Camera module and electronic device

Abstract

A camera module and an electronic device, the camera module includes an imaging lens, an electronic photosensitive element, a first reflecting element and a first driving mechanism. The imaging lens is used to converge an imaging light on an imaging surface. The electronic photosensitive element is disposed on the imaging surface. The first reflecting element is located on an image side of the imaging lens, and the first reflecting element is used to reflect the imaging light and has a first translational degree of freedom. The first reflecting element is mounted on the first driving mechanism, and the first driving mechanism is used to drive the first reflecting element to move along the direction of the first translational degree of freedom. When the first reflecting element approaches the imaging lens, the electronic photosensitive element is approached at the same time. When the first reflecting element moves away from the imaging lens, the electronic photosensitive element moves away at the same time. In this way, the focusing range of the long-focus lens can be expanded.

Description

[0001] This application is a divisional application of the patent application filed on April 20, 2020, with application number 202010309251.3 and title "Camera Module and Electronic Device". Technical Field

[0002] This disclosure relates to a camera module, and more particularly to a camera module used in portable electronic devices. Background Technology

[0003] In recent years, portable electronic devices have developed rapidly, such as smart devices and tablets, which have become ubiquitous in modern life. Camera modules mounted on these devices have also flourished. However, as technology advances, users' demands for camera module quality are increasing. Therefore, developing a camera module that can shorten the focusing distance has become an important and urgent problem for the industry. Summary of the Invention

[0004] This disclosure provides a camera module and electronic device that achieves the effect of shortening the focusing distance by setting a first driving mechanism and a first reflective element.

[0005] According to one embodiment of this disclosure, a camera module is provided, comprising an imaging lens, an electronic photosensitive element, a first reflective element, and a first driving mechanism. The imaging lens is used to converge an imaging beam onto an imaging surface. The electronic photosensitive element is disposed on the imaging surface. The first reflective element is located on the image side of the imaging lens and is used to deflect the imaging beam, having a first translational degree of freedom. The first reflective element is mounted on the first driving mechanism, and the first driving mechanism is used to drive the first reflective element to move along the direction of the first translational degree of freedom. The first driving mechanism includes a support member, a moving member, at least two magnets, and at least two magnetic elements. The magnets are disposed on the moving member. The magnetic elements are disposed on the support member and correspond to the magnets. When the first reflective element approaches the imaging lens, it simultaneously approaches the electronic photosensitive element. When the first reflective element moves away from the imaging lens, it simultaneously moves away from the electronic photosensitive element. A magnetic force exists between the magnets and the magnetic elements. The first reflective element includes at least two reflective surfaces.

[0006] According to the camera module of the embodiment described above, the first reflective element is mounted on the movable member, and the support member and the movable member are movable relative to each other.

[0007] According to the camera module of the embodiment described above, a groove may be included between the support member and the moving member, the groove extends in the direction of the first translational degree of freedom, and a rolling element is provided in the groove.

[0008] According to the camera module of the embodiment described above, the first driving mechanism may include a coil, and the coil and the magnet generate a driving force in the direction of the first translational degree of freedom.

[0009] According to the camera module of the embodiment described above, the first reflective element may have a second translational degree of freedom, and the second translational degree of freedom is orthogonal to the first translational degree of freedom.

[0010] According to the camera module of the embodiment described above, the reflective surface can be moved in the same direction by a first drive mechanism.

[0011] According to the camera module of the embodiment described above, the first reflective element may include an incident surface and an exit surface, at least one of the incident surface and the exit surface having an aspherical surface.

[0012] According to the camera module of the embodiment described above, the refractive index of the first reflecting element for d-ray is N, which satisfies the following condition: 1.66 ≤ N < 2.5. Additionally, it satisfies the following condition: 1.70 ≤ N < 2.5.

[0013] According to one embodiment of the present disclosure, an electronic device is provided, which includes the camera module of the aforementioned embodiment. Attached Figure Description

[0014] Figure 1A A schematic diagram of an electronic device according to a first embodiment of the present invention is shown;

[0015] Figure 1B Draw Figure 1A A schematic diagram of the camera module in the first embodiment;

[0016] Figure 1C Draw Figure 1A A partial schematic diagram of the camera module in the first embodiment;

[0017] Figure 1D Draw Figure 1A An exploded view of the first reflective element, the first driving mechanism, and the second driving mechanism in the first embodiment;

[0018] Figure 1E Draw Figure 1A A top view of the camera module in the first embodiment;

[0019] Figure 1F Draw Figure 1A A schematic diagram of the rotational degrees of freedom of the third reflecting element in the first embodiment;

[0020] Figure 1G Draw Figure 1A A schematic diagram of the parameters of the first reflective element in the first embodiment;

[0021] Figure 2A A schematic diagram of an electronic device according to a second embodiment of the present invention is shown;

[0022] Figure 2B Draw Figure 2A A schematic diagram of the camera module in the second embodiment;

[0023] Figure 2C Draw Figure 2A A partial schematic diagram of the camera module in the second embodiment;

[0024] Figure 2D Draw Figure 2A An exploded view of the first reflective element, the first driving mechanism, and the second driving mechanism in the second embodiment;

[0025] Figure 2E Draw Figure 2A Top view of the camera module in the second embodiment;

[0026] Figure 2F Draw Figure 2A A schematic diagram of the rotational degrees of freedom of the second reflecting element in the second embodiment;

[0027] Figure 2G Draw Figure 2A A schematic diagram of the parameters of the first reflective element in the second embodiment;

[0028] Figure 3A A schematic diagram of an electronic device according to a third embodiment of the present invention is shown;

[0029] Figure 3B Draw Figure 3A A schematic diagram of the camera module in the third embodiment;

[0030] Figure 3C Draw Figure 3A A partial schematic diagram of the camera module in the third embodiment;

[0031] Figure 3D Draw Figure 3A An exploded view of the first reflective element and the first driving mechanism in the third embodiment;

[0032] Figure 3E Draw Figure 3A A top view of the camera module in the third embodiment;

[0033] Figure 3F Draw Figure 3A A schematic diagram of the rotational degrees of freedom of the second reflecting element in the third embodiment;

[0034] Figure 3G Draw Figure 3A A schematic diagram of the parameters of the first reflective element in the third embodiment;

[0035] Figure 4A A schematic diagram of an electronic device according to a fourth embodiment of the present invention is shown;

[0036] Figure 4B Draw Figure 4A Another schematic diagram of the electronic device in the fourth embodiment;

[0037] Figure 4C Drawing according to Figure 4A Block diagram of the electronic device in the fourth embodiment;

[0038] Figure 4D Drawing according to Figure 4A A schematic diagram of an image captured by the ultra-wide-angle camera module in the fourth embodiment;

[0039] Figure 4E Drawing according to Figure 4A A schematic diagram of an image captured by a high-resolution camera module in the fourth embodiment; and

[0040] Figure 4F Drawing according to Figure 4A A schematic diagram of an image captured by the telephoto camera module in the fourth embodiment.

