Lens driving module, camera lens and electronic device

Abstract

This invention discloses a lens driving module, a camera lens, and an electronic device. The lens driving module provides an autofocus function for the imaging lens. The imaging lens is located between a preload element and a driving base of the lens driving module. The preload element includes an injection-molded part and a ferromagnetic part. The mounting structure of the injection-molded part has a rolling element that contacts the lens carrier of the imaging lens. The ferromagnetic part is at least partially embedded in the injection-molded part and generates a magnetic attraction force with a magnet on the lens carrier, causing the lens carrier to apply a preload force to the rolling element. The driving base and the preload element are located on opposite sides of the lens carrier in the preload direction. The driving base includes coils and circuit wiring that are electrically connected to each other. The coils and magnets are correspondingly arranged and generate a driving force to drive the lens carrier to move along the optical axis. The coils and the rolling element are located on opposite sides of the lens carrier in the preload direction. The camera lens has the above-described lens driving module, and the electronic device has the above-described camera lens.

Description

Technical Field

[0001] This invention relates to a lens driving module, a camera lens, and an electronic device, particularly a lens driving module and a camera lens 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, with the rapid development of technology, mobile devices equipped with optical lenses are being used in a wider range of applications, leading to more diverse requirements for these lenses.

[0003] In recent years, electronic products have trended towards thinner and lighter designs. However, traditional optical lenses, especially telephoto lenses, can no longer simultaneously meet the demands of miniaturization and high image quality. Modern camera modules often feature autofocus, optical image stabilization, and zoom capabilities. However, to achieve these functions, the structure of the camera module has become relatively complex, and its size has increased accordingly, resulting in a larger electronic device. Specifically, to achieve autofocus and zoom functions, a predetermined length of travel space must be designed along the optical axis within the camera module. However, due to the size limitations of camera modules, it is difficult to simultaneously meet the requirements of long travel and miniaturization. Summary of the Invention

[0004] In view of the above-mentioned problems, the present invention discloses a lens driving module, a camera lens and an electronic device, which has the characteristic of a long drive stroke, which helps to drive imaging lenses with longer focal lengths to provide the imaging lens with autofocus function. In addition, the configuration of its components can increase space utilization to maintain the miniaturization of the module.

[0005] This invention provides a lens driving module for providing autofocus functionality for an imaging lens. The imaging lens includes multiple lenses and at least one movable lens carrier. The lenses are arranged along an optical axis of the imaging lens. The movable lens carrier houses at least one of the lenses and is movable along the optical axis. The lens driving module includes a preload element, a driving base, and at least one first magnet. The imaging lens is disposed between the preload element and the driving base, and the first magnet is disposed on the movable lens carrier. The preload element includes an injection-molded part and a ferromagnetic part. The injection-molded part has multiple mounting structures, each of which has at least one rolling element, wherein the rolling element contacts the movable lens carrier and provides the movable lens carrier with a degree of freedom to move along the optical axis. The ferromagnetic part is at least partially embedded in the injection-molded part, and the ferromagnetic part and the first magnet together generate a magnetic attraction force, causing the movable lens carrier to apply a preload force to the rolling element. The driving base and the preload element are respectively disposed on opposite sides of the movable lens carrier in the direction of the preload force. The drive base includes at least one drive coil and a circuit wiring. The drive coil is correspondingly disposed with a first magnet to jointly generate a driving force to drive the movable lens carrier to move along the optical axis. The circuit wiring is electrically connected to the drive coil. Furthermore, the drive coil and the rolling element are respectively disposed on opposite sides of the movable lens carrier in the direction of the preload.

[0006] This invention provides a camera lens comprising the aforementioned lens driving module, an imaging lens, and a light-deflecting element. The imaging lens includes a plurality of lenses and at least one movable lens carrier. The lenses are arranged along an optical axis of the imaging lens. The movable lens carrier houses at least one of the lenses and is movable along the optical axis. The light-deflecting element is located on the object side or image side of the imaging lens.

[0007] The present invention further provides a lens driving module for providing autofocus functionality for an imaging lens. The imaging lens includes a plurality of lenses and at least one movable lens carrier. The lenses are arranged along an optical axis of the imaging lens. The movable lens carrier houses at least one of the lenses and is movable along the optical axis. The lens driving module includes a preload element, a driving base, at least one first magnet, and at least one second magnet. The imaging lens is disposed between the preload element and the driving base, and both the first and second magnets are disposed on the movable lens carrier. The preload element includes an injection-molded component and a ferromagnetic component. The injection-molded component has a plurality of mounting structures, each mounting structure having at least one rolling element, wherein the rolling element contacts the movable lens carrier and provides the movable lens carrier with a degree of freedom to move along the optical axis. The ferromagnetic component is at least partially embedded in the injection-molded component, and the ferromagnetic component and the second magnet together generate a magnetic attraction force, causing the movable lens carrier to apply a preload force to the rolling element. A drive base and a preload element are respectively disposed on opposite sides of the movable lens carrier in the direction of the preload. The drive base includes at least one drive coil and a circuit wiring. The drive coil is correspondingly disposed with a first magnet to jointly generate a driving force to drive the movable lens carrier to move along the optical axis. The first magnet is farther away from the ferromagnetic element than the second magnet. The circuit wiring is electrically connected to the drive coil. Furthermore, the drive coil and the rolling element are respectively disposed on opposite sides of the movable lens carrier in the direction of the preload.

[0008] The present invention also provides a camera lens, comprising the aforementioned lens driving module, an imaging lens, and a light-deflecting element. The imaging lens includes a plurality of lenses and at least one movable lens carrier. The lenses are arranged along an optical axis of the imaging lens. The movable lens carrier houses at least one of the lenses and is movable along the optical axis. The light-deflecting element is located on the object side or image side of the imaging lens.

[0009] The present invention provides an electronic device comprising the aforementioned camera lens and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the imaging lens.

[0010] According to the lens drive module, camera lens, and electronic device disclosed in this invention, the above-described configuration avoids spatial interference between the rolling element and the coil carrier, thereby extending the travel of the lens drive module in driving the movable lens carrier. Furthermore, by attaching the movable lens carrier to the housing of the lens drive module and providing the movable lens carrier with freedom of movement along the optical axis, jitter in the non-optical axis direction during movement of the movable lens carrier can be reduced. In addition, by dividing the lens drive module into a preload element and a drive base, during assembly, the position of the imaging lens in the preload element can be corrected first by aligning with the electronic photosensitive element before assembling the drive base, thereby reducing cumulative tolerances. This is especially beneficial when the imaging lens has multiple movable lens carriers, thereby improving the yield rate.

[0011] Furthermore, the preload element with ferromagnetic components can integrate multiple functions such as protecting the movable lens carrier and circuit, attracting and correcting the position of the movable lens carrier, and reducing signal interference with surrounding electronic components. Through the spatial arrangement of the coil, magnet and ferromagnetic components, interference of the movement stroke can be further reduced and space utilization can be increased, thereby reducing the size of the lens drive module.

[0012] The foregoing description of the disclosure and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the present invention, and to provide a further explanation of the scope of the patent application of the present invention. Attached Figure Description

[0013] Figure 1 A perspective view of a camera lens and an electronic photosensitive element according to a first embodiment of the present invention is shown.

[0014] Figure 2 Draw Figure 1 An exploded view of the imaging lens and lens drive module.

[0015] Figure 3 Draw Figure 2 An exploded view of the drive base.

[0016] Figure 4 Draw Figure 1 An exploded view of the other side of the imaging lens and lens drive module.

[0017] Figure 5 Draw Figure 2 A partial cross-sectional schematic diagram of the preloaded element.

[0018] Figure 6 Draw Figure 1 A cross-sectional view of the lens drive module along section line 6-6.

[0019] Figure 7 Draw Figure 1 A cross-sectional view of the imaging lens and lens drive module along section line 6-6.

[0020] Figure 8 Draw Figure 1 A cross-sectional view of the imaging lens and lens drive module along section line 8-8.

[0021] Figure 9 Draw Figure 1 A cross-sectional view of the imaging lens and lens drive module along section line 9-9.

[0022] Figure 10 Draw Figure 1 A side view of the imaging lens and the first magnet.

[0023] Figure 11 A perspective view of a camera lens and an electronic photosensitive element according to a second embodiment of the present invention is shown.

[0024] Figure 12 Draw Figure 11 An exploded view of the imaging lens and lens drive module.

[0025] Figure 13 Draw Figure 12 A partial cross-sectional view of the drive base.

[0026] Figure 14 Draw Figure 11 An exploded view of the other side of the imaging lens and lens drive module.

[0027] Figure 15 Draw Figure 12 A partial cross-sectional schematic diagram of the preloaded element.

[0028] Figure 16 Draw Figure 11 A cross-sectional view of the lens drive module along section line 16-16.

