Optical driver and mobile terminal having same

Abstract

The utility model relates to an optical driver and a mobile terminal with the same, and the optical driver comprises an installation housing, a moving part, an image sensor, a driving mechanism, and a flexible circuit. A mounting part is arranged on one side of the mounting shell and is suitable for mounting a lens or a lens assembly; the movable piece is located in the cavity of the mounting shell and is in rolling or sliding connection with the mounting shell; the image sensor is located in the cavity of the mounting shell and arranged on the side, facing the mounting part, of the movable piece. The driving mechanism is connected with the mounting shell and the movable piece and used for driving the movable piece to move; one end of the flexible circuit is electrically connected with the image sensor. Compared with a traditional focusing mode that a lens or a lens assembly is driven to control the distance between the lens or the lens assembly and the image sensor, and the lens or the lens assembly with the large weight cannot be driven, the focusing effect is achieved by driving the image sensor with the small weight and controlling the distance between the image sensor and the lens or the lens assembly, and the focusing effect is improved. And therefore, the lens or the lens assembly with relatively heavy weight can be adapted.

Description

Technical Field

[0001] The present application relates to the technical field of optical instruments, and in particular to an optical driver and a mobile terminal having the same. Background Art

[0002] At present, most of the optical drivers for auto focus use the method of driving the lens or lens assembly to achieve the focusing effect. For example, patent document CN219458881U discloses a high-thrust VCM motor and camera, in which the zoom assembly is driven by a magnetic group and a coil, thereby driving the lens or lens assembly on the zoom assembly to move and achieve zooming.

[0003] However, this driving method can only meet the needs of optical drives with small and light lenses or lens components. As the weight and size of lenses or lens components increase, the thrust of this driving method is difficult to meet the needs.

[0004] Therefore, how to focus drive an optical driver with a heavy lens or lens assembly has become a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, the present application proposes an optical driver and a mobile terminal having the same.

[0006] According to one aspect of the present application, an optical driver is provided, comprising: a mounting housing, a moving part, an image sensor, a driving mechanism, and a flexible circuit;

[0007] The moving member is located inside the cavity of the mounting shell, and the moving member is connected to the mounting shell in a rolling or sliding manner;

[0008] The image sensor is located inside the cavity of the mounting shell, and the image sensor is arranged on a side of the moving part facing the mounting portion;

[0009] The driving mechanism is connected to the mounting shell and the moving member respectively, and the driving mechanism is used to drive the moving member to move in a preset direction;

[0010] One end of the flexible circuit is electrically connected to the image sensor, and the other end of the flexible circuit is connected to the mounting shell.

[0011] In a possible implementation, the flexible circuit is provided with an input end and a fixing portion;

[0012] The input end is electrically connected to the image sensor, and the fixing portion is connected to the mounting shell;

[0013] The input end and the fixing portion are respectively located at two opposite ends of the flexible circuit board, and the fixing portion is suitable for outputting the signal of the image sensor.

[0014] In a possible implementation, the flexible circuit is further provided with a connecting portion;

[0015] The input end is connected to the fixed part through the connecting part, and the input end and the fixed part are respectively located at two opposite ends of the image sensor.

[0016] In a possible implementation, the main body of the connecting portion is in a strip-shaped structure;

[0017] Two ends of the connecting portion in the body length direction are respectively connected to the input end and the fixing portion, and at least one point between the two connected ends is in an arc-shaped structure.

[0018] In a possible implementation, it further includes a guiding mechanism;

[0019] The guide mechanism is located between the mounting shell and the movable member, and the movable member is rollingly connected with the mounting shell through the guide mechanism.

[0020] In a possible implementation, the guide mechanism includes a guide groove and a ball;

[0021] The guide groove is provided at least one of a side of the mounting shell facing the movable member, or a side of the movable member facing the mounting shell;

[0022] The ball bearing matches the guide groove, and the ball bearing is located inside the groove body of the guide groove.

