Camera module and electronic device

Abstract

The invention discloses a camera module which comprises an imaging lens, a variable light through hole mechanism, an electronic photosensitive element, an electronic photosensitive element driving module and a flexible printed circuit board. The imaging lens has an optical axis. The variable light through hole mechanism is arranged corresponding to the imaging lens so as to adjust the light through quantity of the imaging lens. The variable light through hole mechanism is provided with a first coil and a first magnet which are arranged oppositely. The electronic photosensitive element is arranged on the optical axis and is used for converting the imaging light passing through the imaging lens into an image signal. The electronic photosensitive element driving module is used for driving the electronic photosensitive element to move. The electronic photosensitive element driving module is provided with a second coil and a second magnet which are oppositely arranged. The flexible printed circuit board is electrically connected with the variable light through hole mechanism and the electronic photosensitive element driving module. The first coil and the second coil are arranged on the flexible printed circuit board. The invention further discloses an electronic device with the camera module.

Description

Technical Field

[0001] The invention relates to a camera module and an electronic device, in particular to a camera module suitable for the electronic device. Background Art

[0002] As semiconductor process technology becomes more sophisticated, the performance of electronic photosensitive elements has been improved, and pixels can reach a smaller size. Therefore, optical lenses with high imaging quality have become an indispensable part. In addition, with the rapid development of technology, the application range of electronic devices equipped with optical lenses has become wider, and the requirements for optical lenses have become more diverse.

[0003] In recent years, camera modules have been applied to electronic devices in more fields, such as portable devices such as smart phones and sports cameras, as well as head-mounted devices such as augmented reality (AR), virtual reality (VR), or drones. In addition, the hardware of camera modules is constantly updated, such as using larger photosensitive elements and using optical lenses with better image quality. The larger photosensitive elements can bring better imaging quality to users, but will cause background blur due to the shallow depth of field. An existing variable aperture can be used to change the depth of field and thus adjust the degree of background blur, and control the amount of light entering the optical lens, making the setting of a variable aperture in the optical lens of an electronic device a forward-looking topic. However, the existing optical lens often does not consider the integration of the drive mechanism between the variable aperture and the electronic photosensitive element driving module (image sensor actuating module) during design, making the optical lens too large. Therefore, how to improve the design of the optical lens to make the variable aperture and the electronic photosensitive element driving module highly integrated to meet the current high-standard requirements for electronic devices has become an important issue in the relevant field. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention provides a camera module that can highly integrate the variable aperture and the electronic photosensitive element driving module.

[0005] A camera module disclosed in an embodiment of the present invention comprises an imaging lens, a variable aperture mechanism, an electronic photosensitive element, an electronic photosensitive element driving module and a flexible printed circuit board. The imaging lens has an optical axis. The variable aperture mechanism is arranged corresponding to the imaging lens. The variable aperture mechanism is used to adjust the light transmission of the imaging lens. The variable aperture mechanism comprises a first driving mechanism. The first driving mechanism comprises at least one first coil and at least one first magnet arranged opposite to each other. The electronic photosensitive element is arranged on the optical axis. The electronic photosensitive element is used to convert the imaging light passing through the imaging lens into an image signal. The electronic photosensitive element driving module is used to drive the electronic photosensitive element to move in a direction parallel to or perpendicular to the optical axis. The electronic photosensitive element driving module comprises a second driving mechanism. The second driving mechanism comprises at least one second coil and at least one second magnet arranged opposite to each other. The flexible printed circuit board electrically connects the variable aperture mechanism and the electronic photosensitive element driving module. The at least one first coil of the first driving mechanism and the at least one second coil of the second driving mechanism are both arranged on the flexible printed circuit board. The height of the flexible printed circuit board along the direction parallel to the optical axis is Hf, and the height of the imaging lens along the direction parallel to the optical axis is Hi, which meets the following conditions: 1 <Hf / Hi<2.5。

[0006] Another embodiment of the present invention discloses an electronic device including the above-mentioned camera module.

[0007] According to the camera module and electronic device disclosed in the above embodiments, the at least one first coil of the variable aperture mechanism and the at least one second coil of the electronic photosensitive element driving module can be compactly arranged on a bendable flexible printed circuit board while establishing an electrical connection, which helps to miniaturize the camera module.

[0008] When Hf / Hi satisfies the above conditions, the volume of the camera module in the direction parallel to the optical axis can be further reduced, which helps to further miniaturize the volume of the camera module.

[0009] The above description of the content of the present invention and the following description of the embodiments are used to demonstrate and explain the principles of the present invention, and to provide a further explanation of the scope of the patent application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 FIG. 4 is a perspective schematic diagram of a camera module according to a first embodiment of the present invention.

[0011] Figure 2 yes Figure 1 A partially cutaway perspective schematic diagram of a camera module.

[0012] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the camera module with the outer shell removed.

[0013] Figure 4 yes Figure 3 Another three-dimensional schematic diagram of the camera module with the outer shell removed.

[0014] Figure 5 yes Figure 1 An exploded diagram of the camera module.

[0015] Figure 6 yes Figure 5 Another exploded diagram of the camera module.

[0016] Figure 7 yes Figure 1 Schematic diagram of a top view of a camera module.

[0017] Figure 8 yes Figure 7 Schematic side view of the camera module cut along line segment AA.

[0018] Fig. 9 yes Figure 8 An enlarged schematic diagram of the MM area of ​​the camera module.

[0019] Fig.10 yes Figure 8 An enlarged schematic diagram of the NN area of ​​the camera module.

[0020] Fig.11 yes Figure 7 A side view schematic diagram of the camera module cut along line segment BB.

[0021] Fig.12 yes Fig.11 An enlarged schematic diagram of the OO area of ​​the camera module.

[0022] Fig.13 yes Fig.11 An enlarged schematic diagram of the PP area of ​​the camera module.

[0023] Fig.14 yes Figure 7 Schematic side view of the camera module cut along the CC line segment.

[0024] Fig.15 yes Fig.14 An enlarged schematic diagram of the QQ area of ​​the camera module.

[0025] Fig.16 yes Figure 1 Exploded diagram of the variable aperture mechanism and flexible printed circuit board of the camera module.

[0026] Fig.17 yes Fig.16 Another exploded diagram of the variable aperture mechanism and flexible printed circuit board of the camera module.

[0027] Fig.18 yes Figure 1 Schematic diagram of the exploded view of the electronic photosensitive element driving module of the camera module.

[0028] Fig.19 yes Fig.18 Another exploded schematic diagram of the electronic photosensitive element driving module of the camera module.

[0029] Fig. 20 yes Figure 1 A three-dimensional schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0030] Fig.21 yes Fig. 20 A top view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0031] Fig. 22 yes Fig. 20 A front view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0032] Fig.23 yes Fig. 20 A side view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0033] Fig.24 FIG. 4 is a schematic side cross-sectional view of a camera module according to a second embodiment of the present invention.

[0034] Fig.25 yes Fig.24 An enlarged schematic diagram of the RR area of ​​the camera module.

[0035] Fig.26 FIG. 4 is a partial side cross-sectional schematic diagram of a camera module according to a third embodiment of the present invention.

[0036] Fig. 27 FIG. 4 is a perspective schematic diagram of a camera module according to a fourth embodiment of the present invention.

[0037] Fig.28 yes Fig. 27 A partially cutaway perspective schematic diagram of a camera module.

[0038] Fig.29 yes Fig. 27 A three-dimensional schematic diagram of the camera module with the outer shell removed.

[0039] Fig.30 yes Fig.29 Another three-dimensional schematic diagram of the camera module with the outer shell removed.

[0040] Fig.31 yes Fig. 27 An exploded diagram of the camera module.

[0041] Fig.32 yes Fig.31 Another exploded diagram of the camera module.

