Optical element drive system

Abstract

The present invention provides an optical element drive system, comprising an optical element drive mechanism and a control assembly. The optical element drive mechanism includes a movable portion, a fixed portion, a drive assembly, and a position sensing assembly. The movable portion is used to connect the optical element. The movable portion is movable relative to the fixed portion, and the movable portion is located in a receiving space of the fixed portion. The drive assembly is used to drive the movable portion to move relative to the fixed portion. The control assembly outputs a drive signal to the drive assembly to control the drive assembly. The position sensing assembly is used to sense the movement of the movable portion relative to the fixed portion and output a motion sensing signal to the control assembly.

Description

Technical Field

[0001] The present invention relates to an optical element driving system. Background Art

[0002] With the development of technology, many electronic devices (such as smart phones or digital cameras) now have the function of taking photos or recording videos. These electronic devices are becoming more and more popular and are developing in the direction of convenient and lightweight designs to provide users with more choices.

[0003] Electronic devices with camera or video recording capabilities typically incorporate an optical element drive system to drive an optical element (such as a lens) along the optical axis, thereby achieving autofocus (AF) or optical image stabilization (OIS). Light passes through the optical element to form an image on a photosensitive element. However, with the current trend toward smaller and more durable mobile devices, effectively reducing the size of optical element drive systems and improving their durability have become crucial issues. Summary of the Invention

[0004] An embodiment of the present invention provides an optical element drive system. The optical element drive system includes an optical element drive mechanism and a control assembly. The optical element drive mechanism includes a movable portion, a fixed portion, a drive assembly, and a position sensing assembly. The movable portion is used to connect the optical element. The movable portion is movable relative to the fixed portion and is located in a receiving space of the fixed portion. The drive assembly is used to drive the movable portion to move relative to the fixed portion. The control assembly outputs a drive signal to the drive assembly to control the drive assembly. The position sensing assembly is used to sense the movement of the movable portion relative to the fixed portion and output a motion sensing signal to the control assembly.

[0005] In some embodiments, the optical element driving system further includes a stabilizing component for applying a preset force to the movable part; an inertial sensing component for sensing the motion state of the optical element driving mechanism and outputting an inertial sensing signal to the control component; a temperature sensing component for sensing the temperature of the optical element driving mechanism and outputting a temperature sensing signal to the control component; the driving component includes a first driving component, the material of the first driving component includes a shape memory alloy; the control component outputs a driving signal according to control information, the control information includes sensing matching information, including the relationship between the motion state of the movable part relative to the fixed part and the motion sensing signal; correction information for correcting the sensing matching information; a preset position, When the structure is started, it is used to define the state of the movable part relative to the fixed part; the preset motion range defines the maximum motion range of the movable part relative to the fixed part; the first limit information is used to limit the minimum value of the drive signal; in a high temperature environment, the current or voltage required for the temperature of the drive component to rise to the phase change temperature is defined as the first limit information; in a high temperature environment, the minimum current or voltage required for the drive component to generate a pulling force greater than 0 Newton is defined as the first limit information; in a high temperature environment, the minimum current or voltage required to move the movable part to the preset position is defined as the first limit information; the second limit information is used to limit the maximum value of the drive signal; in a low temperature environment, the shape change of the drive component is less than or equal to the limit change The maximum current or voltage when the shape change rate is less than or equal to the limit change rate is defined as the second limit information, and the limit change rate is defined as the maximum value of the change rate of the drive component when the drive component is ready to undergo plastic deformation; in a low temperature environment, the maximum current or voltage when the shape change rate is less than or equal to the limit change rate is defined as the second limit information, and the limit change rate is defined as the maximum value of the change rate of the drive component when the drive component is deformed; after the drive component is used a specific number of times, the maximum current or voltage when the change in the preset motion range is less than a certain proportion is defined as the second limit information; the temperature of the high temperature environment is higher than that of the low temperature environment; the preset startup information is used to determine the preset value of the drive signal when the optical element drive mechanism is started. Set value; temperature compensation information, used to correct the influence of ambient temperature on the position sensing component and the driving component; inertia compensation information, including the relationship between the inertial sensing signal and the driving signal, the motion sensing signal or the image signal; high-frequency filtering information, the control component removes the high-frequency signal from the motion sensing signal, the inertial sensing signal and the driving signal according to the high-frequency filtering information; the high-frequency signal range defined by the high-frequency filtering information is at least greater than 10,000 Hz; the high-frequency filtering information is defined according to the maximum frequency of the optical element driving mechanism; the image signal is generated by a photosensitive element; the driving signal includes a first group of signals, wherein the first group of signals includes: a first signal; and a second signal having a different frequency from the first signal.

[0006] In some embodiments, the control information also includes a correction process, which includes: completing the assembly of the optical element driving mechanism; using an external device to measure and record the relationship between the movement status of the movable part relative to the fixed part and the motion sensing signal; updating the sensing matching information and redefining the preset start information and preset position; and calculating and analyzing the sensing matching information to obtain a compensation calculation formula, and recording the compensation calculation formula in the correction information.

[0007] In some embodiments, when the control component activates the driving component, the control component outputs a driving signal to the driving component for activation according to the temperature sensing signal, the temperature compensation information, the motion sensing signal, and the preset activation information.

[0008] In some embodiments, when the control component outputs the driving signal to control the driving component, the signal strength of the driving signal is at least greater than the signal strength of the first limit information and less than the signal strength of the second limit information.

[0009] In some embodiments, the control component adjusts the first signal or the second signal according to the temperature sensing signal and the temperature compensation information. The frequency of the second signal is less than 10000 Hz.

[0010] In some embodiments, the amplitude of the second signal is greater than the amplitude of the first signal.

[0011] In some embodiments, the driving component further includes a second driving component, the material of the second driving component includes a shape memory alloy, and when the control component outputs a driving signal, the direction of the driving force generated by the first driving component is different from the direction of the driving force generated by the second driving component; the driving signal further includes a second group of signals, the first group of signals is input to the first driving component, and the second group of signals is input to the second driving component, the power of the first group of signals and the second group of signals are different, and the control information further includes proportional information for recording the relative relationship between the first group of signals and the second group of signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following is a detailed description of embodiments of the present invention with reference to the accompanying drawings. It should be noted that, in accordance with standard practice in the art, various features are not shown to scale and are provided for illustrative purposes only. In fact, the dimensions of the elements may be arbitrarily increased or decreased to clearly illustrate the features of the present invention.

[0013] Figure 1A is a schematic diagram of an optical element driving mechanism according to some embodiments of the present invention.

[0014] Figure 1B It is a schematic diagram of the optical element driving mechanism.

[0015] Figure 2 This is an exploded diagram of the optical element drive mechanism.

[0016] Figure 3 It is a top view of the optical element drive mechanism.

[0017] Figure 4A as well as Figure 4B Along Figure 3 The line segment AA' and the line segment BB' show the cross-sectional view.

[0018] Figure 4C It is a side view of the optical element drive mechanism when viewed from the Y direction.

[0019] Figure 5 yes Figure 1B Magnified view of the middle region R1.

[0020] Figure 6 yes Figure 3 Magnified view of region R2.

[0021] Figure 7 This is a schematic diagram of the optical element drive mechanism when viewed in the X direction.

[0022] Figure 8A 、 Figure 8B 、 Figure 8C A schematic diagram of the optical element drive mechanism in operation.

[0023] Figure 9A Schematic diagram of an optical element driving mechanism according to some embodiments of the present invention.

[0024] Figure 9B This is a schematic diagram of the optical element drive mechanism without the top shell.

[0025] Figure 9C This is a top view of the optical element drive mechanism with the top shell omitted.

[0026] Figure 9D It is a side view of the optical element drive mechanism without the top shell.

[0027] Figure 10A 、 Figure 10B 、 Figure 10C 、 Figure 10D This is a schematic diagram of the second movable part, the third movable part, and the fourth movable part of the optical element driving mechanism in operation.

[0028] Figure 11A Schematic diagram of an optical element driving mechanism according to some embodiments of the present invention.

[0029] Figure 11B This is a schematic diagram of the optical element drive mechanism without the top shell.

[0030] Figure 11C This is a top view of the optical element drive mechanism with the top shell omitted.

[0031] Figure 12 is a schematic diagram of an optical element driving system according to some embodiments of the present invention.

[0032] Figure 13A It is a schematic diagram of the driving signal.

[0033] Figure 13B is a schematic diagram of temperature compensation information.

[0034] Figure 13C It is a schematic diagram of the driving signal.

[0035] Figure 14 It is a flow chart of the calibration process.

[0036] Figure 15A is a schematic diagram of an optical element driving mechanism according to some embodiments of the present invention.

[0037] Figure 15B is a schematic diagram of an optical element driving system according to some embodiments of the present invention.

[0038] Figure 16A It is a schematic diagram of the driving signal.

[0039] Figure 16B is a schematic diagram of temperature compensation information.

[0040] Figure 16C It is a schematic diagram of the driving signal.

[0041] Figure 17 It is a flow chart of the calibration process. DETAILED DESCRIPTION

[0042] The following discloses many different implementation methods or examples for implementing the different features of the subject matter provided. Specific embodiments of the components and their arrangements are described below to illustrate the present invention. Of course, these embodiments are for illustration only and should not be used to limit the scope of the present invention. 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.

[0043] 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 invention and do not represent a specific relationship between the different embodiments and / or structures discussed. In addition, in the present invention, 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.

[0044] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning 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 art and the present invention, and should not be interpreted in an idealized or overly formal manner unless otherwise defined herein.

[0045] 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 any previous ordinal number of the claimed element, nor does it represent the order of one claimed element and another claimed element or the order in the manufacturing method. The use of such ordinal numbers is only used to clearly distinguish a claimed element with a certain name from another claimed element with the same name.

[0046] Furthermore, in some embodiments of the present invention, terms such as "connected" and "interconnected," unless otherwise specified, may refer to direct contact between two structures, or may refer to non-direct contact between two structures, with another structure positioned between the two structures. Furthermore, such terms may include situations where both structures are movable or both structures are fixed.

[0047] Figure 1A 1 is a schematic diagram illustrating an optical element driving mechanism 100 according to some embodiments of the present invention. The optical element driving mechanism 100 includes a top housing 110, a base 120, and other components disposed between the top housing 110 and the base 120. The top housing 110 has an opening 112 for allowing light to pass through the opening 112 and enter the optical element driving mechanism 100.

[0048] Figure 1Bis a schematic diagram of the optical element driving mechanism 100 with the top housing 110 omitted. Figure 2 is an exploded view of the optical element driving mechanism 100, Figure 3 is a top view of the optical element driving mechanism 100 with the top case 110 omitted. Figure 4A as well as Figure 4B Along Figure 3 The cross-sectional view is shown along line segments AA' and BB'. In addition to the top housing 110 and the base 120, the optical element driving mechanism 100 may further include a sidewall 130, a first movable portion 140, a first connecting element 151, a first driving assembly 152, a second movable portion 160, a second connecting element 171, a second driving assembly 172, a third movable portion 180, a third connecting element 191, and a third driving assembly 192.

