Camera module and electronic device

Abstract

The application provides a camera module and an electronic device. The camera module comprises: a lens unit; a chip unit arranged below the lens unit and spaced apart from the lens unit; a driving assembly arranged on one side of the chip unit, which provides a driving force for moving the lens unit and the chip unit after being energized; and a transmission assembly connected to the driving assembly, which comprises a first transmission member, a second transmission member and a reverse transmission member. The driving assembly is in transmission connection with the first transmission member or the second transmission member. The first transmission member is in transmission connection with the chip unit and is connected to the second transmission member through the reverse transmission member. The second transmission member is in transmission connection with the lens unit. The reverse transmission member moves the first transmission member and the second transmission member in opposite directions, so that the lens unit and the chip unit move towards or away from each other at the same time, the movement time in the focusing process is reduced, fast focusing is achieved, and the focusing efficiency is improved.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment technology, and in particular relates to a camera module and electronic equipment. Background Technology

[0002] Camera modules are commonly used in various electronic devices. During use, camera modules typically require focus adjustment to achieve clear images of the subject. Conventional camera modules adjust focus using a combination of magnets and coils to drive the lens. This involves energizing the coil and having it work in conjunction with the magnet to generate a force that moves the lens unidirectionally towards or away from the chip, thus enabling the camera module to focus. However, this focus adjustment method using coils and magnets has a limited range of motion, making it difficult to perform large-scale focus adjustments. Furthermore, when the range is long, the existing method requires a considerable amount of time to move the lens towards or away from the chip, resulting in long focusing times and an inability to focus quickly. Summary of the Invention

[0003] This application aims to at least partially solve the technical problem of excessively long focusing time. To this end, this application provides a camera module and electronic device.

[0004] In a first aspect, an embodiment of this application provides a camera module, the camera module comprising:

[0005] Lens unit;

[0006] A chip unit is disposed below the lens unit and spaced apart from it. The camera module achieves focus by adjusting the distance between the lens unit and the chip unit.

[0007] A driver assembly is disposed on one side of the chip unit, and the driver assembly provides a driving force for the lens unit and the chip unit to move when powered on;

[0008] A transmission assembly is connected to the drive assembly. The transmission assembly includes a first transmission member, a second transmission member, and a reverse transmission member. The driver is driven by either the first or the second transmission member. The first transmission member is driven by the chip unit and is connected to the second transmission member via the reverse transmission member. The second transmission member is driven by the lens unit. The reverse transmission member enables the first and second transmission members to move in opposite directions, so that the lens unit and the chip unit move simultaneously toward or away from each other for focusing.

[0009] When the camera module needs to focus, after the drive component is powered on, it can drive the first transmission component and the second transmission component to move. The first transmission component can drive the chip unit to move, and the second transmission component can drive the lens unit to move. This allows the lens unit and the chip unit to move towards or away from each other simultaneously, which can reduce the movement of the lens unit in the prior art, reduce the movement time in the focusing process, achieve fast focusing, and improve focusing efficiency.

[0010] In an optional embodiment of this application, taking the central optical axis of the camera module as a reference, under the condition that the driver is connected to the first transmission member and the driving component drives the first transmission member to rotate, the reverse transmission member can drive the second transmission member to rotate in the opposite direction to the rotation direction of the first transmission member, so that the lens unit and the chip unit move towards or away from each other at the same time.

[0011] In an optional embodiment of this application, the first transmission member and the second transmission member are at least partially overlapped, and the reverse transmission member is disposed between the first transmission member and the second transmission member.

[0012] In an optional embodiment of this application, the reverse transmission component includes a first connecting gear, a second connecting gear, and a reverse connecting gear. The first connecting gear is fixedly connected to the first transmission component, the second connecting gear is fixedly connected to the second transmission component, and the reverse connecting gear is disposed between the first connecting gear and the second connecting gear and is in a transmission connection with the first connecting gear and the second connecting gear.

[0013] In an optional embodiment of this application, both the end faces of the first connecting gear and the second connecting gear are provided with transmission teeth. The transmission teeth of the first connecting gear and the transmission teeth of the second connecting gear are positioned opposite each other. The reverse connecting gear meshes with the transmission teeth of the first connecting gear and the transmission teeth of the second connecting gear respectively, so that the first connecting gear and the second connecting gear rotate in opposite directions.

[0014] In an optional embodiment of this application, the first transmission component includes a first transmission gear and a first rotating sleeve. The first transmission gear is connected to the drive assembly, and the first rotating sleeve is sleeved on the chip unit. Under the condition that the first transmission gear drives the first rotating sleeve to rotate, the first rotating sleeve can drive the chip unit to move towards or away from the lens unit.

