camera

Abstract

The application provides a camera, which comprises a main shell, a front cover, a first lens assembly and a mirror assembly. The main shell comprises a first shell side wall and a second shell side wall opposite to each other in the left-right direction. The front cover covers the front side of the main shell. The first lens assembly comprises a pitch rotation motor and a first lens. The mirror assembly is located on the light path of light incident to the first lens, and comprises a horizontal rotation motor and a mirror. The camera is configured such that when the mirror rotates from a first horizontal boundary position to a second horizontal boundary position and the first lens remains stationary all the time, the optical axis of the first lens deviates from the center of the reflecting surface along the horizontal intersection locus of the mirror; and when the first lens rotates from a first pitch boundary position to a second pitch boundary position and the mirror remains stationary all the time, the optical axis of the first lens deviates from the center of the reflecting surface along the pitch intersection locus of the mirror. Thus, the overall structure is simple and small in size.

Description

Technical Field

[0001] This invention relates to the field of surveillance technology, and more particularly to a camera. Background Technology

[0002] There are many types of cameras on the market. One type of surveillance camera supports horizontal and vertical rotation, abbreviated as PT camera. PT cameras can be used in scenarios with a large monitoring range and where details within the field of view are of interest. If the details are important, the lens of the PT camera needs to be rotated frequently. Since the horizontal and vertical rotation of the PT camera lens requires separate motor drives, and in most cases, the structure of the PT camera is relatively complex, requiring a lens to connect to both the horizontal and vertical motors, a reasonable layout and complex transmission are needed, further complicating the structure and resulting in a large size for the PT camera. Therefore, it is necessary to propose an improved camera. Summary of the Invention

[0003] This application provides an improved camera with a simple overall structure and small size.

[0004] This application provides a camera, including:

[0005] The main unit housing includes a first shell sidewall and a second shell sidewall opposite to each other in the left-right direction; a front cover, covering the front side of the main unit housing, includes a rectangular first through hole, wherein a first longitudinally extending side of the first through hole is close to the second shell sidewall relative to the second shell sidewall and is at a first distance from the first shell sidewall, and a second longitudinally extending side of the first through hole is at a second distance from the second shell sidewall, wherein the first distance is less than the second distance; a first lens assembly, disposed within the main unit housing near the second shell sidewall, the first lens assembly including a pitch rotation motor and a first lens, the first lens including a first lens element and a first image sensor, the first image sensor sensing light incident on the first lens element through the first through hole; a reflector assembly, located on the optical path of light incident on the first lens and disposed within the main unit housing near the first shell sidewall, the reflector assembly including a horizontal rotation motor and a reflector. The reflector is rectangular, with its upper and lower edges extending horizontally. The first lens element faces the reflecting surface of the reflector. The reflector includes a first horizontal boundary position and a second horizontal boundary position, and rotates horizontally between these two positions. The first lens includes a first pitch boundary position and a second pitch boundary position, and rotates in pitch between these two positions. The camera is configured such that when the reflector rotates from the first horizontal boundary position to the second horizontal boundary position while the first lens remains stationary, the trajectory of the intersection point between the optical axis of the first lens and the horizontal axis of the reflector deviates from the center of the reflecting surface; and when the first lens rotates from the first pitch boundary position to the second pitch boundary position while the reflector remains stationary, the trajectory of the intersection point between the optical axis of the first lens and the pitch axis of the reflector deviates from the center of the reflecting surface.

[0006] Furthermore, the horizontal intersection point trajectory is not collinear with the center of the reflective surface, and the pitch intersection point trajectory is not collinear with the center of the reflective surface. Furthermore, the shaft of the horizontal rotation motor extends vertically, and the shaft of the pitch rotation motor extends horizontally; the central axis of the shaft of the horizontal rotation motor is not coplanar with the central axis of the shaft of the pitch rotation motor.

[0007] Furthermore, the front cover also includes a second through hole located below the first through hole. The camera includes a second lens assembly disposed within the second through hole, and the area of ​​the second through hole is smaller than the area of ​​the first through hole. Furthermore, the field of view of the second lens assembly is larger than that of the first lens assembly. Furthermore, the second lens assembly includes a second lens, which includes a second lens element and a second image sensor.

[0008] The camera is configured to: in response to an object captured by the second lens, determine a first control command for adjusting the horizontal angle of the reflector and / or a second control command for adjusting the pitch angle of the first lens based on a mapping matrix between the second lens and the first lens; correspondingly, in response to the first control command, the horizontal rotation structure executes the horizontal angle adjustment so that the reflector adjusts the horizontal angle; and / or, in response to the second control command, the pitch drive structure executes the pitch angle adjustment, causing the first lens to adjust the pitch angle so that when the camera is in P coordinate and T coordinate, the object is in a preset position in the image captured by the first lens.

[0009] Furthermore, the second lens assembly is located below the reflector, and the field of view of the second lens assembly covers the field of view of the first lens assembly; the camera is configured such that the horizontal angle of the reflector is the value of the inverse tangent function of the P coordinate; and the pitch angle is the value of the inverse tangent function of the T coordinate. Furthermore, the horizontal rotation motor and the pitch rotation motor are direct-drive motors.

[0010] Furthermore, the camera includes a housing, which includes a body and a front cover. The front cover covers the front side of the body, and the main housing is housed within the housing. The first lens and the reflector are housed within the main housing. The reflector assembly includes a reflector mounting bracket, and the reflector is fixed to the reflector mounting bracket. The reflector mounting bracket includes a motor connection end and a rotatable end, which are positioned opposite each other on the upper and lower sides of the reflector. The motor connection end is connected to the horizontal rotating motor, and the rotatable end is rotatably connected to the main housing. The motor connection end includes a mounting hole, and a first flat structure is provided on the inner wall of the mounting hole along the axial direction of the hole. The horizontal rotating motor includes a motor shaft, and a second flat structure is provided on the outer wall of the motor shaft along the axial direction of the motor shaft. The motor shaft is inserted into the mounting hole, and the first flat structure and the second flat structure are mutually restrictive.

[0011] Furthermore, the motor shaft is provided with a threaded hole extending radially along the motor shaft, and the motor connection end is provided with a mounting through hole extending radially along the motor connection end, the mounting through hole passing through the mounting hole; the camera includes a fixing member, the fixing member passing through the threaded hole and the mounting through hole respectively, fixing the motor shaft and the motor connection end in the horizontal direction.

[0012] In some embodiments, the camera of this application includes a main housing, a first lens assembly, a front cover, and a reflector assembly. The main housing includes a first and a second housing sidewall opposite each other in the left-right direction. The front cover covers the front of the main housing. The first lens assembly is located inside the main housing near the second housing sidewall, and includes a pitch motor and a first lens. The reflector assembly is located in the optical path from which light enters the first lens and is also located inside the main housing near the first housing sidewall. The reflector assembly includes a horizontal rotation motor and a reflector. The camera is configured such that when the reflector rotates from a first horizontal boundary position to a second horizontal boundary position while the first lens remains stationary, the trajectory of the intersection point of the optical axis of the first lens and the horizontal axis of the reflector deviates from the center of the reflecting surface. When the first lens rotates from a first pitch boundary position to a second pitch boundary position while the reflector remains stationary, the trajectory of the intersection point of the optical axis of the first lens and the pitch axis of the reflector deviates from the center of the reflecting surface. Thus, the overall structure is simple and the size is small. Attached Figure Description

[0013] Figure 1 The image shown is a perspective view of a camera according to an embodiment of this application; Figure 2 The image shown is a front view of a camera according to an embodiment of this application; Figure 3 As shown Figure 1 The exploded view of the camera shown; Figure 4 As shown Figure 1 A three-dimensional schematic diagram of the camera's reflector assembly and first lens assembly; Figure 5 As shown Figure 1 The front view of the camera's reflector assembly and first lens assembly is shown. Figure 6 As shown Figure 4 The reflector and first lens assembly shown are along Figure 4 Sectional view of the middle BB line; Figure 7 As shown Figure 4 The front view of the reflector and the first lens shown; Figure 8 The diagram shown is a schematic representation of the first viewpoint of the reflector and the first viewing window glass. Figure 9 The diagram shows a second perspective view of the reflector and the first viewing window glass; Figure 10 As shown Figure 4 The main unit and main unit casing shown are along Figure 4 A sectional view of line AA in the diagram; Figure 11 As shown Figure 4 The diagram shown is an exploded view of the main unit and its casing. Figure 12 As shown Figure 10 The diagram shown is a magnified view of a portion at point D. Figure 13 As shown Figure 10 The diagram shown is a magnified view of a portion at point C. Figure 14 As shown Figure 11 The diagram shows the front assembly of the reflector and the horizontal rotating motor. Figure 15 As shown Figure 11 The diagram shows the reverse side assembly of the reflector and the horizontal rotating motor; Figure 16 As shown Figure 1 A three-dimensional front view of the camera's first lens assembly and main housing; Figure 17 As shown Figure 1 Rear view of the first lens assembly and main unit housing of the camera shown; Figure 18 As shown Figure 4 The shown host and host casing along Figure 4 Sectional view of the middle BB line; Figure 19 As shown Figure 1 An exploded view of the first lens assembly and main unit housing of the camera shown. Figure 20 As shown Figure 18 The diagram shown is a magnified view of a portion at point F. Figure 21 As shown Figure 16 The diagram shows the main housing and the vertical bearing. Figure 22 As shown Figure 21 The diagram shows a magnified view of the area at point H. Figure 23 As shown Figure 10 The diagram shown is a magnified view of a portion of point G. Figure 24 As shown Figure 19 The diagram shows an explosion of the first lens and lens mount. Figure 25 As shown Figure 19 The diagram shows the assembly of the first lens and the lens bracket; Figure 26 As shown Figure 1 The diagram shows the wiring harness of the camera and the main unit housing. Figure 27 As shown Figure 26 An exploded view of the wiring harness and the main unit housing; Figure 28 As shown Figure 27 The diagram shows the wiring harness and lens mounting bracket. Figure 29 As shown Figure 28 The diagram shown is a magnified view of a portion of point J. Figure 30 As shown Figure 27 The side view of the wiring harness and lens mounting bracket shown; Figure 31 The diagram shown is a schematic diagram of another embodiment of the winding post of the camera of this application; Figure 32 As shown Figure 28 The diagram shows the change in the relative position of the cable harness and the winding post as the lens tail moves from the highest point to the lowest point. Figure 33 As shown Figure 1 Another 3D schematic diagram of the camera shown, illustrating the fill light assembly. Figure 34 As shown Figure 33 The diagram shows a magnified view of the area at point K. Figure 35 As shown Figure 1 A schematic diagram of the radar module and front cover in the camera shown; Figure 36 As shown Figure 35 An exploded view of the radar module and front cover shown; Figure 37 As shown Figure 36 An exploded view of the radar module shown. Figure 38 As shown Figure 37 An exploded view of the radar support frame and radar panel shown. Figure 39 As shown Figure 36 A schematic diagram of the bottom wall structure of the shell shown; Figure 40 As shown Figure 37 A top view of the radar module shown; Figure 41 As shown Figure 40 A cross-sectional view of the radar module shown along line TT; Figure 42 As shown Figure 37 The diagram shown is an exploded view of the radar panel and radome. Figure 43 As shown Figure 36 The diagram shown illustrates the explosion of the radome and the casing. Figure 44 As shown Figure 43 A schematic diagram of the radome and housing shown; Figure 45 As shown Figure 1 A top view of the first and second lens assemblies shown. Figure 46 As shown Figure 1 A front view of the first lens assembly and the second lens assembly shown; Figure 47 As shown Figure 1 A schematic diagram showing the horizontal rotation of the reflector assembly; Figure 48 As shown Figure 1 A schematic diagram showing the pitch rotation of the first lens assembly; Figure 49 As shown Figure 1 A magnified schematic diagram of an image captured by the first lens assembly and the second lens assembly; Figure 50 As shown Figure 1 The diagram shows the horizontal and vertical rotation angles of the camera. Figure 51 As shown Figure 1 The diagram shows the linkage between the first lens assembly and the second lens assembly. Figure 52 As shown Figure 51The diagram shows the image partitioning of the second lens assembly. Detailed Implementation

[0014] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0015] To address the technical problem of increased size and complexity in PT (Potential Transmission) cameras, this application discloses a camera comprising a main housing, a first lens assembly, a front cover, and a reflector assembly. The main housing includes a first and a second housing sidewall facing each other in the left-right direction. The front cover covers the front of the main housing. The first lens assembly is located within the main housing near the second housing sidewall and includes a pitch motor and a first lens. The reflector assembly is situated in the optical path from which light enters the first lens and is also located within the main housing near the first housing sidewall. The reflector assembly includes a horizontal rotation motor and a rectangular reflector with its upper and lower edges extending horizontally. The reflector has a first horizontal boundary position and a second horizontal boundary position, and rotates horizontally between these positions. The first lens has a first pitch boundary position and a second pitch boundary position, and rotates in pitch between these positions. The camera is configured such that when the reflector rotates from a first horizontal boundary position to a second horizontal boundary position while the first lens remains stationary, the trajectory of the intersection point between the optical axis of the first lens and the horizontal axis of the reflector deviates from the center of the reflective surface. Similarly, when the first lens rotates from a first pitch boundary position to a second pitch boundary position while the reflector remains stationary, the trajectory of the intersection point between the optical axis of the first lens and the pitch axis of the reflector deviates from the center of the reflective surface. This pitch rotation motor, connected to the first lens, drives the first lens to rotate in pitch. The first lens only achieves simple pitch rotation, resulting in a smaller pitch structure and a simpler overall structure and smaller size. Furthermore, this configuration ensures that the trajectory of the intersection point between the optical axis of the first lens and the horizontal axis of the reflector is not collinear with the center of the reflective surface, enabling both horizontal rotation of the reflector and pitch rotation of the first lens to capture images of the monitored area. It also achieves the linkage between the first and second lens assemblies and contributes to the miniaturization of the camera.

[0016] Figure 1 The image shown is a three-dimensional schematic diagram of the camera 10 according to an embodiment of this application. Figure 2 The image shown is a front view of the camera 10 according to an embodiment of this application. Figure 3 As shown Figure 1An exploded view of camera 10 is shown. Figure 1 and Figure 2 As shown, the camera 10 in this embodiment may include, but is not limited to, a housing assembly 11 and a host 12 housed within the housing assembly 11. The host 12 includes a first lens assembly 13, a second lens assembly 14, and a reflector assembly 15. The second lens assembly 14 is used to capture images of the monitored area and can be referred to as a panoramic lens assembly. The first lens assembly 13 is used to capture detailed or magnified images of the images captured by the second lens assembly 14 and can be referred to as a detail lens assembly. The reflector assembly 15 is located in the optical path of light incident on the first lens assembly 13 and is used to reflect light back to the first lens assembly 13. Thus, imaging can be achieved through the reflection of light by the reflector assembly 15.

