Light hole module, camera module and electronic device

Abstract

A light hole module includes a leaf set and a cover element along a central axis in sequence. The leaf set includes a plurality of leaves. The leaves form a light hole, and the light hole is variable in size with the central axis as a center. The cover element covers the leaf set, and the cover element has a through hole. The through hole is arranged corresponding to the light hole. The cover element includes a falling surface structure. The falling surface structure is arranged corresponding to one of the leaves, and the falling surface structure is closer to the leaf than the through hole. A camera module having the light hole module and an electronic device having the camera module are also disclosed.

Description

Technical Field

[0001] This invention relates to a light-transmitting aperture module, a camera module, and an electronic device, particularly a light-transmitting aperture module and a camera module suitable for electronic devices. Background Technology

[0002] With advancements in semiconductor technology, the performance of electronic image sensors has improved, allowing pixels to reach smaller sizes. Therefore, optical lenses with high image quality have become an indispensable component. Furthermore, with the rapid development of technology, mobile devices equipped with optical lenses are being used in a wider range of applications, leading to more diverse requirements for these lenses.

[0003] In recent years, camera modules have been applied to more fields, such as portable devices like smartphones and action cameras, as well as head-mounted devices like Augmented Reality (AR) and Virtual Reality (VR) headsets and drones. Furthermore, the hardware of camera modules is constantly being iterated and updated, for example, using larger image sensors and imaging lenses with better image quality. While larger image sensors provide better image quality, they can also cause background blur. Existing variable apertures can adjust the degree of background blur and control the amount of light entering the imaging lens by changing the size of the aperture. However, the variable aperture size is achieved through a blade group composed of multiple blades, which often results in some blades floating up, causing the center position of the aperture to shift or light leakage, thus degrading optical quality. Summary of the Invention

[0004] In view of the above-mentioned problems, the present invention discloses a light-transmitting aperture module, a camera module, and an electronic device that can meet the requirement of the variable aperture of the camera module for precise blade position.

[0005] This invention provides a light-transmitting aperture module, comprising a blade assembly and a cover element sequentially along a central axis. The blade assembly includes multiple blades. These blades form a light-transmitting aperture, and the aperture's size is variable about the central axis. The cover element covers the blade assembly and has a through-hole. The through-hole corresponds to the light-transmitting aperture. The cover element includes a lowered surface structure. The lowered surface structure corresponds to one of the blades and is closer to the blade than the through-hole. In a direction parallel to the central axis, the gap thickness between the lowered surface structure and the blade is Gap, and the thickness of the blade is Thi, satisfying the following condition:

[0006] 0.001≤Gap / Thi≤0.995.

[0007] This invention provides a camera module comprising the aforementioned light-transmitting aperture module and a lens group. The lens group is disposed on the central axis corresponding to the light-transmitting aperture.

[0008] The present invention provides an electronic device comprising the aforementioned camera module.

[0009] According to the light-transmitting aperture module, camera module, and electronic device disclosed in this invention, the light-transmitting aperture module is configured with a cover element including a lowering structure. The lowering structure reduces the lifting of the blades during rotation, thereby ensuring stable stroke of the blades during rotation and preventing light leakage or misalignment of the light-transmitting aperture.

[0010] When the gap / thi meets the above conditions, an appropriate gap thickness can improve stroke stability while ensuring the accuracy of the light-transmitting hole position.

[0011] The foregoing description of the disclosure and the following description of the embodiments are used to demonstrate and explain the spirit and principles of the present invention, and to provide a further explanation of the claims of the present invention. Attached Figure Description

[0012] Figure 1 A perspective view of a camera module according to a first embodiment of the present invention is shown.

[0013] Figure 2 Draw Figure 1 An exploded view of the camera module.

[0014] Figure 3 Draw Figure 1 A cross-sectional diagram of the aperture module and lens group of the camera module.

[0015] Figure 4 Draw Figure 1 An exploded view of the aperture module of the camera module.

[0016] Figure 5 Draw Figure 4 An exploded view of the camera module's cover element, base, and rotating element.

[0017] Figure 6 Draw Figure 4 An exploded view of the rotating element, base, and driving magnet of the camera module.

[0018] Figure 7 Draw Figure 4 A top view of the cover element of the camera module.

[0019] Figure 8 Draw Figure 4 A top view of one of the movable blades of the camera module.

[0020] Figure 9 Draw Figure 4 An exploded view of the camera module's cover element and blade assembly.

[0021] Figure 10 Draw Figure 4 A side view of the camera module after assembly of the cover element, blade group, base and rotating element.

[0022] Figure 11 Draw Figure 10 A partially enlarged schematic diagram of the cover element and blade assembly.

[0023] Figure 12 Draw Figure 10 Another enlarged schematic diagram of the cover element and blade assembly.

[0024] Figure 13 A partial top view schematic diagram of the aperture module of the camera module according to the first embodiment of the present invention when the aperture is in a large aperture state.

[0025] Figure 14 A partial top view schematic diagram of the camera module according to the first embodiment of the present invention when the aperture module is in a small aperture state.

[0026] Figure 15 An exploded view of the light-transmitting hole module according to a second embodiment of the present invention is shown.

[0027] Figure 16 Draw Figure 15 A top view of the cover element of the light-transmitting hole module.

[0028] Figure 17 Draw Figure 15 An exploded view of the cover element and blade assembly of the light-transmitting hole module.

[0029] Figure 18 An exploded view of the light-transmitting hole module according to a third embodiment of the present invention is shown.

