Inner focusing drive device and image pickup apparatus

Abstract

The utility model relates to an inner focusing drive arrangement and camera equipment, including the casing with the incident light hole, be equipped with the moving piece in the casing under the drive of first drive subassembly can along the axial linear motion of incident light hole, be equipped with the dynamic optical carrier on moving piece under the drive of second drive subassembly can move on the plane perpendicular to incident light hole, dynamic optical carrier is connected in moving piece through the sliding axle group of linear sliding on the plane, be equipped with the static optical carrier on casing in incident light hole axial opposite dynamic optical carrier static. The application's advantage lies in: utilize the dynamic optical carrier and the fine optical component of split type, greatly alleviate the drive pressure in the anti -shake mechanism and focusing mechanism, and the sliding axle structure for focusing can promote the focusing accuracy, and the sliding axle structure for anti -shake can bear the product of greater load and big stroke.

Description

Technical Field

[0001] This application belongs to the field of camera equipment, and particularly relates to an internal focusing drive device and camera equipment. Background Technology

[0002] Optical image stabilization (OIS) in mobile photography is a motion stabilization platform technology designed to reduce the impact of camera shake and vibration on image stability. During mobile phone photography, factors such as hand tremors and object movement often lead to blurry or distorted images; in these situations, OIS technology plays a crucial role.

[0003] Optical image stabilization (OIS) technology in cameras employs mechanical stabilization devices, using the electronic system of the control unit and motion sensors to enable the camera to adaptively adjust to changes in the external environment. Specifically, it detects the shaking and vibration of the phone based on external factors and balances these forces by controlling the lens position or camera sensor components. This ensures both image sharpness and stability when shooting still photos or continuous video.

[0004] Optical image stabilization uses a purely optical method for correction, which is more reliable than digital image stabilization. It still has advantages in low light conditions, while also enabling faster focusing, more stable images, and clearer, more natural images.

[0005] In existing technologies, the OIS of the internal focusing structure is a suspension wire structure, and its focusing structure is designed as a spring. The structure of this spring limits the focusing travel specifications, meaning it cannot get closer to the target. The optical components are all set on the image stabilization carrier, resulting in poor image stabilization and focusing effects, and requiring a large driving force to operate. Utility Model Content

[0006] The purpose of this utility model is to address the above-mentioned problems by providing an internal focusing drive device and camera equipment that can solve the aforementioned technical problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An internal focusing drive device includes a housing with an incident light aperture. Inside the housing is a moving component that can move linearly along the axial direction of the incident light aperture under the drive of a first drive assembly. On the moving component is a moving optical carrier that can move on a plane perpendicular to the incident light aperture under the drive of a second drive assembly. The moving optical carrier is connected to the moving component via a sliding shaft assembly that slides linearly on the plane. On the housing is a stationary optical carrier that is stationary relative to the moving optical carrier along the axial direction of the incident light aperture.

[0009] Furthermore, the static optical carrier is fixed to the top surface of the housing.

[0010] Furthermore, an annular support member is provided on the top surface of the housing, and at least a portion of the static optical carrier is fixed within the annular support member.

[0011] Furthermore, the sliding shaft assembly includes a sliding frame, a first sliding shaft assembly is provided between the sliding frame and the moving component, and a second sliding shaft assembly is provided between the sliding frame and the moving optical carrier. The projections of the first sliding shaft assembly and the second sliding shaft assembly on the plane are vertically distributed.

[0012] Furthermore, at least a portion of the moving optical carrier is mounted in the moving support frame, and the second sliding shaft assembly is provided between the moving support frame and the sliding frame.

[0013] Furthermore, the first sliding shaft assembly includes a first sliding shaft and a first shaft groove that slide together, with either the first sliding shaft or the first shaft groove fixed to the sliding frame and the other fixed to the moving component; the second sliding shaft assembly includes a second sliding shaft and a second shaft groove that slide together, with either the second sliding shaft or the second shaft groove fixed to the sliding frame and the other fixed to the moving support frame.

