Optical element driving mechanism
By designing an optical element driving mechanism, utilizing the driving of the moving part in opposite directions and magnetic elements, a miniaturized optical anti-shake function is achieved, solving the image blurring problem caused by lens module shaking and improving the optical performance of electronic devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AITE TECHNOLOGY CO LTD
- Filing Date
- 2022-02-18
- Publication Date
- 2026-07-03
AI Technical Summary
The lens modules of existing electronic devices are prone to image blurring due to shaking during use, and it is difficult to achieve excellent optical image stabilization while pursuing miniaturization.
Design an optical element driving mechanism that achieves optical focusing and optical shake compensation functions by driving the first and second moving parts in opposite directions, combined with magnetic elements and coils. Utilize sensing and control components for closed-loop control to limit the range of motion, reduce device size, and improve anti-shake capability.
Achieving a larger anti-shake angle and a wider focusing range in a smaller size improves the optical focusing and shake compensation capabilities of the electronic devices, thereby enhancing image quality.
Smart Images
Figure CN115016193B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to an optical element driving mechanism, and more particularly to an optical element driving mechanism with a driving component, thereby achieving functions such as optical focusing or optical shakiness compensation. Background Technology
[0002] With the development of technology, many electronic devices today (such as tablets or smartphones) are equipped with lens modules, enabling them to take photos or record videos. When users use electronic devices with lens modules, shaking may occur, resulting in blurry images captured by the lens module. However, people's demands for image quality are increasing, making excellent image stabilization capabilities of lens modules increasingly important. Furthermore, modern consumers' pursuit of product miniaturization makes the design of a small yet highly effective optical image stabilization mechanism a crucial issue. Summary of the Invention
[0003] The purpose of this invention is to provide an optical element driving mechanism to solve at least one of the above-mentioned problems.
[0004] This invention provides an optical element driving mechanism, which includes a first movable part, a fixed part, a first driving assembly, and a first supporting assembly. The first movable part is used to connect to a first optical element. The first movable part is movable relative to the fixed part. The first driving assembly is used to drive the first movable part to move relative to the fixed part. The first movable part can move relative to the fixed part via the first supporting assembly. The first movable part can move relative to the fixed part within a first limit range in a first dimension.
[0005] According to some embodiments of this disclosure, the optical element driving mechanism further includes a first limiting element, a first sensing component, and a first control component. The first limiting element limits the movement range of the first movable part to no more than a first limit range. The first sensing component senses the movement of the first movable part. The first control component outputs a first driving signal to the first driving component. The first sensing component outputs a first sensing signal. An external device measures and records first preset information. The first preset information includes the position of the first movable part corresponding to the first sensing signal within a first recording range, and the first recording range is greater than the first limit range. The first control component outputs the first driving signal based on the first sensing signal and the first preset information.
[0006] According to some embodiments of this disclosure, the optical element driving mechanism further includes a second movable part and a second driving assembly. The second movable part is used to connect to a second optical element. The second movable part is movable relative to a first movable part. The second driving assembly is used to drive the second movable part to move relative to a fixed part. The second movable part is movable relative to the fixed part in a second dimension within a second limit range. A first sensing assembly is used to sense the movement of the first movable part relative to the second movable part.
[0007] According to some embodiments of this disclosure, the first sensing component includes a reference element or a first sensing element. The reference element or the first sensing element is fixedly disposed on the second movable portion.
[0008] According to some embodiments of this disclosure, the optical element driving mechanism further includes a second support assembly. The second movable portion is movable relative to the fixed portion via the second support assembly. The length of the first support assembly is different from the length of the second support assembly.
[0009] According to some embodiments of this disclosure, the optical element driving mechanism further includes a second limiting element, a second sensing component, and a second control component. The second limiting element limits the range of motion of the second movable part to no more than a second limit range. The second sensing component senses the motion of the second movable part. The second control component outputs a second driving signal to the second driving component. The second sensing component outputs a second sensing signal. An external device measures and records second preset information. The second preset information includes the position of the second movable part corresponding to the second sensing signal within a second recording range. The second recording range is less than or equal to the second limit range. The second control component outputs the second driving signal based on the second sensing signal and the second preset information.
[0010] According to some embodiments of this disclosure, the first dimension is movement along a first axis. The second dimension is movement along the first axis. The first limit range differs from the second limit range. The first sensing component and the second sensing component are located on different sides relative to the second movable part.
