Dome camera

Abstract

The invention provides a dome camera. The dome camera comprises a housing; a hemispherical transparent cover; the horizontal rotating bracket can horizontally rotate around a first central shaft relative to the hemispherical transparent cover; the lens assembly is rotatably arranged on the horizontal rotating bracket around a second central shaft extending along the horizontal direction so as to adjust the direction of a second optical axis in a pitching manner; the lens assembly comprises: a lens housing axially extending along a second optical axis direction; the lens is arranged in the lens shell, and the front end of the lens is exposed out of a lens hole in the front end of the lens shell; the light supplementing lamp is arranged on the lens shell, and emergent light of the light supplementing lamp is used for illuminating an image area of the lens; the shading assembly is arranged on the lens shell and located between the lens and the light supplementing lamp in the radial direction of the lens shell, the shading assembly comprises a driving part, and the driving part outputs driving force for changing the gap between the front end of the shading assembly and the hemispherical transparent cover in the second optical axis direction.

Description

Technical Field

[0001] The present invention relates to the field of camera devices, and particularly to a dome camera. Background Art

[0002] At present, some dome products on the market, in order to realize the adjustment of the camera shooting angle, add an external electric rotating mechanism. This technical solution has a high on-site installation cost and affects the overall appearance of the machine.

[0003] Some dome products on the market now can achieve multi-directional adjustment, but lack fill lights, resulting in a decline in image quality. Some products have designed fill lights, but in order to avoid the reflection of the fill lights on the transparent cover affecting the image quality, a transparent cover with a higher cost is used, and the horizontal rotation can be forcibly rotated by hand, lacking safety. Neither of the two technical solutions can perfectly meet the user's requirements for the image quality and angle adjustment of dome products. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a dome camera. The lens assembly and the rotating bracket for driving the lens assembly to rotate are all installed inside the hemispherical transparent cover, and include a fill light for the lens assembly and a light-shielding component isolated between the fill light and the lens, which can not only meet the angle adjustment requirements of the camera product, but also improve the image quality of the dome camera.

[0005] An embodiment of the present invention provides a dome camera, including: A housing, the housing defining a first central axis extending along a vertical direction; A hemispherical transparent cover, the hemispherical transparent cover being fixed to the housing and protruding from the lower surface of the housing; A horizontal rotation bracket, the horizontal rotation bracket being rotatably installed in the housing around the first central axis to horizontally rotate around the first central axis relative to the hemispherical transparent cover; A lens assembly, the lens assembly having a second optical axis direction, the lens assembly being rotatably installed in the horizontal rotation bracket around a second central axis extending along a horizontal direction to pitch-adjust the second optical axis direction; The lens assembly includes: A lens housing, the lens housing axially extending along the second optical axis direction; A lens, the lens being installed in the lens housing and the front end being exposed through a lens hole at the front end of the lens housing; A fill light, the fill light being installed in the lens housing, and the emitted light of the fill light being used to illuminate the image area of the lens; A light-shielding component, which is installed on the lens housing and is located between the lens and the fill light in the radial direction of the lens housing. The light-shielding component includes a driving part, and the driving part outputs a driving force along the second optical axis direction to change the gap between the front end of the light-shielding component and the hemispherical transparent cover.

[0006] In one embodiment, the light-shielding component has a first light-shielding position located inside the lens housing and with its front end flush with the lens hole, and a second light-shielding position where the front end protrudes from the lens hole out of the lens housing and abuts against the inner surface of the hemispherical transparent cover.

[0007] In one embodiment, the light-shielding component includes: A light-shielding ring, which is driven by the driving part and moves along the second optical axis direction, wherein, the diameter of the lens is smaller than the diameter of the lens hole, the light-shielding ring is formed as an annular shape coaxially arranged with the lens, and the light-shielding ring is installed in the gap between the lens and the lens hole.

[0008] In one embodiment, the light-shielding component includes: A light-shielding bracket, which includes a pair of fixed arms extending along the second optical axis direction and a fixed ring supported by the fixed arms; wherein, the fixed arms are symmetrically located outside the lens, the fixed ring is supported at the front ends of the fixed arms, and the driving part outputs a driving force along the second optical axis direction through the rear ends of the fixed arms; The light-shielding ring is installed on the front surface of the fixed ring.

