A camera module with adjustable fill light angle

Abstract

This utility model discloses an adjustable fill light angle camera module, including a frame, a fill light, and a lens assembly. The fill light includes an adjustment mechanism, a light plate, and a light bracket. One end of the adjustment mechanism is mounted on the frame, and the other end has a driving gear extending into the frame. The light bracket is rotatably mounted within the frame and has a driven gear meshing with the driving gear. The light plate is mounted on the light bracket. Driven by the adjustment mechanism, the light bracket rotates the fill light within the frame to adjust the illumination angle and range. The lens assembly is located within the frame, and the fill light is arranged around it. When the camera module has a wide field of view, the fill light can be rotated outwards to expand the illumination range and completely cover the camera's captured image. When the camera's field of view is narrow, the fill light can be moved inwards to concentrate the light. This allows a single-specification camera module to be compatible with various camera modules with different field of view.

Description

Technical Field

[0001] This utility model relates to the field of camera equipment technology, and in particular to a camera module with adjustable fill light angle. Background Technology

[0002] With the widespread application of camera modules in automotive (DMS / OMS), drones, robotics, and industrial fields, the technology of capturing and analyzing images using photosensitive elements has become increasingly mature. However, in many applications, such as the dimly lit interior of a car, cameras often fail to capture clear images. To address this issue, the industry commonly employs the technology of integrating supplementary lighting (such as lasers or infrared LEDs) into the camera module area to improve image clarity by illuminating the shooting area.

[0003] In traditional technologies, several optimization schemes have emerged to expand the illumination range. For example, Chinese utility model patent (authorization announcement number CN213461918U) discloses a camera module that employs a connecting plate assembly on which a first supplementary light and a second supplementary light are mounted. Its key feature is that the mounting surfaces of the two supplementary lights are arranged at a fixed angle, aiming to achieve a wider illumination range through different illumination positions. This scheme, by combining circuit boards at different angles, allows one supplementary light to illuminate the closer front seats, while the other illuminates the farther rear seats, thus solving the problem of insufficient coverage from a single light source.

[0004] However, regardless of whether a single fill light is used or a combination of multiple fixed-angle fill lights as described in the aforementioned patent, the fill light angle cannot be changed once it is determined during the design phase. When the camera is replaced with a lens with a different field of view, or when the module is applied to vehicles with different interior spaces, these fixed angles may no longer perfectly match the new shooting requirements, resulting in some areas being too dark or wasting light energy. To adapt to different applications, manufacturers still need to design and produce various fill light structures or connecting plate assemblies with different fixed angles, which still leads to a wide variety of products, increases design and production costs, and reduces product versatility. Utility Model Content

[0005] Therefore, it is necessary to provide a camera module with an adjustable fill light angle to address the above problems.

[0006] This application provides a camera module with an adjustable fill light angle, including:

[0007] Frame;

[0008] A fill light includes an adjustment mechanism, a lamp plate, and a lamp bracket. One end of the adjustment mechanism is mounted on the frame, and the other end is provided with a drive gear that extends into the frame. The lamp bracket is rotatably mounted in the frame and is provided with a driven gear that meshes with the drive gear. The lamp plate is mounted on the lamp bracket. Driven by the adjustment mechanism, the lamp bracket drives the fill light to rotate within the frame to adjust the illumination angle and illumination range of the fill light.

[0009] A lens assembly is disposed within the frame, and a fill light is arranged around the lens assembly.

[0010] Optionally, the lamp bracket has a fixing groove in the middle for mounting the lamp plate, and the lamp bracket has a rotating shaft at both ends for connecting the frame, with the driven gear located at one end of the rotating shaft.

[0011] Optionally, the frame is provided with a mounting base plate, the lamp bracket is disposed on the mounting base plate, and a receiving groove is formed between the mounting base plate and the inner wall of the frame, the receiving groove being used to accommodate the driven gear and the driving gear;

[0012] The mounting base plate is also provided with a rotating groove for accommodating the rotating shaft, and a limiting plate is provided on the rotating groove.

[0013] Optionally, the mounting base plate is provided with a stepped structure, which is staggered in a direction perpendicular to the surface of the base plate to abut against either end face of the lamp bracket adjacent to the rotating shaft, so as to limit the rotation of the lamp bracket in a clockwise or counterclockwise direction along the rotating shaft.

