A multi-lens monitoring device

Abstract

The utility model discloses a kind of multi-lens monitoring equipment, including ball cover, base, multiple lens assemblies and multiple light supplementing components, multiple lens assemblies and multiple light supplementing components are in the inner cavity formed by ball cover and base, lens assembly can be circumferentially moved relative to base, and light supplementing component is synchronously circumferentially moved when lens assembly moves, the bottom of ball cover is equipped with bottom mounting, bottom mounting is connected with base, ball cover includes first light-transmitting part, second light-transmitting part and light-blocking part, light-blocking part is located between first light-transmitting part and second light-transmitting part, first light-transmitting part is configured to pass through natural light, second light-transmitting part is configured to pass through infrared light, light-blocking part is configured to block the optical crosstalk of natural light, which is transmitted by first light-transmitting part, and infrared light, which is transmitted by second light-transmitting part, in the interior of ball cover.The utility model can realize that light supplementing component and lens assembly are synchronously circumferentially moved, and can also block natural light and infrared light crosstalk.

Description

Technical Field

[0001] This utility model relates to the field of image acquisition equipment technology, and in particular to a multi-lens monitoring device. Background Technology

[0002] In the field of security monitoring, multi-lens monitoring equipment has gradually replaced traditional single-lens equipment as the mainstream choice to achieve both wide field-of-view coverage and precise monitoring of multiple areas. The core components of such equipment typically include a dome for protection and light transmission, a base for mounting support, multiple lens assemblies responsible for image acquisition, and multiple supplementary lighting components for low-light environment auxiliary imaging. The lens assemblies and supplementary lighting components are all assembled in the cavity formed by the dome and the base to ensure component stability and environmental adaptability.

[0003] Currently, most multi-lens surveillance equipment on the market has a lens assembly that can move circumferentially under the control of the drive system, but the position of the supplementary lighting component is fixed. This means that when the lens assembly moves circumferentially to an area far away from the supplementary lighting component, the supplementary lighting cannot effectively cover the lens's monitoring range, resulting in a situation where the monitored area has no supplementary lighting. Even if the lens assembly moves to the supplementary lighting coverage area, the mismatch between the supplementary lighting angle and the lens's viewing angle can easily lead to uneven image brightness, which seriously affects the quality of the surveillance image in low-light environments.

[0004] Currently, a few systems can achieve synchronized circumferential movement between the supplementary lighting components and the lens components. While this can solve the supplementary lighting coverage problem to some extent, new technical defects have emerged. Specifically, daytime monitoring relies on natural light transmitted through the dome, while nighttime or low-light environments rely on infrared light emitted by the supplementary lighting components. Natural light and infrared light are prone to crosstalk within the dome. During the day, if the supplementary lighting components are accidentally triggered or infrared light is reflected from the environment, the infrared light will interfere with the natural light imaging through the light-transmitting area of ​​the dome, resulting in color distortion and reduced contrast. At night, stray natural light from the environment will pass through the dome and mix into the infrared imaging light path, reducing the signal-to-noise ratio and detail recognition of the infrared image. The crosstalk problem is particularly prominent during the dawn and dusk periods when day and night alternate.

[0005] Therefore, there is an urgent need for a technical solution that can achieve synchronous circumferential movement of the fill light component and the lens component, while also blocking crosstalk between natural light and infrared light. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a multi-lens monitoring device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This utility model provides a multi-lens monitoring device, including a dome, a base, multiple lens assemblies, and multiple supplementary lighting assemblies. The multiple lens assemblies and multiple supplementary lighting assemblies are disposed in the cavity formed by the dome and the base. The lens assemblies are circumferentially movable relative to the base, and the supplementary lighting assemblies move synchronously circumferentially when the lens assemblies move. The bottom of the dome is provided with a bottom mounting member, which is connected to the base. The dome includes a first light-transmitting part, a second light-transmitting part, and a light-blocking part. The light-blocking part is disposed between the first light-transmitting part and the second light-transmitting part. The first light-transmitting part is configured to transmit natural light, the second light-transmitting part is configured to transmit infrared light, and the light-blocking part is configured to block the optical crosstalk between the natural light transmitted by the first light-transmitting part and the infrared light transmitted by the second light-transmitting part inside the dome.

