Optical system

Abstract

An optical system comprises a fixed assembly, a movable part and a suspension module. The movable part is configured to be connected to an optical module, and the movable part can move relative to the fixed assembly. The movable part moves relative to the fixed assembly through the suspension module.

Description

Technical Field

[0001] The present disclosure relates to an optical system, and more particularly to an optical system with an anti-vibration function. Background Art

[0002] With the development of technology, many electronic devices (such as smart phones or car devices) now have the function of taking photos or recording videos. Through the camera module installed on the electronic device, users can operate the electronic device to capture a variety of photos.

[0003] The design of today's electronic devices continues to trend toward miniaturization, forcing the various components and structures of camera modules to shrink in size to achieve this goal. Generally speaking, the drive mechanism in a camera module may include a lens carrier configured to support a lens, and the drive mechanism may also provide autofocus or optical image stabilization functions. However, while existing drive mechanisms can achieve these photo or video recording functions, they still cannot meet all requirements.

[0004] Therefore, how to design a camera module that can quickly achieve optical image stabilization and achieve miniaturization is a topic worth exploring and solving today. Summary of the Invention

[0005] In view of this, the present disclosure aims to provide an optical system to solve the above-mentioned problems.

[0006] The present disclosure provides an optical system comprising a fixed assembly, a movable portion, and a suspension module. The movable portion is configured to be connected to an optical module and movable relative to the fixed assembly. The movable portion moves relative to the fixed assembly via the suspension module. The suspension module may include a first suspension component and a second suspension component, each configured to generate a first restoring force and a second restoring force, respectively.

[0007] According to some embodiments of the present disclosure, a suspension module includes a first suspension component and a second suspension component. The movable portion is movably connected to the fixed component via the first suspension component. The first suspension component is configured to generate a first restoring force on the movable portion. The second suspension component is configured to generate a second restoring force on the movable portion. The suspension module is configured to generate a total force on the movable portion. The total force includes a first restoring force and a second restoring force. When the movable portion is in a first position, the first restoring force is a first force. When the movable portion is in a second position, the first restoring force is a second force. When the movable portion is in a third position, the first restoring force is a third force. The first position is between the second and third positions. When the movable portion is in the first position, the second restoring force is a fourth force. When the movable portion is in the second position, the second restoring force is a fifth force. When the movable portion is in the third position, the second restoring force is a sixth force. The absolute value of the first force is greater than or equal to the absolute value of the fourth force. The absolute value of the second force is greater than the absolute value of the fifth force. The absolute value of the third force is greater than the absolute value of the sixth force.

[0008] The present disclosure provides an optical system comprising a fixed component, a movable portion, and a suspension module. The movable portion is configured to be connected to an optical module and movable relative to the fixed component. The movable portion moves relative to the fixed component via the suspension module. The suspension module may include a first suspension component and a second suspension component, each configured to generate a first restoring force and a second restoring force, respectively, to apply to the movable portion.

[0009] In some embodiments, the first suspension assembly may include a first elastic element and a second elastic element, and the movable portion is suspended within the fixed assembly by the first and second elastic elements. The second suspension assembly may include multiple magnetic elements, some of which are disposed on the fixed assembly and others on the movable portion. Based on this configuration, when the optical system is impacted and the movable portion shakes relative to the fixed assembly, the combined force of the first and second restoring forces can quickly return the movable portion to a stable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present disclosure will be clearly understood through the detailed description that follows in conjunction with the accompanying drawings. It is emphasized that, in accordance with standard industry practice, various features are not drawn to scale and are used for illustrative purposes only. In fact, the dimensions of various features may be arbitrarily enlarged or reduced for clarity of illustration.

[0011] Figure 1 is a three-dimensional diagram of an optical system according to an embodiment of the present disclosure.

[0012] Figure 2 FIG. 4 is an exploded view of an optical system according to an embodiment of the present disclosure.

[0013] Figure 3 The optical system according to one embodiment of the present disclosure is Figure 1 Cross-section of midline segment AA.

[0014] Figure 4 1 is a top view of a partial structure of an optical system according to an embodiment of the present disclosure.

[0015] Figures 5 to 7 1 is a front view schematic diagram of a movable portion, a first elastic element, and a second elastic element located at different positions according to an embodiment of the present disclosure.

[0016] Figure 8 Graphs of the first restoring force, the second restoring force, and the total force when the movable portion is located at different positions according to an embodiment of the present disclosure.

[0017] Figure 9 Graphs showing the transmittance of an optical system according to an embodiment of the present disclosure and a known optical system.