[0049] The side wall 130 may be disposed on the base 120, and the top case 110, the base 120, and the side wall 130 may be collectively referred to as a fixed portion F, which is used to protect other components disposed therein. In some embodiments, a circuit (not shown) may be embedded in the fixed portion F (e.g., the side wall 130) to electrically connect to other external components, such as a control component 430 ( Figure 12 ) to control the optical element driving mechanism 100. In some embodiments, the material of the fixing portion F may include plastic to electrically insulate the circuit to avoid short circuit.

[0050] The first movable portion 140 is movably disposed on the fixed portion F for connecting a first optical element (not shown). The first optical element may be disposed in a through hole of the first movable portion 140 and may have a main axis O, for example, extending in the X direction. Figure 4A As shown, a first guide component 155 may be provided between the base 120 and the first movable portion 140 , for example, partially disposed in the groove 122 of the base 120 and the groove 143 of the first movable portion 140 .

[0051] In some embodiments, the first guide element 155 may have a spherical shape, and the first movable portion 140 may be moved relative to the fixed portion F via the first guide element 155. In other words, the first guide element 155 may be used to guide the movement of the first movable portion 140 relative to the fixed portion F, for example, to limit the range of motion of the first movable portion 140. However, the shape of the first guide element 155 is not limited to this; a first guide element 155 having a hemispherical shape, a rod shape, or a groove shape may also be used to guide the first movable portion 140. Furthermore, the first movable portion 140 may further include a stopper 141 and a stopper 142 extending from the first movable portion 140 toward the top case 110 to limit the range of motion of the first movable portion 140 in the Z direction.

[0052] The first connecting element 151 can be arranged on the first movable part 140, for example, fixed to the first movable part 140 by gluing or the like. Then, the first connecting element 151 can be connected to the fixed part F (for example, the side wall 130) through the first driving component 152. In some embodiments, the first driving component 152 includes driving elements 152A, 152B, 152C, and 152D. The material of the first driving component 152 may include shape memory alloy (Shape memory alloy) and have a long strip shape. Shape memory alloy is an alloy material that can completely eliminate its deformation at a lower temperature after heating and restore its original shape before deformation. For example, when a shape memory alloy is subjected to a limited plastic deformation below the phase transition temperature, it can be restored to its original shape before deformation by heating.

[0053] In some embodiments, when a signal (e.g., voltage or current) is applied to the driving elements 152A, 152B, 152C, and 152D, the thermal effect of the current increases the temperature, thereby reducing the length of the driving elements 152A, 152B, 152C, and 152D. Conversely, if a weaker signal is applied, the heating rate is slower than the heat dissipation rate of the environment, which can reduce the temperature and thereby increase the length of the driving elements 152A, 152B, 152C, and 152D. In this manner, the first driving component 152 can drive the first movable portion 140 to move relative to the fixed portion F. For example, the first driving component 152 can drive the first movable portion 140 to rotate about a first rotation axis (e.g., an axis parallel to the Z axis) or to move along a direction perpendicular to the main axis O.

[0054] In some embodiments, the driving elements 152A, 152B, 152C, and 152D may be located on the same virtual plane (not shown), such as a plane with a normal vector in the Z direction, so as to control the direction of the force applied by the first driving component 152 to the first movable portion 140 on the XY plane.

[0055] In some embodiments, the driving elements 152A, 152B, 152C, and 152D each apply forces in different directions to the first movable portion 140. In some embodiments, the forces applied by the driving elements 152A and 152D are in substantially opposite directions, while the forces applied by the driving elements 152B and 152C are in substantially opposite directions. Furthermore, in some embodiments, the combined force applied by the driving elements 152A and 152B on the first movable portion 140 is directed toward the -X direction, while the combined force applied by the driving elements 152C and 152D on the first movable portion 140 is directed toward the X direction. Thus, by controlling the driving elements 152A, 152B, 152C, and 152D, the position of the first movable portion 140 in the X direction can be controlled.

[0056] Furthermore, in some embodiments, the combined force applied by the driving elements 152A and 152C to the first movable portion 140 is directed in the Y direction, while the combined force applied by the driving elements 152B and 152D to the first movable portion 140 is directed in the -Y direction. Thus, by controlling the driving elements 152A, 152B, 152C, and 152D, the position of the first movable portion 140 in the Y direction can also be controlled. In other words, the first driving element 152 can be used to control the position of the first movable portion 140 to achieve autofocus or optical image stabilization functions.

[0057] The driving elements 152A, 152B, 152C, and 152D are connected to the fixing portion F through the electrical connection elements 156A, 156B, 156C, and 156D respectively provided on the side wall 130. In addition, the electrical connection elements 156A, 156B, 156C, and 156D can be electrically connected to the circuit (not shown) embedded in the side wall 130, thereby allowing the driving elements 152A, 152B, 152C, and 152D to provide electrical signals respectively to control the first driving component 152. In addition, the first connecting element 151 can be electrically connected to the contact portion 154 through the elastic element 153. The elastic element 153 can be made of metal, for example, to elastically connect the first connecting element 151 and the contact portion 154. In some embodiments, as Figure 3 As shown, when viewed from the Z direction, the first driving component 152 and the elastic element 153 do not overlap each other. This can reduce the probability of a short circuit between the first driving component 152 and the elastic element 153, thereby increasing safety.

[0058] In some embodiments, the contact portion 154 may be disposed on the sidewall 130 and may be used for grounding or electrical connection to other components. In other words, the driving components 152A, 152B, 152C, and 152D may be connected in parallel, or different signals may be provided to the driving components 152A, 152B, 152C, and 152D to control the driving components 152A, 152B, 152C, and 152D separately.

[0059] In some embodiments, the electrical connection elements 156A, 156B, 156C, and 156D are at least partially exposed from the fixing portion F and may be partially embedded in the fixing portion F, depending on design requirements. Furthermore, the driving elements 152A, 152B, 152C, and 152D may be respectively sandwiched between the electrical connection elements 156A, 156B, 156C, and 156D, for example, directly contacting the electrical connection elements 156A, 156B, 156C, and 156D.

[0060] The second movable portion 160 may be disposed on the fixed portion F and may be used to connect a second optical element (not shown). For example, the second optical element may be disposed in a through hole of the second movable portion 160. Figure 4B As shown, the second movable portion 160 may be connected to the extension portion 132 of the side wall 130 via a second guide assembly 168 to be disposed on the extension portion 132. The extension portion 132 may extend from the side wall 130 toward the interior of the optical element driving mechanism 100 and may contact the base 120.

[0061] In some embodiments, the second guide element 168 may have a spherical shape, and the second movable portion 160 may be moved relative to the fixed portion F via the second guide element 168. In other words, the second guide element 168 may be used to guide the movement of the second movable portion 160 relative to the fixed portion F, for example, to limit the range of motion of the second movable portion 160. However, the shape of the second guide element 168 is not limited to this; a second guide element 168 having a rod-like or groove-like shape may also be used to guide the second movable portion 160.

[0062] In some embodiments, the second movable portion 160 may include a first portion 162, a second portion 164, and a connecting portion 166. The connecting portion 166 may be disposed between the first portion 162 and the second portion 164 to connect the first portion 162 and the second portion 164. Thus, the first portion 162 and the second portion 164 may be allowed to move in the same direction. In some embodiments, a second optical element may be disposed in the first portion 162, and a fourth optical element (not shown) may be disposed in the second portion 164.

[0063] The second connecting element 171 may include connecting units 171A and 171B and may be disposed on the second movable portion 160, for example, fixed to the second movable portion 160 by gluing or other methods. The second connecting element 171 may then be connected to the fixed portion F (e.g., the sidewall 130) via a second driving assembly 172. In some embodiments, the second driving assembly 172 includes driving elements 172A, 172B, 172C, and 172D. The second driving assembly 172 may be made of a shape memory alloy and have an elongated shape. Thus, the second driving assembly 172 can drive the second movable portion 160 to move relative to the fixed portion F or the first movable portion 140.

[0064] In some embodiments, driving element 172A, connecting element 171A, and driving element 172B are electrically connected in series. Furthermore, driving element 172C, connecting element 171B, and driving element 172D are electrically connected in series. In other words, driving elements 172A and 172B can be driven simultaneously, and driving elements 172C and 172D can be driven simultaneously. In some embodiments, the second movable portion 160 may include a raised portion 163 located between connecting elements 171A and 171B to separate connecting elements 171A and 171B and prevent a short circuit between connecting elements 171A and 171B.

[0065] In some embodiments, the driving elements 172A, 172B, 172C, and 172D each apply forces in different directions to the second movable portion 160. In some embodiments, the combined force applied by the driving elements 172A and 172B on the second movable portion 160 is directed toward the -X direction, while the combined force applied by the driving elements 172C and 172D on the second movable portion 160 is directed toward the X direction. Thus, by controlling the driving elements 172A, 172B, 172C, and 172D, the position of the second movable portion 160 in the X direction can be controlled.

[0066] Furthermore, in some embodiments, the component of the resultant force applied by the driving elements 172A and 172C to the second movable portion 160 on the Y-axis is oriented in the Y direction, while the component of the resultant force applied by the driving elements 172B and 172D to the second movable portion 160 on the Y-axis is oriented in the -Y direction. Thus, by controlling the driving elements 172A, 172B, 172C, and 172D, the position of the second movable portion 160 in the Y-direction can also be controlled. In other words, the second driving component 172 can be used to control the position of the second movable portion 160 to achieve the functions of autofocus or optical image stabilization. In some embodiments, such as Figure 3 As shown, when viewed from the Z direction, the elastic element 153 at least partially overlaps with the second driving component 172 (eg, driving elements 172A, 172B).

[0067] The driving components 172A, 172B, 172C, and 172D are connected to the fixing portion F via electrical connection components 173A, 173B, 173C, and 173D, respectively, disposed on the sidewall 130. In some embodiments, the electrical connection components 173A, 173B, 173C, and 173D are at least partially exposed from the fixing portion F and may be partially embedded within the fixing portion F, depending on design requirements. Furthermore, the driving components 172A, 172B, 172C, and 172D may be sandwiched between the electrical connection components 173A, 173B, 173C, and 173D, respectively, for example, directly contacting the electrical connection components 173A, 173B, 173C, and 173D.

[0068] The third movable portion 180 may be disposed on the second movable portion 160. For example, Figure 4B As shown, the third movable portion 180 can be connected to the second movable portion 160 via a third guide element 182 and can be used to position a third optical element (not shown). In some embodiments, the third guide element 182 can have a spherical shape, and the third movable portion 180 can be moved relative to the second movable portion 160 via the third guide element 182. In other words, the third guide element 182 can be used to guide the movement of the third movable portion 180 relative to the second movable portion 160, for example, to limit the range of motion of the third movable portion 180. However, the shape of the third guide element 182 is not limited to this; a third guide element 182 having a rod shape or a groove shape can also be used to guide the third movable portion 180.

[0069] The third connecting element 191 can be disposed on the third movable portion 180, for example, by gluing the third movable portion 180 to the third movable portion 180. The third connecting element 191 can then be connected to the second movable portion 160 via a third driving assembly 192. In some embodiments, the third driving assembly 192 includes driving elements 192A and 192B. The third driving assembly 192 can be made of a shape memory alloy and have an elongated shape. Thus, the third driving assembly 192 can drive the third movable portion 180 to move relative to the fixed portion F, the first movable portion 140, or the second movable portion 160. Furthermore, the combined force applied by the driving elements 192A and 192B to the third movable portion 180 can be in the X-direction, so the third driving assembly 192 can be used to drive the third movable portion 180 to move in the X-direction. The driving elements 192A and 192B can be electrically connected in series via the third connecting element 191.

