Camera module

Abstract

The utility model discloses a camera module, and belongs to the technical field of camera modules. The camera module comprises a lens support which is provided with an inner cavity, and a sinking table is arranged in the inner cavity; the prism support is provided with an assembling face, a prism limiting groove is formed in the assembling face, and at least part of the assembling face abuts against the sinking table; the lens is arranged in the lens bracket; the prism is arranged in the prism limiting groove, the prism is provided with an incident plane and an emergent plane, the incident plane is located in the lens support, and light emitted from the lens enters the prism from the incident plane; and the image sensing chip is arranged on one side of the prism bracket, and the light rays emitted from the emergent surface are projected to the image sensing chip. The camera module provided by the utility model is small in height and size specification and wide in application range.

Description

Technical Field

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

[0002] Smartphones, tablets, and other smart devices are typically equipped with camera modules to enable shooting functions. Some high-end products require camera modules to have a certain telephoto shooting capability. To achieve this, a prism needs to be configured in the camera module to extend the optical path between the lens and the image sensor chip.

[0003] Typically, lenses and prisms are stacked, which increases the overall height of the module to some extent. This makes it more difficult or even impossible to apply camera modules to certain thin or ultra-thin terminal products, greatly affecting the applicability of camera modules. Summary of the Invention

[0004] This application provides a camera module designed to at least partially address the technical problem of excessively large overall height of the camera module, which hinders its assembly and use. Therefore,

[0005] This application provides a camera module, comprising:

[0006] A prism support has a mounting surface, on which a prism limiting groove is formed;

[0007] A lens bracket is mounted on the prism bracket, and an avoidance notch is provided on the side of the lens bracket closest to the prism bracket;

[0008] The lens is mounted inside the lens holder;

[0009] A prism is disposed within the prism limiting groove. The prism has an incident surface and an exit surface, and the incident surface is located within the lens bracket. Light rays emitted from the lens enter the prism through the incident surface and then exit the prism through the exit surface.

[0010] An image sensing chip is disposed opposite to the emission surface. Light emitted from the emission surface is projected onto the image sensing chip, and at least a portion of the optical path area between the emission surface and the image sensing chip is located within the clearance notch.

[0011] In some embodiments, the lens holder includes:

[0012] A base is disposed on the prism support, and a first notch is provided on the base;

[0013] The first movable seat is movably disposed within the base along the optical axis of the lens, and the first movable seat has a second notch that matches and nests with the first notch;

[0014] The lens is mounted on the first movable base.

[0015] In some embodiments, the lens support further includes a second movable seat, which is movably disposed on the first movable seat in a direction orthogonal to the optical axis of the lens, and the second movable seat is provided with a third notch that matches and nests with the second notch, wherein the lens is disposed on the second movable seat.

[0016] In some embodiments, a recessed platform is provided in the inner cavity of the lens bracket, and at least a portion of the mounting surface abuts against the recessed platform.

[0017] In some embodiments, the incident surface protrudes from the mounting surface and is located within the lens holder.

[0018] In some embodiments, the mounting surface is provided with an adjacent support protrusion and a first clearance recess, the support protrusion abuts against the recessed platform, the end of the lens bracket is located in the first clearance recess, and at least a portion of the prism limiting groove is formed in the support protrusion.

[0019] In some embodiments, the lens bracket and the prism bracket are stacked along the optical axis of the lens, and a portion of the countersunk platform is positioned beside the support protrusion to restrict the lens bracket from translating in the orthogonal direction of the optical axis.

[0020] In some embodiments, the recessed platform includes a stop disposed on the inner side of the end face of the lens bracket, the stop abutting against the support protrusion.

[0021] In some embodiments, the prism bracket includes a light-blocking portion located between the lens bracket and the image sensor chip to close the gap between the light-emitting surface and the image sensor chip, thereby blocking external light from entering the optical path area between the light-emitting surface and the image sensor chip.

[0022] In some embodiments, the camera module further includes a chip holder and a filter, the chip holder being connected to the prism holder, the filter and the image sensing chip being disposed on the chip holder, and the filter being located between the emission surface and the image sensing chip.

[0023] The embodiments of this application have at least the following beneficial effects:

[0024] The camera module provided in this application includes a prism bracket, a prism, an image sensor chip, a lens bracket, and a lens. The lenses are disposed between each other and stacked on the prism bracket where the prisms are located. The image sensor chip is disposed on one side of the prism bracket, so that the imaging light emitted from the lens passes through the prism and is projected onto the image sensor chip, thus achieving imaging. The prism bracket has a prism limiting groove on its mounting surface to accommodate the prism, and the lens bracket has an inner cavity to accommodate the lens, embedding the incident surface of the prism within the lens bracket, thereby reducing... The stacking height of the small lens bracket and prism bracket reduces the overall height of the camera module. On the other hand, avoidance notches can be made on the lens bracket to avoid the optical path area between the emitting surface and the image sensor chip, preventing the lens bracket from blocking the imaging light signal projected onto the image sensor chip. This allows the distance between the lens bracket and the prism bracket to be smaller, eliminating the need to reserve space for anti-obstruction interference. This can reduce the overall height of the periscope structure with stacked lenses and prisms to a certain extent, thereby reducing the difficulty of installing and using the camera module and expanding its application range. Attached Figure Description

[0025] 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.

