Annular light source with adjustable light-emitting angle

Abstract

The utility model discloses an annular light source with an adjustable light-emitting angle. The annular light source comprises a shell, a plurality of light-emitting assemblies and a plurality of adjusting mechanisms. The shell is provided with a shooting window, an opening is formed in the face, opposite to the shooting window, of the shell, the multiple light-emitting assemblies are rotationally connected with the inner wall of the shell and located between the shooting window and the opening, and the multiple light-emitting assemblies are arranged in the circumferential direction; the multiple adjusting mechanisms are connected with the shell and correspond to the multiple light-emitting assemblies in a one-to-one mode. According to the scheme, the adjusting mechanism is used for driving one corresponding light-emitting assembly to rotate, namely, the light-emitting angle of each light-emitting assembly can be adjusted, so that the flexibility of supplementing light to an object by the annular light source is improved, and particularly, good illumination uniformity can be brought to the object with a curved surface or a concave-convex surface; and the reflective surface of the object can be avoided by adjusting the local light-emitting angle of the light-emitting assembly, so that the application scene of the annular light source can be expanded.

Description

Technical Field

[0001] This utility model relates to the technical field of light sources, and in particular to a ring light source with an adjustable emission angle. Background Technology

[0002] Ring light sources are currently widely used in machine vision inspection. However, most existing ring light sources have non-adjustable emission angles, which leads to poor illumination uniformity, limited application scenarios, and insufficient flexibility in supplementary lighting. Examples are given below:

[0003] When inspecting objects with curved or uneven surfaces, using a ring light source with a fixed emission angle can easily lead to localized overexposure or underexposure on the object's surface, resulting in poor illumination uniformity. This means that the near end of the object's surface is overexposed while the far end is underexposed, thus affecting the image contrast. In such cases, multiple light sources are needed to compensate and improve the uniformity of illumination. For objects with highly reflective surfaces, if the emission angle cannot be adjusted, it is difficult to avoid local specular reflections, causing glare interference. For minor scratches or dents, low-angle illumination is required to enhance the contrast of these defects, and a ring light source with a fixed emission angle will struggle to highlight such defects.

[0004] Therefore, improvements to the existing ring light source are needed. Utility Model Content

[0005] This invention provides a ring light source with an adjustable emission angle, mainly solving the technical problem of how to achieve an adjustable emission angle for a ring light source.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable ring light source includes a housing, multiple light-emitting components, and multiple adjustment mechanisms;

[0008] The housing is provided with a shooting window, and the housing is provided with an opening on the side opposite to the shooting window. A plurality of light-emitting components are rotatably connected to the inner wall of the housing and located between the shooting window and the opening. The plurality of light-emitting components are arranged in a circumferential direction. A plurality of adjustment mechanisms are respectively connected to the housing and correspond one-to-one with the plurality of light-emitting components. The adjustment mechanism is used to drive a corresponding light-emitting component to rotate relative to the housing.

[0009] In one of the technical solutions, the adjustment mechanism includes a driving component and a tension spring;

[0010] The tension springs are connected to the housing and the light-emitting component respectively. The light-emitting component is pulled by the tension of the tension spring and abuts against one end of the driving member. The driving member is connected to the housing and is used to push the light-emitting component to rotate relative to the housing.

[0011] In one of the technical solutions, the driving component is a hand screw with external threads, and the outer wall of the housing is provided with multiple threaded holes that extend into the interior. The multiple driving components are connected to the multiple threaded holes one by one.

[0012] In one of the technical solutions, locking holes are provided on the outer wall of the housing at positions corresponding to each of the threaded holes, and the locking holes are connected to the corresponding threaded holes.

[0013] In one of the technical solutions, the housing includes a top shell, a middle shell, and a bottom shell that are fixedly connected in sequence. The top shell has a through-hole shooting window, the bottom shell has a through-hole opening, the middle shell is a hollow annular structure, multiple light-emitting components are rotatably connected to the inner side of the middle shell, the ends of multiple tension springs away from the light-emitting components are fixed to the inner side of the middle shell, and multiple driving components are connected to the middle shell.