[0029] Figure 17 Draw Figure 11 A cross-sectional view of the imaging lens and lens drive module along section line 16-16.

[0030] Figure 18 Draw Figure 11 A cross-sectional view of the imaging lens and lens drive module along section line 18-18.

[0031] Figure 19 Draw Figure 11 A cross-sectional view of the imaging lens and lens drive module along section line 19-19.

[0032] Figure 20A perspective view of an imaging lens, a lens driving module, and a photosensitive element module according to a third embodiment of the present invention is shown.

[0033] Figure 21 Draw Figure 20 A partial exploded and partially cutaway schematic diagram of the imaging lens, lens drive module, and photosensitive element module.

[0034] Figure 22 Draw Figure 21 An exploded view of the other side of the preload element.

[0035] Figure 23 Draw Figure 20 An exploded view of the imaging lens, lens drive module, and photosensitive element module.

[0036] Figure 24 Draw Figure 23 An exploded view of the drive base.

[0037] Figure 25 Draw Figure 20 A cross-sectional view of the lens drive module along section line 25-25.

[0038] Figure 26 Draw Figure 20 A cross-sectional view of the imaging lens, lens drive module, and photosensitive element module along section line 26-26.

[0039] Figure 27 Draw Figure 20 A cross-sectional view of the imaging lens, lens drive module, and photosensitive element module along section line 27-27.

[0040] Figure 28 Draw Figure 20 A cross-sectional view of the imaging lens and lens drive module along section line 28-28.

[0041] Figure 29 Draw Figure 20 A cross-sectional view of the imaging lens and lens drive module along section line 29-29.

[0042] Figure 30 Draw Figure 20 A partial cross-sectional schematic diagram of the imaging lens, lens drive module, and photosensitive element module.

[0043] Figure 31 and Figure 32 A schematic diagram illustrating the operation of the movable lens carrier in an embodiment where the second magnets attract each other.

[0044] Figure 33 A schematic diagram illustrating another implementation of the second magnet attracting each other.

[0045] Figure 34 and Figure 35 A schematic diagram illustrating the operation of the movable lens carriers in an embodiment where the second magnets disposed on the second and third movable lens carriers repel each other.

[0046] Figure 36 Draw Figure 20 A three-dimensional schematic diagram of the photosensitive element module.

[0047] Figure 37 Draw Figure 36 A front view schematic diagram of the photosensitive element module.

[0048] Figure 38 Draw Figure 36 The rear view diagram of the photosensitive element module without the drive base.

[0049] Figure 39 Draw Figure 36 An exploded view of the photosensitive element module.

[0050] Figure 40 Draw Figure 36 An exploded view of the other side of the photosensitive element module.

[0051] Figure 41 A perspective view of an electronic device according to a fourth embodiment of the present invention is shown.

[0052] Figure 42 Draw Figure 41 A three-dimensional diagram of the other side of the electronic device.

[0053] Figure 43 Draw Figure 41 System block diagram of an electronic device.

[0054] Figure 44 Draw Figure 41 A schematic diagram of an image captured by an electronic device with an equivalent focal length between 11mm and 14mm.

[0055] Figure 45 Draw Figure 41 A schematic diagram of an image captured by an electronic device with an equivalent focal length between 22mm and 30mm.

[0056] Figure 46 Draw Figure 41 An illustration of an image captured by an electronic device at an equivalent focal length between 60mm and 300mm.

[0057] Figure 47 Draw Figure 41 An illustration of an image captured by an electronic device at an equivalent focal length between 400mm and 600mm.

[0058] [Symbol Explanation]

[0059] 10, 20… camera lenses

[0060] 11, 21, 31… Imaging lenses

[0061] 110, 210, 310… lenses

[0062] 314…Fixed lens carrier

[0063] 111, 211, 311… Movable lens carrier

[0064] 311a…First movable lens carrier

[0065] 311b…Second movable lens carrier

[0066] 311c…Third movable lens carrier

[0067] 1111, 2111, 3111… correspond to the installation structure

[0068] 12, 22… Light-transforming elements

[0069] 13, 23, 33… Lens drive modules

[0070] 130, 230, 330… Preload elements

[0071] 1301, 2301, 3301... Injection Molded Parts

[0072] 13011, 23011, 33011… Installation Structure

[0073] 13012, 23012, 33012… Rolling elements

[0074] 1302, 2302, 3302… Ferromagnetic components

[0075] 131, 231, 331… Drive base

[0076] 1310, 2310, 3310... base

[0077] 13101, 33101... bonding surfaces

[0078] 1311, 2311, 3311… drive coils

[0079] 1312, 2312, 3312… Circuit wiring

[0080] 1313, 3313... Flexible Circuit Boards

[0081] 33130…Photosensitive element module contact

[0082] 132…Connection Frame

[0083] 133, 233, 333… First magnet

[0084] 134, 234… Magnetic field sensing elements

[0085] 335…Second Magnet

[0086] 336… Spacing structure

[0087] 337…Carrier Installation Structure

[0088] 3371…positioning groove

[0089] 3372… Positioning Protrusion

[0090] 338…Photosensitive element mounting structure

[0091] 3381…positioning slot

[0092] 3382… Positioning Protrusion

[0093] 4… Electronic devices

[0094] 4a…camera lens

[0095] 4b, 4c, 4d, 4e, 4f, 4g… Image capturing devices

[0096] 42…Flash module

[0097] 43…Focus Assist Module

[0098] 44…Image Signal Processor

[0099] 45… Display device

[0100] 451…Shoot button

[0101] 452… Video playback button

[0102] 453…Image capture device switching button

[0103] 454…Integrated menu button

[0104] 46…Image Software Processor

[0105] 47…Circuit Board

[0106] 471…Connector

[0107] 48… Electronic components

[0108] 481…Signal Transmission Module

[0109] 482… storage units

[0110] 483… Random Access Memory

[0111] 484… Gyroscope

[0112] 485… Position locator

[0113] 49…Single-chip system

[0114] 50… Biometric sensors

[0115] 80…Photosensitive element module

[0116] 81… Component drive device

[0117] 811…Preload element

[0118] 8111…Injection Molded Parts

[0119] 81111… Installation Structure

[0120] 81112… Rolling element

[0121] 8112…Ferromagnetic components

[0122] 812…Driver Base

[0123] 8120…Base

[0124] 81201… Lamination Surface

[0125] 8121…Drive coil

[0126] 8123… Flexible Circuit Board

[0127] 813…Photosensitive element carrier

[0128] 814…Drive magnet

[0129] 82… filter

[0130] 90, 91, 92… Electronic photosensitive element

[0131] 921…Photosensitive area

[0132] 922…Non-photosensitive area

[0133] SS…receiving cavity

[0134] OA…optical axis

[0135] DP…Direction of preload

[0136] DOA…direction parallel to the optical axis

[0137] DF…driving force

[0138] PF…reaction force of preload

[0139] MF…Magnetic attraction

[0140] OBJ…the subject Detailed Implementation

[0141] 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 implement it accordingly. Based on the disclosure of this specification, the scope of the claims, and the accompanying drawings, any person skilled in the art can easily understand the related objectives and advantages of the present invention. The following embodiments further illustrate the viewpoints of the present invention in detail, but are not intended to limit the scope of the present invention in any way.

[0142] This invention provides a lens driving module for providing autofocus functionality for an imaging lens. The imaging lens includes multiple lenses and at least one movable lens carrier. The lenses are arranged along the optical axis of the imaging lens. The movable lens carrier houses at least one lens and is movable along the optical axis.

[0143] The lens driving module includes a preload element, a driving base, and at least one first magnet. The imaging lens is disposed between the preload element and the driving base, and the first magnet is disposed on the movable lens carrier.

[0144] The preload element comprises an injection-molded part and a ferromagnetic element. The injection-molded part has multiple mounting structures, each of which is provided with at least one rolling element, wherein the rolling element contacts a movable lens carrier and provides the movable lens carrier with the freedom to move along the optical axis. The ferromagnetic element is at least partially embedded in the injection-molded part, and the ferromagnetic element can generate a magnetic attraction force together with a first magnet to cause the movable lens carrier to apply a preload force to the rolling element.

[0145] A drive base and a preload element are respectively disposed on opposite sides of the movable lens carrier in the direction of the preload. The drive base includes at least one drive coil and a circuit wiring. The drive coil and a first magnet are correspondingly disposed to jointly generate a driving force to drive the movable lens carrier to move along the optical axis. The circuit wiring is electrically connected to the drive coil. Furthermore, the drive coil and a rolling element are respectively disposed on opposite sides of the movable lens carrier in the direction of the preload. Thus, the movable lens carrier can be attracted to the preload element by the first magnet and driven by the drive element on the drive base.