[0017] The field of view of the first lens assembly 13 is smaller than that of the second lens assembly 14. Thus, the monitoring area captured by the second lens assembly 14 covers the monitoring area captured by the first lens assembly 13, allowing for detailed magnification of the image captured by the second lens assembly 14. The first lens assembly 13 includes a first lens 132, which is tiltable. The reflector assembly 15 is horizontally rotatable. The second lens assembly 14 is stationary; see below for a detailed explanation. Continuing... Figure 2 As shown, the optical axis 141 of the second lens assembly 14 and the optical axis 131 of the first lens assembly 13 are perpendicular to each other on the horizontal plane. Thus, when the first lens assembly 13 is in a horizontal position, the first lens assembly 13 and the second lens assembly 14 can minimize the size of the camera 10 in both the first direction W and the vertical direction. The first direction W can be either left or right.

[0018] Combination Figures 1 to 3 As shown, the housing assembly 11 includes a front cover 16, which is used to cover the outside of the main unit 12, protecting the main unit 12 and facilitating light entry for image capture. The front cover 16 has a first through-hole 161 and a second through-hole 162. The first through-hole 161 is configured to allow light to enter the first lens assembly 13, and can be referred to as a first viewing window. The second through-hole 162 corresponds to the second lens assembly 14 and is configured to allow light to enter the second lens assembly 14, and can be referred to as a second viewing window. The first through-hole 161 is located above the second through-hole 162. This vertical arrangement of the first through-hole 161 and the second through-hole 162 ensures that the first lens assembly 13 is located above the second lens assembly 14, and the area of ​​the first through-hole 161 is larger than the area of ​​the second through-hole 162. The area of ​​the first through-hole 161 is determined by the reflector and the first lens assembly 13, and the area of ​​the second through-hole 162 is determined by the second lens assembly 14.

[0019] In this design, the vertical dimension of the first through-hole 161 is larger than the vertical dimension of the second through-hole 162, and the horizontal dimension of the first through-hole 161 is equal to or greater than the horizontal dimension of the second through-hole 162. Thus, the area of ​​the first through-hole 161 that receives light is larger than the area of ​​the second through-hole 162 that receives light, which is more conducive to the light incident on the reflector assembly 15. Furthermore, the second through-hole 162 is smaller than the first through-hole 161, which also contributes to the miniaturization of the device. Figure 2 As shown, the reflector assembly 15 is located on the optical path from which light enters the first lens assembly 13, thus expanding the visible area. The reflector assembly 15 includes a reflector 151. The reflector 151 is positioned corresponding to the first through-hole 161 and is configured to reflect light entering through the first through-hole 161 back to the first lens assembly 13. In this way, the first lens assembly 13 and the second lens assembly 14 achieve dual-lens image capture, and the reflector 151 allows light to enter the first lens assembly 13, expanding the visible area, resulting in a simple structure.

[0020] Furthermore, the first lens 132 and the reflector 151 are respectively disposed within the first through hole 161, with the reflector 151 extending vertically and the first lens 132 facing the reflector 151. Thus, the vertical extension of the reflector 151 facilitates the entry of light into the first lens 132 when the reflector 151 rotates horizontally. Combined with the tilt capability of the first lens 132, this enables both horizontal and tilt shooting of the first lens assembly 13. The reflector 151 can be rectangular. Compared to a circular reflector 151, a rectangular reflector 151 saves space and cost. For example, the rectangle can be oblong. The long side of the reflector 151 can extend horizontally, and the short side can extend vertically. Alternatively, the rectangle can be square.

[0021] Figure 4 As shown Figure 1 A three-dimensional schematic diagram of the reflector assembly and the first lens assembly 13 in the camera 10 shown. Figure 5 As shown Figure 1 The image shows a front view of the reflector assembly and the first lens assembly 13 of the camera 10. Figures 4 to 5As shown, the reflector assembly 15 also includes a horizontal rotation structure connected to the reflector 151. The horizontal rotation structure is configured to drive the reflector 151 to rotate horizontally, thereby achieving horizontal rotation of the reflector 151. The horizontal rotation structure may include, but is not limited to, a horizontal rotation motor 21. The horizontal rotation motor 21 is connected to the reflector 151 and is used to drive the reflector 151 to rotate horizontally. The horizontal rotation motor 21 and the second lens assembly 14 are located below the reflector 151, such that the horizontal rotation motor 21 and the second lens assembly 14 are on the same side in the vertical direction of the reflector 151. When the horizontal rotation motor 21 rotates, it drives the reflector 151 to rotate horizontally. Thus, the first lens assembly 13 itself does not need to rotate horizontally; the reflector assembly 15 can achieve horizontal rotation, and the image of the monitored area is presented on the first lens assembly 13 through the reflection of light from the reflector 151.

[0022] continue Figure 5 As shown, the horizontal rotation motor 21 can be a direct-drive motor. Thus, the motor shaft 211 of the horizontal rotation motor 21 is directly connected to the rotating shaft 157 of the reflector assembly 15, with no other transmission components between them. In this way, the horizontal rotation motor 21 acts as a power source, directly driving the reflector assembly 15 to move, reducing the transmission of other components, saving costs, and facilitating structural miniaturization. Simultaneously, it enables the horizontal movement of the reflector 151, effectively increasing the monitoring range of the camera 10. (Continuing...) Figure 5 As shown, the reflector 151 includes a first side 153 and a second side 154 facing each other in a first direction W. A first lens 132 is located on the second side 154, facing the reflector 151. The axis of rotation 157 of the reflector 151 is offset from the center 1512 of the reflecting surface 1511 of the reflector 151, and is closer to the second side 154 relative to the first side 153. Thus, the second side 154 of the reflector 151 is close to the first lens 132, resulting in less image distortion. Furthermore, the first side 153 of the reflector 151 is far from the first lens 132, allowing for a wider shooting range. Simultaneously, the axis of rotation 157 of the reflector 151 is offset from the center 1512 of the reflecting surface 1511, and compared to the shooting range of a symmetrical structure of the reflector 151, the second side 154 of the reflector 151 is shorter from the axis of rotation 157, resulting in a smaller footprint.

[0023] Figure 6 As shown Figure 4 The reflector 151 and the first lens assembly 13 shown are along Figure 4 A cross-sectional view along the BB line. Figure 7 As shown Figure 4 The diagram shows a front view of the reflector 151 and the first lens 132. Figure 6 and Figure 7As shown, the reflector 151 includes a first horizontal boundary position 155 and a second horizontal boundary position 156. The reflector 151 rotates horizontally between the first horizontal boundary position 155 and the second horizontal boundary position 156. When the reflector 151 rotates from the first horizontal boundary position 155 to the second horizontal boundary position 156 while the first lens 132 remains stationary, the trajectory 22 of the intersection point between the optical axis 131 of the first lens 132 and the horizontal intersection point of the reflector 151 is deviated from the center 1512 of the reflecting surface 1511 of the reflector 151. Thus, the trajectory 22 of the intersection point between the optical axis 131 of the first lens 132 and the horizontal intersection point of the reflector 151 is not collinear with the center 1512 of the reflecting surface 1511 of the reflector 151, enabling the first lens assembly 13 to rotate horizontally to capture images of the monitored area, and also achieving miniaturization of the camera 10. Figure 6 The first horizontal boundary position 155 and the second horizontal boundary position 156 in the example are only examples and do not limit the specific positions of the first horizontal boundary position 155 and the second horizontal boundary position 156.

[0024] like Figure 6 and Figure 7 As shown, the reflector 151 is positioned at an initial position, for example, when the angle v between the extension line of the reflective surface 1511 of the reflector 151 and the extended surface of the first lens 132 in the first direction W is 45 degrees. The angle by which the reflector 151 rotates at this initial position can be called the horizontal rotation angle. A horizontal rotation towards the first horizontal boundary position 155 away from the first lens 132 can have a negative horizontal rotation angle, while a horizontal rotation towards the second horizontal boundary position 156 closer to the first lens 132 can have a positive horizontal rotation angle. The range of the horizontal rotation angle can be greater than -15 degrees and less than +15 degrees.

[0025] Continue as Figure 6 and Figure 7 As shown, the image field of view coverage is achieved through the horizontal movement of the reflector 151 and the vertical movement of the first lens assembly 13, whereby the image field of view coverage includes both the horizontal and vertical field of view. For the second lens assembly 14 to detect a human body and simultaneously capture an image with the first lens assembly 13, it is necessary to ensure that the field of view of the first lens assembly 13 covers the field of view of the second lens assembly 14 through the PT movement.

[0026] The horizontal movement of the reflector 151 is achieved through direct motor drive, with a movement range of ±c. The horizontal field of view that the reflector 151 can cover is: D = c × 2 + b h D≥a h To meet the demand, where a h For the horizontal field of view of the second lens assembly 14, b hThe horizontal field of view of the first lens assembly 13 is defined, and the field of view of the second lens assembly 14 is greater than that of the first lens assembly 13. The rotation axis 157 of the reflector 151 is on the same horizontal plane as the optical axis 131 of the first lens assembly 13, and the distance L between them should be as close as possible. However, to avoid interference between the reflector 151 and the first lens assembly 13, affecting rotation, the distance L must be at least greater than zero. Thus, light rays can be incident through the light incident range 158 of the reflector 151. Since the reflecting surface 1511 of the reflector 151 is not rotated to the back or completely perpendicular to the first lens 132, at least part of the light rays are incident through the light incident range 158 of the reflector 151. Figure 6 The ellipse shown is within the light incident range of 158.

[0027] Continue as Figure 6 and Figure 7 As shown, the vertical field of view that the first lens assembly 13 can cover as a whole is F = e × 2 + b v F≥a v To meet the needs, where a v b is the vertical field of view of the second lens assembly 14. v Let be the vertical field of view of the first lens assembly 13, and let e be the range of motion of the first lens assembly 13 in vertical motion via direct drive. Thus, by controlling the horizontal rotation of the reflector 151 and the vertical motion of the first lens 132, the entire field of view can be covered.

[0028] like Figure 7 As shown, the first lens 132 includes a first pitch boundary position 133 and a second pitch boundary position 134. The first lens 132 tilts and rotates between the first pitch boundary position 133 and the second pitch boundary position 134. When the first lens 132 rotates from the first pitch boundary position 133 to the second pitch boundary position 134 while the reflector 151 remains stationary, the trajectory 23 of the intersection point of the optical axis 131 of the first lens 132 and the pitch of the reflector 151 deviates from the center 1512 of the reflecting surface 1511 of the reflector 151. Thus, the trajectory 23 of the intersection point of the optical axis 131 of the first lens 132 and the pitch of the reflector 151 is not collinear with the center 1512 of the reflecting surface 1511 of the reflector 151, enabling the first lens assembly 13 to tilt and rotate to capture images of the monitored area, and also achieving miniaturization of the camera 10. Figure 7 The first pitch boundary position 133 and the second pitch boundary position 134 in the figure are only examples and do not limit the specific positions of the first pitch boundary position 133 and the second pitch boundary position 134.

[0029] Figure 8 The diagram shown is a schematic representation of the first viewing angle of the reflector 151 and the first viewing window glass 1613. Figure 9The diagram shows a second viewpoint of the reflector 151 and the first viewing window 1613. Figure 8 and Figure 9 As shown, a first viewing window 1613 is provided in the first through hole 161. The first viewing window 1613 can seal the reflector 151 and the first lens 132 to protect them. The closer the rotation axis 157 of the reflector 151 is to the first viewing window 1613, the better, so as to meet the requirements of field of view and no black borders in the image.

[0030] Combination Figure 3 As shown, the housing assembly 11 includes an outer shell 17 and a main housing 18. The outer shell 17 includes a body 19 and a front cover 16. The front cover 16 covers the front side of the body 19. The main housing 18 is housed within the outer shell 17, and the front cover 16 covers the front side of the main housing 18. A reflector 151 is housed within the main housing 18. A first lens assembly 13 is disposed within the body 19. The front cover 16 has a first through hole 161. Thus, horizontal and vertical motion are highly integrated into a single main housing 18, effectively reducing the overall size of the camera 10, facilitating installation and assembly, and lowering the overall cost. In some embodiments, the housing assembly 11 also includes a sunshade 20, which covers the top of the outer shell 17 and the main housing 18 to block sunlight.

[0031] Continue to combine Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the main housing 18 includes an opening 182. The opening 182 faces the first through hole 161. A reflector 151 is disposed inside the main housing 18, corresponding to the first through hole 161, and the reflector 151 is positioned close to the first cover sidewall 166 relative to the second cover sidewall 164. The opening 182 accommodates the reflector 151 and the first lens 132, and can communicate with the first through hole 161 to allow light to enter.

[0032] Figure 10 As shown Figure 4 The main unit and main unit housing 18 shown are along Figure 4 A cross-sectional view along line AA in the diagram. (Example) Figure 10As shown, the reflector assembly 15 includes a reflector mounting bracket 152 for supporting the reflector 151. The reflector 151 is fixed to the reflector mounting bracket 152. The reflector mounting bracket 152 includes a motor connection end 1521 and a rotatable end 1522. The motor connection end 1521 is located on the lower side of the reflector 151 and is connected to a horizontal rotation motor 21, used by the horizontal rotation motor 21 to drive the motor connection end 1521 of the reflector 151 to rotate. The rotatable end 1522 is located on the upper side of the reflector 151 and is rotatably connected to the main housing 18, used to drive the reflector 151 to rotate horizontally. Thus, the motor connection end 1521 and the rotatable end 1522 are located on the upper and lower sides of the reflector mounting bracket 152, which is beneficial for the horizontal rotation of the reflector assembly 15 and also facilitates the misalignment of the horizontal rotation motor 21 of the reflector assembly 15 with other components, thereby achieving miniaturization of the camera 10.

[0033] Figure 11 As shown Figure 4 The diagram shows an exploded view of the main unit and its housing 18. Figure 12 As shown Figure 10 A magnified view of a portion at point D is shown. Figure 11 and Figure 12 As shown, the reflector assembly 15 includes a horizontal bearing 24. The horizontal bearing 24 rotates horizontally along with the reflector 151 as the horizontal rotation motor 21 rotates, reducing friction during horizontal rotation and facilitating the horizontal rotation of the reflector 151. The horizontal bearing 24 is located between the rotatable end 1522 and the main housing 18, allowing the rotatable end 1522 to rotate horizontally relative to the main housing 18 via the horizontal bearing 24. Thus, the reflector 151 is supported above by the horizontal bearing 24 and directly connected and supported below by the horizontal rotation motor 21, enabling the reflector assembly 15 to move horizontally. This results in good overall structural stability, direct power transmission, and high transmission efficiency. Furthermore, the horizontal bearing 24 and the horizontal rotation motor 21 are respectively located on the upper and lower sides of the reflector mounting bracket 152, reducing the space required for centralized installation and contributing to a smaller overall size of the camera 10.

