TWI889113B - Imaging lens driving module and electronic device - Google Patents

Abstract

An imaging lens driving module includes an imaging lens assembly, a carrier element and a driving mechanism. The imaging lens assembly has an optical axis. The carrier element is for disposing the imaging lens assembly, and includes an assembling structure. The assembling structure is disposed on an outer surface of the carrier element, and extends along a direction away from the optical axis. The driving mechanism is for driving the carrier element moving along a direction parallel to the optical axis, and includes a coil pair and magnets. The coil pair is disposed on the assembling structure, and includes a bottom layer coil and a top layer coil. The bottom layer coil is entwined on the assembling structure, and is directly contact with the assembling structure. The top layer coil is stacked on and entwined on the bottom layer coil, the top layer coil is farther from the assembling structure than the bottom layer coil from the assembling structure, and the top layer coil overlaps the bottom layer coil along the direction parallel to the optical axis. Each of the magnets is correspondingly disposed on the coil pair. Therefore, the assembling structure wound via the same wire is favorable for reducing the cycle time of the product.

Description

Imaging lens drive module and electronic device

The present disclosure relates to an imaging lens drive module, and in particular to an imaging lens drive module applied to a portable electronic device.

In recent years, portable electronic devices have developed rapidly, such as smart electronic devices and tablet computers, which have become part of modern people's lives, and the imaging lens drive modules installed on portable electronic devices have also developed vigorously. However, as technology becomes more and more advanced, users have higher and higher requirements for the quality of imaging lens drive modules. Therefore, developing an imaging lens drive module that can improve production efficiency has become an important and urgent problem in the industry.

The present disclosure provides an imaging lens drive module and an electronic device, which can simplify the winding process by making the winding direction of a first coil consistent with the winding direction of a second coil, thereby reducing time cost.

According to an embodiment of the present disclosure, an imaging lens drive module is provided, comprising an imaging lens group, a carrier element and a drive mechanism. The imaging lens group has an optical axis. The carrier element is used to configure the imaging lens group and comprises an assembly structure. The assembly structure is disposed on the outer surface of the carrier element and extends in a direction away from the optical axis. The drive mechanism is used to drive the carrier element to move in a direction parallel to the optical axis and comprises at least one coil group, at least two magnets and at least one elastic element. The coil group is disposed on the assembly structure of the carrier element and comprises a first coil and a second coil. The first coil is disposed on the assembly structure of the carrier element. The second coil is disposed on the assembly structure of the carrier element and is disposed opposite to the first coil. The first coil and the second coil respectively include a bottom coil and a top coil. The bottom coil is wound around the assembly structure and physically contacts the assembly structure. The top coil is stacked and wound around the bottom coil, away from the assembly structure than the bottom coil, and overlaps with the bottom coil in a direction parallel to the optical axis. The magnets are respectively arranged corresponding to the coil groups. The elastic element is coupled to the carrier element. When viewed from the first coil toward the second coil, the winding direction of the first coil is the same as the winding direction of the second coil. The coil group of the driving mechanism is also composed of an assembly structure in which the bottom coil is wound around the carrier element toward the top coil.

According to the imaging lens driving module of the embodiment described in the previous paragraph, the first coil and the second coil can be formed by two wires, so that the first coil and the second coil are electrically separated.

According to the imaging lens driving module of the embodiment described in the previous paragraph, the elastic element may include a lower elastic element, and the lower elastic element is arranged on the image side of the imaging lens assembly.

In the imaging lens driving module according to the embodiment described in the preceding paragraph, the lower elastic element may include four elastic sheets electrically separated from each other.

According to the imaging lens driving module of the embodiment described in the previous paragraph, the elastic sheet can be electrically connected to a wire terminal and a wire end of the first coil and a wire terminal and a wire end of the second coil respectively.

According to an embodiment of the present disclosure, an electronic device is provided, comprising the imaging lens drive module of the aforementioned embodiment.

The present disclosure provides an imaging lens drive module, comprising an imaging lens assembly, a carrier element and a drive mechanism. The imaging lens assembly has an optical axis. The carrier element is used to configure the imaging lens assembly and comprises an assembly structure, wherein the assembly structure is disposed on the outer surface of the carrier element and extends in a direction away from the optical axis. The drive mechanism is used to drive the carrier element to move in a direction parallel to the optical axis and comprises at least one coil assembly and at least two magnets. The coil group is arranged on the assembly structure of the carrier element, and includes a bottom coil and a top coil, wherein the bottom coil is wound around the assembly structure and physically contacts the assembly structure; the top coil is stacked and wound on the bottom coil, farther from the assembly structure than the bottom coil, and overlaps with the bottom coil in a direction parallel to the optical axis. The magnets are arranged corresponding to the coil groups respectively. Specifically, the present invention is to wind the assembly structure with the same wire at the same time and in the same winding direction, thereby generating the coil groups arranged relatively. Therefore, compared with the coil assembly generated by the non-simultaneous winding assembly structure in the prior art, the imaging lens drive module of the present invention can save the product cycle time.

Specifically, the carrier element may be a coil holder, a lens carrier, or an element combining the functions of the two, but is not limited thereto. Furthermore, the magnets may interact with the coil assembly to generate a driving magnetic force, so that the driving mechanism drives the carrier element to move along a direction parallel to the optical axis.