[0011] According to some embodiments of this disclosure, when viewed along any direction perpendicular to the first optical axis, the first sensing component and the second sensing component are located on opposite sides relative to the second active part.
[0012] According to some embodiments of this disclosure, after receiving a first indication signal output by the processing unit, the first control component outputs a first drive signal. After receiving a second indication signal output by the processing unit, the second control component outputs a second drive signal. The processing unit is located outside the optical element driving mechanism.
[0013] According to some embodiments of this disclosure, the first control component and the second control component simultaneously output a first drive signal and a second drive signal to the first drive component and the second drive component, respectively.
[0014] According to some embodiments of this disclosure, the optical element driving mechanism further includes a third driving assembly and a third movable part. The third driving assembly is used to drive the third movable part to move relative to the fixed part in a third dimension. The third dimension is the movement in the direction of the second optical axis.
[0015] According to some embodiments of this disclosure, the first driving assembly includes a first magnetic element and a first coil. The first coil corresponds to the first magnetic element.
[0016] According to some embodiments of this disclosure, the second driving assembly includes a second magnetic element and a second coil. The second coil corresponds to the second magnetic element.
[0017] According to some embodiments of this disclosure, when viewed along a first optical axis, the first coil and the second coil at least partially overlap.
[0018] According to some embodiments of this disclosure, the third driving assembly includes a third magnetic element and a third coil. The third coil corresponds to the third magnetic element.
[0019] According to some embodiments of this disclosure, the optical element driving mechanism further includes a magnetically conductive element and a first circuit assembly. The magnetically conductive element has a magnetically conductive material and is embedded in the first circuit assembly.
[0020] According to some embodiments of this disclosure, when viewed along the first optical axis, the magnetically conductive element overlaps with the first coil.
[0021] According to some embodiments of this disclosure, the fixing part includes a frame. The frame accommodates a first movable part and a second movable part. When viewed along a first optical axis, the first movable part at least partially overlaps with the frame.
[0022] According to some embodiments of this disclosure, the optical element driving mechanism further includes a plurality of buffer elements. The buffer elements are disposed between the first movable part and the frame, on the second coil, and on the third coil.
[0023] According to some embodiments of this disclosure, the optical element driving mechanism further includes a second circuit assembly. A second coil is fixedly disposed on the second circuit assembly. The fixing part also includes a housing, which is fixedly connected to the frame. When viewed along a direction perpendicular to the first optical axis, the second circuit assembly is disposed between the housing and the frame.
[0024] The beneficial effects of this invention are that it provides an optical element driving mechanism for driving a first optical element and a second optical element, thereby achieving functions such as optical focusing or optical shake compensation. By driving the first and second movable parts in opposite directions, the optical element driving mechanism can achieve a larger anti-shake angle or a wider focusing range with a smaller size, thus possessing superior optical focusing and optical compensation capabilities and significantly improving the performance of electronic devices. Attached Figure Description
[0025] This disclosure will become clear from the following detailed description and accompanying illustrations. It should be emphasized that, in accordance with industry standard practice, the features are not drawn to scale and are for illustrative purposes only. In fact, the dimensions of the features may be arbitrarily enlarged or reduced for clarity.
[0026] Figure 1 This is an exploded view of an optical element drive mechanism according to certain features of this disclosure.
[0027] Figure 2 This is an exploded view of the first drive assembly, the second drive assembly, the third drive assembly, and the magnetically conductive element according to certain features of this disclosure.
[0028] Figure 3 This is a cross-sectional schematic diagram of an optical element drive mechanism according to certain features of this disclosure.
[0029] Figure 4 for Figure 3 The diagram shows the fixed part, the first movable part, and the second movable part in their initial positions.
[0030] Figure 5A for Figure 4 A schematic diagram showing the fixed part, the first movable part, and the second movable part moving to their extreme positions.
[0031] Figure 5B for Figure 4 A schematic diagram showing the fixed part, the first movable part, and the second movable part moving to another extreme position.
[0032] Figure 6A This is a block diagram of a first control assembly and external device disposed outside the optical element drive mechanism, according to certain features of this disclosure.
[0033] Figure 6B This is a block diagram of a second control assembly and external device disposed outside the optical element drive mechanism, according to certain features of this disclosure.
[0034] Figure 6C This is a flowchart of measuring first preset information using an external device based on certain features of this disclosure.
[0035] Figure 7A This is a block diagram of a processing unit connected to a first control component, according to certain features of this disclosure.