[0015] In an optional embodiment of this application, the first rotating sleeve has an inclined first abutting surface, and the chip unit has a first abutting part. When the first rotating sleeve rotates, the first abutting surface abuts against the first abutting part, causing the chip unit to move toward or away from the lens unit.

[0016] The chip unit is provided with a first limiting part, and the first rotating sleeve is provided with a first guiding part. The first limiting part cooperates with the first guiding part, and the first limiting part is correspondingly engaged with the first guiding part, so that the chip unit can form a guiding and limiting function when moving towards or away from the lens unit.

[0017] In an optional embodiment of this application, the second transmission component includes a second transmission gear and a second rotating sleeve. The second transmission gear is connected to the drive assembly, and the second rotating sleeve is sleeved on the chip unit. Under the condition that the second transmission gear drives the second rotating sleeve to rotate, the second rotating sleeve can drive the chip unit to move towards or away from the lens unit.

[0018] In an optional embodiment of this application, the second rotating sleeve has an inclined second abutting surface, and the chip unit has a second abutting part. When the second rotating sleeve rotates, the second abutting surface abuts against the second abutting part, causing the chip unit to move toward or away from the lens unit.

[0019] The chip unit is provided with a second limiting part, and the second rotating sleeve is provided with a second guiding part. The second limiting part and the second guiding part cooperate with each other, and the second limiting part is correspondingly engaged with the second guiding part. The second rotating sleeve can guide and limit the movement of the lens unit towards or away from the chip unit.

[0020] Secondly, embodiments of this application provide an electronic device including the camera module provided in the first aspect, the electronic device further including at least one processor, the at least one processor being configured to process image information generated from the camera module.

[0021] The beneficial effects of the electronic device provided in the second aspect are the same as those of the camera module provided in the first aspect. By using the camera module provided in the first aspect, the movement distance of the lens is shortened, the movement time of the camera module during the focusing process is reduced, fast focusing is achieved, and focusing efficiency is improved. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the first view of the camera module provided in the first embodiment of this application is shown.

[0024] Figure 2 A schematic diagram of the second perspective of the camera module provided in the first embodiment of this application is shown.

[0025] Figure 3 The camera module provided in the first embodiment of this application is shown in Figure 2 A magnified view of section III in the middle.

[0026] Figure 4 A schematic diagram of the structure of the first rotating sleeve and chip unit of the camera module provided in the first embodiment of this application is shown.

[0027] Figure 5 A schematic diagram of the structure of the second rotating sleeve and lens unit of the camera module provided in the first embodiment of this application is shown.

[0028] Reference numerals: 100-Camera module, 110-Lens unit, 112-Second limiting part, 114-Second supporting part, 120-Chip unit, 121-First limiting part, 123-First supporting part, 130-Driver, 140-Transmission assembly, 141-First transmission member, 141a-First transmission gear, 141b-First rotating sleeve, 141c-First guide part, 141d-First supporting surface, 143-Second transmission member, 143a-Second transmission gear, 143b-Second rotating sleeve, 143c-Second guide part, 143d-Second supporting surface, 145-Reverse transmission member, 145a-First connecting gear, 145b-Second connecting gear, 145c-Reverse connecting gear. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0033] Camera modules are commonly used in various electronic devices. During use, camera modules typically require focus adjustment to achieve clear imaging of the subject. Conventional camera modules adjust focus using a combination of magnets and coils to drive the lens. This involves energizing the coil, which interacts with the magnet to move the lens closer to or away from the chip, thus performing the focusing operation. However, this coil-and-magnet method has limited lens movement distance, making it difficult to perform large-scale focusing adjustments. Furthermore, when the distance is large, the existing method requires a considerable amount of time to move the lens closer to or away from the chip, resulting in long focusing times and slow focusing speeds. The camera module and electronic device provided in this application address these issues. They reduce the focusing time between the lens unit and the chip unit, shorten the lens unit's movement distance during focusing, and achieve fast focusing.

[0034] This application is described below with reference to the accompanying drawings and specific embodiments:

[0035] First Embodiment

[0036] Please see Figure 1 and Figure 2 This embodiment provides a camera module 100, which is applied to electronic devices. The camera module 100 can reduce the movement time during the focusing process, achieve fast focusing, and improve focusing efficiency.