[0030] Figure 19 Draw Figure 18 An exploded view of the cover element and blade assembly of the light-transmitting hole module.

[0031] Figure 20 A perspective view of an electronic device according to a fourth embodiment of the present invention is shown.

[0032] Figure 21 Draw Figure 20 A three-dimensional diagram of the other side of the electronic device.

[0033] Figure 22 Draw Figure 20 System block diagram of an electronic device.

[0034] Figure 23 Draw Figure 20 A schematic diagram of an image captured by an electronic device using a light-transmitting aperture module in a small aperture state.

[0035] Figure 24 Draw Figure 20 A schematic diagram of an image captured by an electronic device using a aperture module at a large aperture.

[0036] Figure 25 A schematic diagram illustrating the electrical connections of a drive controller, a position sensor, and a drive coil according to an embodiment of the present invention is shown.

[0037] Figure 26 A schematic diagram illustrating the electrical connection between a drive controller and a drive coil according to an embodiment of the present invention is shown.

[0038] Figure 27 Draw Figure 25 or Figure 26 Block diagram of the feedback control system for the drive controller, drive coil and position sensing circuit.

[0039] [Symbol Explanation]

[0040] 1: Camera Module

[0041] 10: Imaging Lens

[0042] 20: Lens carrier

[0043] 110, 110', 110”: Light transmission hole module

[0044] 120: Lens Group

[0045] 100: Light transmission hole

[0046] 111: Blade assembly

[0047] 111a, 111b: Blades

[0048] 1110: Surface

[0049] 1111: First drive hole

[0050] 1112: Second drive hole

[0051] 1113: Smooth surface

[0052] 1114: Rough surface

[0053] 112, 112', 112”: Cover element

[0054] 1120, 1120': Corresponding holes

[0055] 112a: Through hole

[0056] 112b, 112b': Lowering surface structure

[0057] 112c: Sub-descending surface structure

[0058] 112d: Feet

[0059] 112e: Side

[0060] 1121, 1121': First corresponding hole

[0061] 1122, 1122': Second corresponding hole

[0062] 113, 113': Base

[0063] 1131, 1131': Positioning structure

[0064] 1132: Support surface

[0065] 113a: First component

[0066] 113b: Second component

[0067] 113c: First axis structure

[0068] 114: Rotating element

[0069] 114a: Second shaft structure

[0070] 115: Driver Components

[0071] 115a: Driving magnet

[0072] 115b: Drive coil

[0073] 115c: Electronic components

[0074] 115d: Circuit element

[0075] 116: Ferromagnetic elements

[0076] 117: Rolling element

[0077] CA: Central Axis

[0078] Dis, Dis1: Distance between the lowered surface structure and the bearing surface

[0079] Dis2: Distance between the secondary descending surface structure and the bearing surface

[0080] Gap, Gap1: The gap thickness between the lower surface structure and the blade.

[0081] Gap2: The thickness of the gap between the secondary descending surface structure and the blade.

[0082] Thi: the thickness of the leaf

[0083] DCU: Drive Controller

[0084] PSU: Position Sensor

[0085] PSC: Position Sensing Circuit

[0086] CL: Drive coil

[0087] VCC: Power supply

[0088] GND: Grounding

[0089] 2: Electronic devices

[0090] 1a: Camera module

[0091] 1b: Wide-angle camera module

[0092] 1c: Macro camera module

[0093] 1d: Camera Module

[0094] 1e: Time-of-Flight Distance Camera Module

[0095] 3: Flash module

[0096] 4: Focusing Assist Module

[0097] 5: Display device

[0098] 51: Zoom control button

[0099] 52: Focus and take photo button

[0100] 53: Video playback button

[0101] 54: Camera module switching button

[0102] 55: Integrated menu button

[0103] 6: Biometric sensors

[0104] 7: Indicator Light

[0105] 8: Circuit board

[0106] 81: Connector

[0107] 9: Electronic components

[0108] 91: Single-chip system

[0109] OBJ: Subject Detailed Implementation

[0110] The following detailed description of the features and advantages of the present invention in the embodiments is sufficient to enable any person skilled in the art to understand the technical content of the present invention and to implement it accordingly. Based on the disclosure of this specification, the claims, and the accompanying drawings, any person skilled in the art can easily understand the related objects and advantages of the present invention. The following embodiments further illustrate the points of the present invention in detail, but are not intended to limit the scope of the present invention in any way.

[0111] This invention provides a light-transmitting aperture module, which sequentially includes a blade assembly and a cover element along a central axis. The blade assembly includes multiple blades. These blades form a light-transmitting aperture, and the size of the light-transmitting aperture is variable about the central axis. The cover element covers the blade assembly. The cover element has a through hole, and the through hole is correspondingly arranged with the light-transmitting aperture. The cover element includes a lowered surface structure, which is correspondingly arranged with one of the blades, and the lowered surface structure is closer to the blade than the through hole. Therefore, the lowered surface structure can reduce the tendency of the blades to float during rotation, thereby ensuring stable stroke of the blades during rotation and preventing light leakage or misalignment of the light-transmitting aperture.

[0112] In the direction parallel to the central axis, the gap thickness between the lowering surface structure and the blade is Gap, and the blade thickness is Thi, which satisfies the following condition: 0.001≤Gap / Thi≤0.995. With an appropriate gap thickness, the accuracy of the light-transmitting aperture position can be ensured while maintaining stable lifting stroke. Alternatively, the following condition can also be satisfied: 0.01≤Gap / Thi≤0.9. Or, the following condition can also be satisfied: 0.05≤Gap / Thi≤0.8.