[0009] In one embodiment, the thickness of the light-shielding ring, or the sum of the thicknesses of the light-shielding ring and the fixed ring is greater than or equal to the gap between the lens and the hemispherical transparent cover.

[0010] In one embodiment, the lens housing includes: A fill light slot, which is located outside the lens hole. The fill light slot has a fill light slot bottom surface located at the rear side of the lens hole in the second optical axis direction and a fill light slot side wall extending along the second optical axis direction between the fill light slot bottom surface and the light-shielding component; wherein, the fill light is installed on the fill light slot bottom surface.

[0011] In one embodiment, it includes: A lens driving assembly, which includes a horizontal driving motor for driving the horizontal rotating bracket to rotate horizontally around the first central axis relative to the hemispherical transparent cover, and a pitching driving motor for driving the lens assembly to pitch and rotate around the second central axis relative to the horizontal rotating bracket; Wherein, either the lens driving assembly or the driving component is started.

[0012] In one embodiment, the driving component is a solenoid valve, and the solenoid valve drives the light-shielding assembly to switch between the first light-shielding position and the second light-shielding position; Wherein, the closing of the driving component corresponds to the first light-shielding position, and the opening of the driving component corresponds to the second light-shielding position.

[0013] In one embodiment, the driving component is a linear motor, and the linear motor drives the light-shielding assembly to move between the first light-shielding position and the second light-shielding position.

[0014] In one embodiment, the start of the lens driving assembly does not correspond to the second light-shielding position. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following drawings only schematically illustrate and explain the present invention, and do not limit the scope of the present invention.

[0016] Figure 1 It is a schematic structural diagram of the hemispherical camera of the present invention.

[0017] Figure 2 It is an exploded view of the hemispherical camera of the present invention.

[0018] Figure 3a and Figure 3b It is a schematic diagram of the first light-shielding position and the second light-shielding position of the light-shielding assembly in the hemispherical camera of the present invention.

[0019] Figure 4 It is a partial exploded view of the first embodiment of the hemispherical camera of the present invention.

[0020] Figure 5 It is a partial exploded view of the first embodiment of the hemispherical camera of the present invention.

[0021] Figure 6 It is a partial exploded view of the second embodiment of the hemispherical camera of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to have a clearer understanding of the technical features, objectives, and effects of the invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings, where the same reference numerals represent the same parts in each figure.

[0023] In this document, "schematic" means "serving as an instance, example, or illustration", and any illustration or implementation described as "schematic" in this document should not be construed as a more preferred or advantageous technical solution.

[0024] For the sake of conciseness of the drawings, only the parts related to the present invention are schematically shown in each drawing, and do not represent the actual structure of the product. In addition, for the sake of conciseness and easy understanding of the drawings, in some drawings, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked.

[0025] In this document, "upper", "lower", "front", "rear", "left", "right", etc. are only used to represent the relative positional relationship between relevant parts, rather than limiting the absolute positions of these relevant parts.

[0026] In this document, "first", "second", etc. are only used for distinction from each other, rather than indicating importance, order, and the prerequisite for mutual existence, etc.

[0027] In this document, "equal", "same", etc. are not strict mathematical and / or geometric limitations, and also include the errors that can be understood by those skilled in the art and are allowed in manufacturing or using, etc. Unless otherwise specified, the numerical ranges in this document include not only the entire range within its two endpoints, but also several sub-ranges included therein.

[0028] Now, various exemplary embodiments will be described more fully with reference to the accompanying drawings.

[0029] To solve the problems in the prior art, the present invention provides a dome camera, in which a lens assembly and a rotating bracket for driving the lens assembly to rotate are all installed within a hemispherical transparent cover, and further includes a fill light for the lens assembly and a light shielding component isolated between the fill light and the lens, which can not only meet the angle adjustment requirements of the camera product, but also improve the image quality of the dome camera.