[0070] In some embodiments, an additional elastic element (not shown) may be provided between the third movable portion 180 and the second movable portion 160 (or between the third movable portion 180 and the fixed portion F) to elastically connect the third movable portion 180 and the second movable portion 160 or the fixed portion F to provide a force toward the -X direction to the third movable portion 180 to control the position of the third movable portion 180 in the X direction. In some embodiments, as Figure 3 As shown, when viewed from the Z direction, the first driving assembly 152 and the third driving assembly 192 do not overlap. In this way, the size of the optical element driving mechanism 100 in the Z direction can be reduced, thereby achieving miniaturization.

[0071] In some embodiments, as Figure 4BAs shown, the side wall 130 may have a plurality of protrusions 133 extending in the Z direction, and in the X direction, the first drive assembly 152 and the third drive assembly 192 may be disposed between the plurality of protrusions 133. In the Z direction, the protrusions 133 and the top shell 110 ( Figure 4B The distance between the first and third driving components 152 and 192 is greater than the distance between the first and third driving components 152 and 192 and the top housing 110. This prevents direct collision between the first and third driving components 152 and 192 and the top housing 110, thereby increasing the durability of the optical element driving mechanism 100.

[0072] The driving components 192A and 192B are connected to the fixing portion F via electrical connection components 193A and 193B, respectively, disposed on the sidewall 130. In some embodiments, the electrical connection components 193A and 193B are at least partially exposed from the fixing portion F and may be partially embedded within the fixing portion F, depending on design requirements. Furthermore, the driving components 192A and 192B may be sandwiched between the electrical connection components 193A and 193B, respectively, for example, directly contacting the electrical connection components 193A and 193B.

[0073] Figure 4C FIG. 1 is a side view of the optical element driving mechanism 100 omitting the top shell 110 and the side wall 130 on one side, when viewed from the Y direction. Figure 4C As shown, the first driving assembly 152, the second driving assembly 172, and the third driving assembly 192 do not overlap with each other. This can reduce the size of the optical element driving mechanism 100 in the Y direction and achieve miniaturization.

[0074] Figure 5 yes Figure 1B An enlarged view of the middle region R1. Figure 5 As shown, the first connecting element 151 may include connecting portions 151A, 151B, 151C, and 151D having a bent shape, and the driving elements 152A, 152B, 152C, and 152D may be disposed in the connecting portions 151A, 151B, 151C, and 151D, respectively, for example, sandwiched between the connecting portions 151A, 151B, 151C, and 151D. Thus, the driving elements 152A, 152B, 152C, and 152D may be electrically connected to the first connecting element 151 via the connecting portions 151A, 151B, 151C, and 151D, respectively. In other words, the driving elements 152A, 152B, 152C, and 152D are also electrically connected to each other.

[0075] Figure 6 yes Figure 3 The enlarged view of the region R2. Figure 6As shown, when viewed from the Z direction, the second drive assembly 172 at least partially overlaps with the first drive assembly 152 and the third drive assembly 192. This can reduce the size of the optical element drive mechanism 100 in other directions. In addition, when viewed from the Z direction, the drive element 172A does not overlap with the drive element 172C, and the drive element 172B does not overlap with the drive element 172D ( Figure 3 ), can achieve miniaturization. In addition, if Figure 6 As shown, the portion of the driving assembly 172 sandwiched in the second connecting element 171 may be exposed from the second connecting element 171 .

[0076] Figure 7 Schematic diagram of the optical element driving mechanism 100 when viewed in the X direction. Figure 7 As shown, the fixing portion F has a rectangular shape and has a first side connected in sequence (such as Figure 7 The left side), the second side (such as Figure 7 The side of the upper side), the third side (such as Figure 7 In some embodiments, the first drive assembly 152 and the second drive assembly 172 are located on different sides of the fixing portion F.

[0077] For example, if Figure 7 As shown, the first drive assembly 152 is located on the second side, the second drive assembly 172 is located on the first side and the third side, and the third drive assembly 192 ( Figure 1B ) is located on the first side. The first side has a length L1, the second side has a length L2 (for example, the distance between the outer surface 130B of the left side wall 130 and the outer surface 130C of the right side wall 130 in the Y direction), and the third side has a length L3. The length L1 is substantially equal to the length L3 (for example, the distance between the bottom surface 120A of the base 120 and the top surface 130A of the side wall 130 in the Z direction), and the length L2 is greater than the length L1 and the length L3. In addition, as Figure 1B As shown, the third drive assembly 192 is also located on the second side. In other words, when viewed from the X-direction, the first drive assembly 152 and the second drive assembly 172 do not overlap, and the third drive assembly 192 and the second drive assembly 172 do not overlap, thereby reducing the size of the optical element driving mechanism 100 in the X-direction. Furthermore, since both the first drive assembly 152 and the third drive assembly 192 are located on the second side, that is, when viewed from the X-direction, the first drive assembly 152 and the third drive assembly 192 at least partially overlap. This reduces the size of the optical element driving mechanism 100 in other directions, achieving miniaturization.

[0078] Furthermore, in some embodiments, Figure 7As shown, driving element 172A may overlap with driving element 172C, and driving element 172B may overlap with driving element 172D. In other words, driving element 172A and driving element 172C may be located on a virtual plane (not shown), and driving element 172B and driving element 172D may be located on another virtual plane (not shown). These two virtual planes are different and parallel to the X-direction. Therefore, driving element 172A may be connected to the first movable portion 140 via connection point P1 and to the sidewall 130 of the fixed portion F via connection point P2. Driving element 172B may be connected to the first movable portion 140 via connection point P3 and to the sidewall 130 of the fixed portion F via connection point P4. In the Z-direction, there is a height difference H1 greater than zero between connection point P1 and connection point P2, and a second height difference H2 greater than zero between connection point P3 and connection point P4. In other words, the driving elements 172A, 172B (or driving elements 172C, 172D) have a component extending in the Z direction. In addition, in some embodiments, the driving elements 172A, 172B, 172C, 172D, 192A, 192B are not parallel to each other to increase the movable directions of the second movable portion 160 and the third movable portion 180.

[0079] In some embodiments, as Figure 1B 、 Figure 3 、 Figure 7 As shown, the optical element driving mechanism 100 may further include a position sensing element 134A and a magnetic sensing element 134B. The position sensing element 134A and the magnetic sensing element 134B may be collectively referred to as a position sensing assembly 134. The position sensing element 134A may be disposed on the fixed portion F (e.g., on the sidewall 130), while the magnetic sensing element 134B may be disposed on the first movable portion 140.

[0080] In some embodiments, the position sensing element 134A may include, for example, a Hall effect sensor, a magnetoresistance effect sensor (MR sensor), a giant magnetoresistance effect sensor (GMR sensor), a tunneling magnetoresistance effect sensor (TMR sensor), or a fluxgate sensor, and the sensing magnetic element 134B may be, for example, a magnet. For example, the position sensing element 134A may be used to sense the change in the magnetic field caused by the sensing magnetic element 134B moving along with the first movable portion 140 to obtain the position of the first movable portion 140. Although in Figure 7Only one position sensing element 134 is shown, but the present invention is not limited thereto. In some embodiments, a position sensing element corresponding to the second movable portion 160 or the third movable portion 180 may also be provided to obtain the position of the second movable portion 160 or the third movable portion 180.

[0081] like Figure 7 As shown, when viewed from the X-direction, the position sensing assembly 134 does not overlap with the first drive assembly 152, the second drive assembly 172, and the third drive assembly 192. This reduces the size of the optical element driving mechanism 100 in the X-direction, achieving miniaturization. Furthermore, in some embodiments, the stopper 141 and the stopper 142 may have the same height in the Z-direction, and the distance D1 between the top surface 140A of the first movable portion 140 and the top surface 141A of the stopper 141 may be greater than the distance D2 between the first drive assembly 152 and the top surface 140A. This prevents the first drive assembly 152 from colliding with the top housing 110 when the first movable portion 140 moves in the Z-direction. Instead, the stopper 141 or the stopper 142 limits the movable range of the first movable portion 140 in the Z-direction, protecting the first drive assembly 152 and increasing the durability of the optical element driving mechanism 100.

[0082] In some embodiments, as Figure 7 As shown, when viewed from the X direction, the second drive assembly 172 and the first drive assembly 152 are located on different sides of the fixed portion F, and the second drive assembly 172 and the third drive assembly 192 are located on different sides of the fixed portion F. In addition, the first guide assembly 155 and the first drive assembly 152 are located on different sides of the fixed portion F, the first guide assembly 155 and the second drive assembly 172 are located on different sides of the fixed portion F, and the first guide assembly 155 and the third drive assembly 192 are located on different sides of the fixed portion F. The second guide assembly 168 and the first drive assembly 152 are located on different sides of the fixed portion F, the second guide assembly 168 and the second drive assembly 172 are located on different sides of the fixed portion F, and the second guide assembly 168 and the third drive assembly 192 are located on different sides of the fixed portion F. In some embodiments, the third guide assembly 182 and the first drive assembly 152 are located on different sides of the fixed portion F, the third guide assembly 182 and the second drive assembly 172 are located on different sides of the fixed portion F, and the third guide assembly 182 and the third drive assembly 192 are located on different sides of the fixed portion F. In other words, Figure 7 As shown, when viewed from the X direction, the first guide assembly 155 does not overlap with the second guide assembly 168 , the second guide assembly 168 does not overlap with the third guide assembly 182 , and the third guide assembly 182 does not overlap with the first guide assembly 155 .

[0083] Figure 8A 、 Figure 8B 、 Figure 8C This is a schematic diagram of the second movable portion 160 and the third movable portion 180 of the optical element driving mechanism 100 in operation. In order to more clearly illustrate the relationship between the various components, the top shell 110 and the side wall 130 on one side are omitted. It should be noted that in the X direction, the third movable portion 180 is located within the second movable portion 160. Figure 8A as well as Figure 8B As shown, when the second movable portion 160 moves toward the X direction, it can drive the third movable portion 180 to move relative to the fixed portion F. Figure 8A as well as Figure 8C As shown, the third movable portion 180 can also move relative to the second movable portion 160, and the stroke or movable range of the second movable portion 160 relative to the fixed portion F is different from the stroke or movable range of the third movable portion 180 relative to the fixed portion F. In this way, the second optical element and the third optical element (not shown) disposed in the second movable portion 160 and the third movable portion 180 can be driven respectively to achieve a desired effect (e.g., focusing, adjusting depth of field, etc.).

[0084] By arranging the first movable portion 140, the second movable portion 160, and the third movable portion 180 on the principal axis O, the first optical element, the second optical element, and the third optical element (not shown) disposed therein can be aligned on the principal axis O. Furthermore, since the first movable portion 140, the second movable portion 160, and the third movable portion 180 can move in the direction of the principal axis O, functions such as autofocus and depth of field adjustment can be achieved, thereby improving the camera's imaging performance.