[0042] Fig.33 yes Fig. 27 Schematic diagram of a top view of a camera module.

[0043] Fig.34 yes Fig.33 Schematic side view of the camera module cut along line segment DD.

[0044] Fig.35 yes Fig.34 An enlarged schematic diagram of the SS area of ​​the camera module.

[0045] Fig.36 yes Fig.34 An enlarged schematic diagram of the TT area of ​​the camera module.

[0046] Fig.37 yes Fig.33 Schematic side view of the camera module cut along line segment EE.

[0047] Fig.38 yes Fig.37 An enlarged schematic diagram of the UU area of ​​the camera module.

[0048] Fig.39 yes Fig.37 An enlarged schematic diagram of the VV area of ​​the camera module.

[0049] Fig.40 yes Fig.33 A side view schematic diagram of the camera module cut along the FF line segment.

[0050] Fig.41 yes Fig.40 An enlarged schematic diagram of the WW area of ​​the camera module.

[0051] Fig.42 yes Fig. 27 Exploded diagram of the variable aperture mechanism and flexible printed circuit board of the camera module.

[0052] Fig.43 yes Fig.42 Another exploded diagram of the variable aperture mechanism and flexible printed circuit board of the camera module.

[0053] Fig.44 yes Fig. 27 Schematic diagram of the exploded view of the electronic photosensitive element driving module of the camera module.

[0054] Fig.45 yes Fig.44 Another exploded schematic diagram of the electronic photosensitive element driving module of the camera module.

[0055] Fig.46 yes Fig. 27 A three-dimensional schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0056] Fig.47 yes Fig.46 A top view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0057] Fig.48 yes Fig.46 A front view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0058] Fig.49 yes Fig.46 A side view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0059] Fig.50 It is a three-dimensional schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module according to a fifth embodiment of the present invention.

[0060] Fig.51 yes Fig.50 A top view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0061] Fig.52 yes Fig.50 A front view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0062] Fig.53 yes Fig.50 A side view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0063] Fig.54 A schematic three-dimensional diagram of an electronic device according to a sixth embodiment of the present invention is shown.

[0064] Fig.55 Draw Fig.54 A three-dimensional schematic diagram of the other side of the electronic device.

[0065] Fig.56 Draw Fig.54 A system block diagram of an electronic device.

[0066] Fig.57 Draw Fig.54Schematic diagram of an image captured by an electronic device using a wide-viewing angle camera module.

[0067] Fig.58 Draw Fig.54 Schematic diagram of an image captured by an electronic device using a variable aperture camera module with an aperture value of 1.4.

[0068] Fig.59 Draw Fig.54 Schematic diagram of an image captured by an electronic device using a variable aperture camera module with an aperture value of 5.6.

[0069]

Explanation of symbols

[0070] 1, 2, 4, 60a, 60b, 60c, 60d, 60e: Camera module

[0071] 10, 20, 40: Shell

[0072] 11, 21, 41: Imaging lens

[0073] 110, 210, 410, 510: optical axis

[0074] 111, 211, 411: Optical lens group

[0075] 111a, 211a, 411a: plastic lens

[0076] 211b, 311b: Glass lens

[0077] 12, 22, 42, 52: Variable aperture mechanism

[0078] 120, 420: base body

[0079] 121, 421: first driving mechanism

[0080] 1211, 4211: First coil

[0081] 1212, 4212: First Magnet

[0082] 122, 422: Shade set

[0083] 1221, 4221: Shading film

[0084] 123, 423: Fixing parts

[0085] 124, 424: movable parts

[0086] 125, 425: Cover

[0087] 13, 23, 43: Electronic photosensitive elements

[0088] 14, 24, 44, 54: Electronic photosensitive element drive module

[0089] 141, 441: Second driving mechanism

[0090] 1411, 4411: Second coil

[0091] 1412, 4412: Second magnet

[0092] 142, 442: Image stabilization module

[0093] 1421, 4421: Photosensitive element carrier

[0094] 1422, 4422: first movable plate

[0095] 1423, 4423: first rolling bearing

[0096] 1424, 4424: second movable plate

[0097] 1425, 4425: first ferromagnetic element

[0098] 143, 443: Image focus module

[0099] 1431, 4431: second rolling bearing

[0100] 1432, 4432: Base

[0101] 1433, 4433: third rolling bearing

[0102] 1434, 4434: frame components

[0103] 1434a, 4434a: Upper cover

[0104] 1434b, 4434b: Lower cover

[0105] 1434c, 4434c: Installation structure

[0106] 1435, 4435: second ferromagnetic element

[0107] 15, 25, 45, 55: Flexible printed circuit board

[0108] 151, 451, 551: tapered part

[0109] 552: Reinforcement structure

[0110] 15a, 45a: Part I

[0111] 15b, 45b: Part 2

[0112] 6: Electronic devices

[0113] 6a: Warning light

[0114] 62: Flash module

[0115] 63: Focus assist module

[0116] 64: Single chip system

[0117] 65: Display device

[0118] 651: Zoom control key

[0119] 652: Focus and photo button

[0120] 653: Video playback button

[0121] 654: Camera module switch button

[0122] 655: Integrated menu button

[0123] 67:Biometric Sensor

[0124] 68: Circuit Board

[0125] 681: Connector

[0126] 69: Electronic components

[0127] A1, A2, A3: Direction

[0128] BP: Turning point

[0129] CM: Circumferential direction

[0130] LM: Maximum outer diameter

[0131] LR:Rounded corners

[0132] LV: Raw edge

[0133] MM, NN, OO, PP, QQ, RR, SS, TT, UU, VV, WW: area

[0134] OBJ: Object

[0135] RL: Rolling element

[0136] TH:Through hole

[0137] X, Y, Z: axis

[0138] θ: turning angle

[0139] Hf: Height of the flexible printed circuit board along the direction parallel to the optical axis

[0140] Hi: The height of the imaging lens along the direction parallel to the optical axis

[0141] Ng: Number of glass lenses

[0142] Np: Number of plastic lenses

[0143] Tmax: Maximum thickness of the tapered portion in the direction parallel to the optical axis

[0144] Tmin: Minimum thickness of the tapered portion in the direction parallel to the optical axis Detailed implementation mode

[0145] The detailed features and advantages of the present invention are described in detail in the following embodiments. The content is sufficient for any person skilled in the art to understand the technical content of the present invention and implement it accordingly. According to the content disclosed in this specification, the scope of the patent application, and the drawings, any person skilled in the art can easily understand the related purposes and advantages of the present invention. The following embodiments further illustrate the viewpoints of the present invention in detail, but do not limit the scope of the present invention in any way.

[0146] The present invention provides a camera module, which includes an imaging lens, a variable aperture mechanism, an electronic photosensitive element, an electronic photosensitive element driving module, and a flexible printed circuit board.

[0147] The imaging lens has an optical axis. The imaging lens may include an optical lens group. The optical axis can pass through the optical lens group. The optical lens group may include at least one plastic lens and at least one glass lens; thereby, the optical lens group can have more stable optical performance for temperature effects.

[0148] Among them, the number of the at least one plastic lens is Np, and the number of the at least one glass lens is Ng, which can meet the following conditions: 1 ≤ Ng < Np ≤ 12. Thereby, a better lens number setting range can be used to balance the weight and optical performance of the imaging lens. Please refer to Fig.24 , which shows multiple plastic lenses 211a and one glass lens 211b according to the second embodiment of the present invention.

[0149] Among them, the at least one glass lens can be made by grinding or molding methods, but the present invention is not limited thereto. Among them, at least one of the at least one glass lens can be a molded glass lens; thereby, the glass lens can have better production efficiency. Among them, the outer diameter surface of the molded glass lens may not have a feeding mark and the edge ridge line may present a rounded corner appearance. Please refer to Fig.25 , which shows the rounded corner LR of the glass lens 211b according to the second embodiment of the present invention, but the present invention is not limited thereto.

