Lens module and camera device having the same

Abstract

The application discloses a lens module and a camera device with the same. The lens module comprises a lens barrel, a movable part and an electromagnetic driving assembly. The lens barrel is internally provided with a containing space. The movable part is used for carrying an image sensor. Part of the movable part used for carrying the image sensor is located below the containing space. The electromagnetic driving assembly comprises a coil and a magnetic body. The electromagnetic driving assembly is arranged below the containing space. The electromagnetic driving assembly drives the movable part to move by generating Lorentz force or magnetic force between a magnetic field generated by energizing the coil and the magnetic body, so as to drive the image sensor to move. According to the lens module of the embodiment of the application, focusing is realized by driving the image sensor to move instead of driving the lens assembly to move, so that the driving force required by the lens module is smaller, the space reserved for the image sensor by the lens module is smaller, and the thickness in the axial direction can be saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of camera equipment, in particular to a lens module and a camera equipment with the same. BACKGROUND

[0002] With the rapid development of multimedia technology, digital cameras, camcorders, tablet computers and mobile phones with cameras are more and more favored by consumers. In the photographic devices such as digital cameras, camcorders and mobile phone cameras, a lens module is an indispensable component. The lens module usually includes a lens barrel, a lens seat, a lens, a driving device and an image sensor. The lens is accommodated in the lens barrel, the image sensor is arranged in the lens seat, and the driving device adjusts the lens to move relative to the image sensor to achieve the functions of focusing or anti-shake.

[0003] The existing focusing or anti-shake lens module uses a driving motor or a voice coil motor to drive the lens barrel or the lens seat to displace to change the distance between the lens and the image sensor to achieve focusing or anti-shake. However, such a lens module not only has high cost, but also needs to reserve a large space for the movement of the lens due to the large size of the lens, which increases the size of the lens module and cannot meet the demand for thinness of the camera module or the camera equipment. Therefore, it is necessary to provide a focusing or anti-shake lens module with small space occupation. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a lens module, which is small in size and occupies small space, and can meet the demand for thinness of the camera module or the camera equipment.

[0005] The present application also provides a camera equipment with the above lens module.

[0006] According to the lens module of the first aspect of the present application, the lens barrel, the movable part and the electromagnetic driving assembly are provided, the lens barrel is provided with an accommodation space, the movable part is used for carrying the image sensor, the part of the movable part used for carrying the image sensor is located below the accommodation space, the electromagnetic driving assembly includes a coil and a magnetic body, the electromagnetic driving assembly is arranged below the accommodation space, and the electromagnetic driving assembly drives the movable part to move to drive the image sensor to move by generating Lorentz force or magnetic force between the magnetic field generated by energizing the coil and the magnetic body.

[0007] According to the lens module provided by the embodiment of the present application, the following technical effects are achieved: the lens barrel is provided with a containing space for placing the lens assembly, the movable part is used for carrying the image sensor, and the part used for carrying the image sensor is located below the containing space, so that the image sensor can be located at the bottom of the lens assembly, and the distance or position relationship between the image sensor and the lens assembly can be adjusted by driving the movable part to move through the electromagnetic driving assembly, so that the focusing or anti-shake is achieved. By driving the image sensor to move instead of driving the lens assembly to move, the driving force required by the lens module is smaller, and the driving is more convenient. Meanwhile, the image sensor is small in size, so that the space reserved for the image sensor by the lens module is small, and thus the thickness of the lens module in the axial direction can be saved.

[0008] According to some embodiments of the present application, the coil is arranged on the movable part, and the magnetic bodies are arranged in two and fixed on the two sides of the coil respectively.

[0009] According to some embodiments of the present application, the faces of the magnetic bodies on the two sides of the coil towards the coil are one positive magnetic pole and the other negative magnetic pole.

[0010] According to some embodiments of the present application, the coil is fixed below the movable part, the magnetic bodies are connected with the bottom of the movable part and located above the coil.

[0011] According to some embodiments of the present application, the face of the magnetic body towards the coil is a negative magnetic pole or a positive magnetic pole.

[0012] According to some embodiments of the present application, the movable part comprises a carrying plate, the carrying plate is located at the bottom of the containing space, the carrying plate is used for carrying the image sensor, and the electromagnetic driving assembly drives the carrying plate to move so as to drive the image sensor to move.

[0013] According to some embodiments of the present application, the lens module further comprises a fixed plate, the movable part further comprises a side plate, the fixed plate and the side plate are arranged on the side surface of the movable part and oppositely arranged, and the movable part moves relative to the fixed plate through the side plate.