[0014] Furthermore, the second driving component is an electromagnetic driving component, at least a portion of the second driving component is fixed to the moving support frame, and the remaining portion of the second driving component is fixed to the housing.

[0015] Furthermore, the base of the housing and the moving component are connected by a guide shaft assembly distributed along the axial direction of the incident light aperture. The guide shaft assembly includes guide posts and guide post slots / holes that slide against each other. Either the guide post or the guide post slot / hole is fixed to the base, and the other is fixed to the moving component.

[0016] Furthermore, the first driving component is an electromagnetic driving component, at least a portion of the first driving component is fixed to the moving member, and the remaining portion of the first driving component is fixed to the housing.

[0017] This application also provides a camera device, which includes the aforementioned internal focusing drive device.

[0018] Compared with existing technologies, the advantages of this application are: by using a separate moving optical carrier and precision optical components, the driving pressure in the image stabilization mechanism and the focusing mechanism is greatly reduced. At the same time, the sliding shaft structure used for focusing can improve focusing accuracy, and the sliding shaft structure used for image stabilization can support products with greater load and longer stroke. Attached Figure Description

[0019] Figure 1 This is an assembly drawing of the main structure of the internal focusing drive device of this utility model.

[0020] Figure 2 This is a structural diagram of the external components of the hidden housing of the internal focusing drive device of this utility model;

[0021] Figure 3 for Figure 1 Detailed view of the main structure of the center-inner focusing drive device from the left front perspective after the explosion;

[0022] Figure 4 for Figure 1 Detailed view of the main structure of the internal focusing drive device from the left rear view after the explosion;

[0023] Figure 5 for Figure 1 Detailed view of the main structure of the internal focusing drive device from the left front of the explosion, taken from an upward angle.

[0024] Figure 6 for Figure 5 Enlarged view of structural details in area A of the middle section;

[0025] Figure 7 This is a detailed view of the main structure of the moving parts and sliding shaft assembly of this utility model;

[0026] Figure 8 This is a schematic diagram illustrating an example of the camera device in Embodiment 2.

[0027] In the figure, there are: housing 1, incident light aperture 10, annular support 11, base 12, guide shaft assembly 13, guide post 130, guide post groove / hole 131, first drive assembly 2, first coil 20, first magnet 21, second drive assembly 3, second coil 30, second magnet 31, moving part 4, moving optical carrier 5, sliding shaft assembly 50, sliding frame 500, reinforcing part 500s, first sliding shaft assembly 501, first sliding shaft 501a, first shaft groove 501b, second sliding shaft assembly 502, second sliding shaft 502a, second shaft groove 502b, static optical carrier 6, moving support frame 7, first axis Y, second axis X, and plane xY. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] Example 1

[0030] like Figures 1-3 As shown, the internal focusing drive device is mainly composed of a housing 1. An incident light hole 10 is provided on the housing 1. A base 12 is also provided at the bottom of the housing 1. Most of the internal parts of the internal focusing drive device are located on the base 12.

[0031] like Figure 4 As shown, a first driving component 2 and a second driving component 3 are provided inside the housing 1. The first driving component 2 is an electromagnetic driving component, which includes a first coil 20 and a first magnet 21. The second driving component 3 is the same as the first driving component 2, including a second coil 30 and a second magnet 31. Specifically, in this embodiment, there are two sets of second coils 30 and second magnets 31. Each set of second coils 30 corresponds to a second magnet 31 and forms two sets of driving forces with perpendicular driving directions. For example, the first set of driving forces is: the direction of the second coil 30 and the second magnet 31 is along the first axis Y direction, and the second set of driving forces is: the direction of the second coil 30 and the second magnet 31 is along the second axis X direction. In this embodiment, the first coil 20 and the second coil 30 are fixed inside the circuit board of the base 12, which has a U-shaped design.