[0018] The reference numerals are as follows:

[0019] 50: Optical module

[0020] 100: Optical system

[0021] 102: Shell

[0022] 104:Framework

[0023] 106: first elastic element

[0024] 1061: first inner connecting portion

[0025] 1062: first outer connecting portion

[0026] 1063: string part

[0027] 108: Activities Department

[0028] 110: second elastic element

[0029] 1101: Second inner connecting portion

[0030] 1102: Second outer connecting portion

[0031] 1103: string part

[0032] 112: Base

[0033] A: Endpoint

[0034] ADA: Adjustment Components

[0035] ADE1: Support connector

[0036] ADE2: Adjustment element

[0037] B: Endpoint

[0038] BA: Stop assembly

[0039] BP1: First stopper

[0040] BP2: Second stopper

[0041] BP3: Third stopper

[0042] BP4: Fourth stopper

[0043] C: Endpoint

[0044] CV0: Curve

[0045] CV1: Line segment

[0046] CV2: Line Segment

[0047] CV3: Curve

[0048] CVT: Line Segment

[0049] D: Endpoint

[0050] F1: The First Force

[0051] F2: Second force

[0052] F3: The third force

[0053] F4: The Fourth Force

[0054] F5: The Fifth Force

[0055] F6: The Sixth Force

[0056] F7: The Seventh Force

[0057] F8: The Eighth Force

[0058] F9: The Ninth Force

[0059] FA:Fixed components

[0060] IT1: First difference

[0061] IT2: Second difference

[0062] MD1: Shortest distance

[0063] ME1: First magnetic element

[0064] ME2: Second magnetic element

[0065] ME3: The third magnetic element

[0066] ME4: The fourth magnetic element

[0067] MF1: ​​First magnetic force

[0068] MF2: Second magnetic force

[0069] O: Optical axis

[0070] P1: First position

[0071] P2: Second position

[0072] P3: Third position

[0073] RD: Shortest distance

[0074] SA1: First suspension assembly

[0075] SA2: Second suspension assembly

[0076] SM: Suspension Module

[0077] X: X axis

[0078] Y: Y axis

[0079] Z: Z axis DETAILED DESCRIPTION

[0080] The following discloses many different implementation methods or examples to implement the different features of the subject matter provided. The following describes specific embodiments of the components and their arrangements to illustrate the present disclosure. Of course, these embodiments are only for illustration and should not be used to limit the scope of the present disclosure. For example, when the specification mentions that a first feature component is formed on a second feature component, it may include an embodiment in which the first feature component and the second feature component are in direct contact. It may also include an embodiment in which there are other features between the first feature component and the second feature component. In other words, the first feature component and the second feature component are not in direct contact.

[0081] In addition, repeated numbers or labels may be used in different embodiments. These repetitions are only for the purpose of simply and clearly describing the present disclosure and do not represent a specific relationship between the different embodiments and / or structures discussed. In addition, in the present disclosure, forming, connecting and / or coupling to another feature component on top of another feature component may include embodiments in which the feature components are formed to be in direct contact, and may also include embodiments in which additional feature components can be formed to be inserted into the above-mentioned feature components, so that the above-mentioned feature components may not be in direct contact. In addition, spatially related words such as "vertical", "above", "up", "below", "bottom" and similar words (such as "downwardly", "upwardly", etc.) may be used. These spatially related words are for the purpose of facilitating the description of the relationship between one (some) element or feature and another (some) element or feature in the diagram. These spatially related words are intended to cover different directions of the device including the feature.

[0082] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meanings as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with the background or context of the relevant technology and this disclosure and should not be interpreted in an idealized or overly formal manner unless otherwise defined herein.

[0083] Furthermore, the use of ordinal numbers such as "first" and "second" in the specification and claims to modify claim elements does not in itself imply or represent that the claimed element has any previous ordinal number, nor does it represent the order of one claimed element and another claimed element, or the order in the manufacturing method. The use of multiple ordinal numbers is only used to clearly distinguish a claimed element with a certain name from another claimed element with the same name.

[0084] Furthermore, in some embodiments of the present disclosure, terms such as "connected" and "interconnected," unless otherwise specified, may refer to two structures being in direct contact, or to two structures not being in direct contact, with another structure positioned between them. Furthermore, such terms may include situations where both structures are movable or both structures are fixed.