[0150] Among them, the outer diameter surface of the molded glass lens may have a burr (vestiger), and the maximum outer diameter observed from the outside of the molded glass lens may be located on the burr. Please refer to Fig.26, depicts a burr LV and a maximum outer diameter LM of a glass lens 311 b according to a third embodiment of the present invention, but the present invention is not limited thereto.

[0151] The variable aperture mechanism corresponds to the imaging lens setting. The variable aperture mechanism is used to adjust the light transmission of the imaging lens. In other words, the variable aperture mechanism provides a variable aperture value, so that the camera module can effectively respond to shooting environments with different light input requirements; thereby, the imaging quality can be improved.

[0152] The variable light-through hole mechanism may include a first driving mechanism, a shading sheet group, a fixed part and a movable part. The first driving mechanism includes at least one first coil and at least one first magnet arranged opposite to each other. The shading sheet group may include a plurality of shading sheets. These shading sheets may be stacked on each other along a circumferential direction surrounding the optical axis to form a light-through hole, and the aperture size of the light-through hole is variable. The fixed part may be connected to the shading sheet group. The movable part may be connected to the shading sheet group, and the at least one first magnet may be arranged on the movable part to be arranged opposite to the at least one first coil. The first driving mechanism may be used to drive the movable part to rotate in a circumferential direction relative to the fixed part, so as to drive the shading sheet group to adjust the aperture size of the light-through hole; through the appropriate configuration of the fixed part and the movable part, the driving efficiency of the first driving mechanism may be optimized.

[0153] The electronic photosensitive element is arranged on the optical axis and is used for converting the imaging light passing through the imaging lens into an image signal.

[0154] The electronic photosensitive element driving module is used to drive the electronic photosensitive element to move in a direction parallel to or perpendicular to the optical axis. For example, if the optical axis is the Z axis, the direction perpendicular to the optical axis can be any direction on the XY plane defined by the X axis and the Y axis, and the electronic photosensitive element can move in a direction parallel to the Z axis, and the electronic photosensitive element can also move in any direction on the XY plane.

[0155] The electronic photosensitive element driving module may include a second driving mechanism, an image stabilization module and an image focusing module. The second driving mechanism includes at least one second coil and at least one second magnet disposed opposite to each other. The image stabilization module and the image focusing module may be disposed corresponding to each other.

[0156] The image stabilization module can be used to drive the electronic photosensitive element to move in a direction perpendicular to the optical axis. The image stabilization module can include a photosensitive element carrier, a first movable plate, at least one first rolling support, a second movable plate and a first ferromagnetic element. The photosensitive element carrier can carry the electronic photosensitive element. There can be no relative displacement between the photosensitive element carrier and the electronic photosensitive element. The first movable plate can be coupled with the photosensitive element carrier, and the second driving mechanism can drive the first movable plate to move in a direction perpendicular to the optical axis relative to the imaging lens. The at least one first rolling support can be rotatably arranged on the first movable plate. The second movable plate can be connected to the first movable plate through the at least one first rolling support, and the second driving mechanism can drive the second movable plate to move in a direction perpendicular to the optical axis relative to the first movable plate. The first ferromagnetic element can be made by embedding injection with the first movable plate; thereby, the first ferromagnetic element can be embedded in the first movable plate, which helps to improve the structural strength of the first movable plate.

[0157] The image focusing module can be used to drive the electronic photosensitive element to move in a direction parallel to the optical axis. The image focusing module can include at least one second rolling support, a base, at least one third rolling support, a frame element and a second ferromagnetic element. The at least one second rolling support can be rotatably arranged on the second movable plate. The base can be connected to the second movable plate through the at least one second rolling support, and the second driving mechanism can drive the base to move relative to the imaging lens in a direction parallel to the optical axis. The at least one third rolling support can be rotatably arranged on the base. The frame element can be connected to the base through the at least one third rolling support. The second ferromagnetic element can be made by embedding injection with the base; thereby, the second ferromagnetic element can be embedded in the base, which helps to improve the structural strength of the base. Among them, the second ferromagnetic element can be arranged facing the at least one second magnet; thereby, the preload force required by the at least one second magnet can be provided, so that the at least one second magnet can be installed more firmly. Among them, the at least one second magnet of the second driving mechanism can be arranged on the first movable plate, the second movable plate or the base. When the number of the at least one second magnet of the second driving mechanism is three, the second magnet may be respectively disposed on the first movable plate, the second movable plate and the base, but the present invention is not limited thereto.

[0158] The frame element may have a mounting structure. The mounting structure can be used for mounting the imaging lens so that there is no relative displacement between the imaging lens and the frame element. Thus, the functions of optical image stabilization and autofocus can be concentrated on the electronic photosensitive element driving module, thereby simplifying the design of the flexible printed circuit board and improving the space utilization rate of the camera module. Among them, the frame element can also be formed by coupling an upper cover and a lower cover, the mounting structure is located on the upper cover, and the lower cover is in physical contact with the at least one third rolling support member, but the present invention is not limited thereto. Among them, the imaging lens may have no relative displacement within the camera module. By making the frame element have no relative displacement within the camera module, the imaging lens can be relatively fixed within the camera module.

[0159] The flexible printed circuit board is electrically connected to the variable aperture mechanism and the electronic photosensitive element driving module. Among them, the at least one first coil of the first driving mechanism and the at least one second coil of the second driving mechanism are both arranged on the flexible printed circuit board. By arranging at least a part of the variable aperture mechanism and the electronic photosensitive element driving module on the bendable flexible printed circuit board, it helps to miniaturize the volume of the camera module. Among them, the flexible printed circuit board can be electrically connected to the variable aperture mechanism, the electronic photosensitive element and the electronic photosensitive element driving module at the same time. Thus, at the same time of establishing the electrical connection, at least a part of the variable aperture mechanism, the electronic photosensitive element and the electronic photosensitive element driving module can be compactly arranged on the bendable flexible printed circuit board, which helps to further miniaturize the volume of the camera module. Among them, the flexible printed circuit board can include a first part and a second part connected to each other. The first part can be located near the variable aperture mechanism. The second part can be located near the electronic photosensitive element driving module. The first part can be closer to the optical axis than the second part.

[0160] The height of the flexible printed circuit board in the direction parallel to the optical axis is Hf, and the height of the imaging lens in the direction parallel to the optical axis is Hi, which satisfy the following condition: 1 < Hf / Hi < 2.5. Thus, further, the volume of the camera module in the direction parallel to the optical axis can be reduced, which helps to further miniaturize the volume of the camera module. Please refer to Fig.14 and Fig.11 , which respectively show Hf and Hi according to the first embodiment of the present invention.

[0161] The flexible printed circuit board may have a tapered portion. Wherein, the tapered portion may taper along a direction parallel to the optical axis; thereby, the displacement and deformation of the flexible printed circuit board during the operation of the image stabilization module can be concentrated on the tapered portion, so that other parts of the flexible printed circuit board are not affected, thereby improving the operation quality of the camera module, but the present invention is not limited thereto. The maximum thickness of the tapered portion along the direction parallel to the optical axis is Tmax, and the minimum thickness of the tapered portion along the direction parallel to the optical axis is Tmin, which may satisfy the following conditions: 1 < Tmax / Tmin < 4.5; thereby, the elastic margin of the flexible printed circuit board can be increased, so that the flexible printed circuit board is not easily damaged during the movement of the electronic photosensitive element, especially during the movement along the direction perpendicular to the optical axis. Among them, the following conditions may also be satisfied: 1.1 < Tmax / Tmin < 3.9; thereby, a proportional setting range with better elastic margin can be obtained for the flexible printed circuit board. Please refer to Fig. 22 and Fig.23 , which shows Tmax and Tmin according to the first embodiment of the present invention.

