Camera module and terminal equipment

Abstract

The utility model relates to a camera module and terminal equipment, and belongs to the technical field of optical imaging. The camera module comprises a prism, a first lens group, a second lens group, an image sensor and a driving mechanism. The prism is provided with an object side surface and an image side surface which are perpendicular to each other, and the object side surface points to the thickness direction of the terminal equipment; the first lens group is positioned on the light incident side of the object side surface and is fixedly connected with the prism; the second lens group and the image sensor are sequentially arranged on the light emitting side of the image side surface; and the driving mechanism is in transmission connection with the prism and is used for driving the prism to move along a first direction or a second direction, the first direction is a direction in which the image side faces point to the image sensor, and the second direction is a direction opposite to the first direction. According to the invention, there is no need to reserve a space for the movement of the prism in the thickness direction of the terminal device, thereby reducing the thickness size of the terminal, and facilitating the light and thin design of the terminal.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of optical imaging technology, and in particular, to a camera module and a terminal device. BACKGROUND

[0002] Nowadays, camera modules have gradually become mainstream configurations of terminal devices such as mobile phones. In order to meet the long-distance shooting needs of consumers, terminal devices usually have a long-focus camera module.

[0003] The long-focus camera module includes multiple lens groups, a driving assembly, and an image sensor. The multiple lens groups are arranged on the light-in side of the image sensor. The driving assembly is used to move the lens groups to adjust the distance between the multiple lens groups, thereby adjusting the overall focal length of the long-focus camera module.

[0004] Currently, in the long-focus camera module, the lens groups are usually moved in the thickness direction of the terminal device. The lens groups need to be reserved with a moving stroke in the thickness direction of the terminal device, which leads to an excessively large thickness size of the terminal device. UTILITY MODEL CONTENT

[0005] The present disclosure provides a camera module and a terminal device, which can solve the technical problems in the related art. The technical solutions of the camera module and the terminal device are as follows.

[0006] In a first aspect, the present disclosure provides a camera module, which includes a prism, a first lens group, a second lens group, an image sensor, and a driving mechanism.

[0007] The prism has a perpendicular object side and an image side. The object side is directed to the thickness direction of the terminal device.

[0008] The first lens group is located on the light-in side of the object side and is fixedly connected with the prism.

[0009] The second lens group and the image sensor are sequentially arranged on the light-out side of the image side.

[0010] The driving mechanism is in transmission connection with the prism and is used to drive the prism to move in a first direction or a second direction. The first direction is a direction in which the image side is directed to the image sensor. The second direction is the reverse direction of the first direction.

[0011] In a possible implementation, the camera module further includes a third lens group. The third lens group is located between the second lens group and the image sensor and is in transmission connection with the driving mechanism.

[0012] The driving mechanism is further used to drive the third lens group to move in the first direction or the second direction. The moving direction of the third lens group is opposite to the moving direction of the prism.

[0013] In a possible implementation, the first lens group is a positive lens group, the third lens group is a positive lens group, and the second lens group is a negative lens group.

[0014] In a possible implementation, the first lens group and the second lens group each include at least one lens.

[0015] In a possible implementation, the optical axis of the second lens group is coaxially arranged with the optical axis of the third lens group.

[0016] In a possible implementation, the prism is bonded to the first lens group.

[0017] In a possible implementation, the focal length of the camera module is within the range of [68mm, 180mm].

[0018] In a second aspect, the present disclosure provides a terminal device including the camera module in the first aspect and possible implementations thereof.

[0019] In a possible implementation, the terminal device has a receiving cavity and a strip-shaped opening connected to each other, the receiving cavity is used to accommodate the prism, the second lens group, the image sensor, and the driving mechanism, the strip-shaped opening is used to accommodate the first lens group and provide space for movement of the first lens group.

[0020] In a possible implementation, the terminal device further includes a partition plate, which is located in the receiving cavity and connected to the first lens group, and is used to cover the gap between the first lens group and the strip-shaped opening.

[0021] The technical solutions provided by the present disclosure have at least the following beneficial effects:

[0022] The present disclosure provides a camera module, in which the driving mechanism can drive the prism to move in a direction perpendicular to the thickness of the terminal device, so as to change the focal length of the camera module and realize zooming. Since the prism moves in the direction perpendicular to the thickness of the terminal device, no space needs to be reserved for the movement of the prism in the thickness direction of the terminal device, thereby reducing the thickness size of the terminal and facilitating the thin design of the terminal.

[0023] It should be understood that the general description above and the detailed description below are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained based on these drawings without creative labor.