[0113] The cover element may further include a secondary descending surface structure, which is correspondingly positioned to another blade. In the direction parallel to the central axis, the secondary descending surface structure is closer to the through-hole of the cover element than the descending surface structure. By having different depths between the secondary descending surface structure and the descending surface structure, a gap can be created between the different blades in the direction parallel to the central axis, thus preventing friction between the blades during rotation.

[0114] The cover element can be a stamped part. This reduces the weight of the cover element and minimizes its impact on the camera module drive. The cover element can be a stamped part made of metal or plastic.

[0115] The light-transmitting aperture module may further include a base, which is fixed relative to the cover element. The base includes a first shaft structure. The blades are movable within a specific range according to the first shaft structure to control the size of the light-transmitting aperture. Specifically, the size of the light-transmitting aperture is controlled by changing the relative position between the blades and the first shaft structure, causing the blades to move closer to or further away from the central axis.

[0116] The base may include a bearing surface. The bearing surface is located further away from the drop-face structure (or secondary drop-face structure) than the blade, and the blade may be positioned on the bearing surface. In the direction parallel to the central axis, the distance between the drop-face structure and the bearing surface is Dis, and the blade thickness is Thi, which satisfies the following condition: 1.001 ≤ Dis / Thi ≤ 1.995. This provides an adequate space between the drop-face structure (or secondary drop-face structure) and the base to accommodate the blade and allow for its rotation.

[0117] The lowered surface structure (or secondary lowered surface structure) of the cover element may include a first corresponding hole, and the first corresponding hole is disposed opposite to the first shaft structure. The blade of the blade assembly may include a first drive hole. The first drive hole corresponds to the first corresponding hole, and the first shaft structure passes through the first drive hole. The combination of the first corresponding hole and the first drive hole helps to prevent the blade from detaching from the first shaft structure.

[0118] The light-transmitting aperture module may further include a rotating element that rotates around a central axis. The rotating element includes a second shaft structure. The blades are linked to the second shaft structure to change the size of the light-transmitting aperture. Specifically, the rotating element drives the blades to move and / or rotate, and cooperates with the first shaft structure at the base, thereby changing the size of the light-transmitting aperture.

[0119] The lowered surface structure (or secondary lowered surface structure) of the cover element may include a second corresponding hole, and the second corresponding hole is disposed opposite to the second shaft structure. The blades of the blade assembly may include a second drive hole. The second drive hole corresponds to the second corresponding hole, and the second shaft structure passes through the second drive hole. The combination of the second corresponding hole and the second drive hole helps to prevent the blades from detaching from the second shaft structure.

[0120] The light-transmitting aperture module may further include a driving magnet and a driving coil. The driving magnet is disposed on the rotating element, and the driving coil is disposed opposite to the magnet to drive the rotating element to rotate. By disposing the driving magnet on the rotating element and cooperating with the driving magnet and the driving coil, errors caused by gaps are avoided.

[0121] The light-transmitting module may further include a position sensing circuit. This circuit is positioned opposite the drive magnet to sense the position of the rotating element. The position sensing circuit enables feedback from the control loop, thereby increasing the drive speed.

[0122] The light-transmitting aperture module may further include a ferromagnetic element. The ferromagnetic element is disposed at the base and opposite to the driving magnet. The ferromagnetic element is located further away from the cover element than the rotating element to maintain the relative position of the rotating element and the cover element. The ferromagnetic element can attract the rotating element to the base, thereby maintaining the relative position between the rotating element and the cover element, and thus maintaining the gap thickness between the cover element and the blade.

[0123] The light-transmitting hole module may further include multiple rolling elements. The rolling elements are positioned between the base and the rotating element. The rolling elements guide the rotation of the rotating element, making the rotating element rotatable. The rolling elements can be spheres, cylinders, cones, etc.

[0124] In the plane perpendicular to the central axis, the projected area of ​​the descending surface structure (or sub-descending surface structure) can be smaller than the projected area of ​​a single blade. This helps to reduce the contact area, thereby preventing wear on the blade surface.

[0125] The surface of the down-facing structure (or sub-down-facing structure) of the cover element faces the blade, and the arithmetic mean roughness (Ra) of the down-facing structure surface can be less than 0.25 micrometers (μm); this helps to reduce friction on the blade and extend the service life of the light-transmitting aperture module. The arithmetic mean roughness (Ra) of the down-facing structure (or sub-down-facing structure) surface can also be less than 0.2 micrometers. Alternatively, the arithmetic mean roughness (Ra) of the down-facing structure (or sub-down-facing structure) surface can be less than 0.17 micrometers.

[0126] The lowered surface structure (or sub-lowered surface structure) of the cover element faces the blade surface, and the arithmetic mean roughness (Ra) of the surface or its smooth areas can be less than 0.25 micrometers (μm); this helps reduce friction on the blade and extends the service life of the light-transmitting aperture module. The arithmetic mean roughness (Ra) of the blade surface or its smooth areas can also be less than 0.2 micrometers. Alternatively, the arithmetic mean roughness (Ra) of the blade surface or its smooth areas can be less than 0.17 micrometers.

[0127] This invention provides a camera module comprising a lens group and the aforementioned aperture module. The lens group is disposed on its central axis corresponding to the aperture of the aperture module. The aperture can be the aperture of the camera module.