The driving mechanism may further include at least one elastic element, and the elastic element is coupled to the carrier element. Specifically, the number of the elastic elements may be two, and may include an upper elastic element and a lower elastic element, wherein the upper elastic element is disposed on the object side of the imaging lens assembly, and the lower elastic element is disposed on the image side of the imaging lens assembly and is disposed opposite to the upper elastic element. In this way, the driving stroke range of the driving mechanism may be defined.

The coil assembly may have only two wire terminals, and the wire terminals are respectively arranged on the top coil. Specifically, the wire terminal may be the end area where the wire is wound around the carrier element, and the wire terminal may be in a disconnected form, and one end of the wire terminal is connected to the top coil, and the other end of the wire terminal is exposed to the air.

The wire terminal of the top coil can be electrically connected to the elastic element of the driving mechanism, wherein the electrical connection can be connected by welding or gluing, but is not limited thereto. In this way, the wire terminal can be electrically connected to other components to improve the design margin of the product station. Specifically, during the planning and design stage of the welding station or the gluing station, the execution order of the welding station or the gluing station can be adjusted relative to other stations.

The coil assembly of the driving mechanism may be composed of a wire assembly structure in which a bottom coil is wound around a carrier element toward a wire terminal of a top coil. Specifically, the bottom coil is composed of a wire, and the top coil has a wire terminal, so the coil assembly is composed of the same wire. By simultaneously winding the same wire to form a coil assembly, the manufacturing process can be reduced and the product cycle time can be reduced.

The carrier element may further include at least two columnar structures, wherein the columnar structures are disposed on the outer surface of the carrier element and extend along the parallel optical axis and toward the image side of the imaging lens assembly. Specifically, the columnar structures may be integrally formed with the carrier element, but the present invention is not limited thereto. By integrally forming the columnar structures with the carrier element, the assembly tolerance between the elements may be reduced.

The wire ends of the top coil can be wrapped around the columnar structure and physically contact the columnar structure. Specifically, the wire ends are wrapped around the columnar structure to provide the wire tension required for fixing the coil assembly. This can prevent the wire from loosening from the carrier component to improve the yield rate.

The lower elastic element may include an inner portion, an outer portion, and an elastic connection portion, wherein the inner portion is coupled to the carrier element, the outer portion is coupled to a base of the imaging lens drive module, and the elastic connection portion connects the inner portion and the outer portion. Thus, the lower elastic element may have a better coupling position to ensure the driving efficiency of the driving mechanism.

The wire terminal of the top coil can be electrically connected to the lower elastic element outside the outer part. Thereby, a better electrical connection area position can be provided, and it is helpful to miniaturize the imaging lens drive module.

The carrier element may further include at least one supporting portion, wherein the supporting portion and the assembly structure are alternately arranged along a circumferential direction surrounding the optical axis. Thereby, the space utilization rate in the imaging lens drive module can be improved.

The connecting wires of the coil assembly can be physically contacted with a dividing point of the supporting part of the carrier element. Through the dividing point, the automatic optical inspection process can be more accurate and faster, and the length of the wires constituting the coil assembly can be effectively controlled to reduce production costs.

Alternatively, the bottom coil of the coil assembly may only have two wire ends, wherein the coil assembly may further include a connecting wire, and the connecting wire connects the wire ends of the bottom coil to keep the bottom coil electrically connected. Specifically, the connecting wire may be a part of the wire segment of the coil assembly, but is not limited thereto. In this way, the feasibility of the coil assembly being composed of continuous wires can be provided.

The coil assembly may further include a first coil and a second coil, wherein the first coil is disposed on the assembly structure of the carrier element, and the second coil is disposed on the assembly structure of the carrier element and is disposed opposite to the first coil. Further, the first coil and the second coil may include a bottom coil and a top coil, respectively, and when viewed from the first coil toward the second coil, the winding direction of the first coil is the same as the winding direction of the second coil. Specifically, the same winding direction means the same clockwise direction or counterclockwise direction. The same winding direction can simplify the winding process, thereby reducing time costs.

The first coil and the second coil may be formed by two wires, so that the first coil and the second coil are electrically separated. Specifically, by winding different wires around the assembly structure to form the first coil and the second coil, two electrically separated first coils and second coils may be generated to adjust the tilt of the imaging lens assembly. In this way, the electrically separated first coil and second coil may be separately controlled to further optimize the imaging quality.

The lower elastic element may include four elastic sheets that are electrically separated from each other. Specifically, the elastic sheet is suitable for mass production and easy to assemble, and can effectively reduce the volume of the imaging lens drive module. Furthermore, the elastic sheet can be electrically connected to the wire terminals and wire ends of the first coil and the wire terminals and wire ends of the second coil respectively. In detail, the elastic sheet can be further electrically connected to the wire terminals of the top coil of the first coil, the wire ends of the bottom coil, and the wire terminals of the top coil of the second coil, and the wire ends of the bottom coil. Thereby, the elastic sheets can be kept electrically separated from each other, wherein the elastic sheets are divided into two sheets as a group and can be electrically connected to the first coil and the second coil respectively, so as to improve the accuracy of adjusting the tilt degree of the imaging lens group.

The coil set includes M coil sets and N wire terminals, which can satisfy the following conditions: N/2 = M; and 2 ≤ N ≤ 10. Thus, a suitable range of coil set numbers can be obtained.

The various technical features of the imaging lens drive module disclosed above can be combined and configured to achieve corresponding effects.

The present disclosure provides an electronic device, including the aforementioned imaging lens driving module.