[0025] Figure 1 is a structural schematic diagram of a camera module according to an embodiment of the present disclosure;

[0026] Figure 2 is a structural schematic diagram of a camera module according to an embodiment of the present disclosure;

[0027] Figure 3 is a structural schematic diagram of a terminal device according to an embodiment of the present disclosure;

[0028] Figure 4 is a structural schematic diagram of a camera module according to an embodiment of the present disclosure.

[0029] Legend

[0030] 01, camera module; 02, terminal device;

[0031] 1, prism;

[0032] 101, object side; 102, image side;

[0033] 2, first lens group;

[0034] 3, second lens group;

[0035] 4, image sensor;

[0036] 5, driving mechanism;

[0037] 501, slide rail; 502, driving motor;

[0038] 6, third lens group;

[0039] 100, accommodating cavity; 200, strip-shaped opening; 300, partition plate. DETAILED DESCRIPTION

[0040] In order to make the objects, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be further described in detail below with reference to the drawings.

[0041] The present disclosure provides a camera module 01, as shown in Figure 1As shown, the camera module 01 includes a prism 1, a first lens group 2, a second lens group 3, an image sensor 4, and a drive mechanism 5. The prism 1 has an object-side surface 101 and an image-side surface 102 that are perpendicular to each other. The first lens group 2 is located on the light-incident side of the object-side surface 101, and the second lens group 3 and the image sensor 4 are arranged sequentially on the light-outceasing side of the image-side surface 102.

[0042] In this configuration, the object side 101 of the prism 1 points towards the thickness direction of the terminal device, the first mirror group 2 is fixedly connected to the prism 1, and the driving mechanism 5 is driven to move the prism 1 along a first direction or a second direction. The first direction is the direction in which the image side 102 points towards the image sensor 4, and the second direction is the opposite direction of the first direction.

[0043] Using the technical solution provided in this embodiment, the driving mechanism 5 can drive the prism 1 to move in a direction perpendicular to the thickness of the terminal device, thereby changing the focal length of the camera module and achieving zoom. Since the prism 1 moves in a direction perpendicular to the thickness of the terminal device, there is no need to reserve space for the movement of the prism 1 in the thickness direction of the terminal device, thereby reducing the thickness of the terminal and facilitating the thinner and lighter design of the terminal.

[0044] The following is a detailed introduction to the specific structure of the camera module:

[0045] In some possible embodiments, prism 1 may be a triangular prism.

[0046] Prism 1 has a triangular prism structure, and the top face of the triangular prism can be an isosceles right triangle. The two right-angled sides of the isosceles right triangle correspond to the object side 101 and the image side 102, respectively. The object side 101 is perpendicular to the thickness direction of the terminal, and the image side 102 is parallel to the thickness direction of the terminal device.

[0047] In some examples, the drive mechanism 5 includes a slide rail 501 and a drive motor 502. For example... Figure 1 As shown, the slide rail 501 is fixed inside the terminal device and extends along a first direction. The drive motor 502 is mounted on the slide rail 501 and is slidably connected to the slide rail 501. The prism 1 is fixedly connected to the drive motor 502, and the drive motor 502 can slide along the slide rail 501 in the first or second direction to drive the prism 1 to move in the first or second direction.

[0048] For example, the drive motor 502 may be a linear motor.

[0049] In this example, the extension length of the slide rail 501 can be adapted to the travel distance of the prism 1. When the prism 1 requires a larger travel distance, the extension length of the slide rail 501 can be set to be longer; when the prism 1 requires a smaller travel distance, the extension length of the slide rail 501 can be set to be shorter. This improves the space utilization within the terminal device.

[0050] In some possible embodiments, the camera module also includes a third lens group 6.

[0051] In some examples, the third lens group 6 is located between the second lens group 3 and the image sensor 4, and is fixedly connected to the second lens group 3.

[0052] In some examples, the third lens group 6 is connected to the drive assembly to enable the focusing function of the camera module.

[0053] like Figure 2 As shown, the camera module also includes a third lens group 6, which is located between the second lens group 3 and the image sensor 4, and is connected to the drive mechanism 5. The drive mechanism 5 is also used to drive the third lens group 6 to move along a first direction or a second direction, the direction of movement of the third lens group 6 being opposite to the direction of movement of the prism 1.

[0054] See Figure 2 The drive mechanism includes a slide rail 501 and two drive motors 502. The two drive motors 502 are respectively mounted on the slide rail 501 and slidably connected to it. One drive motor 502 is fixedly connected to the prism 1, and the other drive motor 502 is fixedly connected to the third mirror group 6, which is a positive lens. The two drive motors 502 move in opposite directions relative to the slide rail 501, causing the third mirror group 6 and the prism 1 to move in opposite directions.