[0014] Optionally, the adjustment mechanism includes a knob and a cover plate. The knob includes a base, and a protruding knob and a gear shaft respectively disposed on both ends of the base. The gear shaft passes through and extends into the frame, and the drive gear is disposed on the end of the gear shaft away from the base.

[0015] The cover plate is disposed on the frame, and the cover plate has a through hole adapted to the protruding button for limiting the knob on the frame.

[0016] Optionally, an adjustment groove is provided on the top end face of the frame, the bottom of the adjustment groove is adapted to the base, the top of the adjustment groove is adapted to the cover plate, and the cover plate is fastened to the adjustment groove.

[0017] Optionally, the adjustment mechanism further includes a set screw that passes through the cover plate and abuts against the base to fix the rotation angle of the knob.

[0018] Optionally, the lamp beads on the lamp board are laser or infrared LEDs, and the number of lamp beads is one or more, arranged in a preset manner.

[0019] Optionally, the adjusting mechanism is a motor, and the driving gear is disposed on the output shaft of the motor.

[0020] Optionally, the gear ratio between the driving gear and the driven gear is less than 1:2.

[0021] Compared with the prior art, the technical solution provided in this application has the following advantages:

[0022] The aforementioned adjustable fill light angle camera module integrates the adjustment mechanism, light panel, and light bracket into a fill light system. The adjustment mechanism uses a drive gear at one end to mesh with a driven gear on the light bracket, forming a gear transmission system. When the adjustment mechanism is externally driven, the drive gear rotates the driven gear, which in turn drives the fixed light bracket and light panel to rotate synchronously. Users or control systems can precisely change the illumination angle and range of the fill light, fundamentally solving the problem in the prior art where a fixed fill light angle could not adapt to different viewing angles (especially wide-angle) cameras. When the camera component has a wide viewing angle, the fill light can be rotated outwards to expand the illumination range and completely cover the camera's captured image; conversely, when the camera has a narrow viewing angle, the fill light can be moved inwards to concentrate the light. This flexibility allows a single-specification camera module to match various camera components with different viewing angles, eliminating the need to design and manufacture different angle frame structures for each lens. This greatly enhances the product's versatility and applicability, and effectively reduces the R&D and production costs caused by the large variety of mold types. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a camera module provided in one embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the gear meshing structure of a camera module provided in one embodiment of this application;

[0025] Figure 3 Another perspective of the overall structural schematic diagram of a camera module provided in an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of the frame structure of a camera module provided in one embodiment of this application;

[0027] Figure 5 Another perspective of the schematic diagram of the frame structure of a camera module provided in an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Frame; 110. Mounting base plate; 111. Rotating groove; 112. Stepped structure; 120. Receiving groove; 130. Limiting plate; 140. Adjustment groove; 200. Fill light; 210. Adjustment mechanism; 211. Drive gear; 212. Knob; 2121. Base; 2122. Protruding button; 2123. Gear shaft; 213. Cover plate; 214. Set screw; 220. Lamp board; 221. Lamp bead; 230. Lamp bracket; 231. Driven gear; 232. Rotating shaft; 300. Lens assembly. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0031] See Figure 1 and Figure 2 An embodiment of this utility model provides a camera module with an adjustable fill light angle, comprising:

[0032] Frame size 100;

[0033] The supplementary light 200 includes an adjustment mechanism 210, a lamp plate 220, and a lamp bracket 230. One end of the adjustment mechanism 210 is mounted on the frame 100, and the other end is provided with a drive gear 211 that extends into the frame 100. The lamp bracket 230 is rotatably mounted inside the frame 100. The lamp bracket 230 is provided with a driven gear 231 that meshes with the drive gear 211. The lamp plate 220 is mounted on the lamp bracket 230. Driven by the adjustment mechanism 210, the lamp bracket 230 drives the supplementary light 200 to rotate within the frame 100 to adjust the illumination angle and illumination range of the supplementary light 200.

[0034] Lens assembly 300 is disposed within frame 100, and fill light 200 is arranged around lens assembly 300.