[0026] Figure 1 An exploded view of the camera module structure in an embodiment of this application is shown;

[0027] Figure 2 It shows Figure 1 A cross-sectional view of the camera module in the middle;

[0028] Figure 3 It shows Figure 1 A 3D schematic diagram of the assembly status of the camera module in the image;

[0029] Figure 4 It shows Figure 3 The main view of the camera module in the image;

[0030] Figure 5 It shows Figure 4 A cross-sectional view of the camera module in the middle;

[0031] Figure 6 It shows Figure 1 A cross-sectional view of the prism bracket of the camera module in the image;

[0032] Figure 7 It shows Figure 1 A 3D schematic diagram of the lens bracket of the camera module in the image;

[0033] Figure 8 It shows Figure 7 A schematic diagram of the first angle structure of the base in the lens bracket;

[0034] Figure 9 It shows Figure 7 A schematic diagram of the second angle structure of the base in the lens bracket;

[0035] Figure 10 It shows Figure 7 A schematic diagram of the structure of the first movable seat in the lens bracket;

[0036] Figure 11 It shows Figure 7 A schematic diagram of the structure of the second movable seat in the lens bracket;

[0037] Figure 12 It shows Figure 1 A schematic diagram of the internal optical path of the camera module.

[0038] in,

[0039] 1-Lens;

[0040] 2-Prism, 21-Incident surface, 22-Exit surface, 23-Reflecting surface, 24-Bottom end;

[0041] 3-Image sensor chip, 31-Between chips, 32-Filter;

[0042] 4-Prism bracket, 41-Prism limiting groove, 41a-Gate opening, 41b-Light emission window, 41c-Positioning window, 41d-Second clearance recess, 42-Assembly surface, 421-Supporting protrusion, 422-First clearance recess, 43-Light blocking part.

[0043] 5-Lens bracket, 5a-Inner cavity, 5b-Avoidance notch, 5b1-First notch, 5b2-Second notch, 5b3-Third notch, 51-Base, 511-Sunk platform, 511a-Stop, 52-First movable seat, 53-Second movable seat. Detailed Implementation

[0044] The technical solutions of the embodiments of this application 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 this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0045] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0046] This application is described below with reference to the accompanying drawings and specific embodiments:

[0047] Some electronic terminal devices are equipped with camera modules featuring periscope telephoto mechanisms. A prism is placed between the lens and the image sensor chip to reflect and fold light signals to achieve telephoto functionality. Typically, the lens and prism need to be stacked, resulting in a relatively high overall size of the camera module. This increases the difficulty of installation and use of the camera module and limits its applicability.

[0048] Therefore, this application provides a camera module that aims to solve, to some extent, the technical problems of camera modules equipped with periscope telephoto mechanisms, such as high overall height, difficult installation and adaptation, and limited applicability, thereby achieving the technical effect of reducing the overall height of the camera module and expanding its applicability.

[0049] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 12 In some embodiments, a camera module is provided that, without changing the stacking and assembly mode of the lens and prism, reduces the overall height of the camera module by designing the support structure of the lens and prism, while ensuring the smoothness of the optical path and reducing the risk of interference and occlusion.

[0050] Specifically, the camera module includes a lens 1, a prism 2, an image sensor chip 3, a prism bracket 4, and a lens bracket 5. The prism 2 has an incident surface 21 and an exit surface 22. The lens 1 is disposed on one side of the incident surface 21, and the image sensor chip 3 is disposed on one side of the exit surface 22. Light emitted from the lens 1 enters the prism 2 through the incident surface 21, is reflected at least once within the prism 2, and then exits through the exit surface 22 before being projected onto the image sensor chip 3. This extends the light path, thereby enabling telephoto shooting.

[0051] The prism bracket 4 serves as the support and fixing structure for the prism 2, and has a prism limiting groove 41 for fitting and fixing the prism 2. To ensure the entry and exit of light, the prism limiting groove 41 should be structurally designed to form a window or other pathway for the imaging light signal to pass through. Specifically, the groove opening 41a of the prism limiting groove 41 is an open structure, serving as a window for light to enter, and the incident surface 21 can be adapted to be located in the area of ​​the groove opening 41a; and an exit window 41b can be formed on one side wall of the prism limiting groove 41, cooperating with the exit surface 22 to allow light emitted from the exit surface 22 to pass through.

