 As shown, a closed-loop feedback control system is used. The position of the through-hole magnet on the rotating element is sensed by the position sensing circuit PSC and fed back to the control circuit CTC. The control circuit CTC can then correct the magnetic field generated by the coil CL, thereby adjusting the position of the rotating element.

[0072] In another embodiment of the present invention, the electrical connection relationship and feedback control between the through-hole controller integrating the control circuit and the position sensing circuit and its paired coil can be referred to Figure 45 and Figure 46 ,in Figure 45 This is a schematic diagram of a circuit configuration of a through-hole controller integrating control circuitry and position sensing circuitry, along with other components, according to the present invention. Figure 46This is a block diagram of a system comprising a control circuit and a position sensing circuit, along with other components, according to the present invention. Figure 45 The control circuit CTC and the position sensing circuit PSC are integrated into a through-hole controller. The control circuit CTC and the position sensing circuit PSC are electrically connected to the power supply VCC and grounded to GND through the through-hole circuit THC. The control circuit CTC is electrically connected to the coil CL to control the coil CL to generate an appropriate magnetic field. Each end of the coil CL is grounded to GND, and the coil CL can be, for example, the through-hole coil or drive coil described in this specification. The position sensing circuit PSC is used to obtain the position of the rotating element and the through-hole magnet in the direction surrounding the through-hole. Figure 46 As shown, a closed-loop feedback control system is used. The position of the through-hole magnet on the rotating element is sensed by the position sensing circuit PSC and fed back to the control circuit CTC. The control circuit CTC can then correct the magnetic field generated by the coil CL, thereby adjusting the position of the rotating element.

[0073] The camera module disclosed in this invention may further include an elastic element. The elastic element can connect the fixed part and the movable part to provide the movable part with a degree of freedom in at least one direction relative to the fixed part.

[0074] According to an embodiment of the present invention, the elastic element of the camera module may be conductive and electrically connected to a through-hole circuit. This helps to simplify the circuit configuration of the camera module.

[0075] The camera module disclosed in one embodiment of the present invention may further include an electrical connection element. The electrical connection element may include multiple conductive paths. These conductive paths can electrically connect the through-hole circuit and the fixing part. In the optical axis direction, the elastic constant of the electrical connection element may be less than the elastic constant of the elastic element. This prevents the electrical connection from interfering with the mechanical balance of the movable part. The elastic constant of the electrical connection element may be less than 1 / 2 of the elastic constant of the elastic element. The elastic constant of the electrical connection element may be less than 1 / 5 of the elastic constant of the elastic element.

[0076] According to an embodiment of the camera module disclosed in this invention, the fixed part may include a conductive terminal. The movable part may further include a groove structure and a conductive gel. The groove structure may be located on the lens carrier. This reduces the number of parts used. The conductive gel may be disposed within the groove structure. The conductive terminal may extend to the conductive gel, and the conductive terminal may be electrically connected to the through-hole circuit through the conductive gel. This reduces the impact of the circuit structure on the operation of the imaging lens; furthermore, it simplifies the complexity of wire configuration and helps improve the yield rate. The conductive gel may be a damping material. This allows for a buffering effect through the damping material of the conductive gel combined with the structure of the conductive terminal.

[0077] The camera module disclosed in this invention may further include a driving unit. The driving unit may include a driving magnet and a driving coil. The driving magnet and the driving coil may be arranged opposite to each other. The lens carrier may further include a driving mounting structure. One of the driving magnet and the driving coil may be disposed in the driving mounting structure. This allows for full utilization of the internal space of the camera module. When the driving coil is mounted in the driving mounting structure, the driving coil can be electrically connected to a through-hole circuit. This simplifies the complexity of wire configuration and helps improve the yield rate.

[0078] The maximum image height can be defined as the distance between the point on the image sensor furthest from the optical axis of the imaging lens and the optical axis itself. The maximum image height is ImgH, which can satisfy the following conditions: ImgH ≥ 2 [mm]. This allows for the use of large image sensors with variable-sized apertures, facilitating diverse shooting effects. Alternatively, it can also satisfy the following conditions: ImgH ≥ 3 [mm]. Furthermore, it can also satisfy the following conditions: ImgH ≥ 4 [mm]. Additionally, it can also satisfy the following conditions: ImgH ≥ 6 [mm]. Finally, it can also satisfy the following conditions: ImgH ≥ 8 [mm].

[0079] The imaging lens can have a maximum field of view, which corresponds to a maximum image height. The maximum field of view (FOV) can satisfy the following condition: FOV ≤ 100 degrees. With an appropriate maximum field of view, the size of the through-hole can be controlled. It can also satisfy the following condition: FOV ≤ 95 degrees. Alternatively, it can satisfy the following condition: FOV ≤ 90 degrees.

[0080] The present invention provides an electronic device comprising the aforementioned camera module.

[0081] The various technical features in the imaging lens, camera module, and electronic device of the present invention can be combined and configured to achieve the corresponding effects.

[0082] Based on the above embodiments, specific examples are presented below and described in detail with reference to the accompanying drawings. It is worth noting that the "Enlarged Aligned Section View" in the accompanying drawings is defined by multiple non-parallel cross-sections, ignoring differences in the axial direction, which allows for a better representation of the relative relationship of the structure in the radial direction. Therefore, some structures in the enlarged aligned section view will not correspond to the actual cross-sections.

[0083] <First Embodiment> Please refer to Figures 1 to 10 ,in Figure 1 This is a perspective view of a camera module according to the first embodiment of the present invention. Figure 2 yes Figure 1 An exploded view of the camera module. Figure 3 yes Figure 2 An exploded view of the imaging lens of the camera module. Figure 4 yes Figure 3 A schematic diagram showing the correspondence between some components of the imaging lens. Figure 5 yes Figure 1 A partially cut-out 3D schematic diagram of the camera module. Figure 6 yes Figure 5 A magnified schematic diagram of the partially cut-out camera module in region AA, showing its upright orientation. Figure 7 yes Figure 5 A magnified schematic diagram of the partially cut-out camera module in the BB region, showing its upright orientation. Figure 8 yes Figure 5 A magnified schematic diagram of the partially cut-out camera module in the CC region, showing its upright orientation. Figure 9 yes Figure 5 A magnified schematic diagram of the partially sectional camera module in the DD region, showing its upright orientation. Figure 10 yes Figure 5 A magnified schematic diagram of the partially cut-out camera module in the EE region.