[0034] like Figure 11As shown, the reflector mounting bracket 152 includes a front bracket 31 and a rear bracket 32 ​​connected to the rear side of the front bracket 31. The reflector 151 is clamped between the front bracket 31 and the rear bracket 32, which protect and support the reflector 151. The front bracket 31 includes an annular front clamping portion 311, and the rear bracket 32 ​​includes an annular rear clamping portion 321. The reflector assembly 15 includes a mounting buffer 33, which surrounds the side of the reflector 151 and clamps the reflector 151 between the reflector 151 and the front clamping portion 311. The rear clamping portion 321 surrounds the outside of the front clamping portion 311 and presses against the front clamping portion 311. Thus, the reflector 151 is pressed between the front bracket 31 and the rear bracket 32 ​​by the rear clamping part 321, and the mounting buffer 33 surrounds the side of the reflector 151 and clamps between the reflector 151 and the front clamping part 311. Through the compression deformation of the mounting buffer 33, the reflector 151 is squeezed, so that the reflector 151 is securely and reliably fixed.

[0035] The mounting buffer 33 is compressible and deformable. This mounting buffer 33 can be, but is not limited to, a rubber sleeve, which is annular. The rubber sleeve is fitted onto the side of the reflector 151, leaving space for the reflected light from the reflective surface 1511 of the reflector 151. This prevents the rigid connection between the front bracket 31, the rear bracket 32, and the reflector 151 from affecting the reflector 151 without affecting its illumination, thus securing and protecting the reflector 151.

[0036] continue Figure 11 As shown, the aforementioned reflector assembly 15 also includes a buffer pad 34. The buffer pad 34 is sandwiched between the rear side of the rear bracket 32 ​​and the fastener 35 to securely connect the reflector mounting bracket 152 via the rear bracket 32, improving the stability of the fixation. The fastener 35 can be a screw. The buffer pad 34 can be an elastic washer or a metal washer; examples of each are not provided here. (Continued) Figure 11 As shown, the horizontal rotation motor 21 used to drive the horizontal rotation of the reflector assembly 15 is mounted on the motor mounting bracket 28 by four screws, forming an assembly.

[0037] The installation process of the aforementioned mounting buffer 33 and buffer pad 34 is as follows: First, the mounting buffer 33 is fitted onto the side of the reflector 151. Because the mounting buffer 33 has low hardness, it can be compressed and deformed. Then, the reflector 151 is placed on the front bracket 31 of the reflector 151. The reflector 151 is then pressed and installed between the front bracket 31 and the rear bracket 32 ​​of the reflector 151. Since the mounting buffer 33 has low hardness and can be compressed and deformed, it prevents the reflector 151 from directly contacting the structural components, avoiding manufacturing errors that could cause the reflector 151 to crack. The mounting sleeve of the reflector 151 serves both an installation and protection function. Finally, the buffer pad 34 is installed on the rear bracket 32 ​​of the reflector 151 using screws. When the product is not powered on and there is no motor drive, it can effectively provide cushioning and prevent vibration damage to the reflector 151, as follows. Figure 14 The front of the reflector 151 and Figure 15 The back of the reflector 151 is shown.

[0038] Continue as Figure 11 and Figure 12 As shown, the camera 10 also includes a horizontal photoelectric plate 26 and a horizontal photoelectric baffle 27. The horizontal photoelectric plate 26 can detect the rotation angle of the reflector mounting bracket 152. The horizontal photoelectric baffle 27 can limit the displacement of the horizontal photoelectric plate 26 in the longitudinal direction. The horizontal photoelectric plate 26 is sandwiched between the rotatable end 1522 and the horizontal photoelectric baffle 27, and the horizontal photoelectric baffle 27 is fixedly connected to the rotatable end 1522. The horizontal rotation motor 21 and the second lens assembly 14 are located on the same side in the vertical direction of the reflector 151. Thus, the horizontal photoelectric baffle 27 and the horizontal photoelectric plate 26 rotate together with the rotatable end 1522 to detect the rotation angle of the reflector mounting bracket 152.

[0039] The rotatable end 1522 of the reflector mounting bracket 152 corresponding to the aforementioned horizontal photoelectric plate 26 has an initial position. This horizontal photoelectric plate 26 is used in conjunction with a photoelectric switch (not shown in the figure) and can rotate at a specific angle. The photoelectric switch rotates at specific angles, such as 15°, 30°, 45°, etc. The photoelectric switch has a transmitting end and a receiving end. When the horizontal photoelectric plate 26 rotates to the corresponding photoelectric switch, it will block the light emitted from the transmitting end to the receiving end, thus recording the position of the rotatable end 1522 and the rotation angle.

[0040] The fixing member 29, along an axial direction parallel to the horizontal photoelectric baffle 27 and the horizontal photoelectric plate 26, passes through the horizontal photoelectric baffle 27 and the horizontal photoelectric plate 26 and connects to the rotatable end 1522. Thus, the horizontal photoelectric plate 26 and the horizontal photoelectric baffle 27 rotate together with the reflector mounting bracket 152. Furthermore, the fixing member 29 may include a screw. The rotatable end 1522 may include a frustum-shaped end face. This frustum-shaped end face may be truncated cone-shaped. A threaded hole is formed on the frustum-shaped end face along the axial direction, and the screw passes through the horizontal photoelectric baffle 27 and the horizontal photoelectric plate 26 sequentially and connects to the threaded hole.

[0041] Continue as Figures 10 to 12 As shown, the motor connection end 1521 and the rotatable end 1522 are located on the rear bracket 32 ​​and protrude forward from the rear bracket 32, extending to the front bracket 31 and below the reflector 151. This arrangement of the motor connection end 1521 and the rotatable end 1522 not only enables connection but also provides some support for the reflector 151, improving the stability of the reflector 151 connection and thus enhancing the stability of the reflector 151's rotation. Continuing as... Figure 11 and Figure 12 As shown, the reflector assembly 15 also includes a horizontal bearing baffle 25 connected to the rear bracket 32 ​​of the reflector mounting bracket 152, and the horizontal bearing 24 is sandwiched between the horizontal bearing baffle 25 and the main housing 18.

[0042] The installation process of the aforementioned horizontal photoelectric baffle 27, horizontal photoelectric plate 26, horizontal bearing baffle 25, and horizontal bearing 24 is as follows: The horizontal bearing 24 is fixed to the main housing 18 via the horizontal bearing baffle 25. The reflector assembly 15 is connected to the horizontal rotating motor 21. The horizontal bearing 24 passes through the rear bracket 32 ​​of the reflector mounting bracket 152 from bottom to top. Then, the horizontal bearing baffle 25 passes through the horizontal bearing 24 from top to bottom. The horizontal photoelectric baffle 27 and horizontal photoelectric plate 26 are fixed to the rear bracket 32 ​​of the reflector mounting bracket 152 with screws. This sequentially fixes the horizontal photoelectric baffle 27, horizontal photoelectric plate 26, horizontal bearing baffle 25, and horizontal bearing 24 to the rotatable end 1522 of the rear bracket 32 ​​of the reflector mounting bracket 152.

[0043] Figure 13 As shown Figure 10 A magnified view of a portion of point C is shown. Figure 14 As shown Figure 11 The diagram shows a front view of the assembly of the reflector 151 and the horizontal rotating motor 21. Figure 15 As shown Figure 11 The diagram shows the reverse side assembly of the reflector 151 and the horizontal rotating motor 21. Figure 13As shown, the horizontal rotation motor 21 includes a motor shaft 211, and a motor connection end 1521 includes a mounting hole 1525, which has a flat structure. The horizontal rotation motor 21 includes a motor shaft 211, which has a flat structure, and the motor shaft 211 is inserted into the mounting hole 1525. Specifically, the inner wall of the mounting hole 1525 of the motor connection end 1521 has a first flat structure along the axial direction of the hole. The flat structure of the mounting hole 1525 cooperates with the flat structure of the motor shaft 211. Specifically, the outer wall of the motor shaft 211 of the horizontal rotation motor 21 has a second flat structure along the axial direction of the motor shaft 211. In this limiting cooperation between the first flat structure and the second flat structure, the horizontal rotation motor 21 can drive the reflector 151 to rotate horizontally.

[0044] Combination such as Figure 11 As shown, the motor shaft 211 has a threaded hole (not shown in the figure) radially. The motor connection end 1521 includes a mounting through hole 1523 corresponding to the position of the threaded hole, and the axis of the mounting through hole 1523 is perpendicular to the axis of the mounting hole 1525. Thus, the motor connection end 1521 has a mounting through hole 1523 extending radially along the motor connection end 1521, and the mounting through hole 1523 passes through the mounting hole 1525. In this way, the motor shaft 211 and the motor connection end 1521 of the horizontal rotating motor 21 can be mounted and fixed together by screws 1524, which can eliminate the motion angle error caused by the flat fit clearance.

[0045] Figure 16 As shown Figure 1 A front perspective view of the first lens assembly 13 and the main housing 18 of the camera 10 shown. Figure 17 As shown Figure 1 Rear view of the first lens assembly 13 and main housing 18 of the camera 10 shown. Figure 16 and Figure 17 As shown, the first lens assembly 13 also includes a pitch motor 41 connected to the first lens 132. The pitch motor 41 drives the first lens 132 to pitch. Thus, the pitch motor 41 is connected to the first lens 132, driving the first lens 132 to pitch. The horizontal rotation motor 21 drives the reflector assembly 15 to rotate horizontally, and the pitch motor 41 drives the first lens 132 to rotate vertically. Through the principle of reflection imaging, the camera 10 can achieve long-distance, large-area monitoring, and the overall structure is simple, small in size, and low in cost.

[0046] The pitch motor 41 is a direct-drive motor. Thus, the output shaft 411 of the pitch motor 41 is directly connected to the lens mounting bracket 42 of the first lens assembly 13, with no other transmission components between them. In this way, the pitch motor 41 acts as a power source, directly driving the first lens assembly 13 to move, reducing the need for other transmission components, resulting in fewer parts, a compact overall structure, and lower cost. Simultaneously, it enables the horizontal movement of the reflector 151 and the vertical movement of the first lens 132, effectively increasing the monitoring range of the camera 10.

[0047] Figure 18 As shown Figure 4 The host shown is along the host housing 18. Figure 4 A cross-sectional view along the BB line. Figure 19 As shown Figure 1 An exploded view of the first lens assembly 13 and the main housing 18 in the camera 10 shown. Figure 18 and Figure 19 As shown, the first lens assembly 13 also includes a lens mounting bracket 42 for fixing the first lens 132. The first lens 132 is fixedly mounted on the lens mounting bracket 42. A pitch motor 41 is connected to the lens mounting bracket 42. When the pitch motor 41 rotates, it drives the lens mounting bracket 42 to pitch relative to the front cover 16. Thus, the pitch motor 41 drives the lens mounting bracket 42 to pitch, and the lens mounting bracket 42 drives the first lens 132 to pitch. In this way, the pitch motor 41 directly drives the lens mounting bracket 42, so that the lens mounting bracket 42 and the first lens 132 pitch together, thereby reducing the transmission components between the first lens 132 and the pitch motor 41, resulting in a compact structure and small footprint. In this way, the lens mounting bracket 42 and the first lens 132 are fixed together. During the pitching process, the lens mounting bracket 42 and the first lens 132 remain relatively stationary, which can reduce friction caused by their mutual movement, extend the life of the lens mounting bracket 42 and the first lens 132, and also reduce the space reserved for movement and rotating parts, resulting in a compact and ingenious structure.

[0048] In this configuration, the first lens 132 is located on one side of the reflector assembly 15 in the first direction W, the pitch motor 41 is located behind the reflector assembly 15, and the lens mounting bracket 42 extends from the first lens 132 to the rear of the reflector assembly 15 to connect with the pitch motor 41. This arrangement is more conducive to the pitch motor 41 driving the first lens assembly 132.

[0049] Continue as Figures 16 to 19As shown, the first lens 132 is located on one side of the reflector assembly 15 in the first direction W. The pitch rotation motor 41 is located behind the reflector assembly 15 and includes a motor output shaft 411. The lens mounting bracket 42 extends from the first lens 132 to the rear of the reflector assembly 15 and connects to the motor output shaft 411. Thus, by extending from the first lens 132 to the rear of the reflector assembly 15 and connecting to the motor output shaft 411, the pitch rotation motor 41 drives the vertical movement of the lens mounting bracket 42.

[0050] Figure 20 As shown Figure 18 A magnified view of a portion at point F is shown. Figure 19 and Figure 20 As shown, the pitch motor 41 is located outside the main housing 18, and the lens mounting bracket 42 is at least partially located inside the main housing 18. The camera 10 includes a vertical bearing 44, which rotates vertically along with the lens mounting bracket 42 as the pitch motor 41 rotates, reducing friction during vertical rotation and facilitating the vertical rotation of the lens mounting bracket 42. The vertical bearing 44 is located between the lens mounting bracket 42 and the main housing 18, and the pitch motor 41 drives the lens mounting bracket 42 to rotate relative to the main housing 18 through the vertical bearing 44. Thus, the first lens 132 is fixed on the lens mounting bracket 42 to form the first lens assembly 13. The lens mounting bracket 42 passes through the vertical bearing 44 on the main housing 18 and is connected to the pitch motor 41, which can drive the first lens assembly 13 to achieve vertical movement. Further integration involves fixing the reflector 151 onto the reflector mounting bracket 152 to form a reflector assembly 15. The reflector assembly 15 is supported on the main housing 18 via a horizontal bearing 24 at the top and directly connected to a horizontal rotation motor 21 at the bottom. The horizontal rotation motor 21 can drive the reflector assembly 15 to achieve horizontal movement. This simultaneously achieves the vertical movement of the first lens 132 and the horizontal movement of the reflector 151, which helps to improve the monitoring range of the camera 10.

[0051] The pitch motor 41 has a flattened output shaft 411, and the lens mounting bracket 42 has a flattened mounting hole. The motor output shaft 411 is inserted into the mounting hole, and the flattened structure of the mounting hole matches the flattened structure of the motor output shaft 411. Through this flattened structure, the pitch motor 41 can drive the lens mounting bracket 42 to rotate vertically. Furthermore, the first lens 132 is fixed to the lens mounting bracket 42 to form the first lens assembly 13. The lens mounting bracket 42 passes through the vertical bearing 44 on the main housing 18 and is directly connected to the pitch motor 41 through the flattened structure. With the addition of fastening screws, direct drive transmission between the pitch motor 41 and the first lens assembly 13 is achieved, resulting in high transmission efficiency and a reliable overall structure.