[0009] Furthermore, the light-blocking part has a ring-shaped structure, with the first light-transmitting part located above the light-blocking part and the second light-transmitting part located below the light-blocking part.

[0010] Furthermore, the lens assembly includes a lens body, a lens bracket, and a circumferential rotation drive. The lens body is disposed on the lens bracket, the circumferential rotation drive is mounted on the lens bracket, and a transmission coupling component is provided on the base. The circumferential rotation drive is pulsatorically connected to the transmission coupling component, and the lens body can move along the circumferential direction of the base under the drive of the circumferential rotation drive.

[0011] Furthermore, the transmission mating component is a gear ring, the inner ring of which has a meshing portion, and the power output end of the circumferential rotation drive component is provided with a drive gear, which fits with the meshing portion.

[0012] Furthermore, the base is also provided with an annular guide ring, the lens bracket is movably mounted on the annular guide ring, and the lens bracket can move along the circumferential direction of the annular guide ring.

[0013] Furthermore, the inner ring of the annular guide ring extends towards the center of the annular guide ring and has an inner limiting edge, which forms an inner limiting groove with the inner ring surface of the annular guide ring. The outer ring of the annular guide ring extends away from the center of the annular guide ring and has an outer limiting edge, which forms an outer limiting groove with the outer ring surface of the annular guide ring. The bottom of the lens bracket has an inner locking part and an outer locking part, the inner locking part locking into the inner limiting groove, and the outer locking part locking into the outer limiting groove.

[0014] Furthermore, the fill light assembly includes a fill light body and a fill light bracket, and a fixing plate is provided on the side of the lens bracket away from the center of the base, and the fill light bracket is connected to the fixing plate.

[0015] Furthermore, the lens assembly also includes a pitch drive, the lens body is rotatably mounted on the lens bracket, and the pitch drive is located on one side of the lens bracket and is driveably connected to the lens body.

[0016] Furthermore, the lens body includes a lens housing, a lens body, and a transmission assembly. The inner sidewall of the lens housing is provided with a first gear portion, and the outer sidewall of the lens body is provided with a second gear portion. The transmission assembly includes a transmission power component and a transmission gear. The output end of the transmission power component is connected to the transmission gear. The transmission gear is located between the first gear portion and the second gear portion and meshes with the first gear portion and the second gear portion.

[0017] Furthermore, the lens body also includes a lens mounting bracket, which has a mounting cavity. The lens body is movably disposed within the mounting cavity. The side wall of the mounting cavity is provided with an auxiliary gear, which meshes with the second gear.

[0018] The beneficial effects of this utility model compared with the prior art are as follows: A multi-lens monitoring device includes a dome, a base, multiple lens assemblies and multiple supplementary lighting assemblies. The multiple lens assemblies and multiple supplementary lighting assemblies are disposed in the inner cavity formed by the dome and the base. The lens assemblies can move circumferentially relative to the base, and the supplementary lighting assemblies move circumferentially synchronously when the lens assemblies move. The bottom of the dome is provided with a bottom mounting member, which is connected to the base. The dome includes a first light-transmitting part, a second light-transmitting part and a light-blocking part. The light-blocking part is disposed between the first light-transmitting part and the second light-transmitting part. The first light-transmitting part is configured to transmit natural light, the second light-transmitting part is configured to transmit infrared light, and the light-blocking part is configured to block the optical crosstalk between the natural light transmitted by the first light-transmitting part and the infrared light transmitted by the second light-transmitting part inside the dome. This invention effectively avoids the mismatch problem between the supplementary lighting area and the lens monitoring area caused by the fixed supplementary lighting component in the prior art, by making the supplementary lighting component move synchronously in the circumferential direction when the lens assembly moves relative to the base. This ensures that the lens assembly can obtain accurately matched supplementary lighting support at any circumferential position, improving the brightness uniformity and clarity of the monitoring image in low-light environments. At the same time, the dome covers adapt to the transmission requirements of natural light and infrared light through the first and second light-transmitting parts, respectively, and use the light-blocking part to block the optical crosstalk between the two inside the dome covers, solving the problem of mutual interference between natural light and infrared light that is prone to occur.