According to the above implementation method, a specific implementation example is proposed below and described in detail with the help of drawings. <First implementation example>

FIG. 1A is an exploded schematic diagram of an imaging lens driving module 100 according to the first embodiment of the present invention, and FIG. 1B is another exploded schematic diagram of the imaging lens driving module 100 in the first embodiment of FIG. 1A. As can be seen from FIG. 1A and FIG. 1B, the imaging lens driving module 100 includes a housing 110, a pad 120, a driving mechanism (not shown), an imaging lens assembly 140, a carrier element 150, and a base 190, wherein the imaging lens assembly 140 has an optical axis X.

The carrier element 150 is used to configure the imaging lens set 140, and includes an assembly structure 151, at least two columnar structures 152 and at least one supporting portion 153, wherein the assembly structure 151 is disposed on the outer surface of the carrier element 150 and extends in a direction away from the optical axis X; the columnar structure 152 is disposed on the outer surface of the carrier element 150 and extends along a direction parallel to the optical axis X and toward the image side of the imaging lens set 140; the supporting portion 153 and the assembly structure 151 are alternately disposed along a circumferential direction surrounding the optical axis X. Specifically, the carrier element 150 can be a coil seat, a lens carrier, or an element combining the functions of the above two, and the columnar structure 152 can be integrally formed with the carrier element 150, but is not limited to the above. By integrally forming the columnar structure 152 and the carrier element 150, the assembly tolerance between the elements can be reduced. Furthermore, by alternately arranging the supporting portion 153 and the assembly structure 151 along the circumferential direction surrounding the optical axis X, the space utilization rate within the imaging lens drive module 100 can be improved.

The driving mechanism is used to drive the carrier element 150 to move along the direction parallel to the optical axis X, and includes at least one elastic element, at least one coil set 160 and at least two magnets 170. The elastic element is coupled to the carrier element 150, and the number of the elastic elements can be two, and includes an upper elastic element 130 and a lower elastic element 180, wherein the upper elastic element 130 is disposed on the object side of the imaging lens set 140, and the lower elastic element 180 is disposed on the image side of the imaging lens set 140, and is disposed opposite to the upper elastic element 130. In this way, the driving stroke range of the driving mechanism can be defined. The coil set 160 is disposed on the assembly structure 151 of the carrier element 150. The magnets 170 are respectively disposed corresponding to the coil assemblies 160 , and the magnets 170 can interact with the coil assemblies 160 to generate driving magnetic force, so that the driving mechanism drives the carrier element 150 to move along the direction parallel to the optical axis X. It is worth mentioning that the pad 120 can be used to adjust the relative position of the upper elastic element 130 to the housing 110 .

The lower elastic element 180 includes an inner portion 181, an outer portion 182, and an elastic connection portion 183, wherein the inner portion 181 is coupled to the carrier element 150, the outer portion 182 is coupled to the base 190 of the imaging lens driving module 100, and the elastic connection portion 183 connects the inner portion 181 and the outer portion 182. Thus, the lower elastic element 180 can have a better coupling position to ensure the driving efficiency of the driving mechanism.

Please refer to FIGS. 1C to 1L, wherein FIG. 1C is a partial schematic diagram of the imaging lens drive module 100 in the first embodiment of FIG. 1A, FIG. 1D is a schematic diagram of the object side of the carrier element 150 and the coil assembly 160 in the first embodiment of FIG. 1A, FIG. 1E is a schematic diagram of the image side of the carrier element 150 and the coil assembly 160 in the first embodiment of FIG. 1A, and FIGS. 1F to 1I are schematic diagrams of the first embodiment of FIG. FIG. 1A is a schematic side view of the carrier element 150 and the coil assembly 160 in the first embodiment, FIG. 1J is a schematic partial side view of the carrier element 150 and the coil assembly 160 in the first embodiment of FIG. 1A, FIG. 1K is a schematic diagram of the stacking and winding of the coil assembly 160 in the first embodiment of FIG. 1A, and FIG. 1L is a partially enlarged view of the carrier element 150 and the coil assembly 160 in the first embodiment of FIG. 1A. As can be seen from FIG. 1C to FIG. 1L, the coil assembly 160 includes a bottom coil 163 and a top coil 164. The bottom coil 163 is wound around the assembly structure 151 and is in physical contact with the assembly structure 151. The top coil 164 is stacked and wound on the bottom coil 163 in a stacking and winding direction D2, is farther from the assembly structure 151 than the bottom coil 163, and overlaps with the bottom coil 163 along a direction parallel to the optical axis X.

The coil assembly 160 has only two wire terminals 165, which are respectively disposed on the top coil 164, and the wire terminals 165 of the top coil 164 are electrically connected to the elastic element of the driving mechanism, wherein the electrical connection can be connected by welding or glue dispensing, but is not limited thereto. As can be seen from FIG. 1C, in the first embodiment, the wire terminals 165 of the top coil 164 are electrically connected to the lower elastic element 180 of the driving mechanism, and the wire terminals 165 of the top coil 164 are connected to the lower elastic element 180 by forming an electrical connection portion C by glue dispensing. Thereby, the wire terminal 165 can be electrically connected to other components to improve the design margin of the production station.

Specifically, the wire terminal 165 of the top coil 164 is electrically connected to the lower elastic element 180 outside the outer portion 182, that is, the wire terminal 165 of the top coil 164 is electrically connected to the inner portion 181 and the elastic connection portion 183 of the lower elastic element 180, but the present invention is not limited thereto. In this way, a better electrical connection area position can be achieved, and the miniaturization of the imaging lens drive module 100 is facilitated.