[0162] The flexible printed circuit board may further have a reinforcing structure at a turning position between the variable aperture mechanism and the electronic photosensitive element driving module; thereby, it can prevent the flexible printed circuit board from breaking due to an excessive turning angle and improve the product qualification rate. Among them, the turning angle of the flexible printed circuit board at the turning position may be greater than 90 degrees. Among them, the reinforcing structure may be a thin semi-flexible laminate (FR4) made of glass-reinforced epoxy laminate, a metal plate... etc., but the present invention is not limited thereto. Please refer to Fig.50 and Fig.53 , which shows the reinforcing structure 552 according to the fifth embodiment of the present invention.

[0163] The present invention provides an electronic device, which includes the aforementioned camera module.

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

[0165] <First Embodiment>

[0166] Please refer to Figures 1 to 15 , wherein Figure 1 is a three-dimensional schematic diagram of the camera module shown according to the first embodiment of the present invention, Figure 2 is Figure 1 a partially cut-away three-dimensional schematic diagram of the camera module, Figure 3 is Figure 1 a three-dimensional schematic diagram of the camera module with the housing removed, Figure 4 is Figure 3 another three-dimensional schematic diagram of the camera module with the housing removed, Figure 5 is Figure 1 An exploded diagram of the camera module. Figure 6 yes Figure 5 Another exploded view of the camera module, Figure 7 yes Figure 1 A top view of the camera module. Figure 8 yes Figure 7 A schematic side view of the camera module cut along line AA. Fig. 9 yes Figure 8 An enlarged schematic diagram of the MM area of ​​the camera module, Fig.10 yes Figure 8 An enlarged schematic diagram of the NN area of ​​the camera module, Fig.11 yes Figure 7 A side view schematic diagram of the camera module cut along line segment BB, Fig.12 yes Fig.11 An enlarged schematic diagram of the OO area of ​​the camera module. Fig.13 yes Fig.11 An enlarged schematic diagram of the PP area of ​​the camera module. Fig.14 yes Figure 7 A schematic side view of the camera module cut along line CC, and Fig.15 yes Fig.14 An enlarged schematic diagram of the QQ area of ​​the camera module.

[0167] The present embodiment provides a camera module 1 , which includes a housing 10 , an imaging lens 11 , a variable aperture mechanism 12 , an electronic photosensitive element 13 , an electronic photosensitive element driving module 14 and a flexible printed circuit board 15 .

[0168] The imaging lens 11 is at least partially disposed in the housing 10. The imaging lens 11 has an optical axis 110. The imaging lens 11 includes an optical lens group 111. The optical axis 110 passes through the optical lens group 111. The optical lens group 111 includes a plurality of plastic lenses 111a. Please note that in the partial side cross-sectional schematic diagram, due to the turning of the cross-sectional surface, the size of the interior of the imaging lens 11 in the front view is slightly different. In order to avoid unnecessary blurring of the features of the present invention, only the cross-sectional lines are used to represent the interior of the imaging lens 11.

[0169] Please refer to Fig.16 and Fig.17 ,in Fig.16 yes Figure 1 An exploded diagram of the variable aperture mechanism and the flexible printed circuit board of the camera module, and Fig.17 yes Fig.16 Another exploded diagram of the variable aperture mechanism and flexible printed circuit board of the camera module.

[0170] The variable aperture mechanism 12 is arranged corresponding to the imaging lens 11. The variable aperture mechanism 12 can adjust the light transmission of the imaging lens 11. In other words, the variable aperture mechanism 12 provides a variable aperture value, so that the camera module 1 can effectively respond to shooting environments with different light transmission requirements.

[0171] The variable aperture mechanism 12 includes a base 120, a first driving mechanism 121, a light shielding sheet set 122, a fixing member 123, a movable member 124 and a cover 125. The first driving mechanism 121 is located on one side of the base 120. The first driving mechanism 121 includes two first coils 1211 and two first magnets 1212. The first coil 1211 is disposed on the flexible printed circuit board 15. The first magnet 1212 is disposed relative to the first coil 1211, such as Fig. 9 As shown. The shading sheet group 122 includes a plurality of shading sheets 1221. These shading sheets 1221 are stacked on each other along a circumferential direction CM surrounding the optical axis 110 to form a light through hole TH, and the aperture size of the light through hole TH is variable. The fixing member 123 is disposed on the base 120 and connected to the shading sheet group 122. The movable member 124 is rotatably disposed on the base 120 and connected to the shading sheet group 122 through a rolling element RL, and the first magnet 1212 is disposed on the movable member 124 to be disposed opposite to the first coil 1211. The cover body 125 is disposed on a side of the shading sheet group 122 away from the fixing member 123 and the movable member 124. The first driving mechanism 121 can drive the movable member 124 to rotate along the circumferential direction CM relative to the fixing member 123, so as to drive the shading sheet group 122 to adjust the aperture size of the light through hole TH.

[0172] Please refer to Fig.18 and Fig.19 ,in Fig.18 yes Figure 1 An exploded schematic diagram of the electronic photosensitive element driving module of the camera module, and Fig.19 yes Fig.18 Another exploded schematic diagram of the electronic photosensitive element driving module of the camera module.

[0173] The electronic photosensitive element 13 is disposed in the housing 10. The electronic photosensitive element 13 is disposed on the optical axis 110. The electronic photosensitive element 13 can convert the imaging light passing through the imaging lens 11 into an image signal.

[0174] The electronic photosensitive element driving module 14 can drive the electronic photosensitive element 13 to move in a direction parallel to or perpendicular to the optical axis 110. In this embodiment, the optical axis 110 is the Z axis, and the direction perpendicular to the optical axis 110 is any direction on the XY plane defined by the X axis and the Y axis. The electronic photosensitive element 13 can be driven to move in a direction parallel to the Z axis or in any direction on the XY plane.

[0175] The electronic photosensitive element driving module 14 includes a second driving mechanism 141, an image stabilization module 142, and an image focusing module 143. The second driving mechanism 141 includes three second coils 1411 and three second magnets 1412. The second coils 1411 are disposed on three sides of the flexible printed circuit board 15, such as Fig.16 and Fig.17 The second magnet 1412 is arranged relative to the second coil 1411, as shown. Fig.10 , Fig.12 and Fig.13 The image stabilization module 142 and the image focusing module 143 are disposed along the optical axis 110 correspondingly.

[0176] The image stabilization module 142 can drive the electronic photosensitive element 13 to move in a direction perpendicular to the optical axis 110. Specifically, the image stabilization module 142 includes a photosensitive element carrier 1421, a first movable plate 1422, a plurality of first rolling bearings 1423, a second movable plate 1424 and a first ferromagnetic element 1425. The photosensitive element carrier 1421 carries the electronic photosensitive element 13, and there is no relative displacement between the photosensitive element carrier 1421 and the electronic photosensitive element 13. The first movable plate 1422 is coupled to the photosensitive element carrier 1421, and one of the second magnets 1412 is disposed on the first movable plate 1422, so that the second driving mechanism 141 can drive the first movable plate 1422 to move relative to the imaging lens 11 in a direction perpendicular to the optical axis 110 (such as Fig.18 The first rolling support 1423 is rotatably disposed on the first movable plate 1422. The second movable plate 1424 is connected to the first movable plate 1422 via the first rolling support 1423, and another second magnet 1412 is disposed on the second movable plate 1424, so that the second driving mechanism 141 can drive the second movable plate 1424 to move relative to the first movable plate 1422 in a direction perpendicular to the optical axis 110 (such as Fig.18 The first ferromagnetic element 1425 and the first movable plate 1422 are formed by injection molding.