[0023] In a possible implementation, the guide groove includes a guide rod;

[0024] The main body of the guide rod is a columnar structure. There are two guide rods, the axes of the two guide rods are parallel to each other and face the moving direction of the movable member, and the balls are respectively in contact with the two guide rods.

[0025] In a possible implementation, the mounting shell includes an upper cover and a base;

[0026] The upper cover is interlocked with the base;

[0027] The mounting portion is arranged on the upper cover, and a mounting hole is formed on the mounting portion. The mounting hole passes through the mounting portion and the upper cover, and the mounting hole faces the image sensor.

[0028] In a possible implementation, the driving mechanism includes a magnet and a coil;

[0029] The magnet is arranged on a side of the movable member facing the mounting shell, the coil is arranged on a side of the mounting shell facing the movable member, and the magnet and the coil are arranged opposite to each other.

[0030] According to another aspect of the present application, a mobile terminal is provided, comprising any one of the above-mentioned optical drivers.

[0031] The present application is suitable for matching lenses or lens assemblies with heavy weight, wherein the adapted lens or lens assembly is arranged on the mounting shell through a mounting portion, and the two ends of the mounted lens or lens assembly are respectively facing the outside of the mounting shell and the image sensor inside the mounting shell. The moving part is driven by a driving mechanism to slide inside the cavity of the mounting shell, wherein the sliding direction of the moving part is toward or away from the mounting portion, and close to or away from the lens or lens assembly, and then under the drive of the driving mechanism, the image sensor arranged on the moving part is controlled to be close to or away from the lens or lens assembly to achieve focus driving. The image sensor sends the acquired signal to the terminal processor for processing through a flexible circuit. Compared with the traditional focusing method of driving the lens or lens assembly to control the distance between the lens or lens assembly and the image sensor, which cannot drive a heavy lens or lens assembly, the present application drives the image sensor with light weight to control the distance between it and the lens or lens assembly to achieve the focusing effect, thereby achieving the adaptation of the heavy lens or lens assembly.

[0032] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0034] Figure 1 An exploded view of an optical drive according to an embodiment of the present application is shown;

[0035] Figure 2 A main structure diagram of an optical drive according to an embodiment of the present application is shown;

[0036] Figure 3 A main structure diagram of an optical drive according to another embodiment of the present application is shown;

[0037] Figure 4 A main structural diagram showing a flexible circuit and an image sensor according to an embodiment of the present application;

[0038] Figure 5 A schematic diagram showing the motion state of an image sensor according to an embodiment of the present application;

[0039] Figure 6 A main structural diagram showing a flexible circuit and an image sensor according to another embodiment of the present application;

[0040] Figure 7A main structural diagram showing a flexible circuit and an image sensor according to another embodiment of the present application;

[0041] Figure 8 A main structural diagram showing a flexible circuit and an image sensor according to another embodiment of the present application;

[0042] Fig. 9 A main structural diagram showing a flexible circuit and an image sensor according to another embodiment of the present application;

[0043] Fig.10 A main structural diagram of the guide mechanism of an embodiment of the present application is shown;

[0044] Fig.11 A top view showing a guide mechanism according to an embodiment of the present application;

[0045] Fig.12 A main structural diagram showing a guide mechanism of another embodiment of the present application;

[0046] Fig.13 A top view of a guide mechanism according to another embodiment of the present application is shown. DETAILED DESCRIPTION