[0035] This embodiment achieves flexible adjustment of the angle of the supplementary light 200 by setting up a sophisticated mechanical adjustment mechanism 210. Specifically, this embodiment integrates the adjustment mechanism 210, the lamp panel 220, and the lamp bracket 230 into a supplementary light 200 system. The adjustment mechanism 210 forms a gear transmission system by meshing its driving gear 211 with the driven gear 231 on the lamp bracket 230. When the adjustment mechanism 210 is externally driven, the driving gear 211 drives the driven gear 231 to rotate, thereby driving the lamp bracket 230 and the lamp panel 220, which are fixed to it, to rotate synchronously.

[0036] In this embodiment, the user or control system can precisely change the illumination angle and range of the fill light 200, fundamentally solving the problem in the prior art where the fixed angle of the fill light 200 cannot adapt to cameras with different viewing angles (especially wide-angle). When the camera assembly has a wide viewing angle, the fill light 200 can be rotated outward to expand the illumination range and completely cover the camera's captured image; conversely, when the camera has a narrow viewing angle, the fill light 200 can be retracted inward to concentrate the light. This flexibility allows a single-specification camera module to match multiple camera assemblies with different viewing angles, eliminating the need to design and manufacture different angle frame structures 100 for each lens, greatly enhancing the product's versatility and applicability, and effectively reducing the research and development and production costs caused by the large variety of molds.

[0037] Furthermore, in this embodiment, the supplementary lights 200 are arranged on both sides or around the lens, and the number can be set according to needs. Symmetrically arranging multiple supplementary lights 200 around the lens provides more uniform and three-dimensional lighting to the area captured by the camera, effectively avoiding localized overexposure or shadows that may occur with a single light source, thus improving overall image quality. More importantly, the flexibility in quantity allows the module to be optimized according to specific application scenarios. For example, for scenarios with short illumination distances and small areas, only two sets of supplementary lights 200 can be installed on both sides to save costs and power consumption; while for scenarios requiring wide coverage or higher brightness requirements (such as in-vehicle OMS passenger monitoring), multiple sets of supplementary lights 200 can be installed around the perimeter to ensure sufficient illumination without blind spots. This feature makes the module design not only flexible but also highly scalable, better balancing performance and cost to meet diverse market demands.

[0038] See Figure 2 In one embodiment, the lamp bracket 230 has a fixing groove in the middle for mounting the lamp plate 220, and the lamp bracket 230 has a rotating shaft 232 for connecting the frame 100 at both ends, and the driven gear 231 is disposed on one end of the rotating shaft 232.

[0039] In this embodiment, the lamp bracket 230 has rotating shafts 232 at both ends for connecting to the frame 100. By rotating at both ends, the lamp bracket 230 forms a stable rotating structure that can effectively resist external vibrations and impacts, ensuring that it will not easily shift or vibrate after the angle is adjusted. This is especially important for applications such as vehicle cameras that need to work stably for a long time in bumpy environments. At the same time, the driven gear 231 is directly set at one end of the rotating shaft 232, realizing the most direct transmission of driving torque to the rotating parts, reducing energy loss and potential structural gaps in the transmission path, making the angle adjustment response more direct and the positioning more accurate.

[0040] Furthermore, a fixing groove for mounting the lamp plate 220 is provided in the middle of the lamp bracket 230, providing a clear mounting reference for the lamp plate 220. This ensures that the relative position of the lamp plate 220 and the lamp bracket 230 is precise and consistent, avoiding deviations that may occur during manual assembly. This design not only simplifies the assembly steps on the production line and improves manufacturing efficiency, but also ensures that the fill light 200 of each product leaving the factory is installed in the preset center position, thereby guaranteeing the accuracy and reliability of the illumination angle adjustment.

[0041] See Figures 3 to 4 In one embodiment, a mounting base plate 110 is provided inside the frame 100, and a lamp bracket 230 is disposed on the mounting base plate 110. A receiving groove 120 is formed between the mounting base plate 110 and the inner wall of the frame 100. The receiving groove 120 is used to receive the driven gear 231 and the driving gear 211. The mounting base plate 110 is also provided with a rotating groove 111, which is used to receive the rotating shaft 232. A limiting plate 130 is provided on the rotating groove 111.

[0042] In this embodiment, a receiving groove 120 is formed between the mounting base 110 and the inner wall of the frame 100 to accommodate the driving gear 211 and the driven gear 231. This design serves a protective function. It encloses the precision gear meshing system, effectively preventing the intrusion of other foreign objects and avoiding the risk of jamming or abnormal wear of the transmission mechanism. This significantly improves the reliability and durability of the entire adjustment function during long-term use.