[0052] The lens bracket 5 is used to support and fix the lens 1. It has an inner cavity 5a to accommodate the lens 1, and a fixing and supporting structure adapted to the lens 1 can also be provided in the inner cavity 5a. The lens bracket 5 is based on the prism bracket 4 and can be directly or indirectly mounted on the lens bracket 5.

[0053] Considering the stacked use of the lens 1 and the prism 2, the lens bracket 5 is located at the opening of the prism limiting groove 41, and the light-emitting window 41b is located beside the lens bracket 1. Therefore, the bottom or lower part of the lens bracket 5 will be very close to the light-emitting window 41b, which poses a certain risk of blocking the imaging light. For this reason, there is usually a certain gap between the lens bracket 5 and the prism bracket 4 to reduce the risk of obstruction or light interference. This also makes the overall assembly height of the lens bracket 5 and the prism bracket 4 relatively high.

[0054] In order to reduce the overall height of the camera module and avoid the lens bracket 5 from interfering with or blocking the imaging light signal projected onto the image sensor chip 3, the lens bracket 5 is provided with an avoidance notch 5b to avoid the imaging light signal projected onto the image sensor chip 3 from the exit surface 22. This allows the distance between the lens bracket 5 and the prism bracket 4 to be closer, thereby reducing or even eliminating the anti-interference distance between the lens bracket 5 and the prism bracket 4. This, to a certain extent, can reduce the overall height of the stacked assembly between the lens 1 and the prism 2.

[0055] In other words, the clearance 5b is set in the optical path region S of the imaging light signal between the emission surface 22 and the image sensor chip 3, keeping the optical path of the imaging light signal projected from the emission surface 22 to the image sensor chip 3 unobstructed; thereby enabling the distance between the lens bracket 5 and the prism bracket 4 to be reduced or even eliminated, so as to reduce the overall height of the camera module.

[0056] In some embodiments, considering that the avoidance window 41b can reduce the influence of the lens bracket 5 on the emitted light of the prism 2, the incident surface 21 can be disposed within the inner cavity 5a of the lens bracket 5, thereby reducing the distance between the lens 1 and the prism 3 to a certain extent.

[0057] In other words, part of the main body of the prism 2 can be disposed in the inner cavity 5a of the lens bracket 5, thereby further reducing the stacking assembly height of the prism 2 and the lens 1.

[0058] In some embodiments, the lens 1, the prism 2, and the image sensor chip 3 are arranged in a generally L-shape, that is, the lens 1 and the prism 2 are spaced apart along the optical axis direction O of the lens 1, and the line connecting the image sensor chip 3 and the prism 2 is approximately orthogonal to the optical axis direction O of the lens 1.

[0059] Correspondingly, there is a risk that part of the imaging light signal emitted from the emission surface 22 may interfere with the bottom or side of the lens bracket 5. Therefore, the avoidance notch 5b may be provided on the side wall or bottom area of ​​the lens bracket 5 near the image sensor chip 3.

[0060] In some embodiments, considering that the direction of the imaging light signal emitted from the prism 2 is perpendicular to the exit surface 22, and the incident light is along the stacking direction of the lens 1 and the prism 2, i.e. the optical axis direction O of the lens 1, the optical path region S of the imaging light signal between the exit surface 22 and the image sensor chip 3 can be configured by setting the angle between the exit surface 22 and the optical axis direction O of the lens 1.

[0061] Generally, the smaller the angle α between the normal direction of the exit surface 22 and the optical axis direction O of the lens 1, the closer the optical path region S of the imaging light signal between the exit surface 22 and the image sensor chip 3 is to the lens bracket 2, and the greater the risk of interference between the lens bracket 2 and the imaging light signal emitted from the exit surface 22. Therefore, the interference risk can be reduced by increasing the distance between the lens bracket 5 and the prism 2 and the lens bracket 4; alternatively, the avoidance notch 5b can be provided on the sidewall or bottom region of the lens bracket 5 near the image sensor chip 3, and the size of the avoidance notch 5b can be controlled to meet the requirements for avoiding the imaging light signal.

[0062] In other words, by creating a clearance notch 5b of a certain size in the lens bracket 5, the distance between the lens bracket 5 and the prism bracket 4 can be reduced, thereby helping to reduce the overall height of the camera module; however, it also increases the structural density of the local area to a certain extent, making the structural design more difficult, so comprehensive consideration is required.