[0032] In this embodiment, a moving part 4 is provided inside the housing 1, which can move linearly along the axial direction of the incident light aperture 10 under the drive of the first driving component 2. The moving part 4 is used for the focusing movement of the lens. A moving optical carrier 5 is provided on the moving part 4, which can move on the plane xY perpendicular to the incident light aperture 10 under the drive of the second driving component 3. The first magnet 21 is fixed on the moving part 4, and the second magnet 31 is used to drive the moving optical carrier 5.

[0033] Specifically, such as Figure 2 As shown, the moving component 4 and the base 12 are connected by a guide shaft assembly 13 distributed along the axial direction of the incident light aperture 10. The guide shaft assembly 13 consists of guide posts 130 and guide post grooves / holes 131, such as guide post grooves or guide post holes 131. In this embodiment, the guide posts 130 are fixed on the base 12, and the guide post grooves / holes 131 are provided on the moving component 4. The guide posts 130 and guide post grooves / holes 131 slide against each other. Under the drive of the first drive assembly 2, the moving component 4 moves linearly along the axial direction of the incident light aperture 10 to focus. In addition, the positions of the guide posts 130 and guide post grooves / holes 131 can be interchanged. The guide posts 130 are set on the moving component 4, and the guide post grooves / holes 131 are on the base 12. Both can achieve the same focusing effect.

[0034] The moving optical carrier 5 is connected to the moving component 4 via a sliding shaft assembly 50 that slides linearly along the xY plane. The linear sliding of the sliding shaft assembly 50 allows for precise adjustment of the position of the moving optical carrier 5, thereby altering the optical path to achieve image stabilization. Simultaneously, a stationary optical carrier 6 is provided on the housing 1. The stationary optical carrier 6 is fixed to the top surface of the housing 1 and remains stationary relative to it, preventing positional changes due to the displacement of the moving optical carrier 5. The stationary optical carrier 6 includes an annular support member 11 fixedly connected to the top surface of the housing 1. The stationary optical carrier 6 also supports the stationary optical lens.

[0035] Specifically, the sliding shaft assembly 50 includes a sliding frame 500, which is U-shaped and includes four corner sliders. Two adjacent corner sliders are connected by a reinforcing member 500s. A first sliding shaft assembly 501 is provided between the sliding frame 500 and the moving member 4. The first sliding shaft assembly 501 allows the moving optical carrier 5 to move relative to the moving member 4 in the first axis Y direction. A second sliding shaft assembly 502 is provided between the sliding frame 500 and the moving optical carrier 5. The projections of the first sliding shaft assembly 501 and the second sliding shaft assembly 502 on the plane xY are perpendicularly distributed. The second sliding shaft assembly 502 allows the moving optical carrier 5 to move relative to the moving member 4 in the second axis X direction.

[0036] The moving optical carrier 5 includes a moving support frame 7, which is used to mount the support lens, and the second sliding shaft group 502 is disposed between the moving support frame 7 and the sliding frame 500.

[0037] In this embodiment, as Figure 7 As shown, the first sliding shaft assembly 501 includes a first sliding shaft 501a and a first shaft groove 501b that slide against each other. Either the first sliding shaft 501a or the first shaft groove 501b is fixed to the sliding frame 500, and the other is fixed to the moving part 4; similarly, as... Figures 5-6 As shown, the second sliding shaft assembly 502 includes a second sliding shaft 502a and a second shaft groove 502b that slide and engage with each other. Either the second sliding shaft 502a and the second shaft groove 502b are fixed to the sliding frame 500, and the other is fixed to the moving support frame 7. In this embodiment, the first shaft groove 501b and the second sliding shaft 502a are fixed on the sliding frame 500. The design of the sliding shaft and shaft groove that slide and engage with each other can effectively reduce friction, making the movement smooth and fluid, reducing the wear and resistance of moving parts. At the same time, this design has higher load-bearing strength compared with other designs.