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objectives, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 An assembly drawing of a multi-lens monitoring device is provided for a specific embodiment of this utility model;

[0022] Figure 2 An exploded view of a multi-lens monitoring device provided in a specific embodiment of this utility model;

[0023] Figure 3 An exploded view of a dome-shaped cover for a multi-lens monitoring device provided in a specific embodiment of this utility model;

[0024] Figure 4 A schematic diagram illustrating the installation of the lens assembly and supplementary lighting assembly of a multi-lens monitoring device according to a specific embodiment of this utility model;

[0025] Figure 5 This is a schematic diagram of the installation of the lens assembly and the supplementary lighting assembly of a multi-lens monitoring device from another perspective, provided for a specific embodiment of this utility model.

[0026] Figure 6 A schematic diagram of the lens assembly and supplementary lighting assembly of a multi-lens monitoring device provided for a specific embodiment of this utility model;

[0027] Figure 7 An exploded view of the lens assembly and the supplementary lighting assembly of a multi-lens monitoring device provided for a specific embodiment of this utility model;

[0028] Figure 8 This is a schematic diagram of the lens body of a multi-lens monitoring device provided in a specific embodiment of the present utility model.

[0029] Figure Labels

[0030] 1. Dome; 11. First light-transmitting part; 12. Second light-transmitting part; 13. Light-blocking part; 14. Bottom mounting part; 2. Base; 3. Lens assembly; 31. Lens body; 311. Lens housing; 3111. First gear part; 312. Lens body; 3121. Second gear part; 313. Transmission assembly; 3131. Transmission power component; 3132. Transmission gear; 32. Lens bracket; 321. Inner limiting slot; 322. Outer limiting slot; 33. Circumferential rotation drive component; 331. Drive gear; 34. Pitch drive component; 4. Fill light assembly; 41. Fill light body; 42. Fill light bracket; 5. Transmission mating component; 51. Gear meshing part; 6. Annular guide ring; 61. Inner limiting edge; 62. Outer limiting edge. Detailed Implementation

[0031] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] like Figures 1 to 8 As shown, this utility model embodiment provides a multi-lens monitoring device, including a dome 1, a base 2, multiple lens assemblies 3 and multiple supplementary lighting assemblies 4. The multiple lens assemblies 3 and multiple supplementary lighting assemblies 4 are disposed in the cavity formed by the dome 1 and the base 2. The lens assemblies 3 can move circumferentially relative to the base 2, and the supplementary lighting assemblies 4 move circumferentially synchronously when the lens assemblies 3 move. The dome 1 includes a first light-transmitting part 11, a second light-transmitting part 12 and a light-blocking part 13. The light-blocking part 13 is disposed between the first light-transmitting part 11 and the second light-transmitting part 12. The first light-transmitting part 11 is configured to transmit natural light, the second light-transmitting part 12 is configured to transmit infrared light, and the light-blocking part 13 is configured to block the optical crosstalk between the natural light transmitted by the first light-transmitting part 11 and the infrared light transmitted by the second light-transmitting part 12 inside the dome 1.

[0038] The base 2 includes a housing with a top opening and an inner part. The inner part is embedded in the housing and fixed with screws. A cable routing hole can be provided in the central area of ​​the inner part for the power cord and data cable inside the device to pass through.

[0039] The dome 1 has a hemispherical structure, and multiple lens assemblies 3 and multiple lighting assemblies 4 are all housed in the inner cavity, which can isolate external dust, rainwater and other impurities from erosion.

