A front-end sensing module for a camera

Abstract

This utility model provides a front-end sensing module for a camera, relating to the field of outdoor camera technology. It includes: a faceplate bracket, an infrared-transparent outer shell, an infrared lamp, a circuit board, a lens, and a black sealing ring. The infrared-transparent outer shell covers the front end of the faceplate bracket; the circuit board is located on the side of the faceplate bracket opposite to the infrared-transparent outer shell; the infrared lamp is mounted on the faceplate bracket and electrically connected to the circuit board; the lens is mounted on the circuit board and passes sequentially through the faceplate bracket and the infrared-transparent outer shell; the black sealing ring is fitted around the lens and sandwiched between the lens and the infrared-transparent outer shell, used to seal the lens and isolate infrared light. This provides the advantage of effectively preventing infrared light leakage and possessing good waterproof sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of outdoor camera technology, and in particular to a front-end sensing module for a camera. Background Technology

[0002] With the widespread application of outdoor surveillance equipment, cameras integrating infrared night vision functionality are becoming increasingly common. Among these, the front-end sensing module, as a crucial component for image acquisition and sensing, directly affects the camera's performance.

[0003] In existing technologies, the front-end sensing module of a camera typically uses a shell made of infrared-transparent material as the light-emitting window for the infrared lamp, with the lens passing through the lens hole of this shell to acquire images. As a result, the infrared light emitted by the infrared lamp in night vision mode can easily enter the lens, causing night vision light leakage phenomena such as "red fog" and "glare" in the image, affecting image quality.

[0004] Furthermore, if the lens and the infrared outer shell are not effectively sealed, rainwater, dust, and other impurities can easily seep in, causing lens blurring, corrosion, or even overall malfunction.

[0005] Therefore, a front-end sensing module for a camera that can effectively prevent infrared light leakage and has good waterproof sealing performance needs to be designed. Utility Model Content

[0006] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a front-end sensing module for a camera, which solves at least one of the aforementioned technical problems. It has the advantages of effectively preventing infrared light leakage and having good waterproof sealing performance.

[0007] To achieve the above objectives, this utility model provides a front-end sensing module for a camera, comprising:

[0008] Faceplate support;

[0009] A translucent red outer shell is placed on the front end of the faceplate support;

[0010] The circuit board is disposed on the side of the faceplate support opposite to the infrared-transparent outer shell;

[0011] An infrared lamp is mounted on the faceplate support and is electrically connected to the circuit board.

[0012] The lens is mounted on the circuit board and passes through the faceplate support and the infrared outer shell in sequence;

[0013] A black sealing ring is fitted around the lens and sandwiched between the lens and the infrared-transparent outer shell to seal the lens and isolate infrared light.

[0014] Optionally, the inner ring of the black sealing ring is provided with two annular protrusions spaced apart, which are used to form a pre-compression fit with the lens to improve the waterproof sealing performance.

[0015] Optionally, the annular boss is inclined upward from the inner ring of the black sealing ring toward the lens to provide compression space during lens assembly.

[0016] Optionally, the single-sided interference between the black sealing ring and the lens is 0.2mm to 0.4mm, the thickness of the upper end of the black sealing ring is 0.25mm to 0.30mm, the hardness of the black sealing ring is 33A to 37A, and the angle between the upper end face of the boss and the vertical plane is 75° to 85°.

[0017] Optionally, the infrared-transparent outer shell has a lens hole at the position corresponding to the lens;

[0018] The outer wall of the black sealing ring tapers in a stepped manner from bottom to top;

[0019] The lens hole is a stepped hole, the shape of its lower end diameter matches the shape of the outer ring of the black sealing ring, and its upper end has a stepped surface concentric with the stepped hole;

[0020] Lens decorative ring foam and lens decorative ring are sequentially assembled between the stepped surface, the lens aperture wall and the lens.

[0021] Optionally, the black sealing ring further includes a clamping assembly extending outward from its bottom end, used to clamp between the faceplate support and the translucent outer shell for fixation.

[0022] Optionally, the faceplate support is further provided with a power distribution indicator light and a photosensitive element that are electrically connected to the circuit board;

[0023] The black sealing ring also includes a second light-blocking part connected to the clamping assembly part. The second light-blocking part is arranged around the outer periphery of the power distribution indicator and the photosensitive element, and is used to provide light isolation for the power distribution indicator and the photosensitive element.