[0052] like Figure 19 As shown, the camera 10 includes a motor mounting bracket 45, which is fixed to the main housing 18. A pitch motor 41 is mounted inside the motor mounting bracket 45 and is connected to the main housing 18 and the lens mounting bracket 42 via its output shaft 411. This facilitates the fixing of the pitch motor 41. (Continuing...) Figure 19 As shown, the main housing 18 is provided with a pivot mounting hole 181. The pivot mounting hole 181 may be, but is not limited to, a circular through hole. The pivot mounting hole 181 mates with the motor output shaft 411. The camera 10 includes a vertical bearing 44. The vertical bearing 44 is located between the lens mounting bracket 42 and the pivot mounting hole 181. Thus, the motor output shaft 411 of the pitch rotation motor 41 passes through the pivot mounting hole 181 and the vertical bearing 44 to install the vertical bearing 44, and facilitates the rotation of the vertical bearing 44 with the motor output shaft 411.

[0053] continue Figure 19 and Figure 20 As shown, a limiting protrusion 1811 protrudes from the inner wall of the pivot mounting hole 181. The limiting protrusion 1811 is used to limit the displacement of the sealing ring 51. The camera 10 includes a sealing ring 51, a sealing pressure plate 52, and a bearing pressure plate 53. The sealing pressure plate 52 is fixed to one end of the pivot mounting hole 181, and the sealing ring 51 is clamped between the sealing pressure plate 52 and one side of the limiting protrusion 1811. The sealing ring 51 is also arranged around the pivot mounting hole 181 and the lens mounting bracket 42. The bearing pressure plate 53 is fixed to the other end of the pivot mounting hole 181, and the vertical bearing is clamped between the bearing pressure plate 53 and the other side of the limiting protrusion 1811. The sealing ring 51 configured in this way can provide good and stable damping force and effectively reduce the amount of shaking when the movement is stopped. Among them, the sealing ring 51 is a skeleton sealing ring 51. The skeleton sealing ring 51 is relatively stationary with respect to the main body housing 18, and the skeleton sealing ring 51 is interference-fitted with the lens mounting bracket 42. Thus, the sealing method of the skeleton sealing ring 51 can provide good and stable damping force, and effectively reduce the amount of shaking when the movement stops. In particular, the skeleton sealing ring has a certain interference fit with the pivot mounting hole 181 of the first lens assembly 13, which provides a more stable damping force.

[0054] continue Figure 19As shown, the camera 10 also includes a vertical photoelectric plate 54 and a vertical photoelectric baffle 55. The vertical photoelectric plate 54 can detect the rotation angle of the first lens 132. The vertical photoelectric plate 54 can limit the displacement of the vertical photoelectric plate 54 in the first direction W. The vertical photoelectric plate 54 is sandwiched between the bearing assembly and the vertical photoelectric baffle 55, and the vertical photoelectric baffle 55 is fixedly connected to the main housing 18. Thus, the vertical photoelectric plate 54 and the vertical photoelectric baffle 55 rotate together with the motor output shaft 411 to detect the rotation angle of the lens mounting bracket 42, and thus detect the rotation angle of the first lens 132. The motor output shaft 411 of the pitch rotation motor 41 corresponding to the vertical photoelectric plate 54 has an initial position. This vertical photoelectric plate 54 is used in conjunction with a photoelectric switch (not shown in the figure) and can rotate at a specific angle. The photoelectric switch rotates at specific rotation angles, such as 15°, 30°, 45°, etc. The photoelectric switch has a transmitter and a receiver. When the vertical photoelectric plate 54 rotates to the corresponding photoelectric switch, it blocks the light emitted from the transmitter to the receiver. This records the position of the motor output shaft 411, thus recording the angle of rotation. (Continue...) Figure 18 and Figure 19 As shown, the camera 10 includes a counterweight assembly 43 for changing the center of gravity of the first lens assembly 13.

[0055] Combination Figure 5 As shown, continue Figure 16 , Figure 18 and Figure 19 As shown, the counterweight assembly 43 includes a first end 433 connected to the pitch rotation motor 41 and a second end 434 opposite to the first end 433. The reflector assembly 15 includes a first side 153 near the first lens 132 and a second side 154 opposite to the first side 153. The second end 434 extends beyond the second side 154 in the first direction W. Thus, the counterweight assembly 43 protrudes from the second side 154, allowing it to be configured on the outside of the main housing 18, which is also more convenient for installation. The counterweight assembly 43 and the first lens 132 are located on opposite sides of the pitch rotation motor 41 in the first direction W. The counterweight assembly 43 is connected to the motor output shaft 411. When the pitch rotation motor 41 rotates, it drives the counterweight assembly 43 to pitch and rotate in the same direction as the first lens 132. Thus, a counterweight assembly 43 is installed on the other side of the first lens assembly 13. The counterweight assembly 43 is also connected to the first lens assembly 13. The counterweight assembly 43 and the first lens 132 are located on opposite sides of the motor output shaft 411, so that the center of gravity of the entire first lens assembly 13 is at the axis supported by the vertical bearing 44, thereby reducing the amount of sway of the first lens 132 and effectively reducing the driving force of the pitch rotation motor 41. Figure 18 and Figure 19As shown, the counterweight assembly 43 includes a counterweight part 431 and a mounting part 432 connected to the counterweight part 431. The mounting part 432 is connected between the motor output shaft 411 and the counterweight part 431. The counterweight part 431 is further away from the motor output shaft 411 in the first direction W than the mounting part 432.

[0056] The lens mounting bracket 42 includes a lens bracket portion 421 for mounting a first lens 132 and a connecting portion 422 connecting the lens bracket portion 421 and the motor output shaft 411. The lens bracket portion 421 is further away from the motor output shaft 411 than the connecting portion 422, and the lens bracket portion 421 is used to mount and support the first lens 132. The connecting portion 422 is used to transmit the force of the motor output shaft 411 of the pitch rotation motor 41, and the lens bracket portion 421 and the connecting portion 422 can be assembled. The lens bracket portion 421 and the connecting portion 422 are integrally formed. The mounting portion 422 and the connecting portion 422 extend in opposite directions from the radially opposite sides of the motor output shaft 411 and along the axial direction of the motor output shaft 411, respectively, and the lens bracket portion 421 extends forward from the connecting portion 422. Thus, the distance from the center of gravity of the aforementioned counterweight assembly 43 to the motor output shaft 411 is proportional to the distance from the center of gravity of the first lens 132 to the motor output shaft 411. The counterweight assembly 43 rotates together with the motor output shaft 411 of the pitch rotation motor 41. Since the first lens 132 is arranged with an eccentric rotation axis, and in this embodiment of the application, the rotation is performed using the motor output shaft 411 as the rotation axis, the required driving force of the pitch rotation motor 41 is too large. Through the counterweight assembly 43, the center of gravity of the first lens assembly 13 is positioned at the vertical bearing support axis, effectively reducing the driving force of the pitch rotation motor 41 and also reducing the amount of lens sway during movement.

[0057] The counterweight 431 comprises a plate-like structure or a block-like structure of a regular shape. This regular shape facilitates the placement of the counterweight 431 and enables stable counterweighting during vertical rotation. For example, the regular shape could be a sphere or a hexahedron. Further examples are omitted here. The counterweight 431 is symmetrical about its vertical position relative to the mounting portion 432. The counterweight 431 extends rearward from the mounting portion 432. The counterweight assembly 43 is located outside the main housing 18. This facilitates the installation of the counterweight 431. The mounting portion 432 is located behind the connecting portion 422. The mounting portion 432 and the connecting portion 422 are radially symmetrical about their vertical position relative to the motor output shaft 411. This facilitates the installation of the counterweight assembly. The counterweight 431 protrudes rearward and forward from the mounting portion 432 and is symmetrical about its front and back relative to the mounting portion 432. This results in a simple counterweight assembly structure, and the symmetrical structure further enhances the counterweighting effect. The lens support portion 421 is symmetrical about the connecting portion 422. This results in a simple structure and easy setup. (Continue...) Figures 18 to 20As shown, the counterweight assembly 43 includes a vertical buffer pad 46 fixedly mounted on the mounting portion 432, which effectively cushions the impact when the product is not powered on and there is no motor drive. Furthermore, when the assembly 43 rotates with the motor output shaft 411, it provides a cushioning effect, reducing damage from mutual compression between components.

[0058] Figure 21 As shown Figure 16 The diagram shows the main housing 18 and the vertical bearing 44. Figure 22 As shown Figure 21 A magnified view of a portion at point H is shown. Figures 20 to 22 As shown, the skeleton sealing ring is pressed into the main housing 18, and the outer sealing plate 52 is installed on the main housing 18 with screws, which serves to prevent the skeleton sealing ring from falling off. On the other side, the vertical bearing 44 is attached to the main housing 18, and the bearing plate 53 is installed on the fixed housing 1 with screws. The bearing plate 53 presses on the vertical bearing 44, which serves to prevent the vertical bearing 6 from falling off and to limit its position.

[0059] Figure 23 As shown Figure 10 A magnified view of a portion of point G is shown. (See diagram below.) Figure 19 and Figure 23 The assembly process of the first lens assembly 13 and the main housing 18 shown is as follows: The mounting shaft of the first lens assembly 13, which is matched with the motor output shaft 411, passes through the inner hole of the vertical bearing 44 on the main housing 18 from one side. On the other side of the main housing 18, the mounting part 432 of the counterweight assembly 43 also passes through the inner hole of the vertical bearing 44. The counterweight assembly 43 and the first lens assembly 13 are installed together with screws to form a vertical rotating part.

[0060] like Figure 19 and Figure 23The assembly process of the vertical photoelectric plate 54 and the vertical photoelectric baffle 55 shown is as follows: The vertical photoelectric plate 54 is installed on the main housing 18, and the vertical photoelectric baffle 55 structure is designed on the counterweight assembly 43. During vertical rotation, the vertical photoelectric baffle 55 can detect the rotation angle of the first lens 132 through a photoelectric switch. The pitch rotation motor 41, which drives the pitch rotation of the first lens assembly 13, is installed on the motor mounting bracket 45 with four screws to form an assembly. Then, the motor output shaft 411 of the pitch rotation motor 41 is inserted into the corresponding mounting hole of the counterweight assembly 43. The motor output shaft 411 of the pitch rotation motor 41 is designed with a flat structure, and the mounting hole of the counterweight assembly 43 is also designed with a flat structure. Through the flat engagement, the pitch rotation motor 41 can drive the counterweight assembly 43 and the first lens assembly 13 to perform vertical rotation. Meanwhile, the output shaft 411 of the pitch motor 41 has a threaded hole, and the corresponding position of the counterweight assembly 43 has a mounting through hole. The output shaft 411 of the pitch motor 41 and the counterweight assembly 43 can be fixed together with screws, eliminating motion angle errors caused by the flat fit clearance. After the pitch motor 41 is installed, the entire vertical transmission part is complete. Based on the above installation process, the reflector assembly 15 is then installed onto the main housing 18. At this point, the entire reflector assembly 15 and the first lens assembly 13 are installed, forming the camera 10 with the reflector assembly 15 and the first lens assembly 13.

[0061] Figure 24 As shown Figure 19 The diagram shows an explosion of the first lens 132 and the lens support. Figure 25 As shown Figure 19 The diagram shows the assembly of the first lens 132 and the lens bracket. Figure 24 As shown, the first lens assembly 13 also includes a decorative cover 135. The decorative cover 135 can cover the first lens 132 portion to protect the first lens 132 and connect the first lens 132 to the lens mounting bracket 42. The decorative cover 135 and the lens mounting bracket 42 are connected, and the first lens 132 is housed between the decorative cover 135 and the lens mounting bracket 42. In this way, the decorative cover 135 protects the first lens 132 and connects the first lens 132 to the lens mounting bracket 42, improving the safety of the first lens 132.

[0062] like Figure 24As shown, the decorative cover 135 may include a first cover body 1351 and a second cover body 1352, with the second cover body 1352 covering the rear end of the first cover body 1351. The first cover body 1351 includes a first opening 1353 for the first lens 132 to receive light, and the second cover body 1352 is provided at the rear end opposite the first opening. The first cover body 1351 is fastened together with the lens mounting bracket 42. Thus, the first lens 132 is mounted to the lens mounting bracket 42 with screws, and the first cover body 1351 and the second cover body 1352 are fastened to the lens mounting bracket 42 by snap-fit, so that the main body of the first lens 132 is not exposed, thereby protecting the overall body of the first lens 132. Figure 25 As shown.

[0063] Figure 26 As shown Figure 1 A schematic diagram of the wiring harness 64 in the camera 10 and the main unit housing 18. Figure 27 As shown Figure 26 The diagram shows an exploded view of the wiring harness 64 and the main unit housing 18. (Combined with...) Figure 2 and Figure 3 As shown, the front cover 16 includes a first cover sidewall 166 and a second cover sidewall 164 opposite each other in a first direction W. The first through hole 161 includes a first hole edge 1611 and a second hole edge 1612 opposite each other in a first direction W. The first hole edge 1611 is closer to the first cover sidewall 166 than the second hole edge 1612, and a first space 165 exists between the first hole edge 1611 and the first cover sidewall 166. This first space 165 provides space for the horizontal rotation of the reflector 151, avoiding interference with the front cover 16. A second space (not shown) exists between the second hole edge 1612 and the second cover sidewall 164. This second space (not shown) provides space for the pitch rotation of the first lens 132, avoiding interference with the front cover 16 and allowing for more flexible pitch control of the first lens 132. The first space 165 is smaller than the second space (not shown).

[0064] like Figure 26 and Figure 27As shown, the first lens assembly 13 includes a lens circuit board 61. The lens circuit board 61 is used to transmit control signals. The first lens 132, the lens mounting bracket 42, and the reflector 151 are respectively housed within the main housing 18. The first lens 132 is positioned relative to the first cover sidewall 166 and close to the second cover sidewall 164, located on the side of the reflector 151 near the edge 1612 of the second hole. The first lens 132 includes a head 1321 and a tail 1322. The head 1321 faces the first cover sidewall 166, and the tail 1322 is located within the second space. The lens circuit board 61 is located at the tail 1322 and has a gap between it and the second cover sidewall 164. The pitch rotation motor 41 is located on the rear side of the main housing 18 opposite to the reflector 151. The lens mounting bracket 42 connects the pitch rotation motor 41 and the first lens 132. The pitch rotation motor 41 drives the first lens 132 to pitch and rotate via the lens mounting bracket 42. There is a wire harness avoidance space 62 between the lens mounting bracket 42 and the side wall of the main housing 18 in the first direction W near the lens circuit board 61. The wire harness avoidance space 62 is a space to prevent the wire harness 64 from interfering with other components, and the wire harness avoidance space 62 is connected to the second space.