[0063] It is worth noting that the larger the angle between the normal direction of the exit surface 22 and the optical axis direction O of the lens 1, the farther the optical path region S of the imaging light signal between the exit surface 22 and the image sensor chip 3 is from the lens bracket 2, and the farther the image sensor chip 3 is from the lens 1, resulting in a higher overall camera module, which is not conducive to assembly and use. Therefore, the optical path region S of the imaging light signal between the exit surface 22 and the image sensor chip 3 can be slightly closer to the lens bracket 5, for example, the angle α between the normal direction of the exit surface 22 and the optical axis direction O of the lens 1 can be configured to be slightly less than 90 degrees.

[0064] In some embodiments, the prism 2 is provided with a reflecting surface 23, and the imaging light signal is reflected once in the prism 2 before being emitted. For example, the prism 2 can be configured as a generally triangular prism, with the exit surface 22 adjacent to the incident surface 21 and the reflecting surface 23.

[0065] The light emitted from the lens 1 enters the prism 2 from the incident surface 21, is then reflected by the radiating surface 23 and exits from the exit surface 22, and is projected onto the image sensor chip 3 after passing through the light exit window 41b.

[0066] The angle between the exit surface 22 and the incident surface 21 can be configured to be greater than 90 degrees, thereby reducing the distance between the image sensor chip 3 and the lens 1 in the optical axis direction O of the lens 1, thus reducing the overall height of the camera module.

[0067] In conjunction with this, the clearance notch 5b is opened on the side wall or bottom area of ​​the lens bracket 5 near the image sensor chip 3, which can further reduce the distance between the lens 1 and the prism 2, thereby further reducing the overall height of the camera module.

[0068] It is worth noting that, since the incident surface 21 is located inside the lens bracket 5, and part of the exit surface 22 is also located inside the lens bracket 5, the clearance notch 5b can, to a certain extent, ensure that the outgoing light emitted from the exit surface 22 can pass through the lens bracket 5 without obstruction.

[0069] Accordingly, the size of the avoidance notch 5b can be configured to match the angle between the exit surface 22 and the incident surface 21 to meet the requirements of avoiding the emitted light rays.

[0070] In some embodiments, the prism 2 is configured as a generally triangular prism, the exit surface 22 is adjacent to the incident surface 21 and the included angle is obtuse, and a portion of the optical path region S between the image sensing chip 3 and the exit surface 22 will protrude from the incident surface 21; correspondingly, the area of ​​the slot 41a of the prism limiting groove 41 is larger than the area of ​​the incident surface 21, and part of the emitted light will pass through the slot 41a and the light-emitting window 41b in sequence before being projected onto the image sensing chip 3.

[0071] In other words, a portion of the light-emitting window 41b will be higher than the assembly surface 42 and the incident surface 21; for example, the slot 41a and the light-emitting window 41b can be connected as one unit.

[0072] In some embodiments, considering that the slot 41a and the light-emitting window 41b are connected as one unit, the area exposed by the prism limiting slot 41 is too large, making the optical path area S of the imaging light signal between the emission surface 22 and the image sensing chip 3 susceptible to intrusion by external interference light signals, thus degrading the imaging quality.

[0073] Therefore, a light-blocking part 43 can be provided on the prism bracket 4 to fill and seal the gap between the lens bracket 5 and the image sensor chip 3, forming a closed light-blocking structure. When the lens bracket 5 and the image sensor chip 3 are mounted on the prism bracket 4, the light-blocking part 43 can block external light from entering the optical path region S between the light-emitting surface 22 and the image sensor chip 3.

[0074] In some embodiments, the light-blocking portion 43 may be slightly higher than the mounting surface 42, filling the space between the edges of the lens bracket 4 and the image sensor chip 3, and the light-blocking portion 43 does not intrude into the area between the emitting surface 22 and the photosensitive surface of the image sensor chip 3.

[0075] Generally, light-blocking adhesive can also be applied between the light-blocking part 43 and the edges of the lens bracket 4 and the image sensor chip 3 to further reduce interference from external light.

[0076] Correspondingly, a portion of the light-emitting window 41b and a portion of the image sensor chip 3 also protrude from the mounting surface 42 and the incident surface 21. Since a lens bracket 5 is also provided on one side of the mounting surface 42, it provides a certain height space, which can provide a certain height space for the image sensor chip 3 without increasing the overall height of the camera module.

[0077] It is worth noting that, since the exit surface 22 is adjacent to the incident surface 21 and the included angle is obtuse, in the optical axis direction O of the lens 1, the optical path region S between the image sensor chip 3 and the exit surface 22 is located between the bottom end 24 of the lens 1 and the prism 2. Therefore, the image sensor chip 3 will not protrude from the bottom end 24 of the lens 1 and the prism 2, thus not increasing the overall assembly height.

[0078] In some embodiments, the light-blocking part 43 is part of the prism support 4 and is prepared by cutting or molding processes.

[0079] The assembly surface 42, the prism limiting groove 41, and the light-emitting window 41b can be machined on a single blank, thereby improving the overall strength of the prism support 4.