[0041] [Symbol Explanation]

[0042] 10, 20, 30, 40: Electronic devices

[0043] 100, 200, 300, 41: Camera modules

[0044] 110, 210, 310: Imaging lens

[0045] 120, 220, 320: Electronic photosensitive element

[0046] 130, 230, 330: First reflective element

[0047] 131,231,331: Reflecting surface

[0048] 140, 240, 340: First drive mechanism

[0049] 141,241,341: Support components

[0050] 141a, 141b, 241a, 241b, 341a: Grooves

[0051] 142,242,342: Moving parts

[0052] 143,243,343: First magnet

[0053] 144, 244, 344: First magnetic component

[0054] 145, 245, 345: First coil

[0055] 146, 246, 346: First rolling element

[0056] 147,247: Base

[0057] 150, 250, 350: Second reflective element

[0058] 160: Third reflective element

[0059] 170, 270: Second drive mechanism

[0060] 171,271: Second magnet

[0061] 172,272: Second magnetic component

[0062] 173,273: Second coil

[0063] 174,274: Second rolling element

[0064] 180: Third drive mechanism

[0065] 41a: Ultra-wide-angle camera module

[0066] 41b: High-resolution camera module

[0067] 41c: Telephoto camera module

[0068] 42: User Interface

[0069] 43: Imaging signal processing element

[0070] 44: Optical anti-shake component

[0071] 45: Sensing element

[0072] 46: Flash module

[0073] 47: Focusing Assist Module

[0074] A: Incident surface

[0075] B: Exit surface

[0076] X: Axis of symmetry

[0077] F1: First translational degree of freedom

[0078] F2: Second translational degree of freedom

[0079] R: Rotational degree of freedom

[0080] W: Width of the camera module

[0081] L: Length of the camera module

[0082] H: Thickness of the first reflective element

[0083] N: Refractive index of the first reflecting element for d-rays

[0084] θ: included angle Detailed Implementation

[0085] This disclosure provides a camera module comprising an imaging lens, an electronic photosensitive element, a first reflective element, and a first driving mechanism. The imaging lens is used to converge imaging light onto an imaging surface. The electronic photosensitive element is disposed on the imaging surface. The first reflective element is located on the image side of the imaging lens and is used to deflect the imaging light. The first reflective element is mounted on the first driving mechanism. This provides a camera module with a driveable first reflective element, and its configuration can shorten the operating distance of the first driving mechanism, allowing for more sensitive image control.

[0086] The first reflective element may have two translational degrees of freedom, which are substantially orthogonal to each other. These translational degrees of freedom can be a first translational degree of freedom and a second translational degree of freedom, meaning the second translational degree of freedom is substantially orthogonal to the first translational degree of freedom. Specifically, the first reflective element having a first translational degree of freedom indicates that it can move along a specific direction on a specific plane. This provides the first reflective element with the ability to move in a two-dimensional plane and allows for more flexible control of the imaging rays.

[0087] The first driving mechanism can be used to drive the first reflective element to move along the direction of the first translational degree of freedom. The first driving mechanism has the functions of autofocus and optical image stabilization, and the driving displacement of the first reflective element along the direction of the first translational degree of freedom is less than the change in the back focal length of the camera module. Furthermore, the first driving mechanism can be at least one of an autofocus driving mechanism and an optical image stabilization driving mechanism, and the imaging lens can be a long back focal length telephoto lens. By using the first reflective element to reduce the overall space, more efficient space utilization can be achieved, and the feasibility of miniaturizing the camera module can be provided.

[0088] When the first reflective element approaches the imaging lens, it simultaneously approaches the electronic image sensor. When the first reflective element moves away from the imaging lens, it simultaneously moves away from the electronic image sensor. This solves the problem of long-distance drive being difficult due to the large focal length variation of telephoto lenses, thus expanding the focusing range of telephoto lenses.

[0089] The first drive mechanism may include a support member, a movable member, at least one magnet, and at least one magnetic element. More specifically, the first drive mechanism may include at least two magnets and at least two magnetic elements, but is not limited thereto. A first reflective element is mounted on the movable member, and the movable member and the support member are movable relative to each other. The magnet is disposed on the movable member. The magnetic element is disposed on the support member and corresponds to the magnet. A magnetic force is generated between the magnet and the magnetic element; specifically, the magnetic force between the magnet and the magnetic element is an attractive force. This provides a preload force between the movable member and the support member, which helps to improve the structural stability of the first drive mechanism.

[0090] The first reflective element may include at least two reflective surfaces, and the reflective surfaces move in the same direction via a first driving mechanism. This secondary reflection structure can significantly reduce the size of the camera module.

[0091] The number of magnetic components and magnets can both be at least two. The reflective surface, magnetic components, and magnets are all symmetrically arranged, and each of the reflective surface, magnets, and magnetic components is symmetrically arranged along an axis of symmetry. This simplifies the assembly of the camera module, avoids misalignment during camera module assembly and manufacturing, and improves the overall manufacturing yield of the camera module.

[0092] A groove may be included between the support member and the moving member, extending along the direction of the first translational degree of freedom, and a rolling element is disposed in the groove. This improves the skewing that may occur in the first drive mechanism and increases the linear stability of the movement.