[0043] In this embodiment, the mounting base plate 110 integrates a rotating groove 111 for accommodating the rotating shaft 232, ensuring the relative positional accuracy between the rotating shaft 232 and the gear, making the entire adjustment module structure more compact and the transmission more stable and reliable. The rotating groove 111 is typically U-shaped or semi-open, facilitating the direct placement of the rotating shaft 232 of the lamp bracket 230 into the groove during assembly. However, without additional fixation, the rotating shaft 232 may detach from the groove when subjected to vibration or impact, causing the entire adjustment mechanism 210 to fail. The limiting plate 130 covers the open side of the rotating groove 111, completely enclosing the rotating shaft 232 within the rotating groove 111, thereby constraining the rotating shaft 232 axially.

[0044] See Figures 4 to 5 In one embodiment, the mounting base plate 110 is provided with a stepped structure 112, which is staggered in a direction perpendicular to the surface of the base plate and is used to abut against either end face of the lamp bracket 230 and the rotating shaft 232 on both sides to limit the rotation of the lamp bracket 230 in the clockwise or counterclockwise direction along the rotating shaft 232.

[0045] In this embodiment, a stepped structure 112 is directly provided on the mounting base plate 110 to act as a rotation limit stop for the lamp holder 230, thus achieving functional integration. By integrating the limiting function with the base plate itself, when the lamp holder 230 rotates clockwise or counterclockwise to a predetermined limit position, its end face will abut against one of the two staggered step surfaces on the stepped structure 112, thereby being physically blocked and unable to continue rotating.

[0046] The limiting structure first improves the reliability and durability of the device. Since the limiting structure is part of the base plate, rather than a separate part added later, it eliminates the risk of loosening or falling off, ensuring the effectiveness of the limiting function. The limiting structure also protects the internal precision gear transmission mechanism, preventing gear damage or misalignment due to excessive rotation, and also avoids damage to the cables connecting the lamp board 220 due to excessive twisting.

[0047] Finally, from a manufacturing perspective, this design simplifies the production process and reduces costs. In injection molding or die casting, creating the stepped shape directly on the mold is generally simpler and less expensive than manufacturing and assembling two separate locating pins or blocks. This reduces the number of parts and assembly steps, further highlighting the economy and efficiency of the overall modular design.

[0048] See Figures 2 to 3In one embodiment, the adjustment mechanism 210 includes a knob 212 and a cover plate 213. The knob 212 includes a base 2121, and a protruding knob 2122 and a gear shaft 2123 respectively disposed on the two end faces of the base 2121. The gear shaft 2123 passes through and extends into the frame 100, and the driving gear 211 is disposed on the end of the gear shaft 2123 away from the base 2121. The cover plate 213 is disposed on the frame 100, and the cover plate 213 is provided with a through hole adapted to the protruding knob 2122 for limiting the knob 212 on the frame 100.

[0049] In this embodiment, the adjustment mechanism 210 consists of a knob 212 and a cover plate 213. The knob 212 itself is designed as an integrated component including a base 2121, a protruding knob 2122, and a gear shaft 2123, with a clear structure and well-defined function. The gear shaft 2123 passes through the frame 100, and its end drive gear 211 meshes with the internal driven gear 231, realizing the purpose of accurately transmitting external manual rotation to the internal adjustment system.

[0050] The cover plate 213, through its through-hole, is fitted to the protruding knob 2122 of the knob 212 and fixed to the frame 100, playing a crucial dual role of axial limiting and radial support. On the one hand, it effectively prevents the knob 212 from shifting or disengaging axially (i.e., inward and outward directions), ensuring that the driving gear 211 and the driven gear 231 always maintain the correct meshing distance, avoiding transmission failure or abnormal noise caused by positional misalignment. On the other hand, it provides a stable rotational support surface for the base 2121 of the knob 212, ensuring smooth and stable rotational operation and preventing wobbling.

[0051] See Figure 5 In one embodiment, an adjustment groove 140 is provided on the top end face of the frame 100. The bottom of the adjustment groove 140 is adapted to the base 2121, and the top of the adjustment groove 140 is adapted to the cover plate 213. The cover plate 213 is fastened to the adjustment groove 140.