As can be seen from FIG. 1E, FIG. 1F and FIG. 1L, the coil assembly 160 of the driving mechanism can be composed of an assembly structure 151 in which a wire is wound around the carrier element 150 along the winding direction D1 from the bottom coil 163 to the wire terminal 165 of the top coil 164. Specifically, the bottom coil 163 is composed of a wire, and the top coil 164 has a wire terminal 165, so the coil assembly 160 is composed of the same wire. By winding the same wire to form the coil assembly 160, the manufacturing process can be reduced and the product cycle time can be reduced.

As can be seen from FIG. 1C and FIG. 1E , the wire terminals 165 of the top coil 164 can be respectively wrapped around the columnar structure 152 and physically contacted therewith. Specifically, the wire terminals 165 can be the end region (i.e., the columnar structure 152) where the wires are wrapped around the carrier element 150, and the wire terminals 165 can be in a disconnected form, and one wire terminal 165 of the top coil 164 is exposed to the air. The wire terminals 165 of the top coil 164 are wrapped around the columnar structure 152 to provide the wire tension required for fixing the coil assembly 160. In this way, the wires can be prevented from loosening from the carrier element 150 to improve the yield rate.

With reference to Figures 1M to 1R, Figure 1M is a schematic diagram of the carrier element 150 and the coil group 160 in the first embodiment of Figure 1A, Figures 1N and 1O are schematic diagrams of the coil group 160 in the first embodiment of Figure 1M, Figure 1P is another schematic diagram of the carrier element 150 and the coil group 160 in the first embodiment of Figure 1A, and Figures 1Q and 1R are schematic diagrams of the coil group 160 in the first embodiment of Figure 1P. As can be seen from FIG. 1L to FIG. 1R, the bottom coil 163 of the coil assembly 160 has only two wire ends 16x1, and the coil assembly 160 further includes a connecting wire 166, wherein the two wire ends 1631 of the connecting wire 166 are respectively connected to the wire ends 16x1 of the bottom coil 163, so that the bottom coil 163 maintains electrical connection.

Furthermore, the connecting wire 166 can be a part of the wire segment of the coil assembly 160, but is not limited thereto. Thus, the feasibility of the coil assembly 160 being composed of continuous wires can be provided.

The connecting wire 166 of the coil assembly 160 is in physical contact with a dividing point (not shown) of the supporting portion 153 of the carrier element 150. Through the dividing point, the automatic optical inspection process can be made more accurate and faster, and the length of the wire constituting the coil assembly 160 can be effectively controlled to reduce production costs.

In the first embodiment, the coil group includes a coil group and two wire terminals, but is not limited thereto. <Second embodiment>

FIG. 2A is a partial schematic diagram of an imaging lens drive module in the second embodiment of the present invention, and FIG. 2B is another partial schematic diagram of the imaging lens drive module in the second embodiment of FIG. 2A. As can be seen from FIG. 2A and FIG. 2B, the imaging lens drive module (not shown) includes a housing (not shown), a pad (not shown), a drive mechanism (not shown), an imaging lens assembly (not shown), a carrier element 250 and a base (not shown), wherein the imaging lens assembly has an optical axis (not shown).

The carrier element 250 is used to configure the imaging lens set, and includes an assembly structure 251 (as shown in FIG. 2D), at least two columnar structures 252 and at least one supporting portion 253 (as shown in FIG. 2D), wherein the assembly structure 251 is disposed on the outer surface of the carrier element 250 and extends in a direction away from the optical axis; the columnar structure 252 is disposed on the outer surface of the carrier element 250 and extends along a parallel optical axis and toward the image side of the imaging lens set; the supporting portion 253 and the assembly structure 251 are alternately disposed along a circumferential direction surrounding the optical axis. Specifically, the carrier element 250 can be a coil seat, a lens carrier, or an element combining the functions of the above two, and the columnar structure 252 can be integrally formed with the carrier element 250, but is not limited to the above. By integrally forming the columnar structure 252 and the carrier element 250, the assembly tolerance between the elements can be reduced. Furthermore, by alternately arranging the supporting portion 253 and the assembly structure 251 along the circumferential direction surrounding the optical axis, the space utilization rate in the imaging lens drive module can be improved.

The driving mechanism is used to drive the carrier element 250 to move along the direction parallel to the optical axis, and includes at least one elastic element, at least one coil set (not shown) and at least two magnets (not shown). The elastic element is coupled to the carrier element 250. The number of the elastic elements can be two, and includes an upper elastic element 230 and a lower elastic element 280, wherein the upper elastic element 230 is arranged on the object side of the imaging lens set, and the lower elastic element 280 is arranged on the image side of the imaging lens set, and is arranged opposite to the upper elastic element 230. In this way, the driving stroke range of the driving mechanism can be defined. The coil set is arranged on the assembly structure 251 of the carrier element 250.

The lower elastic element 280 may include four elastic sheets (not shown) that are electrically separated from each other. Specifically, the elastic sheets are suitable for mass production and easy to assemble, and can effectively reduce the volume of the imaging lens drive module.