[0177] The image focusing module 143 can drive the electronic photosensitive element 13 to move along a direction parallel to the optical axis 110. Specifically, the image focusing module 143 includes a plurality of second rolling supports 1431, a base 1432, a plurality of third rolling supports 1433, a frame element 1434, and a second ferromagnetic element 1435. The second rolling supports 1431 are rotatably disposed on the second movable plate 1424. The base 1432 is connected to the second movable plate 1424 through the second rolling supports 1431, and a second magnet 1412 is left on the base 1432, so that the second driving mechanism 141 can drive the base 1432 to move relative to the imaging lens 11 along a direction parallel to the optical axis 110 (such as Fig.18 The third rolling bearing 1433 is rollably disposed between the bases 1432. The frame element 1434 is connected to the base 1432 through the third rolling bearing 1433. The second ferromagnetic element 1435 is formed by embedding injection molding with the base 1432. The second ferromagnetic element 1435 is disposed facing the second magnet 1412 disposed on the base 1432.

[0178] The frame element 1434 is formed by coupling an upper cover 1434a and a lower cover 1434b. The lower cover 1434b is in physical contact with the third rolling support member 1433. The frame element 1434 has a mounting structure 1434c. The mounting structure 1434c is located on the upper cover 1434a. The mounting structure 1434c can be used to mount the imaging lens 11, so that there is no relative displacement between the imaging lens 11 and the frame element 1434, and further, by making the frame element 1434 have no relative displacement in the camera module 1, the imaging lens 11 can have no relative displacement in the camera module 1, that is, the imaging lens 11 can be relatively fixed in the camera module 11.

[0179] Please refer to Figure 20 to Figure 23 ,in Fig. 20 yes Figure 1 A three-dimensional schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module, Fig.21 yes Fig. 20 A top view of a flexible printed circuit board, a first coil and a second coil of a camera module, Fig. 22 yes Fig. 20 A front view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module, and Fig.23 yes Fig. 20 A side view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0180] The flexible printed circuit board 15 is electrically connected to the variable light hole mechanism 12 and the electronic photosensitive element driving module 14, and the first coil 1211 of the first driving mechanism 121 and the second coil 1411 of the second driving mechanism 141 are both disposed on the flexible printed circuit board 15. The flexible printed circuit board 15 is electrically connected to the variable light hole mechanism 12, the electronic photosensitive element 13 and the electronic photosensitive element driving module 14. The flexible printed circuit board 15 includes a first portion 15a and a second portion 15b connected to each other. The first portion 15a is located near the variable light hole mechanism 12. The second portion 15b is located near the electronic photosensitive element driving module 14. The first portion 15a is closer to the optical axis 110 than the second portion 15b.

[0181] The height of the flexible printed circuit board 15 along the direction parallel to the optical axis 110 is Hf (eg Fig.14 ), the height of the imaging lens 11 along the direction parallel to the optical axis 110 is Hi (as shown in Fig.11 As shown), it satisfies the following conditions: Hf = 13.44 [mm]; Hi = 9.04 [mm]; and Hf / Hi = 1.49.

[0182] The flexible printed circuit board 15 has a tapered portion 151. The tapered portion 151 tapers in a direction parallel to the optical axis 110. Fig. 22 and Fig.23 The maximum thickness of the tapered portion 151 in the direction parallel to the optical axis 110 is Tmax, and the minimum thickness of the tapered portion 151 in the direction parallel to the optical axis 110 is Tmin, which satisfies the following conditions: Tmax = 5.3 [mm]; Tmin = 1.59 [mm], 3.6 [mm]; and Tmax / Tmin = 3.33, 1.47.

[0183] <Second Embodiment>

[0184] Please refer to Figure 24 to Figure 25 ,in Fig.24 is a schematic side cross-sectional view of a camera module according to a second embodiment of the present invention, and Fig.25 yes Fig.24 This embodiment is similar to the first embodiment, so only the differences will be described below with necessary explanations.

[0185] The present embodiment provides a camera module 2 , which includes a housing 20 , an imaging lens 21 , a variable aperture mechanism 22 , an electronic photosensitive element 23 , an electronic photosensitive element driving module 24 and a flexible printed circuit board 25 .

[0186] The imaging lens 21 is at least partially disposed in the housing 20. The imaging lens 21 has an optical axis 210. The imaging lens 21 includes an optical lens group 211. The optical axis 210 passes through the optical lens group 211. The optical lens group 211 includes seven plastic lenses 211a and one glass lens 211b, wherein the glass lens 211b is located on the object side of the plastic lens 211a. The number of plastic lenses 211a is Np, and the number of glass lenses 211b is Ng, which satisfies the following conditions: Np=7; Ng=1; and Ng <Np。

[0187] The glass lens 211b is a molded glass lens. The outer diameter surface of the glass lens 211b has no injection marks, and its edge ridges have a rounded appearance, such as Fig.25 The glass lens 211b is shown with a rounded corner LR.

[0188] The variable aperture mechanism 22 is arranged corresponding to the imaging lens 21. The variable aperture mechanism 22 can adjust the light transmission of the imaging lens 21. In other words, the variable aperture mechanism 22 provides a variable aperture value, so that the camera module 2 can effectively respond to shooting environments with different light input requirements.

[0189] The electronic photosensitive element 23 is disposed in the housing 20. The electronic photosensitive element 23 is disposed on the optical axis 210. The electronic photosensitive element 23 can convert the imaging light passing through the imaging lens 21 into an image signal.

[0190] The electronic photosensitive element driving module 24 can drive the electronic photosensitive element 23 to move along a direction parallel to or perpendicular to the optical axis 210 .

[0191] The flexible printed circuit board 25 is electrically connected to the variable light aperture mechanism 22 and the electronic photosensitive element driving module 24. The flexible printed circuit board 25 is also electrically connected to the variable light aperture mechanism 22, the electronic photosensitive element 23 and the electronic photosensitive element driving module 24.

[0192] The height of the flexible printed circuit board 25 along the direction parallel to the optical axis 210 is Hf, and the height of the imaging lens 21 along the direction parallel to the optical axis 210 is Hi, which satisfies the following conditions: Hf=13.81 [mm]; Hi=9.39 [mm]; and Hf / Hi=1.47.

[0193] <Third Embodiment>

[0194] Please refer to Fig.26 , is a partial side cross-sectional schematic diagram of a camera module according to a third embodiment of the present invention. This embodiment is similar to the second embodiment, so only the differences are described below.

[0195] In this embodiment, the outer diameter surface of the glass lens 311b may have a burr edge LV, so that the maximum outer diameter LM of the glass lens 311b observed from the outside is located on the burr edge LV. Fig.26 The burr LV and the maximum outer diameter LM of the glass lens 311b are shown.

[0196] <Fourth Embodiment>

[0197] Please refer to Figures 27 to 41 ,in Fig. 27 is a three-dimensional schematic diagram of a camera module according to a fourth embodiment of the present invention. Fig.28 yes Fig. 27 A partially cutaway perspective diagram of a camera module. Fig.29 yes Fig. 27 A three-dimensional schematic diagram of the camera module with the outer shell removed. Fig.30 yes Fig.29 Another three-dimensional schematic diagram of the camera module with the housing removed, Fig.31 yes Fig. 27 An exploded diagram of the camera module. Fig.32 yes Fig.31 Another exploded view of the camera module, Fig.33 yes Fig. 27 A top view of the camera module. Fig.34 yes Fig.33 A side view of the camera module cut along line segment DD. Fig.35 yes Fig.34 An enlarged schematic diagram of the SS area of ​​the camera module. Fig.36 yes Fig.34 An enlarged schematic diagram of the TT area of ​​the camera module. Fig.37 yes Fig.33 A side view of the camera module cut along line EE. Fig.38 yes Fig.37 An enlarged schematic diagram of the UU area of ​​the camera module. Fig.39 yes Fig.37 An enlarged schematic diagram of the VV area of ​​the camera module, Fig.40 yes Fig.33 A schematic side view of the camera module cut along line segment FF, and Fig.41 yes Fig.40 An enlarged schematic diagram of the WW area of ​​the camera module.