[0014] According to some embodiments of the present application, the side plate and the fixed plate are provided with oppositely arranged sliding grooves, the sliding grooves are enclosed to form a sliding channel, and the sliding channel is provided with a ball and / or a roller.

[0015] According to some embodiments of the present application, the side plate and the fixed plate are embedded with magnetic members, and the side plate and the fixed plate are abutted together through the magnetic force of the magnetic members.

[0016] The camera device according to the second aspect of the present application comprises the lens module according to the first aspect of the present application.

[0017] The camera device according to the present application has at least the following technical effect: by using the lens module, the volume of the lens module is reduced, the space occupied is small, and the demand for thin and small camera module or camera device can be met.

[0018] Additional aspects and advantages of the present application will be described in the following description and will be apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above additional aspects and advantages of the present application will become apparent and easy to understand from the following description of the embodiments with reference to the accompanying drawings, in which:

[0020] Figure 1 is a schematic diagram of the overall structure of the lens module according to the embodiment of the present application;

[0021] Figure 2 is a schematic diagram of the combination structure of the lens module fixing plate and the movable part according to the embodiment of the present application;

[0022] Figure 3 is a schematic diagram of the first driving mode structure of the lens module according to the embodiment of the present application;

[0023] Figure 4 is a schematic diagram of the bottom structure of the first driving mode of the lens module according to the embodiment of the present application;

[0024] Figure 5 is a schematic diagram of the second driving mode structure of the lens module according to the embodiment of the present application.

[0025] Reference Signs:

[0026] Lens barrel 100, movable part 200, bearing plate 210, side plate 220, sliding groove 221, ball 230, coil 310, magnetic body 320, Hall sensor 321, fixing plate 400, magnetic member 410, flexible circuit board 500, housing 600. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0028] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by the upper, lower, front, rear, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0029] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is two or more, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features or the order of the indicated technical features.

[0030] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0031] The lens module according to the embodiments of the present application will be described below with reference to Figures 1 to 5 .

[0032] For example Figure 2 and Figure 3 As shown in the drawings, the lens module according to the first embodiment of the present application comprises a lens barrel 100, a movable part 200 and an electromagnetic drive assembly. The lens barrel 100 is provided with a receiving space. The movable part 200 is used to carry an image sensor, and the part of the movable part 200 used to carry the image sensor is located below the receiving space. The electromagnetic drive assembly comprises a coil 310 and a magnetic body 320. The electromagnetic drive assembly is arranged below the receiving space. The electromagnetic drive assembly drives the movable part 200 to move by generating Lorentz force or magnetic force between the magnetic field generated by the coil and the magnetic body, thereby driving the image sensor to move.

[0033] For example Figure 2 and Figure 3As shown, the lens module according to the embodiment of the first aspect of the present application comprises a lens barrel 100, a movable part 200 and an electromagnetic driving assembly. The lens barrel 100 is provided with a containing space for placing a lens assembly. The movable part 200 is used for carrying an image sensor, and the part of the movable part 200 carrying the image sensor is located below the containing space, so that the image sensor can be located below the lens assembly to receive image signals transmitted by the lens. The electromagnetic driving assembly is located at the bottom of the containing space, and the electromagnetic assembly comprises a coil 310 and a magnetic body 320. One of the coil 310 and the magnetic body 320 is connected to the movable part 200, and the other is fixedly arranged. By energizing the coil 310, the mutual attraction or repulsion of the Lorentz force or magnetic force between the coil 310 and the magnetic body 320 causes the coil 310 and the magnetic body 320 to move relative to each other. Changing the direction of the current in the coil 310 can make the movable part 200 move upward or downward, so that the image sensor moves closer to or farther away from the lens assembly, thereby achieving focusing.

[0034] According to the lens module of the embodiment of the present application, by being thus arranged, at least the following beneficial effects can be achieved: The lens barrel 100 is provided with a containing space for placing a lens assembly. The movable part 200 is used for carrying an image sensor, and the part of the movable part 200 carrying the image sensor is located below the containing space, so that the image sensor can be located below the lens assembly. The electromagnetic driving assembly is used to drive the movable part 200 to move, so as to adjust the distance or positional relationship between the image sensor and the lens assembly, thereby achieving focusing or anti-shake. By driving the image sensor to move instead of driving the lens assembly to move, the driving force required by the lens module is smaller, and the driving is more convenient. At the same time, the image sensor has a small volume, so that the lens module reserves a small space for the image sensor, thereby saving the thickness of the lens module in the axial direction, so that the lens module has a small volume and occupies a small space, which can meet the demand of people for thin and small camera modules or video recording equipment.