[0085] Please refer to Figures 1 to 3 , Figure 1 is a perspective view of an optical system 100 according to an embodiment of the present disclosure. Figure 2 is an exploded view of an optical system 100 according to an embodiment of the present disclosure, and Figure 3 The optical system 100 according to an embodiment of the present disclosure is Figure 1The optical system 100 may be an optical camera module configured to carry and drive an optical element (eg, a lens).

[0086] Optical system 100 can be installed in various electronic devices or portable electronic devices, such as automobiles or smartphones, to enable users to perform image capture. In this embodiment, optical system 100 may include optical image stabilization (OIS). Furthermore, optical system 100 can be implemented in a small form factor. For example, optical system 100 can be a cube with a side length of 3 to 5 cm, making it easy for users to install it in a car or on an electronic product.

[0087] In this embodiment, the optical system 100 may include a fixed assembly FA, ​​a movable portion 108, and a suspension module SM. The movable portion 108 is configured to be connected to an optical module 50 and is movable relative to the fixed assembly FA. The optical module 50 may be, for example, a lens module or a camera module, and may include at least one optical element (e.g., an optical lens, not shown), which may define an optical axis O. Furthermore, the movable portion 108 is movable relative to the fixed assembly FA via the suspension module SM.

[0088] In this embodiment, if Figure 2 As shown, the fixed assembly FA includes a housing 102, a frame 104, and a base 112. The housing 102 is fixedly connected to the base 112, and the frame 104 is fixedly connected to the housing 102. Furthermore, the suspension module SM may include a first suspension assembly SA1 and a second suspension assembly SA2, and the movable portion 108 may be movably connected to the fixed assembly FA via the first suspension assembly SA1.

[0089] In this embodiment, the first suspension assembly SA1 is configured to generate a first restoring force on the movable portion 108, and the second suspension assembly SA2 is configured to generate a second restoring force on the movable portion 108. Therefore, when the optical system 100 is subjected to an impact, the first and second restoring forces can quickly return the movable portion 108 to a stable state. The specific operation of the first and second restoring forces will be described in the following paragraphs.

[0090] like Figure 2 As shown, the first suspension assembly SA1 may include a first elastic element 106 and a second elastic element 110. The first elastic element 106 may have a plate-like structure and be connected to the movable portion 108 and the frame 104 of the fixed assembly FA. The first elastic element 106 may be parallel to the optical axis O. Specifically, the optical axis O may be a normal vector perpendicular to the first elastic element 106.

[0091] Similarly, the second elastic element 110 can have a plate-like structure and serves as a base 112 connecting the movable portion 108 and the fixed assembly FA. The second elastic element 110 can be, for example, parallel to the first elastic element 106, but is not limited thereto. The second elastic element 110 and the first elastic element 106 can be made of metal, but are not limited thereto.

[0092] like Figure 3 As shown, when viewed along the optical axis O, the first elastic element 106 and the second elastic element 110 are respectively located on two sides of the optical module 50 , for example, located above and below the optical module 50 and the movable portion 108 .

[0093] Please refer to Figures 1 to 4 . Figure 4 FIG. 1 is a top view of a portion of the optical system 100 according to an embodiment of the present disclosure. In this embodiment, the first elastic element 106 has two first inner connecting portions 1061 , two first outer connecting portions 1062 , and a plurality of string portions 1063 .

[0094] The first inner connecting portion 1061 is fixedly connected to the movable portion 108 , the first outer connecting portion 1062 is fixedly connected to the frame 104 , and the string portion 1063 is connected between the corresponding first inner connecting portion 1061 and the first outer connecting portion 1062 .

[0095] Furthermore, in this embodiment, if Figure 3 As shown, the optical system 100 may further include an adjustment assembly ADA configured to adjust the first suspension assembly SA1 of the suspension module SM. The adjustment assembly ADA may include a support connector ADE1 and two adjustment elements ADE2, and the support connector ADE1 is disposed on the base 112 of the fixing assembly FA.

[0096] In this embodiment, if Figure 2 and Figure 3 As shown, the second elastic element 110 is connected between the supporting connector ADE1 and the movable portion 108. Figure 2 and Figure 4 As shown, the second elastic element 110 has two second inner connecting portions 1101 , two second outer connecting portions 1102 and a plurality of string portions 1103 .

[0097] The second inner connecting portion 1101 is fixedly connected to the movable portion 108 , the second outer connecting portion 1102 is fixedly connected to the supporting connector ADE1 , and the string portion 1103 is connected between the corresponding second inner connecting portion 1101 and the second outer connecting portion 1102 .