[0128] The present invention provides an electronic device comprising the aforementioned camera module.

[0129] All the technical features in the light-transmitting hole module of the present invention can be combined and configured to achieve the corresponding effects.

[0130] Based on the above implementation methods, specific embodiments are presented below and described in detail with reference to the accompanying drawings.

[0131] <First Embodiment>

[0132] Please refer to Figures 1 to 6 ,in Figure 1 A perspective view of a camera module according to a first embodiment of the present invention is shown. Figure 2 Draw Figure 1 An exploded view of the camera module. Figure 3 Draw Figure 1A cross-sectional diagram of the aperture module and lens group of the camera module. Figure 4 Draw Figure 1 An exploded view of the aperture module of the camera module. Figure 5 Draw Figure 4 An exploded view of the camera module's cover element, base, and rotating element. Figure 6 Draw Figure 4 An exploded view of the rotating element, base, and driving magnet of the camera module.

[0133] Camera module 1 includes an imaging lens 10 and a lens carrier 20. The lens carrier 20 mounts the imaging lens 10 so that the imaging lens 10 can be used in an electronic device (not shown in this embodiment). The lens carrier 20 may further provide functions such as focusing and image stabilization, but the present invention is not limited thereto. The imaging lens 10 includes a light-transmitting aperture module 110 and a lens group 120, and the light-transmitting aperture module 110 includes a blade group 111 and a cover element 112 in sequence along the central axis CA.

[0134] The blade assembly 111 includes multiple blades 111a and 111b. These blades 111a and 111b surround the light-transmitting aperture 100 of the light-transmitting aperture module 110, and the light-transmitting aperture 100 is variable in size about the central axis CA. A cover element 112 covers the top of the blade assembly 111. The cover element 112 has a through-hole 112a, which is correspondingly arranged with respect to the light-transmitting aperture 100. The lens assembly 120 is used to change the optical path and may include one or more lenses, which are positioned at specific locations on the optical axis. The lens assembly 120 may further include a lens barrel for accommodating the lenses. The lens assembly 120 is correspondingly arranged with respect to the light-transmitting aperture 100 of the light-transmitting aperture module 110 on the central axis CA, and more specifically, the optical axis of the lens assembly 120 substantially overlaps with the central axis CA of the light-transmitting aperture module 110. The light-transmitting aperture 100 of the light-transmitting aperture module 110 can serve as the aperture of the camera module 1, and an electronic photosensitive element can be provided on the imaging surface of the lens group 120 to capture images.

[0135] The light-transmitting hole module 110 further includes a base 113, a rotating element 114, a driving assembly 115, a ferromagnetic element 116, and a rolling element 117.

[0136] The base 113 is fixed relative to the cover element 112. Specifically, the base 113 includes a first component 113a and a second component 113b assembled together. The first component 113a includes a plurality of positioning structures 1131 located on its top surface, and the cover element 112 has a plurality of corresponding holes 1120 corresponding to these positioning structures 1131. The positioning structures 1131 cooperate with the corresponding holes 1120 to fix the cover element 112 to the first component 113a. The first component 113a of the base 113 has a bearing surface 1132, and blades 111a and 111b are disposed on the bearing surface 1132. The base 113 also includes a plurality of first shaft structures 113c formed in the first component 113a.

[0137] A rotating element 114 is disposed between the first component 113a and the second component 113b of the base 113, and the rotating element 114 is rotatable about the central axis CA. The rotating element 114 also includes a plurality of second shaft structures 114a.

[0138] The drive assembly 115 includes a drive magnet 115a, a drive coil 115b, and an electronic component 115c. The drive magnet 115a is disposed on the rotating element 114, and the drive coil 115b is disposed opposite to the drive magnet 115a to drive the rotating element 114 to rotate.

[0139] A ferromagnetic element 116 is disposed on the second component 113b of the base 113, and the ferromagnetic element 116 is disposed opposite to the driving magnet 115a. The ferromagnetic element 116 is located further away from the cover element 112 than the rotating element 114, so as to maintain the relative position of the rotating element 114 and the cover element 112.

[0140] Multiple rolling elements 117 are disposed between the second component 113b of the base 113 and the rotating element 114, so that the rotating element 114 is rotatable. Specifically, the rolling elements 117 can guide the rotating element 114 to rotate about the central axis CA. Each rolling element 117 can be a sphere, cylinder, cone, etc., but the present invention is not limited thereto.

[0141] Please refer to further details. Figures 7 to 9 ,in Figure 7 Draw Figure 4 A top view schematic diagram of the cover element of the camera module. Figure 8 Draw Figure 4 A top view of one of the movable blades of the camera module, and Figure 9 Draw Figure 4 An exploded view of the camera module's cover element and blade assembly.

[0142] The cover element 112 includes a lowered surface structure 112b and a secondary lowered surface structure 112c. Please refer to both. Figures 10 to 12 ,in Figure 10Draw Figure 4 A side view of the camera module after assembly of the cover element, blade group, base and rotating element. Figure 11 Draw Figure 10 A partially enlarged schematic diagram of the cover element and blade assembly. Figure 12 Draw Figure 10 Another enlarged schematic diagram of the cover element and blade assembly.