[0146] The lens driving module disclosed in this invention, through the above-described configuration, avoids spatial interference between the rolling element and the coil carrier, thereby extending the travel of the lens driving module in driving the movable lens carrier. Furthermore, by attaching the movable lens carrier to the housing of the lens driving module and providing it with freedom of movement along the optical axis, jitter in the non-optical axis direction during movement is reduced. In addition, by dividing the lens driving module into a preload element and a driving base, during assembly, the position of the imaging lens in the preload element can be corrected first by aligning it with the electronic photosensitive element before assembling the driving base. This reduces cumulative tolerances, especially when the imaging lens has multiple movable lens carriers, thereby improving the yield rate.

[0147] Furthermore, the preload element with ferromagnetic components can integrate multiple functions such as protecting the movable lens carrier and circuit, attracting and correcting the position of the movable lens carrier, and reducing signal interference with surrounding electronic components. Through the spatial arrangement of the coil, magnet and ferromagnetic components, interference of the movement stroke can be further reduced and space utilization can be increased, thereby reducing the size of the lens drive module.

[0148] In the lens driving module disclosed in this invention, the mounting structure can be a track extending along the optical axis to guide the rolling element to roll in the optical axis direction; or, the mounting structure can be a positioning groove with a positioning structure, which can fix the rolling element so that the rolling element can move stably within the track of the movable lens carrier.

[0149] In embodiments of an imaging lens system having multiple movable lens carriers, the lens driving module disclosed in this invention can further provide the zoom function of the imaging lens by changing the distance between the movable lens carriers.

[0150] Ferromagnetic components and injection-molded parts can be integrally molded into preload components via embedded injection molding. This embedded injection molding process improves the bonding between the ferromagnetic components and the injection-molded parts, further reduces assembly tolerances, and reduces the impact of ambient temperature on the preload component, thereby improving the control accuracy of the lens drive module. Alternatively, a portion of the injection-molded part can be softened and coated onto a portion of the ferromagnetic component via thermal riveting; however, this invention is not limited to the aforementioned manufacturing methods.

[0151] The imaging lens may further include a fixed lens carrier, which is fixed in the lens drive module. The fixed lens carrier accommodates at least one of the plurality of lenses, and the drive base and the preload element are respectively disposed on opposite sides of the fixed lens carrier in the preload direction. The lens drive module may further include a carrier mounting structure, and the fixed lens carrier is in physical contact with the carrier mounting structure. This reduces the degrees of freedom of movement of the imaging lens, thereby stabilizing image quality. The carrier mounting structure may include a positioning protrusion.

[0152] The lens driving module disclosed in this invention may further include a connecting frame, wherein the connecting frame body contacts the driving base and the preload element and together forms a receiving cavity, and the receiving cavity is used to accommodate the imaging lens. Thereby, the connecting frame can further improve the mechanical strength of the lens driving module; in addition, the connecting frame may be further provided with an alignment structure to increase the assembly precision between the preload element and the driving base.

[0153] In the lens driving module disclosed in this invention, the circuit wiring of the driving base can be formed by a circuit board, which can further be a flexible printed circuit (FPC) attached to a mating surface of the driving base body. This reduces circuit board bending, simplifies assembly, and improves yield, thereby extending the lifespan of the flexible circuit board and simplifying the assembly process. The circuit wiring can also be integrally formed by embedding metal into the driving base. Alternatively, the circuit wiring can be formed on the surface of the driving base using the Laser Direct Structuring Method (LDS method). Or, the driving base can also be a printed circuit board, but this invention is not limited to the above-described circuit wiring assembly methods.

[0154] In the lens driving module disclosed in this invention, the driving coil can be disposed on a flexible circuit board. Furthermore, the driving coil can be integrally formed in the various types of circuit wiring described above, thereby simplifying the assembly process.

[0155] The number of movable lens carriers can be at least two, and each of the at least two movable lens carriers has a specific range of movement along the optical axis. The lens drive module may further include a spacer structure disposed on the preload element or drive base, wherein the spacer structure is spaced between two adjacent movable lens carriers so that the specific ranges of movement of the two adjacent movable lens carriers do not overlap. In this way, the spacer structure can reduce collisions between adjacent movable lens carriers and avoid interference from magnetic fields generated between magnets on adjacent movable lens carriers, thereby further improving the mechanical strength of the lens drive module.

[0156] The lens driving module may further include at least one second magnet disposed on the movable lens carrier, and the first magnet is farther from the ferromagnetic member than the second magnet. In this embodiment, the ferromagnetic member and the second magnet may jointly generate a magnetic suction force to apply a preloading force to the rolling elements by the movable lens carrier. Thereby, the movable lens carrier can be adsorbed to the preloading force element through the second magnet and be driven by the driving element on the driving base through the magnetic field of the first magnet.

[0157] In the lens driving module disclosed in the present invention, the ferromagnetic member and the driving coil can share a magnet, thereby reducing parts; or, they can also correspond to different magnets to reduce the interference between magnetic fields, thereby improving the stability of the lens driving module.

[0158] The lens driving module may further include a magnetic field sensing element, which is disposed opposite to the first magnet or the second magnet, and the magnetic field sensing element is electrically connected to the circuit wiring. Among them, the magnetic field sensing element may be, for example, a Hall element, which senses the change in the magnetic field to deduce the position of the movable lens carrier of the imaging lens and can be used as a feedback signal of the control system to improve the control accuracy.

[0159] The present invention provides a camera lens, including the foregoing lens driving module, an imaging lens, and a light turning element. The light turning element is disposed on the object side or the image side of the imaging lens, and the light turning element can change the traveling direction of light, thereby adjusting the height of the camera lens.

[0160] The viewing angle of the imaging lens is FOV, which can satisfy the following condition: 5 degrees ≤ FOV ≤ 50 degrees. Among them, the imaging lens can be a telephoto lens.

[0161] The maximum focal length of the imaging lens is fmax, and the minimum focal length of the imaging lens is fmin, which can satisfy the following condition: 1.5 ≤ fmax / fmin ≤ 10. Among them, the imaging lens can change the focal length to improve the application range of the imaging lens.

[0162] The operating distance of the movable lens carrier is Sd, which can satisfy the following condition: 0.3 mm < Sd < 19.5 mm. Thereby, the imaging lens has a long operating distance to achieve the function of automatic focusing of the telephoto lens. Among them, it can also satisfy the following condition: 0.6 mm < Sd < 8.55 mm.

[0163] The present invention provides an electronic device, including the foregoing camera lens and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on the imaging surface of the imaging lens.

[0164] Each of the technical features in the above-mentioned lens driving module and camera lens of the present invention can be combined and configured to achieve the corresponding effects.

[0165] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0166] <First Embodiment>

[0167] Please refer to Figures 1 to 10 ,in Figure 1 A perspective schematic diagram of a camera lens and an electronic photosensitive element according to a first embodiment of the present invention is shown. Figure 2 Draw Figure 1 An exploded view of the imaging lens and lens drive module. Figure 3 Draw Figure 2 An exploded view of the drive base. Figure 4 Draw Figure 1 An exploded view of the other side of the imaging lens and lens drive module. Figure 5 Draw Figure 2 A partial cross-sectional schematic diagram of the preload element. Figure 6 Draw Figure 1 A cross-sectional view of the lens drive module along section line 6-6. Figure 7 Draw Figure 1 A cross-sectional view of the imaging lens and lens drive module along section line 6-6. Figure 8 Draw Figure 1 A cross-sectional view of the imaging lens and lens drive module along section line 8-8. Figure 9 Draw Figure 1 A cross-sectional schematic diagram of the imaging lens and lens drive module along section line 9-9, and Figure 10 Draw Figure 1 A side view of the imaging lens and the first magnet.

[0168] In this embodiment, the camera lens 10 includes an imaging lens 11, a light deflection element 12, and a lens driving module 13.

[0169] The imaging lens 11 includes six lenses 110 and a movable lens carrier 111. The lenses 110 are arranged along the optical axis OA of the imaging lens 11. The movable lens carrier 111 houses these lenses 110 and is movable along the optical axis OA.

[0170] The light deflection element 12 is disposed on the object side of the imaging lens 11 to change the direction of light, thereby reducing the height of the imaging lens 11.

[0171] An electronic photosensitive element 90 is disposed on the imaging surface of the imaging lens 11, and the electronic photosensitive element 90 is used to receive imaging light and convert the imaging light into electronic image signals.

[0172] The lens drive module 13 provides autofocus functionality for the imaging lens 11. The lens drive module 13 includes a preload element 130, a drive base 131, a connecting frame 132, two first magnets 133, and a magnetic field sensing element 134, wherein the imaging lens 11 is disposed between the preload element 130 and the drive base 131. Specifically, the connecting frame 132 physically contacts the drive base 131 and the preload element 130, together forming a receiving cavity SS, which accommodates the imaging lens 11. This improves the mechanical strength of the lens drive module 13 and allows the movable lens carrier 111 of the imaging lens 11 to move along the optical axis OA within the receiving cavity SS.