[0037] In this embodiment, the camera module 100 includes:

[0038] Lens unit 110;

[0039] Chip unit 120 is disposed below lens unit 110 and spaced apart from lens unit 110. Camera module 100 achieves focusing by adjusting the distance between lens unit 100 and chip unit 120.

[0040] The drive assembly 130 is disposed on one side of the chip unit 120. When the drive assembly 130 is powered on, it provides the driving force for the lens unit 100 and the chip unit 120 to move.

[0041] A transmission assembly 140 is connected to a drive assembly 130. The transmission assembly 140 includes a first transmission member 141, a second transmission member 143, and a reverse transmission member 145. The drive assembly 130 is drivenly connected to either the first transmission member 141 or the second transmission member 143. The first transmission member 141 is drivenly connected to the chip unit 120. The first transmission member 141 is connected to the second transmission member 143 via the reverse transmission member 145, and the reverse transmission member 145 is located between the first transmission member 141 and the second transmission member 143. The second transmission member 143 is drivenly connected to the lens unit 110. The reverse transmission member 145 enables the first transmission member 141 and the second transmission member 143 to move in opposite directions, so that the lens unit 110 and the chip unit 120 move simultaneously toward or away from each other, thereby achieving focusing of the camera module 100.

[0042] In this embodiment, during the focusing process of the camera module 100, firstly, the driving component 130 of the camera module 100 is powered on and operates. The driving component 130 provides a driving force for the lens unit 110 and the chip unit 120 to move simultaneously toward or away from each other. The driving component 130 drives the first transmission member 141 to rotate. Secondly, the first transmission member 141 synchronously drives the reverse transmission member 145 to rotate. Because the first transmission member 141 is connected to the second transmission member 143 through the reverse transmission member 145, and the reverse transmission member 145 is located between the first transmission member 141 and the second transmission member 143, therefore... The reverse transmission component 145 can synchronously drive the second transmission component 143 to rotate. Then, because the first transmission component 141 drives the chip unit 120 to move and the second transmission component 143 drives the lens unit 110 to move, the reverse transmission component 145 enables the lens unit 110 and the chip unit 120 to move simultaneously toward or away from each other. Compared with the existing technology where the camera module only moves the lens toward or away from the chip during focusing, this camera module 100 can shorten the lens's movement distance, reduce the movement time during focusing, achieve fast focusing, and improve focusing efficiency.

[0043] The reverse transmission member 145 is rotatably connected to the first transmission member 141 and the second transmission member 143, enabling the first transmission member 141 and the second transmission member 143 to move in opposite directions. With the central optical axis of the camera module 100 as a reference, when the first transmission member 141 drives the chip unit 120 to rotate in a clockwise direction around the central optical axis, the second transmission member 143 drives the lens unit 110 to rotate in a counterclockwise direction around the central optical axis, thereby driving the lens unit 110 and the chip unit 120 to move in opposite directions.

[0044] In this embodiment, the drive assembly 130 is driveably connected to either the first transmission member 141 or the second transmission member 143. In this example, the drive assembly 130 is driven by the first transmission member 141. Movement of the first transmission member 141 drives movement of the reverse transmission member 145, thereby causing the second transmission member 143 to move in the opposite direction relative to the first transmission member 141. In another embodiment, the drive assembly 130 can be driveably connected to the second transmission member 143. Movement of the second transmission member 143 drives movement of the reverse transmission member 145, thereby causing the first transmission member 141 to move in the opposite direction relative to the second transmission member 143.

[0045] The drive component 130 works in conjunction with the transmission component 140 to enable the lens unit 110 and the chip unit 120 to move towards each other or away from each other simultaneously. In this embodiment, the drive component 130 can drive the transmission component 140 to move simultaneously, thereby reducing the number of components in the entire camera module 100 and reducing the overall size of the camera module 100, thus reducing manufacturing costs.

[0046] In this embodiment, when the drive assembly 130 is connected to the first transmission member 141 and the drive assembly 130 drives the first transmission member 141 to rotate, the reverse transmission member 145 can drive the second transmission member 143 to rotate in the opposite direction to the rotation direction of the first transmission member 141, causing the lens unit 110 and the chip unit 120 to move simultaneously closer to or further away from each other. The method of connecting the driver 130 and the second transmission member 143 can be referred to the method of connecting the driver 130 and the first transmission member 141, and so on.

[0047] The drive assembly 130 drives the first transmission member 141 to rotate, which in turn drives the reverse transmission member 145 to rotate. Under the action of the reverse transmission member 145, the second transmission member 143 rotates in the opposite direction to the first transmission member 141, so that the lens unit 110 and the chip unit 120 can move in opposite directions, moving towards each other or away from each other at the same time. This reduces the movement time during the focusing process and improves focusing efficiency.