[0143] The lowered surface structure 112b of the cover element 112 is correspondingly disposed with one or more blades 111a, and the lowered surface structure 112b is closer to the one or more blades 111a than the through hole 112a. Furthermore, the secondary lowered surface structure 112c of the cover element 112 is correspondingly disposed with one or more blades 111b, and the secondary lowered surface structure 112c is closer to the one or more blades 111b than the through hole 112a. Specifically, the cover element 112 can be a stamped part made of metal or plastic, and each lowered surface structure 112b and each secondary lowered surface structure 112c is a protruding bulge extending towards the blade 111a formed on the cover element 112 by a stamping process. The length of the bulge in the central axis CA direction can be defined as the depth of the lowered surface structure 112b or the secondary lowered surface structure 112c. On a virtual reference plane (not shown) of the vertical central axis CA, the projected area of ​​the descending surface structure 112b is smaller than the projected area of ​​a single blade 111a, and the projected area of ​​the secondary descending surface structure 112c is smaller than the projected area of ​​a single blade 111b.

[0144] This embodiment exemplarily describes a cover element 112 with a lowered surface structure 112b and a secondary lowered surface structure 112c of different depths, but the present invention is not limited thereto. In some embodiments, the cover element may have lowered surface structures of uniform depth.

[0145] The bearing surface 1132 of the first component 113a of the base 113 is farther away from the descending surface structure 112b than the blade 111a, so that the blade 111a is located between the bearing surface 1132 and the descending surface structure 112b. Similarly, the bearing surface 1132 is farther away from the secondary descending surface structure 112c than the blade 111b, so that the blade 111b is located between the bearing surface 1132 and the secondary descending surface structure 112c.

[0146] In the direction parallel to the central axis CA, the secondary descending surface structure 112c is closer to the through hole 112a of the cover element 112 than the descending surface structure 112b. That is, in the direction parallel to the central axis CA, the gap between the blade 111a and the corresponding descending surface structure 112b is smaller than the gap between the blade 111b and the corresponding secondary descending surface structure 112c.

[0147] Each descending surface structure 112b (or secondary descending surface structure 112c) includes a first corresponding hole 1121, and the first corresponding hole 1121 is disposed opposite to one of the first shaft structures 113c of the base 113. Each descending surface structure 112b (or secondary descending surface structure 112c) also includes a second corresponding hole 1122, and the second corresponding hole 1122 is disposed opposite to one of the second shaft structures 114a of the rotating element 114.

[0148] Furthermore, each blade 111a, 111b includes a first drive hole 1111. The first drive hole 1111 corresponds to a first corresponding hole 1121, and the first shaft structure 113c passes through the first drive hole 1111. The blades 111a, 111b are movable within a certain range according to the first shaft structure 113c to control the size of the light-transmitting hole 100 of the light-transmitting hole module 110. Further, each blade 111a, 111b also includes a second drive hole 1112. The second drive hole 1112 corresponds to a second corresponding hole 1122, and the second shaft structure 114a passes through the second drive hole 1112. The blades 111a, 111b are linked to the second shaft structure 114a to change the size of the light-transmitting hole 100.

[0149] The arithmetic mean roughness (Ra) of the surface 1110 of the descending surface structure 112b facing the blade 111a is less than 0.25 micrometers, and the arithmetic mean roughness (Ra) of the surface 1110 of the sub-descending surface structure 112c facing the blade 111b is less than 0.25 micrometers.

[0150] The arithmetic mean roughness (Ra) of the surface of blade 111a facing the descending surface structure 112b (i.e., the upper surface of blade 111a) is less than 0.25 micrometers, and the arithmetic mean roughness (Ra) of the surface of blade 111b facing the sub-descending surface structure 112c (i.e., the upper surface of blade 111b) is less than 0.25 micrometers. More specifically, refer to... Figure 8 The blades 111a and 111b have a smooth surface 1113 and a rough surface 1114, wherein the smooth surface 1113 is the surface of the aforementioned blades 111a and 111b, and its surface faces the descending surface structure 112b or the sub-descending surface structure 112c, and the arithmetic mean roughness (Ra) of the smooth surface 1113 is less than 0.25 micrometers.

[0151] In the direction parallel to the central axis CA, the gap thickness between the descending surface structure 112b and the blade 111a is Gap1, and the thickness of the blade 111a is Thi, which satisfies the following conditions: Gap1 = 0.018 mm; Thi = 0.03 mm; and Gap1 / Thi = 0.6.

[0152] In the direction parallel to the central axis CA, the gap thickness between the secondary descending surface structure 112c and the blade 111b is Gap2, and the thickness of the blade 111b is Thi, which satisfies the following conditions: Gap2 = 0.015 mm; Thi = 0.03 mm; and Gap2 / Thi = 0.5.

[0153] In the direction parallel to the central axis CA, the distance between the descending surface structure 112b and the bearing surface 1132 is Dis1, and the thickness of the blade 111a is Thi, which satisfies the following conditions: Dis1 = 0.05 mm; and Dis1 / Thi = 1.67.

[0154] In the direction parallel to the central axis CA, the distance between the secondary descending surface structure 112c and the bearing surface 1132 is Dis2, and the thickness of the blade 111a is Thi, which satisfies the following conditions: Dis2 = 0.046 mm; and Dis2 / Thi = 1.53.

[0155] Reference Figures 4 to 6 Electronic component 115c includes a drive controller and a position sensing circuit. The drive controller is electrically connected to the drive coil 115b via circuit component 115d to control the drive coil 115b to generate an appropriate magnetic field. The position sensing circuit is positioned opposite the drive magnet 115a to sense the position of the rotating element 114. The position sensing circuit is electrically connected to the drive controller 1151 to achieve feedback control, thereby ensuring that the aperture module 110 is adjusted to the required aperture size.