[0030] As Figures 1 to 5 shown, an embodiment of the present invention provides a dome camera, including: A housing 10, the housing 10 defining a first central axis LP extending along a vertical direction; A hemispherical transparent cover 20, the hemispherical transparent cover 20 being fixed to the housing 10 and protruding from the lower surface of the housing 10; A horizontal rotating bracket 30, the horizontal rotating bracket 30 being rotatably installed within the housing 10 to horizontally rotate around the first central axis LP relative to the hemispherical transparent cover 20; The lens assembly 40 has a second optical axis direction LR. The lens assembly 40 is rotatably mounted on the horizontal rotation bracket 30 around a second central axis LT extending along the horizontal direction to adjust the second optical axis direction LR in pitch. The lens assembly 40 includes: A lens housing 41 that axially extends along the second optical axis direction LR; A lens 42 that is mounted inside the lens housing 41 and has its front end exposed through a lens hole at the front end of the lens housing 41; A supplementary light 43 that is mounted on the lens housing 41, and the emitted light of the supplementary light 43 is used to illuminate the image area of the lens 42; A light-shielding assembly 44 that is mounted on the lens housing 41 and is located between the lens 42 and the supplementary light 43 in the radial direction of the lens housing 41. The light-shielding assembly 44 includes a driving member 441 that outputs a driving force along the second optical axis direction LR to change the gap between the front end of the light-shielding assembly 44 and the hemispherical transparent cover 20.

[0031] In this embodiment, the lens assembly 40 is completely disposed inside the body assembly formed by combining the housing 10 and the hemispherical transparent cover 20, and the body assembly completely encloses the lens assembly 40. The housing 10 includes an upper housing 10a and a lower housing 10b. The housing 10 defines a first central axis LP extending along the vertical direction. The bottom surface of the lower housing 10b has a through hole, and the hemispherical transparent cover 20 is fixed to the through hole and protrudes from the lower surface of the lower housing 10b. The hemispherical transparent cover 20 and the housing 10 together form a closed cavity for mounting the lens assembly 40. The main board assembly 50 is mounted inside the housing 10. The hemispherical transparent cover 20 is formed of a transparent material, and the lens assembly 40 takes pictures through the hemispherical transparent cover 20. The housing 10 is generally formed of an opaque material, and the main board assembly 50, the bracket and the motor for supporting and driving the rotation of the lens assembly 40 are mounted inside the housing 10.

[0032] The optical axis direction of the lens assembly 40 is the second optical axis direction LR, and the second optical axis direction LR can be achieved by rotating the lens assembly 40 along three axial directions, namely the pan direction (P direction), the pitch direction (T direction), and the roll direction (R direction). Different angles of shooting of the hemispherical camera can be achieved through the three-axis rotation of the lens assembly 40.

[0033] Among them, the housing 10 is mounted on a carrier. Usually, it is installed in a substantially horizontal position (such as the ceiling) so that the first central axis LP extends along the vertical direction. Then, the P-direction rotation corresponds to the horizontal rotation of the lens assembly 40, that is, panning, the T-direction rotation corresponds to the pitch rotation of the lens assembly 40, and the R-direction rotation corresponds to the self-rotation of the lens assembly 40 around its second optical axis direction LR.

[0034] In this example, the lens assembly 40 is mounted in the housing 10 via a horizontal rotation bracket 30. Specifically, the horizontal rotation bracket 30 is mounted on the inner wall of the upper housing 10a and can rotate around the first central axis LP to drive the lens assembly 40 to horizontally rotate around the first central axis LP relative to the housing 10 and the hemispherical transparent cover 20. Specifically, the horizontal rotation bracket 30 may have a pair of support arms for supporting the lens assembly 40 to form a U-shaped bracket with an opening downward. The pair of support arms extend along the direction of the first central axis LP, and the lens assembly 40 is rotatably mounted between the pair of support arms. Wherein, the bottom end of each support arm may have a rotation hole, and the pair of rotation holes define a second central axis LT extending in the horizontal direction. The lens assembly 40 is mounted in the rotation hole to pitch and rotate around the second central axis LT relative to the horizontal rotation bracket 30 and to pitch and rotate relative to the hemispherical transparent cover 20. The lens assembly 40 itself may have the freedom to rotate around the second optical axis LR. Thus, regardless of what kind of carrier the housing 10 is mounted on the first central axis LP, the relative relationships of the P direction, T direction, and R direction of the lens assembly 40 remain unchanged, but the direction relative to the ground changes.