[0065] Continue as Figure 26 and Figure 27 As shown, a winding assembly 63 is provided on the outside of the main housing 18. The winding assembly 63 provides a winding support point for the wire harness 64. The winding assembly 63 is offset from the pitch rotation motor 41. The camera 10 includes a main board (not shown in the figure) located outside the main housing 18, and a wire harness 64 electrically connecting the lens circuit board 61 and the main board. The wire harness 64 extends from the lens circuit board 61 through the second space into the wire harness clearance space 62, passes through the wire harness clearance space 62 and exits the main housing 18, and is wound around the winding assembly 63 at least once before connecting to the main board. In this way, the wire harness 64 is fixed by the tail 1322 of the first lens 132, and the wiring layout of the wire harness 64 is adjusted to avoid the impact of the up-and-down swing of the first lens 132 and the lens mounting bracket 42 on the life of the wire harness 64, thereby improving the service life of the wire harness 64. Furthermore, the wiring harness 64 avoids the pitch motor 41, preventing interference and improving its lifespan and safety. The wiring harness 64 can be used as a signal line for transmitting signals or as a power supply line. Optionally, the wiring harness 64 can be an FPC (Flexible Printed Circuit Board) cable, also known as a flexible flat panel cable. The wiring harness 64 is primarily used to transmit high-speed signals such as images. In the camera 10, the wiring harness 64 connects the first lens assembly 13 and the mainboard of the second lens assembly 14. Due to its poor bending and torsional resistance, it is generally used in relatively static connection schemes. Simultaneously, the wiring harness 64 of this application eliminates the need for a coaxial cable, significantly saving costs while increasing its lifespan.

[0066] Figure 28 As shown Figure 27 The diagram shows the wiring harness 64 and the lens mounting bracket 42. Figure 29 As shown Figure 28 A magnified view of a portion at point J is shown. Figure 28 and Figure 29 As shown, the lens mounting bracket 42 includes a bracket back surface 423 facing the wiring harness clearance space 62 in the first direction W. The wiring harness 64 is fixed to the lens mounting bracket 42 here so that this portion of the wiring harness 64 is relatively stationary with respect to the first lens 132. The camera 10 includes a limiting wiring harness seat 65 for restricting the direction of the wiring harness 64. The limiting wiring harness seat 65 restricts the movement of the first wiring harness segment 641. The limiting wiring harness seat 65 is located on the bracket back surface 423. The wiring harness 64 includes a first wiring harness segment 641 and a second wiring harness segment 642 connected to each other. One end of the first wiring harness segment 641 is connected to the lens circuit board 61. The first wiring harness segment 641 is movably limited by the limiting wiring harness seat 65 and moves together with the first lens 132 and the lens mounting bracket 42. The other end of the first wire harness segment 641 is fixed to the back 423 of the bracket and connected to the second wire harness segment 642. The second wire harness segment 642 is wound around the wire assembly 63 at least once. The first wire harness segment 641 moves with the lens mounting bracket 42 in pitch motion, while the second wire harness segment 642 moves in and out of the wire assembly 63. In this way, the limiting wire harness seat 65 provided on the lens mounting bracket 42 restricts the direction of the wire harness 64, allowing the wire harness 64 to fit tightly against the outer wall of the lens mounting bracket 42 and avoiding interference with other components.

[0067] continue Figure 26 and Figure 28 As shown, the second wiring harness segment 642 includes an extension segment 6421 and a winding segment 6422 connected to the extension segment 6421. The extension segment 6421 extends from the first wiring harness segment 641 to the winding assembly 63, which extends horizontally. The winding segment 6422 is spirally wound around the winding assembly 63 in a first direction W, and has a gap between it and the winding assembly 63 in the vertical direction. When the first lens 132 pitches, the winding segment 6422 moves around the winding assembly 63 and moves up and down relative to the winding assembly 63. Thus, when the extension segment 6421 moves together with the first lens 132 and the lens mounting bracket 42, it may be stretched or shortened by the swing. Furthermore, the extension segment 6421 leaves appropriate space to ensure the up and down swing of the first lens 132, while effectively preventing the wiring harness 64 from twisting during movement, thereby improving the service life of the wiring harness 64. Furthermore, the winding segment 6422 is wound around the winding assembly 63, changing the movement of the wire bundle 64 from free swing to spiral motion along the tangential direction of the winding assembly 63. After the winding segment 6422 is wound around the winding assembly 63, it is fixed at the positioning point set at its end to prevent the winding segment 6422 from shifting.

[0068] like Figure 28 and Figure 29 As shown, the limiting wire harness holder 65 includes a wire harness guide hole 651, which is horizontally through. A wire harness 64 passes through the wire harness guide hole 651, and one end 6411 of the wire harness 64 connected to the lens circuit board 61 is located within the height range of the wire harness guide hole 651 in the vertical direction. This end 6411 of the wire harness 64 can be inserted into a corresponding socket on the main board. Thus, the wire harness guide hole 651 allows the wire harness 64 to pass through, which helps to constrain the direction of the wire harness 64 and fix it in place.

[0069] continue Figure 29 As shown, the limiting wire harness holder 65 includes a buckle 652, which includes a buckle connecting part 6521 and a limiting hook 6522 connected to the buckle connecting part 6521. The buckle connecting part 6521 is fixed to the back of the bracket 423, and the limiting hook 6522 is connected to the side of the connecting part away from the back of the bracket 423. The wire harness 64 enters the limiting wire harness holder 65 through the limiting hook 6522. In this way, the wire harness 64 is fixed to the back of the lens mounting bracket 42 on the bracket 423 by the buckle 652, which facilitates the insertion of the wire harness 64 through the limiting hook 6522 and fixes the limiting wire harness holder 65 through the buckle connecting part 6521.

[0070] continue Figure 28 As shown, the limiting harness seat 65 includes a first limiting harness seat 66 and a second limiting harness seat 67. The first limiting harness seat 66 is located at the front end of the lens mounting bracket 42 near the lens circuit board 61, and the second limiting harness seat 67 is located at the rear end of the lens mounting bracket 42. A section of the harness 64 extends from the first limiting harness seat 66 to the second limiting harness seat 67. The first limiting harness seat 66 includes a horizontally penetrating first harness guide hole 651, and the second limiting harness seat 67 includes a horizontally penetrating second harness guide hole 651. The penetrating directions of the first harness guide hole 651 and the second harness guide hole 651 are perpendicular. The harness 64 passes through the first harness guide hole 651 and the second harness guide hole 651 along the corresponding penetrating directions. Thus, by using the first limiting harness seat 66 and the second limiting harness seat 67 to fix the routing direction of the harness 64, the range of motion of the harness 64 is limited as much as possible, so as to avoid interference with other devices during movement, such as preventing the harness 64 from moving relative to the first lens 132 and the lens mounting bracket 42, thereby improving the stability of the harness 64.

[0071] Continue as Figure 28 and Figure 29As shown, the camera 10 includes a fixed wire harness holder 68, which is located on the back of the bracket 423. The fixed wire harness holder 68 is located away from the lens circuit board 61 and close to the winding assembly 63 relative to the limiting wire harness holder 65. One end of the first wire harness segment 641, away from the lens circuit board 61, is fixed to the back of the bracket 423 by the fixed wire harness holder 68. This constrains and fixes the wire harness 64, preventing it from moving. The wire harness 64, after passing through the winding assembly 63, is connected to the main board, and the end of the wire harness 64 located on the winding assembly 63 can also be fixed using the fixed wire harness holder 68.

[0072] The installation process of the first lens and wiring harness described above is as follows: The first lens 132 is fixed to the lens mounting bracket 42 with screws, and the wiring harness is inserted into the corresponding socket of the lens circuit board 61 at the tail 1322 of the first lens 132. The wiring harness routing path is constrained by two wiring harness 64 clips, while avoiding interference with other devices during the movement of the wiring harness driven by the lens. After the wiring harness 64 is inserted into the socket, it first passes through the first wiring harness 64 clip, so that the wiring harness 64 can be close to the lens mounting bracket 42; then, according to the preset routing path, it passes through the first limiting wiring harness seat 66 and the second limiting wiring harness seat 67. The wiring harness between the first limiting wiring harness seat 66 and the second limiting wiring harness seat 67 is kept close to the lens mounting bracket 42, the main purpose of which is to avoid free swing of the wiring harness 64 causing interference with other devices.

[0073] Figure 30 As shown Figure 27 The diagram shows a side view of the wiring harness 64 and the lens mounting bracket 42. Figure 29 and Figure 30 As shown, a first wire harness plug 69 is fixedly provided on the outside of the wire harness 64 to fill the space between the wire harness 64 and the first fixing buckle 681, restricting the movement of the wire harness 64. The wire harness 64 passing through the first wire harness plug 69 also serves to fix the wire harness 64. The fixing wire harness holder 68 includes a first fixing buckle 681 provided on the lens mounting bracket 42. The first fixing buckle 681 holds the first wire harness plug 69, fixing the first wire harness plug 69 relative to the lens mounting bracket 42. In this way, it is convenient to insert the wire harness 64 through the first fixing buckle 681, and the wire harness 64 is fixed on the back 423 of the lens mounting bracket 42 using the first wire harness plug 69.

[0074] In other embodiments, adhesive is used to bond the first fixing clip 681 of the fixing harness 68 and the wire harness 64 together. Thus, a wire harness fixing point is provided near the outer first fixing clip 681, and this fixing point is set as an adhesive point, where the wire harness 64 is fixed by applying adhesive. The purpose of providing the wire harness fixing point is to ensure that the wire harness 64 moves as little as possible within the range of the lens mounting bracket 42. After passing the fixing point with the lens mounting bracket 42, the wire harness 64 is... Figure 30The wire harness 64 is wound around the winding assembly 63 in a manner described above. The wire entry direction of the harness 64 is along the tangential direction of the winding assembly 63. This method transforms the twisting motion of the harness 64 into an up-and-down movement along the tangential direction of the winding assembly 63. The above two embodiments fix the harness 64, and the fixing scheme can be selected according to the actual application. The adhesive can be tape or glue. When tape is used, it can be used for positioning on the harness 64 at the position corresponding to the first fixing clip 681, making installation convenient.

[0075] continue Figure 28 and Figure 30 As shown, the fixed wire harness holder 68 is located below and behind the limiting wire harness holder 65, the winding assembly 63 is located below the fixed wire harness holder 68, and the wire harness 64 extends from the limiting wire harness holder 65, extends obliquely downward to the fixed wire harness holder 68, and then extends downward to the winding assembly 63. Thus, based on the first limiting wire harness holder 66 and the second limiting wire harness holder 67, the routing of the wire harness 64 is constrained, and the stability of the wire harness 64 is improved by the fixed wire harness holder 68. Furthermore, the fixed wire harness holder 68 includes a wire harness plug, whose internal structure is relatively stable, preventing interference during the movement of the wire harness 64 driven by the first lens 132. The winding assembly 63 includes a winding post 631 protruding from the main housing 18. The winding post 631 is spaced apart from the pitch motor 41 and is staggered from both the pitch motor 41 and the first lens 132, located below them. The wire harness 64 includes a winding section 6422 wound around the winding post 631, extending spirally from one end to the other. By designing the wiring of the wire harness 64, its movement is changed from free variation to spiral movement around the winding post 631, limiting the twisting of the wire harness 64 and improving its service life while ensuring the normal movement of the first lens 132.

[0076] In such Figure 28 and Figure 30 In the illustrated embodiment, the winding post 631 extends along a second direction Q perpendicular to the first direction W and is disposed on the rear side of the main housing 18. The two ends of the winding section 6422 are located on the side of the winding post 631 along the first direction W away from the pitch motor 41. The second direction Q can be the first direction W, and is a front-to-back direction. Thus, the winding post 631 occupies space along the second direction Q, facilitating its placement. One end of the winding post 631 is connected to the rear side of the main housing 18. Thus, the axial direction of the winding post 631 is perpendicular to the main housing 18, reducing the space occupied by the winding post 631 within the main housing 18.

[0077] like Figure 30As shown, a wire harness fixing structure 6311 is provided around the circumference of the winding post 631. The end of the winding section 6422 near the main board is fixed to the wire harness fixing structure 6311, and then fixed to the winding post 631 by the wire harness fixing structure 6311. Thus, the wire harness 64 is fixed by the wire harness fixing structure 6311 of the winding post 631. Furthermore, a wire harness fixing structure 6311 is also provided at the end of the winding assembly 63. The fixing scheme of this wire harness fixing structure 6311 is the same as the fixing scheme of the fixed wire harness seat 68; the appropriate fixing scheme is adopted according to actual needs.

[0078] continue Figure 30 As shown, the winding section 6422 is provided with a second wire harness plug 60, and the wire harness fixing structure 6311 includes a second fixing buckle 682, which fixes and holds the second wire harness plug 60. In another embodiment, a fixing point is added to the winding post 631, and the wire harness 64 is wound around the winding post 631 added to the wire harness fixing structure 6311 through the fixing point. The end of the winding post 631 is provided with an adhesive point to fix the wire harness 64, enhance the stability of the wire harness 64, and prevent it from falling off, thus failing to achieve the design purpose of the structure.

[0079] Figure 31 The diagram shown is a schematic representation of another embodiment of the winding post 631 in the camera 10 of this application. In such... Figure 31 In the illustrated embodiment, the winding post 631 extends in the first direction W onto the main housing 18, and the two ends of the winding section 6422 are located on the side of the winding post 631 in the second direction Q away from the pitch motor 41. Thus, the winding sections 6422 of the winding post 631 can all avoid the pitch motor 41, reducing interference between the wire harness 64 and the pitch motor 41. Both ends of the winding post 631 are connected to the rear side of the main housing 18. Thus, the axis of the winding post 631 is parallel to the main housing 18, reducing the space occupied by the camera 10 in the second direction Q and enhancing the stability of the winding post 631 connected to the main housing 18. Since the axis of the winding post 631 is parallel to the direction of the first lens 132, the winding post 631 is fixed to the wire harness fixing structure 6311 by screws, and the wire harness 64, after passing through the wire harness fixing structure 6311, is also wound around the winding post 631. Figure 30 The winding post 631 scheme shown is different in that this direction of winding post 631 can save space, but this scheme is more complicated to install. The setting scheme of winding post 631 can be selected according to actual needs.

[0080] Figure 32 As shown Figure 28 The diagram shows the change in the relative position of the cable harness 64 and the winding post 631 as the lens tail 1322 moves from its highest point to its lowest point. (Combined with...) Figure 26 , Figure 28 and Figure 32 As shown, when the first lens 132 moves in the third direction UR, the wire harness 64 can move up and down along the axis of the winding post 631. Figure 32 The diagram illustrates the change in the relative position of the cable harness 64 and the winding post 631 as the tail portion 1322 of the first lens 132 moves from its highest point to its lowest point. When the tail portion 1322 of the first lens 132 is at its highest point, there is sufficient slack between the cable harness 64 and the winding post 631 to prevent pulling on the cable harness 64. The third direction UR is perpendicular to both the first direction W and the second direction Q, and can be a perpendicular direction.