[0093] The first driving mechanism may include a coil, and the coil and the magnet generate a driving force in the direction of the first translational degree of freedom. This enables the camera module to autofocus.

[0094] The camera module may further include a second drive mechanism for driving the first reflective element to move along the direction of the second translational degree of freedom. This achieves optical image stabilization.

[0095] The camera module may further include a second reflective element and a third drive mechanism, wherein the second reflective element has a rotational degree of freedom, and the third drive mechanism is used to drive the second reflective element to rotate in the direction of the rotational degree of freedom. This achieves optical image stabilization of the camera module in another dimension.

[0096] The first reflecting element may include an incident surface and an exit surface, at least one of which has an aspherical surface. In this way, the first reflecting element can possess light refractive power, which can be used to correct optical aberrations.

[0097] The imaging lens and the electronic photosensitive element can have a fixed relative position, and the first reflective element can move relative to the imaging lens and the electronic photosensitive element. This reduces the complexity of the assembly process and improves assembly efficiency.

[0098] The camera module may also include a third reflecting element, which has a rotational degree of freedom, and a third drive mechanism is used to drive the third reflecting element to rotate in the direction of the rotational degree of freedom. In this way, the camera module achieves optical image stabilization in another dimension.

[0099] The refractive index of the first reflecting element for d-ray is N, which satisfies the following condition: 1.66 ≤ N < 2.5. Furthermore, the first reflecting element can be made of plastic or glass. This increases the range of reflection angles and helps reduce the size of the first reflecting element. Additionally, it satisfies the following condition: 1.70 ≤ N < 2.5.

[0100] The thickness of the first reflective element is H, which satisfies the following condition: 3.00 mm ≤ H ≤ 10.00 mm. This range represents the thickness range within which the first reflective element can stably project the image light within a limited space. This allows a miniaturized camera module to maintain good optical quality.

[0101] The camera module has a length of L and a width of W, satisfying the condition: 0.7 < L / W < 3.5. Furthermore, the length of the camera module is calculated based on the optical axis of the imaging lens, while the width is calculated based on the direction perpendicular to the optical axis. This effectively reduces the proportion range of elongated telephoto camera modules. Additionally, it satisfies the condition: 0.8 < L / W < 2.5. This further reduces the overall volume proportion range of the telephoto camera module.

[0102] The various technical features in the camera module disclosed above can be combined and configured to achieve the corresponding effects.

[0103] This disclosure provides an electronic device that includes the aforementioned camera module.

[0104] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0105] <First Embodiment>

[0106] Figure 1A A schematic diagram of the electronic device 10 according to the first embodiment of the present invention is shown. Figure 1B Draw Figure 1AA schematic diagram of the camera module 100 in the first embodiment. The electronic device 10 includes the camera module 100, and the camera module 100 includes an imaging lens 110, an electronic photosensitive element 120, a first reflective element 130, and a first driving mechanism 140 (e.g., ...). Figure 1D (Identification), a second drive mechanism 170 (such as) Figure 1D (Identification), a second reflective element 150, and a third drive mechanism 180 (e.g., Figure 1F The first driving mechanism 140 can be at least one of an autofocus driving mechanism and an optical image stabilization driving mechanism, and the imaging lens 110 can be a long back telephoto lens, but is not limited thereto.

[0107] An imaging lens 110 is used to converge an imaging ray onto an imaging surface (not shown), and an electronic photosensitive element 120 is disposed on the imaging surface. A first reflective element 130 is located on the image side of the imaging lens 110 and is mounted on the first drive mechanism 140, and is used to deflect the imaging ray. Specifically, the imaging ray enters the camera module 100 through an incident surface (not shown) of the second reflective element 150, and is then focused onto the imaging surface by the imaging lens 110. The first drive mechanism 140 has an autofocus function, while the second drive mechanism 170 and the third drive mechanism 180 have optical image stabilization functions.

[0108] Depend on Figure 1B It is understood that the imaging lens 110 and the electronic photosensitive element 120 have a fixed relative position, and the first reflective element 130 is movable relative to the imaging lens 110 and the electronic photosensitive element 120. This reduces the complexity of the assembly process and improves assembly efficiency.

[0109] Furthermore, when the first reflective element 130 approaches the imaging lens 110, it also approaches the electronic photosensitive element 120; when the first reflective element 130 moves away from the imaging lens 110, it also moves away from the electronic photosensitive element 120. Specifically, this disclosure provides a camera module 100 that can drive the first reflective element 130, and its configuration can shorten the operating distance of the first drive mechanism 140, the second drive mechanism 170, and the third drive mechanism 180, enabling more sensitive image control.

[0110] The use of the first reflective element 130 allows for a reduction in overall space, resulting in more efficient space utilization and providing the feasibility of miniaturizing the camera module 100. This solves the problem of long-distance drive being difficult due to the large focal length variation of telephoto lenses, thereby expanding the focusing range of telephoto lenses.

[0111] Figure 1C Draw Figure 1A A partial schematic diagram of the camera module 100 in the first embodiment. (From...) Figure 1C It can be seen that the first reflecting element 130 includes an incident surface A, an exit surface B, and at least two reflecting surfaces 131 (e.g., ...). Figure 1E (Illustrated), where the imaging ray can be deflected from the incident surface A to the exit surface B, and the reflecting surface 131 moves in the same direction through the first driving mechanism 140. This secondary reflection structure can significantly reduce the size of the camera module 100. Specifically, the first reflecting element 130 can be made of plastic or glass; in the first embodiment, the first reflecting element 130 is made of plastic, but this is not a limitation. This provides greater design flexibility from an optical design perspective, facilitates the development of high-refractive-index plastic materials, and helps lower the barrier to developing optical elements with dual reflective surfaces.

[0112] The first drive mechanism 140 may include a support member 141, a moving member 142, at least one magnet, at least one magnetic element, a coil, a plurality of rolling elements, and a base 147. Figure 1D Draw Figure 1A An exploded view of the first reflective element 130, the first driving mechanism 140, and the second driving mechanism 170 in the first embodiment. Figure 1D As can be seen, in the first embodiment, the first driving mechanism 140 includes a support member 141, a moving member 142, a first magnet 143, a first magnetic member 144, a first coil 145, a first rolling element 146 and a base 147, and the second driving mechanism 170 includes a second magnet 171, a second magnetic member 172, a second coil 173 and a second rolling element 174.