[0048] In this embodiment, the first transmission member 141 and the second transmission member 143 are at least partially overlapped, and the reverse transmission member 145 is disposed between the first transmission member 141 and the second transmission member 143.

[0049] The fact that the first transmission member 141 and the second transmission member 143 are at least partially overlapped means that the projection of the first transmission member 141 toward the second transmission member 143 can partially overlap with the second transmission member 143. This arrangement can reduce the space occupied by the first transmission member 141 and the second transmission member 143 in the extension direction of the lens unit 110, making the layout inside the entire camera module 100 more compact and reducing the volume of the camera module 100.

[0050] The lens unit 110 is approximately cylindrical, and the chip unit 120 is also approximately cylindrical. The lens unit 110 and the chip unit 120 are positioned opposite each other and spaced apart. When assembling the lens unit 110 and the chip unit 120, their central axes coincide, and they are coaxially arranged. The first transmission member 141 is arranged side by side with the chip unit 120, and similarly, the second transmission member 143 is arranged side by side with the lens unit 110.

[0051] In this embodiment, the first transmission member 141, the reverse transmission member 145, and the second transmission member 143 are connected by gears, thereby improving the transmission stability between the first transmission member 141 and the reverse transmission member 145, and between the reverse transmission member 145 and the second transmission member 143.

[0052] Similarly, the reverse transmission member 145 is disposed between the first transmission member 141 and the second transmission member 143, so that the first transmission member 141, the reverse transmission member 145 and the second transmission member 143 are disposed in the same extending direction, which can reduce the space occupied by the entire transmission assembly 140 in the extending direction of the lens unit 110, making the internal layout of the entire camera module 100 more compact and reducing the size of the camera module 100.

[0053] Please see Figure 3 In this embodiment, the reverse transmission member 145 includes a first connecting gear 145a, a second connecting gear 145b, and a reverse connecting gear 145c. The first connecting gear 145a is fixedly connected to the first transmission member 141, the second connecting gear 145b is fixedly connected to the second transmission member 143, and the reverse connecting gear 145c is disposed between the first connecting gear 145a and the second connecting gear 145b and is connected to the first connecting gear 145a and the second connecting gear 145b in a transmission connection. In this embodiment, the position of the reverse connecting gear 145c in the camera module 100 is fixed, and the reverse connecting gear 145c only rotates on its own axis.

[0054] During the rotation of the first transmission member 141, the first connecting gear 145a rotates in the same direction as the first transmission member 141. The first connecting gear 145a is connected to the reverse connecting gear 145c, causing the second connecting gear 145b to rotate in the opposite direction to the first connecting gear 145a. Since the second connecting gear 145b is fixedly connected to the second transmission member 143, the second transmission member 143 rotates in the same direction as the second connecting gear 145b, causing the first transmission member 141 and the second transmission member 143 to rotate in opposite directions, and causing the lens unit 110 and the chip unit 120 to move in opposite directions.

[0055] In this embodiment, the end face of the first connecting gear 145a is provided with transmission teeth, and the end face of the second connecting gear 145b is also provided with transmission teeth. The transmission teeth of the first connecting gear 145a and the transmission teeth of the second connecting gear 145b are positioned opposite each other. The reverse connecting gear 145c is disposed between the first connecting gear 145a and the second connecting gear 145b, and meshes with the transmission teeth of the first connecting gear 145a and the second connecting gear 145b respectively, thereby realizing the reverse rotation between the first connecting gear 145a and the second connecting gear 145b, so that the first transmission member 141 and the second transmission member 143 can rotate in opposite directions.

[0056] The transmission teeth of the first connecting gear 145a are located on the side of the first connecting gear 145a away from the first transmission member 141, and the transmission teeth of the second connecting gear 145b are located on the side of the second connecting gear 145b away from the second transmission member 143.

[0057] The transmission teeth of the first connecting gear 145a being located on the side of the first connecting gear 145a away from the first transmission member 141 means that the transmission teeth of the first connecting gear 145a are located on the end face of the first connecting gear 145a, rather than on the peripheral wall of the first connecting gear 145a. Similarly, the transmission teeth of the second connecting gear 145b being located on the side of the second connecting gear 145b away from the second transmission member 143 means that the transmission teeth of the second connecting gear 145b are located on the end face of the second connecting gear 145b, rather than on the peripheral wall of the second connecting gear 145b.