[0047] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0048] Among them, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0051] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0052] Figure 1 An exploded view of an optical drive according to an embodiment of the present application is shown. Figure 2 FIG. 2 shows the main structure diagram of the optical drive of the embodiment of the present application. Figure 1 and Figure 2 As shown, the optical driver includes: a mounting shell 100, a movable member 200, an image sensor 300, a driving mechanism 600 and a flexible circuit 400; a mounting portion 111 is provided on one side of the mounting shell 100, and the mounting portion 111 is suitable for mounting a lens or a lens assembly 700; the movable member 200 is located inside the cavity of the mounting shell 100, and the movable member 200 is connected to the mounting shell 100 by rolling or sliding; the image sensor 300 is located inside the cavity of the mounting shell 100, and the image sensor 300 is arranged on the side of the movable member 200 facing the mounting portion 111; the driving mechanism 600 is connected to the mounting shell 100 and the movable member 200 respectively, and the driving mechanism 600 is used to drive the movable member 200 to slide; one end of the flexible circuit 400 is electrically connected to the image sensor 300, and the other end of the flexible circuit 400 protrudes out of the mounting shell 100.

[0053] The present application is suitable for matching a lens or lens assembly 700 with a relatively large weight, wherein the adapted lens or lens assembly 700 is arranged on the mounting shell 100 through the mounting portion 111, and the two ends of the mounted lens or lens assembly 700 are respectively facing the outside of the mounting shell 100 and the image sensor 300 inside the mounting shell 100. The driving mechanism 600 drives the moving member 200 to slide inside the cavity of the mounting shell 100, wherein the sliding direction of the moving member 200 is toward or away from the mounting portion 111, and close to or away from the lens or lens assembly 700, and then under the drive of the driving mechanism 600, the image sensor 300 arranged on the moving member 200 is controlled to approach or away from the lens or lens assembly 700, so as to realize focus drive. The image sensor 300 sends the acquired signal to the terminal processor for processing through the flexible circuit 400. Compared with the traditional focusing method of driving the lens or lens assembly 700 to control the distance between the lens or lens assembly 700 and the image sensor 300, which cannot drive a lens or lens assembly 700 with a heavier weight, the present application achieves the focusing effect by driving the image sensor 300 with a lighter weight and controlling the distance between it and the lens or lens assembly 700, thereby achieving adaptation to the lens or lens assembly 700 with a heavier weight.

[0054] In a possible implementation, a guide mechanism 500 is further included; the guide mechanism 500 is located between the mounting shell 100 and the movable member 200, and the movable member 200 is rollingly or slidingly connected to the mounting shell 100 through the guide mechanism 500. By providing the guide mechanism 500, the sliding direction accuracy and sliding stability of the movable member 200 are ensured.

[0055] Furthermore, the guide mechanism 500 includes a guide groove and a ball 520; the guide groove is arranged on the side of the mounting shell 100 facing the movable member 200, or at least one of the sides of the movable member 200 facing the mounting shell 100; the ball 520 matches the guide groove, and the ball 520 is located inside the groove body of the guide groove. The overall structure is relatively simple, which effectively reduces the production cost.

[0056] like Fig.10 As shown, the guide groove includes a guide rod 510; the main body of the guide rod 510 is a columnar structure, and there are two guide rods 510, the axes of the two guide rods 510 are parallel to each other and face the sliding direction of the moving member 200, and the ball 520 is respectively in contact with the two guide rods 510. The two parallel guide rods 510 form a guide groove, so that the ball 520 can roll along the axial direction of the guide rod 510 to achieve guidance.

[0057] Preferably, there are two guide mechanisms 500, the two guide mechanisms 500 and the driving mechanism 600 are located on the same side of the moving member 200, and the two guide mechanisms 500 are located at opposite ends of the driving mechanism 600. Fig.10 and Fig.11As shown, the driving mechanism 600 is composed of two guide rods 510 forming a guide groove, and the guide groove is set on the mounting shell 100. The ball bearings 520 are respectively in contact with the guide groove and the outer side wall of the moving member 200. There are more than two ball bearings 520 to support the moving member 200. Fig.12 and Fig.13 As shown, the driving mechanism 600 is composed of four guide rods 510 forming two guide grooves, the two guide grooves are respectively arranged on the mounting shell 100 and the movable member 200, and the balls 520 are respectively in contact with the two guide grooves, wherein there are more than two balls 520 to guide the movable member 200.