Please refer to FIG. 2C to FIG. 2E, wherein FIG. 2C is a partial side view schematic diagram of the imaging lens drive module in the second embodiment of FIG. 2A, FIG. 2D is a partial object side view schematic diagram of the imaging lens drive module in the second embodiment of FIG. 2A, and FIG. 2E is a partial image side view schematic diagram of the imaging lens drive module in the second embodiment of FIG. 2A. As can be seen from FIG. 2A to FIG. 2E, the coil assembly includes a first coil 261 and a second coil 262, wherein the first coil 261 is disposed on the assembly structure 251 of the carrier element 250, and the second coil 262 is disposed on the assembly structure 251 of the carrier element 250 and is disposed opposite to the first coil 261.

The first coil 261 and the second coil 262 respectively include a bottom coil (not shown) and a top coil (not shown), wherein the bottom coil is wound around the assembly structure 251 and physically contacts the assembly structure 251; the top coil is stacked and wound on the bottom coil, farther from the assembly structure 251 than the bottom coil, and overlaps with the bottom coil along a direction parallel to the optical axis.

As can be seen from FIG. 2E, when the first coil 261 is viewed toward the second coil 262, the winding direction D1 of the first coil 261 is the same as the winding direction D1 of the second coil 262. Specifically, the same winding direction D1 means that they are both clockwise or counterclockwise. By making the winding direction D1 consistent, the winding process can be simplified, thereby reducing time costs.

The first coil 261 and the second coil 262 can be formed by two wires, so that the first coil 261 and the second coil 262 are electrically separated. Specifically, by winding different wires around the assembly structure 251 to form the first coil 261 and the second coil 262, two electrically separated first coils 261 and second coils 262 can be generated to adjust the tilt of the imaging lens assembly. In this way, the electrically separated first coil 261 and second coil 262 can be separately controlled to further optimize the imaging quality.

The elastic sheet can be electrically connected to a wire terminal 2611 of the first coil 261 and a wire terminal 2621 of the second coil 262, respectively, and the elastic sheet connecting portion 285 of the elastic sheet can be electrically connected to a wire end (not shown) of the first coil 261 and a wire end (not shown) of the second coil 262, respectively, wherein the electrical connection can be connected by welding or glue, but is not limited thereto. Furthermore, the elastic sheet can be further electrically connected to the wire terminal 2611 of the top coil and the wire end of the bottom coil of the first coil 261 and the wire terminal 2621 of the top coil and the wire end of the bottom coil of the second coil 262, respectively. In the second embodiment, the wire terminal 2611 of the first coil 261 and the elastic sheet, and the wire terminal 2621 of the second coil 262 and the elastic sheet are connected by welding, and the wire end of the first coil 261 and the elastic sheet connecting portion 285, and the wire end of the second coil 262 and the elastic sheet connecting portion 285 are connected by welding. In this way, the two elastic sheets that are electrically separated from each other can be electrically connected to the first coil 261 and the second coil 262, respectively, and the accuracy of adjusting the tilt degree of the imaging lens group can be improved.

Specifically, the wire terminal 2611 of the top coil of the first coil 261 and the wire terminal 2621 of the top coil of the second coil 262 are wound around the columnar structure 252 of the carrier element 250 to provide the wire tension required for fixing the coil assembly. This can prevent the wire from loosening from the carrier element 250 to improve the yield rate.

In the second embodiment, the coil set includes a coil set and two wire terminals, but is not limited thereto.

In addition, the structure and configuration of the remaining components of the second embodiment are the same as those of the first embodiment, and will not be further described here. <Third embodiment>

FIG. 3A is a schematic diagram of the coil set 360a and 360b in the third embodiment of the present invention, and FIG. 3B is another schematic diagram of the coil set 360a and 360b in the third embodiment of FIG. 3A. As can be seen from FIG. 3A and FIG. 3B, the coil set 360a includes a first coil 361a and a second coil 362a, and the coil set 360b includes a first coil 361b and a second coil 362b, wherein the first coils 361a and 361b are disposed on a carrier element (not shown) of an imaging lens drive module (not shown in the figure), and the second coils 362a and 362b are disposed on the carrier element of the imaging lens drive module and are disposed opposite to the first coils 361a and 361b, respectively.

The first coil and the second coil include a bottom coil and a top coil, respectively. In the third embodiment, the first coil 361a includes a bottom coil 363a and a top coil 364a, and the second coil 362a includes a bottom coil 363c and a top coil 364c; the first coil 361b includes a bottom coil 363b (as shown in FIG. 3E) and a top coil 364b, and the second coil 362b includes a bottom coil (not shown) and a top coil 364d.

Specifically, the bottom coil 363a of the first coil 361a, the bottom coil 363c of the second coil 362a, the bottom coil 363b of the first coil 361b, and the bottom coil of the second coil 362b are wound around an assembly structure (not shown) and are in physical contact with the assembly structure.

The top coil 364a of the first coil 361a and the top coil 364c of the second coil 362a are stacked and wound on the bottom coil 363a of the first coil 361a and the bottom coil 363c of the second coil 362a respectively; the top coil 364b of the first coil 361b and the top coil 364d of the second coil 362b are stacked and wound on the bottom coil 363b of the first coil 361b and the bottom coil of the second coil 362b respectively. Therefore, the top coil 364a of the first coil 361a is farther from the assembly structure than the bottom coil 363a of the first coil 361a, and overlaps with the bottom coil 363a of the first coil 361a along a direction parallel to the optical axis (not shown in the figure); the top coil 364c of the second coil 362a is farther from the assembly structure than the bottom coil 363c of the second coil 362a, and overlaps with the bottom coil 363c of the second coil 362a along a direction parallel to the optical axis (not shown in the figure). The top coil 364b of the first coil 361b is farther from the assembly structure than the bottom coil 363b of the first coil 361b, and overlaps with the bottom coil 363b of the first coil 361b in a direction parallel to the optical axis; the top coil 364d of the second coil 362b is farther from the assembly structure than the bottom coil of the second coil 362b, and overlaps with the bottom coil of the second coil 362b in a direction parallel to the optical axis.