[0035] The horizontal rotation bracket 30 is provided with a rotation hole, a rotation protrusion and a groove. On both sides of the outer shell of the lens assembly 40, there are protruding shafts that horizontally extend along the second central axis LT and extend into the rotation hole to be rotationally engaged therewith. The protruding shaft is the second central axis LT. The lens assembly 40 is rotatably connected to the horizontal rotation bracket 30 around the second central axis LT. The second central axis LT is perpendicular to the first central axis LP. When the lens assembly 40 rotates around the second central axis LT, it drives the lens assembly to rotate in the T direction around the second central axis LT, realizing the T-direction rotation of the lens assembly 30.

[0036] The lens assembly 40 includes a supplementary light lamp mounted on the lens housing 41. The supplementary light lamp 43 is used to provide light source for the image area of the lens to provide supplementary light source for the lens assembly 40 under the condition of insufficient ambient light. The emitted light of the supplementary light lamp 43 will enter the lens 42 through the reflection of the hemispherical transparent cover 20, resulting in the captured image being white. In this embodiment, a light-shielding component 44 is provided between the lens 42 and the supplementary light lamp 43. It is isolated between the lens 42 and the supplementary light lamp 43 in the radial direction of the lens housing 41, thereby shielding the emitted light of the supplementary light lamp 43 from directly entering the lens 42. Further, the light-shielding component 44 can change the gap with the hemispherical transparent cover 20 along the second optical axis direction LR under the drive of the driving component 441, thereby improving the image quality by shielding the reflected light of the emitted light of the supplementary light lamp 43 on the hemispherical transparent cover 20 from entering the lens 42.

[0037] Specifically, the light-shielding component 44 has Figure 3a the first light-shielding position shown in the lens housing 11 and flush with the lens hole at the front end, and As shown Figure 3b in the second light-shielding position where the front end protrudes from the lens housing 11 through the lens hole and abuts against the inner surface of the hemispherical transparent cover 20.

[0038] It can be understood that since the lens assembly 40 can be rotationally adjusted in the P direction, T direction, and R direction with respect to the hemispherical transparent cover 20, there must be a gap between the front end of the lens assembly 40, that is, the front end of the lens housing 11, and the hemispherical transparent cover 20. Then, if there is no light-shielding component 44, there is a possibility that the reflected light of the fill light on the inner surface of the hemispherical transparent cover 20 will enter the lens 42.

[0039] And when the light-shielding component 44 abuts against the inner surface of the hemispherical transparent cover 20 as shown Figure 3b in the figure, in the radial direction, the light-shielding component 44 is located between the fill light 43 and the lens 42, and at the same time, it completely blocks the optical path between the fill light 43 and the lens 42, effectively blocking the light emitted by the fill light 43 from entering the lens 42.

[0040] When the lens assembly 40 can be rotationally adjusted in the P direction, T direction, and R direction with respect to the hemispherical transparent cover 20, the contact between the light-shielding component 44 and the inner surface of the hemispherical transparent cover 20 will cause friction on the inner surface of the hemispherical transparent cover 20. Therefore, the light-shielding component 44 also has a first light-shielding position where it disengages from the inner surface of the hemispherical transparent cover 20, so that there is a gap between the front end of the light-shielding component 44 and the inner surface of the hemispherical transparent cover 20, without affecting the rotational adjustment of the lens assembly 40 within the hemispherical transparent cover 20.

[0041] Optionally, since the fill light 43 is not turned on when the lens assembly 40 is rotationally adjusted, there is no need for the light-shielding component 44 to block the reflected light of the fill light 43 at this time.

[0042] In a specific example, the light-shielding component 44 includes: a light-shielding ring 442, which is driven by a driving component 441 and moves along the second optical axis direction LR, wherein, the diameter of the lens 42 is smaller than the diameter of the lens hole, the light-shielding ring 442 is formed as an annular shape coaxially arranged with the lens 42, and the light-shielding ring 442 is installed in the gap between the lens 42 and the lens hole.

[0043] The light-shielding ring 442 forms a clearance fit with both the lens hole and the lens 42, and the movement of the light-shielding ring 442 along the second optical axis direction LR will not interfere with the lens hole and the lens 42.