[0085] In some embodiments, additional optical elements may be provided in the optical element driving mechanism 100 to change the path of light. For example, an additional reflector or prism may be provided on the side of the first movable portion 140 away from the second movable portion 160 to change the path of light in other directions to be parallel to the principal axis O so as to enter the first, second, and third optical elements.

[0086] Figure 9A 2 is a schematic diagram illustrating an optical element driving mechanism 200 according to some embodiments of the present invention. The optical element driving mechanism 200 includes a top housing 210, a base 220, and other components disposed between the top housing 210 and the base 220. The top housing 210 has an opening 212 to allow light to pass through the opening 212 and enter the optical element driving mechanism 200.

[0087] Figure 9B is a schematic diagram of the optical element driving mechanism 200 omitting the top shell 210, and Figure 9C2 is a top view of the optical element driving mechanism 200, omitting the top housing 210. The structure of the optical element driving mechanism 200 is generally similar to that of the optical element driving mechanism 100, and similar components are not described again here. It should be noted that the optical element driving mechanism 200 uses a second movable portion 262 and a fourth movable portion 264 to replace the second movable portion 160 of the optical element driving mechanism 100, and uses a third movable portion 280 to replace the third movable portion 180 of the optical element driving mechanism 100. A fourth optical element (not shown) can be disposed in the fourth movable portion 264.

[0088] A fourth connecting element 294 may be provided on the fourth movable portion 264 and fixed to the fourth movable portion 264, for example, by gluing. The fourth connecting element 294 may then be connected to the sidewall 230 (fixed portion) via a fourth driving assembly 295. In some embodiments, the fourth driving assembly 295 includes driving elements 295A and 295B. The fourth driving assembly 295 may be made of a shape memory alloy and have an elongated shape. Thus, the fourth driving assembly 295 can drive the fourth movable portion 264 to move relative to the fixed portion, the first movable portion 140, the second movable portion 262, or the third movable portion 280. Furthermore, the combined force applied by the driving elements 295A and 295B to the fourth movable portion 264 may be directed in the X-direction, thereby driving the fourth movable portion 264 in the X-direction. The driving elements 295A and 295B may be electrically connected in series via the fourth connecting element 294.

[0089] In some embodiments, additional elastic elements 297A and 297B may be provided between the fourth movable portion 264 and the side wall 230 to elastically connect the fourth movable portion 264 and the side wall 230 to provide a force in the X direction to the fourth movable portion 264 to control the position of the fourth movable portion 264 in the X direction. Figure 9C As shown, when viewed from the Z direction, the first drive assembly 152 and the fourth drive assembly 295 do not overlap. This reduces the size of the optical element drive mechanism 200 in the Z direction, achieving miniaturization. In some embodiments, in the X direction, the elastic elements 297A and 297B at least partially overlap with the drive assembly 172.

[0090] Figure 9D FIG. 2 is a side view of the optical element driving mechanism 200 with the top housing 210 omitted. Figure 9DAs shown, the second movable part 262, the third movable part 280, and the fourth movable part 264 are separately arranged, and are respectively arranged on the extension part 232 of the side wall 230 through the second guide component 268, the third guide component 282, and the fourth guide component 269 to allow the second movable part 262, the third movable part 280, and the fourth movable part 264 to move separately, thereby achieving functions such as automatic focus, adjustment of depth of field, high magnification, etc., thereby improving the camera effect.

[0091] Figure 10A 、 Figure 10B 、 Figure 10C 、 Figure 10D This is a schematic diagram of the second movable portion 262, the third movable portion 280, and the fourth movable portion 264 of the optical element driving mechanism 200 in operation. In order to more clearly illustrate the relationship between the various components, the top shell 210 and the side wall 230 on one side are omitted. It should be noted that in the X direction, the third movable portion 280 is located between the second movable portion 262 and the fourth movable portion 264. Figure 10A as well as Figure 10B As shown, when the fourth movable portion 264 moves toward the X direction, the second movable portion 262 and the third movable portion 280 may not move along with the fourth movable portion 264. Figure 10B as well as Figure 10C As shown, when the third movable portion 280 moves toward the X direction, the second movable portion 262 and the fourth movable portion 264 may not move together with the third movable portion 280. Figure 10C as well as Figure 10D As shown, when the second movable portion 262 moves toward the X direction, the third movable portion 280 and the fourth movable portion 264 may not move together with the second movable portion 262 .

[0092] Thereby, the second optical element, the third optical element and the fourth optical element (not shown) arranged in the second movable part 262, the third movable part 280 and the fourth movable part 264 can be driven respectively, so as to achieve the desired effect (such as focusing, adjusting the depth of field, high magnification, etc.).

[0093] Figure 11A is a schematic diagram illustrating an optical element driving mechanism 300 according to some embodiments of the present invention. The optical element driving mechanism 300 includes a top housing 310, a base 320, and other components disposed between the top housing 310 and the base 320. The top housing 310 has an opening 312 for allowing light to pass through the opening 312 and enter the optical element driving mechanism 300.

[0094] Figure 11B is a schematic diagram of the optical element driving mechanism 300 omitting the top shell 310, and Figure 11CThis is a top view of the optical element driving mechanism 300, omitting the top housing 310. The structure of the optical element driving mechanism 300 is generally similar to that of the optical element driving mechanism 100, and similar components are not described again here. It should be noted that the optical element driving mechanism 300 uses a second movable portion 362 and a fixed support 364 to replace the second movable portion 160 of the optical element driving mechanism 100, and uses a third movable portion 380 to replace the third movable portion 180 of the optical element driving mechanism 100.

[0095] The fixed support member 364 is fixed to the extension portion 332 of the side wall 330 and may include a fourth optical element (not shown). The fourth optical element may be a special lens, such as a glass lens, or may have low dispersion or light filtering capabilities. When the second movable portion 362 or the third movable portion 380 moves relative to the base 320, the fixed support member 364 does not move with the base 320 to meet design requirements. In addition, the fixed support member 364 may also be used to limit the range of motion of the second movable portion 362 or the third movable portion 380.

[0096] Figure 12 1 is a schematic diagram of an optical element driving system 1 according to some embodiments of the present invention. In addition to the aforementioned optical element driving mechanism 100, the optical element driving system 1 further includes an inertial sensing component 410, a temperature sensing component 420, and a control component 430. Figure 12 As shown, the inertial sensing component 410 is used to sense the motion of the optical element driving mechanism 100 and output an inertial sensing signal 411 to the control component 430. The inertial sensing component 410 may include, for example, a gyroscope, an accelerometer, an angular velocity meter, or a gravity direction sensor to sense the inertia of the optical element driving mechanism 100. The temperature sensing component 420 is used to sense the temperature of the optical element driving mechanism 100 and output a temperature sensing signal 421 to the control component 430. The control component 430 is used to output a driving signal 431 to the driving component D (the first driving component 152, the second driving component 172, or the third driving component 192) of the optical element driving mechanism 100 to control the driving component D of the optical element driving mechanism 100. In addition, the position sensing component 134 of the optical element driving mechanism 100 also outputs a motion sensing signal 441 to the control component 430.

[0097] After receiving the aforementioned inertial sensing signal 411, temperature sensing signal 421, and motion sensing signal 441, the control component 430 determines the output drive signal 431 based on control information. The control information may be a combination of multiple pieces of information stored in the control component 430, allowing the control component 430 to effectively control the optical element driving mechanism 100 under various conditions.

[0098] In some embodiments, the control information may include sensing matching information, which may include the relationship between the motion status (e.g., travel distance) of the movable portion M (including the first movable portion 140, the second movable portion 160, or the third movable portion 180) relative to the fixed portion F and the motion sensing signal 441. For example, the electromagnetic signal sensed by the position sensing component 134 may be matched with the distance the movable portion M has moved relative to the fixed portion F. Furthermore, in some embodiments, the control information may also include correction information for correcting the sensing matching information. For example, linearity compensation may be performed on the sensing matching information to make the sensing matching information more closely aligned with the actual motion status of the movable portion M relative to the fixed portion F.

[0099] In some embodiments, the control information may include a preset position of the movable portion M relative to the fixed portion F, which may be used to define the state of the movable portion M relative to the fixed portion F when the optical element driving mechanism 100 is activated. For example, the movable portion M (e.g., the first movable portion 140, the second movable portion 160, or the third movable portion 180) may be allowed to be located at a center position or an initial position.

[0100] In some embodiments, the control information may include a preset range of motion for the movable portion M, and the movable portion M should move relative to the fixed portion F within the preset range of motion. In other words, the maximum range of motion of the movable portion M relative to the fixed portion F can be defined as the preset range of motion to prevent the movable portion M from being damaged by excessive movement.

[0101] Figure 13A is a schematic diagram of a drive signal 431. In some embodiments, the control information may include first limit information 432 for defining a minimum value of the drive signal 431, and second limit information 433 for defining a maximum value of the drive signal 431. In other words, the range of the drive signal 431 is defined between the first limit information 432 and the second limit information 433. The first limit information 432 may be defined as the minimum signal strength required to be provided to the optical element drive mechanism 100 when the optical element drive mechanism 100 is stable.

[0102] like Figure 13AAs shown, the first limit information 432 can be determined by multiple limit information 432A, 432B, and 432C. For example, the limit information 432A, 432B, and 432C can be the minimum signal strength (such as voltage or current) required for the temperature of the first drive component 152, the second drive component 172, or the third drive component 192 comprising a shape memory alloy to rise to the phase change temperature in a high temperature environment (such as about 60 degrees Celsius), the minimum signal strength (such as voltage or current) required for the first drive component 152, the second drive component 172, or the third drive component 192 comprising a shape memory alloy to generate a tension greater than zero in a high temperature environment (such as about 60 degrees Celsius), or the minimum signal strength (such as voltage or current) required for the movable part M to move to a predetermined position in a high temperature environment (such as about 60 degrees Celsius). Limit information 432A, 432B, or 432C can be selected as the first limit information 432 according to design requirements. In addition, Figure 13A This is only an example of the signal strength of the limit information 432A, 432B, and 432C, and the present invention is not limited thereto. The signal strength of the limit information 432A, 432B, and 432C may be changed according to actual conditions.

[0103] The second limit information 433 can be defined as the maximum value of the signal strength that the optical element driving mechanism 100 can withstand. If the strength of the driving signal 431 exceeds the second limit information 433, the driving component D (the first driving component 152, the second driving component 172 or the third driving component 192) may be damaged. Figure 13A As shown, the second limit information 433 may be determined by a plurality of limit information 433A, 433B, and 433C.

[0104] For example, limit information 433A may be the maximum signal strength (e.g., voltage or current) when the shape change of the first drive element 152, the second drive element 172, or the third drive element 192, which includes a shape memory alloy, is less than or equal to a limit change in a low temperature environment (e.g., approximately -30 degrees Celsius). This limit change can be defined as the maximum value of the change in plastic deformation that is expected to occur when the first drive element 152, the second drive element 172, or the third drive element 192 is deformed. In other words, if the deformation of the first drive element 152, the second drive element 172, or the third drive element 192 exceeds this limit change, plastic deformation will occur.