[0198] The present embodiment provides a camera module 4 , which includes a housing 40 , an imaging lens 41 , a variable aperture mechanism 42 , an electronic photosensitive element 43 , an electronic photosensitive element driving module 44 and a flexible printed circuit board 45 .

[0199] The imaging lens 41 is at least partially disposed in the housing 40. The imaging lens 41 has an optical axis 410. The imaging lens 41 includes an optical lens group 411. The optical axis 410 passes through the optical lens group 411. The optical lens group 411 includes a plurality of plastic lenses 411a. Please note that in the partial side cross-sectional schematic diagram, due to the turning of the cross-sectional surface, the size of the interior of the imaging lens 41 in the front view is slightly different. In order to avoid unnecessary blurring of the features of the present invention, only the cross-sectional lines are used to represent the interior of the imaging lens 41.

[0200] Please refer to Fig.42 and Fig.43 ,in Fig.42 yes Fig. 27 An exploded diagram of the variable aperture mechanism and the flexible printed circuit board of the camera module, and Fig.43 yes Fig.42 Another exploded diagram of the variable aperture mechanism and flexible printed circuit board of the camera module.

[0201] The variable aperture mechanism 42 is arranged corresponding to the imaging lens 41. The variable aperture mechanism 42 can adjust the light transmission of the imaging lens 41. In other words, the variable aperture mechanism 42 provides a variable aperture value, so that the camera module 4 can effectively respond to shooting environments with different light transmission requirements.

[0202] The variable aperture mechanism 42 includes a base 420, a first driving mechanism 421, a light shielding sheet set 422, a fixing member 423, a movable member 424 and a cover 425. The first driving mechanism 421 is located on one side of the base 420. The first driving mechanism 421 includes two first coils 4211 and two first magnets 4212. The first coil 4211 is disposed on the flexible printed circuit board 45. The first magnet 4212 is disposed relative to the first coil 4211, such as Fig.35 As shown. The shading sheet group 422 includes a plurality of shading sheets 4221. These shading sheets 4221 are stacked on each other along a circumferential direction CM surrounding the optical axis 410 to form a light through hole TH, and the aperture size of the light through hole TH is variable. The fixing member 423 is disposed on the base 420 and connected to the shading sheet group 422. The movable member 424 is rotatably disposed on the base 420 and connected to the shading sheet group 422 through a rolling element RL, and the first magnet 4212 is disposed on the movable member 424 to be disposed opposite to the first coil 4211. The cover body 425 is disposed on a side of the shading sheet group 422 away from the fixing member 423 and the movable member 424. The first driving mechanism 421 can drive the movable member 424 to rotate along the circumferential direction CM relative to the fixing member 423 to drive the shading sheet group 422 to adjust the aperture size of the light through hole TH.

[0203] Please refer to Fig.44 and Fig.45 ,in Fig.44 yes Fig. 27 An exploded schematic diagram of the electronic photosensitive element driving module of the camera module, and Fig.45 yes Fig.44 Another exploded schematic diagram of the electronic photosensitive element driving module of the camera module.

[0204] The electronic photosensitive element 43 is disposed in the housing 40. The electronic photosensitive element 43 is disposed on the optical axis 410. The electronic photosensitive element 43 can convert the imaging light passing through the imaging lens 41 into an image signal.

[0205] The electronic photosensitive element driving module 44 can drive the electronic photosensitive element 43 to move in a direction parallel to or perpendicular to the optical axis 410. In this embodiment, the optical axis 410 is the Z axis, and the direction perpendicular to the optical axis 410 is any direction on the XY plane defined by the X axis and the Y axis. The electronic photosensitive element 43 can be driven to move in a direction parallel to the Z axis or in any direction on the XY plane.

[0206] The electronic photosensitive element driving module 44 includes a second driving mechanism 441, an image stabilization module 442, and an image focusing module 443. The second driving mechanism 441 includes three second coils 4411 and three second magnets 4412. The second coils 4411 are disposed on three sides of the flexible printed circuit board 45, such as Fig.42 and Fig.43 The second magnet 4412 is arranged relative to the second coil 4411, as shown. Fig.36 , Fig.38 and Fig.39 The image stabilization module 442 and the image focusing module 443 are disposed along the optical axis 410 correspondingly.

[0207] The image stabilization module 442 can drive the electronic photosensitive element 43 to move in a direction perpendicular to the optical axis 410. Specifically, the image stabilization module 442 includes a photosensitive element carrier 4421, a first movable plate 4422, a plurality of first rolling bearings 4423, a second movable plate 4424 and a first ferromagnetic element 4425. The photosensitive element carrier 4421 carries the electronic photosensitive element 43, and there is no relative displacement between the photosensitive element carrier 4421 and the electronic photosensitive element 43. The first movable plate 4422 is coupled to the photosensitive element carrier 4421, and one of the second magnets 4412 is disposed on the first movable plate 4422, so that the second driving mechanism 441 can drive the first movable plate 4422 to move relative to the imaging lens 41 in a direction perpendicular to the optical axis 410 (such as Fig.44The first rolling support 4423 is rotatably disposed on the first movable plate 4422. The second movable plate 4424 is connected to the first movable plate 4422 via the first rolling support 4423, and another second magnet 4412 is disposed on the second movable plate 4424, so that the second driving mechanism 441 can drive the second movable plate 4424 to move relative to the first movable plate 4422 in a direction perpendicular to the optical axis 410 (such as Fig.44 The first ferromagnetic element 4425 and the first movable plate 4422 are formed by injection molding.

[0208] The image focusing module 443 can drive the electronic photosensitive element 43 to move along the direction parallel to the optical axis 410. Specifically, the image focusing module 443 includes a plurality of second rolling supports 4431, a base 4432, a plurality of third rolling supports 4433, a frame element 4434 and a second ferromagnetic element 4435. The second rolling supports 4431 are rotatably disposed on the second movable plate 4424. The base 4432 is connected to the second movable plate 4424 through the second rolling supports 4431, and a second magnet 4412 is left on the base 4432, so that the second driving mechanism 441 can drive the base 4432 to move relative to the imaging lens 41 along the direction parallel to the optical axis 410 (such as Fig.44 The third rolling bearing 4433 is rollably disposed between the bases 4432. The frame element 4434 is connected to the base 4432 through the third rolling bearing 4433. The second ferromagnetic element 4435 is formed by embedding injection molding with the base 4432. The second ferromagnetic element 4435 is disposed facing the second magnet 4412 disposed on the base 4432.

[0209] The frame element 4434 is formed by coupling an upper cover 4434a and a lower cover 4434b. The lower cover 4434b is in physical contact with the third rolling support member 4433. The frame element 4434 has a mounting structure 4434c. The mounting structure 4434c is located on the upper cover 4434a. The mounting structure 4434c can be used to mount the imaging lens 41, so that there is no relative displacement between the imaging lens 41 and the frame element 4434, and further, by making the frame element 4434 have no relative displacement in the camera module 4, the imaging lens 41 can have no relative displacement in the camera module 4, that is, the imaging lens 41 can be relatively fixed in the camera module 41.