[0173] First magnets 133 are respectively disposed on opposite sides of the movable lens carrier 111, and magnetic field sensing element 134 is disposed opposite to one of the first magnets 133. The magnetic field sensing element 134 is used to sense the magnetic field change of the first magnet 133 to estimate the position of the movable lens carrier 111 and feed it back to a control system (not shown).

[0174] The preload element 130 includes an injection-molded part 1301 and a ferromagnetic part 1302. The injection-molded part 1301 has four mounting structures 13011 extending along the optical axis OA, and each mounting structure 13011 is provided with a rolling element 13012. In addition, the movable lens carrier 111 includes four corresponding mounting structures 1111, and these corresponding mounting structures 1111 are respectively disposed opposite to the four mounting structures 13011 of the injection-molded part 1301. The rolling element 13012 contacts the movable lens carrier 111 and can roll in the corresponding mounting structure 1111, so that the movable lens carrier 111 has a degree of freedom of movement along the optical axis OA.

[0175] The ferromagnetic component 1302 is a rectangular cover, with its four corners embedded in the injection-molded component 1301. Further, in this embodiment, the ferromagnetic component 1302 and the injection-molded component 1301 can be integrally molded into a preload element 130 by embedding in the injection molding process, or a portion of the injection-molded component 1301 can be melted by thermal riveting and then used to cover the ferromagnetic component 1302 to form the preload element 130. The ferromagnetic component 1302 and the first magnet 133 together generate a magnetic attraction force, causing the movable lens carrier 111 to apply a preload force to the rolling element 13012.

[0176] The drive base 131 includes two drive coils 1311, a circuit wiring 1312, and a flexible circuit board 1313. The drive coils 1311 are correspondingly arranged with the first magnet 133 to jointly generate a driving force to drive the movable lens carrier 111 to move along the optical axis OA. The circuit wiring 1312 is electrically connected to the drive coils 1311. Furthermore, a magnetic field sensing element 134 is disposed in the space surrounded by one of the drive coils 1311 and is electrically connected to the circuit wiring 1312. The flexible circuit board 1313 is attached to a mating surface 13101 of a body 1310 of the drive base 131, thereby reducing the number of bends required for the flexible circuit board 1313, extending its lifespan, and simplifying assembly. The circuit wiring 1312 is formed on the flexible circuit board 1313. In the accompanying drawings of this embodiment, the circuit wiring shown is only to illustrate its electrical connection function and does not represent the actual circuit structure or the actual number of circuit contacts.

[0177] The drive coil 1311 and the rolling element 13012 are respectively disposed on opposite sides of the movable lens carrier 111 in the preload direction DP, and the drive base 131 and the preload element 130 are respectively disposed on opposite sides of the movable lens carrier 111 in the preload direction DP.

[0178] like Figure 9 and Figure 10 As shown, the drive coil 1311, the rolling element 13012, and the ferromagnetic element 1302 are arranged sequentially along the direction DP of the preload force. Ignoring environmental resistance and gravity, the resultant force of the driving force DF, the reaction force PF of the preload force, and the magnetic attraction force MF of the drive coil 1311, the rolling element 13012, and the ferromagnetic element 1302 acting on the movable lens carrier 111 can drive the movable lens carrier 111 to move along the direction DOA parallel to the optical axis OA.

[0179] The field of view of the imaging lens 11 is FOV, which satisfies the following condition: FOV = 18.0 degrees.

[0180] The focal length of the imaging lens 11 is f, which satisfies the following condition: f = 26.0 mm.

[0181] The actuation distance of the movable lens carrier 111 is Sd, which satisfies the following condition: Sd = 1.06 mm.

[0182] <Second Embodiment>

[0183] Please refer to Figures 11 to 19 ,in Figure 11 A perspective schematic diagram of a camera lens and an electronic photosensitive element according to a second embodiment of the present invention is shown. Figure 12 Draw Figure 11An exploded view of the imaging lens and lens drive module. Figure 13 Draw Figure 12 A partial sectional view of the drive base. Figure 14 Draw Figure 11 An exploded view of the other side of the imaging lens and lens drive module. Figure 15 Draw Figure 12 A partial cross-sectional schematic diagram of the preload element. Figure 16 Draw Figure 11 A cross-sectional view of the lens drive module along section line 16-16. Figure 17 Draw Figure 11 A cross-sectional view of the imaging lens and lens drive module along section line 16-16. Figure 18 Draw Figure 11 A cross-sectional view of the imaging lens and lens drive module along section line 18-18, and Figure 19 Draw Figure 11 A cross-sectional view of the imaging lens and lens drive module along section line 19-19.

[0184] In this embodiment, the camera lens 20 includes an imaging lens 21, two light-deflecting elements 22, and a lens driving module 23.

[0185] The imaging lens 21 includes six lenses 210 and a movable lens carrier 211. The lenses 210 are arranged along the optical axis OA of the imaging lens 21. The movable lens carrier 211 houses these lenses 210 and is movable along the optical axis OA.

[0186] Two light-deflecting elements 22 are respectively disposed on the object side and the image side of the imaging lens 21 to change the direction of light, thereby reducing the height of the imaging lens 21 and extending the back focal length, so that the camera lens 20 has an imaging lens 21 with a long focal length.

[0187] An electronic photosensitive element 91 is disposed on the imaging surface of the imaging lens 21, and the electronic photosensitive element 91 is used to receive imaging light and convert the imaging light into electronic image signals.

[0188] The lens drive module 23 provides autofocus functionality for the imaging lens 21. The lens drive module 23 includes a preload element 230, a drive base 231, two first magnets 233, and a magnetic field sensing element 234, wherein the imaging lens 21 is disposed between the preload element 230 and the drive base 231. Specifically, the drive base 231 and the preload element 230 together form a receiving cavity SS, which is used to house the imaging lens 21. Furthermore, the movable lens carrier 211 of the imaging lens 21 can move along the optical axis OA within the receiving cavity SS.

[0189] First magnets 233 are respectively disposed on opposite sides of the movable lens carrier 211, and magnetic field sensing element 234 is disposed opposite to one of the first magnets 233. The magnetic field sensing element 234 is used to sense the magnetic field change of the first magnet 233 to estimate the position of the movable lens carrier 211 and feed it back to a control system (not shown).

[0190] The preload element 230 includes an injection-molded part 2301 and a ferromagnetic part 2302. The injection-molded part 2301 has four mounting structures 23011 extending along the optical axis OA, and each mounting structure 23011 is provided with a rolling element 23012. In addition, the movable lens carrier 211 includes four corresponding mounting structures 2111, and these corresponding mounting structures 2111 are respectively disposed opposite to the four mounting structures 23011 of the injection-molded part 2301. The rolling element 23012 contacts the movable lens carrier 211 and can roll in the corresponding mounting structure 2111, so that the movable lens carrier 211 has a degree of freedom of movement along the optical axis OA.

[0191] The ferromagnetic component 2302 is covered by the injection-molded component 2301. Further, in this embodiment, the ferromagnetic component 2302 and the injection-molded component 2301 can be integrally molded into a preload element 230 via embedded injection molding. The ferromagnetic component 2302 and the first magnet 233 together generate a magnetic attraction force, causing the movable lens carrier 211 to apply a preload force to the rolling element 23012.

[0192] The drive base 231 includes two drive coils 2311 and a circuit wiring 2312. The drive coils 2311 are correspondingly arranged with the first magnet 233 to jointly generate a driving force to drive the movable lens carrier 211 to move along the optical axis OA. The circuit wiring 2312 is electrically connected to the drive coils 2311. Furthermore, a magnetic field sensing element 234 is disposed in the space surrounded by one of the drive coils 2311 and electrically connected to the circuit wiring 2312. The circuit wiring 2312 and the base 2310 of the drive base 231 are integrally formed by metal embedding injection molding. The drive base 231 has multiple circuit contacts (not separately indicated), and the drive coils 2311 are electrically connected to the circuit contacts of the drive base 231. In the accompanying drawings of this embodiment, the circuit wiring shown is only to illustrate its electrical connection function and is not a representation of the actual circuit structure or the actual number of circuit contacts.

[0193] The drive coil 2311 and the rolling element 23012 are respectively disposed on opposite sides of the movable lens carrier 211 in the preload direction DP, and the drive base 231 and the preload element 230 are respectively disposed on opposite sides of the movable lens carrier 211 in the preload direction DP.