[0084] This embodiment provides a camera module 1, which includes a fixed part 11, a movable part 12, an elastic element 13, a driving part 15, and a photosensitive element 17.

[0085] The fixing part 11 includes a base 1101 and a shell element 1102. The shell element 1102 is disposed on the base 1101 and together with the base 1101 forms an accommodating space (not otherwise labeled) to accommodate the movable part 12, the elastic element 13 and the driving part 15.

[0086] The movable part 12 is movable relative to the fixed part 11. Specifically, the movable part 12 includes an imaging lens carrier 1201, an imaging lens 100, and a plurality of lenses 1202. The imaging lens 100 is housed within the imaging lens carrier 1201. The imaging lens 100 has an optical axis 101 and an imaging surface 102. The optical axis 101 passes through the imaging surface 102. The lenses 1202 are housed within the imaging lens 100. The elastic element 13 includes four conductive first elastic elements 13a, one second elastic element 13b, and four third elastic elements 13c. The driving part 15 includes a driving magnet carrier 1501, four driving magnets 1502, and two driving coils 1503. The driving magnets 1502 are disposed on the driving magnet carrier 1501. Figure 10 As shown, the first elastic element 13a and the third elastic element 13c are connected between the driving magnet carrier 1501 and the base 1101 of the driving part 15, so that the imaging lens carrier 1201 and the imaging lens 100 have a degree of freedom to move in the direction perpendicular to the optical axis 101. Figure 8As shown, the first elastic element 13a and the second elastic element 13b are connected between the imaging lens carrier 1201 of the movable part 12 and the driving magnet carrier 1501 of the driving part 15, so that the imaging lens carrier 1201 together with the imaging lens 100 has the freedom to move in the direction of the optical axis 101.

[0087] The imaging lens 100 includes a lens carrier 110, a variable aperture group 120, a fixing element 130, and two drive mounting structures 140.

[0088] The lens carrier 110 includes a main body 111, a mounting structure 112, and a ferromagnetic element 113. The main body 111 houses the lens 1202. The mounting structure 112 includes a first mounting structure 112a and a second mounting structure 112b. The first mounting structure 112a has multiple grooves 1121. The second mounting structure 112b includes multiple shaft-like structures 1122. Figure 4 As shown, the ferromagnetic element 113 has a fixing structure 1131. The ferromagnetic element 113 is fixed inside the main body 111 by the fixing structure 1131.

[0089] The variable through-hole assembly 120 includes multiple movable blades 121, a rotating element 122, four spherical rolling elements 123, two sets of electromagnetic pairs 124, and a through-hole circuit 125.

[0090] The movable blade 121 has multiple rotating element corresponding holes 1211 and multiple lens carrier corresponding holes 1212. The movable blade 121 movably surrounds the optical axis 101 to form a through-hole TH, and the through-hole TH has a variable size due to the movement of the movable blade 121. The through-hole TH is located at the aperture position of the imaging lens 100, thereby using the through-hole TH with a variable size as the physical aperture of the imaging lens 100. The aperture value of the imaging lens 100 is defined as FNO, and when the size of the through-hole TH is changed to its maximum, it satisfies the following condition: FNO = 1.4. In addition, the lens 1202 includes a positive lens 1202p. The positive lens 1202p has positive refractive power and is disposed adjacent to the through-hole TH.

[0091] The rotating element 122 includes multiple shaft-like structures 1221. For example... Figure 3 and Figure 9As shown, rolling elements 123 are disposed in grooves 1121 and arranged around the through hole TH. The rolling elements 123, disposed between the first mounting structure 112a and the rotating element 122, provide the rotating element 122 with a degree of freedom to rotate relative to the lens carrier 110 in a rotational direction about the optical axis 101. Lens carrier corresponding holes 1212 of the movable blade 121 are respectively disposed in the shaft-like structure 1122 of the second mounting structure 112b. Rotating element corresponding holes 1211 of the movable blade 121 are respectively disposed in the shaft-like structure 1221 of the rotating element 122. The relative displacement between the shaft-like structure 1122 of the second mounting structure 112b and the shaft-like structure 1221 of the rotating element 122 can drive the movable blade 121 to rotate and / or displace, thereby driving the movable blade 121 to adjust the size of the through hole TH.

[0092] Two sets of electromagnetic pairs 124 are arranged symmetrically to each other. Each set of electromagnetic pairs 124 includes a through-hole magnet 1241 and a through-hole coil 1242. For example... Figure 3 , Figure 4 and Figure 7 As shown, the through-hole magnet 1241 is disposed in the groove (not otherwise labeled) of the rotating element 122, and is correspondingly disposed with respect to the ferromagnetic element 113 surrounding the optical axis 101. Figure 3 and Figure 7 As shown, the through-hole coil 1242 and the through-hole magnet 1241 are arranged opposite to each other.

[0093] The through-hole circuit 125 is electrically connected to the through-hole coil 1242 to provide power for driving the rotation of the rotating element 122. The through-hole circuit 125 includes a through-hole controller 1251 and multiple circuit contacts 1252. The through-hole controller 1251 integrates control circuitry and position sensing circuitry (not otherwise labeled). The through-hole controller 1251 is located at the center of the through-hole coil 1242. The control circuitry of the through-hole controller 1251 controls the through-hole coil 1242 to generate a magnetic field for driving the rotation of the rotating element 122. Figure 3 and Figure 7 As shown, the position sensing circuit of the through-hole controller 1251 is positioned opposite to the through-hole magnet 1241 to sense changes in the magnetic field of the through-hole magnet 1241, thereby determining the position of the rotating element 122. Figure 7 As shown, the through-hole circuit 125 is electrically connected to the first elastic element 13a through the circuit contact 1252 to provide power and signals to the variable through-hole assembly 120.

[0094] The fixing element 130 is fixed relative to the lens carrier 110. For example... Figure 6As shown, the fixing element 130 has a gap surface 1300. A gap GP is formed between the gap surface 1300 and the main body 111 of the lens carrier 110, and the movable blade 121 is disposed within the gap GP. The thickness of the gap GP is TG', and the thickness of each movable blade 121 is TB, which satisfies the following conditions: TG' = 0.18 [micrometers]; TB = 0.1 [micrometers]; and TG' - TB = 0.08 [micrometers]. In this embodiment, the movable blade 121 is as follows: Figure 3 As shown, the purpose of setting is achieved by rotating the corresponding hole 1211 of the element and the corresponding hole 1212 of the lens carrier, but the present invention is not limited thereto. In some embodiments, the second mounting structure may also have a bearing surface, the movable blade is disposed on the bearing surface, and the arithmetic mean roughness (Ra) of the bearing surface is less than 0.25 micrometers.