[0040] The spherical cover 1 is divided into a first light-transmitting part 11, a second light-transmitting part 12 and a light-blocking part 13 along its axial direction. The light-blocking part 13 is a ring-shaped structure extending circumferentially along the inner sidewall of the spherical cover 1. The light-blocking part 13 is made of a polymer material, specifically black nylon. After injection molding, it appears black and has a good blocking effect on light. It can effectively prevent natural light from passing through, thereby preventing infrared light from entering the white light area and also preventing white light from entering the infrared light area.

[0041] The first light-transmitting part 11 is disposed above the light-blocking part 13 and is made of a polymer material. This polymer material needs to have a light transmittance of not less than 90% for natural light in the wavelength range of 400-760nm, ensuring that natural light can efficiently penetrate the first light-transmitting part 11 and enter the inner cavity, meeting the imaging requirements of the lens assembly 3 in natural daylight environments. Specifically, the first light-transmitting part 11 can be made of polycarbonate material, which, after injection molding, has high transparency, light transmittance close to that of glass, and good toughness. When subjected to impact, it can withstand greater external force without breaking, meeting the impact test requirement of IK10. At the same time, its white light transmittance can typically reach over 90%.

[0042] The second light-transmitting part 12 is disposed below the light-blocking part 13 and is made of a polymer material. This polymer material needs to meet the requirement that its transmittance of infrared light in the wavelength range of 850-1050nm is not less than 88%. Specifically, the second light-transmitting part 12 can be made of silicone rubber (with the addition of specific infrared transmitting agents). It is itself a polymer material, and after adding the agents, it can allow infrared light to pass through while being injection molded into a black appearance. The infrared light transmittance can reach more than 88%.

[0043] The light-blocking part 13 is integrally formed with the first light-transmitting part 11 and the second light-transmitting part 12 of the spherical cover 1 to ensure the sealing and structural integrity of the connection between the three.

[0044] To facilitate the installation of the ball cover 1, a bottom mounting part 14 is provided at the bottom of the ball cover 1. It has a ring-shaped structure and is connected to the outer shell of the base 2 by screws or snap-fit.

[0045] The number of lens assemblies 3 can be set according to the monitoring range requirements of the monitoring equipment. In this embodiment, it is preferred to have 4 sets. The 4 sets of lens assemblies 3 are evenly distributed along the circumferential direction of the base 2, and the included angle between two adjacent sets of lens assemblies 3 is 90°, which can achieve 360° circumferential monitoring coverage without blind spots. Each set of lens assemblies 3 can move independently along the circumferential direction. Of course, multiple sets of lens assemblies 3 can move in the same direction or in opposite directions.

[0046] By making the supplementary light component 4 move synchronously in the circumferential direction when the lens assembly 3 moves in the circumferential direction relative to the base 2, the mismatch problem between the supplementary light area and the lens monitoring area caused by the fixed supplementary light component 4 in the prior art is effectively avoided. This ensures that the lens assembly 3 can obtain accurately matched supplementary light support at any circumferential position, thereby improving the brightness uniformity and clarity of the monitoring image in low light environment. At the same time, the dome 1 adapts to the transmission requirements of natural light and infrared light through the first light-transmitting part 11 and the second light-transmitting part 12, respectively, and uses the light-blocking part 13 to block the optical crosstalk between the two inside the dome 1, thus solving the problem of mutual interference between natural light and infrared light that is prone to occur.

[0047] In one embodiment, such as Figures 4 to 6 As shown, the lens assembly 3 includes a lens body 31, a lens bracket 32, and a circumferential rotation drive 33. The lens body 31 is mounted on the lens bracket 32, and the circumferential rotation drive 33 is mounted on the lens bracket 32. The base 2 is provided with a transmission coupling component 5, and the circumferential rotation drive 33 is connected to the transmission coupling component 5. The lens body 31 can move along the circumferential direction of the base 2 under the drive of the circumferential rotation drive 33.