[0035] In some specific embodiments of the present application, the coil 310 is arranged on the movable part 200, and the magnetic body 320 is arranged with two magnetic bodies respectively fixedly arranged on the two sides of the coil 310.

[0036] For example Figure 5As shown, the coil 310 is arranged on the movable part 200 and fixedly connected with the movable part 200, and one magnetic body 320 is arranged on each side of the coil 310, the magnetic induction lines generated by the magnetic bodies 320 pass through the coil 310, so that the Lorentz force is generated between the coil 310 and the magnetic bodies 320 to drive the movable part 200 to move up and down, so that the image sensor is close to or away from the lens assembly, and the focusing effect of the lens is achieved. By arranging the magnetic bodies 320 on the two sides of the coil 310, the space on the two sides of the coil 310 can be utilized, the thickness in the optical axis direction is reduced, and the volume of the lens module in the optical axis direction is reduced.

[0037] In some embodiments of the present application, one of the faces of the magnetic body 320 on the two sides of the coil 310 towards the coil 310 is a positive magnetic pole, and the other is a negative magnetic pole.

[0038] By arranging the magnetic bodies 320 on the two sides of the coil 310 to be a positive magnetic pole on one of the faces towards the coil 310 and a negative magnetic pole on the other, it is ensured that the magnetic induction lines generated by the two magnetic bodies 320 can pass through the coil 310 to generate the interacting Lorentz force, and at the same time, the magnetic body 320 has a certain length in the vertical direction to ensure that the magnetic induction lines always pass through the coil 310 when the coil 310 follows the movable part 200 to move up and down.

[0039] In some embodiments of the present application, the coil 310 is fixedly arranged below the movable part 200, and the magnetic body 320 is connected with the bottom of the movable part 200 and located above the coil 310.

[0040] For example Figure 3 and Figure 4 As shown, the coil 310 is fixedly arranged below the movable part 200, and the magnetic body 320 is connected with the bottom of the movable part 200 and located above the coil 310, when the coil 310 is energized, the coil 310 generates magnetism, and the magnetism generated by the coil 310 and the magnetism of the magnetic body 320 attract or repel each other, so that the image sensor is away from or close to the lens assembly, thereby adjusting the distance between the image sensor and the lens assembly to achieve focusing. At the same time, the mass of the magnetic body 320 is lighter than that of the coil 310, and the magnetic body 320 is more easily driven when connected with the movable part 200.

[0041] In some embodiments of the present application, the face of the magnetic body 320 towards the coil 310 is a negative magnetic pole or a positive magnetic pole.

[0042] The entire face of the magnetic body 320 towards the coil 310 is a negative magnetic pole or a positive magnetic pole, so that the magnetism generated by the energization of the coil 310 can attract or repel the bottom face of the magnetic body 320, thereby generating a force to drive the movable part 200 to move up and down, adjust the distance between the image sensor and the lens assembly, and achieve the focusing effect.

[0043] In some embodiments of the present application, the movable part 200 comprises a bearing plate 210, which is located at the bottom of the accommodating space, and the bearing plate 210 is used to carry the image sensor, and the electromagnetic driving assembly drives the bearing plate 210 to move so as to drive the image sensor to move.

[0044] For example Figure 3 and Figure 4 As shown in the drawings, the movable part 200 comprises a bearing plate 210, which is located at the bottom of the accommodating space, and the bearing plate 210 is used to carry the image sensor, and the electromagnetic driving assembly drives the bearing plate 210 to move so as to drive the image sensor to move.

[0045] In some embodiments of the present application, the lens module further comprises a fixed plate 400, and the movable part 200 further comprises a side plate 220, the fixed plate 400 and the side plate 220 are arranged on the side of the movable part 200, and the fixed plate 400 and the side plate 220 are oppositely arranged, and the movable part 200 moves relative to the fixed plate 400 through the side plate 220.

[0046] For example Figure 2 and Figure 3 As shown in the drawings, the lens module further comprises a fixed plate 400, and the movable part 200 further comprises a side plate 220, the fixed plate 400 and the side plate 220 are arranged on the side of the movable part 200, and the fixed plate 400 and the side plate 220 are oppositely arranged, and the movable part 200 moves relative to the fixed plate 400 through the side plate 220.