[0014] In one of the technical solutions, the housing further includes multiple pivot blocks, and multiple through holes are provided on the outer wall of the middle shell. The pivot block passes through a corresponding through hole to the inner side of the middle shell and is fixedly connected to the middle shell. A pivot is provided on the pivot block, and the light-emitting component rotates relative to the housing about the axis of the pivot.

[0015] In one of the technical solutions, the outer wall of the middle shell is provided with lead-out holes at the positions corresponding to each of the light-emitting components.

[0016] In one of the technical solutions, the light-emitting component includes a lamp holder, a lamp panel, and a focusing element;

[0017] The lamp holder has a mounting groove, the focusing element is disposed at the opening of the mounting groove, the lamp plate is housed in the mounting groove and the light emission direction is towards the focusing element, the end of the lamp holder facing away from the focusing element is rotatably connected to the middle shell with the axis of the rotating shaft as the rotation axis, the upper surface of the lamp holder has a wire outlet hole communicating with the mounting groove, and the lower surface of the lamp holder has a protrusion for abutting against one end of the driving element.

[0018] Compared with the prior art, the ring light source with adjustable emission angle provided by this utility model has at least the following beneficial effects:

[0019] This design incorporates multiple luminous components arranged circumferentially to form a ring-shaped light source. Furthermore, each component is rotatably connected to the housing. Additionally, an adjustment mechanism is designed for each component, allowing rotation of the corresponding component relative to the housing. This adjustment enables the adjustment of the luminous angle of each component, enhancing the flexibility of the ring-shaped light source in providing illumination to objects. It is particularly effective for providing better uniform illumination to objects with curved or uneven surfaces. It also allows for the adjustment of local luminous angles to avoid reflective surfaces. In conclusion, this design expands the application scenarios of the ring-shaped light source. Attached Figure Description

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

[0021] Figure 1 A top-view structural diagram of a ring light source with adjustable emission angle provided in an embodiment of this application;

[0022] Figure 2 A schematic diagram of the structure of a ring light source with adjustable emission angle provided in this application when viewed from below;

[0023] Figure 3 A cross-sectional view of an adjustable-angle ring light source provided in an embodiment of this application;

[0024] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0025] Figure 5 An exploded view of the structure of a ring light source with adjustable emission angle provided in an embodiment of this application;

[0026] Figure 6 for Figure 5 A magnified view of a section at point B in the middle.

[0027] Figure label:

[0028] 1. Housing; 11. Top housing; 111. Shooting window; 12. Middle housing; 121. Threaded hole; 122. Locking hole; 123. Through hole; 124. Outlet hole; 13. Bottom housing; 131. Opening; 14. Rotating block; 15. Rotating shaft;

[0029] 2. Light-emitting component; 21. Lamp holder; 211. Mounting slot; 212. Cable exit hole; 213. Protrusion; 22. Lamp panel; 23. Focusing element;

[0030] 3. Adjustment mechanism; 31. Driving component; 32. Tension spring. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] It should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] Please refer to the following: Figures 1 to 6This utility model provides an adjustable-angle ring light source, specifically including a housing 1, multiple light-emitting components 2, and multiple adjustment mechanisms 3. The housing 1 has a shooting window 111, and an opening 131 on the side opposite the shooting window 111. In actual use, the multiple light-emitting components 2 are located inside the housing 1, that is, between the shooting window 111 and the opening 131. In actual use, the object to be detected needs to be placed on one side of the opening 131, and the multiple light-emitting components 2 illuminate the upper surface of the object. The camera can capture an image of the object through the shooting window 111. Furthermore, the multiple light-emitting components 2 are rotatably connected to the inner wall of the housing 1, and are arranged circumferentially. The multiple adjustment mechanisms 3 are connected to the housing 1, and each adjustment mechanism 3 corresponds one-to-one with a light-emitting component 2, driving a corresponding light-emitting component 2 to rotate relative to the housing 1.

[0037] Specifically, this solution designs multiple light-emitting components 2 arranged along the circumference to form a ring-shaped light source. Secondly, each light-emitting component 2 is designed to be rotatably connected to the housing 1. Furthermore, this solution also designs an adjustment mechanism 3 for each light-emitting component 2. The adjustment mechanism 3 can drive the corresponding light-emitting component 2 to rotate relative to the housing 1, that is, the light emission angle of each light-emitting component 2 can be adjusted. This is beneficial to improve the flexibility of the ring light source in supplementing light to objects, especially to bring better illumination uniformity to objects with curved or uneven surfaces. It is also beneficial to avoid reflective surfaces of objects by adjusting the local light emission angle. In summary, this solution is conducive to expanding the application scenarios of the ring light source.