[0024] Optionally, the second light-blocking part is provided with a first tube hole, a second tube hole and a light-blocking protrusion, the power distribution indicator is located in the first tube hole and the photosensitive element is located in the second tube hole;

[0025] The light-blocking protrusion is located between the first and second tube holes and is used to block light.

[0026] Optionally, the front-end sensing module of the camera further includes a first light guide and a first light guide foam; the first light guide is sandwiched between the second light blocking part and the infrared transparent outer shell, and the first light guide foam is disposed between the first light guide and the infrared transparent outer shell;

[0027] The first light guide includes:

[0028] The first light guide column has one end inserted into the first tube hole and the other end passing through the infrared outer shell;

[0029] The second light guide post has one end inserted into the second tube hole and the other end passing through the infrared outer shell.

[0030] Optionally, the circuit board includes an infrared lamp board and a main board;

[0031] The infrared lamp board is mounted on the side of the faceplate support opposite to the infrared-transparent outer shell, and is provided with the infrared lamp, the power distribution indicator and the photosensitive element;

[0032] The infrared lamp, the power distribution indicator light, and the photosensitive element all pass through the faceplate support and are located in the space formed between the faceplate support and the infrared-transparent outer shell.

[0033] The motherboard is located on the side of the infrared lamp board away from the faceplate bracket and is electrically connected to the infrared lamp board, and the lens is mounted on it;

[0034] It also includes: PIR components and fill light components;

[0035] The PIR assembly includes: a PIR sensor mounted on the motherboard with its receiving end passing through the faceplate bracket, and a PIR lens covering the receiving end of the PIR sensor and protruding from the infrared outer shell.

[0036] The supplementary lighting assembly includes: a supplementary lighting lamp disposed on the infrared lamp panel, a second light guide located on the supplementary lighting lamp and passing through the faceplate support and the infrared-transparent outer shell in sequence, and a second light guide foam sandwiched between the side edge of the second light guide and the infrared-transparent outer shell.

[0037] Compared with the prior art, the advantages of this application are:

[0038] Because a black sealing ring is fitted around the lens and sandwiched between the lens and the infrared-transmitting outer shell, it can effectively block the infrared light emitted by the infrared lamp from entering the lens, avoiding red light interference in night vision and improving image clarity. On the other hand, the black sealing ring seals the gap between the lens and the infrared-transmitting outer shell, preventing rainwater and dust from seeping into the camera, thereby significantly improving the overall waterproof and dustproof performance of the camera. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0041] Figure 2 This is a top view of an embodiment of the present utility model;

[0042] Figure 3 for Figure 2 Sectional view along line AA;

[0043] Figure 4 for Figure 3 A magnified view of a section at point E in the middle;

[0044] Figure 5 for Figure 2 A cross-sectional view along line BB, rotated 90 degrees;

[0045] Figure 6 This is an exploded structural diagram of an embodiment of the present utility model;

[0046] Figure 7 This is a top view of an embodiment of the present invention with the infrared-transparent outer shell hidden.

[0047] Figure 8 This is a schematic diagram of the structure of the black sealing ring, the first light guide, and the foam of the first light guide of this utility model.

[0048] Figure 9 This is a top view of the black sealing ring according to an embodiment of the present invention;

[0049] Figure 10 for Figure 9 A cross-sectional view along the CC line;

[0050] Figure 11 This is a top view of the infrared-transparent outer shell of an embodiment of this utility model;

[0051] Figure 12 for Figure 11 A sectional view along the DD line;

[0052] Figure 13 This is a bottom view of the infrared-transparent outer shell of an embodiment of this utility model.

[0053] Explanation of reference numerals in the attached figures

[0054] 100 - Front-end sensing module of the camera;

[0055] 1-Radiant outer shell; o1-Lens aperture; a-Stepped surface; 11-Crimping protrusion;

[0056] 2-Faceplate support; o2-Lens aperture;

[0057] 3-Circuit board; 31-Infrared lamp board; 311-Infrared lamp; 312-Power distribution indicator light; 313-Photosensitive element; 32-Main board; 321-Lens;

[0058] 4-Black sealing ring; 41-Inner ring; 42-Annular boss; α-Included angle; e-Upper end; 43-Outer ring; 44-Clamping assembly part; 45-Second light-blocking part; o3-First pipe hole; o4-Second pipe hole; o5-Positioning assembly hole; 46-Light-blocking ridge;