[0095] The drive mounting structure 140 is disposed on opposite sides of the imaging lens carrier 1201. The drive coil 1503 includes two autofocus drive coils 1503a and four optical image stabilization drive coils 1503b.

[0096] like Figure 8 As shown, the autofocus drive coil 1503a is disposed on the drive mounting structure 140 and is disposed opposite to the drive magnet 1502. The autofocus drive coil 1503a is electrically connected to the through-hole circuit 125, thereby causing the imaging lens carrier 1201 and the imaging lens 100 to move in the direction of the optical axis 101 to achieve the focusing function.

[0097] like Figure 10 As shown, the optical anti-shake drive coil 1503b is disposed on the base 1101 and is disposed opposite to the drive magnet 1502, so that the drive magnet carrier 1501 together with the imaging lens carrier 1201 and the imaging lens 100 are translated in a direction perpendicular to the optical axis 101 to achieve the anti-shake function.

[0098] In some embodiments, the autofocus drive coil may also be further electrically connected to the first elastic element and / or the third elastic element.

[0099] In some embodiments, the first elastic element may also be further electrically connected to the third elastic element to conduct through-hole circuitry.

[0100] The photosensitive element 17 is disposed on the imaging surface 102 and on the side of the base 1101 away from the housing element 1102. The photosensitive element 17 has an external contact 1700 as a contact for connecting to external power.

[0101] The distance between the point on the image sensor 17 furthest from the optical axis 101 of the imaging lens 100 and the optical axis 101 is defined as the maximum image height. The maximum image height is ImgH, which satisfies the following condition: ImgH = 5.16 [mm].

[0102] The imaging lens 100 has a maximum viewing angle corresponding to the maximum image height ImgH. The maximum viewing angle is FOV, which satisfies the following condition: FOV = 83.0 [degrees].

[0103] <Second Embodiment> Please refer to Figures 11 to 22 ,in Figure 11 This is a perspective view of a camera module according to a second embodiment of the present invention. Figure 12 yes Figure 11 An exploded view of the camera module. Figure 13 yes Figure 12 An exploded view of the imaging lens of the camera module. Figure 14 yes Figure 13 A schematic diagram showing the correspondence between some components of the imaging lens. Figure 15 yes Figure 13 Another corresponding diagram of the components of the imaging lens. Figure 16 yes Figure 11 A partially cut-out 3D schematic diagram of the camera module. Figure 17 yes Figure 16 A magnified schematic diagram of the partially cut-out camera module in the FF region, showing its orientation. Figure 18 yes Figure 16 A magnified schematic diagram of the partially cut-out camera module in the GG region, showing its upright orientation. Figure 19 yes Figure 16 A magnified schematic diagram of the partially cut-out camera module in the HH region, showing its upright orientation. Figure 20 yes Figure 16 A magnified schematic diagram of the partially cut-out camera module in region II, showing its upright orientation. Figure 21 yes Figure 16 A magnified schematic diagram of the partially cut camera module in the JJ region, showing its upright orientation. Figure 22 yes Figure 12 An exploded view of the image sensor module of the camera module.

[0104] This embodiment provides a camera module 2, which includes a fixed part 21, a movable part 22, an elastic element 23, an electrical connection element 24, a driving part 25, a filter element module 26, and a photosensitive element module 27.

[0105] The fixing part 21 includes a base 2101 and a housing element 2102. The base 2101 has a connecting circuit 2101a that can be electrically connected to an external circuit. The housing element 2102 is disposed on the base 2101 and together with the base 2101 forms an accommodating space (not otherwise labeled) to accommodate the movable part 22, the elastic element 23, the electrical connection element 24, and the driving part 25.

[0106] The movable part 22 is movable relative to the fixed part 21. Specifically, the movable part 22 includes an imaging lens 200 and a plurality of lenses 2202. The imaging lens 200 has an optical axis 201 and an imaging surface 202. The optical axis 201 passes through the imaging surface 202. The lenses 2202 are housed within the imaging lens 200. The elastic element 23 includes a first elastic element 23a and a second elastic element 23b. The first elastic element 23a is connected between the imaging lens 200 of the movable part 22 and the housing element 2102 of the fixed part 21, and as shown... Figure 19 As shown, the second elastic element 23b is connected between the imaging lens 200 of the movable part 22 and the base 2101 of the fixed part 21, so that the imaging lens 200 has the freedom to move in the direction of the optical axis 201.

[0107] The imaging lens 200 includes a lens carrier 210, a variable aperture group 220, a fixing element 230, and a drive mounting structure 240.

[0108] The lens carrier 210 includes a main body 211, a mounting structure 212, and two ferromagnetic elements 213. The main body 211 houses the lens 2202. The mounting structure 212 has a sliding surface 2123. Figure 15 As shown, the ferromagnetic element 213 is fixed inside the main body 211.

[0109] The variable through-hole assembly 220 includes multiple movable blades 221, a rotating element 222, two sets of electromagnetic pairs 224, and a through-hole circuit 225.

[0110] The fixing element 230 includes a first fixing element 230a and a second fixing element 230b. The first fixing element 230a is fixed to the lens carrier 210, and an accommodating space (not otherwise labeled) is formed between the first fixing element 230a and the lens carrier 210 to facilitate the assembly of the rotating element 222. The first fixing element 230a includes multiple shaft-like structures 2301. The second fixing element 230b has multiple positioning structures 2302 and multiple groove structures 2303. The positioning structures 2302 are respectively disposed on the shaft-like structures 2301 of the first fixing element 230a to achieve the effect of easy assembly. Furthermore, the second fixing element 230b and the first fixing element 230a form an accommodating space (not otherwise labeled) to facilitate the assembly of the movable blade 221.

[0111] The movable blade 221 has multiple rotating element corresponding holes 2211 and multiple fixing element corresponding holes 2213. The movable blade 221 movably surrounds the optical axis 201 to form a through-hole TH, and the through-hole TH has a variable size due to the movement of the movable blade 221. The through-hole TH is located at the aperture position of the imaging lens 200, thereby using the through-hole TH with a variable size as the physical aperture of the imaging lens 200. The aperture value of the imaging lens 200 is defined as FNO, and when the size of the through-hole TH is varied to its maximum, it satisfies the following condition: FNO = 1.6. In addition, the lens 2202 includes a positive lens 2202p. The positive lens 2202p has positive refractive power and is disposed adjacent to the through-hole TH.