[0052] In this embodiment, an adjustment groove 140 is provided on the top end face of the frame 100, providing a dedicated installation space for the adjustment knob 212 and the cover plate 213. The interior of the adjustment groove 140 is adapted to the base 2121 of the knob 212 and the cover plate 213 respectively, which is equivalent to a high-precision positioning reference. It ensures that the entire adjustment mechanism 210 can be accurately placed in the preset position during assembly, thereby ensuring that the gear shaft 2123 of the knob 212 can be accurately aligned with the internal transmission mechanism, avoiding installation errors.

[0053] The design of the cover plate 213 fastening onto the adjustment groove 140 embeds the adjustment mechanism 210 into the groove and also provides a certain physical protection for the transmission part of the knob 212, reducing the risk of damage to the adjustment knob 212 due to accidental collision during product transportation or use.

[0054] See Figure 3 In one embodiment, the adjustment mechanism 210 further includes a set screw 214, which passes through the cover plate 213 and abuts against the base 2121 to fix the rotation angle of the knob 212.

[0055] In this embodiment, the adjustment mechanism 210 includes a set screw 214 that passes through the cover plate 213 and directly abuts against the base 2121 of the knob 212, achieving reliable locking of the adjustment angle. When the fill light 200 is adjusted to the ideal angle matching a specific camera's viewing angle, tightening the set screw 214 secures the knob 212 with the pressure applied at its end, preventing any accidental rotation. This function is crucial for applications such as automotive cameras that require long-term operation in high-vibration environments. Without this locking function, continuous bumps during vehicle movement could cause the gear mechanism to gradually shift, rendering the adjusted fill light angle ineffective. Therefore, the presence of the set screw 214 ensures that the product maintains its initial optimal fill light effect, greatly enhancing the product's long-term reliability. This simple yet effective design enables the module to achieve a one-time setting and long-term stability, which is key to transforming this technical solution from an adjustable design into a robust and durable industrial product.

[0056] See Figure 2 In one embodiment, the LED beads 221 on the light board 220 are laser or infrared LEDs, and the number of LED beads 221 is one or more, arranged in a preset manner.

[0057] This embodiment specifies that the LEDs 221 on the light panel 220 are laser or infrared LEDs. Infrared light or laser light is in a spectral range invisible to the human eye, therefore, when supplemental lighting is needed (e.g., in a dimly lit vehicle interior), the shooting area can be illuminated without interfering with the driver or passengers. This is essential for applications such as Driver Monitoring Systems (DMS) or Occupant Monitoring Systems (OMS) in vehicle cameras, as it ensures that the camera captures images clearly without causing visual interference to occupants, thus ensuring driving safety and passenger comfort.

[0058] Secondly, this embodiment enhances the customizability of light intensity and range. Manufacturers can choose different numbers and arrangements of LEDs 221 based on varying application requirements. For example, a narrow-angle industrial camera might only require a single high-power LED 221; while a wide-angle OMS camera needing to cover the entire vehicle interior might require multiple LEDs 221 arranged linearly to form a uniform strip light field matching the camera's wide field of view. This flexibility allows the same module structure to adapt to varying light intensity requirements, from low to high, by adjusting the configuration of the LED board 220, thereby optimizing both performance and cost / power consumption.

[0059] In one embodiment, the adjustment mechanism 210 is a motor, and the drive gear 211 is mounted on the motor's output shaft. This embodiment achieves dynamic and automatic adjustment of the fill light 200's angle by using a motor as the adjustment mechanism 210. This module no longer requires manual on-site physical adjustment and locking; instead, the system can automatically complete this based on preset logic or real-time requirements. For example, the system can adjust the fill light 200's angle in real-time by controlling the motor, based on the camera's different operating modes (such as wide-angle monitoring mode or key area monitoring mode) or the identified scene content, ensuring its illumination range perfectly matches the camera's current shooting task.

[0060] Furthermore, motor-driven operation offers higher adjustment precision and consistency. Compared to manual rotation, stepper motors or servo motors can execute rotation commands accurate to a fraction of a degree, with high repeatability, ensuring consistent performance across batches of products. This automation and intelligence capability significantly expands the application scenarios of the camera module, enabling its integration into more complex intelligent vision systems. This allows for advanced functions such as human-computer interaction and automatic focus linkage, significantly enhancing the product's technological content and market competitiveness.