[0098] like Figure 3As shown, the adjustment element ADE2 is movably disposed on the base 112, and the adjustment element ADE2 is, for example, a screw that passes through the base 112. The adjustment element ADE2 is configured to abut the supporting connector ADE1 to control the supporting connector ADE1 to move up and down along the z-axis, thereby adjusting a minimum distance MD1 between the second outer connecting portion 1102 and the movable portion 108.

[0099] For example, if Figure 3 As shown, the two adjustment elements ADE2 can move up and down along the Z axis, so that the second elastic element 110 moves up and down along the Z axis along with the supporting connection piece ADE1, thereby adjusting the elastic force applied by the second elastic element 110 to the movable portion 108.

[0100] It is worth noting that Figure 4 As shown, when observed along a direction perpendicular to the optical axis O, for example, along the Z-axis direction, the two first inner connection parts 1061 are arranged symmetrically on the left and right, the two second inner connection parts 1101 are arranged symmetrically on the top and bottom, and the first inner connection part 1061 does not overlap with the second inner connection part 1101.

[0101] Based on such a configuration, when the optical system 100 is impacted, the first restoring force jointly generated by the first elastic element 106 and the second elastic element 110 can help the movable portion 108 return to a stable state more quickly.

[0102] In addition, if Figure 2 and Figure 3 As shown, the second suspension assembly SA2 may include two first magnetic elements ME1 and two second magnetic elements ME2. The first magnetic elements ME1 are located on the frame 104 of the fixed assembly FA, ​​and the second magnetic elements ME2 are located on the movable portion 108. The second magnetic elements ME2 correspond to at least a portion of the first magnetic elements ME1 to generate the second restoring force.

[0103] Similarly, the second suspension assembly SA2 may further include two third magnetic elements ME3 and two fourth magnetic elements ME4. The third magnetic elements ME3 are located on the movable portion 108, and the fourth magnetic elements ME4 are located on the base 112 of the fixed assembly FA. The fourth magnetic elements ME4 correspond to the third magnetic elements ME3 to generate at least a portion of the second restoring force.

[0104] In this embodiment, each pair of the first to fourth magnetic elements ME1 to ME4 are arranged symmetrically, so the following paragraphs will only describe the first to fourth magnetic elements ME1 to ME4 on a single side.

[0105] like Figure 3As shown, the second magnetic element ME2 and the third magnetic element ME3 on the right side of the movable portion 108 are located between the first magnetic element ME1 and the fourth magnetic element ME4 .

[0106] In this embodiment, these magnetic elements may be magnets. Figure 3 As shown, a first magnetic attraction force MF1 is generated between the first magnetic element ME1 and the corresponding second magnetic element ME2, and a second magnetic attraction force MF2 is generated between the third magnetic element ME3 and the corresponding fourth magnetic element ME4. The sum of the first magnetic attraction force MF1 and the second magnetic attraction force MF2 is the aforementioned second restoring force.

[0107] It is worth noting that in other embodiments, not all of these magnetic elements are magnets. For example, the second magnetic element ME2 and the third magnetic element ME3 may be magnets, while the first magnetic element ME1 and the fourth magnetic element ME4 may be magnetically conductive plates. In other words, any configuration in which the first magnetic element ME1 and the second magnetic element ME2 can attract each other, and the third magnetic element ME3 and the fourth magnetic element ME4 can attract each other, falls within the scope of the present disclosure.

[0108] Furthermore, in this embodiment, if Figure 2 and Figure 3 As shown, the optical system 100 may further include a stopper assembly BA configured to limit the movement of the movable portion 108 within a range of motion. When the movable portion 108 is located at any position within the range of motion, the gap between the first magnetic element ME1 and the second magnetic element ME2 is greater than zero. The movement of the movable portion 108 may be, for example, up and down movement along the Z axis.

[0109] Specifically, when the movable portion 108 is located at any position within the range of motion, the shortest distance between the first magnetic element ME1 and the second magnetic element ME2 is greater than 1 mm to ensure that the first magnetic element ME1 and the second magnetic element ME2 are not attracted to each other and fixed.

[0110] Similarly, when the movable portion 108 is located at any position within the range of motion, the gap between the third magnetic element ME3 and the fourth magnetic element ME4 is greater than 0. Specifically, when the movable portion 108 is located at any position within the range of motion, the shortest distance between the third magnetic element ME3 and the fourth magnetic element ME4 is greater than 1 mm.

[0111] To achieve the above configuration, the stopper assembly BA may include a first stopper portion BP1 and a second stopper portion BP2. The first stopper portion BP1 is located on the frame 104 of the fixed assembly FA, ​​and the second stopper portion BP2 is located on the movable portion 108. The first magnetic element ME1 and the second magnetic element ME2 are respectively disposed in the first stopper portion BP1 and the second stopper portion BP2.