[0047] In some embodiments of the present application, the side plate 220 and the fixed plate 400 are provided with oppositely arranged sliding grooves 221, the sliding grooves 221 are enclosed to form a sliding channel, and the sliding channel is provided with a plurality of rolling balls and / or rolling columns 230.

[0048] For example Figure 2 and Figure 3 As shown in the drawings, the side plate 220 and the fixed plate 400 are provided with oppositely arranged sliding grooves 221, the sliding grooves 221 are enclosed to form a sliding channel, and the sliding channel is provided with a plurality of rolling balls and / or rolling columns 230.

[0049] Further, the lens module further comprises a baffle, the baffle is arranged above the sliding channel, the baffle prevents the ball or the roller 230 from sliding out of the sliding channel, and the baffle can limit the movement of the movable part 200 to prevent the movable part 200 from moving too far, thereby playing a limiting role.

[0050] In some embodiments of the present application, the side plate 220 and the fixed plate 400 are embedded with magnetic pieces 410, and the side plate 220 and the fixed plate 400 are abutted together by the magnetic force of the magnetic pieces 410. The side plate 220 and the fixed plate 400 are embedded with magnetic pieces 410, and the side plate 220 and the fixed plate 400 can be abutted together by the magnetic force of the magnetic pieces 410, and the mutual movement between the side plate 220 and the side wall of the lens barrel 100 is realized by the ball, the roller 230 or the bearing. The side plate 220 is tightly attached to the side wall of the lens barrel 100 by the magnetic force of the magnetic pieces 410, and the driving assembly is installed on the outer side wall of the lens barrel 100, so that the driving assembly can conveniently drive the movable part 200.

[0051] Further, the lens module further comprises a Hall sensor 321, for example Figure 4 As shown, the Hall sensor 321 is arranged on the magnetic body 320, and the Hall sensor 321 is used to sense the positional relationship between the coil 310 and the magnetic body 320. The change of the magnetic flux on the coil 310 can be detected by the Hall sensor 321, so as to sense the positional relationship between the coil 310 and the magnetic body 320, thereby facilitating the control of the position of the movable part 200 by the lens module.

[0052] Further, the lens module further comprises a flexible circuit board 500, for example Figure 2 、 Figure 3 and Figure 4 As shown, one end of the flexible circuit board 500 is connected with the image sensor, and the other end is used to be connected with the mainboard of the camera equipment. After the image sensor receives the image signal transmitted by the lens assembly, the image signal is converted into an electric signal and transmitted to the mainboard of the camera equipment through the flexible circuit board 500. The part of the flexible circuit board 500 connected with the image sensor is arranged in an S-shaped bending mode, so that when the electromagnetic driving assembly drives the movable part 200 to move up and down, the part of the flexible circuit board 500 connected with the image sensor can move together with the image sensor, and the S-shaped bending part of the flexible circuit board 500 can reserve a certain length for the movement of the flexible circuit board 500, thereby not affecting the connection relationship with the mainboard of the camera equipment.

[0053] Further, the lens module further comprises a housing 600, for example Figure 1 As shown, the housing 600 frames the components such as the fixed plate 400, the movable part 200 and the lens barrel 100.

[0054] The camera device according to the second aspect of the present application comprises the lens module according to the first aspect of the present application.

[0055] The camera device according to the present application has small size and occupies small space, and can meet the demand of thin and small camera module or camera device.

[0056] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A lens module, characterized in that, The utility model relates to a lens module and a camera, and relates to the technical field of cameras. The utility model discloses a lens barrel (100) is arranged with containing space in, movable part (200) is used for carrying image sensor, movable part (200) is used for carrying the part of image sensor is located below containing space; Electromagnetic drive assembly includes coil (310) and magnetic body (320), electromagnetic drive assembly is arranged below containing space, electromagnetic drive assembly drives movable part (200) to move through the Lorentz force or magnetic force between the coil (310) energization generation magnetic field and magnetic body (320) and drives image sensor to move; Fixed plate (400), movable part (200) still includes side plate (220), fixed plate (400) and side plate (220) are arranged on the side of movable part (200) and are oppositely arranged, movable part (200) moves through side plate (220) relative to fixed plate (400), the side plate (220) and the fixed plate (400) are oppositely arranged with the slide groove (221) on, the slide groove (221) is enclosed and forms a slide, the slide is provided with ball and / or roller (230); Housing (600), the housing (600) is arranged with lens barrel (100), movable part (200), electromagnetic drive assembly and fixed plate (400); Movable part (200) includes carrying plate (210), carrying plate (210) is located at the bottom of containing space, carrying plate (210) is used for carrying image sensor, and electromagnetic drive assembly drives carrying plate (210) to move and drives image sensor to move. The coil (310) is fixedly arranged above the carrying plate (210), and the magnetic body (320) is provided with two and is fixedly arranged on both sides of the coil (310) respectively.