[0048] The lens support 32 includes a base plate and multiple side plates erected on the base plate. The side plates and the base plate together form a cavity structure. The circumferential rotation drive 33 uses a DC geared motor, which has the power output capability to adapt to the movement of the lens assembly 3. Through the reduction structure, it can achieve low speed and high torque output to meet the power requirements of the lens assembly 3 moving circumferentially along the base 2. At the same time, the low speed design ensures smooth lens movement and avoids blurring of the image due to excessive movement. The circumferential rotation drive 33 is installed in the cavity structure and fixed with screws. The power output shaft of the circumferential rotation drive 33 extends vertically downward and passes through the base plate. The end of the output shaft of the circumferential rotation drive 33 is provided with a keyway for connecting with the provided drive gear 331.

[0049] The transmission mating component 5 is a gear ring, which is fixed in the positioning groove at the top of the embedded part by screws to achieve circumferential positioning of the gear ring on the base 2 and prevent the gear ring from rotating with the drive gear 331. The inner diameter of the gear ring is designed according to the movement radius of the lens assembly 3 to ensure that the drive gear 331 can always mesh with the gear ring when the lens assembly 3 moves. The inner wall of the gear ring has a continuous meshing part 51 (i.e., internal teeth), and the meshing part 51 is a standard involute tooth shape.

[0050] When the lens assembly 3 needs to move circumferentially along the base 2, the circumferential rotation drive 33 is energized. The power output shaft of the circumferential rotation drive 33 drives the drive gear 331 to rotate around the output shaft axis. Since the drive gear 331 meshes with the gear ring 51 and the gear ring is fixed, according to the principle of reaction force of gear transmission, the drive gear 331 will make circumferential circular motion along the inner ring wall of the gear ring. The circumferential motion of the drive gear 331 drives the circumferential rotation drive 33, which is fixed to it, to move synchronously. This, in turn, drives the lens bracket 32, which is fixed to the circumferential rotation drive 33, and the lens body 31, which is fixed to the lens bracket 32, to move along the circumferential direction of the base 2 (i.e., the circumferential direction of the gear ring). By controlling the forward and reverse rotation of the circumferential rotation drive 33, the lens assembly 3 can move clockwise or counterclockwise along the circumference of the base 2. The range of motion angle is continuously adjustable within 360°, meeting the monitoring needs of the equipment for different circumferential positions.

[0051] In one embodiment, such as Figure 5 As shown, the base 2 is also provided with an annular guide ring 6, and the lens bracket 32 ​​is movably mounted on the annular guide ring 6, and the lens bracket 32 ​​can move along the circumferential direction of the annular guide ring 6. The inner ring of the annular guide ring 6 extends towards the center of the annular guide ring 6 and is provided with an inner limiting edge 61, which forms an inner limiting groove 321 with the inner ring surface of the annular guide ring 6. The outer ring of the annular guide ring 6 extends towards the direction away from the center of the annular guide ring 6 and is provided with an outer limiting edge 62, which forms an outer limiting groove 322 with the outer ring surface of the annular guide ring 6. The bottom of the lens bracket 32 ​​is provided with an inner locking part and an outer locking part, the inner locking part locking into the inner limiting groove 321, and the outer locking part locking into the outer limiting groove 322.

[0052] The annular guide ring 6 is fixed to the top of the embedded part by screws, and the hollow part of the annular guide ring 6 is located in the positioning protrusion provided on the top of the embedded part. The annular guide ring 6 has an overall annular plate structure. Its inner and outer diameters are designed according to the size of the base 2 and the movement radius of the lens assembly 3, ensuring that the annular guide ring 6 can fit the installation space of the base 2, and that the lens bracket 32 ​​can cover the monitoring range required by the equipment when it moves along its circumference.