[0058] In this embodiment, the first connecting gear 145a and the second connecting gear 145b are at least overlapped. The projection of the first connecting gear 145a toward the second connecting gear 145b can partially overlap with the second connecting gear 145b. This arrangement can reduce the space occupied by the first connecting gear 145a and the second connecting gear 145b in the extension direction of the lens unit 110, making the layout inside the entire camera module 100 more compact and reducing the volume of the camera module 100.

[0059] Please see Figure 1 and Figure 2 In this embodiment, the first transmission component 141 includes a first transmission gear 141a and a first rotating sleeve 141b. The first transmission gear 141a is connected to the drive assembly 130. The first rotating sleeve 141b is sleeved on the chip unit 120. Under the condition that the first transmission gear 141a drives the first rotating sleeve 141b to rotate, the first rotating sleeve 141b can drive the chip unit 120 to move towards or away from the lens unit 110.

[0060] The first connecting gear 145a is fixedly connected to the first transmission gear 141a, and the first connecting gear 145a and the first transmission gear 141a are coaxially arranged to achieve coaxial rotation. While the first connecting gear 145a drives the first rotating sleeve 141b to rotate, the first connecting gear 145a and the first transmission gear 141a rotate coaxially and in the same direction.

[0061] Furthermore, the travel of the chip unit 120 is limited. The first rotating sleeve 141b can be partially equipped with transmission teeth. The first rotating sleeve 141b can be considered as an incomplete gear. The curvature of the transmission teeth on the first rotating sleeve 141b can be set according to the extreme positions of the chip unit 120 in two directions, one near the lens unit 110 and the other far from the lens unit 110, so that the chip unit 120 can reach these two extreme positions.

[0062] It is easy to understand that the first transmission gear 141a is connected to the first rotating sleeve 141b in a transmission connection. The outer circumferential surface of the first rotating sleeve 141b is provided with transmission teeth. The transmission teeth of the first transmission gear 141a and the first rotating sleeve 141b mesh with each other to realize the transmission connection between the first transmission gear 141a and the first rotating sleeve 141b.

[0063] Please see Figure 4 In this embodiment, a first limiting part 121 is provided on the chip unit 120, and a first guiding part 141c is provided on the first rotating sleeve 141b. The first limiting part 121 cooperates with the first guiding part 141c, and the first limiting part 121 is correspondingly inserted into the first guiding part 141c, so that the chip unit 120 moves towards or away from the lens unit 110 and forms a guiding and limiting function.

[0064] Specifically, the first limiting part 121 is a protrusion provided on the chip unit 120, and the first guiding part 141c is an inwardly recessed groove provided on the inner wall of the first rotating sleeve 141b. The protrusion can be engaged in the inwardly recessed groove, and the protrusion is slidably disposed in the groove. During the rotation of the first rotating sleeve 141b, the protrusion is engaged in the groove and slides in the groove, so that the chip unit 120 can move closer to or away from the lens unit 110.

[0065] During the rotation of the first rotating sleeve 141b, the inwardly recessed sidewall on the first guide portion 141c can resist the first limiting portion 121 to move towards or away from the lens unit 110, thereby improving the stability of the movement of the chip unit 120.

[0066] In other words, in this embodiment, the rotation of the first rotating sleeve 141b can be converted into the guiding movement and limiting of the image sensor carried on the chip unit 120 through the cooperation between the first limiting part 121 and the first guiding part 141c.

[0067] In this embodiment, the first rotating sleeve 141b has an inclined first abutting surface 141d, and the chip unit 120 is provided with a first abutting part 123. When the first rotating sleeve 141b rotates, the first abutting surface 141d abuts against the first abutting part 123, thereby providing a pushing force to the chip unit 120 along the inclined wall direction of the first abutting surface 141d, causing the chip unit 120 to move towards or away from the lens unit 110. As for the upward movement of the chip unit 120, it relies on the rotational cooperation of the drive component 130 and the first transmission component 141, as well as the guidance and limitation of the first limiting part 121 corresponding to the engagement of the first guide part 141c, so that the chip unit 120 moves upward towards the lens unit 110. During this process, the first abutting surface 141d does not contact the first abutting part 123.

[0068] The first abutting surface 141d is inclined towards the lens unit 110, and the first abutting part 123 protrudes from the chip unit 120 and abuts against the first abutting surface 141d. When the chip unit 120 moves away from the lens unit 110, the first abutting surface 141d can push the chip unit 120 away from the lens unit 110. When the chip unit 120 moves towards the lens unit 110, the first abutting surface 141d avoids the first abutting part 123, allowing the chip unit 120 to move closer to the lens unit 110.