[0080] It is worth noting that the slot 41a and the light-emitting window 41b are connected as one unit, which will make the overall strength and shape of the prism support 4 unstable. For example, the slot 41a and the light-emitting window 41b will show deformation with a tendency to open or close. The light-blocking part 43 can strengthen the connection between the slot 41a and the light-emitting window 41b, ensuring the shape stability of the prism support 41.

[0081] The light-emitting window 41b can be opened on the side wall of the light-blocking part 43 and the prism limiting groove 41, that is, it is formed by a portion of the side wall of the light-blocking part 43 and the prism limiting groove 41.

[0082] Generally, the area of ​​the light-emitting window 41b is larger than the area of ​​the photosensitive area of ​​the image sensor chip 3.

[0083] In some embodiments, the prism 2 may also be a triangular prism-like structure, with the incident surface 21 and the exit surface 22 orthogonal, thereby...

[0084] In some embodiments, by designing the shape of the prism 2 and the exiting surface 22, and by coordinating the posture of the prism 2 with the prism support 4, the light emitted from the exiting surface 22 can be strictly confined within the prism support 2.

[0085] That is, the prism support 4 has a certain cavity channel inside, and the slot 41a and the light-emitting window 41b are respectively provided at both ends of the cavity channel, which can limit the interference of external interference light to a certain extent.

[0086] In other words, the light-blocking part 43 can be integrated into a part that is approximately at the same height as the mounting surface, which greatly reduces the area of ​​the groove 41a and reduces the risk of stray light interference.

[0087] In some embodiments, the prism 2 may also take the form of a prism in different forms such as a quadrangular prism, and the lens 1, the prism 2 and the image sensing chip 3 may be arranged in an L-shape.

[0088] To mitigate stray light interference, a thin film can be coated on the area of ​​the prism 2 other than the exit surface 22, the incident surface 21, and other functional surfaces to block external stray light from entering the prism 2.

[0089] See Figure 8 , Figure 9 , Figure 10 and Figure 11 In some embodiments, the camera module is equipped with a focusing function structure for driving the lens 1 to move along the optical axis O of the prism 1 in the inner cavity 5a.

[0090] Specifically, the lens support 5 may include a base 51 and a first movable seat 52. The base 51 is disposed on the prism support 4, and the first movable seat 52 is movably disposed within the base 51. The moving direction of the first movable seat 52 may be set to the optical axis direction O of the lens 1. The lens 1 may be directly or indirectly disposed on the first movable seat 52, so that the lens 1 can move closer to or further away from the prism 2 along its optical axis direction O to achieve focusing.

[0091] Generally, a focusing motor can be connected between the first movable seat 52 and the base 51 to drive the first movable seat 52 to reciprocate relative to the base 51. The focusing motor may include a voice coil motor based on coils and magnets; or other forms of motor structure, which will not be described in detail here.

[0092] On the other hand, the clearance notch 5b may include a first notch 5b1 disposed on the base 51 and a second notch 5b2 disposed on the first movable seat 52. The first notch 5b1 and the second notch 5b2 are disposed opposite to each other, and when the first movable seat 52 approaches the base 51, the first notch 5b1 and the second notch 5b2 can be matched and nested, thereby ensuring the clearance function of the clearance notch 5b.

[0093] Considering that the first movable seat 52 is located inside the base 51, the width of the first notch 5b1 can be slightly smaller than the width of the second notch 5b2, so as to avoid the physical structure of the first movable seat 52 from intruding into the range of the first notch 5b1 and blocking the imaging light signal.

[0094] In some embodiments, in order to reduce the risk of interference between the focusing motor and the lens support 5 and the clearance notch 5b, it is necessary to reasonably plan the position of the focusing motor within the lens support 5; for example, the focusing motor can be arranged at a position away from the clearance notch 5b.

[0095] Specifically, for a focusing voice coil motor that uses a coil and a magnet, the coil and the magnet can be respectively placed on the side of the first moving seat 52 and the base 51 away from the clearance notch 5b.

[0096] Alternatively, the coil and magnet can be set as two sets, respectively located on both sides of the clearance notch 5b, to maintain the balance of diagonal drive to a certain extent.

[0097] In some embodiments, the camera module is equipped with a lens stabilization function to drive the lens 1 to translate in the inner cavity 5a in a direction orthogonal to the optical axis direction O of the lens 1, thereby achieving optical image stabilization.

[0098] Therefore, the lens bracket 5 also includes a second movable seat 53, which is movably disposed on the first movable seat 52. The lens 1 can be mounted on the second movable seat 53, and the movement direction of the second movable seat 53 relative to the first movable seat 52 is orthogonal to the optical axis direction O. Thus, the lens 1 can be translated along the orthogonal direction of its optical axis to achieve optical image stabilization compensation.