[0059] 51 - Lens decorative ring foam; 52 - Lens decorative ring;

[0060] 61-First light guide element; 611-First light guide post; 612-Second light guide post; 62-First light guide element foam;

[0061] 7-PIR assembly; 71-PIR sensor; 72-PIR lens;

[0062] 8-Supplemental lighting assembly; 81-Supplemental lighting; 82-Secondary light guide; 83-Secondary light guide foam. Detailed Implementation

[0063] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0064] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "back," "side," and "circumferential" used in this utility model to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model. In addition, the terms "first" and "second" are only used to distinguish multiple parts or structures with the same or similar structures, and do not indicate any special limitation on the arrangement order or connection relationship.

[0065] Please refer to Figures 1 to 13 This utility model embodiment provides a front-end sensing module 100 for a camera, which together with a back-end module (not shown in the figure) constitutes the camera (not shown in the figure). The front-end sensing module 100 of the camera includes: a front shell bracket 2, an infrared outer shell 1, an infrared lamp 311, a lens 321, and a black sealing ring 4.

[0066] The faceplate bracket 2 is a structural support component of the front-end sensing module, used to support and fix various key components. The faceplate bracket 2 is provided with a lens through-hole o2 for mounting the lens 321.

[0067] The infrared-transmitting outer shell 1 is installed on the front end of the faceplate support 2. It is made of infrared-transmitting material, which can transmit infrared light to achieve night vision function, and at the same time protect the internal components from the influence of the external environment (such as dust and moisture). The infrared-transmitting outer shell 1 has a lens hole o1 at the position corresponding to the lens through hole o2, through which the lens 321 passes.

[0068] The circuit board 3 is located on the side of the faceplate bracket 2 opposite to the infrared outer shell 1, and is used to install and connect the electronic components at the front end of the camera.

[0069] Infrared lamps 311 are mounted on the faceplate support 2 and electrically connected to the circuit board 3. Specifically, in this embodiment, six infrared lamps 311 are arranged in a ring around the lens aperture o2 to form a uniform infrared illumination area. Of course, in other embodiments, the number and arrangement of infrared lamps 311 can be flexibly adjusted according to specific needs and are not limited to a ring arrangement.

[0070] Lens 321 is mounted on circuit board 3, with its receiving end facing the infrared outer shell 1, and passes through the lens through hole o2 on the shell bracket 2 and the lens hole o1 on the infrared outer shell 1 in sequence, for acquiring external image signals.

[0071] The black sealing ring 4 is fitted around the lens 321 and sandwiched between the lens 321 and the infrared outer shell 1. It is used to seal the lens 321 to prevent moisture and dust from entering, and at the same time, it can also isolate the infrared light interference of the infrared lamp 311.

[0072] Because a black sealing ring 4 is fitted around the lens 321 and sandwiched between the lens 321 and the infrared outer shell 1, it can effectively block the infrared light emitted by the infrared lamp 311 from entering the lens 321, avoiding red light interference in night vision and improving image clarity. On the other hand, the black sealing ring 4 seals the gap between the lens 321 and the infrared outer shell 1, preventing rainwater and dust from seeping into the camera, thereby significantly improving the overall waterproof and dustproof performance of the camera.

[0073] To improve the waterproof seal between lens 321 and infrared outer shell 1, optionally, please refer to... Figure 4 , Figure 8 and Figure 10 In this embodiment, the inner ring 41 of the black sealing ring 4 is provided with two annular protrusions 42 at intervals, which are used to form a pre-compression fit with the lens 321 to improve the waterproof sealing performance. Specifically, the two annular protrusions 42 respectively form a pre-compression fit with the outer surface of the lens 321, thereby forming a double sealing contact in the circumference of the lens 321, improving the fit stability and waterproof capability of the sealing ring. Of course, in other embodiments, the number of annular protrusions 42 is not limited to two, but can also be one, three, or more, which can be flexibly adjusted according to specific needs, and no specific limitation is made here.