[0194] like Figure 19As shown, the drive coil 2311, rolling element 23012, and ferromagnetic element 2302 are arranged sequentially along the direction DP of the preload force. Ignoring environmental resistance and gravity, the combined force of the driving force, the reaction force of the preload force, and the magnetic attraction force exerted by the drive coil 2311, rolling element 23012, and ferromagnetic element 2302 on the movable lens carrier 211 can drive the movable lens carrier 211 to move along the direction DOA parallel to the optical axis OA.

[0195] The field of view of the imaging lens 21 is FOV, which satisfies the following condition: FOV = 18.0 degrees.

[0196] The focal length of the imaging lens 21 is f, which satisfies the following condition: f = 26.0 mm.

[0197] The actuation distance of the movable lens carrier 211 is Sd, which satisfies the following condition: Sd = 1.06 mm.

[0198] <Third Embodiment>

[0199] Please refer to Figures 20 to 30 ,in Figure 20 A perspective view of the imaging lens, lens driving module, and photosensitive element module according to a third embodiment of the present invention is shown. Figure 21 Draw Figure 20 A partially exploded and partially cross-sectional schematic diagram of the imaging lens, lens drive module, and photosensitive element module. Figure 22 Draw Figure 21 An exploded view of the other side of the preload element. Figure 23 Draw Figure 20 An exploded view of the imaging lens, lens drive module, and image sensor module. Figure 24 Draw Figure 23 An exploded view of the drive base. Figure 25 Draw Figure 20 A cross-sectional view of the lens drive module along section line 25-25. Figure 26 Draw Figure 20 A cross-sectional schematic diagram of the imaging lens, lens drive module, and image sensor module along section line 26-26. Figure 27 Draw Figure 20 A cross-sectional schematic diagram of the imaging lens, lens drive module, and image sensor module along section line 27-27. Figure 28 Draw Figure 20 A cross-sectional view of the imaging lens and lens drive module along section line 28-28. Figure 29 Draw Figure 20 A cross-sectional schematic diagram of the imaging lens and lens drive module along section line 29-29, and Figure 30 Draw Figure 20A partial cross-sectional schematic diagram of the imaging lens, lens drive module, and photosensitive element module.

[0200] The imaging lens 31 includes nine lenses 310, a fixed lens carrier 314, and three movable lens carriers 311. The fixed lens carrier 314 is fixed in the lens drive module 33, while the three movable lens carriers 311 are all movable along the optical axis OA. The three movable lens carriers 311 are designated as a first movable lens carrier 311a, a second movable lens carrier 311b, and a third movable lens carrier 311c.

[0201] Lenses 310 are arranged along the optical axis OA of the imaging lens 31, and the lenses 310 are divided into four lens groups, which are the first lens group, the second lens group, the third lens group and the fourth lens group from the object side to the image side. The first lens group, the second lens group, the third lens group and the fourth lens group respectively contain three lenses 310, two lenses 310, three lenses 310 and one lens 310, and the first lens group, the second lens group, the third lens group and the fourth lens group are respectively housed in the fixed lens carrier 314, the first movable lens carrier 311a, the second movable lens carrier 311b and the third movable lens carrier 311c.

[0202] The lens drive module 33 provides autofocus functionality for the imaging lens 31. The lens drive module 33 includes a preload element 330, a drive base 331, six first magnets 333, twelve second magnets 335, a spacer structure 336, and a carrier mounting structure 337, wherein the imaging lens 31 is disposed between the preload element 330 and the drive base 331. Specifically, the drive base 331 and the preload element 330 together form a receiving cavity SS, which is used to house the imaging lens 31. Furthermore, the first movable lens carrier 311a, the second movable lens carrier 311b, and the third movable lens carrier 311c of the imaging lens 31 can move along the optical axis OA within the receiving cavity SS.

[0203] The six first magnets 333 are arranged in pairs on opposite sides of the first movable lens carrier 311a, the second movable lens carrier 311b, and the third movable lens carrier 311c.

[0204] Two second magnets 335 are disposed on the image side of the fixed lens carrier 314, two second magnets 335 are disposed on the object side of the first movable lens carrier 311a, two second magnets 335 are disposed on the image side of the first movable lens carrier 311a, two second magnets 335 are disposed on the object side of the second movable lens carrier 311b, two second magnets 335 are disposed on the image side of the second movable lens carrier 311b, and two second magnets 335 are disposed on the object side of the third movable lens carrier 311c. Specifically, the second magnet 335 located on the image side of the fixed lens carrier 314 is correspondingly arranged with the second magnet 335 located on the object side of the first movable lens carrier 311a, the second magnet 335 located on the image side of the first movable lens carrier 311a is correspondingly arranged with the second magnet 335 located on the object side of the second movable lens carrier 311b, and the second magnet 335 located on the image side of the second movable lens carrier 311b is correspondingly arranged with the second magnet 335 located on the object side of the third movable lens carrier 311c.

[0205] The preload element 330 includes an injection-molded part 3301 and a ferromagnetic part 3302. The injection-molded part 3301 has four pairs of mounting structures 33011 extending along the optical axis OA, wherein the pair of mounting structures 33011 closest to the object side is each provided with three rolling elements 33012, while the remaining mounting structures 33011 are each provided with one rolling element 33012. In addition, the first movable lens carrier 311a, the second movable lens carrier 311b, and the third movable lens carrier 311c each include four corresponding mounting structures 3111. Among them, the pair of mounting structures 33011 closest to the object side corresponds to the four corresponding mounting structures 3111 of the first movable lens carrier 311a and the two corresponding mounting structures 3111 of the second movable lens carrier 311b closest to the object side, while the remaining mounting structures 33011 correspond to the two corresponding mounting structures 3111 of the second movable lens carrier 311b closest to the image side and the four corresponding mounting structures 3111 of the third movable lens carrier 311c. The rolling element 33012 contacts the first movable lens carrier 311a, the second movable lens carrier 311b, and the third movable lens carrier 311c and can roll in the corresponding mounting structures 3111, so that the first movable lens carrier 311a, the second movable lens carrier 311b, and the third movable lens carrier 311c have the degree of freedom to move along the optical axis OA.

[0206] The ferromagnetic component 3302 is covered by the injection-molded component 3301. Further, in this embodiment, the ferromagnetic component 3302 and the injection-molded component 3301 can be integrally molded into a preload element 330 via embedded injection molding. The ferromagnetic component 3302 and the second magnet 335 together generate a magnetic attraction force, causing the first movable lens carrier 311a, the second movable lens carrier 311b, and the third movable lens carrier 311c to apply a preload force to the rolling element 33012.

[0207] The drive base 331 includes six drive coils 3311, a circuit wiring 3312, and a flexible circuit board 3313. The drive coils 3311 are respectively disposed corresponding to the first magnets 333, and together generate a driving force to drive the first movable lens carrier 311a, the second movable lens carrier 311b, and the third movable lens carrier 311c to move along the optical axis OA. Specifically, the drive coils 3311 of the first magnets 333 disposed on the first movable lens carriers 311a and 311c are disposed on the flexible circuit board 3313, while the drive coils 3311 of the first magnets 333 disposed on the second movable lens carrier 311b are disposed on the side wall of a base 3310 of the drive base 331 and electrically connected to the flexible circuit board 3313 via metal wires generated by laser direct forming. This avoids interference between the first movable lens carriers 311a and 311b.

[0208] In this embodiment, the first magnet 333 is closer to the drive coil 3311 than the second magnet 335, and the first magnet 333 is farther from the ferromagnetic component 3302 than the second magnet 335. The movable lens carrier 311 is attracted to the preload element 330 by the second magnet 335 and is driven by the drive element (such as the drive coil 3311) on the drive base 331 through the magnetic field of the first magnet 333. Furthermore, the second magnets 335 of adjacent movable lens carriers 311 can further attract or repel each other.

[0209] The flexible circuit board 3313 is attached to a mating surface 33101 of the base 3310 of the drive base 331, thereby reducing the number of bends required for the flexible circuit board 3313, extending its lifespan, and simplifying assembly. Circuit wiring 3312 is formed on the flexible circuit board 3313. In the accompanying drawings of this embodiment, the circuit wiring shown is only to illustrate its electrical connection function and does not represent the actual circuit structure or the actual number of circuit contacts.

[0210] The drive coil 3311 and the rolling element 33012 are respectively disposed on opposite sides of the movable lens carrier 311 in the preload direction DP, and the drive base 331 and the preload element 330 are respectively disposed on opposite sides of the fixed lens carrier 314 and the movable lens carrier 311 in the preload direction DP.

[0211] like Figures 27 to 29 As shown, the drive coil 3311, the rolling element 33012, and the ferromagnetic element 3302 are arranged in sequence along the direction DP of the preload force. Ignoring environmental resistance and gravity, the combined force of the driving force, the reaction force of the preload force, and the magnetic attraction force of the drive coil 3311, the rolling element 33012, and the ferromagnetic element 3302 acting on the movable lens carrier 311 can drive the movable lens carrier 311 to move along the optical axis OA.