[0113] In the first embodiment, there are two first magnets 143, two first magnetic elements 144, two first coils 145, four first rolling elements 146, two second magnets 171, two second magnetic elements 172, two second coils 173, and four second rolling elements 174, but this is not a limitation.

[0114] In detail, the first reflective element 130 is mounted on the movable member 142, and the movable member 142 is movable relative to the support member 141. A magnet is disposed on the movable member 142. A magnetic element is disposed on the support member 141 and corresponds to the magnet, and a magnetic force is generated between the magnet and the magnetic element. Specifically, in the first embodiment, the first magnet 143 and the second magnet 171 are respectively disposed on the movable member 142 and the support member 141, and the first magnetic element 144 and the second magnetic element 172 are respectively disposed on the support member 141 and the base 147. The first magnet 143 and the first magnetic element 144 correspond to each other, and the second magnet 171 and the second magnetic element 172 correspond to each other. A magnetic force is generated between the first magnet 143 and the first magnetic element 144, and a magnetic force is generated between the second magnet 171 and the second magnetic element 172. The magnetic force between the first magnet 143 and the first magnetic element 144 and the magnetic force between the second magnet 171 and the second magnetic element 172 are both mutually attractive forces. This provides a preload force between the moving part 142 and the support part 141, which helps to improve the structural stability of the first drive mechanism 140 and the second drive mechanism 170.

[0115] Figure 1E Draw Figure 1A A top view of the camera module 100 in the first embodiment. Figure 1D and Figure 1E It is understood that the first drive mechanism 140 and the second drive mechanism 170 are used to drive the first reflective element 130 to move along two translational degrees of freedom, and the two translational degrees of freedom are a first translational degree of freedom F1 and a second translational degree of freedom F2, respectively. This achieves the effect of optical image stabilization of the camera module 100. Specifically, the degrees of freedom may include surge, sway, heave, pitch, yaw, and roll, where surge, sway, and heave are translational degrees of freedom, while pitch, yaw, and roll are rotational degrees of freedom.

[0116] In detail, the first reflective element 130 has a first translational degree of freedom F1, and the first driving mechanism 140 is used to drive the first reflective element 130 to move along the direction of the first translational degree of freedom F1. In other words, the first reflective element 130 having a first translational degree of freedom F1 means that it can move in a specific direction on a specific plane, and the amount of driving displacement of the first reflective element 130 along the direction of the first translational degree of freedom F1 is less than the change in the back focus of the camera module 100. Further, the support member 141 and the moving member 142 provide the first translational degree of freedom F1, and the coil and the magnet generate a driving force in the direction of the first translational degree of freedom F1. Specifically, in the first embodiment, the first coil 145 and the first magnet 143 generate a driving force in the direction of the first translational degree of freedom F1. This enables the camera module 100 to achieve autofocus.

[0117] The first reflective element 130 has a second translational degree of freedom F2, which is substantially orthogonal to the first translational degree of freedom F1. This provides the first reflective element 130 with the ability to move in a two-dimensional plane and allows for more flexible control of the imaging light. Furthermore, the support member 141 and the base 147 provide the second translational degree of freedom F2, and the second drive mechanism 170 drives the first reflective element 130 to move along the direction of the second translational degree of freedom F2. This achieves optical image stabilization.

[0118] Depend on Figure 1D and Figure 1E It is understood that a groove is included between the support member 141 and the movable member 142. Specifically, in the first embodiment, a groove 141a is included between the support member 141 and the movable member 142, and a groove 141b is included between the support member 141 and the base 147. In the first embodiment, the number of grooves 141a is four, and the number of grooves 141b is four, but it is not limited to this.

[0119] Furthermore, groove 141a extends along the direction of the first translational degree of freedom F1, and groove 141b extends along the direction of the second translational degree of freedom F2, and each groove 141a and each groove 141b is provided with a rolling element. In the first embodiment, each groove 141a is provided with a first rolling element 146, and each groove 141b is provided with a second rolling element 174. This improves the skewness that may occur between the first drive mechanism 140 and the second drive mechanism 170, and increases the linear stability of the movement.

[0120] Depend on Figure 1EIt can be seen that the reflective surface 131, the magnet, and the magnetic component are all symmetrically arranged along a symmetry axis X. Specifically, in the first embodiment, the reflective surface 131, the first magnet 143, the first magnetic component 144, the second magnet 171, and the second magnetic component 172 are all symmetrically arranged along the symmetry axis X. This simplifies the assembly of the camera module 100 and avoids misalignment during assembly and manufacturing, thereby improving the overall manufacturing yield of the camera module 100.

[0121] Figure 1F Draw Figure 1A A schematic diagram of the rotational degree of freedom R of the third reflecting element 160 in the first embodiment. (From...) Figure 1F It is understood that the third reflective element 160 has a rotational degree of freedom R, and the third drive mechanism 180 is used to drive the third reflective element 160 to rotate in the direction of the rotational degree of freedom R. Specifically, the third drive mechanism 180 is used to drive the third reflective element 160 to rotate along an axis perpendicular to the incident light path and the exit light path. In this way, optical image stabilization is provided to the camera module 100 in another dimension.

[0122] Figure 1G Draw Figure 1A A schematic diagram of the parameters of the first reflective element 130 in the first embodiment is shown. Please refer to... Figure 1A and Figure 1G In the first embodiment, the refractive index of the first reflective element 130 for d-light is N, the wavelength of d-light is 587.6 nanometers, the thickness of the first reflective element 130 is H, the length of the camera module 100 is L, and the width of the camera module 100 is W. The parameters satisfy the conditions in Table 1 below.