Please refer to FIG. 3C and FIG. 3D, wherein FIG. 3C is a schematic diagram of the first coils 361a and 361b in the third embodiment of FIG. 3A, and FIG. 3D is a schematic diagram of the second coils 362a and 362b in the third embodiment of FIG. 3A. From FIG. 3A to FIG. 3D, it can be seen that the first coil 361a of the coil set 360a and the first coil 361b of the coil set 360b are wound at the same time first, and then the second coil 362a of the coil set 360a and the second coil 362b of the coil set 360b are wound at the same time. In this way, the cycle time of the product can be reduced.

Please refer to FIG. 3E to FIG. 3I, wherein FIG. 3E is a schematic diagram of the object side of the coil set 360a, 360b in the third embodiment of FIG. 3A, FIG. 3F is a schematic diagram of the image side of the coil set 360a, 360b in the third embodiment of FIG. 3A, and FIG. 3G to FIG. 3I are schematic diagrams of the side of the coil set 360a, 360b in the third embodiment of FIG. 3A. As can be seen from FIG. 3A to FIG. 3I, the top coil has two wire terminals, and the bottom coil has two wire ends, wherein the coil set may further include a connecting wire, and the connecting wire connects the wire terminal of the top coil and the wire end of the bottom coil, so that the coil set maintains electrical connection. In the third embodiment, the bottom coil 363a of the first coil 361a of the coil set 360a has a wire end 367a, the top coil 364a of the first coil 361a has a wire terminal 365a, the bottom coil 363c of the second coil 362a of the coil set 360a has a wire end 367c, and the top coil 364c of the second coil 362a has a wire terminal 365c, wherein the coil set 360a may further include a connecting wire 366a, and the connecting wire 366a connects the wire terminal 365a of the top coil 364a of the first coil 361a and the wire end 367c of the bottom coil 363c of the second coil 362a, so that the coil set 360a 0a maintains electrical connection; the bottom coil 363b of the first coil 361b of the coil group 360b has a wire end 367b, the top coil 364b of the first coil 361b has a wire terminal 365b, the bottom coil of the second coil 362b of the coil group 360b has a wire end (not shown), and the top coil 364d of the second coil 362b has a wire terminal 365d, wherein the coil group 360b may further include a connecting wire 366b, and the connecting wire 366b connects the wire terminal 365b of the top coil 364b of the first coil 361b and the wire end of the bottom coil of the second coil 362b, so that the coil group 360b maintains electrical connection. Specifically, the connecting wires 366a and 366b can be part of the wire segments of the coil assemblies 360a and 360b, but the present invention is not limited thereto. In this way, the feasibility of the coil assemblies 360a and 360b being composed of continuous wires can be provided.

Specifically, the wire terminal 365a of the top coil 364a and the wire terminal 365c of the top coil 364c are wound around the columnar structure of the carrier element (not shown) to provide the wire tension required for fixing the coil set 360a; the wire terminal 365b of the top coil 364b and the wire terminal 365d of the top coil 364d are wound around the columnar structure of the carrier element to provide the wire tension required for fixing the coil set 360b. In this way, the wire can be prevented from being loosened from the carrier element to improve the yield rate.

In the third embodiment, the coil set includes two coil sets and four wire terminals, but is not limited thereto.

In addition, the structure and configuration of the remaining components of the third embodiment are the same as those of the first embodiment and the second embodiment, and will not be further described here. <Fourth embodiment>

FIG. 4A is a schematic diagram of an electronic device 40 according to a fourth embodiment of the present invention, and FIG. 4B is another schematic diagram of the electronic device 40 according to the fourth embodiment of FIG. 4A. As can be seen from FIG. 4A and FIG. 4B, the electronic device 40 of the fourth embodiment is a smart phone, and the electronic device 40 includes an imaging lens drive module 401 (as indicated in FIG. 4C), and the imaging lens drive module 401 is an ultra-wide-angle camera module 402, a high-pixel camera module 403, and a telephoto camera module 404, wherein the imaging lens drive module 401 includes an imaging lens group (not shown), a carrier element (not shown), and a drive mechanism (not shown). Furthermore, the imaging lens drive module 401 can be any one of the first to third embodiments, but the present disclosure is not limited thereto. This helps to meet the current electronic device market's requirements for mass production and appearance of the imaging lens drive module mounted thereon.

Furthermore, the user enters the shooting mode through the user interface 405 of the electronic device 40, wherein in the fourth embodiment, the user interface 405 may be a touch screen, which is used to display the screen and has a touch function, and can be used to manually adjust the shooting angle to switch different imaging lens drive modules 401. At this time, the imaging lens group of the imaging lens drive module 401 gathers imaging light on an electronic photosensitive element (not shown), and outputs electronic signals related to the image to the imaging signal processing element (Image Signal Processor, ISP) 406.