[0105] For example, limit information 433B may be the maximum signal strength (e.g., voltage or current) when the rate of change of the first drive component 152, the second drive component 172, or the third drive component 192, which includes a shape memory alloy, is less than or equal to a limiting rate of change in a low-temperature environment (e.g., approximately -30 degrees Celsius). This limiting rate of change may be defined as the maximum rate of change at which plastic deformation is about to occur when the first drive component 152, the second drive component 172, or the third drive component 192 is deformed. In other words, if the rate of change of the first drive component 152, the second drive component 172, or the third drive component 192 exceeds this limiting rate of change, plastic deformation will occur. The temperature of a high-temperature environment is higher than that of a low-temperature environment.

[0106] For example, the limit information 433C may be the maximum signal strength (e.g., voltage or current) when the change in the preset motion range is less than a proportion (e.g., 5%) or less than a change value (e.g., 10 μm) after the first drive component 152, the second drive component 172, or the third drive component 192 has been used a certain number of times (e.g., 30,000 times).

[0107] Although the aforementioned limit information 433C is shown as being higher than the limit information 433B, and the aforementioned limit information 433B is shown as being higher than the limit information 433A, the present invention is not limited thereto. For example, the values ​​of the limit information 433A, the limit information 433B, and the limit information 433C may vary according to actual conditions. Figure 13A Only one of these conditions is shown.

[0108] In some embodiments, the control information may include preset startup information for determining a preset value of the drive signal 431 when the optical element driving mechanism 100 is started, so as to avoid the control component 430 providing an excessively high or excessively low drive signal 431 to the optical element driving mechanism 100 when the optical element driving mechanism 100 is started.

[0109] In some embodiments, the control information may include temperature compensation information to correct for the effects of ambient temperature on the position sensing component 134 and the driver component D (first driver component 152, second driver component 172, or third driver component 192). Because both the temperature sensing component 420 and the driver component D are affected by temperature under varying ambient temperatures, the temperature compensation information may be used to correct for this effect.

[0110] For example, Figure 13BThe figure shows a temperature matching relationship 434 (including temperature matching relationships 434A, 434B, and 434C) and temperature correction information 435 (including temperature correction information 435A, 435B, and 435C). Temperature matching relationships 434A, 434B, and 434C respectively represent the relationship between the travel of the movable portion M and the signal strength of the driving component D at different ambient temperatures. In some embodiments, the ambient temperature of temperature matching relationship 434A is higher than that of temperature matching relationship 434B, and the ambient temperature of temperature matching relationship 434B is higher than that of temperature matching relationship 434C. For example, at the ambient temperature of temperature matching relationship 434A, a lower signal strength is required to enable the movable portion M to reach a specific travel distance compared to the ambient temperature of temperature matching relationship 434B.

[0111] In some embodiments, linearity compensation can be performed on temperature matching relationship 434 to obtain temperature correction information 435 (including temperature correction information 435A, 435B, and 435C). Temperature correction information 435 can be recorded in the temperature compensation information to simplify the control method through a linear parameter relationship. Thus, when the ambient temperature changes, the temperature compensation information can be used to compensate for the impact of the ambient temperature change on the driving component D. In some embodiments, the impact of temperature can also be corrected based on the motion sensing signal 441, rather than using the temperature compensation information, depending on design requirements.

[0112] In some embodiments, the control information may include inertia compensation information. The inertia compensation information may include the relationship between the inertia sensing signal 411 and the drive signal 431, the motion sensing signal 441, or the image signal. The image signal may be a signal provided by a photosensitive element (not shown) in the optical element drive mechanism 100, i.e., image information obtained by the optical element in the optical element drive mechanism 100. The inertia compensation information can be used to compensate for the effects of different inertia environments on the optical element drive system 1 (e.g., different movement speeds, rotation angles, etc.).

[0113] In some embodiments, the control information may include high-frequency filtering information. Control component 430 removes high-frequency signals from inertial sensing signal 411, temperature sensing signal 421, drive signal 431, and motion sensing signal 441 based on the high-frequency filtering information. For example, the high-frequency signal may be a signal with a frequency greater than 10,000 Hz, or the highest frequency at which optical element drive mechanism 100 can move, to filter out excessively high-frequency noise. This prevents interference with components within optical element drive system 1.

[0114] Figure 13Cis a schematic diagram of a driving signal 431. In some embodiments, the driving signal 431 may include a first set of signals, which may include a first signal 431A and a second signal 431B. The first signal 431A may be a DC signal (e.g., a signal with a frequency of zero), and the second signal 431B may be an AC signal or a periodic signal (e.g., a signal with a frequency not equal to zero). In other words, the frequencies of the first signal 431A and the second signal 431B are different. The first set of signals of the driving signal 431 may be a superimposed signal of the first signal 431A and the second signal 431B. Thus, by controlling the first signal 431A and the second signal 431B, the magnitude and frequency of the driving signal 431 may be controlled.

[0115] In some embodiments, the optical element driving mechanism 100 may include a stabilizing element (such as the aforementioned elastic element 153) for applying a predetermined force to the movable portion M. While the elastic element 153 is used as the stabilizing element in this embodiment, the present invention is not limited thereto. For example, a combination of magnetic elements may be used to provide a magnetic force to the movable portion M, so that the movable portion M is subjected to a predetermined force even when not in operation, depending on design requirements. This can stabilize the movable portion M, for example, by confining it to a specific range to prevent collision with other components.

[0116] In some embodiments, the control information may be calibrated through a calibration process 500 . Figure 14 is a block diagram of the calibration process 500. First, the calibration process 500 includes step 501 of completing the assembly of the optical element driving mechanism 100.

[0117] After step 501, the calibration process 500 further includes step 502 of measuring and recording the relationship between the motion of the movable portion M relative to the fixed portion F and the motion sensing signal 441 using an external device. In step 502, it is determined whether the motion sensing signal 441 accurately reflects the motion relationship of the movable portion M relative to the fixed portion F.

[0118] After step 502, the calibration process 500 further includes step 503, which updates the sensing match information and redefines the preset activation information and preset position. Because an external device is used in step 502 to confirm the motion relationship of the movable portion M relative to the fixed portion F, more accurate sensing match information can be obtained, which can then be used to redefine the preset activation information and preset position. In some embodiments, step 503 may also include confirming whether the movable portion M can move within the preset range of motion relative to the fixed portion F.

[0119] After step 503, the calibration process 500 further includes calculating and analyzing the sensing matching information to obtain a compensation formula and recording the compensation formula in the correction information in step 504. In this way, the control component 430 can compensate the sensed signal according to the compensation formula.

[0120] In some embodiments, when the control component 430 activates the aforementioned driving component D, the control component 430 may output a driving signal 431 to the driving component D to activate the driving component D (e.g., the first driving component 152, the second driving component 172, or the third driving component 192) based on the temperature sensing signal 421, the temperature compensation information, the motion sensing signal 441, and the preset activation information. When the control component 430 outputs the driving signal 431 to control the driving component D, the signal strength of the driving signal 431 is at least greater than the signal strength of the first limit information 432 and less than the signal strength of the second limit information 433, thereby ensuring that the driving component D can operate normally and is not damaged.

[0121] In some embodiments, when vibration compensation is performed on the movable part M by the driving component D, the control component 430 may output the driving signal 431 based on the inertial sensing signal 411, the motion sensing signal 441, and the inertial compensation information. In some embodiments, the control component 430 may adjust the first signal 431A or the second signal 431B based on the temperature sensing signal 421 and the temperature compensation information. In some embodiments, the control component 430 may adjust the second signal 431B based on the temperature sensing signal 421 and the temperature compensation information, and the frequency of the second signal 431B is greater than the frequency of the first signal 431A. In some embodiments, the frequency of the second signal 431B may be less than 10,000 Hz to effectively drive the driving component D. In addition, as Figure 13C As shown, the amplitude of the second signal 431B may be greater than the amplitude of the first signal 431A.

[0122] In some embodiments, the drive signal 431 may include a second set of signals. The first set of signals may be input to, for example, one of the first drive component 152, the second drive component 172, or the third drive component 192, while the second set of signals may be input to another of the first drive component 152, the second drive component 172, or the third drive component 192. Furthermore, the control information may include ratio information to record the relative relationship between the first and second sets of signals. For example, the ratio of the total power of the first signal to the total power of the second signal may be included to provide different signal intensities to different drive components. In some embodiments, a third set of signals may also be provided to enable separate control of each drive component.

[0123] Figure 15AFIG2 is a schematic diagram illustrating an optical element driving mechanism 100' according to some embodiments of the present invention. Optical element driving mechanism 100' is substantially similar to optical element driving mechanism 100, differing in that optical element driving mechanism 100' does not include the aforementioned position sensing element 134. This reduces the number of required components, achieving miniaturization and lowering manufacturing costs.

[0124] Figure 15B FIG15 is a schematic diagram illustrating an optical element drive system 2 according to some embodiments of the present invention. In addition to the aforementioned optical element drive mechanism 100', the optical element drive system 2 further includes an inertial sensing component 610, a temperature sensing component 620, and a control component 630. As shown in FIG15 , the inertial sensing component 610 is used to sense the motion of the optical element drive mechanism 100' and output an inertial sensing signal 611 to the control component 630. The inertial sensing component 610 may include, for example, a gyroscope, an accelerometer, an angular velocity meter, or a gravity direction sensor to sense the inertia of the optical element drive mechanism 100'. The temperature sensing component 620 is used to sense the temperature of the optical element drive mechanism 100' and output a temperature sensing signal 621 to the control component 630. The control component 630 is used to output a drive signal 631 to the drive component D (the first drive component 152, the second drive component 172, or the third drive component 192) of the optical element drive mechanism 100' to control the drive component D of the optical element drive mechanism 100'. In some embodiments, the inertial sensing signal 611 includes a gravity direction signal, which is used to provide the direction of gravity to the control component 630. In some embodiments, the optical element driving mechanism 100' may further include a photosensitive element (not shown), and the temperature sensing component 620 may be disposed near the photosensitive element. For example, the distance between the temperature sensing component 620 and the photosensitive element may be less than approximately 15 mm to simplify circuit design.

[0125] After receiving the aforementioned inertial sensing signal 611 and temperature sensing signal 621, the control component 630 determines the output drive signal 631 based on a control message. The control message can be a combination of multiple pieces of information stored in the control component 630, allowing the control component 630 to effectively control the optical element driving mechanism 100' under various conditions.

[0126] In some embodiments, the control information may include posture correction information corresponding to the inertial sensing signal 611, which is used to correct the drive signal 631. For example, after receiving the aforementioned gravity direction signal, the control component can compensate for the influence of the gravity direction based on the posture correction information. In some embodiments, an external device (not shown) disposed outside the optical element drive system 2 measures the position of the movable portion M relative to the fixed portion F under different gravity directions to define the aforementioned posture correction information. For example, multiple measurements can be performed using the external device and compared with theoretically calculated values, thereby increasing the accuracy of the obtained posture correction information.

[0127] In some embodiments, the control information may include a preset position of the movable portion M relative to the fixed portion F, which can be used to define the relative state of the movable portion M relative to the fixed portion F when the optical element driving mechanism 100' is activated. For example, the movable portion M (e.g., the first movable portion 140, the second movable portion 160, or the third movable portion 180) can be allowed to be located at a center position or an initial position.