[0112] The rotating element 222 comprises multiple shaft-like structures 2221 and has a low-friction characteristic surface 2222. For example... Figure 14 and Figure 20 As shown, the rotating element 222 is slidably located on the sliding surface 2123 of the mounting structure 212 via a low-friction feature surface 2222, and the coefficient of kinetic friction between the low-friction feature surface 2222 and the sliding surface 2123 is less than 0.52, providing the rotating element 222 with a degree of freedom of rotation relative to the lens carrier 210 in the rotational direction about the optical axis 201. The fixing element corresponding holes 2213 of the movable blade 221 are respectively disposed on the shaft-like structure 2301 of the first fixing element 230a. The rotating element corresponding holes 2211 of the movable blade 221 are respectively disposed on the shaft-like structure 2221 of the rotating element 222. The relative displacement between the shaft-like structure 2301 of the first fixing element 230a and the shaft-like structure 2221 of the rotating element 222 can drive the movable blade 221 to rotate and / or displace, thereby driving the movable blade 221 to adjust the size of the through hole TH. Furthermore, the shaft-shaped structure 2221 of the rotating element 222 is respectively provided in the groove structure 2303 of the second fixed element 230b to fix the rotation stroke of the rotating element 222 and prevent the movable blade 221 from falling off the shaft-shaped structure 2221 of the rotating element 222.

[0113] In this embodiment, the low-friction characteristic surface 2222 is achieved by coating the rotating element 222 with a low-friction coating. Furthermore, the low-friction characteristic surface 2222 can be a fluorocarbon coating (commonly known as Teflon), a carbon-based coating (such as diamond-like carbon (DLC), graphite-like carbon (GLC), amorphous carbon, graphene, etc.), etc., and the present invention is not limited thereto.

[0114] In some embodiments, the low-friction feature surface may also have multiple receiving structures to accommodate a larger amount of lubricating material after it has been coated on the low-friction feature surface, and to ensure that the lubricating material is evenly distributed, thereby further reducing the dynamic friction between the low-friction feature surface and the sliding surface. In some embodiments, the lubricating material may be lubricating oil, but the present invention is not limited thereto.

[0115] like Figure 17 As shown, the second fixed element 230b has a gap surface 2300. A gap GP is formed between the gap surface 2300 and the rotating element 222, and the movable blade 221 is disposed within the gap GP. The thickness of the gap GP is TG', and the thickness of each movable blade 221 is TB, which satisfies the following conditions: TG' = 0.13 [micrometers]; TB = 0.08 [micrometers]; and TG' - TB = 0.05 [micrometers]. In this embodiment, the movable blade 221 is as follows: Figure 13 As shown, the purpose of setting is achieved by the corresponding hole 2211 of the rotating element and the corresponding hole 2213 of the fixed element, but the present invention is not limited thereto. In some embodiments, the first fixed element or rotating element may also have a bearing surface, the movable blade is disposed on the bearing surface, and the arithmetic mean roughness (Ra) of the bearing surface is less than 0.25 micrometers.

[0116] Two sets of electromagnetic pairs 224 are arranged symmetrically to each other. Each set of electromagnetic pairs 224 includes a through-hole magnet 2241 and a through-hole coil 2242. For example... Figure 13 , Figure 15 and Figure 18 As shown, the through-hole magnet 2241 is disposed within the groove (unlabeled) of the rotating element 222, and is correspondingly disposed with respect to a portion of the ferromagnetic element 213 surrounding the optical axis 201. Figure 13 and Figure 18 As shown, the through-hole coil 2242 and the through-hole magnet 2241 are arranged opposite to each other.

[0117] Through-hole circuit 225 is electrically connected to through-hole coil 2242 to provide power for driving the rotation of rotating element 222. Through-hole circuit 225 includes a through-hole controller 2251, a position sensor 2253, and a circuit contact 2252. Through-hole controller 2251 includes control circuitry. Through-hole controller 2251 is located at the center of one of the through-hole coils 2242. The control circuitry of through-hole controller 2251 controls the through-hole coil 2242 to generate a magnetic field for driving the rotation of rotating element 222. Figure 13 and Figure 18As shown, the position sensor 2253, located at the center of another through-hole coil 2242, includes a position sensing circuit that is positioned opposite to the through-hole magnet 2241 to sense changes in the magnetic field of the through-hole magnet 2241, thereby determining the position of the rotating element 222. The through-hole circuit 225 is connected to external power through circuit contacts 2252 to provide power and signals to the variable through-hole assembly 220.

[0118] Electrical connection element 24 contains multiple conductive paths (unless otherwise labeled). For example... Figure 19 As shown, the conductive path of the electrical connection element 24 is electrically connected to the circuit contact 2252 of the through-hole circuit 225 and the communication circuit 2101a of the base 2101 of the fixing part 21, enabling the transmission of electrical signals. Furthermore, through the electrical connection of the communication circuit 2101a with an external circuit, the camera module 2 can be controlled by the electronic device to which it is to be applied to control the aperture size. In addition, in the direction of the optical axis 201, the elastic constant of the electrical connection element 24 is less than that of the elastic element 23.

[0119] The drive mounting structure 240 is disposed on the main body 211 of the lens carrier 210.

[0120] The drive unit 25 includes four drive magnets 2502 and a drive coil 2503. The drive magnets 2502 are disposed on the housing element 2102. The drive coil 2503 is disposed on the drive mounting structure 240. Figure 12 and Figure 19 As shown, the drive coil 2503 and the drive magnet 2502 are arranged opposite to each other, and the drive coil 2503 is electrically connected to the through-hole circuit 225 and the electrical connection element 24, thereby driving the main body 211 to move the imaging lens 200 in the direction of the optical axis 201 to achieve the focusing function.

[0121] The filter element module 26 includes a filter element frame 2601 and a filter element 2602. The filter element frame 2601 is disposed on the side of the base 2101 away from the housing element 2102. The filter element frame 2601 has a connecting circuit 2601a and an opening 2601b. The connecting circuit 2601a is electrically connected to the connecting circuit 2101b, and as shown... Figure 19 and Figure 21 As shown, the connecting circuit 2101a can be electrically connected to an external circuit through the connecting circuit 2601a. ​​The filter element 2602 is disposed in the opening 2601b of the filter element frame 2601, and the filter element 2602 allows imaging light to pass through in order to filter out light of a specific wavelength.