[0044] Wherein, the light-shielding component 44 includes: The light-shielding bracket 443 includes fixing arms 444 extending along a pair of directions along the second optical axis direction LR, and a fixing ring 445 supported by the fixing arms 444; Among them, the fixing arms 444 are symmetrically located outside the lens 42, the fixing ring 445 is supported at the front ends of the fixing arms 444, and the driving component 441 outputs a driving force along the second optical axis direction LR via the rear ends of the fixing arms 444; The light-shielding aperture 442 is installed on the front surface of the fixing ring 445.

[0045] The light-shielding aperture 442 is formed of a soft and elastically deformable material, such as a silicone material. The front end surface of the light-shielding aperture 442 can be formed into an arc-shaped edge or a chamfered edge for tightly fitting with the arc-shaped inner surface of the hemispherical transparent cover 20.

[0046] In order to ensure the light-shielding quality, the thickness of the light-shielding aperture 442, or the sum of the thicknesses of the light-shielding aperture 442 and the fixing ring 445, is greater than or equal to the gap between the lens 42 and the hemispherical transparent cover 20.

[0047] That is, the distance between the first light-shielding position and the second light-shielding position should be less than or equal to the thickness of the light-shielding aperture 442, or less than or equal to the sum of the thicknesses of the light-shielding aperture 442 and the fixing ring 445. Among them, the thickness direction is the second optical axis direction LR. In this case, when the light-shielding component 44 moves to the second light-shielding position, the light-shielding component 44 is still completely shielded between the lens 42 and the fill light 43 in the radial direction to prevent the light of the fill light 43 from directly entering the lens 42.

[0048] Furthermore, the lens housing 41 includes: A fill light groove 411, the fill light groove 411 is located outside the lens hole, the fill light groove 411 has a fill light groove bottom surface located behind the lens hole in the second optical axis direction LR, and a fill light groove side wall extending along the second optical axis direction LR between the fill light groove bottom surface 441 and the light-shielding component 44; Among them, the fill light 43 is installed on the fill light groove bottom surface.

[0049] Specifically, the dome camera of this embodiment includes: A lens driving assembly, the lens driving assembly includes a horizontal driving motor for driving the horizontal rotation bracket 30 to horizontally rotate around the first central axis LP relative to the hemispherical transparent cover 20, and a pitching driving motor for driving the lens assembly 40 to pitch and rotate around the second central axis LT relative to the horizontal rotation bracket 30; Among them, the lens driving assembly and the driving component 441 are selectively started.

[0050] As described above, in order to avoid the friction caused by the contact between the light-shielding component 44 and the inner surface of the hemispherical transparent cover 20 when the lens assembly 40 is rotationally adjusted, either the lens driving assembly or the driving component 441 is started. That is to say, when the lens assembly 40 is rotationally adjusted in any direction, the light-shielding component 44 necessarily cannot switch to the light-shielding position, or when the light-shielding component 44 switches to the light-shielding position, the lens assembly 40 necessarily cannot be rotationally adjusted.

[0051] Among them, the alternative start of the lens driving assembly and the driving component 441 means that when any one or more of the lens driving assemblies are started, the driving component 441 is not in the starting state.

[0052] Optionally, the driving component 441 is a solenoid valve, and the solenoid valve drives the light-shielding component 44 to switch between the first light-shielding position and the second light-shielding position; Among them, the closing of the driving component 441 corresponds to the first light-shielding position, and the opening of the driving component 441 corresponds to the second light-shielding position.

[0053] The solenoid valve is used to drive the light-shielding component 44 to switch between the first light-shielding position and the second light-shielding position, so the opening or closing of the solenoid valve necessarily corresponds to the position of the light-shielding component 44. Specifically, when the solenoid valve is closed, the light-shielding component 44 is in the first light-shielding position, and there is a gap between the front end of the light-shielding ring and the inner surface of the hemispherical transparent cover 20. At this time, the lens driving assembly can be started, and the lens assembly 40 can be rotationally adjusted. At this time, the light-shielding component 44 does not contact the inner surface of the hemispherical transparent cover 20. When the solenoid valve is opened, the light-shielding component 44 is in the second light-shielding position, and the front end of the light-shielding ring contacts the inner surface of the hemispherical transparent cover 20. At this time, the lens driving assembly cannot be started, and the lens assembly 40 cannot be rotationally adjusted. At the same time, the supplementary light 43 can be turned on, and the light-shielding component 44 is used to block the reflected light of the supplementary light 43 on the inner surface of the hemispherical transparent cover 20 from entering the lens 42.