[0128] In some embodiments, the control information may include a preset range of motion for the movable portion M, and the movable portion M should move relative to the fixed portion F within the preset range of motion. In other words, the maximum range of motion of the movable portion M relative to the fixed portion F can be defined as the preset range of motion to prevent the movable portion M from being damaged by excessive movement.

[0129] Figure 16A is a schematic diagram of a drive signal 631. In some embodiments, the control information may include first limit information 632 for defining a minimum value of the drive signal 631 and second limit information 633 for defining a maximum value of the drive signal 631. In other words, the range of the drive signal 631 is defined between the first limit information 632 and the second limit information 633. The first limit information 632 may be defined as the minimum signal strength required to be provided to the optical element drive mechanism 100' when the optical element drive mechanism 100' is stable.

[0130] like Figure 16AAs shown, the first limit information 632 can be determined by multiple limit information 632A, 632B, and 632C. For example, the limit information 632A, 632B, and 632C can be the minimum signal strength (such as voltage or current) required for the temperature of the first drive component 152, the second drive component 172, or the third drive component 192 comprising a shape memory alloy to rise to the phase change temperature in a high temperature environment (such as approximately 60 degrees Celsius), the minimum signal strength (such as voltage or current) required for the first drive component 152, the second drive component 172, or the third drive component 192 comprising a shape memory alloy to generate a tension greater than zero in a high temperature environment (such as approximately 60 degrees Celsius), or the minimum signal strength (such as voltage or current) required for the movable part M to move to a predetermined position in a high temperature environment (such as approximately 60 degrees Celsius). Limit information 632A, 632B, or 632C can be selected as the first limit information 632 according to design requirements. In addition, Figure 16A This is only an example of the signal strength of the limit information 632A, 632B, and 632C, and the present invention is not limited thereto. The signal strength of the limit information 632A, 632B, and 632C may be changed according to actual conditions.

[0131] The second limit information 633 can be defined as the maximum value of the signal strength that the optical element driving mechanism 100' can withstand. If the strength of the driving signal 631 exceeds the second limit information 633, the driving component D (the first driving component 152, the second driving component 172 or the third driving component 192) may be damaged. Figure 16A As shown, the second limit information 633 may be determined by a plurality of limit information 633A, 633B, and 633C.

[0132] For example, limit information 633A may be the maximum signal strength (e.g., voltage or current) when the shape change of the first drive element 152, the second drive element 172, or the third drive element 192, which includes a shape memory alloy, is less than or equal to a limit change in a low temperature environment (e.g., approximately -30 degrees Celsius). This limit change can be defined as the maximum value of the change in plastic deformation that is expected to occur when the first drive element 152, the second drive element 172, or the third drive element 192 is deformed. In other words, if the deformation of the first drive element 152, the second drive element 172, or the third drive element 192 exceeds this limit change, plastic deformation will occur.

[0133] For example, limit information 633B may be the maximum signal strength (e.g., voltage or current) when the rate of change of the first drive component 152, the second drive component 172, or the third drive component 192, which includes a shape memory alloy, is less than or equal to a limiting rate of change in a low-temperature environment (e.g., approximately -30 degrees Celsius). This limiting rate of change may be defined as the maximum rate of change at which plastic deformation is about to occur when the first drive component 152, the second drive component 172, or the third drive component 192 is deformed. In other words, if the rate of change of the first drive component 152, the second drive component 172, or the third drive component 192 exceeds this limiting rate of change, plastic deformation will occur. The temperature of a high-temperature environment is higher than that of a low-temperature environment.

[0134] For example, the limit information 633C may be the maximum signal strength (e.g., voltage or current) when the change in the preset motion range is less than a proportion (e.g., 5%) or less than a change value (e.g., 10 μm) after the first drive component 152, the second drive component 172, or the third drive component 192 has been used a certain number of times (e.g., 30,000 times).

[0135] Although the aforementioned limit information 633C is shown as being higher than the limit information 633B, and the aforementioned limit information 633B is shown as being higher than the limit information 633A, the present invention is not limited thereto. For example, the values ​​of the limit information 633A, the limit information 633B, and the limit information 633C may vary according to actual conditions. Figure 16A Only one of these conditions is shown.

[0136] In some embodiments, the control information may include preset startup information for determining a preset value of the driving signal 631 when the optical element driving mechanism 100' is started, so as to prevent the control component 630 from providing an excessively high or excessively low driving signal 631 to the optical element driving mechanism 100' when the optical element driving mechanism 100' is started.

[0137] In some embodiments, the control information may include temperature compensation information to correct for the effects of ambient temperature on the position sensing element (e.g., position sensing element 134 in the aforementioned embodiment, not shown in this embodiment) and the driving element D (first driving element 152, second driving element 172, or third driving element 192) in the optical element driving mechanism 100. Because both the temperature sensing element 620 and the driving element D are affected by temperature under varying ambient temperatures, the temperature compensation information can be used to correct for this effect.

[0138] For example, Figure 16BThe figure shows a temperature matching relationship 634 (including temperature matching relationships 634A, 634B, and 634C) and temperature correction information 635 (including temperature correction information 635A, 635B, and 635C). Temperature matching relationships 634A, 634B, and 634C respectively represent the relationship between the travel of the movable portion M and the signal strength of the driving component D at different ambient temperatures. In some embodiments, the ambient temperature of temperature matching relationship 634A is higher than that of temperature matching relationship 634B, and the ambient temperature of temperature matching relationship 634B is higher than that of temperature matching relationship 634C. For example, at the ambient temperature of temperature matching relationship 634A, a lower temperature is required to achieve a specific travel of the movable portion M compared to the ambient temperature of temperature matching relationship 634B.

[0139] In some embodiments, linearity compensation can be performed on the temperature matching relationship 634 to obtain temperature correction information 635 (including temperature correction information 635A, 635B, and 635C). Temperature correction information 635 is recorded in the temperature compensation information to simplify the control method through a linear parameter relationship. Thus, when the ambient temperature changes, the temperature compensation information can be used to compensate for the impact of the ambient temperature change on the driving component D.

[0140] In some embodiments, the control information may include inertia compensation information. The inertia compensation information may include the relationship between the inertia sensing signal 611 and the drive signal 631 or image signal. The image signal may be a signal provided by a photosensitive element (not shown) in the optical element drive mechanism 100', i.e., image information obtained by the optical element in the optical element drive mechanism 100'. The inertia compensation information can be used to compensate for the effects of environments with different inertias on the optical element drive system 2 (e.g., different movement speeds, rotation angles, etc.).

[0141] In some embodiments, the control information may include high-frequency filtering information. The control component 630 removes high-frequency signals from the inertial sensing signal 611, the temperature sensing signal 621, and the drive signal 631 based on the high-frequency filtering information. For example, the high-frequency signal may be a signal with a frequency greater than 10,000 Hz, or the highest frequency at which the optical element drive mechanism 100' can move, to filter out excessively high-frequency noise. This prevents interference with components in the optical element drive system 2.

[0142] Figure 16Cis a schematic diagram of a driving signal 631. In some embodiments, the driving signal 631 may include a first set of signals, which may include a first signal 631A and a second signal 631B. The first signal 631A may be a DC signal (e.g., a signal with a frequency of zero), and the second signal 631B may be an AC signal or a periodic signal (e.g., a signal with a frequency not equal to zero). In other words, the first signal 631A and the second signal 631B have different frequencies. The first set of signals of the driving signal 631 may be a superimposed signal of the first signal 631A and the second signal 631B. Thus, by controlling the first signal 631A and the second signal 631B, the magnitude and frequency of the driving signal 631 may be controlled.

[0143] In some embodiments, the optical element driving mechanism 100' may include a stabilizing element (such as the aforementioned elastic element 153) for applying a predetermined force to the movable portion M. While the elastic element 153 is used as the stabilizing element in this embodiment, the present invention is not limited thereto. For example, a combination of magnetic elements may be used to provide a magnetic force to the movable portion M, so that the movable portion M is subjected to a predetermined force even when not in operation, depending on design requirements. This can stabilize the movable portion M, for example, by confining it to a specific range to prevent collision with other components.

[0144] In some embodiments, when the control component 630 activates the aforementioned drive component D, the control component 630 may output a drive signal 631 to the drive component D to activate the drive component (e.g., the first drive component 152, the second drive component 172, or the third drive component 192) based on the temperature sensing signal 621, the temperature compensation information, the inertia sensing signal 611 (e.g., the gravity direction signal), the inertia compensation information, the posture correction information, and the preset activation information. When the control component 630 outputs the drive signal 631 to control the drive component, the signal strength of the drive signal 631 is at least greater than the signal strength of the first limit information 632 and less than the signal strength of the second limit information 633 to ensure that the drive component D can operate normally and is not damaged. Alternatively, in some embodiments, when the control component 630 activates the aforementioned drive component D, the control component 630 receives a target signal output by another external component. For example, if the optical element drive system 2 is installed in an electronic device, the target signal can be output to the control component 630 from the central processing unit of the electronic device. Next, the control component 630 outputs a driving signal 631 to the optical element driving mechanism 100 ′ according to the temperature sensing signal 621 , the temperature compensation information, the inertia sensing signal 611 (eg, the gravity direction signal), the inertia compensation information, the posture correction information, and the target signal.

[0145] In some embodiments, when vibration compensation is performed on the movable part M by the driving component D, the control component 630 may output the driving signal 631 based on the inertia sensing signal 611, the inertia compensation information, and the temperature compensation information. In some embodiments, the control component 630 may adjust the first signal 631A or the second signal 631B based on the temperature sensing signal 621 and the temperature compensation information. In some embodiments, the control component 630 may adjust the second signal 631B based on the temperature sensing signal 621 and the temperature compensation information, and the frequency of the second signal 631B is greater than the frequency of the first signal 631A. In some embodiments, the frequency of the second signal 631B may be less than 10,000 Hz to effectively drive the driving component D. In addition, as Figure 16C As shown, the amplitude of the second signal 631B may be greater than the amplitude of the first signal 631A.

[0146] In some embodiments, the drive signal 631 may include a second set of signals. The first set of signals may be input to, for example, one of the first drive component 152, the second drive component 172, or the third drive component 192, while the second set of signals may be input to another of the first drive component 152, the second drive component 172, or the third drive component 192. Furthermore, the control information may include ratio information to record the relative relationship between the first and second sets of signals. For example, the ratio of the total power of the first and second signals may be included to provide signals of varying strengths to different drive components. In some embodiments, a third set of signals may also be provided to enable separate control of each drive component.

[0147] The following describes the calibration process 700 for obtaining the temperature matching relationship 634 and the temperature correction information 635 . Figure 17 is a block diagram of the calibration process 700. The calibration process 700 starts from step 701. In step 701, the optical element driving mechanism 100' is assembled.

[0148] In step 702, an external device (not shown) may be used to measure the motion of the movable portion M relative to the fixed portion F (e.g., travel, Figure 16B Y axis in FIG) and the driving signal 631 (eg, signal strength, Figure 16B The temperature matching relationship 634A (first temperature matching relationship) is calculated by comparing the relationship between the temperature matching relationship 634A and the temperature compensation information. The temperature matching relationship 634A is then recorded in the temperature compensation information. Next, in step 703, the temperature matching relationship 634A is analyzed, for example, by performing linearity compensation on the temperature matching relationship 634A to obtain temperature correction information 635A (first temperature correction information). The temperature correction information 635A is then recorded in the temperature compensation information.