FIG. 4C is a block diagram of an electronic device 40 according to the fourth embodiment of FIG. 4A. As can be seen from FIG. 4B and FIG. 4C, in response to the specifications of the electronic device 40, the electronic device 40 may further include an optical image stabilization component 407. Furthermore, the electronic device 40 may further include at least one focus assist module 410 and at least one sensor element 408. The focus assist module 410 may be a flash module 409 for compensating color temperature, an infrared ranging element, a laser focus module, etc. The sensing element 408 may have the function of sensing physical momentum and motion energy, such as an accelerometer, a gyroscope, or a Hall Effect Element, so as to sense the shaking and trembling imposed by the user's hand or the external environment, thereby facilitating the autofocus function of the imaging lens configured in the electronic device 40 and the optical image stabilization component 407 to obtain good imaging quality, and helping the electronic device 40 according to the present disclosure to have multiple modes of shooting functions, such as optimized Selfie, low-light HDR (High Dynamic Range), high-resolution 4K (4K Resolution) recording, etc. In addition, the user can directly view the camera's shooting screen through the user interface 405 and manually operate the framing range on the user interface 405 to achieve a WYSIWYG auto focus function.

Furthermore, the imaging lens, the electronic photosensitive element, the optical image stabilization assembly 407, the sensing element 408 and the focus assist module 410 may be disposed on a flexible printed circuit board (FPC) (not shown) and electrically connected to the imaging signal processing element 406 and other related elements via a connector (not shown) to execute the shooting process. Current electronic devices such as smartphones tend to be thinner and lighter. By placing the imaging lens driver module and related components on a flexible circuit board and integrating the circuit onto the mainboard of the electronic device using a connector, the requirements for mechanical design and circuit layout within the limited space inside the electronic device can be met and greater margin can be obtained. This also allows the autofocus function of the imaging lens driver module to be more flexibly controlled through the touch screen of the electronic device. In the fourth embodiment, the electronic device 40 may include a plurality of sensing elements 408 and a plurality of focus assisting modules 410. The sensing elements 408 and the focus assisting modules 410 are disposed on a flexible circuit board and at least one other flexible circuit board (not shown), and are electrically connected to the imaging signal processing element 406 and other related elements through corresponding connectors to execute the shooting process. In other embodiments (not shown), the sensing elements and the focus assisting modules may also be disposed on the main board of the electronic device or other forms of carrier boards according to the mechanism design and circuit layout requirements.

In addition, the electronic device 40 may further include but is not limited to a display unit (Display), a control unit (Control Unit), a storage unit (Storage Unit), a RAM (RAM), a read-only memory unit (ROM) or a combination thereof.

FIG. 4D is a schematic diagram showing an image captured by the ultra-wide-angle camera module 402 in the fourth embodiment of FIG. 4A. As can be seen from FIG. 4D, the ultra-wide-angle camera module 402 can capture images of a wider range, and has the function of accommodating more scenery.

FIG. 4E is a schematic diagram showing an image captured by the high-pixel camera module 403 in the fourth embodiment of FIG. 4A. As can be seen from FIG. 4E, the high-pixel camera module 403 can capture images with high resolution and low distortion within a certain range.

FIG. 4F is a schematic diagram showing an image captured by the telephoto camera module 404 in the fourth embodiment of FIG. 4A. As can be seen from FIG. 4F, the telephoto camera module 404 has a high-magnification function, and can capture images at a distance and magnify them to a high magnification.

As can be seen from FIG. 4D to FIG. 4F, by using imaging lens driving module 401 with different focal lengths to perform framing and in combination with image processing technology, the zoom function can be realized in electronic device 40.

Although the present invention has been disclosed as above by the embodiments, they are not intended to limit the present invention. Any person with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be defined by the scope of the attached patent application.

100,401: Imaging lens drive module 110: Housing 120: Pad 130,230: Upper elastic element 140: Imaging lens assembly 150,250: Carrier element 151,251: Assembly structure 152,252: Columnar structure 153,253: Supporting part 160,360a,360b: Coil assembly 163,363a,363b,363c: Bottom coil 164,364a,364b,364c,364d: Top coil 165,2611,2621,365a,365b,365c,365d: wire terminal 166,366a,366b: connecting wire 1631,16x1,367a,367b,367c: wire end 170: magnet 180,280: lower elastic element 181: inner part 182: outer part 183: elastic connection part 190: base 261,361a,361b: first coil 262,362a,362b: second coil 285: elastic sheet connection part 40: electronic device 402: ultra-wide-angle camera module 403: high-pixel camera module 404: Telephoto camera module 405: User interface 406: Imaging signal processing element 407: Optical image stabilization component 408: Sensor element 409: Flash module 410: Focus assist module X: Optical axis C: Electrical connection part D1: Winding direction D2: Stacking winding direction