[0058] In a possible implementation, the mounting shell 100 includes an upper cover 110 and a base 120; the upper cover 110 and the base 120 are interlocked; the mounting portion 111 is disposed on the upper cover 110, and the mounting portion 111 is provided with a mounting hole, which passes through the mounting portion 111 and the upper cover 110, and faces the image sensor 300. The overall structure is relatively simple, which effectively reduces the production cost.

[0059] In a possible implementation, the driving mechanism 600 includes a magnet 610 and a coil 620; the magnet 610 is disposed on the side of the moving member 200 facing the mounting shell 100, and the coil 620 is disposed on the side of the mounting shell 100 facing the moving member 200, and the magnet 610 and the coil 620 are disposed opposite to each other. Common technical means in the art may be used here.

[0060] Furthermore, a yoke is provided on the side of the coil 620 facing away from the magnet 610. The yoke is provided to increase the magnetic flux density and enhance the electromagnetic force.

[0061] In one possible implementation, Figure 4 As shown, the flexible circuit 400 is provided with an input end 440, an output end 410 and a fixing portion 420; the input end 440 is electrically connected to the image sensor 300, the output end 410 protrudes out of the mounting shell 100, and the fixing portion 420 is connected to the mounting shell 100; the input end 440 and the output end 410 are respectively located at opposite ends of the flexible circuit board, and the fixing portion 420 is located in the middle of the flexible circuit board.

[0062] Furthermore, the flexible circuit 400 is further provided with a connecting portion 430; the input end 440 is connected to the fixing portion 420 via the connecting portion 430, and the input end 440 and the fixing portion 420 are respectively located at opposite ends of the image sensor 300. During the movement of the moving member 200, the fixing end is fixed to the mounting shell 100, and the input end 440 moves with the image sensor 300, so that the connecting portion 430 undergoes elastic deformation during the movement of the moving member 200. Figure 5As shown, by disposing the input end 440 and the fixing portion 420 at opposite ends of the image sensor 300 , the length of the connecting portion 430 is extended to prevent the connecting portion 430 from elastically deforming at a concentrated position, thereby affecting the service life.

[0063] Furthermore, the main body of the connecting portion 430 is in a strip-shaped structure; the two ends of the connecting portion 430 in the body length direction are respectively connected to the input end 440 and the fixing portion 420, and the middle part of the connection is in an arc-shaped structure. When the moving member 200 moves up or down, in order to ensure that the image sensor 300 does not deviate when moving in a preset direction, the arc-shaped structure of the connecting portion 430 in the flexible circuit 400 can stretch or reduce the distance between the two ends by changing the size of the arc, thereby ensuring that the flexible circuit 400 does not pull the moving member 200.

[0064] In one possible implementation, Figure 4 As shown, there are two arc-shaped structures of the connecting part 430, and the two arc-shaped structures are arranged in an S shape. There are two connecting parts 430, and the two connecting parts 430 are respectively located at the opposite ends of the input end 440. The two connecting parts 430, the input end 440 and the fixed part 420 constitute a mouth-shaped structure, and the moving part 200 is located in the middle of the mouth-shaped structure.

[0065] In another possible implementation, Figure 6 As shown, the arc-shaped structure of the connecting part 430 is one, and there are two connecting parts 430 . The two connecting parts 430 are respectively located at opposite ends of the input end 440 . The two connecting parts 430 , the input end 440 and the fixing part 420 constitute a mouth-shaped structure, and the moving part 200 is located in the middle of the mouth-shaped structure.

[0066] In another possible implementation, Figure 7 As shown, there is one connecting portion 430 , and the connecting portion 430 , the input end 440 and the fixing portion 420 form a C-shaped structure, and the moving member 200 is located in the middle of the C-shaped structure.

[0067] In another possible implementation, Figure 8 As shown, the arc-shaped structure of the connecting portion 430 is formed by bending.