[0149] In step 704, an external device can be used to measure the relationship between the motion of the movable portion M relative to the fixed portion F and the drive signal 631 at the second ambient temperature to obtain a temperature matching relationship 634B (a second temperature matching relationship). This temperature matching relationship 634B is then recorded in the temperature compensation information. Next, in step 705, the temperature matching relationship 634B can be analyzed, for example, by performing linearity compensation on the temperature matching relationship 634B to obtain temperature correction information 635B (a second temperature correction information). The temperature correction information 635B can then be recorded in the temperature compensation information.

[0150] In step 706, the relationship between the motion of the movable part M relative to the fixed part F and the drive signal 631 can be measured by an external device under the third ambient temperature to obtain a temperature matching relationship 634C (third temperature matching relationship), and the temperature matching relationship 634C is recorded in the temperature compensation information. Then, in step 707, the temperature matching relationship 634C can be analyzed, for example, linear compensation can be performed on the temperature matching relationship 634C to obtain temperature correction information 635C (third temperature correction information). Then, the temperature correction information 635C can be recorded in the temperature compensation information. It should be noted that the aforementioned first ambient temperature, second ambient temperature, and third ambient temperature are different temperatures. Figure 16B For example, the first ambient temperature is greater than the second ambient temperature, and the second ambient temperature is greater than the third ambient temperature, but the present invention is not limited thereto.

[0151] In summary, the present invention provides an optical element driving system. The optical element driving system includes an optical element driving mechanism and a control component. The optical element driving mechanism includes a movable part, a fixed part, a driving component and a position sensing component. The movable part is used to connect the optical element. The movable part can move relative to the fixed part, and the movable part is located in the accommodating space of the fixed part. The driving component is used to drive the movable part to move relative to the fixed part. The control component outputs a driving signal to the driving component to control the driving component. The position sensing component is used to sense the movement of the movable part relative to the fixed part and output a motion sensing signal to the control component. In this way, the driving component can be effectively controlled and miniaturization can be achieved. In addition, control information including multiple information can be used to increase the accuracy when controlling the optical element driving mechanism.

[0152] Although the embodiments of the present invention and their advantages have been disclosed above, it should be understood that any person skilled in the art may make changes, substitutions and modifications without departing from the spirit and scope of the present invention. In addition, the scope of protection of the present invention is not limited to the processes, machines, manufactures, material compositions, devices, methods and steps in the specific embodiments described in the specification, and any person skilled in the art may understand from the disclosure of the present invention that the processes, machines, manufactures, material compositions, devices, methods and steps currently or in the future developed can be used in accordance with the present invention as long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein. Therefore, the scope of protection of the present invention includes the above-mentioned processes, machines, manufactures, material compositions, devices, methods and steps. In addition, each claim constitutes a separate embodiment, and the scope of protection of the present invention also includes the combination of each claim and embodiment.

Claims

1. An optical element driving system, characterized in that: include: An optical element driving mechanism, comprising: a movable portion for connecting to an optical element; a fixed portion, the movable portion being movable relative to the fixed portion, and the movable portion being located in a receiving space of the fixed portion; a driving assembly for driving the movable portion to move relative to the fixed portion; and a position sensing component; a control component that outputs a driving signal to the driving component for controlling the driving component, wherein the position sensing component is used to sense the movement of the movable portion relative to the fixed portion and output a motion sensing signal to the control component; and an inertia sensing component for sensing the motion of the optical element driving mechanism and outputting an inertia sensing signal to the control component; The control component outputs the driving signal according to control information, and the control information includes: a sensing matching information, including a relationship between the motion status of the movable portion relative to the fixed portion and the motion sensing signal; A correction information, used to correct the sensing matching information; a preset position for defining a state of the movable portion relative to the fixed portion when the optical element driving mechanism is activated; a preset range of motion, defining a maximum range of motion of the movable portion relative to the fixed portion; a first limit information for limiting the minimum value of the driving signal; a second limit information for limiting the maximum value of the driving signal; A preset activation information for determining a preset value of the driving signal when the optical element driving mechanism is activated; Temperature compensation information for correcting the influence of ambient temperature on the position sensing component and the driving component; Inertia compensation information, including a relationship between the inertia sensing signal and the driving signal, the motion sensing signal, or an image signal; and A high-frequency filtering information is provided, and the control component removes a high-frequency signal from the motion sensing signal, the inertia sensing signal, and the driving signal according to the high-frequency filtering information.

2. The optical element driving system according to claim 1, wherein: Also includes: a stabilizing component for applying a preset force to the movable portion; a temperature sensing component for sensing the temperature of the optical element driving mechanism and outputting a temperature sensing signal to the control component; The driving assembly comprises a first driving assembly, wherein the material of the first driving assembly comprises a shape memory alloy; In a high-temperature environment, the current or voltage required for the temperature of the driving component to rise to the phase transition temperature is defined as the first limit information; or The first limit information is defined as the minimum current or voltage required for the driving component to generate a pulling force greater than 0 Newton in the high temperature environment, wherein the high temperature environment is 60 degrees Celsius; or In the high temperature environment, the minimum current or voltage that causes the movable portion to move to the preset position is defined as the first limit information; In a low temperature environment, the maximum current or voltage when the shape change of the driving component is less than or equal to a limit change is defined as the second limit information, and the limit change is defined as the maximum value of the change of the driving component when the driving component is deformed and is ready to undergo plastic deformation, wherein the low temperature environment is -30 degrees Celsius; or In the low-temperature environment, the maximum current or voltage when the shape change rate of the driving component is less than or equal to a limiting change rate is defined as the second limit information, and the limiting change rate is defined as the maximum value of the change rate of the driving component when the driving component is deformed and the driving component is ready to undergo plastic deformation; or After the driving component is used a specific number of times, the maximum current or voltage at which the change in the preset motion range is less than a certain percentage is defined as the second limit information; The temperature of the high temperature environment is higher than that of the low temperature environment; The frequency of the high-frequency signal defined by the high-frequency filtering information is at least greater than 10000 Hz; The high-frequency filtering information is defined according to the maximum frequency at which the optical element driving mechanism can move; The image signal is generated by a photosensitive element; The driving signal includes a first group of signals, wherein the first group of signals includes: a first signal; as well as A second signal has a frequency different from that of the first signal.

3. The optical element driving system according to claim 2, wherein: The control information also includes a correction process, which includes: completing the assembly of the optical element driving mechanism; Using an external device to measure and record the relationship between the motion of the movable portion relative to the fixed portion and the motion sensing signal; updating the sensing matching information and redefining the preset activation information and the preset position; and The sensing matching information is calculated and analyzed to obtain a compensation calculation formula, and the compensation calculation formula is recorded in the correction information.

4. The optical element driving system according to claim 3, wherein: The control component outputs the driving signal to the driving component for activation according to the temperature sensing signal, the temperature compensation information, the motion sensing signal and the preset activation information; When the control component outputs the driving signal to control the driving component, the signal strength of the driving signal is at least greater than the signal strength of the first limit information and less than the signal strength of the second limit information; When performing vibration compensation, the control component outputs the driving signal according to the inertia compensation information, the motion sensing signal, and the inertia compensation signal; The control component adjusts the first signal or the second signal according to the temperature sensing signal and the temperature compensation information; The control component adjusts the second signal according to the temperature sensing signal and the temperature compensation information, wherein the frequency of the second signal is greater than the frequency of the first signal and is less than 10000 Hz; The amplitude of the second signal is greater than the amplitude of the first signal; The driving component further includes a second driving component, the material of the second driving component includes a shape memory alloy, and when the control component outputs the driving signal, the direction of the driving force generated by the first driving component is different from the direction of the driving force generated by the second driving component; The driving signal also includes a second group of signals. The first group of signals is input to the first driving component, and the second group of signals is input to the second driving component. The first group of signals and the second group of signals have different powers, and the control information also includes ratio information for recording the relative relationship between the first group of signals and the second group of signals.

5. An optical element driving system, characterized in that: include: An optical element driving mechanism, comprising: a movable portion for connecting to an optical element; a fixed portion, the movable portion being movable relative to the fixed portion, and the movable portion being located in a receiving space of the fixed portion; a driving assembly for driving the movable portion to move relative to the fixed portion, comprising a first driving assembly, wherein the material of the first driving assembly comprises a shape memory alloy; a control component for controlling the driving component; and an inertial sensing component for sensing the motion of the optical element driving mechanism and outputting an inertial sensing signal to the control component, wherein the inertial sensing signal includes a gravity direction signal; The control component outputs a driving signal according to a control information, and the control information includes: a posture correction information corresponding to the inertial sensing signal and used to correct a relationship between the motion of the movable portion relative to the fixed portion and the driving signal, wherein the posture correction information is defined by a state of the movable portion relative to the fixed portion under different gravitational directions measured by an external device; a preset position for defining a relative state of the movable portion relative to the fixed portion when the optical element driving mechanism is activated; a preset range of motion, defining a maximum range of motion of the movable portion relative to the fixed portion; a first limit information for limiting the minimum value of the driving signal; a second limit information for limiting the maximum value of the driving signal; A preset activation information for determining a preset value of the driving signal when the optical element driving mechanism is activated; Temperature compensation information, used to correct the effect of ambient temperature on the driving component; Inertia compensation information, including a relationship between the inertia sensing signal and the driving signal or an image signal; and A high-frequency filtering information is provided, and the control component removes the high-frequency signal from the inertial sensing signal and the driving signal according to the high-frequency filtering information.

6. The optical element driving system according to claim 5, wherein: Also includes: a stabilizing component for applying a preset force to the movable portion; a temperature sensing component for sensing the temperature of the optical element driving mechanism and outputting a temperature sensing signal to the control component; The temperature sensing component is adjacent to a photosensitive element; The material of the first driving component includes shape memory alloy; In a high temperature environment, the current or voltage required for the temperature of the driving component to rise to the phase transition temperature is defined as the first limit information, wherein the high temperature environment is 60 degrees Celsius; or In the high temperature environment, the minimum current or voltage required for the driving component to generate a pulling force greater than 0 Newton is defined as the first limit information; or In the high temperature environment, the minimum current or voltage that causes the movable portion to move to the preset position is defined as the first limit information; In a low-temperature environment, the maximum current or voltage when the shape change of the driving component is less than or equal to a limit change is defined as the second limit information, and the limit change is defined as the maximum change of the driving component when the driving component is deformed and the driving component is ready to undergo plastic deformation, wherein the low-temperature environment is -30 degrees Celsius; or In the low-temperature environment, the maximum current or voltage when the shape change rate of the driving component is less than or equal to a limiting change rate is defined as the second limit information, and the limiting change rate is defined as the maximum value of the change rate of the driving component when the driving component is deformed and the driving component is ready to undergo plastic deformation; or After the driving component is used a specific number of times, the maximum current or voltage at which the change in the preset motion range is less than a certain percentage is defined as the second limit information; The temperature of the high temperature environment is higher than that of the low temperature environment; The high-frequency signal range defined by the high-frequency filtering information is at least greater than 10,000 Hz; The high-frequency filtering information is defined according to the highest frequency of the optical element driving mechanism; The image signal is generated by the photosensitive element; The driving signal includes a first group of signals, wherein the first group of signals includes: a first signal; as well as A second signal has a frequency different from that of the first signal.