[0210] Please refer to Figure 46 to Figure 49 ,in Fig.46 yes Fig. 27 A three-dimensional schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module, Fig.47 yes Fig.46A top view of a flexible printed circuit board, a first coil and a second coil of a camera module, Fig.48 yes Fig.46 A front view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module, and Fig.49 yes Fig.46 A side view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module.

[0211] The flexible printed circuit board 45 is electrically connected to the variable light hole mechanism 42 and the electronic photosensitive element driving module 44, and the first coil 4211 of the first driving mechanism 421 and the second coil 4411 of the second driving mechanism 441 are both disposed on the flexible printed circuit board 45. The flexible printed circuit board 45 is electrically connected to the variable light hole mechanism 42, the electronic photosensitive element 43 and the electronic photosensitive element driving module 44. The flexible printed circuit board 45 includes a first portion 45a and a second portion 45b connected to each other. The first portion 45a is located near the variable light hole mechanism 42. The second portion 45b is located near the electronic photosensitive element driving module 44. The first portion 45a is closer to the optical axis 410 than the second portion 45b.

[0212] The height of the flexible printed circuit board 45 along the direction parallel to the optical axis 410 is Hf (eg Fig.40 ), the height of the imaging lens 41 along the direction parallel to the optical axis 410 is Hi (as shown in Fig.37 As shown), it satisfies the following conditions: Hf = 11.25 [mm]; Hi = 6.95 [mm]; and Hf / Hi = 1.62.

[0213] The flexible printed circuit board 45 has a tapered portion 451. The tapered portion 451 tapers in a direction parallel to the optical axis 410. Fig.48 and Fig.49 The maximum thickness of the tapered portion 451 along the direction parallel to the optical axis 410 is Tmax, and the minimum thickness of the tapered portion 451 along the direction parallel to the optical axis 410 is Tmin, which satisfies the following conditions: Tmax = 5.3 [mm]; Tmin = 1.59 [mm], 3.6 [mm]; and Tmax / Tmin = 3.33, 1.47.

[0214] <Fifth Embodiment>

[0215] Please refer to Figure 50 to Figure 53 ,in Fig.50 is a three-dimensional schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module according to a fifth embodiment of the present invention. Fig.51 yes Fig.50 A top view of a flexible printed circuit board, a first coil and a second coil of a camera module, Fig.52 yes Fig.50 A front view schematic diagram of a flexible printed circuit board, a first coil and a second coil of a camera module, and Fig.53 yes Fig.50 The present invention is a schematic side view of a flexible printed circuit board, a first coil and a second coil of a camera module. This embodiment is similar to the fourth embodiment, so only the differences are described below.

[0216] In this embodiment, the flexible printed circuit board 55 has a tapered portion 551. The tapered portion 551 tapers in a direction parallel to the optical axis 510. Fig.52 and Fig.53 The maximum thickness of the tapered portion 551 along the direction parallel to the optical axis 510 is Tmax, and the minimum thickness of the tapered portion 551 along the direction parallel to the optical axis 510 is Tmin, which satisfies the following conditions: Tmax = 5.3 [mm]; Tmin = 1.61 [mm], 3.54 [mm]; and Tmax / Tmin = 3.29, 1.50.

[0217] The flexible printed circuit board 55 may further have a reinforcement structure 552 at a turning point BP between the variable light hole mechanism 52 and the electronic photosensitive element driving module 54. Fig.50 , Fig.51 and Fig.53 The turning angle θ of the flexible printed circuit board 55 at the turning position BP is 102.6 degrees. Fig.53 shown.

[0218] <Sixth Embodiment>

[0219] Please refer to Figure 54 to Figure 56 ,in Fig.54 FIG. 4 is a three-dimensional schematic diagram of an electronic device according to a sixth embodiment of the present invention. Fig.55 Draw Fig.54 A three-dimensional schematic diagram of the other side of the electronic device, and Fig.56 Draw Fig.54 A system block diagram of an electronic device.

[0220] In the present embodiment, the electronic device 6 is a mobile device, wherein the mobile device may be a computer, a smart phone, a smart wearable device, a drone, or a vehicle-used image recording and display instrument, etc., but the present invention is not limited thereto. The electronic device 6 includes a variable aperture camera module 60a, a wide-angle camera module 60b, a macro camera module 60c, a micro camera module 60d, a time of flight (ToF) camera module 60e, a flash module 62, a focus assist module 63, an image signal processor (not separately labeled), a display device 65, an image software processor (not separately labeled), and a biometric sensor 67. Among them, the variable aperture camera module 60a is, for example, the camera module 1 of the first embodiment, but the present invention is not limited thereto. The camera modules 60b, 60c, 60d, and 60e may also be, for example, the camera modules of other embodiments of the present invention described above.

[0221] The camera modules 60a, 60b and 60c are all disposed on the same side of the electronic device 6. The camera modules 60d, 60e and the display device 65 are all disposed on the other side of the electronic device 6, and the display device 65 can be a user interface, so that the camera modules 60d and 60e can be used as front lenses to provide a selfie function, but the present invention is not limited thereto.

[0222] The camera modules 60a, 60b and 60c of this embodiment have different viewing angles, so that the electronic device 6 can provide different magnifications to achieve the optical zoom shooting effect. For example, the wide-view camera module 60b has a wider maximum viewing angle, and the image it captures can refer to Fig.57 , which shows a schematic diagram of an image captured by the electronic device 6 using the wide-viewing angle camera module 60b, wherein the captured image includes the entire church, surrounding buildings and people on the square. Fig.57 The image has a larger viewing angle and depth of field, but is often accompanied by greater distortion. The image captured by the variable aperture camera module 60a at a smaller aperture value can be referred to Fig.58 , and the images captured at larger aperture values ​​can be referred to Fig.59 . Fig.58 A schematic diagram of an image captured by the electronic device 6 with the variable aperture camera module 60a at an aperture value of 1.4 is shown, and Fig.59 FIG. 6 shows a schematic diagram of an image captured by the electronic device 6 using the variable aperture camera module 60a with an aperture value of 5.6, wherein the captured image includes a flock of birds flying in front of the church. Fig.58 As shown in FIG. 6 , when the variable aperture camera module 60a has a larger aperture, the electronic photosensitive element receives more light, but the background is more blurred. Fig.59As shown, when the variable through-hole group of the variable aperture camera module 60a provides a smaller through-hole, the electronic photosensitive element obtains less light, but a clearer background can be obtained. Fig.58 and Fig.59 The image has a smaller viewing angle, so that the variable aperture camera module 60a can be used to shoot moving targets. The autofocus drive unit drives the lens carrier to quickly and continuously autofocus on the target, so that the target will not be blurred due to being far away from the focus position; when taking pictures, the variable aperture camera module 60a can further perform optical zoom on the shooting subject to obtain a clearer image. In addition, the time-of-flight ranging camera module 60e can obtain the depth information of the image. The above-mentioned electronic device 6 is taken as an example including multiple camera modules 60a, 60b, 60c, 60d, and 60e, but the number and configuration of the camera modules are not used to limit the present invention.

[0223] When the user takes a picture of the object OBJ, the electronic device 6 uses the camera module 60a, the camera module 60b or the camera module 60c to focus and take an image, activates the flash module 62 for fill light, and uses the object distance information of the object OBJ provided by the focus auxiliary module 63 for fast focusing, and the image signal processor performs image optimization processing to further improve the image quality produced by the lens group. The focus auxiliary module 63 can use an infrared or laser focus auxiliary system to achieve fast focusing.

[0224] In addition, the electronic device 6 can also use the camera module 60d or the camera module 60e to take pictures. When the camera module 60d or the camera module 60e takes pictures, a prompt light 6a can be lit to remind the user that the electronic device 6 is taking pictures. The display device 65 can use a touch screen or a physical shooting button of a zoom control key 651 and a focus and photo button 652 to perform image shooting and image processing in conjunction with the diverse functions of the image software processor. The image processed by the image software processor can be displayed on the display device 65. The user can also replay the previously shot image through the image playback button 653 of the display device 65, or select a suitable camera module to take pictures through the camera module switching button 654, and can also adjust the appropriate shooting conditions for the current shooting scene through the integrated menu button 655.