[0122] Photosensitive element module 27 Figure 21 and Figure 22The device shown includes an external connection point 2700, a photosensitive element frame 2701, multiple photosensitive element elastic elements 2702, a photosensitive element 2703, and a photosensitive element electrical connection element 2704.

[0123] An external contact 2700 is provided on the photosensitive element frame 2701 and serves as a contact for connecting to external power.

[0124] A photosensitive element frame 2701 is disposed on the side of the filter element frame 2601 away from the base 2101. The photosensitive element frame 2701 has multiple base contacts 2701a and multiple photosensitive element contacts 2701b. Base contacts 2701a are electrically connected to external contacts 2700, the connection circuit 2601a of the filter element frame 2601, and the connection circuit 2101a of the base 2101 to provide external power to the through-hole coil 2242, the through-hole circuit 225, the electrical connection element 24, and the drive coil 2503. Photosensitive element contacts 2701b are electrically connected to external contacts 2700.

[0125] The photosensitive element elastic element 2702 mechanically connects the photosensitive element frame 2701 and the photosensitive element 2703, thereby providing the photosensitive element 2703 with respect to the photosensitive element frame 2701 in a direction perpendicular to the optical axis 201.

[0126] The photosensitive element 2703 is disposed on the imaging surface 202 of the imaging lens 200.

[0127] Photosensitive element electrical connection element 2704 electrically connects photosensitive element 2703 and photosensitive element contact 2701b to transmit the image signal obtained by photosensitive element 2703 to the outside.

[0128] In this embodiment, the shockproof function can be achieved by moving the photosensitive element 2703. The photosensitive element 2703 and the photosensitive element frame 2701 can be connected by providing the power required to move the photosensitive element 2703 through an electromagnetic actuator (VCM, Voice Coil Motor), shape memory alloy (SMA, Shape Memory Alloys), or piezoelectric material, but the present invention is not limited to the above methods.

[0129] The distance between the point on the image sensor 2703 furthest from the optical axis 201 of the imaging lens 200 and the optical axis 201 is defined as the maximum image height. The maximum image height is ImgH, which satisfies the following condition: ImgH = 3.1 [mm].

[0130] The imaging lens 200 has a maximum angle of view corresponding to the maximum image height ImgH. The maximum angle of view is FOV, which satisfies the following condition: FOV = 46.1 [degrees].

[0131] <Third Embodiment> Please refer to Figures 23 to 33 ,in Figure 23 This is a perspective view of a camera module according to a third embodiment of the present invention. Figure 24 yes Figure 23 An exploded view of the camera module. Figure 25 yes Figure 24 An exploded view of the imaging lens of the camera module. Figure 26 yes Figure 24 A schematic diagram showing the correspondence between some components of the imaging lens. Figure 27 yes Figure 24 Another corresponding diagram of the components of the imaging lens. Figure 28 yes Figure 23 A partially cut-out 3D schematic diagram of the camera module. Figure 29 yes Figure 28 A magnified schematic diagram of the partially cut-out camera module in the KK region, showing its upright orientation. Figure 30 yes Figure 28 A magnified schematic diagram of the partially cut-out camera module in the LL region, showing its upright orientation. Figure 31 yes Figure 28 A magnified schematic diagram of the partially cut-out camera module in the MM region, showing its upright orientation. Figure 32 yes Figure 28 A magnified schematic diagram of the partially sectional camera module in the NN region, showing its upright orientation. Figure 33 yes Figure 28 A magnified schematic diagram of the partially cut-out camera module in the OO region.

[0132] This embodiment provides a camera module 3, which includes a fixed part 31, a movable part 32, a driving part 35, and a photosensitive element 37.

[0133] The fixing part 31 includes a fixing frame 3100, a housing element 3102, and a conductive terminal element 3103. The housing element 3102 is disposed on the fixing frame 3100 and together with the fixing frame 3100 forms an accommodating space (not otherwise labeled) to accommodate the movable part 32 and the driving part 35. The conductive terminal element 3103 is disposed on the side of the housing element 3102 away from the fixing frame 3100. The conductive terminal element 3103 has a plurality of conductive terminals 3103a electrically connected to each other and an external contact point 3103b.

[0134] The movable part 32 is movable relative to the fixed part 31. Specifically, the movable part 32 includes a movable part frame 3200, an imaging lens 300, multiple lenses 3202, multiple first rolling elements 3203, multiple second rolling elements 3204, multiple groove structures 3205, and multiple conductive colloids 3206. The imaging lens 300 is housed within the movable part frame 3200. The imaging lens 300 has an optical axis 301 and an imaging surface 302. The optical axis 301 passes through the imaging surface 302. The lenses 3202 are housed within the imaging lens 300. Figure 24 and Figure 31 As shown, the first rolling element 3203 contacts the movable frame 3200 and the imaging lens 300, giving the imaging lens 300 a degree of freedom to move in a direction perpendicular to the optical axis 301. Figure 24 and Figure 31 As shown, the second rolling element 3204 contacts between the fixed frame 3100 and the movable frame 3200, so that the imaging lens 300 has the freedom to move in the direction of the optical axis 301.

[0135] The imaging lens 300 includes a lens carrier 310, a variable aperture group 320, and four drive mounting structures 340.

[0136] The lens carrier 310 includes a main body 311, a mounting structure 312, and two ferromagnetic elements 313. The main body 311 houses the lens 3202. The mounting structure 312 includes a first mounting structure 312a and a second mounting structure 312b. Figure 25 and Figure 32 As shown, the first mounting structure 312a has multiple recesses 3121. (As indicated...) Figure 25 As shown, the second mounting structure 312b includes multiple shaft-like structures 3122. For example... Figure 27 As shown, the ferromagnetic element 313 has a fixing structure 3131. The ferromagnetic element 313 is fixed inside the main body 311 by the fixing structure 3131.

[0137] The variable through-hole assembly 320 includes multiple movable blades 321, a rotating element 322, three spherical rolling elements 323, two sets of electromagnetic pairs 324, and a through-hole circuit 325.