[0112] Correspondingly, the stop assembly BA may further include a third stop portion BP3 and a fourth stop portion BP4. The third stop portion BP3 is located on the movable portion 108, and the fourth stop portion BP4 is located on the base 112 of the fixed assembly FA. The third magnetic element ME3 and the fourth magnetic element ME4 are respectively disposed in the third stop portion BP3 and the fourth stop portion BP4.

[0113] The second stopper BP2 and the third stopper BP3 are protrusions on the movable portion 108, configured to abut the first stopper BP1 and the fourth stopper BP4, respectively. Based on this configuration, the first stopper BP1 and the second stopper BP2 can ensure that the shortest distance between the first magnetic element ME1 and the second magnetic element ME2 is greater than 1 mm, and the third stopper BP3 and the fourth stopper BP4 can ensure that the shortest distance between the third magnetic element ME3 and the fourth magnetic element ME4 is greater than 1 mm.

[0114] Please refer to the following Figures 5 to 7 . Figures 5 to 7 Figure 1 shows schematic front views of the movable portion 108, first elastic element 106, and second elastic element 110 in different positions according to one embodiment of the present disclosure. When the optical system 100 is subjected to shock or vibration, the movable portion 108 may move back and forth along the Z-axis. In this case, the suspension module SM is configured to generate a total force on the movable portion 108, causing it to quickly return to a stable state (e.g., immobilized relative to the fixed assembly FA).

[0115] The total force includes the first restoring force and the second restoring force. In other words, the total force is the sum of the first restoring force and the second restoring force.

[0116] like Figures 5 to 7 As shown, when the movable portion 108 is located Figure 5 When the movable portion 108 is at a first position P1, the first restoring force may be a first force F1. Figure 6 When the movable portion 108 is at a second position P2, the first restoring force is a second force F2, and when the movable portion 108 is at a second position P2, the first restoring force is a second force F2. Figure 7 When the first position P3 is reached, the first restoring force is a third force F3.

[0117] In other words, the magnitude and direction of the first restoring force vary depending on the position of the movable portion 108. The first position P1 is located between the second position P2 and the third position P3, for example, but not limited to, an intermediate position between the second position P2 and the third position P3. Furthermore, the second position P2 may be a first limit of the range of motion of the movable portion 108, and the third position P3 may be a second limit of the range of motion of the movable portion 108, but not limited to these.

[0118] It should be noted that for the sake of clarity, Figures 5 to 7 In the embodiment, the two elastic restoring forces provided by the first elastic element 106 and the second elastic element 110 are represented by only the resultant force (the first restoring force).

[0119] Similarly, when the movable portion 108 is at the first position P1, the second restoring force is a fourth force F4, when the movable portion 108 is at the second position P2, the second restoring force is a fifth force F5, and when the movable portion 108 is at the third position P3, the second restoring force is a sixth force F6.

[0120] That is, the second restoring force will also change its magnitude and direction according to the position of the movable portion 108. In addition, it should be noted that for the sake of clarity, Figure 3 The magnetic attraction provided by the first magnetic attraction force MF1 and the second magnetic attraction force MF2 is a resultant force (second restoring force) at Figures 5 to 7 Indicated in.

[0121] The absolute value of the first force F1 is greater than or equal to the absolute value of the fourth force F4 , the absolute value of the second force F2 is greater than the absolute value of the fifth force F5 , and the absolute value of the third force F3 is greater than the absolute value of the sixth force F6 .

[0122] For example, when the movable portion 108 is located at Figure 5 In the first position, the movable portion 108 can be located between the second position P2 and the third position P3. At this time, the absolute value of the first force F1 can be slightly greater than or equal to the absolute value of the fourth force F4, thereby reducing the upward or downward shaking force of the movable portion 108.

[0123] Furthermore, when the movable portion 108 moves upward Figure 6 When the first elastic element 106 is at the second position P2, the absolute value of the second force F2 is greater than the absolute value of the first force F1 because the first elastic element 106 provides a larger elastic restoring force.

[0124] In addition, it is worth noting that when the movable portion 108 moves upward Figure 6 When the second position P2 (first limit position) is reached, Figure 3The second stop portion BP2 is configured to abut against the first stop portion BP1 to limit the movable portion 108 to be within the aforementioned motion range.