[0123]

[0124] <Second Embodiment>

[0125] Figure 2A A schematic diagram of the electronic device 20 according to a second embodiment of the present invention is shown. Figure 2B Draw Figure 2A A schematic diagram of the camera module 200 in the second embodiment. The electronic device 20 includes the camera module 200, and the camera module 200 includes an imaging lens 210, an electronic photosensitive element 220, a first reflective element 230, and a first driving mechanism 240 (e.g., ...). Figure 2D (Identification), a second drive mechanism 270 (such as) Figure 2DThe first driving mechanism 240 can be at least one of an autofocus driving mechanism and an optical image stabilization driving mechanism, and the imaging lens 210 can be a long back telephoto lens, but is not limited thereto.

[0126] Imaging lens 210 is used to converge an imaging ray onto an imaging surface (not shown), and electronic photosensitive element 220 is disposed on the imaging surface. First reflective element 230 is located on the image side of imaging lens 210 and mounted on first drive mechanism 240, and is used to deflect the imaging ray. Specifically, the imaging ray enters camera module 200 through an incident surface (not shown) of second reflective element 250, and is then focused onto the imaging surface by imaging lens 210. First drive mechanism 240 has an autofocus function, while second drive mechanism 270 and third drive mechanism have optical image stabilization functions.

[0127] Depend on Figure 2B It is understood that the imaging lens 210 and the electronic photosensitive element 220 have fixed relative positions, and the first reflective element 230 moves relative to the imaging lens 210 and the electronic photosensitive element 220. This reduces the complexity of the assembly process and improves assembly efficiency.

[0128] Furthermore, when the first reflective element 230 approaches the imaging lens 210, it also approaches the electronic photosensitive element 220; when the first reflective element 230 moves away from the imaging lens 210, it also moves away from the electronic photosensitive element 220. Specifically, this disclosure provides a camera module 200 that can drive the first reflective element 230, and its configuration can shorten the operating distance of the first drive mechanism 240, the second drive mechanism 270, and the third drive mechanism, enabling more sensitive image control.

[0129] By reducing the overall space through the first reflective element 230, more efficient space utilization can be achieved, and the feasibility of miniaturizing the camera module 200 can be provided. In this way, the problem of long-distance drive is difficult to achieve due to the large focal length variation of telephoto lenses can be solved, thereby expanding the focusing range of telephoto lenses.

[0130] Figure 2C Draw Figure 2A A partial schematic diagram of the camera module 200 in the second embodiment. (From...) Figure 2C It can be seen that the first reflecting element 230 includes an incident surface A, an exit surface B, and at least two reflecting surfaces 231 (e.g., Figure 2E(Illustrated), wherein the imaging light can be deflected from the incident surface A to the exit surface B, and the reflecting surface 231 moves in the same direction through the first driving mechanism 240. In this way, the secondary reflection structure can significantly reduce the size of the camera module 200. Specifically, the first reflecting element 230 can be made of plastic or glass; in the second embodiment, the first reflecting element 230 is made of glass, but this is not a limitation.

[0131] The first drive mechanism 240 may include a support member 241, a moving member 242, at least one magnet, at least one magnetic member, a coil, a plurality of rolling elements, and a base 247. Figure 2D Draw Figure 2A An exploded view of the first reflective element 230, the first driving mechanism 240, and the second driving mechanism 270 in the second embodiment. Figure 2D As can be seen, in the second embodiment, the first driving mechanism 240 includes a support member 241, a moving member 242, a first magnet 243, a first magnetic member 244, a first coil 245, a first rolling element 246 and a base 247, and the second driving mechanism 270 includes a second magnet 271, a second magnetic member 272, a second coil 273 and a second rolling element 274.

[0132] In the second embodiment, the number of first magnets 243 is two, the number of first magnetic elements 244 is two, the number of first coils 245 is two, the number of first rolling elements 246 is four, the number of second magnets 271 is two, the number of second magnetic elements 272 is two, the number of second coils 273 is two, and the number of second rolling elements 274 is four, but it is not limited to these.

[0133] In detail, the first reflective element 230 is mounted on the movable member 242, and the movable member 242 is movable relative to the support member 241. A magnet is disposed on the movable member 242. A magnetic element is disposed on the support member 241 and corresponds to the magnet, and a magnetic force is generated between the magnet and the magnetic element. Specifically, in the second embodiment, the first magnet 243 and the second magnet 271 are respectively disposed on the support member 241 and the movable member 242, and the first magnetic element 244 and the second magnetic element 272 are respectively disposed on the base 247 and the support member 241. The first magnet 243 and the first magnetic element 244 correspond to each other, and the second magnet 271 and the second magnetic element 272 correspond to each other. A magnetic force is generated between the first magnet 243 and the first magnetic element 244, and a magnetic force is generated between the second magnet 271 and the second magnetic element 272. The magnetic forces between the first magnet 243 and the first magnetic element 244 and between the second magnet 271 and the second magnetic element 272 are both mutually attractive forces. This provides a preload between the moving part 242 and the support part 241, which helps to improve the structural stability of the first drive mechanism 240 and the second drive mechanism 270.

[0134] Figure 2E Draw Figure 2A A top view of the camera module 200 in the second embodiment. Figure 2D and Figure 2E It is understood that the first drive mechanism 240 and the second drive mechanism 270 are used to drive the first reflective element 230 to move along two translational degrees of freedom, and the two translational degrees of freedom are a first translational degree of freedom F1 and a second translational degree of freedom F2, respectively. This achieves the effect of optical image stabilization of the camera module 200. Specifically, the degrees of freedom may include surge, sway, heave, pitch, yaw, and roll, where surge, sway, and heave are translational degrees of freedom, while pitch, yaw, and roll are rotational degrees of freedom.

[0135] In detail, the first reflective element 230 has a first translational degree of freedom F1, and the first driving mechanism 240 is used to drive the first reflective element 230 to move along the direction of the first translational degree of freedom F1. In other words, the first reflective element 230 having a first translational degree of freedom F1 means that it can move in a specific direction on a specific plane, and the amount of driving displacement of the first reflective element 230 along the direction of the first translational degree of freedom F1 is less than the change in the back focus of the camera module 200. Furthermore, the support member 241 and the base 247 provide the first translational degree of freedom F1, and the coil and the magnet generate a driving force in the direction of the first translational degree of freedom F1. Specifically, in the second embodiment, the first coil 245 and the first magnet 243 generate a driving force in the direction of the first translational degree of freedom F1. This enables the camera module 200 to achieve autofocus.