2. The lens module according to claim 1, wherein, The surface of the magnetic body (320) on both sides of the coil (310) towards the coil (310) is one positive pole, and the other is negative pole.

3. The lens module according to claim 2, wherein, The coil (310) is fixedly arranged below the carrying plate (210), and the magnetic body (320) is connected with the bottom of the movable part (200) and is located above the coil (310).

4. The lens module according to claim 1, wherein, The surface of the magnetic body (320) towards the coil (310) is negative pole or positive pole.

5. The lens module according to claim 4, wherein, The side plate (220) and the fixed plate (400) are embedded with magnetic pieces (410), and the side plate (220) and the fixed plate (400) are abutted together through the magnetic force of the magnetic pieces (410).

6. The lens module according to claim 1, wherein, The utility model discloses a lens module and a camera, and relates to the technical field of cameras.

7. An image pickup apparatus characterized by comprising: The utility model relates to a lens barrel (100) is arranged with containing space in, movable part (200) is used for carrying image sensor, movable part (200) is used for carrying the part of image sensor is located below containing space; Electromagnetic drive assembly includes coil (310) and magnetic body (320), electromagnetic drive assembly is arranged below containing space, electromagnetic drive assembly drives movable part (200) to move through the Lorentz force or magnetic force between the coil (310) energization generation magnetic field and magnetic body (320) and drives image sensor to move; Fixed plate (400), movable part (200) still includes side plate (220), fixed plate (400) and side plate (220) are arranged on the side of movable part (200) and are oppositely arranged, movable part (200) moves through side plate (220) relative to fixed plate (400), the side plate (220) and the fixed plate (400) are oppositely arranged with the slide groove (221) on, the slide groove (221) is enclosed and forms a slide, the slide is provided with ball and / or roller (230); Housing (600), the housing (600) is arranged with lens barrel (100), movable part (200), electromagnetic drive assembly and fixed plate (400); Movable part (200) includes carrying plate (210), carrying plate (210) is located at the bottom of containing space, carrying plate (210) is used for carrying image sensor, and electromagnetic drive assembly drives carrying plate (210) to move and drives image sensor to move. The coil (310) is fixedly arranged above the carrying plate (210), and the magnetic body (320) is provided with two and is fixedly arranged on both sides of the coil (310) respectively. The surface of the magnetic body (320) on both sides of the coil (310) towards the coil (310) is one positive pole, and the other is negative pole. The coil (310) is fixedly arranged below the carrying plate (210), and the magnetic body (320) is connected with the bottom of the movable part (200) and is located above the coil (310). The surface of the magnetic body (320) towards the coil (310) is negative pole or positive pole. The side plate (220) and the fixed plate (400) are embedded with magnetic pieces (410), and the side plate (220) and the fixed plate (400) are abutted together through the magnetic force of the magnetic pieces (410). The utility model discloses a lens module and a camera, and relates to the technical field of cameras. The utility model relates to a lens barrel (100) is arranged with containing space in, movable part (200) is used for carrying image sensor, movable part (200) is used for carrying the part of image sensor is located below containing space; Electromagnetic drive assembly includes coil (310) and magnetic body (320), electromagnetic drive assembly is arranged below containing space, electromagnetic drive assembly drives movable part (200) to move through the Lorentz force or magnetic force between the coil (310) energization generation magnetic field and magnetic body (320) and drives image sensor to move; Fixed plate (400), movable part (200) still includes side plate (220), fixed plate (400) and side plate (220) are arranged on the side of movable part (200) and are oppositely arranged, movable part (200) moves through side plate (220) relative to fixed plate (400), the side plate (220) and the fixed plate (400) are oppositely arranged with the slide groove (221) on, the slide groove (221) is enclosed and forms a slide, the slide is provided with ball and / or roller (230); Housing (600), the housing (600) is arranged with lens barrel (100), movable part (200), electromagnetic drive assembly and fixed plate (400); Movable part (200) includes carrying plate (210), carrying plate (210) is located at the bottom of containing space, carrying plate (210) is used for carrying image sensor, and electromagnetic drive assembly drives carrying plate (210) to move and drives image sensor to move.

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