[0099] Generally, a vibration-damping drive motor can be connected between the second movable seat 53 and the first movable seat 52 or the base 51 to drive the second movable seat 12 to reciprocate relative to the base 51. The vibration-damping drive motor may include a voice coil motor based on coils and magnets; or other forms of motor structure, which will not be described in detail here.

[0100] Considering that the second movable seat 53 follows the first movable seat 52 as it approaches the prism 2, a corresponding notch structure can be provided on the second movable seat 53 to reduce the risk of the second movable seat 53 interfering with and blocking the imaging light signal. That is, the avoidance notch 5b may also include a third notch 5b3, which is disposed opposite to the second notch 5b2. When the third notch 5b3 approaches the second notch 5b2, it can be matched and nested, thereby ensuring the avoidance function of the avoidance notch 5b.

[0101] Considering that the second movable seat 53 is located on the first movable seat 52, the width of the second notch 5b2 can be slightly smaller than the width of the third notch 5b3, so as to avoid the solid structure of the second movable seat 53 from encroaching on the range of the second notch 5b2 and blocking the imaging light signal.

[0102] In some embodiments, in order to reduce the risk of interference between the image stabilization drive motor and the lens bracket 5 and the clearance notch 5b, it is necessary to reasonably plan the position of the focusing motor within the lens bracket 5; for example, the image stabilization drive motor can be arranged at a position away from the clearance notch 5b.

[0103] Specifically, the coil and magnet can be set into two groups, respectively located in the side area and the opposite area of ​​the clearance notch 5b, to achieve diagonal drive and anti-shake drive respectively.

[0104] In some embodiments, a focusing motor and an image stabilization drive motor may be simultaneously configured within the lens holder 5 to simultaneously achieve focusing drive and image stabilization drive.

[0105] Specifically, both the focusing motor and the image stabilization drive motor can be driven by voice coil motors. To this end, the focusing motor and the image stabilization drive motor can be spaced apart on both sides and opposite sides of the clearance notch 5b; that is, the clearance notch 5b, the focusing motor, and the image stabilization drive motor are spaced apart circumferentially along the inner cavity of the lens bracket 5.

[0106] It is worth noting that, considering the balance of forces, a voice coil motor can also be arranged on the side where the clearance notch 5b is located to balance the driving force on the opposite side of the clearance notch 5b and maintain the balance of forces on the lens 1.

[0107] In some embodiments, the image sensor chip 3 can be connected to the prism bracket 4 via the chip holder 31 to ensure the stability of the orientation and position of the image sensor chip 3 and to ensure the presentation quality.

[0108] Generally, the photosensitive plane of the image sensing chip 3 can be arranged parallel to the emission surface 22.

[0109] In some embodiments, a filter 32 may also be disposed on the chip holder 31, and the filter is disposed between the image sensing chip 3 and the emission surface 22 to filter out interfering light signals.

[0110] It is worth noting that, considering that the entire camera module is roughly L-shaped, the prism 2 realizes the turning of the optical path. Therefore, the camera module will implement the AA process in the optical axis direction O and its orthogonal direction respectively. During the assembly process, the accuracy of the optical path offset can be increased through the two AA processes to improve the imaging quality.

[0111] The lens bracket 5 and the chip bracket 31 can be fixed to the prism bracket 4 by means of adhesive material.

[0112] In some embodiments, considering that the exit surface 22 is located within the prism limiting groove 41 and the image sensing chip 3 is a certain distance from the exit surface 22, a certain gap can be left between the exit surface 22 and the side wall of the light-emitting window 41b to form an unobstructed semi-enclosed space. This reduces the risk of obstructing the imaging light signal emitted from the exit surface and also reduces the entry of external interference light into the optical path region S of the imaging light signal between the exit surface 22 and the image sensing chip 3, thereby enhancing anti-interference capability.

[0113] In other words, the prism 2 is positioned close to the side of the prism limiting groove 41 away from the light-emitting window 41b, and the specifications of the groove 41a and the light-emitting window 41b meet the requirement that the imaging light signal emitted from the light-emitting surface 22 can pass through without obstruction.

[0114] In some embodiments, considering that one side of the prism 2 is left empty, there is a risk of insufficient limiting ability. Therefore, a positioning window 41c can be opened at the bottom of the prism limiting groove 41. The bottom end 24 of the prism 2, that is, the end away from the incident surface 21, is embedded in the positioning window 41c to achieve bottom limiting and reduce the risk of displacement and vibration of the prism 2 to a certain extent.