[0074] Traditional vertical bosses, because they cannot actively create an elastic buffer space, are prone to being assembled too tightly or too loosely, leading to poor sealing. Optionally, please refer to... Figure 8 and Figure 10 In this embodiment, the annular boss 42 is inclined upward from the inner ring 41 of the black sealing ring 4 toward the lens 321. This inclined structure provides effective compression space during the insertion of the lens 321, allowing the sealing ring to undergo gradual deformation during assembly, thereby achieving a flexible pre-compression fit. Preferably, the angle α between the upper end face of the boss and the vertical plane is 80°; however, in other embodiments, the angle α between the upper end face of the boss and the vertical plane can also be 75°, 78°, 83°, and 85°; as long as it is within the range of 75° to 85°, no specific limitation is made here.

[0075] To further optimize the performance of the black sealing ring 4, optionally, please refer to Figure 4 In this embodiment, the one-sided interference between the black sealing ring 4 and the lens 321 is 0.3 mm. Of course, in other embodiments, the one-sided interference between the black sealing ring 4 and the lens 321 can also be 0.2 mm, 0.25 mm, 0.35 mm, or 0.4 mm; as long as it is within the range of 0.2 mm to 0.4 mm. The thickness of the upper end e of the black sealing ring 4 is 0.28 mm. Of course, in other embodiments, the thickness of the upper end e of the black sealing ring 4 can also be 0.25 mm, 0.27 mm, 0.29 mm, or 0.30 mm; as long as it is within the range of 0.25 mm to 0.30 mm. The hardness of the black sealing ring 4 is 35 A. Of course, in other embodiments, the hardness of the black sealing ring 4 can also be 33 A, 34 A, 36 A, or 37 A; as long as it is within the range of 33 A to 37 A. This allows the black sealing ring 4 to have good compression and rebound properties, and to form a stable compression contact after assembly, thereby improving the waterproof sealing effect.

[0076] To further improve the sealing performance of lens 321, optionally, please refer to... Figure 4 , Figure 10 and Figure 12 In this embodiment, the infrared-transparent outer shell 1 has a lens hole o1 at the position corresponding to the lens 321. The outer ring 43 of the black sealing ring 4 tapers in a stepped manner from bottom to top. That is, the outer diameter of the black sealing ring 4 gradually decreases from bottom to top along the height direction to ensure a tight fit with the stepped structure of the lens hole o1. Specifically, in this embodiment, there are two stages of change.

[0077] The lens hole o1 is a stepped hole, with the shape of its lower end matching the shape of the outer ring 43 of the black sealing ring 4. Its upper end has a stepped surface a concentric with the stepped hole. That is, the lower part of the lens hole o1 has a multi-segment stepped hole structure, with the hole diameter gradually decreasing from bottom to top, matching the stepped outer ring 43 wall of the black sealing ring 4. The upper end of the lens hole o1 has a stepped surface a concentric with this stepped hole, and this stepped surface a has a corresponding enlarged hole section with a diameter larger than the diameter of the stepped hole below it. Lens decorative ring foam 51 and lens decorative ring 52 are sequentially assembled between the stepped surface a, the wall of the lens hole o1, and the lens 321.

[0078] Thus, by tightly fitting the stepped outer wall of the black sealing ring 4 with the stepped hole of the lens hole o1, multi-level positioning and circumferential sealing can be achieved. In addition, the lens decorative ring foam 51 and lens decorative ring 52 further prevent the entry of dust, moisture and other impurities, effectively improving the sealing reliability and environmental adaptability of the camera lens 321 assembly.

[0079] To improve the installation stability of the black sealing ring 4, optionally, please refer to... Figure 8 In this embodiment, the black sealing ring 4 also includes a clamping assembly part 44. The clamping assembly part 44 extends outward from the bottom end of the black sealing ring 4; it is used to clamp between the faceplate support 2 and the infrared outer faceplate 1 to prevent displacement or loosening during assembly or use, thereby achieving a stable fixing effect.

[0080] Alternatively, please refer to Figures 6 to 8 In this embodiment, the faceplate bracket 2 is also equipped with a network indicator light 312 and a photosensitive element 313, which are electrically connected to the circuit board 3. The network indicator light 312 is mainly used to indicate the network connection status of the camera. The photosensitive element 313 is used to sense the ambient light intensity and automatically control the infrared light 311 to switch between day and night modes.