[0038] Example 2

[0039] The structure and principle of this embodiment are basically the same as those of Embodiment 1. The difference lies in that, in relation to the internal focusing drive device of Embodiment 1, the camera device in this embodiment includes an internal focusing drive device.

[0040] like Figure 8 As shown, a camera device includes a lens driving mechanism. A camera device refers to a modular assembly that integrates a camera, lens, sensor, and other related components. Camera devices typically include components such as an image sensor, image processor, lens, optical filter, focus adjuster, and autofocus module, and can be directly used in various devices and applications, such as smartphones, tablets, surveillance cameras, and vehicle cameras.

[0041] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An internal focusing drive device, comprising a housing (1) having an incident light aperture (10), wherein a moving component (4) is provided within the housing (1) and is capable of linearly moving along the axial direction of the incident light aperture (10) under the drive of a first drive assembly (2), and a moving optical carrier (5) is provided on the moving component (4) and is capable of moving in a plane (xY) perpendicular to the incident light aperture (10) under the drive of a second drive assembly (3), characterized in that, The moving optical carrier (5) is connected to the moving part (4) by a sliding shaft assembly (50) that slides linearly on the plane (xY), and the housing (1) is provided with a static optical carrier (6).

2. The internal focusing drive device according to claim 1, characterized in that, The static optical carrier (6) is fixed to the top surface of the housing (1).

3. The internal focusing drive device according to claim 2, characterized in that, The static optical carrier (6) includes an annular support member (11) fixed to the top surface of the housing (1).

4. The internal focusing drive device according to claim 1, characterized in that, The sliding shaft assembly (50) includes a sliding frame (500), a first sliding shaft assembly (501) is provided between the sliding frame (500) and the moving part (4), and a second sliding shaft assembly (502) is provided between the sliding frame (500) and the moving optical carrier (5). The projections of the first sliding shaft assembly (501) and the second sliding shaft assembly (502) on the plane (xY) are vertically distributed.

5. The internal focusing drive device according to claim 4, characterized in that, The moving optical carrier (5) includes a moving support frame (7), and the second sliding shaft group (502) is provided between the moving support frame (7) and the sliding frame (500).

6. The internal focusing drive device according to claim 5, characterized in that, The first sliding shaft assembly (501) includes a first sliding shaft (501a) and a first shaft groove (501b) that slide together. Either the first sliding shaft (501a) or the first shaft groove (501b) is fixed to the sliding frame (500), and the other is fixed to the moving part (4). The second sliding shaft assembly (502) includes a second sliding shaft (502a) and a second shaft groove (502b) that slide together. Either the second sliding shaft (502a) or the second shaft groove (502b) is fixed to the sliding frame (500), and the other is fixed to the moving support frame (7).

7. The internal focusing drive device according to claim 5, characterized in that, The second drive assembly (3) is an electromagnetic drive assembly, at least a portion of the second drive assembly (3) is fixed to the moving support frame (7), and the remaining portion of the second drive assembly (3) is fixed to the housing (1).

8. The internal focusing drive device according to claim 1, characterized in that, The base (12) of the housing (1) and the moving part (4) are connected by a guide shaft assembly (13) distributed along the axial direction of the incident light hole (10). The guide shaft assembly (13) includes a guide post (130) and a guide post groove / hole (131) that slide against each other. Either the guide post (130) or the guide post groove / hole (131) is fixed to the base (12), and the other is fixed to the moving part (4).

9. The internal focusing drive device according to claim 1, characterized in that, The first drive assembly (2) is an electromagnetic drive assembly, at least a portion of the first drive assembly (2) is fixed to the moving part (4), and the remaining portion of the first drive assembly (2) is fixed to the housing (1).

10. A camera device, characterized in that, The camera device includes the internal focusing drive device as described in any one of claims 1-9.

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