[0156] The electrical connection relationship and feedback control between the electronic component 115c and the drive coil 115b in this embodiment can be referred to... Figures 25 to 27 . Figure 25 A schematic diagram illustrating the electrical connections of a drive controller, a position sensor, and a drive coil according to an embodiment of the present invention is shown. The electronic component 115c may include a drive controller DCU and a position sensor PSU, which are two independent components connected to a power supply VCC and grounded to GND. The drive controller DCU is electrically connected to the drive coil CL to control the drive coil CL to generate an appropriate magnetic field, wherein one end of each drive coil CL is grounded to GND. The position sensor PSU has a position sensing circuit PSC to obtain the position of the rotating element and the drive magnet in the direction surrounding the light-transmitting aperture, and the position sensor PSU is electrically connected to the drive controller DCU to generate a signal based on the sensed position information and transmit it to the drive controller DCU. Figure 26A schematic diagram illustrating the electrical connection of a drive controller and a drive coil according to an embodiment of the present invention is shown, wherein the electronic component 115c may be a drive controller DCU with a built-in position sensing circuit PSC, and the drive controller DCU and the position sensing circuit PSC are connected to the power supply VCC and grounded to GND. The drive controller DCU is electrically connected to the drive coil CL to control the drive coil CL to generate an appropriate magnetic field, wherein one end of each drive coil CL is grounded to GND. The position sensing circuit PSC of the drive controller DCU is used to obtain the position of the rotating element and the magnet in the direction surrounding the light-transmitting aperture. Figure 27 Draw Figure 25 or Figure 26 The block diagram shows the feedback control system of the drive controller, drive coil, and position sensing circuit. Using a closed-loop feedback control system, the position of the drive magnet located on the rotating element is sensed by the position sensing circuit PSC and fed back to the drive controller DCU. The drive controller DCU can then correct the magnetic field generated by the drive coil CL, thereby adjusting the position of the rotating element.

[0157] For an example of varying the size of the light-transmitting aperture 100 using the above structure, please refer to... Figures 13 to 14 ,in Figure 13 A partial top view schematic diagram of the camera module according to the first embodiment of the present invention when the aperture module is in a large aperture state is shown, and Figure 14 A partial top view schematic diagram of the aperture module of the camera module according to the first embodiment of the present invention when it is in a small aperture state is shown. In this embodiment, by adjusting the size of the aperture 100 by the driving component 115, the aperture module 110 can have different aperture states, thereby the camera module 1 can have different aperture values ​​(F-number).

[0158] like Figure 4 and Figure 13 As shown, when it is necessary to enlarge the light-transmitting aperture 100, the driving magnet 115a and the driving coil 115b of the driving assembly 115 jointly drive the rotating element 114 to rotate. This, in turn, causes the second shaft structure 114a of the rotating element 114 to drive the blades 111a and 111b to rotate about the first shaft structure 113c, thereby enlarging the size of the light-transmitting aperture 100. Conversely, as... Figure 4 and Figure 14 As shown, when the light-transmitting aperture 100 is to be reduced, the driving magnet 115a and the driving coil 115b of the driving assembly 115 jointly drive the rotating element 114 to rotate in the opposite direction, and drive the blades 111a and 111b to rotate in the opposite direction with the first shaft structure 113c as the axis through the second shaft structure 114a of the rotating element 114, thereby reducing the size of the light-transmitting aperture 100.

[0159] <Second Embodiment>

[0160] Please refer to Figures 15 to 17 ,in Figure 15 An exploded view of the light-transmitting hole module according to a second embodiment of the present invention is shown. Figure 16 Draw Figure 15 A top view schematic diagram of the cover element of the light-transmitting hole module, and Figure 17 Draw Figure 15 An exploded view of the cover element and blade assembly of the light-transmitting hole module. Compared with the light-transmitting hole module 110 of the first embodiment, the main differences of the light-transmitting hole module 110' in this embodiment are the lowering surface structure of the cover element and the positioning structure of the base. The following description only focuses on the differences.

[0161] The cover element 112' of the light-transmitting hole module 110' includes a downwardly extending foot 112d, and the foot 112d has a corresponding hole 1120'. The base 113' includes a plurality of positioning structures 1131' located on its surface. The positioning structures 1131' engage with the corresponding holes 1120' to fix the cover element 112' to the base 113'. The positioning structures 1131' and the corresponding holes 1120' engage with each other by a snap-fit ​​mechanism, thereby improving the fixation of the cover element 112' and the base 113'.

[0162] Furthermore, the cover element 112' also includes a lowered surface structure 112b', and the lowered surface structure 112b' has a first corresponding hole 1121' and a second corresponding hole 1122'. Unlike the lowered surface structure 112b (or the secondary lowered surface structure 112c) of the first embodiment, which has a first corresponding hole 1121 and a second corresponding hole 1122 that are spatially connected, the first corresponding hole 1121' and the second corresponding hole 1122' of this embodiment are two spatially independent through holes.

[0163] <Third Embodiment>

[0164] Please refer to Figure 18 and Figure 19 ,in Figure 18 An exploded view of the light-transmitting hole module according to a third embodiment of the present invention is shown, and Figure 19 Draw Figure 18 An exploded view of the cover element and blade assembly of the light-transmitting hole module. Compared with the light-transmitting hole module 110 of the first embodiment, the main difference of the light-transmitting hole module 110 of this embodiment lies in the fixing method of the cover element and the base. The following description only focuses on the differences.