[0225] Furthermore, the electronic device 6 further includes a circuit board 68, and the circuit board 68 carries a plurality of electronic components 69. The camera modules 60a, 60b, 60c, 60d, and 60e are electrically connected to the electronic components 69 via a connector 681 on the circuit board 68, wherein the electronic components 69 may include a signal transmitting module, and the image may be transmitted to other electronic devices or cloud storage via the signal transmitting module. The signal transmitting module may be a wireless network technology (Wireless Fidelity, WiFi) module, a Bluetooth module, an infrared module, a network service module, or an integrated module of the above-mentioned multiple signal transmitting modules, and the present invention is not limited thereto.

[0226] The electronic component 69 may also include a storage unit, a random access memory to store image signals, a gyroscope, and a position locator to facilitate navigation or positioning of the electronic device 6. In this embodiment, the image signal processor, the image software processor, and the random access memory are integrated into a single chip system 64, but the present invention is not limited to this configuration. In some other embodiments, the electronic component may also be integrated into a camera module or may also be set on one of the multiple circuit boards. In addition, the biometric sensor 67 may provide functions such as powering on and unlocking the electronic device 6.

[0227] The camera module of the present invention is not limited to being used in smart phones. The camera module can be used in a mobile focus system as required, and has the characteristics of excellent aberration correction and good imaging quality. For example, the camera module can be widely used in electronic devices such as three-dimensional (3D) image capture, digital cameras, mobile devices, tablet computers, smart TVs, network monitoring equipment, driving recorders, reversing imaging devices, multi-lens devices, identification systems, somatosensory game consoles and wearable devices. The above-mentioned electronic devices are only exemplary examples of the actual application of the present invention, and do not limit the scope of application of the camera module of the present invention.

[0228] Although the present invention is disclosed as above by the aforementioned embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the patent protection scope of the present invention shall be determined by the claims attached to this specification.

Claims

1. A camera module, characterized in that: Include: an imaging lens having an optical axis; a variable aperture mechanism, disposed corresponding to the imaging lens, wherein the variable aperture mechanism is used to adjust the light throughput of the imaging lens, and the variable aperture mechanism includes: A first driving mechanism, comprising at least one first coil and at least one first magnet disposed opposite to each other; an electronic photosensitive element disposed on the optical axis, wherein the electronic photosensitive element is used to convert imaging light passing through the imaging lens into an image signal; An electronic photosensitive element driving module, used to drive the electronic photosensitive element to move in a direction parallel to or perpendicular to the optical axis, wherein the electronic photosensitive element driving module comprises: a second driving mechanism, comprising at least one second coil and at least one second magnet disposed opposite to each other; and A flexible printed circuit board electrically connecting the variable light aperture mechanism and the electronic photosensitive element driving module; Wherein, the at least one first coil of the first driving mechanism and the at least one second coil of the second driving mechanism are both disposed on the flexible printed circuit board; Wherein, the height of the flexible printed circuit board along the direction parallel to the optical axis is Hf, and the height of the imaging lens along the direction parallel to the optical axis is Hi, which satisfies the following conditions: 1 <Hf / Hi<2.5。 2. The camera module according to claim 1, characterized in that: The flexible printed circuit board is electrically connected to the variable light-through hole mechanism, the electronic photosensitive element and the electronic photosensitive element driving module at the same time.

3. The camera module according to claim 1, wherein: The flexible printed circuit board has a tapered portion, the maximum thickness of the tapered portion in a direction parallel to the optical axis is Tmax, and the minimum thickness of the tapered portion in a direction parallel to the optical axis is Tmin, which satisfies the following conditions: 1 <Tmax / Tmin<4.5。 4. The camera module according to claim 3, characterized in that: The maximum thickness of the tapered portion along the direction parallel to the optical axis is Tmax, and the minimum thickness of the tapered portion along the direction parallel to the optical axis is Tmin, which satisfies the following conditions: 1.1 <Tmax / Tmin<3.9。 5. The camera module according to claim 1, wherein: The variable aperture mechanism further comprises: A light shielding sheet set, comprising a plurality of light shielding sheets, wherein the light shielding sheets are stacked on each other along a circumferential direction surrounding the optical axis to form a light through hole, and the aperture size of the light through hole is variable; A fixing member connected to the light shielding sheet group; as well as A movable part is connected to the light shielding plate group, wherein the at least one first magnet is arranged on the movable part to be arranged opposite to the at least one first coil.

6. The camera module according to claim 5, characterized in that: The first driving mechanism is used to drive the movable member to rotate relative to the fixed member along the circumferential direction, so as to drive the light shielding sheet group to adjust the aperture size of the light-through hole.

7. The camera module according to claim 1, characterized in that: The electronic photosensitive element driving module further includes an image stabilization module and an image focusing module which are arranged corresponding to each other.

8. The camera module according to claim 7, characterized in that: The image stabilization module is used to drive the electronic photosensitive element to move along a direction perpendicular to the optical axis, and the image stabilization module includes: A photosensitive element carrier, carrying the electronic photosensitive element; a first movable plate coupled to the photosensitive element carrier, wherein the second driving mechanism drives the first movable plate to move relative to the imaging lens in a direction perpendicular to the optical axis; At least one first rolling support member, rotatably disposed on the first movable plate; a second movable plate connected to the first movable plate through the at least one first rolling bearing, wherein the second driving mechanism drives the second movable plate to move relative to the first movable plate in a direction perpendicular to the optical axis; and A first ferromagnetic element and the first movable plate are formed by embedded injection molding.

9. The camera module according to claim 8, characterized in that: The image focusing module is used to drive the electronic photosensitive element to move along a direction parallel to the optical axis, and the image focusing module includes: at least one second rolling support member, rotatably disposed on the second movable plate; a base connected to the second movable plate through the at least one second rolling support, wherein the second driving mechanism drives the base to move relative to the imaging lens in a direction parallel to the optical axis; At least one third rolling support member, rotatably disposed on the base; a frame element connected to the base via the at least one third rolling bearing; as well as A second ferromagnetic element is formed by embedding the base with the base through injection molding.

10. The camera module according to claim 1, wherein: The flexible printed circuit board includes a first part and a second part connected to each other, the first part is located near the variable light hole mechanism, the second part is located near the electronic photosensitive element driving module, and the first part is closer to the optical axis than the second part.

11. The camera module according to claim 10, characterized in that: The flexible printed circuit board further has a reinforcement structure at a turning position between the variable light-through hole mechanism and the electronic photosensitive element driving module.

12. The camera module according to claim 1, wherein: The imaging lens comprises: An optical lens set includes at least one plastic lens and at least one glass lens.

13. The camera module according to claim 12, characterized in that: The number of the at least one plastic lens is Np, and the number of the at least one glass lens is Ng, which satisfies the following conditions: 1≤Ng <Np≤12。 14. The camera module according to claim 12, wherein: At least one of the at least one glass lens is a molded glass lens.

15. The camera module according to claim 9, characterized in that: The frame element has a mounting structure, and the mounting structure is used to mount the imaging lens so that there is no relative displacement between the imaging lens and the frame element.

16. The camera module according to claim 15, characterized in that: The imaging lens has no relative displacement within the camera module.

17. The camera module according to claim 3, characterized in that: The tapered portion of the flexible printed circuit board tapers along a direction parallel to the optical axis.

18. An electronic device, characterized in that: Include: The camera module according to claim 1.

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