[0081] To avoid light leakage between the power distribution indicator 312 and the photosensitive element 313, in this embodiment, the black sealing ring 4 further includes a second light-blocking part 45 connected to the clamping assembly part 44. The second light-blocking part 45 is arranged around the outer periphery of the power distribution indicator 312 and the photosensitive element 313 to provide light isolation between them. Specifically, the second light-blocking part 45 has at least a first tube hole o3 formed around the power distribution indicator 312 and a second tube hole o4 formed around the photosensitive element 313. The power distribution indicator 312 is located within the first tube hole o3, and the photosensitive element 313 is located within the second tube hole o4. Thus, the light emitted by the power distribution indicator 312 is blocked by the tube wall and will not leak into the area of ​​the photosensitive element 313, thereby improving the sensing accuracy of the photosensitive element 313.

[0082] Further, please refer to Figure 8 In this embodiment, the second light-blocking part 45 is also provided with a light-blocking protrusion 46. The light-blocking protrusion 46 is provided between the first tube hole o3 and the second tube hole o4 and is used to block light.

[0083] To improve the light guiding effect and waterproof performance of the power distribution indicator 312 and the photosensitive element 313, optionally, please refer to... Figure 5 and Figure 8 In this embodiment, the front-end sensing module 100 of the camera further includes a first light guide 61 and a first light guide foam 62. The first light guide 61 is sandwiched between the second light blocking part 45 and the infrared transparent outer shell 1, and the first light guide foam 62 is disposed between the first light guide 61 and the infrared transparent outer shell 1.

[0084] The first light guide 61 includes a first light guide post 611 and a second light guide post 612. One end of the first light guide post 611 is inserted into the first aperture o3, and the other end passes through the infrared-transparent outer shell 1, for guiding light to the indicator light. One end of the second light guide post 612 is inserted into the second aperture o4, and the other end passes through the infrared-transparent outer shell 1, for guiding light to the photosensitive element 313.

[0085] To increase the assembly stability of the black sealing ring 4 and prevent it from shifting or loosening during assembly or use, optionally, please refer to... Figure 9 and Figure 13 In this embodiment, a plurality of positioning mounting holes o5 are provided near the edge of the clamping assembly portion 44 of the black sealing ring 4 and the second light-blocking portion 45. A pressing protrusion 11 corresponding to the positioning mounting holes o5 is provided on the lower end face of the infrared-transparent outer shell 1. Thus, when the infrared-transparent outer shell 1 presses against the black sealing ring 4, the positioning and pressing effect is achieved through the cooperation of the pressing protrusion 11 and the positioning mounting holes o5.

[0086] Alternatively, please refer to Figure 6 In this embodiment, the circuit board 3 includes an infrared lamp board 31 and a main board 32.

[0087] An infrared lamp board 31 is mounted on the side of the front cover support 2 away from the infrared-transparent outer shell 1. An infrared lamp 311, a power distribution indicator 312, and a photosensitive element 313 are mounted on it. The infrared lamp 311, the power distribution indicator 312, and the photosensitive element 313 all pass through the front cover support 2 and are located in the space formed between the front cover support 2 and the infrared-transparent outer shell 1.

[0088] The motherboard 32 is located on the side of the infrared lamp board 31 away from the front cover bracket 2 and is electrically connected to the infrared lamp board 31. A lens 321 is mounted on it.

[0089] Thus, through the dual-circuit board 3 structure and functional partition design, the front-end sensing module of the camera has the advantages of high integration and low interference.

[0090] Alternatively, please refer to Figure 1 and Figure 6 In this embodiment, the front-end sensing module 100 of the camera also includes a PIR component 7 and a fill light component 8.

[0091] PIR assembly 7 includes a PIR sensor 71 and a PIR lens 72. The PIR sensor 71 is mounted on the main board 32, and its receiving end passes through the housing support 2. The PIR lens 72 covers the receiving end of the PIR sensor 71 and protrudes from the infrared-transmitting outer housing 1.