[0136] The first reflective element 230 has a second translational degree of freedom F2, which is substantially orthogonal to the first translational degree of freedom F1. This provides the first reflective element 230 with the ability to move in a two-dimensional plane and allows for more flexible control of the imaging light. Furthermore, the support member 241 and the moving member 242 provide the second translational degree of freedom F2, and the second drive mechanism 270 drives the first reflective element 230 to move along the direction of the second translational degree of freedom F2. This achieves optical image stabilization.

[0137] Depend on Figure 2D and Figure 2E It is known that a groove is included between the support member 241 and the movable member 242. Specifically, in the second embodiment, a groove 241a is included between the support member 241 and the movable member 242, and a groove 241b is included between the support member 241 and the base 247. In the second embodiment, the number of grooves 241a is four, and the number of grooves 241b is four, but it is not limited to this.

[0138] Furthermore, groove 241b extends along the direction of the first translational degree of freedom F1, and groove 241a extends along the direction of the second translational degree of freedom F2, and each groove 241a and each groove 241b is provided with a rolling element. In the second embodiment, each groove 241b is provided with a first rolling element 246, and each groove 241a is provided with a second rolling element 274. This improves the skewness that may occur between the first drive mechanism 240 and the second drive mechanism 270, and increases the linear stability of the movement.

[0139] Depend on Figure 2E It can be seen that the reflective surface 231, the magnet, and the magnetic component are all symmetrically arranged along a symmetry axis X. Specifically, in the second embodiment, the reflective surface 231, the first magnet 243, the first magnetic component 244, the second magnet 271, and the second magnetic component 272 are all symmetrically arranged along the symmetry axis X. This simplifies the assembly of the camera module 200 and avoids misalignment during assembly and manufacturing, thereby improving the overall manufacturing yield of the camera module 200.

[0140] Furthermore, the incident surface A and the axis of symmetry X, and the exit surface B and the axis of symmetry X, each have an angle θ, which is 45 degrees, but this is not a limitation.

[0141] Figure 2F Draw Figure 2A A schematic diagram of the rotational degree of freedom R of the second reflecting element 250 in the second embodiment. (From...) Figure 2F It is known that the second reflective element 250 has a rotational degree of freedom R, and the third drive mechanism is used to drive the second reflective element 250 to rotate in the direction of the rotational degree of freedom R. Specifically, the third drive mechanism is used to drive the second reflective element 250 to rotate along an axis perpendicular to the incident light path and the exit light path. In this way, optical image stabilization is provided to the camera module 200 in another dimension.

[0142] Figure 2G Draw Figure 2A A schematic diagram of the parameters of the first reflective element 230 in the second embodiment is provided. Please refer to... Figure 2A and Figure 2G In the second embodiment, the refractive index of the first reflective element 230 for d-light is N, the wavelength of d-light is 587.6 nanometers, the thickness of the first reflective element 230 is H, the length of the camera module 200 is L, and the width of the camera module 200 is W. The parameters satisfy the conditions in Table 2 below.

[0143]

[0144] <Third Embodiment>

[0145] Figure 3AA schematic diagram of an electronic device 30 according to a third embodiment of the present invention is shown. Figure 3B Draw Figure 3A A schematic diagram of the camera module 300 in the third embodiment. The electronic device 30 includes the camera module 300, which includes an imaging lens 310, an electronic photosensitive element 320, a first reflective element 330, a first driving mechanism 340, a second reflective element 350, and a third driving mechanism (not shown). The third driving mechanism is an object-side driving mechanism, and the second reflective element 350 is an object-side reflective element. The first driving mechanism 340 may be at least one of an autofocus driving mechanism and an optical image stabilization driving mechanism, and the imaging lens 310 may be a long back telephoto lens, but is not limited thereto.

[0146] An imaging lens 310 is used to converge an imaging ray onto an imaging surface (not shown), and an electronic photosensitive element 320 is disposed on the imaging surface. A first reflective element 330 is located on the image side of the imaging lens 310 and is mounted on the first drive mechanism 340, and is used to deflect the imaging ray. Specifically, the imaging ray enters the camera module 300 through an incident surface (not shown) of the second reflective element 350, and is then focused onto the imaging surface by the imaging lens 310. The first drive mechanism 340 has an autofocus function, while the third drive mechanism has an optical image stabilization function.

[0147] Depend on Figure 3B It is understood that the imaging lens 310 and the electronic photosensitive element 320 have a fixed relative position, and the first reflective element 330 moves relative to the imaging lens 310 and the electronic photosensitive element 320. This reduces the complexity of the assembly process and improves assembly efficiency.

[0148] Furthermore, when the first reflective element 330 approaches the imaging lens 310, it also approaches the electronic photosensitive element 320; when the first reflective element 330 moves away from the imaging lens 310, it also moves away from the electronic photosensitive element 320. Specifically, this disclosure provides a camera module 300 that can drive the first reflective element 330, and its configuration can shorten the operating distance of the first drive mechanism 340 and the third drive mechanism, enabling more sensitive image control.

[0149] By reducing the overall space through the first reflective element 330, more efficient space utilization can be achieved, and the miniaturization of the camera module 300 can be made feasible. In this way, the problem of long-distance drive is difficult to achieve due to the large focal length variation of telephoto lenses can be solved, thereby expanding the focusing range of telephoto lenses.

[0150] Figure 3C Draw Figure 3A A partial schematic diagram of the camera module 300 in the third embodiment. (From...) Figure 3CIt can be seen that the first reflecting element 330 includes an incident surface A, an exit surface B, and at least two reflecting surfaces 331 (e.g., ...). Figure 3E (Illustrated), where the imaging ray can be deflected from the incident surface A to the exit surface B, and the reflecting surface 331 moves in the same direction through the first driving mechanism 340. This secondary reflection structure can significantly reduce the size of the camera module 300. Specifically, the first reflecting element 330 can be made of plastic or glass; in the third embodiment, the first reflecting element 330 is made of plastic, but this is not a limitation. This provides greater design flexibility from an optical design perspective, facilitates the development of high-refractive-index plastic materials, and helps lower the barrier to developing optical elements with dual reflective surfaces.