[0055] In implementation, when the third lens group 6 remains stationary, prism 1 moves along the second direction, increasing the distance from the image side 102 to the image sensor 4. This increases the optical path length of the incident light to the image sensor 4, increasing the overall focal length of the camera module and reducing the size of the light spot illuminating the image sensor 4. Conversely, when prism 1 moves along the first direction, the distance from the image side 102 to the image sensor 4 decreases, reducing the optical path length of the incident light to the image sensor 4. This reduces the overall focal length of the camera module and increases the size of the light spot illuminating the image sensor 4. However, when prism 1 remains stationary, since the third lens group 6 is a positive lens, the light transmitted through it is converged, reducing the size of the light spot illuminating the image sensor 4. Therefore, by setting prism 1 and the third lens group 6 to move in opposite directions, moving the third lens group 6 can make the size of the light spot illuminating the image sensor 4 more consistent, thereby achieving the focusing function of the camera module.

[0056] In some examples, such as Figure 2 As shown, the first lens group 2 and the third lens group 6 are positive lens groups, and the second lens group 3 is a negative lens group.

[0057] Among them, a positive lens group refers to a lens group that converges all transmitted light rays, while a negative lens group refers to a lens group that diverges all transmitted light rays.

[0058] Optionally, the first lens group 2, the second lens group 3, and the third lens group 6 each include at least one lens. When any one of the first lens group 2, the second lens group 3, and the third lens group 6 includes multiple lenses, the relative positions of the multiple lenses in the lens group are fixed.

[0059] It is easy to understand that the first lens group 2, the second lens group 3, and the third lens group 6 are not limited to including only convex lenses or only concave lenses. For example, the first lens group 2, the second lens group 3, and the third lens group 6 may each include at least one convex lens and at least one concave lens. For the first lens group 2 and the third lens group 6, the sum of the converging abilities of the convex lenses within them is greater than the sum of the diverging abilities of the concave lenses within them. For the second lens group 3, the sum of the converging abilities of the convex lenses within them is less than the sum of the diverging abilities of the concave lenses within them.

[0060] In one example, see Figure 2 The first lens group 2 includes a convex lens, the second lens group 3 includes two concave lenses, and the third lens group 6 includes two convex lenses. The optical axes of the two convex lenses in the second lens group 3 are arranged coaxially, and the optical axes of the two concave lenses in the third lens group 6 are arranged coaxially.

[0061] In one example, such as Figure 2 As shown, the optical axes of the second mirror group 3 and the third mirror group 6 are arranged coaxially.

[0062] In this way, the light rays emitted from the side 102 can be projected in a straight line through the second lens group 3 and the third lens group 6 before reaching the image sensor 4, improving the imaging quality of the camera module and enabling the camera module to be miniaturized.

[0063] In some possible embodiments, the first mirror group 2 is fixedly connected to the prism 1.

[0064] like Figure 1 As shown, the first mirror group 2 is attached to the object side 101 of the prism 1 and is fixedly connected to the prism 1. The connection between the first mirror group 2 and the prism 1 can be adhesive or snap-fit, and technicians can set it according to actual needs. This embodiment does not limit this.

[0065] In some possible embodiments, the focal length of the camera module is located in the range of [68mm, 180mm].

[0066] See Figure 2 ,like Figure 2 As shown in the upper part, prism 1 moves to its first extreme position under the drive of drive mechanism 5. At this position, the distance from image side 102 to image sensor 4 is at its maximum, the total optical path of the camera module is at its maximum, and the focal length of the camera module is at its maximum. When prism 1 is in the first extreme position, the focal length of the camera module is 180mm. Figure 2 As shown in the lower part, prism 1 moves to the second extreme position under the drive of drive mechanism 5. At this point, the distance from image side 102 to image sensor 4 is the smallest, the total optical path of the camera module is the smallest, and the focal length of the camera module is the smallest. When prism 1 is in the second extreme position, the focal length of the camera module is 68mm.

[0067] The technical solutions provided in this disclosure have at least the following beneficial effects:

[0068] This disclosure provides a camera module in which a driving mechanism 5 can drive a prism 1 to move in a direction perpendicular to the thickness of the terminal device, thereby changing the focal length of the camera module and achieving zoom. Since the prism 1 moves in a direction perpendicular to the thickness of the terminal device, no space needs to be reserved for the movement of the prism 1 in the thickness direction of the terminal device, thereby reducing the thickness of the terminal and facilitating the design of a thinner and lighter terminal.

[0069] This disclosure also provides a terminal device, which includes the camera module described above.