[0061] In one embodiment, the gear ratio of the driving gear 211 to the driven gear 231 is less than 1:2. This embodiment further limits the gear ratio of the driving gear 211 to the driven gear 231, so that when the driving gear 211 rotates one revolution, the driven gear 231 rotates less than half a revolution. This gear ratio enables more precise angle adjustment, so that when the operator turns the knob 212, a large movement corresponds to only a small angle change in the supplementary light 200, thus allowing for very easy fine-tuning and avoiding accidental over-adjustment, making the adjustment process more controllable.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A camera module with adjustable fill light angle, characterized in that, include: Frame (100); The supplementary light (200) includes an adjustment mechanism (210), a lamp plate (220), and a lamp bracket (230). One end of the adjustment mechanism (210) is disposed on the frame (100), and the other end is provided with a drive gear (211) that extends into the frame (100). The lamp bracket (230) is rotatably disposed within the frame (100). The lamp bracket (230) is provided with a driven gear (231) that meshes with the drive gear (211). The lamp plate (220) is disposed on the lamp bracket (230). Driven by the adjustment mechanism (210), the lamp bracket (230) drives the supplementary light (200) to rotate within the frame (100) to adjust the illumination angle and illumination range of the supplementary light (200). A lens assembly (300) is disposed within the frame (100), and a fill light (200) is disposed around the lens assembly (300).

2. The camera module with adjustable fill light angle according to claim 1, characterized in that, The lamp bracket (230) has a fixing groove in the middle for mounting the lamp plate (220), and the lamp bracket (230) has a rotating shaft (232) at both ends for connecting the frame (100). The driven gear (231) is located on one end of the rotating shaft (232).

3. The camera module with adjustable fill light angle according to claim 2, characterized in that, The frame (100) is provided with a mounting base plate (110), and the lamp bracket (230) is disposed on the mounting base plate (110). A receiving groove (120) is formed between the mounting base plate (110) and the inner wall of the frame (100). The receiving groove (120) is used to accommodate the driven gear (231) and the driving gear (211). The mounting base plate (110) is also provided with a rotating groove (111), which is used to accommodate the rotating shaft (232), and a limiting plate (130) is provided on the rotating groove (111).

4. The camera module with adjustable fill light angle according to claim 3, characterized in that, The mounting base plate (110) is provided with a stepped structure (112), which is staggered in a direction perpendicular to the surface of the base plate and is used to abut against either end face of the lamp bracket (230) and the rotating shaft (232) on both sides to limit the rotation of the lamp bracket (230) in the clockwise or counterclockwise direction along the rotating shaft (232).

5. The camera module with adjustable fill light angle according to claim 1, characterized in that, The adjustment mechanism (210) includes a knob (212) and a cover plate (213). The knob (212) includes a base (2121), and protrusions (2122) and gear shafts (2123) respectively disposed on the two end faces of the base (2121). The gear shaft (2123) passes through and extends into the frame (100). The drive gear (211) is disposed on the end of the gear shaft (2123) away from the base (2121). The cover plate (213) is disposed on the frame (100), and the cover plate (213) is provided with a through hole adapted to the protruding button (2122) for limiting the knob (212) on the frame (100).

6. The camera module with adjustable fill light angle according to claim 5, characterized in that, An adjustment groove (140) is provided on the top end face of the frame (100). The bottom of the adjustment groove (140) is adapted to the base (2121), and the top of the adjustment groove (140) is adapted to the cover plate (213). The cover plate (213) is fastened to the adjustment groove (140).

7. The camera module with adjustable fill light angle according to claim 5, characterized in that, The adjustment mechanism (210) also includes a set screw (214), which passes through the cover plate (213) and abuts against the base (2121) to fix the rotation angle of the knob (212).

8. The camera module with adjustable fill light angle according to claim 1, characterized in that, The lamp beads (221) on the lamp board (220) are laser or infrared LEDs, and the number of lamp beads (221) is one or more, arranged in a preset manner.

9. The camera module with adjustable fill light angle according to claim 1, characterized in that, The adjustment mechanism (210) is a motor, and the drive gear (211) is mounted on the output shaft of the motor.

10. The camera module with adjustable fill light angle according to claim 1, characterized in that, The gear ratio between the driving gear (211) and the driven gear (231) is less than 1:2.

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