[0081] Figure 33 As shown Figure 1 Another stereoscopic view of the camera 10 shown illustrates the fill light assembly. (See diagram below.) Figure 33 As shown, the front cover 16 also includes a third through-hole 163. The camera 10 also includes a fill light assembly 71 located within the third through-hole 163, which is configured to avoid the fill light assembly 71, allowing the light from the fill light assembly 71 to illuminate the monitored area. Thus, the fill light assembly 71 is configured to emit light to penetrate the front cover 16 and illuminate the monitored area.

[0082] The fill light assembly 71 is located between the front cover 16 and the main housing 18, and the fill light assembly 71 and the second lens assembly 14 are located on the same side of the reflector 151 in the vertical direction. The horizontal rotation motor is located behind the fill light assembly 71 inside the main housing 18. This arrangement of the fill light assembly 71 on the front cover 16, the horizontal rotation motor behind the fill light assembly 71, and the fill light assembly 71 within the third through hole 163 results in a small footprint and a more compact structure for the camera 10.

[0083] The first through hole 161 is located above the second through hole 162 and the third through hole 163. The second through hole 162 and the third through hole 163 are arranged adjacent to each other, and the area of ​​the first through hole 161 is larger than the area of ​​the second through hole 162. Compared with the related technology where each lens is equipped with a separate supplementary light assembly 71, which is relatively large, the camera 10 in this embodiment has a first lens assembly 13 and a second lens assembly 14 to achieve monitoring and linked capture. The imaging of the first lens assembly 13 uses a reflector 151. In order to ensure that the supplementary lighting of the first lens assembly 13 and the second lens assembly 14 can meet the needs of nighttime, and to keep the device size as small as possible and prevent the supplementary lighting from interfering with each other, the first lens assembly 13 can cover a large field of view through P to achieve linked capture. At the same time, the installation of the first lens assembly 13 and the second lens assembly 14 and the field of view coverage are realized. Furthermore, the first through hole 161 is located above the second through hole 162 and the third through hole 163. The second through hole 162 and the third through hole 163 are arranged adjacent to each other, so that light can be supplied to the second through hole 162 and the first through hole 161 at the same time. In this way, the first lens assembly 13 and the second lens assembly 14 use the same light-filling plate, achieving the solution with the smallest device size and the best light-filling.

[0084] The second through hole 162 and the third through hole 163 are arranged horizontally. In this way, the light from the third through hole 163 can more easily shine into the second through hole 162 to provide supplemental light for the second lens assembly 14, while also shining into the first through hole 161 to provide supplemental light for the first lens assembly 13.

[0085] continue Figure 33 As shown, the second through hole 162 includes a first side 1621 and a second side 1622 opposite to each other in the first direction W, and the third through hole 163 includes a third side 1631 and a fourth side 1632 opposite to each other in the first direction W. The second side 1622 and the third side 1631 are adjacent, and the horizontal distance between the first side 1621 and the fourth side 1632 is less than or equal to the horizontal dimension of the first through hole 161. Thus, the second through hole 162, the third through hole 163, and the first through hole 161 save space and have a compact structure.

[0086] Specifically, the vertical dimension of the first through hole 161 is larger than the vertical dimension of the second through hole 162. The vertical dimension of the first through hole 161 is also larger than the vertical dimension of the third through hole 163. Thus, with the horizontal and vertical motion highly integrated into a single main housing 18, the overall size of the camera 10 is reduced. Combined with this supplementary lighting solution, the overall structure is very compact, with fewer parts and lower cost.

[0087] continue Figure 33As shown, the fill light assembly 71 includes a lamp assembly mounting hole 72 and a lamp assembly mounting surface 73. The lamp assembly mounting hole 72 penetrates the lamp assembly mounting surface 73 to fix the fill light assembly 71 to the front cover 16.

[0088] Figure 34 As shown Figure 33 A magnified view of a portion at point K is shown. Figure 33 and Figure 34 As shown, the fill light assembly 71 includes a first set of fill lights 711, a second set of fill lights 712, and a third set of fill lights 713. The first set of fill lights 711 is used to provide fill light for the second lens assembly 14, the second set of fill lights 712 is used to provide fill light for the zoom extension structure of the first lens assembly 13, and the third set of fill lights 713 is used to provide fill light for the zoom shortening structure of the first lens assembly 13.

[0089] In this configuration, the first set of supplementary lights 711 is closer to the second lens assembly 14 than the second set of supplementary lights 712 and the third set of supplementary lights 713. The first set of supplementary lights 711 provides supplementary lighting to the monitoring area covered by the second lens assembly 14. The second set of supplementary lights 712 and the third set of supplementary lights 713 are closer to the first lens assembly 13 than the first set of supplementary lights 711. The second set of supplementary lights 712 provides supplementary lighting to the monitoring area covered by the first lens assembly 13 at its minimum focal length, and the third set of supplementary lights 713 provides supplementary lighting to the monitoring area covered by the first lens assembly 13 at its maximum focal length. Thus, the field of view of the first lens assembly 13 and the second lens assembly 14 overlaps, achieving optimal supplementary lighting effect while keeping their size as small as possible.

[0090] continue Figure 33 and Figure 34 As shown, the first set of fill lights 711, the second set of fill lights 712, and the third set of fill lights 713 are arranged horizontally in sequence. The first set of fill lights 711 is closer to the second lens assembly 14 in the first direction W compared to the second set of fill lights 712 and the third set of fill lights 713. The first lens assembly 13 includes a first lens 132, which is located above the third set of fill lights 713. Thus, the horizontal arrangement of the first set of fill lights 711, the second set of fill lights 712, and the third set of fill lights 713 achieves a compact device. Furthermore, based on the realization of linked imaging, the first lens assembly 13 and the second lens assembly 14 achieve unified fill light, also achieving a compact structure. A single lens enables fill light from two lenses, achieving interference-free operation.

[0091] continue Figure 34As shown, the first group of supplementary lights 711, the second group of supplementary lights 712, and the third group of supplementary lights 713 each include at least two LEDs. Each group of at least two LEDs includes a first LED 7111 and a second LED 7112, arranged vertically. Multiple first LEDs 7111 and multiple second LEDs 7112 are alternately arranged in each row on the second direction Q of the supplementary light assembly 71. Thus, the alternating and close arrangement of multiple first LEDs 7111 and multiple second LEDs 7112 in each row on the second direction Q of the supplementary light assembly 71, with each LED assisting the others, results in a better supplementary lighting effect.

[0092] The first group of supplementary lights 711, the second group of supplementary lights 712, and the third group of supplementary lights 713 can all be turned on for supplementary lighting, or they can be turned on in groups. The energy of each group of supplementary lights can be controlled according to different distances, i.e., the percentage of supplementary lighting energy is controlled. No specific limitation is made here. The LEDs are tilted downwards towards the rear of the camera 10, thus the LEDs are placed at an angle and arranged closely, occupying a small structural area. Furthermore, each LED is elliptical in shape, with a minor axis of 10mm, a major axis of 11mm, and a spacing of 12mm between each LED. The LEDs are placed at an angle and arranged closely to achieve the supplementary lighting effect. Furthermore, the LEDs are elliptical, with the minor axis horizontal and the major axis vertical. Thus, in the limited space of the second direction Q, the horizontal placement of the minor axis of the LEDs saves as much space as possible in the second direction Q. The diameter of the first LED 7111 is smaller than the diameter of the second LED 7112.

[0093] Figure 35 As shown Figure 1 A schematic diagram of the radar module 80 and front cover 16 in the camera 10 shown. Figure 36 As shown Figure 35 The diagram shows an exploded view of the radar module 80 and the front cover 16. Figure 35 and Figure 36 As shown, camera 10 also includes a radar module 80, which is detachably or fixedly mounted on the bottom of camera 10. This allows for dynamic control of the supplementary lighting via the radar module 80, responding to environmental protection strategies. The radar module 80 refers to radio detection and ranging, that is, using radio methods to detect targets and determine their spatial location. Therefore, the radar module 80 is also called "radio positioning." The radar module 80 is an electronic device that uses electromagnetic waves to detect targets. It emits electromagnetic waves to illuminate the target and receives its echo, thereby obtaining information such as the distance from the target to the electromagnetic wave emission point, the rate of change of distance (radial velocity), azimuth, and altitude. The aforementioned radar module 80 is used in the security field for perimeter security monitoring, security entrances, and checkpoints.

[0094] Figure 37 As shown Figure 36 The diagram shows an exploded view of radar module 80. Figures 35 to 37 As shown, the radar module 80 is mounted below the housing 19. The radar module 80 includes a longitudinally extending radome 83 and a radar plate 84 disposed within the radome 83. The hollow cavity 86 formed by the radome 83 has a dimension in the second direction Q smaller than the dimension in the first direction WQ, which is perpendicular to the second direction Q. The radar plate 84 faces the front of the radome 83. The hollow cavity 86 formed by the radome 83 and the hollow cavity 86 formed by the housing are not shared. Thus, the radar module 80 adopts a modular design, meaning it is assembled separately as a component, rather than being produced on the assembly line on the front cover 16. This effectively improves production efficiency, shortens the assembly line length, reduces production costs, and increases overall assembly efficiency.

[0095] The aforementioned camera 10 is configured to trigger the supplementary light assembly to illuminate and / or trigger the first lens assembly 13 to capture an image when the radar module 80 detects that a monitored object has entered the monitoring area. Thus, the radar module 80 is mounted below the housing 19, and the hollow cavity 86 formed by the radar dome 83 and the hollow cavity 86 formed by the housing are not shared, resulting in a smaller front cover 16 and its decorative parts. This also simplifies the structural design of the front cover 16, reduces mold costs for parts production, lowers the overall cost, and facilitates the layout of other modules on the front cover 16.

[0096] The radar dome 83 is integrally molded. This facilitates casting and also aids in the assembly of the radar dome 83 with the front cover 16. After the radar module 80 detects a monitored object, it triggers the auxiliary light to turn on. The auxiliary light activation employs different supplementary lighting strategies based on the distance between the person and the device to reduce the stimulation of strong light on the eyes and simultaneously achieve an environmentally friendly effect. The monitored object can include, but is not limited to, moving objects. These moving objects include people or vehicles, etc., which will not be listed here. The radar module 80 detecting that a monitored object has entered the monitoring area can mean that the monitored object is detected within a predetermined distance, and the data is actively reported to the microcontroller via the serial port. The microcontroller then sends a command to activate the auxiliary light component. The predetermined distance can be determined based on the ranging function of the radar module 80 itself. The predetermined distance can be greater than 50 meters and less than 200 meters, and is not limited here. For example, the predetermined distance can be 50 meters.

[0097] Combination Figure 2 and Figure 35As shown, the radar module 80 faces the same direction as the second lens assembly 14. Thus, the installation direction of the radar module 80 is no longer the same as before, where it was on the same surface as the second lens assembly 14 on the front cover 16. Instead, it is installed at a 90° angle to the second lens assembly 14, with the radar module 80 extending longitudinally. This reduces the volume of the front cover 16 and its decorative parts, facilitating the layout of other modules on the front cover 16. The reduced volume of the front cover 16 and its decorative parts effectively lowers mold costs, thereby reducing the overall production cost. Simultaneously, the area captured by the second lens assembly 14 can be used as the monitoring area of ​​the radar module 80, enabling the radar module 80 to trigger the fill light assembly to illuminate and / or trigger the first lens assembly 13 to capture an image when it detects an object entering the monitoring area. Continuing with... Figure 2 and Figure 35 As shown, the radar module 80 is positioned in the second direction Q, more biased towards the lower region of the front cover 16, and does not protrude from the front cover 16 in the second direction Q. Thus, the radar module 80 is located at the bottom of the camera 10, more biased towards the region of the front cover 16 in the front-rear direction, which is more conducive to the radar module 80 detecting the forward monitoring area.

[0098] Figure 38 As shown Figure 37 An exploded view of the radar support frame 82 and radar plate 84 shown.

[0099] like Figure 37 and Figure 38 As shown, the radar module 80 includes a radar support frame 82, which is connected to the radar plate 84 and located on the back of the radar plate 84. Thus, the radar support frame 82 supports the radar plate 84, and its location on the back of the radar plate 84 does not affect the transmission of radar waves by the radar plate 84. (Continuing...) Figure 38 As shown, the radar support frame 82 includes a support frame body 821 and a plurality of support protrusions 822 extending from the support frame body 821. The plurality of support protrusions 822 are distributed on the side of the support frame body 821 facing the radar plate 84 and are fixedly connected to the radar plate 84. This arrangement of support protrusions 822 balances the support of the radar plate 84, evens out the gap between the radar support frame 82 and the radar plate 84, and improves the penetration effect of the radar plate 84. The protrusion lengths of the support protrusions 822 are all the same. The support protrusions 822 can be support columns. The number of support protrusions 822 is even, and the support protrusions 822 are symmetrically distributed on the support frame body 821. Each support protrusion 822 has a connecting hole 8221 facing the radar plate 84. Screws 87 pass through through holes 841 in the radar plate 84 and connect to the connecting hole 8221 to fix the radar support frame 82 and the radar plate 84.

[0100] Figure 39 As shown Figure 36 The diagram shows the structure of the bottom wall 191 of the shell.

[0101] like Figure 39 As shown, the only opening 88 of the hollow cavity 86 of the radar module 80 faces the bottom wall 191 of the housing 19, and the front face 801 of the radar module 80 in the second direction Q is configured to transmit radar waves. Both the front face 801 of the radar module 80 and the front cover 16 face the monitoring area in the second direction Q. Thus, the front face 801 of the radar module 80 serves as the radar penetration surface for transmitting radar waves. Since the radar penetration surfaces on the radar plate 84 and the radar cover 83 are in the same direction, the gap between them can be ensured to be uniform. Furthermore, the front face 801 of the radar module 80 directly projects radar waves without a sealing ring. This avoids uneven gaps between the penetration plane of the radar module 80 and the radar plate 84 caused by uneven compression of the sealing ring, which would affect the radar penetration effect, thereby ensuring the radar penetration effect. The front face 801 of the radar module 80 can be parallel to the radar plate 84. Furthermore, the front face 801 of the radar module 80 can be flat, facilitating casting and production.

[0102] Figure 40 As shown Figure 37 The top view of radar module 80 shown.