[0036] Figure 7B This is a flowchart of closed-loop control of an optical element drive mechanism according to certain features of this disclosure.
[0037] Figure 8This is a cross-sectional view of a modified example of an optical element drive mechanism according to certain features of the present disclosure.
[0038] Figure 9 This is a cross-sectional view of another variation of the optical element drive mechanism according to certain features of this disclosure.
[0039] Figure 10 This is a cross-sectional view of another variation of the optical element drive mechanism according to certain features of this disclosure.
[0040] Figure 11 This is a cross-sectional view of another variation of the optical element drive mechanism according to certain features of this disclosure.
[0041] Figure 12 This is a cross-sectional view of another variation of the optical element drive mechanism according to certain features of this disclosure.
[0042] Figure 13 This is a cross-sectional view of another variation of the optical element drive mechanism according to certain features of this disclosure.
[0043] The attached figures are labeled as follows:
[0044] 1: First optical element
[0045] 2: Second optical element
[0046] 3,3': External devices
[0047] 4: Processing Unit
[0048] 10, 10A, 10B, 10C, 10D, 10E, 10F: Optical element drive mechanism
[0049] 11: Filter
[0050] 100: Fixing part
[0051] 110: Outer shell
[0052] 120: Frame
[0053] 120F: Inner frame
[0054] 125: Second limiting element
[0055] 130: Base
[0056] 200: First Activities Department
[0057] 300: Second Activities Department
[0058] 400: Third Activities Department
[0059] 510: First elastic element
[0060] 520: Second elastic element
[0061] 610, 610B, 610C, 610D, 610E: First support components
[0062] 620, 620D, 620E: Second support assembly
[0063] 630F: Third Support Component
[0064] 710: First circuit component
[0065] 712, 722: Upper Part
[0066] 714, 724: Lower Part
[0067] 720: Second Circuit Component
[0068] 802, 802A, 802C, 802E: Magnetic components
[0069] 810, 810A, 810E: First drive component
[0070] 812, 812A, 812E: First coil
[0071] 820: Second drive component
[0072] 822: Second coil
[0073] 830: Third drive component
[0074] 832: Third coil
[0075] 840, 840A, 840C, 840E: Magnetic conductive elements
[0076] 910: First limiting element
[0077] 1010: First sensing component
[0078] 1012: First sensing element
[0079] 1020: Second sensing component
[0080] 1022: Second sensing element
[0081] 1030: Third sensing component
[0082] 1032: Third sensing element
[0083] 1110: First control component
[0084] 1120: Second control component
[0085] 1200, 1200A, 1200B, 1200C: Buffer elements
[0086] 2000, 3000: Flowchart
[0087] 2100, 2200, 2300, 3100, 3200, 3300, 3400: Steps
[0088] D1: First Axis
[0089] D2: Second axis
[0090] D3: Third Axis
[0091] L1, L2: Distance
[0092] O1: First optical axis
[0093] O2: Second optical axis Detailed Implementation
[0094] To make the objectives, features, and advantages of this disclosure more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. The configuration of the elements in the embodiments is for illustrative purposes only and is not intended to limit the scope of this disclosure. Furthermore, the repetition of some reference numerals in the accompanying drawings is for simplification and does not imply any correlation between different embodiments. The directional terms used in the following embodiments, such as up, down, left, right, front, or back, are merely for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this disclosure.
[0095] Furthermore, relative terms such as "lower" or "bottom" and "higher" or "top" may be used in the embodiments to describe the relative relationship of one element to another. It is understood that if the illustrated device is flipped upside down, the element described as being on the "lower" side will become the element on the "higher" side.
[0096] The following describes the optical element driving mechanism of an embodiment of the present invention. However, it will be readily apparent that the embodiments of the present invention provide many suitable inventive concepts and can be implemented in a wide range of specific contexts. The specific embodiments disclosed are merely illustrative of the use of the invention in a particular manner and are not intended to limit the scope of the invention. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the relevant art and the background or context of this disclosure, and should not be interpreted in an idealized or overly formal manner, unless specifically defined herein.
[0097] Figure 1An exploded view of an optical element drive mechanism 10 according to certain features of this disclosure is shown. The aforementioned optical element drive mechanism 10 can be disposed inside an electronic device such as a camera, tablet computer, or mobile phone to acquire images. The aforementioned optical element drive mechanism 10 can cause relative movement between a first optical element 1 and a second optical element 2 disposed therein to achieve auto-focusing (AF) and optical image stabilization (OIS).