[0125] Similarly, when the movable portion 108 moves downward Figure 7 When the second elastic element 110 is at the third position P3 (the second extreme position), the absolute value of the third force F3 is greater than the absolute value of the first force F1 because the second elastic element 110 provides a larger elastic restoring force. The direction of the second force F2 is opposite to that of the third force F3.

[0126] Similarly, when the movable portion 108 moves downward Figure 7 When the third position P3 (second limit position) is reached, Figure 3 The third stop portion BP3 is configured to abut against the fourth stop portion BP4 to limit the movable portion 108 to be within the aforementioned motion range.

[0127] On the other hand, when the movable portion 108 moves upward Figure 6 When the magnetic element ME1 is at the second position P2, the absolute value of the fifth force F5 is greater than the absolute value of the fourth force F4 because the first magnetic element ME1 and the second magnetic element ME2 provide a larger magnetic attraction force.

[0128] Similarly, when the movable portion 108 moves downward Figure 7 When the magnetic element ME3 and the fourth magnetic element ME4 are at the third position P3, the absolute value of the sixth force F6 is greater than the absolute value of the fourth force F4. The direction of the fifth force F5 is opposite to that of the sixth force F6.

[0129] It is worth noting that in order for the movable portion 108 to quickly return to a stable state after being shaken, the absolute value of the fifth force F5 in this embodiment is at least half the absolute value of the second force F2, and the absolute value of the sixth force F6 is at least half the absolute value of the third force F3. The direction of the second force F2 is opposite to that of the fifth force F5, and the direction of the third force F3 is opposite to that of the sixth force F6.

[0130] Furthermore, in this embodiment, when the movable portion 108 is located at the first position P1 , the total acting force is a seventh force F7 , and the seventh force F7 is the resultant force of the first force F1 and the fourth force F4 .

[0131] When the movable portion 108 is at the second position P2, the total force is an eighth force F8, which is the resultant of the second force F2 and the fifth force F5. When the movable portion 108 is at the third position P3, the total force is a ninth force F9, which is the resultant of the third force F3 and the sixth force F6.

[0132] The absolute value of the eighth force F8 is greater than the absolute value of the seventh force F7, and the absolute value of the ninth force F9 is greater than the absolute value of the seventh force F7. The direction of the eighth force F8 is opposite to the direction of the ninth force F9.

[0133] Furthermore, the absolute value of the eighth force F8 is smaller than the absolute value of the second force F2, and the direction of the eighth force F8 is the same as the direction of the second force F2. Similarly, the absolute value of the ninth force F9 is smaller than the absolute value of the third force F3, and the direction of the ninth force F9 is the same as the direction of the third force F3.

[0134] Please refer to Figure 8 . Figure 8 Graphs illustrating the first restoring force, the second restoring force, and the total force when the movable portion 108 is located at different positions according to an embodiment of the present disclosure. Line segment CV1 represents the magnitude of the first restoring force at different positions, line segment CV2 represents the magnitude of the second restoring force at different positions, and line segment CVT represents the magnitude of the total force at different positions.

[0135] like Figure 8 As shown, endpoint A of line segment CV1 represents the force at the third position P3 (third force F3), endpoint B of line segment CV1 represents the force at the second position P2 (second force F2), and there is a first difference IT1 (on the vertical axis) between the second force F2 and the third force F3.

[0136] Similarly, endpoint C of line segment CVT represents the force at the third position (ninth force F9), endpoint D of line segment CVT represents the force at the second position (eighth force F8), and there is a second difference IT2 (on the vertical axis) between the eighth force F8 and the ninth force F9.

[0137] like Figure 8 As shown, the first difference IT1 is greater than the second difference IT2. That is, after adding the second restoring force, the magnitude of the first restoring force can be reduced.

[0138] Furthermore, if Figure 8 As shown, a minimum distance RD is formed between the second position P2 and the third position P3. In this embodiment, the minimum distance RD is, for example, 3 mm, but is not limited thereto. The first difference IT1 and the minimum distance RD may form a first slope, and the second difference IT2 and the minimum distance RD may form a second slope, wherein the first slope is greater than the second slope.

[0139] That is, between the second position P2 and the third position P3 , the total force applied to the movable portion 108 is relatively gentle, so that the movable portion 108 can quickly reach a stable state after being shaken.

[0140] Please refer to Figure 9 . Figure 9 Graphs showing the transmittance of the optical system 100 according to an embodiment of the present disclosure and a known optical system. Figure 9 As shown, curve CV3 represents the transmissibility of the optical system 100 of the present disclosure, while curve CV0 represents the transmissibility of a conventional optical system. Transmissibility can be defined as input / output. The input is the displacement of the optical system when it is shaken, and the output is the displacement of the movable part when the optical system is shaken.