[0103] like Figure 37 , Figure 39 and Figure 40 As shown, the camera 10 includes a seal 81, which is longitudinally clamped between the bottom wall 191 of the housing 19 and the edge of the opening 88. Thus, with the seal 81 longitudinally clamped between the bottom wall 191 of the housing 19 and the edge of the opening 88, the radar plate 84 is mounted on the radome 83. This prevents the radome 83 from transmitting radar waves through the seal 81, improving the effectiveness of the radar plate 84 passing through the radome 83. The seal 81 can be a sealing ring to improve sealing. During installation, the front cover 16 of the camera 10 is inverted so that the front end face 801 of the radar module 80 in the second direction Q faces upwards, and then the seal 81 is pressed longitudinally between the bottom wall 191 of the housing 19 and the edge of the opening 88. Figure 37 and Figure 39 As shown, the bottom wall 191 of the housing 19 has a downward-facing sealing groove 192. The edge of the opening 88 has an upward-facing sealing rib 881, and the sealing element 81 is held in the sealing groove 192 and the sealing rib 881. In this way, the sealing groove 192 and the sealing rib 881 can improve the sealing reliability.

[0104] Figure 41 As shown Figure 40 The diagram shows a cross-sectional view of radar module 80 along line TT. Figure 40 and Figure 41 As shown, the radar module 80 includes a cavity wall 89 located within the radar dome 83. The cavity wall 89 includes an opening 88, and the cavity wall 89 is sealed to the housing 19 via a sealing element 81, forming a sealed cavity 91. The radar plate 84 is installed within this sealed cavity 91, ensuring its sealing effect and preventing water ingress that could affect its sealing function. Furthermore, the sealed cavity 91 is located below the front cover 16 and is sealed by press-fitting the sealing element 81, achieving a good sealing effect. The sealed cavity 91 is also fully connected to the camera 10 via the front cover 16, further enhancing its sealing performance. The radar plate 84 and the front sidewall of the cavity wall 89 are parallel. This facilitates the transmission of radar waves by the radar plate 84.

[0105] Continue as Figure 40 and Figure 41 As shown, the radar plate 84 is located within the sealed cavity 91, and the bottom wall 191 of the housing 19 covers the radar dome 83. A non-sealed cavity 92 is formed between the radar dome 83 and the cavity wall 89. A drainage groove 93 is provided inside the radar dome 83. Thus, a drainage groove 93 for the radar module 80 is designed below the non-sealed cavity 92 of the radar dome 83, preventing water accumulation through the drainage holes. Specifically, the left side wall of the radar dome 83 extends obliquely downwards towards the cavity wall 89, and the drainage groove 93 is located on the left side wall, extending downwards along the left side wall to the bottom wall 191 of the radar dome 83, penetrating the bottom wall 191. The right side wall of the radar dome 83 extends obliquely downwards towards the cavity wall 89, and the drainage groove 93 is located on the right side wall, extending downwards along the right side wall to the bottom wall 191 of the radar dome 83, penetrating the bottom wall 191. This facilitates the flow of water accumulated from the shell 19 down the left and / or right walls of the drainage channel 93.

[0106] Continue as Figure 37 and Figure 40 As shown, the radome 83 has an upper opening at its top, located within the opening 88. The radome 83 is equipped with a positioning structure 96, located outside the seal 81 and connected to the bottom wall 191 of the housing 19. This facilitates the alignment and assembly of the radome 83 with the bottom wall 191 of the housing 19. Continuing as... Figure 37 and Figure 40 As shown, the cavity wall 89 is located at the center of the radome 83 in the second direction Q. The positioning structure 96 includes positioning posts 961. The positioning posts 961 protrude from the upper edges of both sides of the radome 83 in the second direction Q and are positioned and engaged with the housing 19. Thus, the radome 83 is aligned with the positioning groove 193 of the bottom wall 191 of the housing 19 through the positioning post 961 for assembly. This positioning post 961 may include multiple positioning posts 961, which will not be described in detail here.

[0107] Figure 42 As shown Figure 37 The diagram shows an exploded view of the radar plate 84 and the radar dome 83. Figure 43 As shown Figure 36 The diagram shows an explosion of the radar dome 83 and the shell 19.

[0108] like Figure 40 , Figure 42 and Figure 43 As shown, the positioning structure 96 includes a longitudinally extending rib 97 protruding from the inner wall of the radome 83. The rib 97 includes a first rib 971 protruding from the front sidewall of the radome 83, and a second rib 972 located between the middle of the rear sidewall of the radome 83 and the middle of the rear sidewall of the cavity wall 89. The first rib 971 is located on the left and / or right side of the cavity wall 89, connected to the outer sidewall of the cavity wall 89, and extends longitudinally along the outer sidewall of the cavity wall 89. The second rib 972 protrudes from the rear sidewall of the radome 83 into the cavity wall 89. A threaded hole is provided within the rib 97, penetrating the bottom wall 191 of the radome 83. The camera 10 includes a fixing member 98 for fixing the radome 83 to the housing 19. The fixing member 98 passes upward from the bottom wall 191 of the radome 83 through the threaded hole and is fixedly connected to the housing 19. This improves the sealing between the cavity wall 89 inside the radome 83 and the bottom wall 191 of the housing 19. The fixing member 98 may include multiple fixing members 98. The fixing member 98 can be a fixing post. The fixing member 98 can also be a screw. Examples are not provided here.

[0109] Continue as Figure 39 As shown, a wiring hole 194 is provided on the bottom wall 191 of the housing 19. The wiring hole 194 is located above the opening 88 and communicates with the sealed cavity 91. The camera 10 includes a radar connection cable (not shown) connected to the radar board 84. The radar connection cable (not shown) may include a power line and a control signal line. The radar connection cable (not shown) passes through the sealed cavity 91, through the wiring hole 194, and enters the hollow cavity 86 of the housing 19. In this way, the radar connection cable (not shown) can be mounted on the front cover 16 of the camera 10 via the radar module 80. Signals are transmitted through the radar connection cable to control the radar module 80.

[0110] like Figure 42 As shown, the radar plate 84 is mounted on the radar plate support frame 82 by four screws 87, and one end of the radar connection cable (not shown in the figure) is inserted into the base of the radar plate 84. This part is then mounted downwards on the bottom surface of the hollow cavity 86 of the radar dome 83 by two screws 94 and two positioning holes 95, so that the radar plate 84 faces the front end face 801 of the radar module 80 in the second direction Q, ensuring a uniform gap between the radar plate 84 and the radar dome 83. Continuing as... Figure 42As shown, during the installation of the aforementioned fastener 98, before installing the radar module 80 onto the front cover 16 of the camera 10, the radar connection cable (not shown in the figure) needs to be passed through the cable hole 194 below the front cover 16 of the camera 10. The radar cover 83 is designed with positioning posts 961 and protruding ribs 97. These structural features allow the radar module 80 to be pre-installed onto the front cover 16 of the camera 10 smoothly. Finally, the radar module 80 is installed and fixed onto the front cover 16 of the camera 10 using three screws.

[0111] Figure 44 As shown Figure 43 The diagram shows the radome 83 and the housing 19.

[0112] like Figure 44 As shown, by plugging the three rubber plugs 99 onto the fixing part 98 of the radar module 80 to prevent the fixing part 98 from being exposed and affecting the appearance, the radar module 80 of the camera 10 is now installed. The installation of other modules of the camera 10 can then be carried out, which will not be described separately here.

[0113] Figure 45 As shown Figure 1 The diagram shows a top view of the first lens assembly 13 and the second lens assembly 14. Figure 46 As shown Figure 1 The diagram shows a frontal view of the first lens assembly 13 and the second lens assembly 14.

[0114] like Figure 45 and Figure 46 As shown, the camera 10 may also include an image sensor connected to the motherboard, a shared image processor for the first lens assembly 13 and the second lens assembly 14, a storage unit, and an image output interface. The image sensor is used to convert the light image on the photosensitive surface into an electrical signal proportional to the light image using the photoelectric conversion function of the photoelectric device. The shared image processor converts and synthesizes the video images of the first lens assembly 13 and the second lens assembly 14, respectively. The storage unit is used to store the images.

[0115] Figure 47 As shown Figure 1 The diagram shows a horizontally rotating mirror assembly. Figure 48 As shown Figure 1 The diagram shows the pitch rotation of the first lens assembly 13.

[0116] like Figure 47 and Figure 48As shown, after light enters the first viewing window 1613 of the camera perpendicularly, it passes through the reflector 151 and the first lens 132, and when it illuminates the center of the image sensor (Complementary Metal-Oxide-Semiconductor, CMOS), this is the zero coordinate of the gimbal. That is, P=0, T=0. The downward rotation of the optical axis of the first lens 132 is the positive direction; in the top view, the rightward rotation of the reflector 151 is the positive direction. When movement is required, the horizontal rotation angle of the image is twice the actual rotation angle of the reflector 151, and the rotation range is half of the horizontal field of view. The vertical rotation angle of the image is the angle of rotation of the rotating mechanism, and the range is the vertical field of view of the panoramic path. During the rotation, the center of the detail path image is always within the field of view of the panoramic path. Continuing as... Figure 48 As shown, when the first lens 132 rotates from its maximum pitch angle d to its minimum pitch angle c, and the reflector 151 remains stationary, the trajectory of the intersection point of the optical axis of the first lens 132 and the pitch of the reflector 151 deviates from the center of the reflecting surface of the reflector 151. The line connecting the point where the optical axis of the first lens 132 intersects the reflector 151 at the maximum pitch angle d and the point where the optical axis of the first lens 132 intersects the reflector 151 at the minimum pitch angle c divides the reflector 151 into a first region 1513 and a second region 1514, wherein the area of ​​the first region 1513 is larger than the area of ​​the second region 1514. Thus, the first region 1513 is more conducive to light incidence.

[0117] Figure 49 As shown Figure 1 The image shown is an enlarged view of a picture taken by the second lens assembly.

[0118] like Figure 49 As shown, the camera 10 is configured to determine a horizontal rotation angle and a pitch rotation angle in response to detecting the world coordinates of at least one subject, so that the subject is located in the center area of ​​the image captured by the camera 10 at the horizontal and pitch rotation angles. Thus, compared to the spherical camera 10 in related technologies, which, due to its large size, rotates relatively slowly and may miss the target during rotation, and also causes overall camera 10 shaking, resulting in blurred images, the reflector assembly and the first lens assembly 13 in this embodiment, located on the light path from the monitoring area to the first lens assembly 13, are smaller than the entire camera 10, resulting in less overall camera 10 shaking due to rotation and higher image clarity.

[0119] continue Figure 49As shown, using an input device such as a mouse, a rectangular box is drawn in the video image on the monitor as a bounding box of interest (BOI), thus determining the center coordinates (Xr, Yr) of the bounding box, which serve as the coordinates of the target of interest. The size of the BPI is determined to be the longer of Wr and Hr. Assuming the current focal length is f and the vertical resolution is H, the focal length f of the target after magnification of the BPI can be estimated. r for:

[0120]

[0121] Then the device's pan / tilt head will rotate camera 10 until the center of the image coincides with the center of interest. Simultaneously, camera 10 will zoom until the diagonal field of view matches the field of interest. If the frame length was not extended during drawing (i.e., the interest frame is a single point), and Wr is 0, the pan / tilt head will rotate, but camera 10 will not zoom. If Wr > 0, but f... r If the focal length is less than the maximum magnification of the device, then magnify it to the maximum magnification.

[0122] Figure 50 As shown Figure 1 A schematic diagram showing the horizontal rotation angle and pitch rotation angle of the camera 10.

[0123] like Figure 50 As shown, camera 10 is configured to: convert world coordinates to spherical coordinates; and determine the horizontal rotation angle ∠P and the pitch rotation angle ∠T based on the spherical coordinates. The horizontal rotation angle is the absolute value of the inverse tangent function of the ratio of the horizontal to the vertical axis in the world coordinate system. The pitch rotation angle is the absolute value of the arcsine function of the vertical axis in the world coordinate system. Where P (pan, the horizontal rotation angle) and T (tile, the vertical rotation angle) are respectively. The detailed calculation process for the horizontal rotation angle ∠P and the pitch rotation angle ∠T is as follows. (Continued) Figure 50 As shown, the parameters of camera 10 include intrinsic and extrinsic parameters. Intrinsic parameters include distortion parameters and an intrinsic parameter matrix, representing the inherent properties of camera 10, which cannot be changed externally. Only the zoom camera 10 changes its parameters when zooming.

[0124]

[0125] Among them, M int The intrinsic parameters are: f, the current focal length in millimeters; dx and dy, the CMOS pixel width and height in millimeters; and w and h, the image horizontal resolution in pixels. The extrinsic parameters are a matrix containing displacement [T] and pose [R], which is commonly referred to as position and orientation.

[0126] Assuming the displacement T is 0 and the rotation order is X, Y, Z, then the extrinsic parameter matrix M ext for:

[0127]

[0128]

[0129]

[0130]

[0131] The extrinsic parameters of the aforementioned camera 10 are generated as follows: In model building, a Cartesian coordinate system is used by default, with the CMOS center of camera 10 set to point O. When only the x and y dimensions are present, the image is considered to be on the plane Z=1. The PTZ camera uses a coordinate system with the negative Y-axis at position 0, so it must be rotated to the negative Y-axis direction during initialization.

[0132] Therefore, the extrinsic parameter matrix is ​​initialized as follows:

[0133]

[0134] After initialization, based on the current camera's PT value, the system rotates around the X and Z axes respectively, generating a set of extrinsic parameter matrices M. ext for:

[0135]

[0136] The coordinate transformation described above is as follows: After obtaining the intrinsic parameters, distortion parameters, and extrinsic parameters, the coordinate transformation can be performed. The PT coordinate process for the image coordinate to sphere conversion machine is as follows:

[0137] PT to 3D (world coordinates):

[0138]

[0139] 3D to 2D:

[0140] P uv =M int ·M ext ·P 3Dn

[0141] 2D to 3D:

[0142]

[0143]

[0144]

[0145] 3D to PT coordinates:

[0146]

[0147] In this way, precise conversion between the target image captured by the second lens assembly 14 and the center of the first lens assembly 13 can be achieved. Through the movement of the reflector 151 and the camera 10 within the device, the first lens assembly 13 can move within the field of view of the second lens assembly 14, enabling rapid image capture with minimal shaking during the movement, ensuring a clear captured image.

[0148] Figure 51 As shown Figure 1 The diagram shows the linkage between the first lens assembly 13 and the second lens assembly.