[0069] Please see Figure 1 and Figure 2 In this embodiment, the second transmission component 143 includes a second transmission gear 143a and a second rotating sleeve 143b. The second transmission gear 143a is connected to the drive assembly 130. The second rotating sleeve 143b is sleeved on the lens unit 110. Under the condition that the second transmission gear 143a drives the second rotating sleeve 143b to rotate, the second rotating sleeve 143b can drive the lens unit 110 to move towards or away from the chip unit 120.

[0070] The second connecting gear 145b is fixedly connected to the second transmission gear 143a. The second connecting gear 145b and the second transmission gear 143a are coaxially arranged to achieve coaxial rotation. While the second connecting gear 145b drives the second rotating sleeve 143b to rotate, the second connecting gear 145b and the second transmission gear 143a rotate coaxially and in the same direction.

[0071] Furthermore, the travel of the lens unit 110 is limited. The second rotating sleeve 143b can be partially equipped with transmission teeth. The second rotating sleeve 143b can be considered as an incomplete gear. The curvature of the transmission teeth on the second rotating sleeve 143b can be set according to the extreme positions of the lens unit 110 in two directions, close to the chip unit 120 and far away from the chip unit 120, so that the lens unit 110 can reach these two extreme positions.

[0072] It is easy to understand that the second transmission gear 143a is connected to the second rotating sleeve 143b in a transmission connection. The outer circumferential surface of the second rotating sleeve 143b is provided with transmission teeth. The transmission teeth of the second transmission gear 143a and the second rotating sleeve 143b mesh with each other to realize the transmission connection between the second transmission gear 143a and the second rotating sleeve 143b.

[0073] Please see Figure 5 In this embodiment, the lens unit 110 is provided with a second limiting part 112, and the second rotating sleeve 143b is provided with a second guiding part 143c. The second limiting part 112 and the second guiding part 143c cooperate with each other, and the second limiting part 112 is correspondingly engaged with the second guiding part 143c, so that the lens unit 110 moves towards or away from the chip unit 120 and forms a guiding and limiting function.

[0074] Specifically, the second limiting part 112 is a protrusion provided on the lens unit 110, and the second guide part 143c is an inwardly recessed groove provided on the inner wall of the second rotating sleeve 143b. The protrusion can be engaged in the inwardly recessed groove. The protrusion is slidably disposed in the groove. During the rotation of the second rotating sleeve 143b, the protrusion is engaged in the groove and slides in the groove, so that the lens unit 110 can move closer to or away from the chip unit 120.

[0075] During the rotation of the second rotating sleeve 143b, the inwardly recessed sidewall of the second guide portion 143c can resist the second limiting portion 112 to move towards or away from the chip unit 120, thereby improving the stability of the movement of the lens unit 110.

[0076] In other words, in this embodiment, the rotation of the second rotating sleeve 143b can be converted into the guiding movement and limiting of the lens carried on the lens unit 110 through the cooperation between the second limiting part 112 and the second guiding part 143c.

[0077] In this embodiment, the second rotating sleeve 143b has an inclined second abutment surface 143d, and the chip unit 120 is provided with a second abutment portion 114. When the second rotating sleeve 143b rotates, the second abutment surface 143d abuts against the second abutment portion 114, thereby providing a pushing force to the lens unit 110 along the inclined wall direction of the second abutment surface 143d, causing the lens unit 110 to move towards or away from the chip unit 120. As for the downward movement of the lens unit 110, it relies on the cooperation of the drive assembly 130, the first transmission member 141, the reverse transmission member 145, and the second transmission member 143, as well as the second limiting portion 112 correspondingly engaging with the second guide portion 143c, so that the lens unit 110 moves downward towards the chip unit 120. During this process, the second abutment surface 143d does not contact the second abutment portion 114.

[0078] The second abutting surface 143d is inclined towards the chip unit 120, and the second abutting portion 114 protrudes from the lens unit 110 and abuts against the second abutting surface 143d. When the lens unit 110 moves away from the chip unit 120, the second abutting surface 143d can push the lens unit 110 away from the chip unit 120. When the lens unit 110 moves towards the chip unit 120, the second abutting surface 143d avoids the second abutting portion 114, allowing the lens unit 110 to move closer to the chip unit 120.

[0079] In this embodiment, the first guide portion 141c is spiral-shaped, and the second guide portion 143c is also spiral-shaped, with the first guide portion 141c and the second guide portion 143c having the same spiral direction.