[0053] The inner surface of the annular guide ring 6 (i.e., the side wall near its own center) extends vertically towards the center to form an inner limiting edge 61. The inner limiting edge 61 is an annular protrusion continuously distributed around the annular guide ring 6, and its extension length is adapted to the size of the inner locking part of the lens bracket 32. The upper surface of the inner limiting edge 61 is flush with the upper surface of the annular guide ring 6, and the lower surface of the inner limiting edge 61 and the inner surface of the annular guide ring 6 together enclose an inner limiting groove 321 with an L-shaped cross section. Correspondingly, the outer ring surface of the annular guide ring 6 (i.e., the side wall away from its own center) extends vertically away from the center to form an outer limiting edge 62. The outer limiting edge 62 is also an annular protrusion continuously distributed along the circumference of the annular guide ring 6, and its extension length is adapted to the inner limiting edge 61. The upper surface of the outer limiting edge 62 is flush with the upper surface of the annular guide ring 6, and the lower surface of the outer limiting edge 62 and the outer ring surface of the annular guide ring 6 together form an outer limiting groove 322 with an L-shaped cross section.

[0054] The lower surface of the base plate of the lens bracket 32 ​​is provided with an inner locking part and an outer locking part that are adapted to the inner limiting groove 321 and the outer limiting groove 322 respectively. Both the inner locking part and the outer locking part have a stepped structure. After installation, the lens bracket 32 ​​is equivalent to being clamped on the inner and outer ring surfaces of the annular guide ring 6.

[0055] When the circumferential rotation drive 33 drives the lens assembly 3 to move, the lens bracket 32, under the action of the drive gear 331 and the gear ring, tends to move along the circumference of the base 2. Since the lens bracket 32 ​​engages with the inner limiting groove 321 and the outer limiting groove 322 of the annular guide ring 6 through the inner and outer locking parts respectively, the annular guide ring 6 is fixed to the base 2 and cannot move. Therefore, the inner limiting groove 321 and the outer limiting groove 322 will constrain the inner and outer locking parts, restricting the displacement of the lens bracket 32 ​​in the radial direction (towards or away from the center of the base 2), and at the same time restricting the displacement of the lens bracket 32 ​​in the axial direction (up and down). Under this constraint, the lens bracket 32 ​​can only slide smoothly along the circumferential direction of the annular guide ring 6, thereby driving the lens body 31 to move circumferentially along the preset trajectory, improving the stability of the movement and effectively reducing problems such as blurred images and ghosting caused by unstable movement.

[0056] In one embodiment, such as Figure 6 As shown, the fill light assembly 4 includes a fill light body 41 and a fill light bracket 42. The lens bracket 32 ​​has a fixing plate on the side away from the center of the base 2, and the fill light bracket 42 is connected to the fixing plate.

[0057] The supplementary light body 41 uses an infrared LED light board (suitable for supplementary lighting needs in nighttime or low-light environments). The light board integrates multiple evenly distributed infrared LED beads, with the light emission direction of the beads matching the imaging direction of the lens body 31, ensuring the supplementary lighting range completely covers the lens's monitoring field of view. The supplementary light body 41 has a metal heat dissipation shell made of aluminum alloy with an anodized surface, which quickly dissipates the heat generated by the LED beads during operation, preventing damage or accelerated light decay due to overheating. A terminal block is located on one side of the heat dissipation shell for connecting the internal power and control lines, enabling power supply and brightness adjustment of the supplementary light body 41.

[0058] The fill light bracket 42 is L-shaped. The fill light body 41 is connected to one side of the fill light bracket 42 by screws. The other side of the fill light bracket 42 is connected to the front side plate of the lens bracket 32 ​​by screws. After installation, the fill light body 41 is in a suspended state.

[0059] By rigidly connecting the supplementary lighting component 4 with the lens bracket 32 ​​fixing plate, the synchronous movement of the supplementary lighting component 4 and the lens component 3 is achieved, which completely solves the problem of mismatch between the supplementary lighting area and the monitoring area caused by fixing the supplementary lighting component 4 in the prior art. This ensures that every detail in the lens monitoring area can receive sufficient and uniform supplementary lighting in low light environment, and significantly improves the brightness and clarity of the monitoring image.