[0098] The first optical element 1 and the second optical element 2 can be optical elements such as photosensitive elements, lenses, or mirrors. In this embodiment, the first optical element 1 can be a photosensitive element and may include a filter 11, and the second optical element 2 can be a lens, but this disclosure is not limited to this combination. The first optical element 1 has a first optical axis O1, and the second optical element 2 has a second optical axis O2. The detailed structure of the optical element driving mechanism 10 will be described below.
[0099] like Figure 1 As shown, the optical element driving mechanism 10 includes a fixed part 100, a first movable part 200, a second movable part 300, a third movable part 400, a first elastic element 510, a second elastic element 520, a first support assembly 610, a second support assembly 620, a first circuit assembly 710, a second circuit assembly 720, a first driving assembly 810, a second driving assembly 820, a third driving assembly 830, three magnetically conductive elements 840, a first limiting element 910, a first sensing assembly 1010, a second sensing assembly 1020, and a first control assembly 1110. Figure 6A ), and a second control component 1120 ( Figure 6B ) and multiple buffer elements 1200 ( Figure 3 ).
[0100] The fixing part 100 includes a housing 110, a frame 120, and a base 130. The housing 110 is fixedly connected to the frame 120. The frame 120 is fixedly connected to the base 130.
[0101] The first movable part 200 is a carrier for connecting the first optical element 1. The third movable part 400 is a carrier for connecting the second optical element 2. The third movable part 400 is movably connected to the second movable part 300 via the first elastic element 510 and the second elastic element 520.
[0102] The first movable part 200 can move relative to the fixed part 100 in a first dimension within a first limit range. The second movable part 300 can move relative to the fixed part 100 in a second dimension within a second limit range. The first limit range is different from the second limit range. The third movable part 400 can move relative to the fixed part 100 in a third dimension.
[0103] The first and second dimensions refer to motion in a plane formed by a first axis D1 and a second axis D2. The first axis D1, the second axis D2, and a third axis D3 are perpendicular to each other. The third axis D3 is approximately parallel to the first optical axis O1 and the second optical axis O2.
[0104] The first movable part 200 is movable relative to the fixed part 100 via the first support assembly 610. In this embodiment, the first support assembly 610 has four balls, which are respectively disposed at the four corners of the first movable part 200. The two ends of the first support assembly 610 contact the frame 120 and the first movable part 200, respectively.
[0105] The second movable part 300 can move relative to the fixed part 100 via the second support assembly 620. In this embodiment, the second support assembly 620 has four suspension lines, which are respectively disposed at the four corners of the second movable part 300. The two ends of the second support assembly 620 respectively contact the fixed part 100 and the second elastic element 520.
[0106] The first circuit assembly 710 includes an upper portion 712 and a lower portion 714. The first circuit assembly 710 is fixedly connected to the first movable portion 200 and is movable relative to the fixed portion 100 together with the first movable portion 200. The second circuit assembly 720 also includes an upper portion 722 and a lower portion 724. The second circuit assembly 720 is fixedly connected to the fixed portion 100 and is disposed between the housing 110 and the frame 120.
[0107] The first drive assembly 810 drives the first movable part 200 to move in the plane formed by the first axis D1 and the second axis D2, or to rotate relative to the fixed part 100 around the third axis D3, so as to achieve the function of anti-shake. The second drive assembly 820 drives the second movable part 300, together with the third movable part 400 and the second optical element 2, to move in the plane formed by the first axis D1 and the second axis D2, so as to achieve the function of anti-shake. The third drive assembly 830 drives the third movable part 400 to move in the direction of the second optical axis O2 to achieve the function of autofocus.
[0108] Please refer to this as well. Figures 1 to 2The first driving assembly 810 includes five first coils 812. The second driving assembly 820 includes three second coils 822. The third driving assembly 830 includes two third coils 832. It should be noted that in this embodiment, the first coils 812, second coils 822, and third coils 832 correspond to the same set of magnetic elements 802. That is, in this embodiment, the magnetic elements 802 serve as the first magnetic element of the first driving assembly 810, the second magnetic element of the second driving assembly 820, and the third magnetic element of the third driving assembly 830. This reduces the size of the optical element driving mechanism 10, achieving miniaturization.
[0109] Magnetic element 802 is disposed on the second movable part 300. First coil 812 is embedded in the upper part 712 of first circuit assembly 710. Second coil 822 is embedded in the lower part 724 of second circuit assembly 720. Third coil 832 is disposed on opposite sides of third movable part 400. When viewed along the first optical axis O1, the first coil 812 and the second coil 822 at least partially overlap.