[0165] The cover element 112” of the light-transmitting hole module 110” also includes a side portion 112e. Unlike the first embodiment, where the cover element 112 and the base 113 are fixed to each other by engaging with the positioning structure 1131 through the corresponding hole 1120, in this embodiment, the cover element 112” is fitted onto the base 113 with the side portion 112e, and the cover element 112” can be fixed to the base 113 by shape matching, gluing or other methods.

[0166] <Fourth Embodiment>

[0167] Please refer to Figures 20 to 22 ,in Figure 20 A perspective schematic diagram of an electronic device according to a fourth embodiment of the present invention is shown. Figure 21 Draw Figure 20 A three-dimensional diagram of the other side of the electronic device, and Figure 22 Draw Figure 20 System block diagram of an electronic device.

[0168] In this embodiment, electronic device 2 is a mobile device, which can be a computer, smartphone, smart wearable device, drone, or vehicle image recording and display instrument, etc., and the present invention is not limited thereto. Electronic device 2 includes camera module 1a, wide-angle camera module 1b, macro camera module 1c, camera module 1d, time-of-flight (ToF) camera module 1e, flash module 3, focus assist module 4, image signal processor, display device 5, image software processor, and biometric sensor 6. Camera module 1a is, for example, camera module 1 of the first embodiment, but the present invention is not limited thereto. Camera modules 1b, 1c, 1d, and 1e can also be, for example, camera modules of other embodiments of the present invention described above.

[0169] Camera modules 1a, 1b, and 1c are all located on the same side of the electronic device 2. Camera module 1d, time-of-flight ranging camera module 1e, and display device 5 are all located on the other side of the electronic device 2, and the display device 5 can be a user interface so that camera modules 1d and 1e can be used as front-facing lenses to provide selfie functionality, but the present invention is not limited thereto.

[0170] In this embodiment, camera modules 1a, 1b, and 1c have different viewing angles, allowing the electronic device 2 to provide different magnifications to achieve optical zoom shooting effects. For example, the wide-angle camera module 1b has a wider maximum viewing angle, and the image it captures includes the entire church, surrounding buildings, and people in the square, such as... Figure 21 As shown.

[0171] The image captured by the aperture module of camera module 1a at a large aperture value can be referenced. Figure 23 The images captured at smaller aperture values ​​can be referenced. Figure 24 . Figure 23 Draw Figure 20 A schematic diagram of an image captured by an electronic device using a light-transmitting aperture module at a small aperture. Figure 24 Draw Figure 20The electronic device is illustrated in the diagram of an image captured by the aperture module at a large aperture, where the captured image includes a flock of birds flying in front of a church. A small aperture (e.g., f / 5.6) provides a smaller aperture, allowing less light to reach the electronic sensor, but resulting in a clearer background. A large aperture (e.g., f / 1.4) provides a larger aperture, allowing more light to reach the electronic sensor, but resulting in a less clear background. During image capture, the aperture module of camera module 1a can further perform optical zoom on the subject to obtain a clearer image. Additionally, the time-of-flight ranging camera module 1e can acquire depth information from the image. The electronic device 2 described above includes multiple camera modules 1a, 1b, 1c, 1d, and 1e, but the number and configuration of the camera modules are not intended to limit the invention.

[0172] When the user photographs the subject OBJ, the electronic device 2 uses camera module 1a, camera module 1b, or camera module 1c to focus the light and capture the image. It then activates the flash module 3 for supplemental lighting and uses the subject distance information provided by the focus assist module 4 to quickly focus. Furthermore, the image signal processor performs image optimization processing to further improve the image quality produced by the lens group. The focus assist module 4 can employ an infrared or laser focus assist system to achieve rapid focusing.

[0173] In addition, the electronic device 2 can also take pictures using camera module 1d or camera module 1e. When camera module 1d or camera module 1e is taking pictures, an indicator light 7 can illuminate to remind the user that the electronic device 2 is taking pictures. The display device 5 can use a touch screen or a physical shooting button with zoom control key 51 and focus / shooting button 52, and can perform image shooting and image processing in conjunction with the diverse functions of the image software processor. The image processed by the image software processor can be displayed on the display device 5. The user can also replay previously captured images using the image playback button 53 on the display device 5, select a suitable camera module for shooting using the camera module switching button 54, and adjust the shooting conditions for the current shooting scene using the integrated menu button 55.

[0174] Furthermore, the electronic device 2 also includes a circuit board 8, and the circuit board 8 carries multiple electronic components 9. Camera modules 1a, 1b, 1c, 1d, and 1e are electrically connected to the electronic components 9 via connectors 81 on the circuit board 8. These electronic components 9 may include signal transmission modules, which can transmit images to other electronic devices or cloud storage. The signal transmission modules may be Wireless Fidelity (WiFi) modules, Bluetooth modules, infrared modules, network service modules, or integrated modules of multiple signal transmission methods, and the present invention is not limited thereto.

[0175] These electronic components 9 may include image signal processors and image software processors, as well as positioners, signal transmitters, and gyroscopes to facilitate navigation or positioning of the electronic device 2. They may also include storage units and random access memory to store image signals. In this embodiment, the electronic components 9 may be integrated into a single-chip system 91, but the invention is not limited to this configuration. In some other embodiments, the electronic components may be integrated into a camera module or disposed on one of multiple circuit boards. Furthermore, the biometric sensor 6 provides functions such as powering on and unlocking the electronic device 2.