[0115] Furthermore, considering that the bottom end 24 of the prism 2 is adjacent to the exit surface 22 and is embedded in the positioning window 41c, the edge area of ​​the exit surface 22 is lower than the bottom of the prism limiting groove 41. Therefore, the bottom of the groove poses a certain risk of obstructing the imaging light signal emitted from the exit surface 22. To address this, a recessed portion, namely a second clearance recess 41d, can be provided in the bottom area of ​​the prism limiting groove 41. The second clearance recess 41d is adjacent to the exit surface 22, thereby reducing the risk of obstructing the light signal to a certain extent.

[0116] Generally, the size and depth of the second avoidance recess 41d can be adapted to the position of the optical path region S of the imaging light signal between the emitting surface 22 and the image sensing chip 3 to reduce the risk of occlusion.

[0117] In some embodiments, considering that the lens bracket 5 is mounted on the prism bracket 4, and there is a certain gap between the lens 1 and the prism 2, the gap between the lens 1 and the prism 2 can be reduced by the structural design of the lens bracket 5 and the form of their cooperation, thereby further reducing the overall height of the module.

[0118] Specifically, the lens bracket 5 has a recessed platform 511 in its inner cavity 5a, and the prism bracket 4 has a mounting surface 42 that is adapted to the lens bracket 4. At least part of the mounting surface 42 is embedded in the inner cavity 5a and abuts against the recessed platform 511, thereby reducing the overall assembly height of the lens bracket 5 and the prism bracket 4 to a certain extent.

[0119] The prism limiting groove 41 is formed on the assembly surface 42, and the incident surface 21 of the prism 2 is also partially embedded in the inner cavity 5a along with part of the assembly surface 42 and at least part of the groove 41a, thereby reducing the distance between the lens 1 and the prism 2, and also helping to reduce the stacking assembly height of the camera module.

[0120] In some embodiments, the mounting surface 42 may be configured in a small form, so that the mounting surface 42 and the prism limiting groove 41 within its range and a portion of the lens body near the incident surface 21 of the prism 2 can be integrally embedded in the inner cavity 5a, thereby reducing the overall mounting height of the prism 2 and the lens 1.

[0121] Since a portion of the lens body near the incident surface 21 is located within the inner cavity 5a of the lens bracket 5, a portion of the structure of the lens bracket 5 may encroach upon the optical path region S of the imaging light signal between the exit surface 22 and the image sensor chip 3, posing a risk of obstructing the imaging light signal. To address this, by setting the shape and size of the avoidance notch 5b, the risk of obstructing the imaging light signal can be reduced or even eliminated, ensuring shooting reliability. This allows for a balance between the need to reduce the assembly height of the camera module and the need to ensure the reliability of the shooting function.

[0122] In some embodiments, considering that the shape of the prism bracket 4 is related to the shape of the prism 4 and its surrounding mating structure, and has certain specifications, there is a certain degree of compatibility difficulty between the prism bracket 4 and the inner cavity 5a of the lens bracket 5. Therefore, only a portion of the mounting surface 42 and a portion of the slot 41 area can be embedded in the inner cavity 5a, thereby meeting the requirement of reducing the assembly height and also reducing the assembly difficulty of the prism bracket 4 and the lens bracket 5, thus reducing the volume specifications of the lens bracket 5 to some extent.

[0123] In other words, a portion of the mounting surface 42 is configured to be embedded in the inner cavity 5a of the lens bracket 5, while the other portion is located outside the lens bracket 5.

[0124] Specifically, the mounting surface 42 is provided with a supporting protrusion 421 and a first clearance recess 422, and there is a height difference between the supporting protrusion 421 and the first clearance recess 422. The supporting protrusion 421 is embedded in the inner cavity 5a of the lens bracket 5 and abuts against the countersunk platform 511. The first clearance recess 422 can provide clearance space for the side of the lens bracket 5 near the mounting surface 422, that is, the end of the lens bracket 5 can be correspondingly set in the area of ​​the first clearance recess 422, so that the first supporting protrusion 421 can be stably embedded in the inner cavity 5a.

[0125] Generally, the first clearance recess 422 can be adapted to surround the support protrusion 421.

[0126] On the other hand, at least a portion of the prism limiting groove 41 can be formed in the area of ​​the support protrusion 421, that is, the area where the incident surface 21 of the prism 2 is located and the area where the groove 41a is located can be located in the area of ​​the support protrusion 421.

[0127] In some embodiments, in the stacking direction of the lens 1 and the prism 2, the supporting protrusion 421 abuts against the platform surface of the countersunk stage 511. However, in the orthogonal direction of the stacking direction of the lens 1 and the prism 2, there is a risk of relative sliding between the lens bracket 5 and the supporting protrusion 421. To address this, the shape of the countersunk stage 511 can be configured such that a portion of the main body of the countersunk stage 511 blocks the side of the supporting protrusion 421, thereby limiting relative sliding between the countersunk stage 511 and the supporting protrusion 421 in the orthogonal direction of the stacking direction of the lens 1 and the prism 2. This ensures the stability of the relative position of the lens bracket 5 and the prism bracket 4, and guarantees the shooting quality.