[0070] In some possible embodiments, such as Figure 2 and Figure 3 As shown, terminal device 02 ( Figure 2 The camera module shown in the terminal device has a connected receiving cavity 100 and a strip opening 200. The receiving cavity 100 is used to receive the prism 1, the second lens group 3, the image sensor 4 and the drive mechanism 5. The strip opening 200 is used to receive the first lens group 2 and provides space for the movement of the first lens group 2.

[0071] Specifically, see Figure 3 The strip-shaped opening 200 is located on the back panel of the terminal device and extends along the width direction of the terminal. The strip-shaped opening 200 is either a rounded rectangle or a racetrack shape. The first lens group 2 is located within the strip-shaped opening 200. The first lens group 2 is cylindrical, and its sidewalls are adapted to the arc segment of the strip-shaped opening 200. For example... Figure 3 As shown in the upper part, the first mirror group 2 is at the second extreme position at this time, as... Figure 3 As shown in the lower half, the first mirror group 2 is at the first extreme position at this time.

[0072] In some possible embodiments, the terminal device 02 also includes a partition 300.

[0073] like Figure 4 As shown, the partition 300 is located inside the receiving cavity 100 and is connected to the first mirror group 2, and is used to cover the gap between the first mirror group 2 and the strip opening 200.

[0074] The partition 300 can be a ring-shaped thin plate structure and is fitted outside the first mirror group 2. The length and width of the partition 300 are greater than the length and width of the strip opening 200, respectively, to ensure that the partition 300 can completely cover the strip opening 200 during the movement of the prism 1, and to prevent light and dust from entering the terminal equipment from the gap between the first mirror group 2 and the strip opening 200.

[0075] For example, the partition 300 can be made of a flexible plastic material, and its color can be black, so as to better absorb stray light.

[0076] In the embodiments of this disclosure, the terminal device can be an electronic device with communication functions such as a smartphone, tablet computer, or laptop computer. This disclosure does not specifically limit the specific technology or device form used in the terminal device.

[0077] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this disclosure.

[0078] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0079] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0080] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0081] It is further understood that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the two components; they can refer to a direct connection between two components without the presence of other components, or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0082] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0083] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following scope of claims.

[0084] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A camera module, characterized in that, The camera module includes a prism (1), a first lens group (2), a second lens group (3), an image sensor (4), and a drive mechanism (5); The prism (1) has an object side (101) and an image side (102) that are perpendicular to each other, and the object side (101) points in the thickness direction of the terminal device; The first mirror group (2) is located on the light-incident side of the object side surface (101) and is fixedly connected to the prism (1); The second mirror group (3) and the image sensor (4) are arranged sequentially on the light-emitting side of the image side surface (102); The driving mechanism (5) is connected to the prism (1) for driving the prism (1) to move along a first direction or a second direction. The first direction is the direction in which the image side (102) points to the image sensor (4), and the second direction is the opposite of the first direction.

2. The camera module according to claim 1, characterized in that, The camera module also includes a third lens group (6), which is located between the second lens group (3) and the image sensor (4) and is connected to the drive mechanism (5) in a transmission manner; The driving mechanism (5) is also used to drive the third mirror group (6) to move along the first direction or the second direction, wherein the moving direction of the third mirror group (6) is opposite to the moving direction of the prism (1).

3. The camera module according to claim 2, characterized in that, The first lens group (2) is a positive lens group, the third lens group (6) is a positive lens group, and the second lens group (3) is a negative lens group.

4. The camera module according to claim 2, characterized in that, The first lens group (2) and the second lens group (3) each include at least one lens.

5. The camera module according to claim 2, characterized in that, The optical axis of the second mirror group (3) is arranged coaxially with the optical axis of the third mirror group (6).

6. The camera module according to claim 1, characterized in that, The prism (1) is bonded to the first mirror group (2).

7. The camera module according to any one of claims 1 to 5, characterized in that, The focal length of the camera module is within the range of [68mm, 180mm].

8. A terminal device (02), characterized in that, The terminal device includes a camera module (01) as described in any one of claims 1 to 7.

9. The terminal device (02) according to claim 8, characterized in that, The terminal device (02) has a connected receiving cavity (100) and a strip opening (200). The receiving cavity (100) is used to receive the prism (1), the second lens group (3), the image sensor (4) and the driving mechanism (5). The strip opening (200) is used to receive the first lens group (2) and provides space for the movement of the first lens group (2).

10. The terminal device (02) according to claim 9, characterized in that, The terminal device (02) further includes a partition (300) located within the receiving cavity (100) and connected to the first lens group (2) for covering the gap between the first lens group (2) and the strip opening (200).

Images