[0141] exist Figure 9 As shown by the curve CV0, at different frequencies, the displacement transmitted to the movable part by the optical system is relatively large, that is, the conventional movable part is not easy to achieve a stable state when shaken.

[0142] On the other hand, as shown by curve CV3, in the present disclosure, due to the configuration of the suspension module SM, the transmittance drops sharply at frequencies above 5 Hz. This means that the movable portion 108 of the present disclosure can quickly reach a stable state when subjected to vibration and is not easily affected by external factors. Therefore, the optical module 50 supported by the movable portion 108 can still capture clear images even when the optical system 100 is subjected to vibration.

[0143] In summary, the present disclosure provides an optical system 100 comprising a fixed assembly FA, ​​a movable portion 108, and a suspension module SM. The movable portion 108 is configured to be connected to an optical module 50 and is movable relative to the fixed assembly FA. The movable portion 108 moves relative to the fixed assembly FA via the suspension module SM. The suspension module SM may include a first suspension assembly SA1 and a second suspension assembly SA2, each configured to generate a first restoring force and a second restoring force, respectively, to be applied to the movable portion 108.

[0144] In some embodiments, the first suspension assembly SA1 may include a first elastic element 106 and a second elastic element 110, and the movable portion 108 is suspended within the fixed assembly FA via the first elastic element 106 and the second elastic element 110. The second suspension assembly SA2 may include multiple magnetic elements, some of which are disposed on the fixed assembly FA and others on the movable portion 108. Based on this configuration, when the optical system 100 is impacted and the movable portion 108 shakes relative to the fixed assembly FA, ​​the combined force of the first and second restoring forces can quickly return the movable portion 108 to a stable state.

[0145] Although the embodiments of the present disclosure and their advantages have been disclosed as above, it should be understood that those skilled in the art may make changes, substitutions and modifications without departing from the spirit and scope of the present disclosure. In addition, the scope of protection of the present disclosure is not limited to the processes, machines, manufactures, material compositions, devices, methods and steps in the specific embodiments described in the specification. Any person skilled in the art can understand from the disclosure of the present disclosure that the processes, machines, manufactures, material compositions, devices, methods and steps currently or in the future are developed. As long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein, they can be used according to the present disclosure. Therefore, the scope of protection of the present disclosure includes the above-mentioned processes, machines, manufactures, material compositions, devices, methods and steps. In addition, each claim constitutes an individual embodiment, and the scope of protection of the present disclosure also includes the combination of each claim and embodiment.

Claims

1. An optical system comprising: a fixing component; a movable portion configured to be connected to an optical module and movable relative to the fixed component; and A suspension module, wherein the movable part moves relative to the fixed component via the suspension module.

2. The optical system of claim 1, wherein The suspension module includes a first suspension component and a second suspension component; The movable portion is movably connected to the fixed component via the first suspension component; The first suspension assembly is configured to generate a first restoring force on the movable portion; The second suspension assembly is configured to generate a second restoring force on the movable portion; The suspension module is configured to generate a total force on the movable part; The total force includes the first restoring force and the second restoring force; When the movable portion is located at a first position, the first restoring force is a first force; When the movable portion is located at a second position, the first restoring force is a second force; When the movable portion is located at a third position, the first restoring force is a third force; The first position is located between the second position and the third position; When the movable portion is located at the first position, the second restoring force is a fourth force; When the movable portion is located at the second position, the second restoring force is a fifth force; When the movable portion is located at the third position, the second restoring force is a sixth force; The absolute value of the first force is greater than or equal to the absolute value of the fourth force; The absolute value of the second force is greater than the absolute value of the fifth force; The absolute value of the third force is greater than the absolute value of the sixth force.

3. The optical system of claim 2, wherein The absolute value of the second force is greater than the absolute value of the first force; The absolute value of the third force is greater than the absolute value of the first force; The direction of the second force is opposite to the direction of the third force; The absolute value of the fifth force is greater than the absolute value of the fourth force; The absolute value of the sixth force is greater than the absolute value of the fourth force; The direction of the fifth force is opposite to the direction of the sixth force.

4. The optical system of claim 3, wherein The direction of the second force is opposite to the direction of the fifth force; The absolute value of the fifth force is at least greater than half of the absolute value of the second force; The direction of the third force is opposite to the direction of the sixth force; The absolute value of the sixth force is at least greater than half of the absolute value of the third force.