[0138] The movable blade 321 has multiple rotating element corresponding holes 3211 and multiple lens carrier corresponding holes 3212. The movable blade 321 movably surrounds the optical axis 301 to form a through-hole TH, and the through-hole TH has a variable size due to the movement of the movable blade 321. The through-hole TH is located at the aperture position of the imaging lens 300, thereby using the through-hole TH with a variable size as the physical aperture of the imaging lens 300. The aperture value of the imaging lens 300 is defined as FNO, and when the size of the through-hole TH is varied to its maximum, it satisfies the following condition: FNO = 2.25. In addition, the lens 3202 includes a positive lens 3202p. The positive lens 3202p has positive refractive power and is disposed adjacent to the through-hole TH.

[0139] The rotating element 322 includes multiple shaft-like structures 3221 and multiple groove structures 3223. For example... Figure 25 and Figure 32 As shown, the rolling element 323 is disposed in the groove 3121 and arranged around the through hole TH. The rolling element 323, disposed between the first mounting structure 312a and the rotating element 322, provides the rotating element 322 with a degree of freedom of rotation relative to the lens carrier 310 in the rotational direction about the optical axis 301. Figure 25 and Figure 26 As shown, the lens carrier corresponding to the hole 3212 of the movable blade 321 is respectively disposed on the shaft structure 3122 of the second mounting structure 312b. Figure 26 As shown, the rotating elements of the movable blade 321 are respectively provided with corresponding holes 3211 on the shaft-like structure 3221 of the rotating element 322. The relative displacement between the shaft-like structure 3122 of the second mounting structure 312b and the shaft-like structure 3221 of the rotating element 322 can drive the movable blade 321 to rotate and / or displace, thereby driving the movable blade 321 to adjust the size of the through hole TH. Furthermore, as... Figure 26 As shown, the shaft-shaped structure 3122 of the second mounting structure 312b is respectively disposed on the groove structure 3223 of the rotating element 322 to fix the rotation stroke of the rotating element 322 and prevent the movable blade 321 from falling off the shaft-shaped structure 3122 of the second mounting structure 312b.

[0140] like Figure 29As shown, the second mounting structure 312b has a gap surface 3120. A gap GP is formed between the gap surface 3120 and the rotating element 322, and the movable blade 321 is disposed within the gap GP. The thickness of the gap GP is TG, and the thickness of each movable blade 321 is TB, which satisfies the following conditions: TG = 0.19 [micrometers]; TB = 0.08 [micrometers]; and TG-TB = 0.11 [micrometers]. In this embodiment, the gap GP accommodates two stacked movable blades 321 simultaneously in some cases. In this embodiment, the movable blade 321 is as follows: Figure 25 and Figure 26 As shown, the purpose of setting is achieved by rotating the corresponding hole 3211 of the element and the corresponding hole 3212 of the lens carrier, but the present invention is not limited thereto. In some embodiments, the second mounting structure may also have a bearing surface, on which the movable blade is disposed, and the arithmetic mean roughness (Ra) of the bearing surface is less than 0.25 micrometers.

[0141] Two sets of electromagnetic pairs 324 are arranged symmetrically to each other. Each set of electromagnetic pairs 324 includes a through-hole magnet 3241 and a through-hole coil 3242. For example... Figure 25 , Figure 27 and Figure 30 As shown, the through-hole magnet 3241 is disposed in the groove (unlabeled) of the rotating element 322, and is correspondingly disposed with respect to a portion of the ferromagnetic element 313 surrounding the optical axis 301. Figure 30 As shown, the through-hole coil 3242 and the through-hole magnet 3241 are arranged opposite to each other.

[0142] The through-hole circuit 325 is electrically connected to the through-hole coil 3242 to provide power for driving the rotation of the rotating element 322. The through-hole circuit 325 includes two through-hole controllers 3251 and multiple circuit contacts 3252. The through-hole controllers 3251 integrate control circuitry and position sensing circuitry (not otherwise labeled). The through-hole controllers 3251 are located at the center of the through-hole coil 3242. The control circuitry of the through-hole controllers 3251 controls the through-hole coil 3242 to generate a magnetic field for driving the rotation of the rotating element 322. Figure 30 As shown, the position sensing circuit of the through-hole controller 3251 is positioned opposite to the through-hole magnet 3241 to sense changes in the magnetic field of the through-hole magnet 3241, thereby determining the position of the rotating element 322. The through-hole circuit 325 is connected to external power through circuit contacts 3252 to provide power and signals to the variable through-hole assembly 320.

[0143] Specifically, the groove structure 3205 is located in the main body 311 of the lens carrier 310. For example... Figure 33As shown, conductive colloid 3206 is disposed within the groove structure 3205. Conductive terminal 3103a extends to conductive colloid 3206. Circuit contact 3252 of through-hole circuit 325 is connected to external power via conductive colloid 3206, conductive terminal 3103a, and external contact 3103b.

[0144] The drive mounting structure 340 is disposed on the main body 311 of the lens carrier 310.

[0145] The drive unit 35 includes a drive unit frame 3500, four drive magnets 3502, and three drive coils 3503. The drive unit frame 3500 has a drive circuit 3500a, an external connection point 3500b, and a drive controller 3500c. The drive magnets 3502 are disposed in the drive mounting structure 340. The drive coils 3503 are disposed in the drive unit frame 3500. Figure 31 As shown, the drive coil 3503 is disposed opposite to the drive magnet 3502, and the drive coil 3503 is electrically connected to the drive circuit 3500a and the external connection point 3500b to connect to external power. Furthermore, the drive controller 3500c is electrically connected to the drive circuit 3500a and controls the drive coil 3503 through the drive circuit 3500a to generate a magnetic field for driving the main body 311 to move.

[0146] Depending on the direction of the magnetic poles of the driving magnet 3502, the imaging lens 300 can be moved along the optical axis 301 to achieve focusing, or the imaging lens 300 can be moved in a direction perpendicular to the optical axis 301 to achieve image stabilization. Specifically, such as... Figure 24 and Figure 31 As shown, two drive coils 3503 are paired with two drive magnets 3502 to provide power for the imaging lens 300 to move in a direction perpendicular to the optical axis 301. Another drive coil 3503 is paired with another drive magnet 3502 to provide power for the imaging lens 300 to move in the direction of the optical axis 301. Another drive magnet 3502 not paired with a drive coil 3503 is correspondingly configured with the position sensing circuit of the drive controller 3500c to sense the position of the imaging lens 300. However, the above magnetic circuit configuration is merely illustrative and is not intended to limit the invention.