[0060] In one embodiment, such as Figures 6 to 7 As shown, the lens assembly 3 also includes a pitch drive 34. The lens body 31 is rotatably mounted on the lens bracket 32, and the pitch drive 34 is located on one side of the lens bracket 32 ​​and is connected to the lens body 31 in a transmission manner.

[0061] The pitch drive 34 uses a miniature servo motor, possessing high-precision angle control capabilities. It can precisely adjust the rotation angle via pulse signals output from the controller, meeting the fine-tuning requirements of the lens body 31's pitch angle. The pitch drive 34 is fixed to the side plate of the lens bracket 32 ​​via a mounting base. The mounting base and lens bracket 32 ​​are rigidly connected by bolts, and the side of the mounting base has a locating pin hole that matches the locating pin on the lens bracket 32, ensuring that the output shaft axis of the pitch drive 34 is coaxial with the rotation axis of the lens body 31. The end of the output shaft of the pitch drive 34 has a keyway for transmission connection with the lens body 31.

[0062] The lens body 31 has cylindrical pivots on both sides of the lens housing 311. The pivots and the lens housing 311 are integrally formed, and the axis of the pivots coincides with the output axis of the pitch drive 34. The side plate of the lens bracket 32 ​​has a circular bearing hole corresponding to the pivot position. A miniature deep groove ball bearing is embedded in the hole. The inner ring of the deep groove ball bearing is interference-fitted with the pivot of the lens housing 311, and the outer ring of the deep groove ball bearing is interference-fitted with the bearing hole. Through the rotation support of the bearing, the lens body 31 can rotate flexibly around the pivot axis to achieve pitch angle adjustment.

[0063] In one embodiment, such as Figure 8 As shown, the lens body 31 includes a lens housing 311, a lens body 312, and a transmission assembly 313. The inner wall of the lens housing 311 is provided with a first gear portion 3111, and the outer wall of the lens body 312 is provided with a second gear portion 3121. The transmission assembly 313 includes a transmission power component 3131 and a transmission gear 3132. The output end of the transmission power component 3131 is connected to the transmission gear 3132. The transmission gear 3132 is located between the first gear portion 3111 and the second gear portion 3121 and meshes with both. The lens body 31 also includes a lens mounting bracket with a mounting cavity. The lens body 312 is movably disposed within the mounting cavity. The side wall of the mounting cavity is provided with an auxiliary gear portion that meshes with the second gear portion 3121.

[0064] A first gear portion 3111 is provided in the middle of the inner sidewall of the lens housing 311. The first gear portion 3111 has internal teeth (with a standard involute tooth shape) continuously distributed circumferentially along the inner wall. A second gear portion 3121 is provided in the outer sidewall of the lens body 312. The second gear portion 3121 has external teeth (with a tooth shape that matches the first gear portion 3111) continuously distributed circumferentially along the lens body 312.

[0065] The transmission assembly 313 includes a transmission power component 3131 and a transmission gear 3132. The transmission power component 3131 is a micro stepper motor with forward and reverse rotation control capability. The transmission gear 3132 is a standard cylindrical gear, and the central shaft hole of the transmission gear 3132 is interference-fitted with the output shaft of the transmission power component 3131.

[0066] The inner wall of the lens mount is provided with a mounting cavity that fits the lens barrel of the lens body 312. The side wall of the mounting cavity is provided with auxiliary gear parts distributed circumferentially, and the auxiliary gear parts and the transmission gear 3132 are respectively located on both sides of the lens body 312.

[0067] When the tilt angle of the lens body 31 needs to be adjusted, a control signal is sent to the tilt drive 34. The output shaft of the tilt drive 34 drives the rotation shaft of the lens body 31 to rotate around the axis, thereby adjusting the tilt angle. When the angle of the lens body 312 needs to be adjusted, a control signal is sent to the transmission power component 3131. The output shaft of the transmission power component 3131 drives the transmission gear 3132 to rotate. Since the transmission gear 3132 meshes with both the first gear portion 3111 of the lens housing 311 and the second gear portion 3121 of the lens body 312, according to the relative motion principle of gear transmission, the transmission gear 3132 will perform planetary motion along the internal teeth of the first gear portion 3111. The planetary motion of the transmission gear 3132, through meshing with the second gear portion 3121, drives the lens body 312 to rotate.