[0054] From the above technical solutions, it can be seen that when the light-shielding component 44 in the lens assembly 40 does not need to be adjusted in angle to capture a normal image, the light-shielding component 44, especially the light-shielding ring, contacts the hemispherical transparent cover 20. When the lens 42 needs to be adjusted in the T direction and the P direction, the light-shielding component 44 moves along the second optical axis direction LR to the first light-shielding position, and the light-shielding component 44 does not contact the hemispherical transparent cover 20, forming a gap, so as to avoid scratching the hemispherical transparent cover when the light-shielding ring moves in the P direction or the T direction, thereby causing problems in the image.

[0055] As Figure 6 shown, the present invention also provides a hemispherical camera, including: A housing 10, the housing 10 defining a first central axis LP extending along a vertical direction; A hemispherical transparent cover 20, the hemispherical transparent cover 20 being fixed to the housing 10 and protruding from the lower surface of the housing 10; A horizontal rotating bracket 30, the horizontal rotating bracket 30 being rotatably mounted within the housing 10 to horizontally rotate about the first central axis LP relative to the hemispherical transparent cover 20; A lens assembly 40, the lens assembly 40 having a second optical axis direction LR, the lens assembly 40 being rotatably mounted on the horizontal rotating bracket 30 about a second central axis LT extending along a horizontal direction to pitch-adjust the second optical axis direction LR; The lens assembly 40 includes: A lens housing 41, the lens housing 41 axially extending along the second optical axis direction LR; A lens 42, the lens 42 being mounted within the lens housing 41 and having a front end exposed through a lens hole at the front end of the lens housing 41; A supplementary light 43, the supplementary light 43 being mounted on the lens housing 41, and the emitted light of the supplementary light 43 being used to illuminate the image area of the lens 42; A light-shielding assembly 44, the light-shielding assembly 44 being mounted on the lens housing 41 and being located between the lens 42 and the supplementary light 43 in the radial direction of the lens housing 41, the light-shielding assembly 44 including a driving member 441, the driving member 441 outputting a driving force along the second optical axis direction LR to change the gap between the front end of the light-shielding assembly 44 and the hemispherical transparent cover 20.

[0056] Wherein, the driving member 441 is a linear motor, and the linear motor drives the light-shielding assembly 44 to move between a first light-shielding position and a second light-shielding position.

[0057] The starting state of the lens driving assembly does not correspond to the second light-shielding position.

[0058] The linear motor is used to drive the light-shielding assembly 44 to move between the first light-shielding position and the second light-shielding position, then the turning on or off of the linear motor necessarily corresponds to the motion state of the light-shielding assembly 44. Specifically, when the linear motor is turned off, the light-shielding assembly 44 is in the first light-shielding position or the second light-shielding position. When the linear motor is turned on, the light-shielding assembly 44 is at any position between the first light-shielding position and the second light-shielding position and is in a motion state.

[0059] When the light-shielding component 44 is in the first light-shielding position, there is a gap between the front end of the light-shielding ring and the inner surface of the hemispherical transparent cover 20. At this time, the lens driving component can be started, and the lens component 40 can be rotationally adjusted. At this time, the light-shielding component 44 does not contact the inner surface of the hemispherical transparent cover 20. When the light-shielding component 44 is in the second light-shielding position, the front end of the light-shielding ring abuts against the inner surface of the hemispherical transparent cover 20. At this time, the lens driving component cannot be started, and the lens component 40 cannot be rotationally adjusted. Meanwhile, the supplementary light 43 can be turned on, and the light-shielding component 44 is used to block the reflected light of the supplementary light 43 on the inner surface of the hemispherical transparent cover 20 from entering the lens 42.

[0060] Among them, the linear motor can be implemented as a lead screw motor.

[0061] As can be seen from the above technical solutions, when the light-shielding component 44 in the lens component 40 does not need to adjust the angle for normal shooting of the picture, the light-shielding component 44, especially the light-shielding ring and the hemispherical transparent cover 20, are in contact. When the lens 42 needs to be adjusted in the T direction and the P direction, the light-shielding component 44 moves along the second optical axis direction LR to the first light-shielding position. The light-shielding component 44 does not contact the hemispherical transparent cover 20, forming a gap, avoiding scratching the hemispherical transparent cover when the light-shielding ring moves in the P direction or the T direction, thereby causing problems in the image.