[0151] Furthermore, at least one of the incident surface A and the exit surface B of the first reflecting element 330 has an aspherical surface. In the third embodiment, both the incident surface A and the exit surface B have aspherical surfaces, but this is not a limitation. Thus, the first reflecting element 330 can possess light refractive power, which can be used to correct optical aberrations.

[0152] The first drive mechanism 340 includes a support member 341, a moving member 342, at least one magnet, at least one magnetic member, a coil, and a plurality of rolling elements. Figure 3D Draw Figure 3A An exploded view of the first reflective element 330 and the first driving mechanism 340 in the third embodiment. Figure 3D As can be seen, in the third embodiment, the first driving mechanism 340 includes a support member 341, a moving member 342, a first magnet 343, a first magnetic member 344, a first coil 345 and a first rolling element 346, wherein the support member 341 also functions as a base.

[0153] In the third embodiment, the number of first magnets 343 is two, the number of first magnetic elements 344 is two, the number of first coils 345 is two, and the number of first rolling elements 346 is four, but it is not limited thereto.

[0154] In detail, the first reflective element 330 is mounted on the movable member 342, and the movable member 342 is movable relative to the support member 341. A magnet is disposed on the movable member 342. A magnetic element is disposed on the support member 341 and corresponds to the magnet, and a magnetic force is generated between the magnet and the magnetic element. Specifically, in the third embodiment, the first magnet 343 is disposed on the movable member 342, and the first magnetic element 344 is disposed on the support member 341 and corresponds to the first magnet 343, and a magnetic force is generated between the first magnet 343 and the first magnetic element 344, which is a mutual attraction force. This provides a preload force between the movable member 342 and the support member 341, which helps to improve the structural stability of the first drive mechanism 340.

[0155] Figure 3E Draw Figure 3A A top view of the camera module 300 in the third embodiment. Figure 3D and Figure 3E It is understood that the first drive mechanism 340 is used to drive the first reflective element 330 to move along a first translational degree of freedom F1. This achieves optical image stabilization of the camera module 300. Specifically, the degree of freedom may include surge, sway, heave, pitch, yaw, and roll, where surge, sway, and heave are translational degrees of freedom, while pitch, yaw, and roll are rotational degrees of freedom.

[0156] In detail, the first reflective element 330 has a first translational degree of freedom F1, and the first driving mechanism 340 is used to drive the first reflective element 330 to move along the direction of the first translational degree of freedom F1. In other words, the first reflective element 330 having a first translational degree of freedom F1 means that it can move in a specific direction on a specific plane, and the amount of driving displacement of the first reflective element 330 along the direction of the first translational degree of freedom F1 is less than the change in the back focus of the camera module 300. Further, the support member 341 and the moving member 342 provide the first translational degree of freedom F1, and the coil and the magnet generate a driving force in the direction of the first translational degree of freedom F1. Specifically, in the third embodiment, the first coil 345 and the first magnet 343 generate a driving force in the direction of the first translational degree of freedom F1. This enables the camera module 300 to achieve autofocus.

[0157] Depend on Figure 3D and Figure 3E It is understood that the support member 341 and the movable member 342 each include multiple grooves. Specifically, in the third embodiment, a groove 341a is included between the support member 341 and the movable member 342. In the third embodiment, the number of grooves 341a is four, but it is not limited to this.

[0158] Furthermore, the grooves 341a extend along the direction of the first translational degree of freedom F1, and each groove 341a is provided with a rolling element. In the third embodiment, each groove 341a is provided with a first rolling element 346. This improves the skewness that may occur in the first drive mechanism 340 and increases the linear stability of the movement.

[0159] Depend on Figure 3EIt can be seen that the reflective surface 331, the magnet, and the magnetic component are all symmetrically arranged along a symmetry axis X. Specifically, in the third embodiment, the reflective surface 331, the first magnet 343, and the first magnetic component 344 are all symmetrically arranged along the symmetry axis X. This simplifies the assembly of the camera module 300 and avoids misalignment during the assembly and manufacturing of the camera module 300, thereby improving the overall manufacturing yield of the camera module 300.

[0160] Figure 3F Draw Figure 3A A schematic diagram of the rotational degree of freedom R of the second reflecting element 350 in the third embodiment. (From...) Figure 3F It is known that the second reflective element 350 has a rotational degree of freedom R, and the third drive mechanism is used to drive the second reflective element 350 to rotate in the direction of the rotational degree of freedom R. Specifically, the third drive mechanism is used to drive the second reflective element 350 to rotate along an axis perpendicular to the incident light path and the exit light path. In this way, optical image stabilization is provided to the camera module 300 in another dimension.

[0161] Figure 3G Draw Figure 3A A schematic diagram of the parameters of the first reflective element 330 in the third embodiment is provided. Please refer to... Figure 3A and Figure 3G In the third embodiment, the refractive index of the first reflective element 330 for d-light is N, the wavelength of d-light is 587.6 nanometers, the thickness of the first reflective element 330 is H, the length of the camera module 300 is L, and the width of the camera module 300 is W. The parameters satisfy the conditions in Table 3 below.

[0162]

[0163] <Fourth Embodiment>

[0164] Figure 4A A schematic diagram of an electronic device 40 according to a fourth embodiment of the present invention is shown. Figure 4B Draw Figure 4A Another schematic diagram of the electronic device 40 in the fourth embodiment. Figure 4A and Figure 4B It is understood that the electronic device 40 in the fourth embodiment is a smartphone, and the electronic device 40 includes a camera module 41 (e.g., ...). Figure 4C (Illustrated), wherein camera module 41 includes an ultra-wide-angle camera module 41a, a high-resolution camera module 41b, and a telephoto camera module 41c, and the telephoto camera module 41c can be any of the camera modules in the first to third embodiments, but is not limited thereto. This helps to meet the current electronic device market's requirements for mass production and appearance of camera modules mounted thereon.