[0176] The camera module of this invention is not limited to applications in smartphones. It can also be applied to mobile focusing systems as needed, offering excellent aberration correction and good image quality. For example, the camera module can be used in various electronic devices such as 3D image capture, digital cameras, mobile devices, tablet computers, smart TVs, network monitoring equipment, dashcams, reversing cameras, multi-lens devices, recognition systems, motion-sensing game consoles, and wearable devices. The aforementioned electronic devices are merely illustrative examples of practical applications of this invention and do not limit the scope of application of the camera module.

[0177] While the present invention has been disclosed above with reference to the foregoing embodiments, these embodiments are not intended to limit the invention. Any modifications and refinements made without departing from the spirit and scope of the invention are within the scope of patent protection of the present invention. Please refer to the claims for the defined scope of protection of the present invention.

Claims

1. A through hole module characterized by, Sequentially included along a central axis: A blade assembly comprising multiple blades, the blades forming a light-transmitting aperture, the light-transmitting aperture being variable in size about the central axis; and A cover element covers the blade assembly, the cover element having a through hole, and the through hole being arranged corresponding to the light-transmitting hole; The cover element includes a lowered surface structure, which is correspondingly disposed to one of the blades, and the lowered surface structure is closer to one of the blades than the through hole; Wherein, in the direction parallel to the central axis, the gap thickness between the descending surface structure and one of the blades is Gap, and the thickness of one of the blades is Thi, which satisfies the following condition: 0.001 ≤ Gap / Thi ≤ 0.

995.

2. The light-transmitting aperture module according to claim 1, characterized in that, The cover element also includes a primary descending surface structure, and the primary descending surface structure is configured to correspond to the other of the blades; In the direction parallel to the central axis, the secondary lower surface structure is closer to the through hole of the cover element than the lower surface structure.

3. The light-transmitting hole module according to claim 1, characterized in that, The cover element is a stamped part.

4. The light-transmitting aperture module according to claim 1, characterized in that, It also includes a base portion, which is fixed relative to the cover element; The base includes a first shaft structure, and one of the blades is movable within a certain range according to the first shaft structure to control the size of the light-transmitting aperture.

5. The light-transmitting hole module according to claim 4, characterized in that, The base includes a bearing surface, the bearing surface being farther away from the descending surface structure than one of the blades, and one of the blades is disposed on the bearing surface; Wherein, in the direction parallel to the central axis, the distance between the descending surface structure and the bearing surface is Dis, and the thickness of one of the blades is Thi, satisfying the following conditions: 1.001 ≤ Dis / Thi ≤ 1.

995.

6. The light-transmitting aperture module according to claim 4, characterized in that, The lowered surface structure of the cover element includes a corresponding hole, and the corresponding hole is disposed opposite to the first shaft structure.

7. The light-transmitting hole module according to claim 6, characterized in that, One of the blades includes a drive hole corresponding to the corresponding hole, and the first shaft structure passes through the drive hole.

8. The light-transmitting hole module according to claim 4, characterized in that, It also includes a rotating element, and the rotating element rotates about the central axis; The rotating element includes a second shaft structure, and one of the blades is linked to the second shaft structure to change the size of the light-transmitting hole.

9. The light-transmitting hole module according to claim 8, characterized in that, The lowered surface structure of the cover element includes a corresponding hole, and the corresponding hole is disposed opposite to the second shaft structure.

10. The light-transmitting aperture module according to claim 9, characterized in that, One of the blades includes a drive hole corresponding to the corresponding hole, and the second shaft structure passes through the drive hole.

11. The light-transmitting aperture module according to claim 8, characterized in that, It also includes a driving magnet and a driving coil, wherein the driving magnet is disposed on the rotating element, and the driving coil is disposed opposite to the driving magnet to drive the rotating element to rotate.

12. The light-transmitting aperture module according to claim 11, characterized in that, It also includes a position sensing circuit, wherein the position sensing circuit is disposed opposite to the driving magnet to sense the position of the rotating element.

13. The light-transmitting aperture module according to claim 11, characterized in that, It also includes a ferromagnetic element, which is disposed on the base and opposite to the driving magnet; The ferromagnetic element is located further away from the cover element than the rotating element in order to maintain the relative position of the rotating element and the cover element.

14. The light-transmitting aperture module according to claim 8, characterized in that, It also includes a plurality of rolling elements, wherein the rolling elements are disposed between the base and the rotating element so that the rotating element is rotatable.

15. The light-transmitting aperture module according to claim 1, characterized in that, On a plane perpendicular to the central axis, the projected area of ​​the descending surface structure is smaller than the projected area of ​​one of the blades.

16. The light-transmitting aperture module according to claim 1, characterized in that, One surface of the lower surface structure of the cover element faces one of the blades, and the arithmetic mean roughness of the surface is less than 0.25 micrometers.

17. The light-transmitting aperture module according to claim 1, characterized in that, One of the blades has a smooth surface facing the descending surface structure, and the arithmetic mean roughness of the smooth surface is less than 0.25 micrometers.

18. A camera module, characterized in that, Include: The light-transmitting aperture module according to claim 1; and A lens group is arranged on the central axis corresponding to the light-transmitting hole.

19. The camera module according to claim 18, characterized in that, The light-transmitting hole is the aperture of the camera module.

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

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