[0038] Please refer to them again. Figures 1 to 6The adjustment mechanism 3 specifically includes a drive member 31 and a tension spring 32. One end of the tension spring 32 is fixed to the housing 1, and the other end is fixed to a corresponding light-emitting component 2. When the light-emitting component 2 is pulled by the tension spring 32, it abuts against one end of the drive member 31. The drive member 31 is connected to the housing 1 and is used to push the light-emitting component 2 to rotate relative to the housing 1. In fact, when the light-emitting component 2 is pushed by the drive member 31, the light-emitting component 2 will drive the tension spring 32 to be gradually stretched. The drive member 31 can be a micro-head or a hand screw. In this embodiment, the drive member 31 is preferably designed as a hand screw with external threads. Based on this, multiple threaded holes 121 penetrating into the interior need to be provided on the outer wall of the housing 1. Multiple drive members 31 are connected to multiple threaded holes 121 in a one-to-one correspondence. That is, each drive member 31 is screwed into a corresponding threaded hole 121. By operating the drive member 31 to screw into or out of the threaded hole 121, the light-emitting angle of the corresponding light-emitting component 2 is adjusted. Preferably, a locking hole 122 is provided on the outer wall of the housing 1 at the position corresponding to each threaded hole 121. The locking hole 122 is connected to the corresponding threaded hole 121. A nut screw is screwed into the locking hole 122 and abuts against the drive member 31 to lock the position of the drive member 31, preventing the position of the drive member 31 from changing when the ring light source is vibrated, thereby ensuring that the light-emitting component 2 can maintain the adjusted light-emitting angle.

[0039] Please refer to them again. Figures 1 to 6 The housing 1 specifically includes a top shell 11, a middle shell 12, and a bottom shell 13. The top shell 11 is fixed to the top of the middle shell 12, and the bottom shell 13 is fixed to the bottom of the middle shell 12. The top shell 11 has the aforementioned shooting window 111, and the bottom shell 13 has the aforementioned opening 131. In fact, the top shell 11, middle shell 12, and bottom shell 13 are all hollow annular structures. The aforementioned multiple light-emitting components 2 are actually rotatably connected to the inside of the middle shell 12, and one end of the aforementioned multiple tension springs 32 is actually fixed to the inside of the middle shell 12. The multiple driving components 31 are actually connected to the middle shell 12. By dividing the housing 1 into three parts, it is convenient to install the multiple light-emitting components 2 and the multiple tension springs 32 inside the housing 1.

[0040] Please refer to them again. Figures 1 to 6In this embodiment, the housing 1 also includes multiple pivot blocks 14. Multiple through holes 123 are provided on the outer wall of the middle housing 12. The number of through holes 123 and the number of pivot blocks 14 are the same as the number of light-emitting components 2. Each pivot block 14 passes through a corresponding through hole 123 into the inner side of the middle housing 12 and is fixedly connected to it. A pivot shaft 15 is provided on the pivot block 14, and the light-emitting component 2 rotates relative to the housing 1 about the axis of the pivot shaft 15. Therefore, by providing pivot blocks 14, it is beneficial to achieve a rotatable connection between the light-emitting component 2 and the housing 1. Furthermore, each light-emitting component 2 has an outlet hole 124 at the position corresponding to each light-emitting component 2 on its outer wall. The positive and negative terminals of each light-emitting component 2 can be led outwards from a corresponding outlet hole 124, allowing each light-emitting component 2 to be connected to an external power source.