[0149] Combination Figure 7 and Figure 5 and Figure 51 As shown, the main housing 18 includes a first housing sidewall 183 and a second housing sidewall 184 facing each other in a first direction W. A front cover 16, covering the front of the main housing 18, includes a rectangular first through-hole 161, wherein a first longitudinally extending side of the first through-hole 161 is close to the first housing sidewall 183 relative to the second housing sidewall 184 and is a first distance away from the first housing sidewall 183, and a second longitudinally extending side of the first through-hole 161 is a second distance away from the second housing sidewall 184, wherein the first distance is less than the second distance; a first lens assembly 13 is disposed within the main housing 18 in a region close to the second housing sidewall 184. The camera 10 is configured such that, when the reflector 151 rotates from a first horizontal boundary position to a second horizontal boundary position while the first lens 132 remains stationary, the trajectory 22 of the intersection point of the optical axis of the first lens 132 and the horizontal intersection point of the reflector 151 deviates from the center 1512 of the reflecting surface. When the first lens 132 rotates from the first pitch boundary position 133 to the second pitch boundary position 134 while the reflector 151 remains stationary, the trajectory of the intersection point of the optical axis of the first lens 132 and the pitch of the reflector 151 deviates from the center of the reflecting surface. Thus, the horizontal intersection point trajectory 22 of the optical axis of the first lens 132 and the reflector 151 is not collinear with the center 1512 of the reflecting surface of the reflector 151, achieving horizontal rotation of the reflector 151 and pitch rotation of the first lens 132 to capture images of the monitored area. Furthermore, it also enables the linkage between the first lens assembly 13 and the second lens assembly 14 and the miniaturization of the camera. In this embodiment, the horizontal rotation of the reflector 151 is set, with a small range and rapid rotation. The shaft of the horizontal rotation motor extends vertically, while the shaft of the pitch rotation motor 41 extends horizontally; the central axis of the horizontal rotation motor shaft and the central axis of the pitch rotation motor 41 shaft are not coplanar.

[0150] Figure 52 As shown Figure 51 A schematic diagram of the image partitioning of the second lens assembly 14 shown.

[0151] like Figure 51 andFigure 52 As shown, the second lens assembly 14 includes a second lens 142, which includes a second lens element (not shown) and a second image sensor (not shown). The camera 10 is configured to: in response to an object captured by the second lens 142, determine a first control command for adjusting the horizontal angle of the reflector 151 and / or a second control command for adjusting the pitch angle of the first lens 132, based on a mapping matrix between the second lens 142 and the first lens 132. Accordingly, in response to the first control command, a horizontal rotation structure performs a horizontal angle adjustment, causing the reflector 151 to adjust its horizontal angle; and / or, in response to the second control command, a pitch drive structure performs a pitch angle adjustment, causing the first lens 132 to adjust its pitch angle, so that when the camera 10 is in the P and T coordinates, the object is in a preset position in the image captured by the first lens 132. Thus, the first lens 132 and the second lens 142 are linked to adjust the horizontal and pitch angles of the camera 10.

[0152] The second lens assembly 14 is located below the reflector 151, and its field of view covers that of the first lens assembly 13. The camera 10 is configured such that the horizontal angle of the reflector 151 is the value of the inverse tangent function of the P-axis, and the pitch angle is the value of the inverse tangent function of the T-axis. In this way, the horizontal and pitch angles can be obtained and calculated in real time.

[0153] Continue as Figure 51 As shown, the linkage between the second lens assembly 14 and the first lens assembly 13 includes two types: forward and reverse. Forward linkage: At any point M in the image of the second lens assembly 14, a set of PT values ​​for the first lens assembly 13 can be found. The PT value is the sum of the P and T values. When the first lens assembly 13 moves to this PT coordinate, the image center N coincides with point M. Reverse linkage: At any PT, the center point N of the first lens assembly 13 can find a point M in the image of the second lens assembly 14 that coincides with it. The PT coordinate is also the sum of the P and T coordinates.

[0154] like Figure 52As shown, camera 10 is configured to: acquire an image containing an object using a second lens assembly 14; determine the position of the object in the image; and, in response to a mapping matrix between the second lens assembly 14 and the first lens assembly 13, determine, based on the position, a P-coordinate for driving the reflector 151 and a T-coordinate for driving the first lens 132, such that when camera 10 is at the P-coordinate and T-coordinate, the object is confined to a preset area within the image captured by the first lens assembly 13. The horizontal angle of the reflector 151 is adjusted based on the P-coordinate, and the pitch angle of the first lens 132 is adjusted based on the T-coordinate. Furthermore, the second lens assembly 14 is located below the reflector 151, and the field of view of the second lens assembly 14 overlaps the field of view of the first lens assembly 13. Camera 10 is configured to respond to a mapping matrix corresponding to a preset region; the preset region is one of a plurality of horizontal regions, which are obtained by horizontally dividing the image captured by the first lens assembly 13 according to the parallax between the second lens assembly 14 and the first lens assembly 13, and the larger the parallax between the second lens assembly 14 and the first lens assembly 13, the smaller the corresponding preset region. The mapping matrix is ​​determined based on the positions of at least 4 points on the boundary line of each of the plurality of horizontal regions, and the positions of the alignment points when the second lens 142 is aligned with at least 4 points; the at least 4 points are divided into at least two columns, with two points in each column; the P coordinates and T coordinates are determined according to the corresponding mapping matrix and positions.

[0155] like Figure 52 As shown, a virtual plane is created for the first lens assembly 13. When the PT of the camera 10 is (0, 0), the optical center is perpendicular to the plane, and the distance between the plane and the camera 10 is L. Then, for each set of PT values, the coordinates of the image center aligned with the virtual plane are (X... G Y G ), X G =TanP,Y G =TanT. Camera 10 primarily monitors the ground, so it's typically installed at a downward angle. Since the second lens assembly 14 is directly below the reflector 151, it can be considered horizontal, and the second lens assembly 14 and the first lens assembly 13 will not deviate due to displacement. However, vertical deviation cannot be ignored. The closer the object distance, the greater the parallax produced by the two cameras 10. To address this issue, a layered strategy for the panoramic image is adopted: the panoramic image is divided into n preset regions from top to bottom, with the first and last rows having vertical coordinates Y0 and Yn respectively, and dividing lines Y1, Y2, ..., Yn-1 added. Each dividing line halves one of the preset regions below it.

[0156] During the calibration process, arbitrarily select one point on each horizontal line, taking one point from the left and one from the right, resulting in a total of 2n+2 points. These points serve as calibration points. Adjust the pan-tilt coordinates PT of the first lens assembly 13 so that the image center of the camera 10 is aligned with each of the 2n+2 points in the second lens assembly 14. For example... Figure 52 As shown, there can be four preset regions. The coordinates of four points on the edge of each preset region in the image plane R of the second lens assembly 14 are defined, such as point A (X... RA Y RA ), and the virtual coordinates of four points on the corresponding virtual plane G, such as point A (X GA Y GA The four pairs of points can form a mapping relationship as shown in Table 1.

[0157] Table 1 shows the mapping relationship that can be formed by four sets of point pairs.

[0158] Points Pixel coordinates in the image Coordinates in a virtual plane A <![CDATA[(X RA ,AND RA )]]> <![CDATA[(X GA ,AND GA )]]> B (XRB,YRB) (XGB,YGB) C (XRC,YRC) (XGC,YGC) D <![CDATA[(X RD ,AND RD )]]> <![CDATA[(X GD ,AND GD )]]>

[0159] There exists a relation G = H × R, where H is the homography matrix from R to G of camera 10. The homography matrix has a size of 3 rows and 3 columns. Therefore, the relation is:

[0160]

[0161] By substituting the corresponding points of the four sets of coordinate pairs (as shown in Table 1) into the relational formula, the parameters in the homography matrix H can be solved. This yields the mapping relationship between the second lens component 14 and the virtual plane within the preset region A. The preset regions 1 to n correspond to matrices H1 to Hn.

[0162] The homography matrix is ​​a 3×3 matrix with 9 parameters. The specific parameters of the homography matrix H are as follows:

[0163]

[0164] However, the coordinates used in this embodiment are homogeneous coordinates, which have scale invariance, and in practice only 8 parameters need to be solved. For example, given a pair of points (u1, v1) and (u2, v2), a homogeneous relationship exists: and

[0165] First, list the homography transformation formula:

[0166]

[0167] The proposal of homography matrix h 33 As a factor, it is imported into the homogeneous matrix of the points.

[0168]

[0169] The relationship between the two coordinates can be expanded as follows:

[0170]

[0171] Let h in the above equation 33 Canceling the variables and simplifying, we get:

[0172]

[0173] Substituting (u1, v1) into (u2, v2) yields:

[0174]

[0175] One set of coordinate pairs can yield two equations, and four sets can yield eight equations. This allows us to solve for eight unknowns. In practical use, first, based on the Y coordinate of the second lens component 14R, we find the area and its corresponding matrix H. Then, substituting the point coordinates in the camera into G = H × R, we can obtain the virtual coordinates (X...). G Y G ), and then we can find ∠P=ATan(X G ) and ∠T=ATan(Y G In this way, the first lens assembly 13 completes the snapshot by rotating vertically and horizontally.

[0176] For example: in the second lens assembly 14, the resolution is 1920×1080, and a point (x) within the second partition of the image... r y r That is, H = H2. The virtual coordinate x is obtained using the following formula. g and y g :

[0177]

[0178]

[0179]

[0180] The above are merely preferred embodiments of this specification and are not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification shall be included within the scope of protection of this specification.

[0181] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Without further limitations, an element qualified by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

Claims

1. A video camera characterized by comprising: The camera comprises: a main housing comprising first and second housing side walls opposite in left-right direction; a front cover covering a front side of the main housing, comprising a first through hole in rectangular shape, wherein a first side of the first through hole extending in longitudinal direction is closer to the first housing side wall than to the second housing side wall by a first distance, and a second side of the first through hole extending in longitudinal direction is away from the second housing side wall by a second distance, wherein the first distance is smaller than the second distance; a first lens assembly disposed in a region of the main housing close to the second housing side wall, comprising a tilt rotation motor, a lens mounting bracket and a first lens, the first lens comprising a first lens element and a first image sensor, the first image sensor sensing light rays entering the first lens element through the first through hole; a mirror assembly disposed in a region of the main housing close to the first housing side wall, located on a light path of the light rays entering the first lens, comprising a horizontal rotation motor, a mirror mounting bracket and a mirror fixed to the mirror mounting bracket, the mirror being in rectangular shape with upper and lower edges extending horizontally, the mirror mounting bracket comprising a motor connecting end and a rotatable end; wherein the first lens element faces a reflecting surface of the mirror; the mirror comprises a first horizontal boundary position and a second horizontal boundary position, and the mirror rotates horizontally between the first horizontal boundary position and the second horizontal boundary position; the first lens comprises a first tilt boundary position and a second tilt boundary position, and the first lens rotates between the first tilt boundary position and the second tilt boundary position; wherein the camera is configured to: when the mirror rotates from the first horizontal boundary position to the second horizontal boundary position while the first lens remains stationary, an optical axis of the first lens deviates from a horizontal intersection locus of the mirror with respect to a center of the reflecting surface; when the first lens rotates from the first tilt boundary position to the second tilt boundary position while the mirror remains stationary, an optical axis of the first lens deviates from a tilt intersection locus of the mirror with respect to the center of the reflecting surface; a horizontal photoelectric plate and a horizontal photoelectric baffle, the horizontal photoelectric plate being clamped between the rotatable end and the horizontal photoelectric baffle, capable of detecting an angle of rotation of the mirror mounting bracket, and the horizontal photoelectric baffle being fixedly connected with the rotatable end, capable of limiting displacement of the horizontal photoelectric plate in longitudinal direction; a vertical bearing disposed between the lens mounting bracket and the main housing, the tilt rotation motor driving the lens mounting bracket to rotate relative to the main housing through the vertical bearing; a vertical photoelectric plate and a vertical photoelectric baffle, the vertical photoelectric plate being capable of detecting an angle of rotation of the first lens, and the vertical photoelectric baffle being capable of limiting displacement of the vertical photoelectric plate in left-right direction, the vertical photoelectric plate being clamped between the vertical bearing and the vertical photoelectric baffle, and the vertical photoelectric baffle being fixedly connected with the main housing.

2. The camera of claim 1, wherein, The horizontal intersection trajectory is not collinear with the center of the reflecting surface, and the pitch intersection trajectory is not collinear with the center of the reflecting surface.

3. The camera of claim 2, wherein, The rotation shaft of the horizontal rotation motor extends vertically, and the rotation shaft of the pitch rotation motor extends horizontally. The central axis of the rotation shaft of the horizontal rotation motor is not coplanar with the central axis of the rotation shaft of the pitch rotation motor.

4. The camera of claim 3, wherein, The front cover further comprises a second through hole located below the first through hole, and the camera comprises a second lens assembly arranged in the second through hole, and the area of the second through hole is smaller than the area of the first through hole.

5. The camera of claim 4, wherein, The field of view of the second lens assembly is larger than the field of view of the first lens assembly.

6. The camera of claim 4, wherein, The second lens assembly comprises a second lens, and the second lens comprises a second lens element and a second image sensor. The camera is configured to: determine a first control instruction for adjusting the horizontal angle of the mirror and / or a second control instruction for adjusting the pitch angle of the first lens based on a mapping matrix between the second lens and the first lens in response to an object photographed by the second lens; Correspondingly, in response to the first control instruction, the horizontal rotation motor executes the horizontal angle, so that the mirror adjusts the horizontal angle; and / or, in response to the second control instruction, the pitch rotation motor executes the pitch angle, so that the first lens adjusts the pitch angle, so that the object is in a preset position of an image photographed by the first lens when the camera is in the P coordinate and the T coordinate.

7. The camera of claim 6, wherein, The second lens assembly is located below the mirror, and the field of view range of the second lens assembly covers the field of view range of the first lens assembly. The camera is configured to: The horizontal angle of the mirror is the value of the inverse tangent function of the P coordinate; The pitch angle is the value of the inverse tangent function of the T coordinate.

8. The camera of claim 1, wherein, The horizontal rotation motor and the pitch rotation motor are direct drive motors.

9. The camera of claim 1, wherein, The camera comprises a shell comprising a shell body and the front cover, the front cover covers the front side of the shell body, the main shell is accommodated in the shell, and the first lens and the mirror are accommodated in the main shell. The mirror assembly comprises a mirror mounting frame, the mirror is fixed to the mirror mounting frame, the mirror mounting frame comprises a motor connecting end and a rotatable end, the motor connecting end and the rotatable end are arranged on the upper and lower sides of the mirror, the motor connecting end is connected with the horizontal rotation motor, and the rotatable end is rotatably connected with the main shell. The motor connecting end comprises a mounting hole, and a first flat structure is arranged on the inner wall of the mounting hole along the hole axis direction, the horizontal rotation motor comprises a motor shaft, and a second flat structure is arranged on the outer wall of the motor shaft along the axial direction of the motor shaft, the motor shaft is inserted into the mounting hole, and the first flat structure and the second flat structure are limited in position.

10. The camera of claim 9, wherein, The motor shaft is provided with a threaded hole extending along the radial direction of the motor shaft, and the motor connecting end is provided with a mounting through hole extending along the radial direction of the motor connecting end, and the mounting through hole penetrates the mounting hole; The camera comprises a fixing member penetrating the threaded hole and the mounting through hole respectively, and fixing the motor shaft and the motor connecting end in the horizontal direction.

Images