[0110] A magnetically conductive element 840 is embedded within the first movable portion 200. The magnetically conductive element 840 is made of a magnetically conductive material. When viewed along the first optical axis O1, the magnetically conductive element 840 overlaps with the first coil 814.
[0111] Please refer to the reply. Figure 1 The first limiting element 910 is fixed to the frame 120. The first limiting element 910 is used to limit the range of motion of the first movable part 200 to not exceed the first limit range.
[0112] The first sensing component 1010 includes three first sensing elements 1012. The second sensing component 1020 includes two second sensing elements 1022. The third sensing component 1030 includes a third sensing element 1032. The first sensing component 1010, the second sensing component 1020, and the third sensing component 1030 can use, for example, a Hall effect sensor, a magnetoresistive sensor (MRS), or an optical sensor for sensing.
[0113] It should be noted that in this embodiment, the magnetic element 802 serves as a reference element for the first sensing element 1012, the second sensing element 1022, and the third sensing element 1032. In this way, the volume of the optical element driving mechanism 10 can be reduced to achieve miniaturization.
[0114] The first sensing component 1010 is used to sense the movement of the first movable part 200 relative to the second movable part 300. In this embodiment, the first sensing element 1012 is disposed on the lower portion 714 of the first circuit assembly 710.
[0115] The second sensing component 1020 is used to sense the movement of the second movable part 300. The second sensing element 1022 is disposed on the lower portion 724 of the second circuit assembly 720. When viewed along the direction perpendicular to the third axis D3, the first sensing element 1012 of the first sensing component 1010 and the second sensing element 1022 of the second sensing component 1020 are located on opposite sides of the second movable part 300.
[0116] Figure 3 This is a cross-sectional schematic diagram of an optical element drive mechanism 10 according to certain features of this disclosure. It should be understood that, for illustrative purposes, the schematic diagram may not be drawn to actual scale, and those skilled in the art will readily understand that some elements in the schematic diagram are simplified or omitted for illustrative purposes.
[0117] The buffer element 1200 prevents damage to components within the optical element drive mechanism 10 due to impact. In this embodiment, the buffer element 1200 is disposed on the second coil 822 and the third coil 832. The inner side of the frame 120 can serve as a second limiting element 125. The second limiting element 125 is used to limit the range of motion of the second movable part 300 from exceeding a second limit range. The frame 120 accommodates the first movable part 200 and the second movable part 300. When viewed along the first optical axis O1, the first movable part 200 at least partially overlaps with the frame 120.
[0118] Figure 4 for Figure 3 The diagram shows the fixed part 100, the first movable part 200, and the second movable part 300 in an initial position. When the first movable part 200 and the second movable part 300 are in the initial position, the first optical axis O1 and the second optical axis O2 are approximately coincident.
[0119] Figure 5A for Figure 4 The diagram illustrates the fixed part 100, the first movable part 200, and the second movable part 300 moving to an extreme position. It should be understood that, driven by the first drive assembly 810 and the second drive assembly 820, the first movable part 200 can move within a first extreme range, and the second movable part 300 can move within a second extreme range. Therefore, the first movable part 200 and the second movable part 300 do not have only a single extreme position, but one extreme position is used as an example here.
[0120] exist Figure 5AIn the illustrated embodiment, the first movable part 200 moves a distance L1 in the direction of the positive first axis D1, and the second movable part 300 moves a distance L2 in the direction of the negative first axis D1. This driving method, which utilizes two movable parts moving in opposite directions, allows the optical element drive mechanism 10 to achieve a larger anti-shake angle or a wider focusing range with a smaller size.
[0121] Figure 5B for Figure 4 A schematic diagram showing the fixed part 100, the first movable part 200, and the second movable part 300 moving to another extreme position. Figure 5B In the illustrated embodiment, the first movable part 200 moves a distance L1 in the direction of the negative first axis D1, and the second movable part 300 moves a distance L2 in the direction of the positive first axis D1. This driving method, which utilizes two movable parts moving in opposite directions, allows the optical element drive mechanism 10 to achieve a larger anti-shake angle or a wider focusing range with a smaller size.