FIG. 1A shows a schematic diagram of an imaging lens drive module according to the first embodiment of the present invention; FIG. 1B shows another schematic diagram of an imaging lens drive module in the first embodiment of FIG. 1A; FIG. 1C shows a partial schematic diagram of the imaging lens drive module in the first embodiment of FIG. 1A; FIG. 1D shows an object side schematic diagram of the carrier element and the coil assembly in the first embodiment of FIG. 1A; FIG. 1E shows an image side schematic diagram of the carrier element and the coil assembly in the first embodiment of FIG. 1A; FIG. 1F shows a side schematic diagram of the carrier element and the coil assembly in the first embodiment of FIG. 1A; FIG. 1G shows another side schematic diagram of the carrier element and the coil assembly in the first embodiment of FIG. 1A; Figure 1H is a schematic diagram of another side view of the carrier element and the coil group in the first embodiment of Figure 1A; Figure 1I is a schematic diagram of another side view of the carrier element and the coil group in the first embodiment of Figure 1A; Figure 1J is a schematic diagram of a partial side view of the carrier element and the coil group in the first embodiment of Figure 1A; Figure 1K is a schematic diagram of the stacking and winding of the coil group in the first embodiment of Figure 1A; Figure 1L is a partial enlarged view of the carrier element and the coil group in the first embodiment of Figure 1A; Figure 1M is a schematic diagram of the carrier element and the coil group in the first embodiment of Figure 1A; Figure 1N is a schematic diagram of the coil group in the first embodiment of Figure 1M; Figure 1O is another schematic diagram of the coil group in the first embodiment of Figure 1M; Figure 1P shows another schematic diagram of the carrier element and the coil group in the first embodiment of Figure 1A; Figure 1Q shows a schematic diagram of the coil group in the first embodiment of Figure 1P; Figure 1R shows another schematic diagram of the coil group in the first embodiment of Figure 1P; Figure 2A shows a partial schematic diagram of the imaging lens drive module in the second embodiment of the present invention; Figure 2B shows another partial schematic diagram of the imaging lens drive module in the second embodiment of Figure 2A; Figure 2C shows a partial side schematic diagram of the imaging lens drive module in the second embodiment of Figure 2A; Figure 2D shows a partial object side schematic diagram of the imaging lens drive module in the second embodiment of Figure 2A; Figure 2E shows a partial image side schematic diagram of the imaging lens drive module in the second embodiment of Figure 2A; FIG. 3A is a schematic diagram of a coil group in the third embodiment of the present invention; FIG. 3B is another schematic diagram of the coil group in the third embodiment of FIG. 3A; FIG. 3C is a schematic diagram of the first coil in the third embodiment of FIG. 3A; FIG. 3D is a schematic diagram of the second coil in the third embodiment of FIG. 3A; FIG. 3E is a schematic diagram of the object side of the coil group in the third embodiment of FIG. 3A; FIG. 3F is a schematic diagram of the image side of the coil group in the third embodiment of FIG. 3A; FIG. 3G is a schematic diagram of the side of the coil group in the third embodiment of FIG. 3A; FIG. 3H is another schematic diagram of the side of the coil group in the third embodiment of FIG. 3A; FIG. 3I is another schematic diagram of the side of the coil group in the third embodiment of FIG. 3A; FIG. 4A is a schematic diagram of an electronic device according to the fourth embodiment of the present invention; FIG. 4B is another schematic diagram of the electronic device according to the fourth embodiment of FIG. 4A; FIG. 4C is a block diagram of the electronic device according to the fourth embodiment of FIG. 4A; FIG. 4D is a schematic diagram of an image captured by an ultra-wide-angle camera module according to the fourth embodiment of FIG. 4A; FIG. 4E is a schematic diagram of an image captured by a high-pixel camera module according to the fourth embodiment of FIG. 4A; and FIG. 4F is a schematic diagram of an image captured by a telephoto camera module according to the fourth embodiment of FIG. 4A.

100: Imaging lens drive module

110: Shell

120: Pad

130: Upper elastic element

140: Imaging lens set

150: Carrier element

151:Assembly structure

153: Supporting part

160: Coil set

170:Magnet

180: Lower elastic element

181:Inner part

182: Outer part

183: Elastic connection part

190: Base

X: optical axis

Claims (6)

An imaging lens drive module comprises: An imaging lens group having an optical axis; A carrier element for configuring the imaging lens group and comprising: An assembly structure disposed on the outer surface of the carrier element and extending in a direction away from the optical axis; and A driving mechanism for driving the carrier element to move in a direction parallel to the optical axis and comprising: At least one coil group disposed on the assembly structure of the carrier element and comprising: A first coil disposed on the assembly structure of the carrier element; and A second coil disposed on the assembly structure of the carrier element and disposed opposite to the first coil, and the first coil and the second coil respectively comprise: A bottom coil, winding around the assembly structure and in physical contact with it; and A top coil, stacked and wound on the bottom coil, farther from the assembly structure than the bottom coil, and overlapping with the bottom coil in a direction parallel to the optical axis; At least two magnets, respectively arranged corresponding to the at least one coil group; and At least one elastic element, coupled with the carrier element; Wherein, when viewed from the first coil toward the second coil, the winding direction of the first coil is the same as the winding direction of the second coil; Wherein, the at least one coil group of the driving mechanism is simultaneously composed of the bottom coil winding around the assembly structure of the carrier element toward the top coil. An imaging lens drive module as described in claim 1, wherein the first coil and the second coil are composed of two wires so that the first coil and the second coil are electrically separated. An imaging lens drive module as described in claim 2, wherein the at least one elastic element includes a lower elastic element, and the lower elastic element is arranged on the image side of the imaging lens group. An imaging lens drive module as described in claim 3, wherein the lower elastic element includes four elastic sheets electrically separated from each other. An imaging lens drive module as described in claim 4, wherein the elastic sheets are electrically connected to a wire terminal and a wire end of the first coil and a wire terminal and a wire end of the second coil, respectively. An electronic device comprising: The imaging lens drive module as described in claim 1.

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