[0041] Please refer to the following: Figure 4 and Figure 6 The light-emitting component 2 specifically includes a lamp holder 21, a lamp panel 22, and a focusing element 23. The lamp holder 21 has a mounting groove 211 with the groove opening facing downwards and an opening 131. The focusing element 23 is disposed at the groove opening of the mounting groove 211. The lamp panel 22 is housed in the mounting groove 211 and its light emission direction is towards the focusing element 23. The focusing element 23 is equivalent to a focusing lens. The light emitted by the lamp panel 22 can emit a brighter light band after being focused by the focusing element 23, thereby improving the utilization rate of light. Since multiple light-emitting components 2 are arranged adjacent to each other in the circumferential direction, there is no space to accommodate other components on the opposite sides of the lamp holder 21. Therefore, the lamp holder 21 is rotatably connected to the middle shell 12 at the end facing away from the focusing member 23 (i.e., the top of the lamp holder 21) with the axis of the aforementioned rotating shaft 15 as the axis of rotation. The upper surface of the lamp holder 21 is provided with a wire outlet hole 212 that connects to the mounting groove 211. The positive and negative poles on the lamp plate 22 can be led outward from this wire outlet hole 212. The lower surface of the lamp holder 21 is provided with a protrusion 213. This protrusion 213 is used to abut against one end of the driving member 31, so that the driving member 31 can drive the entire light-emitting component 2 to rotate by driving the protrusion 213. The light-emitting component 2 of this solution only has features in the vertical direction, so the structure is more compact and reasonable.

[0042] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A ring light source with an adjustable emission angle, characterized in that, Includes a housing, multiple light-emitting components, and multiple adjustment mechanisms; The housing is provided with a shooting window, and the housing is provided with an opening on the side opposite to the shooting window. A plurality of light-emitting components are rotatably connected to the inner wall of the housing and located between the shooting window and the opening. The plurality of light-emitting components are arranged in a circumferential direction. A plurality of adjustment mechanisms are respectively connected to the housing and correspond one-to-one with the plurality of light-emitting components. The adjustment mechanism is used to drive a corresponding light-emitting component to rotate relative to the housing.

2. The ring light source with adjustable emission angle as described in claim 1, characterized in that, The adjustment mechanism includes a drive component and a tension spring; The tension springs are connected to the housing and the light-emitting component respectively. The light-emitting component is pulled by the tension of the tension spring and abuts against one end of the driving member. The driving member is connected to the housing and is used to push the light-emitting component to rotate relative to the housing.

3. The ring light source with adjustable emission angle as described in claim 2, characterized in that, The driving component is a hand screw with external threads, and the outer wall of the housing is provided with multiple threaded holes that extend into the interior. The multiple driving components are connected to the multiple threaded holes one by one.

4. The ring light source with adjustable emission angle as described in claim 3, characterized in that, Locking holes are provided on the outer wall of the housing at positions corresponding to each of the threaded holes, and the locking holes are connected to the corresponding threaded holes.

5. The ring light source with adjustable emission angle as described in claim 2, characterized in that, The housing includes a top shell, a middle shell, and a bottom shell that are fixedly connected in sequence. The top shell has a through-hole shooting window, and the bottom shell has a through-hole opening. The middle shell is a hollow annular structure. Multiple light-emitting components are rotatably connected to the inner side of the middle shell. The ends of multiple tension springs away from the light-emitting components are fixed to the inner side of the middle shell, and multiple driving components are connected to the middle shell.

6. The ring light source with adjustable emission angle as described in claim 5, characterized in that, The housing also includes multiple pivot blocks. Multiple through holes are provided on the outer wall of the middle shell. The pivot block passes through a corresponding through hole into the inner side of the middle shell and is fixedly connected to the middle shell. A pivot is provided on the pivot block. The light-emitting component rotates relative to the housing about the axis of the pivot.

7. The ring light source with adjustable emission angle as described in claim 6, characterized in that, The outer wall of the middle shell is provided with lead-out holes at the positions corresponding to each of the light-emitting components.

8. The ring light source with adjustable emission angle as described in claim 6, characterized in that, The light-emitting component includes a lamp holder, a lamp panel, and a focusing element; The lamp holder has a mounting groove, the focusing element is disposed at the opening of the mounting groove, the lamp plate is housed in the mounting groove and the light emission direction is towards the focusing element, the end of the lamp holder facing away from the focusing element is rotatably connected to the middle shell with the axis of the rotating shaft as the rotation axis, the upper surface of the lamp holder has a wire outlet hole communicating with the mounting groove, and the lower surface of the lamp holder has a protrusion for abutting against one end of the driving element.

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