[0068] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A multi-lens monitoring device, characterized in that, The device includes a dome, a base, multiple lens assemblies, and multiple lighting components. The multiple lens assemblies and multiple lighting components are disposed in the cavity formed by the dome and the base. The lens assemblies are circumferentially movable relative to the base, and the lighting components move synchronously circumferentially when the lens assemblies move. The bottom of the dome is provided with a bottom mounting member, which is connected to the base. The dome includes a first light-transmitting part, a second light-transmitting part, and a light-blocking part. The light-blocking part is disposed between the first light-transmitting part and the second light-transmitting part. The first light-transmitting part is configured to transmit natural light, the second light-transmitting part is configured to transmit infrared light, and the light-blocking part is configured to block the optical crosstalk between the natural light transmitted by the first light-transmitting part and the infrared light transmitted by the second light-transmitting part inside the dome.

2. The multi-lens monitoring device according to claim 1, characterized in that, The light-blocking part has a ring-shaped structure, with the first light-transmitting part located above the light-blocking part and the second light-transmitting part located below the light-blocking part.

3. The multi-lens monitoring device according to claim 1, characterized in that, The lens assembly includes a lens body, a lens bracket, and a circumferential rotation drive. The lens body is mounted on the lens bracket, and the circumferential rotation drive is installed on the lens bracket. A transmission coupling component is provided on the base, and the circumferential rotation drive is connected to the transmission coupling component. The lens body can move along the circumferential direction of the base under the drive of the circumferential rotation drive.

4. A multi-lens monitoring device according to claim 3, characterized in that, The transmission component is a gear ring, the inner ring of which has a meshing portion, and the power output end of the circumferential rotation drive component is provided with a drive gear, which fits with the meshing portion.

5. A multi-lens monitoring device according to claim 3, characterized in that, The base is also provided with an annular guide ring, the lens bracket is movably mounted on the annular guide ring, and the lens bracket can move along the circumferential direction of the annular guide ring.

6. A multi-lens monitoring device according to claim 5, characterized in that, The inner ring of the annular guide ring extends towards the center of the annular guide ring and has an inner limiting edge, which forms an inner limiting groove with the inner ring surface of the annular guide ring. The outer ring of the annular guide ring extends away from the center of the annular guide ring and has an outer limiting edge, which forms an outer limiting groove with the outer ring surface of the annular guide ring. The bottom of the lens bracket has an inner locking part and an outer locking part, with the inner locking part locking into the inner limiting groove and the outer locking part locking into the outer limiting groove.

7. A multi-lens monitoring device according to claim 3, characterized in that, The fill light assembly includes a fill light body and a fill light bracket. A fixing plate is provided on the side of the lens bracket away from the center of the base, and the fill light bracket is connected to the fixing plate.

8. A multi-lens monitoring device according to claim 3, characterized in that, The lens assembly also includes a pitch drive, the lens body is rotatably mounted on the lens bracket, and the pitch drive is located on one side of the lens bracket and is connected to the lens body in a transmission manner.

9. A multi-lens monitoring device according to claim 3, characterized in that, The lens body includes a lens housing, a lens body, and a transmission assembly. The inner sidewall of the lens housing is provided with a first gear portion, and the outer sidewall of the lens body is provided with a second gear portion. The transmission assembly includes a transmission power component and a transmission gear. The output end of the transmission power component is connected to the transmission gear. The transmission gear is located between the first gear portion and the second gear portion and meshes with both the first gear portion and the second gear portion.

10. A multi-lens monitoring device according to claim 9, characterized in that, The lens body also includes a lens mounting bracket, which has a mounting cavity. The lens body is movably disposed in the mounting cavity. The side wall of the mounting cavity is provided with an auxiliary gear, which meshes with the second gear.

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