[0122] Figure 6A A block diagram showing a first control assembly 1110 and an external device 3 disposed outside the optical element drive mechanism 10. Figure 6B A block diagram showing a second control component 1120 disposed outside the optical element driving mechanism 10 and an external device 3'. The first control component 1110 is used to output a first drive signal to the first drive component 810. The second control component 1120 is used to output a second drive signal to the second drive component 820. Figure 6A The external device 3 shown and Figure 6B The external device 3' shown can be a different external device.
[0123] When the optical element driving mechanism 10 is performing optical wobbling compensation, the first control component 1110 and the second control component 1120 simultaneously output a first driving signal and the second driving signal to the first driving component 1110 and the second driving component 1120, respectively, to perform the following: Figures 5A to 5B The described optical sway compensation function.
[0124] Figure 6C A flowchart 2000 shows the external device 3 measuring a first preset information. The first preset information includes different positions of the element corresponding to different magnetic field magnitudes within a first recording range, and the first recording range is greater than a first limit range. Step 2100 includes connecting the assembled optical element drive mechanism 10 to the external device 3. Step 2200 includes the external device 3 measuring the first preset information and recording the first preset information to the first control component 1110. Step 2300 includes removing the external device 3 from the optical element drive mechanism 10.
[0125] The second preset information is also similar to Figure 6C The displayed flowchart is recorded to the second control component 1120. The second preset information includes different positions of the element corresponding to different magnetic field magnitudes within a second recording range, and the second recording range is less than or equal to a second limit range. Specifically, the assembled optical element drive mechanism 10 is connected to the external device 3'. Then, the external device 3' measures the second preset information and records it to the second control component 1120. Then, the external device 3' is removed from the optical element drive mechanism 10.
[0126] Figure 7A A block diagram showing a processing unit 4 connected to the first control component 1110 is displayed. Figure 7B A flowchart 3000 shows the closed-loop control of the optical element drive mechanism 10. (Example) Figure 7A As shown, the processing unit 4 is connected to the first control component 1110, the first control component 1110 is connected to the first drive component 810 and the first sensing component 1010.
[0127] The second control component 1120 will be similar to Figure 7A The first control component 1110 shown is connected to the processing unit 4, the first drive component 810 and the first sensing component 1010 in a manner that connects to the processing unit 4, the second drive component 820 and the second sensing component 1020.
[0128] like Figure 7B As shown, step 3100 includes the processing unit 4 outputting a first indication signal to the first control component 1110. Step 3200 includes the first control component 1110 outputting a first drive signal based on the first sensing signal and the first preset information. Step 3300 includes the first drive component 810 receiving the first drive signal and driving the first movable part 200 to move.
[0129] Step 3400 includes the first sensing component 1010 sensing the movement of the first movable part 200 and outputting a first sensing signal. Then, step 3400 returns to step 3200 and continues this process. The optical element driving mechanism 10 is controlled in a closed loop using the system described above.
[0130] In other words, in flowchart 3000, the first indication signal is regarded as the target value, the first preset information is regarded as the reference value, and the first sensing signal senses the current position to perform closed-loop control.
[0131] Similarly, processing unit 4 outputs a second indication signal to second control component 1120. Next, second control component 1120 outputs a second drive signal based on the second sensing signal and second preset information. Then, second drive component 820 receives the second drive signal and drives the second movable part 300 to move. Then, second sensing component 1020 senses the movement of the second movable part 300 and outputs a second sensing signal; this process continues to cycle for closed-loop control.
[0132] Figure 8 This is a cross-sectional view showing an optical element driving mechanism 10A according to another embodiment. Figure 8 The optical element drive mechanism 10A shown is Figure 3 The difference in the optical element drive mechanism 10 shown is that, Figure 8 The illustrated embodiment also includes a set of magnetic elements 802A, a set of magnetically conductive elements 840A, and a buffer element 1200A. The magnetic elements 802A and 840A correspond to the first coil 812A. The buffer element 1200A is disposed between the second movable part 300 and the magnetically conductive elements 840A. With the configuration of the magnetic elements 802A and 840A, the first drive assembly 810A will have a stronger driving force than the first drive assembly 810.
[0133] Figure 9 This is a cross-sectional view showing an optical element driving mechanism 10B according to another embodiment. Figure 9 The optical element drive mechanism 10B shown is Figure 3 The difference in the optical element drive mechanism 10 shown is that, Figure 9 The illustrated embodiment also includes a buffer element 1200B disposed between the frame 120 and the first movable part 200.
[0134] Furthermore, in this embodiment, the first support component 610B is a set of suspension lines. It should be noted that although both the first support component 610B and the second support component 620 are suspension lines, they have different lengths.