[0212] The spacer structure 336 is disposed on the preload element 330 and is spaced between the second movable lens carrier 311b and the third movable lens carrier 311c. This can prevent the second movable lens carrier 311b and the third movable lens carrier 311c from colliding and can further control the magnetic field interference of the magnets on the second movable lens carrier 311b and the third movable lens carrier 311c.

[0213] The carrier mounting structure 337 includes two positioning grooves 3371 and two positioning protrusions 3372, wherein the positioning grooves 3371 are located on the seat 3310 of the drive base 331, and the positioning protrusions 3372 are located on the preload element 330. The fixed lens carrier 314 is in physical contact with and fixed to the positioning grooves 3371 and positioning protrusions 3372 of the carrier mounting structure 337.

[0214] Please refer to Figures 31 to 35 ,in Figure 31 and Figure 32 A schematic diagram illustrating the operation of the movable lens carrier in an embodiment where the second magnet attracts each other. Figure 33 A schematic diagram illustrating another embodiment where the second magnet attracts the other magnets is drawn. Figure 34 and Figure 35 A schematic diagram illustrating the operation of the movable lens carriers in an embodiment where the second magnets disposed on the second and third movable lens carriers repel each other.

[0215] In this embodiment, the first movable lens carrier 311a, the second movable lens carrier 311b, and the third movable lens carrier 311c each have a specific range of movement along the optical axis OA. In one embodiment, when the first movable lens carrier 311a and the second movable lens carrier 311b operate simultaneously but their relative distance remains constant, the focal position of the imaging lens 31 can be changed to achieve focusing; when the relative distance between the first movable lens carrier 311a and the second movable lens carrier 311b changes, the focal length of the imaging lens 31 can be changed to achieve zooming. Referring to... Figure 32 and Figure 33 The first movable lens carrier 311a and the second movable lens carrier 311b have at least a partial overlap in their specific movement ranges along the optical axis OA. However, the second movable lens carrier 311b and the third movable lens carrier 311c do not overlap in their specific movement ranges along the optical axis OA. A spacer structure 336 is positioned between the second movable lens carrier 311b and the third movable lens carrier 311c, limiting their specific movement ranges along the optical axis OA to prevent collisions and control magnetic field interference. A pair of mounting structures 33011 located on the preload element 330 closest to the object side simultaneously accommodate four rolling elements 33012 corresponding to the first movable lens carrier 311a and two rolling elements 33012 corresponding to the second movable lens carrier 311b. The fourth lens group in the third movable lens carrier 311c is used to optimize the image. It can optimize the image for different focal lengths, focusing distances, shooting subjects and ambient temperatures, and can further improve the resolution or highlight the shooting subject.

[0216] like Figure 31 and Figure 32 As shown, in one embodiment, adjacent lens carriers 314 and 311 can attract each other through a second magnet 335.

[0217] When the camera lens including the imaging lens 31 and the lens driving module 33 of this embodiment is not in use, the first movable lens carrier 311a is attracted to the image side of the fixed lens carrier 314 by the second magnet 335, and the second movable lens carrier 311b and the third movable lens carrier 311c are attracted to each other by the second magnet 335 and are sandwiched together by the spacer structure 336. The spacer structure 336 can be used to maintain an appropriate magnetic attraction between the second and third movable lens carriers 311b and 311c, and can fix the second and third movable lens carriers 311b and 311c relative to the lens driving module 33, thereby avoiding damage caused by collision between the lens carriers.

[0218] When the camera lens is activated, the previously attracted movable lens carrier 311 is moved to a working position by the driving force generated by the drive coil 3311 and the first magnet 333. Furthermore, the first movable lens carrier 311a, the second movable lens carrier 311b, and the third movable lens carrier 311c can be driven by the lens drive module 33, wherein the first movable lens carrier 311a and the second movable lens carrier 311b have a partial overlap in their specific movement range along the optical axis OA. The imaging lens 31 achieves focusing and zoom functions through the movement of the first movable lens carrier 311a and the second movable lens carrier 311b, while the third movable lens carrier 311c can be driven to optimize image quality.

[0219] like Figure 33 As shown, in one embodiment, the first movable lens carrier 311a and the second movable lens carrier 311b can be attracted to each other and move synchronously in the optical axis OA direction, which can improve the stability when driving the movable lens carrier and thereby reduce the shaking generated when the movable lens carrier moves.

[0220] In one embodiment, a portion of the second magnet 335 may be replaced with an iron sheet or a ferromagnetic element to achieve an effect similar to the aforementioned configuration, but the present invention is not limited thereto.

[0221] like Figure 34 and Figure 35 As shown, in one embodiment, the second magnet 335 disposed on the second movable lens carrier 311b and the second magnet 335 disposed on the third movable lens carrier 311c can be mutually repulsive.

[0222] When the second movable lens carrier 311b moves to a specific position, the third movable lens carrier 311c will be moved to another specific position due to repulsive force, thereby optimizing the imaging quality under specific conditions. At this time, the drive coil 3311 and the first magnet 333 corresponding to the third movable lens carrier 311c may not be used or may not be set up at all, thereby simplifying the drive control system.

[0223] To further explain, when the second movable lens carrier 311b is driven to a specific position close to the spacer structure 336, it is originally at position A (e.g., Figure 34 The third movable lens carrier 311c (as shown) is moved to position B (e.g. Figure 35 As shown), this optimizes the imaging quality under the current conditions, while the drive coil 3311 and the first magnet 333 corresponding to the third movable lens carrier 311c may not function or may not be set up at all, thereby simplifying the drive control system.

[0224] The maximum focal length of the imaging lens 31 is fmax, and the minimum focal length of the imaging lens 31 is fmin, which satisfies the following conditions: fmax = 26.0 mm; fmin = 11.0 mm; and fmax / fmin = 2.36.

[0225] The imaging lens 31 has a field of view (FOV) that satisfies the following conditions at its maximum focal length and minimum focal length: FOV = 11.0 degrees and FOV = 25.7 degrees, respectively.

[0226] The actuation distance of the movable lens carrier 311 is Sd, which satisfies the following condition: 0.8 mm ≤ Sd < 8.0 mm. Specifically, the actuation distance Sd of the first movable lens carrier 311a, the second movable lens carrier 311b, and the third movable lens carrier 311c is greater than or equal to 0.8 mm and less than 8.0 mm.

[0227] The photosensitive element module 80 is disposed in the receiving cavity SS of the lens driving module 33. Specifically, the lens driving module 33 also includes a photosensitive element mounting structure 338, which includes two positioning grooves 3381 and two positioning protrusions 3382. The positioning grooves 3381 are located on the seat 3310 of the driving base 331, and the positioning protrusions 3382 are located on the preload element 330. The photosensitive element module 80 is in physical contact with and fixed to the positioning grooves 3381 and positioning protrusions 3382 of the photosensitive element mounting structure 338. The photosensitive element module 80 is located on the image side of the imaging lens 31 and is used to collect image optical information and convert it into electronic signals.

[0228] Further, please refer to Figures 36 to 40 ,in Figure 36 Draw Figure 20 A three-dimensional schematic diagram of the photosensitive element module. Figure 37 Draw Figure 36 A front view schematic diagram of the photosensitive element module. Figure 38 Draw Figure 36 The rear view diagram of the photosensitive element module without the driver base. Figure 39 Draw Figure 36 An exploded view of the photosensitive element module, and Figure 40 Draw Figure 36 An exploded view of the other side of the photosensitive element module.

[0229] The photosensitive element module 80 includes an electronic photosensitive element 92 and an element driving device 81.

[0230] An electronic photosensitive element 92 is disposed on the imaging surface of the imaging lens 31, and the electronic photosensitive element 92 includes a photosensitive area 921 and a non-photosensitive area 922. The photosensitive area 921 is used to receive imaging light and convert the imaging light into electronic image signals, while the non-photosensitive area 922 may be provided with multiple electronic components.

[0231] The element driving device 81 is used to drive the electronic photosensitive element 92 to move in the direction perpendicular to the optical axis OA to achieve the function of optical image stabilization. The element driving device 81 includes a preload element 811, a driving base 812 and a photosensitive element carrier 813, wherein the photosensitive element carrier 813 carries the electronic photosensitive element 92 and is housed between the preload element 811 and the driving base 812.

[0232] The preload element 811 includes an injection-molded part 8111 and two ferromagnetic parts 8112. The injection-molded part 8111 has four mounting structures 81111 facing the photosensitive element carrier 813, and each mounting structure 81111 is provided with a rolling element 81112. The rolling element 81112 contacts the photosensitive element carrier 813 and provides the photosensitive element carrier 813 with the freedom of movement in the plane perpendicular to the optical axis OA.