[0147] The photosensitive element 37 is disposed on the imaging surface 302 and on the side of the fixing frame 3100 away from the housing element 3102. The photosensitive element 37 has an external contact 3700 for connecting to external power.

[0148] The distance between the point on the image sensor 37 furthest from the optical axis 301 of the imaging lens 300 and the optical axis 301 is defined as the maximum image height. The maximum image height is ImgH, which satisfies the following condition: ImgH = 3.28 [mm].

[0149] The imaging lens 300 has a maximum viewing angle corresponding to the maximum image height ImgH. The maximum viewing angle is FOV, which satisfies the following condition: FOV = 80.4 [degrees].

[0150] <Fourth Embodiment> Please refer to Figures 34 to 36 ,in Figure 34 A perspective schematic diagram of an electronic device according to a fourth embodiment of the present invention is shown. Figure 35 Draw Figure 34 A three-dimensional diagram of the other side of the electronic device, and Figure 36 Draw Figure 34 System block diagram of an electronic device.

[0151] In this embodiment, the electronic device 4 is a mobile device, which can be a computer, smartphone, smart wearable device, drone, or vehicle-mounted image recording and display instrument, etc., and the present invention is not limited thereto. The electronic device 4 includes a variable aperture camera module 40a, a wide-angle camera module 40b, a macro camera module 40c, a miniature camera module 40d, a Time-of-Flight (ToF) camera module 40e, a flash module 42, a focus assist module 43, an image signal processor (not otherwise labeled), a display device 45, an image software processor (not otherwise labeled), and a biometric sensor 47. The variable aperture camera module 40a is, for example, the camera module 1 of the first embodiment, but the present invention is not limited thereto. Camera modules 40b, 40c, 40d, and 40e can also be, for example, camera modules of other embodiments of the present invention described above.

[0152] Camera modules 40a, 40b, and 40c are all located on the same side of the electronic device 4. Camera modules 40d, 40e, and display device 45 are all located on the other side of the electronic device 4, and the display device 45 may serve as a user interface so that camera modules 40d and 40e can function as front-facing lenses to provide selfie functionality, but the present invention is not limited thereto.

[0153] In this embodiment, camera modules 40a, 40b, and 40c have different viewing angles, allowing the electronic device 4 to provide different magnifications to achieve optical zoom shooting effects. For example, the wide-angle camera module 40b has a wider maximum viewing angle, and the images it captures can be referenced... Figure 37 The illustration shows an image captured by the electronic device 4 with a wide-angle camera module 40b, in which the captured image includes the entire church, surrounding buildings and people in the square. Figure 37The images captured have a wide angle of view and depth of field, but are often accompanied by significant distortion. Images taken by the variable aperture camera module 40a at smaller aperture values ​​can be referenced. Figure 38 For images captured at larger aperture values, please refer to... Figure 39 . Figure 38 A schematic diagram is shown of an image captured by electronic device 4 using a variable aperture camera module 40a at an aperture value of f / 1.4. Figure 39 The illustration shows an image captured by electronic device 4 using a variable aperture camera module 40a at an aperture value of f / 5.6. The captured image includes a flock of birds flying in front of the church. Figure 38 As shown, when the variable aperture of the variable aperture camera module 40a provides a large opening for light, the electronic image sensor receives more light, but the background is relatively blurry. Figure 39 As shown, when the variable aperture of the variable aperture camera module 40a provides a smaller light-passing hole, the electronic photosensitive element receives less light, but a clearer background is obtained. Figure 38 and Figure 39 The image has a small angle of view and depth of field, allowing the variable aperture camera module 40a to be used to photograph moving targets. The lens driver drives the lens group to quickly and continuously autofocus on the target, ensuring that the target is not blurred even when it moves away from the focus position. During image capture, the variable aperture camera module 40a can further perform optical zoom on the subject to obtain a clearer image. In addition, the time-of-flight ranging camera module 40e can acquire depth information from the image. The above-described electronic device 4 is an example containing multiple camera modules 40a, 40b, 40c, 40d, and 40e, but the number and configuration of the camera modules are not intended to limit the invention.

[0154] When the user photographs the subject OBJ, the electronic device 4 uses camera module 40a, camera module 40b, or camera module 40c to focus the light for image capture, activates flash module 42 for supplemental lighting, and uses the subject distance information of the subject OBJ provided by focus assist module 43 for fast focusing. Furthermore, the image signal processor performs image optimization processing to further improve the image quality produced by the lens group. Focus assist module 43 can employ an infrared or laser focus assist system to achieve fast focusing.

[0155] In addition, the electronic device 4 can also take pictures using camera module 40d or camera module 40e. When camera module 40d or camera module 40e is taking pictures, an indicator light 4a can illuminate to remind the user that the electronic device 4 is taking pictures. The display device 45 can use a touch screen or a physical shooting button with zoom control key 451 and focus / shooting button 452, and can perform image shooting and image processing in conjunction with the diverse functions of the image software processor. The image processed by the image software processor can be displayed on the display device 45. The user can also replay previously captured images using the image playback button 453 on the display device 45, select a suitable camera module for shooting using the camera module switching button 454, and adjust the shooting conditions for the current shooting scene using the integrated menu button 455.

[0156] Furthermore, the electronic device 4 also includes a circuit board 48, and the circuit board 48 carries multiple electronic components 49. Camera modules 40a, 40b, 40c, 40d, and 40e are electrically connected to the electronic components 49 via connectors 481 on the circuit board 48. Each electronic component 49 may include a signal transmitting module, which can transmit images to other electronic devices or cloud storage. The signal transmitting module may be a Wireless Fidelity (WiFi) module, a Bluetooth module, an infrared module, a network service module, or an integrated module combining multiple such signal transmitting methods; this invention is not limited to these.

[0157] Electronic component 49 may also include a storage unit, random access memory to store image signals, a gyroscope, and a position locator to facilitate navigation or positioning of electronic device 4. In this embodiment, the image signal processor, image software processor, and random access memory are integrated into a single-chip system 44, but the invention is not limited to this configuration. In some other embodiments, the electronic component may also be integrated into the camera module or disposed on one of multiple circuit boards. In addition, biometric sensor 47 can provide functions such as powering on and unlocking electronic device 4.