[0135] Figure 10 This is a cross-sectional view showing an optical element driving mechanism 10C according to another embodiment. Figure 10 The optical element drive mechanism 10C shown is Figure 9 The difference between the optical element drive mechanism 10B shown is that, Figure 10The illustrated embodiment also includes a set of magnetic elements 802C, a set of magnetically conductive elements 840C, and a buffer element 1200C. Magnetic elements 802C and magnetically conductive elements 840C correspond to the first coil 812C. The buffer element 1200C is disposed between the frame 120 and the first movable portion 200. With the configuration of magnetic elements 802C and magnetically conductive elements 840C, the first drive assembly 810C will have a stronger driving force than the first drive assembly 810B.
[0136] Figure 11 This is a cross-sectional view showing an optical element driving mechanism 10D according to another embodiment. Figure 11 The optical element drive mechanism 10D shown is Figure 3 The difference in the optical element drive mechanism 10 shown is that, Figure 11 The first support component 610D of the shown embodiment is a set of suspension lines, and the second support component 620D is a set of ball bearings.
[0137] Figure 12 This is a cross-sectional view showing an optical element driving mechanism 10E according to another embodiment. The optical element driving mechanism 10E and... Figure 11 The difference between the optical element drive mechanism 10D and the other is that... Figure 12 The illustrated embodiment also includes a set of magnetic elements 802E and a set of magnetically conductive elements 840E. Magnetic elements 802E and magnetically conductive elements 840E correspond to the first coil 812E. With the configuration of magnetic elements 802E and magnetically conductive elements 840E, the first drive assembly 810E will have a stronger driving force than the first drive assembly 810D.
[0138] Figure 13 This is a cross-sectional view showing an optical element driving mechanism 10F according to another embodiment. Figure 13 The optical element drive mechanism 10F shown is Figure 3 The difference in the optical element drive mechanism 10 shown is that, Figure 13 The illustrated embodiment also includes an inner frame 120F and a third support assembly 630F. The inner frame 120F contacts the first support assembly 610, the second support assembly 620, and the third support assembly 630F. In this embodiment, the third support assembly 630F is a set of ball bearings. The configuration of the inner frame 120F and the third support assembly 630F facilitates movement of the first movable part 200 relative to the second movable part 300.
[0139] In summary, the present invention provides an optical element driving mechanism for driving a first optical element and a second optical element, thereby achieving functions such as optical focusing or optical shake compensation. By driving the first and second movable parts in opposite directions, the optical element driving mechanism can achieve a larger anti-shake angle or a wider focusing range with a smaller size, thus possessing superior optical focusing and optical compensation capabilities and significantly improving the performance of electronic devices.
[0140] The ordinal numbers in this specification and claims, such as "first," "second," etc., are not sequential in any particular order; they are only used to distinguish two different elements with the same name.
[0141] While the embodiments and advantages of this disclosure have been disclosed above, it should be understood that those skilled in the art can make modifications, substitutions, and refinements without departing from the spirit and scope of this disclosure. Furthermore, the scope of protection of this disclosure is not limited to the processes, machines, manufacturing methods, material compositions, apparatuses, methods, and steps described in the specific embodiments of the specification. Any processes, machines, manufacturing methods, material compositions, apparatuses, methods, and steps currently in development or to be developed in the future can be understood from the disclosure of this disclosure, and can be used according to this disclosure as long as they can perform substantially the same function or obtain substantially the same results in the embodiments described herein. Therefore, the scope of protection of this disclosure includes the aforementioned processes, machines, manufacturing methods, material compositions, apparatuses, methods, and steps. In addition, each claim constitutes an individual embodiment, and the scope of protection of this disclosure also includes combinations of the various claims and embodiments.
[0142] The above embodiments are described in sufficient detail to enable those skilled in the art to implement the apparatus disclosed herein through the above description. It should be understood that some modifications and refinements may be made without departing from the spirit and scope of this disclosure. Therefore, the scope of protection of this invention shall be determined by the appended claims.
Claims
1. An optical element driving mechanism, comprising: A first movable part for connecting a first optical element; A fixed part, wherein the first movable part is movable relative to the fixed part; A first drive component is used to drive the first movable part to move relative to the fixed part; as well as A first support assembly, wherein the first movable part is movable relative to the fixed part via the first support assembly; The first movable part can move relative to the fixed part in a first dimension within a first limit range; The optical element driving mechanism also includes: A first limiting element is used to limit the range of motion of the first movable part from exceeding the first limit range; A first sensing component for sensing the movement of the first movable part; and A first control component is used to output a first drive signal to the first drive component; The first sensing component outputs a first sensing signal, an external device measures and records first preset information, the first preset information includes the position of the first active part corresponding to the first sensing signal in a first recording range, and the first recording range is greater than the first limit range, and the first control component outputs the first drive signal according to the first sensing signal and the first preset information.