[0080] Because the first transmission gear 141a and the second transmission gear 143a rotate in opposite directions, the first rotating sleeve 141b and the second rotating sleeve 143b also rotate in opposite directions. Since the first guide portion 141c and the second guide portion 143c rotate in the same direction, the chip unit 120 and the lens unit 110 can always maintain opposite movements, that is, they can move simultaneously towards or away from each other. By simultaneously adjusting the first gear ratio on the first transmission gear 141a and the first rotating sleeve 141b, and the second gear ratio on the second transmission gear 143a and the second rotating sleeve 143b, the movement speed of the lens unit 110 and the chip unit 120 can be adjusted.

[0081] In summary, the operating principle of the camera module 100 provided in this embodiment regarding the movement of the chip unit 120 and the lens unit 110 away from each other is as follows: the drive component 130 is powered on and rotates forward, driving the first transmission component 141 to rotate in the opposite direction. The first transmission gear 141a meshes with the transmission teeth on the first rotating sleeve 141b, driving the first rotating sleeve 141b to rotate forward. Since the first abutting surface 141d is inclined, the first abutting surface 141d abuts against the first abutting part 123 and moves downward, causing the chip unit 120 to move downward. On the other hand, during the rotation of the first transmission member 141, the first connecting gear 145a and the first transmission member 141 rotate in opposite directions. The first connecting gear 145a is rotatably connected to the reverse connecting gear 145c, causing the second connecting gear 145b to rotate in the forward direction with the first connecting gear 145a. Since the second connecting gear 145b and the second transmission gear 143a are fixedly connected, the second transmission gear 143a and the second connecting gear 145b rotate in the same direction, which is also in the forward direction. The second transmission gear 143a meshes with the second rotating sleeve 143b, so the second rotating sleeve 143b rotates in the opposite direction. Since the second abutting surface 143d is inclined, the second abutting surface 143d abuts against the second abutting part 114 and moves upward, causing the lens unit 110 to move upward, thereby causing the chip unit 120 and the lens unit 110 to move away from each other.

[0082] Furthermore, the operating principle of the chip unit 120 and the lens unit 110 moving towards each other is as follows: If the drive component 130 is powered on and reversed, it drives the first transmission component 141 to rotate in the forward direction. The first transmission gear 141a meshes with the transmission teeth on the first rotating sleeve 141b, driving the first rotating sleeve 141b to rotate in the reverse direction. The first abutting surface 141d is set at an angle. Relying on the rotational cooperation of the drive component 130 and the first transmission component 141, as well as the guidance and limitation of the first limiting part 121 correspondingly engaging with the first guide part 141c, the chip unit 120 can move upward towards the lens unit 110. During this process, the first abutting surface 141d avoids the first abutting part 123. On the other hand, during the rotation of the first transmission member 141, both the first connecting gear 145a and the first transmission member 141 rotate in the forward direction. The first connecting gear 145a is rotatably connected to the reverse connecting gear 145c, causing the second connecting gear 145b to rotate in the opposite direction to the first connecting gear 145a. Since the second connecting gear 145b is fixedly connected to the second transmission gear 143a, the second transmission gear 143a rotates in the same direction as the second connecting gear 145b, which is also in the opposite direction. The second transmission gear 143a and the second... When the rotating sleeve 143b engages, the second rotating sleeve 143b rotates in the forward direction. The second abutting surface 143d is tilted. Relying on the cooperation of the drive assembly 130, the first transmission member 141, the reverse transmission member 145, and the second transmission member 143, and the corresponding engagement of the second limiting part 112 with the second guide part 143c, the lens unit 110 moves downward toward the chip unit 120. During this process, the second abutting surface 143d avoids the second abutting part 114, thereby causing the chip unit 120 and the lens unit 110 to move toward each other. Therefore, by having the lens unit 110 and the chip unit 120 move toward each other or move away from each other simultaneously, the camera module 100 can reduce the focusing time and improve the focusing speed.

[0083] Second Embodiment

[0084] This embodiment provides an electronic device. The electronic device provided in this embodiment, by using the above-mentioned camera module, can shorten the lens movement distance, reduce the movement time during the focusing process, achieve fast focusing, and improve focusing efficiency.

[0085] For the sake of brevity, any parts not mentioned in this embodiment can be referred to in the first embodiment.

[0086] This embodiment provides an electronic device, including: a camera module 100 as described in the first aspect above, and one or more processors, the one or more processors being configured to process image information generated from the camera module 100.