[0092] The supplementary lighting assembly 8 includes a supplementary light, a second light guide 82, and a second light guide foam 83. The supplementary light is mounted on the infrared light panel 31. The second light guide 82 is located on the supplementary light and passes sequentially through the front housing support 2 and the infrared-transparent outer housing 1. The second light guide foam 83 is sandwiched between the side edge of the second light guide 82 and the infrared-transparent outer housing 1. This further improves the sealing and waterproof performance of the front-end sensing module 100 of the camera.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the substance of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A front-end sensing module for a camera, characterized in that, include: Faceplate support; A translucent red outer shell is placed on the front end of the faceplate support; The circuit board is disposed on the side of the faceplate support opposite to the infrared-transparent outer shell; An infrared lamp is mounted on the faceplate support and is electrically connected to the circuit board. The lens is mounted on the circuit board and passes through the faceplate support and the infrared outer shell in sequence; A black sealing ring is fitted around the lens and sandwiched between the lens and the infrared outer shell, for sealing the lens and isolating infrared light; The inner ring of the black sealing ring has two annular protrusions spaced apart, which are used to form a pre-compression fit with the lens to improve the waterproof sealing performance.

2. The front-end sensing module of the camera as described in claim 1, characterized in that, The annular boss is inclined upward from the inner ring of the black sealing ring toward the lens to provide compression space during lens assembly.

3. The front-end sensing module of the camera as described in claim 2, characterized in that, The single-sided interference between the black sealing ring and the lens is 0.2mm to 0.4mm, the thickness of the upper end of the black sealing ring is 0.25mm to 0.30mm, the hardness of the black sealing ring is 33A to 37A, and the angle between the upper end face of the boss and the vertical plane is 75° to 85°.

4. The front-end sensing module of the camera as described in claim 1, characterized in that, The infrared-transparent outer shell has a lens hole at the position corresponding to the lens; The outer wall of the black sealing ring tapers in a stepped manner from bottom to top; The lens hole is a stepped hole, the shape of its lower end diameter matches the shape of the outer ring of the black sealing ring, and its upper end has a stepped surface concentric with the stepped hole; Lens decorative ring foam and lens decorative ring are sequentially assembled between the stepped surface, the lens aperture wall and the lens.

5. The front-end sensing module of the camera as described in claim 1, characterized in that, The black sealing ring also includes a clamping assembly extending outward from its bottom end, used to clamp between the faceplate support and the translucent outer shell for fixation.

6. The front-end sensing module of the camera as described in claim 5, characterized in that, The faceplate support is also provided with a power distribution indicator light and a photosensitive element that are electrically connected to the circuit board; The black sealing ring also includes a second light-blocking part connected to the clamping assembly part. The second light-blocking part is arranged around the outer periphery of the power distribution indicator and the photosensitive element, and is used to provide light isolation for the power distribution indicator and the photosensitive element.

7. The front-end sensing module of the camera as described in claim 6, characterized in that, The second light-blocking part is provided with a first tube hole, a second tube hole and a light-blocking protrusion, the power distribution indicator is located in the first tube hole and the photosensitive element is located in the second tube hole; The light-blocking protrusion is located between the first and second tube holes and is used to block light.

8. The front-end sensing module of the camera as described in claim 7, characterized in that, It also includes a first light guide and a first light guide foam; the first light guide is sandwiched between the second light blocking part and the infrared transparent outer shell, and the first light guide foam is disposed between the first light guide and the infrared transparent outer shell; The first light guide includes: The first light guide column has one end inserted into the first tube hole and the other end passing through the infrared outer shell; The second light guide post has one end inserted into the second tube hole and the other end passing through the infrared outer shell.

9. The front-end sensing module of the camera as described in claim 6, characterized in that, The circuit board includes an infrared lamp board and a main board; The infrared lamp board is mounted on the side of the faceplate support opposite to the infrared-transparent outer shell, and is provided with the infrared lamp, the power distribution indicator and the photosensitive element; The infrared lamp, the power distribution indicator light, and the photosensitive element all pass through the faceplate support and are located in the space formed between the faceplate support and the infrared-transparent outer shell. The motherboard is located on the side of the infrared lamp board away from the faceplate bracket and is electrically connected to the infrared lamp board, and the lens is mounted on it; It also includes: PIR components and fill light components; The PIR assembly includes: a PIR sensor mounted on the motherboard with its receiving end passing through the faceplate bracket, and a PIR lens covering the receiving end of the PIR sensor and protruding from the infrared outer shell. The supplementary lighting assembly includes: a supplementary lighting lamp disposed on the infrared lamp panel, a second light guide located on the supplementary lighting lamp and passing through the faceplate support and the infrared-transparent outer shell in sequence, and a second light guide foam sandwiched between the side edge of the second light guide and the infrared-transparent outer shell.

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