[0165] Furthermore, the user enters the shooting mode through the user interface 42 of the electronic device 40. In the fourth embodiment, the user interface 42 can be a touch screen, which is used to display the image and has touch function. It can also be used to manually adjust the shooting angle to switch between different camera modules 41. At this time, an imaging lens (not shown) of the camera module 41 collects the imaging light onto an electronic photosensitive element (not shown) and outputs the relevant electronic signal of the image to the image signal processing element (ISP) 43.

[0166] Figure 4C Drawing according to Figure 4A A block diagram of the electronic device 40 in the fourth embodiment. Figure 4B and Figure 4C It is understood that, depending on the camera specifications of the electronic device 40, the electronic device 40 may also include an optical image stabilization component 44. Furthermore, the electronic device 40 may also include at least one focus assist module 47 and at least one sensing element 45. The focus assist module 47 may be a color temperature compensation flash module 46, an infrared rangefinder, a laser focus module, etc. The sensing element 45 may have the function of sensing physical momentum and kinetic energy, such as an accelerometer, a gyroscope, or a Hall effect element, to sense the shaking and tremors caused by the user's hand or the external environment. This is beneficial to the autofocus function of the imaging lens in the electronic device 40 and the performance of the optical image stabilization component 44, so as to obtain good image quality and help the electronic device 40 according to the present disclosure to have multiple shooting modes, such as optimized Selfie, low light HDR (High Dynamic Range) imaging, and high resolution 4K video recording. In addition, users can directly view the camera's shooting screen through the user interface 42 and manually operate the framing range on the user interface 42 to achieve the WYSIWYG autofocus function.

[0167] Furthermore, the imaging lens, electronic image sensor, optical image stabilization component 44, sensing element 45, and focus assist module 47 can be mounted on a flexible printed circuit board (FPC) (not shown) and electrically connected to the imaging signal processing element 43 and other related components via a connector (not shown) to execute the shooting process. Current electronic devices, such as smartphones, tend to be thinner and lighter. Mounting the imaging lens and related components on a flexible printed circuit board and then using a connector to integrate the circuitry onto the mainboard of the electronic device satisfies the structural design and circuit layout requirements of the limited internal space of the electronic device, providing greater margin. It also allows for more flexible control of the imaging lens's autofocus function through the device's touchscreen. In the fourth embodiment, the electronic device 40 may include multiple sensing elements 45 and multiple focus assist modules 47. The sensing elements 45 and focus assist modules 47 are mounted on a flexible printed circuit board and at least one other flexible printed circuit board (not shown), and electrically connected to the imaging signal processing element 43 and other related components via corresponding connectors to execute the shooting process. In other embodiments (not shown), the sensing element and auxiliary optical element may also be mounted on the motherboard of the electronic device or other types of carrier boards, depending on the mechanical design and circuit layout requirements.

[0168] Furthermore, the electronic device 40 may further include, but is not limited to, a display unit, a control unit, a storage unit, a random access memory (RAM), a read-only memory (ROM), or a combination thereof.

[0169] Figure 4D Drawing according to Figure 4A A schematic diagram of an image captured by the ultra-wide-angle camera module 41a in the fourth embodiment. Figure 4D It can be seen that the ultra-wide-angle camera module 41a can capture images of a larger range and has the function of capturing more scenery.

[0170] Figure 4E Drawing according to Figure 4A A schematic diagram of an image captured by the high-resolution camera module 41b in the fourth embodiment. Figure 4E It can be seen that the high-pixel camera module 41b can capture images within a certain range and also has high pixel count, with high resolution and low distortion.

[0171] Figure 4F Drawing according to Figure 4A A schematic diagram of an image captured by the telephoto camera module 41c in the fourth embodiment. Figure 4F It is known that the telephoto camera module 41c has a high magnification function, which can capture images at a distance and magnify them to a high degree.

[0172] Depend on Figures 4D to 4F It is understood that by using camera modules 41 with different focal lengths for framing and combining them with image processing technology, the electronic device 40 can achieve the zoom function.

[0173] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A camera module characterized by comprising: Include: An imaging lens is used to focus an imaging beam onto an imaging surface; An electronic photosensitive element is disposed on the imaging surface; A first reflecting element, located on the image side of the imaging lens, is used to deflect the imaging light rays and has a first translational degree of freedom; and A first driving mechanism, wherein the first reflecting element is mounted on the first driving mechanism, and the first driving mechanism is used to drive the first reflecting element to move along the direction of the first translational degree of freedom, and the first driving mechanism includes: One support component; One moving part; At least two magnets are disposed on the moving part; and At least two magnetic elements are disposed on the support member and correspond to the at least two magnets; Wherein, when the first reflective element approaches the imaging lens, it also approaches the electronic photosensitive element; wherein, when the first reflective element moves away from the imaging lens, it also moves away from the electronic photosensitive element; wherein, there is a magnetic force between the at least two magnets and the at least two magnetic elements; The first reflective element comprises at least two reflective surfaces.

2. The camera module according to claim 1, characterized in that, The first reflective element is mounted on the movable member, and the support member and the movable member are movable relative to each other.

3. The camera module of claim 2, wherein, The support member and the movable member include a groove that extends along the direction of the first translational degree of freedom, and the groove is provided with a rolling element.

4. The camera module of claim 2, wherein, The first drive mechanism includes: A coil, which generates a driving force with the at least two magnets in the direction of the first translational degree of freedom.

5. The camera module of claim 1, wherein, The first reflective element has a second translational degree of freedom, which is orthogonal to the first translational degree of freedom.

6. The camera module of claim 1, wherein, The at least two reflective surfaces move in the same direction via the first drive mechanism.

7. The camera module of claim 1, wherein, The first reflective element includes an incident surface and an exit surface, at least one of which has an aspherical surface.

8. The camera module of claim 1, wherein, The first reflecting element has a refractive index of N for d-rays, and it satisfies the following condition: 1.66≤N<2.5。 9. The camera module of claim 8, wherein, The first reflecting element has a refractive index of N for d-rays, and it satisfies the following condition: 1.70≤N<2.5。 10. An electronic device, characterized in that, Include: The camera module as described in claim 1.

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