[0087] The electronic device can be, but is not limited to, smartphones, tablets, smartwatches, e-book readers, in-vehicle cameras, surveillance equipment, medical devices, drones, etc. Specifically, in one embodiment, the electronic device is a smartphone, which includes a mid-frame and an external circuit board. The external circuit board is disposed on the mid-frame and electrically connected to a camera module 100. The camera module 100 is mounted on the mid-frame of the smartphone, and the imaging chip of the camera module 100 is also electrically connected to the external circuit board. The camera module 100 can serve as either a front-facing camera module 100 or a rear-facing camera module 100 for the smartphone.

[0088] The camera module in the above embodiments of this application has the characteristics of telephoto, high image brightness and small size. Therefore, by adopting the above camera module, the electronic device can take into account both telephoto performance and brightness.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

Claims

1. A camera module, characterized in that, The camera module includes: Lens unit; A chip unit is disposed below the lens unit and spaced apart from it. The camera module achieves focus by adjusting the distance between the lens unit and the chip unit. A driving component is disposed on one side of the chip unit, and the driving component provides a driving force for the lens unit and the chip unit to move when powered on; A transmission assembly is connected to the drive assembly. The transmission assembly includes a first transmission member, a second transmission member, and a reverse transmission member. The first transmission member and the second transmission member are at least partially overlapped. The reverse transmission member is disposed between the first transmission member and the second transmission member. The first transmission member is drivenly connected to the chip unit and is also connected to the second transmission member through the reverse transmission member. The second transmission member is drivenly connected to the lens unit. The reverse transmission member enables the first transmission member and the second transmission member to move in opposite directions, so that the lens unit and the chip unit move simultaneously toward or away from each other for focusing. With the central optical axis of the camera module as a reference, under the condition that the driving component is connected to the first transmission component and the driving component drives the first transmission component to rotate, the reverse transmission component can drive the second transmission component to rotate in the opposite direction to the rotation direction of the first transmission component, so that the lens unit and the chip unit move towards or away from each other at the same time. The reverse transmission component includes a first connecting gear, a second connecting gear, and a reverse connecting gear. The first connecting gear is fixedly connected to the first transmission gear of the first transmission component, and the second connecting gear is fixedly connected to the second transmission gear of the second transmission component. The reverse connecting gear is disposed between the first connecting gear and the second connecting gear and is in a transmission connection with the first connecting gear and the second connecting gear. Both the first connecting gear and the second connecting gear have transmission teeth on their end faces. The transmission teeth of the first connecting gear and the transmission teeth of the second connecting gear are positioned opposite each other. The reverse connecting gear meshes with the transmission teeth of the first connecting gear and the transmission teeth of the second connecting gear, so that the first connecting gear and the second connecting gear rotate in opposite directions. The first transmission component includes a first transmission gear and a first rotating sleeve, the first rotating sleeve being sleeved on the chip unit; under the condition that the first transmission gear drives the first rotating sleeve to rotate, the first rotating sleeve can drive the chip unit to move towards or away from the lens unit; The first rotating sleeve has an inclined first abutting surface, and the chip unit has a first abutting part. When the first rotating sleeve rotates, the first abutting surface abuts against the first abutting part, causing the chip unit to move toward or away from the lens unit. The chip unit is provided with a first limiting part, and the first rotating sleeve is provided with a first guiding part. The first limiting part cooperates with the first guiding part, and the first limiting part is correspondingly engaged with the first guiding part, so that the chip unit forms a guiding and limiting function during the process of moving towards or away from the lens unit. The second transmission component includes a second transmission gear and a second rotating sleeve. The second rotating sleeve is sleeved on the lens unit. Under the condition that the second transmission gear drives the second rotating sleeve to rotate, the second rotating sleeve can drive the lens unit to move towards or away from the chip unit. The second rotating sleeve has an inclined second abutment surface, and the lens unit has a second abutment part. When the second rotating sleeve rotates, the second abutment surface abuts against the second abutment part, and the second rotating sleeve can drive the lens unit to move closer to or away from the chip unit. The lens unit has a second limiting part, and the second rotating sleeve has a second guide part. The second limiting part cooperates with the second guide part, and the second limiting part is correspondingly engaged with the second guide part. The second rotating sleeve can guide and limit the movement of the lens unit closer to or away from the chip unit.

2. An electronic device, characterized in that, Including the camera module as described in claim 1, the electronic device further includes at least one processor, the at least one processor being configured to process image information generated from the camera module.

Images