[0158] The camera module of this invention is not limited to applications in smartphones. It can also be applied to mobile focusing systems as needed, offering both excellent aberration correction and good image quality. For example, the camera module can be used in various electronic devices such as 3D image capture, digital cameras, mobile devices, digital computers, smart TVs, network monitoring equipment, dashcams, reversing cameras, multi-lens devices, recognition systems, motion-sensing game consoles, and wearable devices. The aforementioned electronic devices are merely illustrative examples of practical applications of this invention and do not limit the scope of application of the camera module.

[0159] Although the present invention has been disclosed above with reference to the foregoing embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be determined by the claims of this specification.

Claims

1. An imaging lens, characterized in that, Having an optical axis, the imaging lens comprises: A lens carrier for mounting at least one lens, wherein the lens carrier includes a mounting structure; A variable through-hole group, comprising: Multiple movable blades are movably arranged together around the optical axis to form a through hole, wherein the through hole has a variable size due to the movement of the movable blades; as well as A rotating element connected to the movable blade, wherein the rotating element drives the movable blade to adjust the size of the through hole; and A fixed element is fixed relative to the lens carrier, wherein the fixed element has a gap surface, and one of the mounting structure and the rotating element forms a gap with the gap surface, and the movable blade is disposed in the gap; The rotating element is sleeved on at least a portion of the lens carrier and disposed on the mounting structure; The mounting structure includes multiple shaft-shaped structures, and the movable blades are disposed on the mounting structure and respectively disposed on the shaft-shaped structures. Wherein, the thickness of the gap is TG', and the thickness of each movable blade is TB, which satisfies the following conditions: 0.002 micrometers ≤ TG'-TB ≤ 0.3 micrometers.

2. The imaging lens according to claim 1, characterized in that, The relative displacement between the shaft structure and the rotating element drives the movable blade to rotate.

3. The imaging lens according to claim 1, characterized in that, The mounting structure has a bearing surface, and the movable blade is disposed on the bearing surface; The arithmetic mean roughness of the bearing surface is less than 0.25 micrometers.

4. The imaging lens according to claim 1, characterized in that, The variable through-hole assembly also includes a plurality of rolling elements, which are disposed between the mounting structure and the rotating element and arranged around the through-hole to provide the rotating element with degrees of freedom in the rotation direction.

5. The imaging lens according to claim 1, characterized in that, The mounting structure has a sliding surface, and the rotating element is slidably located on the sliding surface; The coefficient of dynamic friction between the rotating element and the sliding surface is less than 0.

52.

6. The imaging lens according to claim 1, characterized in that, The through-hole is located at the aperture position of the imaging lens.

7. The imaging lens according to claim 6, characterized in that, The aperture value of the imaging lens is FNO, which satisfies the following conditions: FNO ≥ 1.

1.

8. The imaging lens according to claim 1, characterized in that, The at least one lens includes a positive lens, and the positive lens is disposed adjacent to the through hole.

9. The imaging lens according to claim 1, characterized in that, The variable through-hole assembly further includes an electromagnetic pair and a through-hole circuit. The electromagnetic pair includes a through-hole magnet and a through-hole coil. The through-hole magnet is disposed on the rotating element. The through-hole coil is disposed opposite to the through-hole magnet, and the through-hole coil is electrically connected to the through-hole circuit to drive the rotating element to rotate.

10. The imaging lens according to claim 9, characterized in that, The through-hole circuit includes a control circuit, and the control circuit controls the through-hole coil to generate a magnetic field.

11. The imaging lens according to claim 9, characterized in that, The through-hole circuit includes a position sensing circuit, and the position sensing circuit senses the position of the rotating element.

12. The imaging lens according to claim 9, characterized in that, The number of electromagnetic pairs is two, and the two electromagnetic pairs are arranged symmetrically to each other.

13. The imaging lens according to claim 9, characterized in that, The lens carrier also includes a ferromagnetic element, and the ferromagnetic element is arranged correspondingly to the through-hole magnet.

14. A camera module, characterized in that, Include: The imaging lens according to claim 9.

15. The camera module according to claim 14, characterized in that, Also includes: One fixed part; A movable part, movable relative to the fixed part, wherein the movable part includes the imaging lens; and An elastic element connects the fixed part and the movable part to provide the movable part with a degree of freedom in at least one direction; The elastic element is conductive and is electrically connected to the through-hole circuit.

16. The camera module according to claim 14, characterized in that, Also includes: One fixed part; A movable part is movable relative to the fixed part, wherein the movable part includes the imaging lens; An elastic element connects the fixed part and the movable part to provide the movable part with a degree of freedom in at least one direction; and An electrical connection element comprising multiple conductive paths, the conductive paths electrically connecting the through-hole circuit and the fixing part; In the direction of the optical axis, the elastic constant of the electrical connection element is smaller than the elastic constant of the elastic element.

17. The camera module according to claim 14, characterized in that, Also includes: A fixing part, including a conductive terminal; and A movable part is movable relative to the fixed part, wherein the movable part includes the imaging lens, a groove structure and a conductive colloid, and the conductive colloid is disposed in the groove structure; The conductive terminal extends to the conductive colloid, and the conductive terminal is electrically connected to the through-hole circuit through the conductive colloid.

18. The camera module according to claim 17, characterized in that, The conductive colloid is a damping material.

19. The camera module according to claim 14, characterized in that, Also includes: One fixed part; A movable part, movable relative to the fixed part, wherein the movable part includes the imaging lens; and A driving unit includes a driving magnet and a driving coil, wherein the driving magnet and the driving coil are disposed opposite to each other. The lens carrier further includes a drive mounting structure, and one of the drive magnet and the drive coil is disposed in the drive mounting structure.

20. The camera module according to claim 19, characterized in that, The drive coil is mounted on the drive mounting structure and is electrically connected to the through-hole circuit.

21. The camera module according to claim 14, characterized in that, It also includes a photosensitive element, wherein the photosensitive element is disposed on an imaging surface of the imaging lens, and the distance between the point of the photosensitive element furthest from the optical axis of the imaging lens and the optical axis is defined as a maximum image height, wherein the maximum image height is 1 mgH, and satisfies the following condition: ImgH ≥ 2 mm.

22. The camera module according to claim 21, characterized in that, The imaging lens has a maximum angle of view, which corresponds to the maximum image height. The maximum angle of view is the field of view (FOV), and it satisfies the following conditions: FOV ≤ 100 degrees.

23. An electronic device, characterized in that, Include: The camera module according to claim 14.

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