2. The optical element driving mechanism as described in claim 1, further comprising: A second movable part is used to connect a second optical element, wherein the second movable part is movable relative to the first movable part; as well as A second drive assembly is provided for driving the second movable part to move relative to the fixed part; The second movable part can move relative to the fixed part in a second dimension within a second limit range, and the first sensing component is used to sense the movement of the first movable part relative to the second movable part.
3. The optical element driving mechanism as claimed in claim 2, wherein the first sensing component includes a reference element or a first sensing element, the reference element or the first sensing element being fixedly disposed on the second movable part.
4. The optical element driving mechanism as claimed in claim 2 further includes a second support component, wherein the second movable part is movable relative to the fixed part via the second support component, and the length of the first support component is different from the length of the second support component.
5. The optical element driving mechanism as described in claim 2, further comprising: A second limiting element is provided to limit the range of motion of the second movable part from exceeding the second limit range; A second sensing component for sensing the movement of the second movable part; as well as A second control component is used to output a second drive signal to the second drive component; The second sensing component outputs a second sensing signal, the external device measures and records a second preset information, the second preset information includes the position of the second active part corresponding to the second sensing signal in a second recording range, and the second recording range is less than or equal to the second limit range, and the second control component outputs the second drive signal according to the second sensing signal and the second preset information.
6. The optical element driving mechanism of claim 5, wherein the first dimension is movement along a first axis, the second dimension is movement along the first axis, the first limit range is different from the second limit range, and the first sensing component and the second sensing component are located on different sides relative to the second movable part.
7. The optical element driving mechanism of claim 6, wherein when viewed along any direction perpendicular to a first optical axis, the first sensing component and the second sensing component are located on opposite sides relative to the second movable part.
8. The optical element driving mechanism as claimed in claim 5, wherein after receiving a first indication signal output by a processing unit, the first control component outputs the first driving signal, and after receiving a second indication signal output by the processing unit, the second control component outputs the second driving signal, wherein the processing unit is located outside the optical element driving mechanism.
9. The optical element driving mechanism as claimed in claim 8, wherein the first control component and the second control component simultaneously output the first driving signal and the second driving signal to the first driving component and the second driving component, respectively.
10. The optical element driving mechanism of claim 2 further includes a third driving component and a third movable part, the third driving component being used to drive the third movable part to move relative to the fixed part in a third dimension, the third dimension being the movement in the direction of a second optical axis.
11. The optical element driving mechanism of claim 10, wherein the first driving component includes a first magnetic element and a first coil, wherein the first coil corresponds to the first magnetic element.
12. The optical element driving mechanism of claim 11, wherein the second driving component includes a second magnetic element and a second coil, wherein the second coil corresponds to the second magnetic element.
13. The optical element driving mechanism of claim 12, wherein when viewed along a first optical axis, the first coil and the second coil at least partially overlap.
14. The optical element driving mechanism of claim 13, wherein the third driving component includes a third magnetic element and a third coil, wherein the third coil corresponds to the third magnetic element.
15. The optical element driving mechanism of claim 14 further includes a magnetically conductive element and a first circuit assembly, wherein the magnetically conductive element has a magnetically conductive material and is embedded in the first circuit assembly.
16. The optical element driving mechanism of claim 15, wherein when viewed along the first optical axis, the magnetically conductive element overlaps with the first coil.
17. The optical element driving mechanism of claim 14, wherein the fixing part includes a frame that accommodates the first movable part and the second movable part, wherein when viewed along the first optical axis, the first movable part at least partially overlaps with the frame.
18. The optical element driving mechanism of claim 17 further includes a plurality of buffer elements, wherein the plurality of buffer elements are disposed between the first movable part and the frame, on the second coil and the third coil.
19. The optical element driving mechanism of claim 17 further includes a second circuit assembly, wherein the second coil is fixedly disposed on the second circuit assembly, and the fixing part further includes a housing fixedly connected to the frame, wherein when viewed along a direction perpendicular to the first optical axis, the second circuit assembly is disposed between the housing and the frame.