[0128] In some embodiments, the recess 511 may be configured as a stop 511a formed on the end face of the lens bracket 5, the support protrusion 421 may be adapted to abut against the stop 511a, and the remaining portion of the end of the lens bracket 5 is located in the area of ​​the first clearance recess 422.

[0129] In other words, on the end face of the lens bracket 5 near the prism bracket 4, a recessed groove is provided near the edge of the inner cavity 5a to form the stop 511a, which is used to accommodate the support protrusion 421.

[0130] Generally, the stop 511a can be configured as an annular stop structure arranged circumferentially along the port of the inner cavity 5a, thereby balancing the reliability of fixation and relatively simple processing operation.

[0131] Alternatively, the stop 511a can be configured as multiple discrete stop structures spaced circumferentially along the port of the inner cavity 5a, which can reduce the material usage of the lens bracket 5 to a certain extent while ensuring reliable assembly.

[0132] The embodiments of this application have at least the following beneficial effects:

[0133] The camera module provided in this application includes a prism bracket, a prism, an image sensor chip, a lens bracket, and a lens. The prism bracket has a prism limiting groove for accommodating the prism, and an exit window is formed on the groove sidewall opposite the light-emitting surface of the prism, allowing imaging light emitted from the exit surface to be projected onto the image sensor chip outside the exit window. The lens bracket, containing the lens, is positioned in the prism limiting groove of the prism bracket, with the light-emitting side of the lens facing the incident surface of the prism, thereby transmitting the imaging signal into the prism. The lens bracket has an avoidance notch located within the optical path area between the exit surface and the image sensor chip, preventing the lens bracket from blocking the imaging light signal projected onto the image sensor chip. This allows for a smaller distance between the lens bracket and the prism bracket, eliminating the need for anti-interference space and reducing the overall height of the periscope structure with stacked lenses and prisms. This reduces the difficulty of loading and using the camera module and expands its applicability. The lens bracket has an inner cavity for accommodating the lens, and a recessed platform is provided in the inner cavity. At least part of the mounting surface abuts against the recessed platform, so that at least part of the prism bracket and the incident surface of the prism are embedded in the lens bracket. This reduces the stacking height of the lens bracket and the prism bracket, and correspondingly reduces the overall height of the camera module, thereby reducing the difficulty of loading and using the camera module and expanding its application range.

[0134] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0135] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0136] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0137] In this application, unless otherwise expressly 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0138] Furthermore, the use of terms such as "first" and "second" in this application is 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, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0139] 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 this application. 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.

[0140] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0141] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An image capturing module, comprising: The application relates to a camera module. The prism support has an assembly surface provided with a prism limiting groove. The lens support is arranged on the prism support and is provided with an avoiding gap on one side close to the prism support. The lens is arranged in the lens support. The prism is arranged in the prism limiting groove and has an incident surface and an emitting surface. The image sensing chip is arranged opposite to the emitting surface.

2. The camera module of claim 1, wherein, The lens support comprises a base arranged on the prism support and provided with a first gap. The first moving seat is movably arranged in the base along the optical axis of the lens and is provided with a second gap matched with the first gap. The lens is arranged on the first moving seat. The lens support further comprises a second moving seat movably arranged on the first moving seat along the orthogonal direction of the optical axis of the lens and provided with a third gap matched with the second gap.

3. The camera module of claim 2, wherein, The lens is arranged on the second moving seat.

4. The camera module of any one of claims 1-3, wherein, The inner cavity of the lens support is provided with a sunken platform.

5. The camera module of claim 4, wherein the lens is disposed on the substrate. The incident surface protrudes from the assembly surface and is arranged in the lens support.

6. The camera module of claim 4, wherein the lens barrel is made of a material having a coefficient of thermal expansion of 5 ppm / K or less. The assembly surface is provided with an adjacent supporting convex part and a first avoiding concave part.

7. The camera module of claim 6, wherein the lens is disposed on the substrate. The lens support and the prism support are arranged in a stacking mode along the optical axis of the lens.

8. The camera module of claim 7, wherein, The sunken platform is arranged beside the supporting convex part to limit the translation of the lens support along the orthogonal direction of the optical axis.

9. The camera module of claim 4, wherein, The sunken platform comprises a stopper arranged inside the end surface of the lens support.

10. The camera module of claim 4, wherein, The prism support is provided with a light blocking part arranged between the lens support and the image sensing chip to close the gap between the emitting surface and the image sensing chip and to block the external light from entering the light path region between the emitting surface and the image sensing chip. The camera module further comprises a chip support and a filter. The filter is arranged between the emitting surface and the image sensing chip.

Images