[0068] In another possible implementation, Fig. 9 As shown, the connecting portion 430 is a multi-strand structure, that is, the connecting portion 430 is in a grid shape.

[0069] It should be noted that although Figure 4 , Figures 6 to 9The flexible circuit 400 is introduced as an example, but those skilled in the art will appreciate that the present application should not be limited thereto. In fact, the user can flexibly set the specific structure of the flexible circuit 400 according to personal preferences and / or actual application scenarios, as long as the arc structure of the connecting portion 430 in the flexible circuit 400 can be stretched or reduced by changing the size of the arc to ensure that the flexible circuit 400 does not pull the movable member 200.

[0070] In a possible implementation, a position sensor is disposed on the moving member 200 or the mounting shell 100. When the moving member 200 moves, a position change signal is detected by the position sensor, and real-time position information is fed back.

[0071] According to another aspect of the present application, a mobile terminal is provided, comprising any one of the above-mentioned optical drivers.

[0072] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An optical drive, characterized in that: include: Install the housing, moving parts, image sensor, drive mechanism and flexible circuit; The moving member is located inside the cavity of the mounting shell, and the moving member is connected to the mounting shell in a rolling or sliding manner; The image sensor is located inside the cavity of the mounting shell, and the image sensor is arranged on a side of the moving part facing the mounting shell; The driving mechanism is connected to the mounting shell and the moving member respectively, and the driving mechanism is used to drive the moving member to move in a preset direction; One end of the flexible circuit is electrically connected to the image sensor, and the other end of the flexible circuit is connected to the mounting shell.

2. The optical drive according to claim 1, characterized in that: The flexible circuit is provided with an input end and a fixing portion; The input end is electrically connected to the image sensor, and the fixing portion is connected to the mounting shell; The input end and the fixing portion are respectively located at two opposite ends of the flexible circuit, and the fixing portion is suitable for outputting the signal of the image sensor.

3. The optical drive according to claim 2, characterized in that: The flexible circuit is also provided with a connecting portion; The input end is connected to the fixed part through the connecting part, and the input end and the fixed part are respectively located at two opposite ends of the image sensor.

4. The optical drive according to claim 3, characterized in that: The main body of the connecting part is in a strip-shaped structure; Two ends of the connecting portion in the body length direction are respectively connected to the input end and the fixing portion, and at least one point between the two connected ends is in an arc-shaped structure.

5. The optical drive according to claim 1, characterized in that: It also includes a guiding mechanism; The guide mechanism is located between the mounting shell and the movable member, and the movable member is rollingly connected with the mounting shell through the guide mechanism.

6. The optical drive according to claim 5, characterized in that: The guide mechanism comprises a guide groove and a ball; The guide groove is provided at least one of a side of the mounting shell facing the movable member, or a side of the movable member facing the mounting shell; The ball bearing matches the guide groove, and the ball bearing is located inside the groove body of the guide groove.

7. The optical drive according to claim 6, characterized in that: The guide groove includes a guide rod; The main body of the guide rod is a columnar structure. There are two guide rods, the axes of the two guide rods are parallel to each other and face the moving direction of the movable member, and the balls are respectively in contact with the two guide rods.

8. The optical drive according to claim 5, characterized in that: The installation shell includes an upper cover and a base; The upper cover is interlocked with the base; The mounting shell is arranged on the upper cover, and a mounting hole is opened in the mounting shell. The mounting hole passes through the mounting shell and the upper cover, and the mounting hole faces the image sensor.

9. The optical drive according to claim 5, characterized in that: The driving mechanism includes a magnet and a coil; The magnet is arranged on a side of the movable member facing the mounting shell, the coil is arranged on a side of the mounting shell facing the movable member, and the magnet and the coil are arranged opposite to each other.

10. A mobile terminal, characterized in that: The optical drive comprises any one of claims 1 to 9.

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