[0233] The ferromagnetic component 8112 is partially embedded in the injection-molded component 8111, and the ferromagnetic component 8112 generates a magnetic attraction force with the four driving magnets 814 disposed on the photosensitive element carrier 813, so that the photosensitive element carrier 813 applies a preload force to the rolling element 81112.

[0234] The driving base 812 includes four driving coils 8121, a circuit wiring (not shown), and a flexible circuit board 8123. The driving coils 8121 are disposed on the opposite side of the photosensitive element carrier 813 relative to the ferromagnetic element 8112, and are disposed opposite to the driving magnet 814. The driving coils 8121 and the driving magnet 814 are used to drive the photosensitive element carrier 813 to move along the optical axis OA. Furthermore, the circuit wiring is electrically connected to the driving coils 8121, and the flexible circuit board 8123 forms the driving coils 8121 and the circuit wiring. The flexible circuit board 8123 is attached to a mating surface 81201 of a body 8120 of the driving base 812.

[0235] Furthermore, the flexible circuit board 8123 in the photosensitive element module 80 is electrically connected to the photosensitive element module contact 33130 on the flexible circuit board 3313 of the lens drive module 33, thereby simplifying the wiring for external connections of the camera lens and improving assembly.

[0236] In addition, the photosensitive element module 80 further includes a filter 82, wherein the filter 82 is disposed between the electronic photosensitive element 92 and the imaging lens 31, and is in physical contact with the preload element 811.

[0237] <Fourth Embodiment>

[0238] Please refer to Figures 41 to 43 ,in Figure 41 A perspective schematic diagram of an electronic device according to a fourth embodiment of the present invention is shown. Figure 42 Draw Figure 41 A three-dimensional diagram of the other side of the electronic device, and Figure 43 Draw Figure 41 System block diagram of an electronic device.

[0239] In this embodiment, the electronic device 4 is a mobile device, which can be a computer, smartphone, smart wearable device, drone, or vehicle image recording and display instrument, etc., and the present invention is not limited thereto. The electronic device 4 includes, according to the second embodiment, a camera lens 20, a camera lens 4a, an image capturing device 4b, an image capturing device 4c, an image capturing device 4d, an image capturing device 4e, an image capturing device 4f, an image capturing device 4g, a flash module 42, a focus assist module 43, an image signal processor 44, a display device 45, an image software processor 46, and a biometric sensor 50. The camera lens 4a includes, according to the third embodiment, an imaging lens 31, a lens driving module 33, and a light-deflecting element (not otherwise indicated).

[0240] The camera lens 20, camera lens 4a, image capturing device 4b, image capturing device 4c, and image capturing device 4d are all disposed on the same side of the electronic device 4. The image capturing device 4e, image capturing device 4f, image capturing device 4g, and display device 45 are all disposed on the other side of the electronic device 4, and the display device 45 can be a user interface so that the image capturing device 4e and image capturing device 4f can be used as front-facing cameras to provide a selfie function, but the present invention is not limited thereto.

[0241] Image capturing devices 4b, 4c, 4d, 4e, 4f, and 4g may all include the lens driving module of the present invention and may all have a structural configuration similar to that of camera lens 20 or camera lens 4a. Specifically, each of image capturing devices 4b, 4c, 4d, 4e, 4f, and 4g may include an imaging lens, a lens driving module, and an image stabilization module. The lens driving modules of image capturing devices 4b, 4c, 4d, 4e, 4f, and 4g may, for example, be the lens driving module of the present invention.

[0242] The camera lens 20 is a super telephoto imaging device, the camera lens 4a is a zoomable telephoto imaging device, the imaging device 4b is a wide-angle imaging device, the imaging device 4c is an ultra-wide-angle imaging device, the imaging device 4d is a macro imaging device, the imaging device 4e is an ultra-wide-angle imaging device, the imaging device 4f is a wide-angle imaging device, and the imaging device 4g is a Time-of-Flight (ToF) imaging device. In this embodiment, the camera lens 20, camera lens 4a, imaging device 4b, imaging device 4c, and imaging device 4d have different viewing angles, allowing the electronic device 4 to provide different magnifications to achieve optical zoom shooting effects. For example, the ultra-wide-angle imaging device 4c or 4e has a maximum viewing angle of 105 to 125 degrees, which can achieve an image with an equivalent focal length between 11mm and 14mm. The image captured under these conditions can be referenced... Figure 44 The illustration shows an image captured by electronic device 4 with an equivalent focal length between 11mm and 14mm, in which the captured image includes the entire church, surrounding buildings and people in the square. Figure 44 Images captured using this method have a wide angle of view and depth of field, but are often accompanied by significant distortion. Wide-angle imaging devices 4b or 4f have a maximum angle of view of 70 to 90 degrees, achieving an equivalent focal length between 22mm and 30mm. Images captured under these conditions can be referenced... Figure 45 The illustration shows an image captured by electronic device 4 at an equivalent focal length between 22mm and 30mm, where the captured image includes the entire church and the people in front of it. The variable-focus telephoto imaging device 4a has a maximum viewing angle of 10 to 40 degrees, achieving an image with an equivalent focal length between 60mm and 300mm, and can be considered to provide a magnification of 5x. The image captured under these conditions can be referenced... Figure 46 The illustration shows an image captured by electronic device 4 at an equivalent focal length between 60mm and 300mm, in which the captured image includes a flock of birds flying in front of the church. Figure 46 The image captured has a small angle of view and depth of field, allowing the variable-focus telephoto imaging device 4a to be used to photograph moving targets. The lens drive module 33 drives the imaging lens 31 to quickly and continuously autofocus on the target, ensuring that the target does not become blurry even when it moves away from the focus position. During image capture, the variable-focus telephoto imaging device 4a can further optically zoom on the subject to obtain a clearer image. The magnification of the imaging device is defined as the ratio of the maximum to the minimum focal length; for example, this imaging device has a magnification of 5x. The super-telephoto imaging device 20 has a maximum angle of view of 4 to 8 degrees, achieving an image with an equivalent focal length between 400mm and 600mm. The image captured under these conditions can be referenced... Figure 47The illustration shows an image captured by electronic device 4 at an equivalent focal length between 400mm and 600mm, in which the captured image includes an angel and a cross above a church spire. Figure 47 The image has a narrower angle of view and depth of field, making the imaging lens 21 of the super telephoto imaging device 20 more prone to defocusing due to camera shake. Therefore, while providing driving force to focus the imaging lens 21 of the super telephoto imaging device 20 on the target object, the lens drive module 23 can simultaneously provide feedback force to correct camera shake, thus achieving optical image stabilization. Additionally, the imaging device 4g can acquire depth information of the image. The electronic device 4 described above includes multiple imaging devices (camera lenses) 20, 4a, 4b, 4c, 4d, 4e, 4f, and 4g as an example, but the number and configuration of imaging devices (camera lenses) are not intended to limit the invention. The equivalent focal length corresponding to the above imaging devices is a calculated estimate, and it may differ from the actual focal length due to the design of the imaging lens and the size of the electronic image sensor.

[0243] When the user photographs the subject OBJ, the electronic device 4 uses the camera lens 20, camera lens 4a, image capturing device 4b, image capturing device 4c, or image capturing device 4d to focus the light and activate the flash module 42 for supplemental lighting. It also uses the object distance information of the subject OBJ provided by the focus assist module 43 for rapid focusing. Furthermore, the image signal processor 44 performs image optimization processing to further improve the image quality produced by the imaging lens 21. The focus assist module 43 can employ an infrared or laser focus assist system to achieve rapid focusing.

[0244] In addition, the electronic device 4 can also take pictures using the image capturing devices 4e, 4f, or 4g. When the image capturing devices 4e, 4f, or 4g are taking pictures, an indicator light 4h 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 451, and can perform image shooting and image processing in conjunction with the diverse functions of the image software processor 46. The image processed by the image software processor 46 can be displayed on the display device 45. The user can also replay previously captured images using the image playback button 452 on the display device 45, select a suitable image capturing device for shooting using the image capturing device switching button 453, and adjust the shooting conditions for the current shooting scene using the integrated menu button 454.

[0245] Furthermore, the electronic device 4 also includes a circuit board 47, and the circuit board 47 carries multiple electronic components 48. Image capturing devices (camera lenses) 20, 4a, 4b, 4c, 4d, 4e, 4f, and 4g are electrically connected to the electronic components 48 via connectors 471 on the circuit board 47. Each electronic component 48 may include a signal transmitting module 481, which can transmit images to other electronic devices or for cloud storage. The signal transmitting module 481 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.