5. The optical system of claim 4, wherein When the movable portion is located at the first position, the total force is a seventh force; When the movable portion is located at the second position, the total force is an eighth force; When the movable portion is located at the third position, the total force is a ninth force; The absolute value of the eighth force is greater than the absolute value of the seventh force; The absolute value of the ninth force is greater than the absolute value of the seventh force; The direction of the eighth force is opposite to the direction of the ninth force; The absolute value of the eighth force is smaller than the absolute value of the second force; The direction of the eighth force is the same as the direction of the second force; The absolute value of the ninth force is smaller than the absolute value of the third force; The direction of the ninth force is the same as the direction of the third force.

6. The optical system of claim 5, wherein There is a first difference between the second force and the third force; There is a second difference between the eighth force and the ninth force; The first difference is greater than the second difference; A shortest distance is formed between the second position and the third position; The first difference and the shortest distance form a first slope; The second difference and the shortest distance form a second slope; The first slope is greater than the second slope.

7. The optical system of claim 2, wherein The first suspension assembly includes a first elastic element and a second elastic element; The first elastic element has a plate-shaped structure, and the first elastic element connects the movable part and the fixing assembly; The optical module has an optical element, which defines an optical axis; The first elastic element is parallel to the optical axis; The optical axis is perpendicular to the normal vector of the first elastic element; The second elastic element has a plate-shaped structure, and the second elastic element connects the movable part and the fixing assembly; When viewed along the optical axis, the first elastic element and the second elastic element are respectively located on two sides of the optical module.

8. The optical system of claim 7, wherein The second suspension assembly includes a first magnetic element and a second magnetic element; The first magnetic element is located in the fixing assembly; The second magnetic element is located at the movable portion; The second magnetic element corresponds to the first magnetic element to generate at least a portion of the second restoring force; The second suspension assembly also includes a third magnetic element and a fourth magnetic element; The third magnetic element is located at the movable portion; The fourth magnetic element is located in the fixing assembly; The fourth magnetic element corresponds to the third magnetic element to generate at least a portion of the second restoring force; The second magnetic element and the third magnetic element are located between the first magnetic element and the fourth magnetic element.

9. The optical system of claim 8, wherein The optical system further includes a stop assembly configured to limit the movement of the movable portion within a range of motion; When the movable portion is located at any position within the motion range, the gap between the first magnetic element and the second magnetic element is greater than 0; When the movable portion is located at any position within the motion range, the shortest distance between the first magnetic element and the second magnetic element is greater than 1 mm; When the movable portion is located at any position within the motion range, the gap between the third magnetic element and the fourth magnetic element is greater than 0; When the movable portion is located at any position within the motion range, the shortest distance between the third magnetic element and the fourth magnetic element is greater than 1 mm; The stop assembly includes a first stop portion and a second stop portion; The first stopper is located on the fixing assembly; The second stopper is located on the movable part; When the movable portion is located at a first limit position, the second stop portion is configured to abut against the first stop portion to limit the movable portion to be located within the motion range; The first magnetic element and the second magnetic element are respectively disposed in the first stop portion and the second stop portion; The stop assembly includes a third stop portion and a fourth stop portion; The third stopper is located on the movable portion; The fourth stopper is located on the fixing assembly; When the movable portion is located at a second limit position, the third stop portion is configured to abut against the fourth stop portion to limit the movable portion to be located within the motion range; The third magnetic element and the fourth magnetic element are respectively disposed in the third stopping portion and the fourth stopping portion.

10. The optical system of claim 7, wherein The fixing assembly has a shell, a frame and a base; The housing is fixedly connected to the base; The frame is fixedly connected to the housing; The first elastic element has a first inner connecting portion and a first outer connecting portion; The first inner connecting portion is fixedly connected to the movable portion; The first outer connecting portion is fixedly connected to the frame; The optical system further comprises an adjustment component configured to adjust the first suspension component of the suspension module; The adjustment assembly includes a supporting connection member and an adjustment element; The supporting connecting member is arranged on the base; The second elastic element is connected between the supporting connecting member and the movable part; The second elastic element has a second inner connecting portion and a second outer connecting portion; The second inner connecting portion is fixedly connected to the movable portion; The second outer connecting portion is fixedly connected to the supporting connecting member; When viewed along a direction perpendicular to the optical axis, the first inner connecting portion does not overlap the second inner connecting portion; The adjusting element is movably disposed on the base; The adjusting element is configured to abut against the supporting connecting member and is configured to adjust a shortest distance between the second outer connecting portion and the movable portion.

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