[0062] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation manners of the present invention, and are not intended to limit the protection scope of the present invention. Any equivalent implementation manners or changes made without departing from the technical spirit of the present invention, such as the combination, division, or repetition of features, should be included in the protection scope of the present invention.

Claims

1. A hemispherical camera, characterized in that, Comprising: A housing that defines a first central axis extending along a vertical direction; A hemispherical transparent cover that is fixed to the housing and protrudes from the lower surface of the housing; A horizontal rotating bracket that is rotatably installed in the housing around the first central axis to horizontally rotate around the first central axis relative to the hemispherical transparent cover; A lens assembly that has a second optical axis direction, and the lens assembly is rotatably installed in the horizontal rotating bracket around a second central axis extending along a horizontal direction to pitch-adjust the second optical axis direction; The lens assembly includes: A lens housing that axially extends along the second optical axis direction; A lens that is installed in the lens housing and has a front end exposed through a lens hole at the front end of the lens housing; A fill light that is installed in the lens housing, and the emitted light of the fill light is used to illuminate the image area of the lens; A light-shielding assembly that is installed in the lens housing and is located between the lens and the fill light in the radial direction of the lens housing. The light-shielding assembly includes a driving component that outputs a driving force along the second optical axis direction to change the gap between the front end of the light-shielding assembly and the hemispherical transparent cover.

2. The hemispherical camera according to claim 1, wherein The light-shielding assembly has a first light-shielding position located inside the lens housing with its front end flush with the lens hole, and A second light-shielding position where the front end protrudes from the lens hole out of the lens housing and abuts against the inner surface of the hemispherical transparent cover.

3. The hemispherical camera according to claim 2, characterized in that, The light-shielding assembly includes: A light-shielding ring that is driven by the driving component to move along the second optical axis direction, wherein the diameter of the lens is smaller than the diameter of the lens hole, the light-shielding ring is formed as an annular shape coaxially arranged with the lens, and the light-shielding ring is installed in the gap between the lens and the lens hole.

4. The hemispherical camera according to claim 3, characterized in that, The light-shielding assembly includes: A light-shielding bracket that includes a pair of fixing arms extending along the second optical axis direction and a fixing ring supported by the fixing arms; wherein the fixing arms are symmetrically located outside the lens, the fixing ring is supported at the front ends of the fixing arms, and the driving component outputs a driving force along the second optical axis direction through the rear ends of the fixing arms; The light-shielding ring is installed on the front surface of the fixing ring.

5. The hemispherical camera according to claim 4, characterized in that, The thickness of the light-shielding ring, or the sum of the thicknesses of the light-shielding ring and the fixing ring, is greater than or equal to the gap between the lens and the hemispherical transparent cover.

6. The hemispherical camera according to claim 1, wherein The lens housing includes: A fill light groove that is located outside the lens hole. The fill light groove has a fill light groove bottom surface located behind the lens hole in the second optical axis direction and a fill light groove side wall extending along the second optical axis direction between the fill light groove bottom surface and the light-shielding assembly; wherein the fill light is installed on the fill light groove bottom surface.

7. The hemispherical camera according to claim 2, wherein Comprising: A lens driving assembly, the lens driving assembly includes a horizontal driving motor for driving the horizontal rotating bracket to horizontally rotate relative to the hemispherical transparent cover around the first central axis, and a pitching driving motor for driving the lens assembly to pitch and rotate relative to the horizontal rotating bracket around the second central axis; Wherein, the lens driving assembly and the driving component are selectively started.

8. The hemispherical camera according to claim 7, characterized in that, The driving component is a solenoid valve, and the solenoid valve drives the light-shielding component to switch between the first light-shielding position and the second light-shielding position; Wherein, the closing of the driving component corresponds to the first light-shielding position, and the opening of the driving component corresponds to the second light-shielding position.

9. The hemispherical camera according to claim 7, characterized in that, The driving component is a linear motor, and the linear motor drives the light-shielding component to move between the first light-shielding position and the second light-shielding position.

10. The hemispherical camera according to claim 9, wherein The start of the lens driving assembly does not correspond to the second light-shielding position.

Images