[0246] Electronic component 48 may also include memory 482, random access memory 483 for storing image signals, gyroscope 484, and position locator 485 for navigation or positioning of electronic device 4. In this embodiment, image signal processor 44, image software processor 46, and random access memory 483 are integrated into a single-chip system 49, but the invention is not limited to this configuration. In some other embodiments, electronic components may be integrated into the imaging device or disposed on one of multiple circuit boards. In addition, biometric sensor 50 can provide functions such as powering on and unlocking electronic device 4.

[0247] The lens driving module and camera lens of this invention are not limited to applications in smartphones. They can also be applied to mobile focusing systems as needed, offering both excellent aberration correction and good image quality. For example, the lens driving module and camera lens can be widely used in electronic devices such as 3D image capture, digital cameras, mobile devices, tablet 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 lens driving module and camera lens.

[0248] While the present invention has been disclosed above with reference to the foregoing embodiments, these embodiments are not intended to limit the invention. Any modifications and refinements made without departing from the spirit and scope of the invention are within the scope of patent protection of the present invention. For a description of the scope of protection defined in the appended claims, please refer to the appended claims.

Claims

1. A lens drive module for providing autofocus functionality for an imaging lens, characterized in that, The imaging lens includes a plurality of lenses and at least one movable lens carrier. The lenses are arranged along an optical axis of the imaging lens. The at least one movable lens carrier accommodates at least one of the lenses and is movable along the optical axis. The lens driving module includes a preload element, a driving base, and at least one first magnet. The imaging lens is disposed between the preload element and the driving base, and the at least one first magnet is disposed on the at least one movable lens carrier. The preload element comprises: An injection-molded part has multiple mounting structures, each mounting structure having at least one rolling element, wherein the at least one rolling element contacts the at least one movable lens carrier and provides the at least one movable lens carrier with the freedom to move along the optical axis; and A ferromagnetic component is at least partially embedded in the injection-molded component, and the ferromagnetic component and the at least one first magnet together generate a magnetic attraction force, so that the at least one movable lens carrier applies a preload force to the at least one rolling element; The drive base and the preload element are respectively disposed on opposite sides of the at least one movable lens carrier in the direction of the preload; The drive base includes: At least one driving coil, corresponding to the at least one first magnet, is configured to jointly generate a driving force to drive the at least one movable lens carrier to move along the optical axis; and A circuit wiring is electrically connected to the at least one drive coil; The at least one drive coil and the at least one rolling element are respectively disposed on opposite sides of the at least one movable lens carrier in the direction of the preload force.

2. The lens driving module according to claim 1, characterized in that, The ferromagnetic component and the injection-molded component are integrally formed into the preload element through embedded injection molding.

3. The lens driving module according to claim 1, characterized in that, The imaging lens also includes a fixed lens carrier, which is fixed in the lens driving module. The fixed lens carrier accommodates at least one of the lenses, and the driving base and the preload element are respectively disposed on opposite sides of the fixed lens carrier in the direction of the preload. The lens driving module further includes a carrier mounting structure, and the fixed lens carrier is in physical contact with the carrier mounting structure.

4. The lens driving module according to claim 1, characterized in that, It also includes a connecting frame, wherein the connecting frame body contacts the drive base and the preload element and together forms a receiving cavity, and the receiving cavity is used to receive the imaging lens.

5. The lens driving module according to claim 1, characterized in that, The drive base also includes a flexible circuit board, and the circuit wiring is formed on the flexible circuit board.

6. The lens driving module according to claim 1, characterized in that, It also includes a magnetic field sensing element, wherein the magnetic field sensing element is disposed opposite to the at least one first magnet, and the magnetic field sensing element is electrically connected to the circuit wiring.

7. The lens driving module according to claim 1, characterized in that, The number of the at least one movable lens carrier is at least two, and the at least two movable lens carriers each have a specific range of movement on the optical axis; The lens driving module further includes a spacing structure, which is disposed on the preload element or the driving base, and the spacing structure is spaced between the at least two movable lens carriers.

8. A camera lens, characterized in that, Include: The lens driving module according to claim 1; An imaging lens includes a plurality of lenses and at least one movable lens carrier, the lenses being arranged along an optical axis of the imaging lens, the at least one movable lens carrier accommodating at least one of the lenses, and the at least one movable lens carrier being movable along the optical axis; as well as A light-deflecting element is disposed on the object side or image side of the imaging lens.

9. The camera lens according to claim 8, characterized in that, The imaging lens has a field of view (FOV) and satisfies the following conditions: 5 degrees ≤ FOV ≤ 50 degrees.

10. The camera lens according to claim 8, characterized in that, The maximum focal length of the imaging lens is fmax, and the minimum focal length of the imaging lens is fmin, which satisfy the following conditions: 1.5≤fmax / fmin≤10.

11. An electronic device, characterized in that, Include: The camera lens according to claim 8; and An electronic photosensitive element is disposed on an imaging surface of the imaging lens.

12. A lens driving module for providing autofocus functionality for an imaging lens, characterized in that, The imaging lens includes a plurality of lenses and at least one movable lens carrier. The lenses are arranged along an optical axis of the imaging lens. The at least one movable lens carrier accommodates at least one of the lenses and is movable along the optical axis. The lens driving module includes a preload element, a driving base, at least one first magnet and at least one second magnet. The imaging lens is disposed between the preload element and the driving base. The at least one first magnet and the at least one second magnet are both disposed on the at least one movable lens carrier. The preload element comprises: An injection-molded part has multiple mounting structures, each mounting structure having at least one rolling element, wherein the at least one rolling element contacts the at least one movable lens carrier and provides the at least one movable lens carrier with the freedom to move along the optical axis; and A ferromagnetic element is at least partially embedded in the injection-molded part, and the ferromagnetic element and the at least one second magnet together generate a magnetic attraction force so that the at least one movable lens carrier applies a preload force to the at least one rolling element; The drive base and the preload element are respectively disposed on opposite sides of the at least one movable lens carrier in the direction of the preload; The drive base includes: At least one driving coil, corresponding to the at least one first magnet, is configured to jointly generate a driving force to drive the at least one movable lens carrier to move along the optical axis, wherein the at least one first magnet is farther away from the ferromagnetic element than the at least one second magnet; and A circuit wiring is electrically connected to the at least one drive coil; The at least one drive coil and the at least one rolling element are respectively disposed on opposite sides of the at least one movable lens carrier in the direction of the preload force.

13. The lens driving module according to claim 12, characterized in that, The ferromagnetic component and the injection-molded component are integrally formed into the preload element through embedded injection molding.

14. The lens driving module according to claim 12, characterized in that, The imaging lens further includes a fixed lens carrier, which is fixed in the lens driving module. The fixed lens carrier houses at least one of the lenses, and the driving base and the preloading force element are respectively disposed on opposite sides of the fixed lens carrier in the direction of the preloading force; Wherein, the lens driving module further includes a carrier mounting structure, and the fixed lens carrier is in physical contact with the carrier mounting structure.

15. The lens driving module according to claim 12, characterized in that, It further includes a magnetic field sensing element, wherein the magnetic field sensing element is disposed opposite to the at least one first magnet or the at least one second magnet, and the magnetic field sensing element is electrically connected to the circuit wiring.

16. The lens driving module according to claim 12, characterized in that, The number of the at least one movable lens carrier is at least two, and the at least two movable lens carriers respectively have a specific moving range on the optical axis; Wherein, the lens driving module further includes a spacer structure, the spacer structure is disposed on the preloading force element or the driving base, and the spacer structure is spaced between the at least two movable lens carriers.

17. A camera lens, characterized in that, Comprising: The lens driving module according to claim 12; An imaging lens, comprising a plurality of lenses and at least one movable lens carrier. The lenses are arranged along an optical axis of the imaging lens. The at least one movable lens carrier houses at least one of the lenses, and the at least one movable lens carrier is movable along the optical axis; And A light turning element, disposed on an object side or an image side of the imaging lens.

18. The camera lens according to claim 17, characterized in that, The viewing angle of the imaging lens is FOV, which satisfies the following conditions: 5 degrees ≤ FOV ≤ 50 degrees.

19. The camera lens according to claim 17, characterized in that, The maximum focal length of the imaging lens is fmax, and the minimum focal length of the imaging lens is fmin, which satisfies the following conditions: 1.5 ≤ fmax / fmin ≤ 10.

20. The camera lens according to claim 17, characterized in that, The actuation distance of the at least one movable lens carrier is Sd, which satisfies the following conditions: 0.3 mm < Sd < 19.5 mm.

21. The camera lens according to claim 20, characterized in that, The actuation distance of the at least one movable lens carrier is Sd, which satisfies the following conditions: 0.6 mm < Sd < 8.55 mm.

22. An electronic device, characterized in that, Comprising: The camera lens according to claim 17; and An electronic photosensitive element, disposed on an imaging surface of the imaging lens.

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