7. The optical element driving system according to claim 6, wherein: The control information also includes a correction process, which includes: completing the assembly of the optical element driving mechanism; At a first ambient temperature, measuring, with the external device, a relationship between a motion state of the movable portion relative to the fixed portion and the driving signal to obtain a first temperature matching relationship and record the relationship in the temperature compensation information; Analyzing the first temperature matching relationship to obtain first temperature correction information and recording the information in the temperature compensation information; At a second ambient temperature, measuring, with the external device, a relationship between a motion of the movable portion relative to the fixed portion and the driving signal to obtain a second temperature matching relationship, and recording the relationship in the temperature compensation information; Analyzing the second temperature matching relationship to obtain second temperature correction information and recording the information in the temperature compensation information; At a third ambient temperature, measuring, with the external device, a relationship between a motion of the movable portion relative to the fixed portion and the driving signal to obtain a third temperature matching relationship, and recording the relationship in the temperature compensation information; Analyzing the third temperature matching relationship to obtain third temperature correction information and recording the information in the temperature compensation information; The first ambient temperature, the second ambient temperature, and the third ambient temperature are different.

8. The optical element driving system according to claim 7, wherein: When the control component starts the driving component, the control component outputs the driving signal to the driving component for starting according to the temperature sensing signal, the temperature compensation information, the inertia sensing signal, the inertia compensation information and the preset starting information; When the control component outputs the driving signal to control the driving component, the signal strength of the driving signal is at least greater than the signal strength of the first limit information and less than the signal strength of the second limit information; When performing vibration compensation, the control component outputs the driving signal according to the inertia sensing signal, the inertia compensation information, and the temperature compensation information; The control component adjusts the first signal or the second signal according to the temperature sensing signal and the temperature compensation information; The control component adjusts the second signal according to the temperature sensing signal and the temperature compensation information, wherein the frequency of the second signal is greater than the frequency of the first signal and is less than 10000 Hz; The amplitude of the second signal is greater than the amplitude of the first signal; The driving component further includes a second driving component, the material of the second driving component includes a shape memory alloy, and when the control component outputs the driving signal, the direction of the driving force generated by the first driving component is different from the direction of the driving force generated by the second driving component; The driving signal also includes a second group of signals. The first group of signals is input to the first driving component, and the second group of signals is input to the second driving component. The first group of signals and the second group of signals have different powers, and the control information also includes ratio information for recording the relative relationship between the first group of signals and the second group of signals.

9. An optical element driving mechanism, characterized in that: include: a first movable portion for connecting to a first optical element, wherein the first optical element has a main axis extending in a first direction; a fixed portion, the first movable portion being movable relative to the fixed portion; a first driving assembly for driving the first movable portion to move relative to the fixed portion; a first guide assembly for guiding the movement of the first movable portion relative to the fixed portion; a second movable portion, configured to connect to a second optical element; a second driving assembly for driving the second movable portion to move relative to the fixed portion or the first movable portion; a second guide assembly, disposed between the second movable portion and the fixed portion, for guiding the movement of the second movable portion relative to the fixed portion; a third movable portion, configured to connect to a third optical element; a third driving assembly for driving the third movable portion to move relative to the fixed portion or the first movable portion, wherein the second movable portion drives the third movable portion to move together; a third guide assembly disposed between the second movable portion and the third movable portion, for guiding the movement of the second movable portion relative to the third movable portion, wherein the second movable portion and the third movable portion move in the first direction; as well as A first elastic element is disposed on the third movable portion and the fixed portion, and elastically connects the third movable portion and the fixed portion.

10. The optical element driving mechanism according to claim 9, wherein the first driving component comprises: a first driving element movably connected to the first movable portion and the fixed portion; a second driving element movably connected to the first movable portion and the fixed portion; a third driving element movably connected to the first movable portion and the fixed portion; as well as a fourth driving element movably connected to the first movable portion and the fixed portion, wherein the first driving element and the second driving element apply forces to the first movable portion in different directions, and the third driving element and the fourth driving element apply forces to the first movable portion in different directions; When viewed from the first direction, the first drive assembly and the second drive assembly do not overlap; When viewed from the first direction, the second drive assembly and the third drive assembly do not overlap; When viewed from the first direction, the first drive assembly and the third drive assembly at least partially overlap; When viewed from a second direction, the first drive component and the second drive component do not overlap; When viewed from the second direction, the first drive assembly and the third drive assembly do not overlap; When viewed from the second direction, the second drive assembly and the third drive assembly do not overlap; When viewed from a third direction, the first drive component and the third drive component do not overlap; When viewed from the third direction, the first drive assembly at least partially overlaps with the second drive assembly; When viewed from the third direction, the second drive assembly at least partially overlaps with the third drive assembly; The first direction, the second direction and the third direction are perpendicular to each other The first driving element and the third driving element exert forces on the first movable portion in different directions; The first driving element and the fourth driving element exert forces on the first movable portion in different directions; The second driving element and the third driving element exert forces on the first movable portion in different directions; The second driving element and the fourth driving element exert forces on the first movable portion in different directions; The first driving assembly can drive the first movable portion to rotate about a first rotation axis or move along a direction perpendicular to the main axis of the optical element, and the first driving element, the second driving element, the third driving element, and the fourth driving element can be controlled separately; The first driving element and the second driving element apply a first combined force to the first movable portion, and the third driving element and the fourth driving element apply a second combined force to the first movable portion, wherein the direction of the first combined force is opposite to the direction of the second combined force; The first driving element and the third driving element apply a third combined force to the first movable portion. The second driving element and the fourth driving element apply a fourth combined force to the first movable portion. The direction of the third combined force is opposite to that of the fourth combined force.

11. The optical element driving mechanism according to claim 10, wherein: The third driving assembly includes a fifth driving element and a sixth driving element, and the fifth driving element and the sixth driving element are electrically connected in series; wherein the first driving element, the second driving element, the third driving element, the fourth driving element, the fifth driving element, and the sixth driving element have linear shapes, and the first driving element, the second driving element, the third driving element, the fourth driving element, the fifth driving element, and the sixth driving element are not parallel to each other; The stroke of the second movable portion relative to the fixed portion is different from the stroke of the third movable portion relative to the fixed portion, and in the first direction, the third movable portion is located in the second movable portion; When viewed from the first direction, the fixing portion has a rectangular shape and has a first side, a second side, and a third side connected in sequence; wherein the first driving component is located on the second side, and the second driving component is located on the first side and the third side, wherein a length of the first side or a length of the third side is less than a length of the second side, wherein the optical element driving mechanism further comprises a position sensing component located on the first side, and when viewed from the first direction, the position sensing component does not overlap with the first driving component, the position sensing component does not overlap with the second driving component, and the position sensing component does not overlap with the third driving component; When viewed along the first direction, the second driving assembly and the first driving assembly are located on different sides of the fixing portion; When viewed along the first direction, the second driving assembly and the third driving assembly are located on different sides of the fixing portion; When viewed along the first direction, the third driving assembly is located on the second side; When viewed along the first direction, the first guide assembly and the first drive assembly are located on different sides of the fixing portion; When viewed along the first direction, the first guide assembly and the second drive assembly are located on different sides of the fixing portion; When viewed along the first direction, the first guide assembly and the third drive assembly are located on different sides of the fixing portion; When viewed along the first direction, the second guide assembly and the first drive assembly are located on different sides of the fixing portion; When viewed along the first direction, the second guide assembly and the second drive assembly are located on different sides of the fixing portion; When viewed along the first direction, the second guide assembly and the third drive assembly are located on different sides of the fixing portion; When viewed along the first direction, the second guide component is located on the first side; When viewed along the first direction, the third guide assembly and the first drive assembly are located on different sides of the fixing portion; When viewed along the first direction, the third guide assembly and the second drive assembly are located on different sides of the fixing portion; When viewed along the first direction, the third guide assembly and the third drive assembly are located on different sides of the fixing portion; When viewed along the first direction, the third guide component is located on the first side; When viewed along the first direction, the first guide component and the second guide component do not overlap; When viewed along the first direction, the second guide component and the third guide component do not overlap; When viewed along the first direction, the third guide component does not overlap with the first guide component.

12. The optical element driving mechanism according to claim 9, wherein: Also includes: a second elastic element, disposed on the second movable portion and the third movable portion, elastically connecting the second movable portion and the third movable portion; The first driving component includes: a first driving element movably connected to the first movable portion and the fixed portion; a second driving element movably connected to the first movable portion and the fixed portion; a third driving element movably connected to the first movable portion and the fixed portion; and A fourth driving element is movably connected to the first movable portion and the fixed portion, wherein the first driving element and the second driving element apply forces on the first movable portion in different directions, and the third driving element and the fourth driving element apply forces on the first movable portion in different directions.

13. The optical element driving mechanism according to claim 9, wherein: The first drive assembly includes: a first driving element movably connected to the first movable portion and the fixed portion; a second driving element movably connected to the first movable portion and the fixed portion; a third driving element movably connected to the first movable portion and the fixed portion; and a fourth driving element movably connected to the first movable portion and the fixed portion, wherein the first driving element and the second driving element apply forces to the first movable portion in different directions, and the third driving element and the fourth driving element apply forces to the first movable portion in different directions; The optical element driving mechanism further includes: a first connecting element; a second elastic element, wherein the first driving assembly is connected to the first movable portion via the first connecting element, the first connecting element is elastically connected to the fixed portion via the second elastic element, and when viewed from a second direction, the second elastic element and the first driving assembly do not overlap, and when viewed from a third direction, the first driving element and the third driving element do not overlap, and the first direction, the second direction, and the third direction are perpendicular to each other; wherein in the first direction, the second elastic element at least partially overlaps with the second driving assembly; wherein the first driving element, the second driving element, the third driving element, and the fourth driving element have a linear shape, and are located on a first virtual plane, the first driving element and the second driving element are electrically connected in series, and the third driving element and the fourth driving element are electrically connected in series; The first driving element is connected to the first movable part via a first connection point; The first driving element is connected to the fixing portion via a second connection point; The second driving element is connected to the first movable part via a third connection point; The second driving element is connected to the fixing portion via a fourth connection point; In a third direction, there is a first height difference between the first connection point and the second connection point that is greater than zero; In the third direction, there is a second height difference between the third connection point and the fourth connection point that is greater than zero; And the first direction is perpendicular to the third direction.

14. The optical element driving mechanism according to claim 9, wherein: The device further includes an electrical connection element disposed on the fixing portion, wherein the first driving component is electrically connected to a control element via the electrical connection element, the electrical connection element is at least partially exposed from the fixing portion or embedded in the fixing portion, the first driving component is clamped in the electrical connection element, a circuit is embedded in the fixing portion and electrically connected to the electrical connection element, and the fixing portion is made of plastic; The first movable portion includes a stopping portion extending in a third direction, and in the third direction, a height of the stopping portion is greater than a height of the first driving component.

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