Dimming accessories, lighting fixtures and industrial vision systems

Abstract

This invention discloses a dimming accessory, a lighting device, and an industrial vision system. The dimming accessory is used to assemble with a lighting body and adjust the light path of the lighting body. The dimming accessory includes a first dimming component and a second dimming component. The first dimming component has a first reflective surface, and at least one end of the first dimming component is used to connect to the lighting body. The second dimming component has a second reflective surface, which is at least partially opposite to the first reflective surface, and at least one end of the second dimming component is used to connect to the lighting body. When the first dimming component and the second dimming component are assembled with the lighting body at the same time, the first dimming component and the second dimming component are spaced apart, and a dimming channel is formed between the first reflective surface and the second reflective surface. After the light emitted by the lighting body enters the dimming channel, it leaves the dimming channel after being reflected once or multiple times by the first reflective surface and the second reflective surface, and is directed towards the lighting target.

Description

Technical Field

[0001] This invention relates to the field of industrial vision technology, and more particularly to a dimming accessory, lighting device, and industrial vision system. Background Technology

[0002] In the field of industrial vision, the lighting requirements for illumination imaging are high. However, in some application scenarios, the lighting effect cannot meet the actual lighting imaging needs of the scenario, resulting in poor imaging and thus seriously affecting the actual operation effect of the industrial vision system in the scenario. Summary of the Invention

[0003] In view of this, this application provides a dimming accessory, a lighting device, and an industrial vision system, wherein the dimming accessory can be applied to the lighting device, and the industrial vision system includes the lighting device, in order to improve the above-mentioned technical problems.

[0004] The first aspect of this application provides a dimming accessory for mounting on a lighting body and adjusting the light path of the lighting body. The dimming accessory includes a first dimming component and a second dimming component. The first dimming component has a first reflective surface, and at least one end of the first dimming component is used to connect to the lighting body. The second dimming component has a second reflective surface, which is at least partially opposite to the first reflective surface, and at least one end of the second dimming component is used to connect to the lighting body. When the first dimming component and the second dimming component are mounted on the lighting body at the same time, the first dimming component and the second dimming component are spaced apart, and a dimming channel is formed between the first reflective surface and the second reflective surface. After the light emitted by the lighting body enters the dimming channel, it leaves the dimming channel after being reflected once or multiple times by the first reflective surface and the second reflective surface, and is directed toward the lighting target.

[0005] Dimming accessories essentially expand the application range of lighting devices. In industrial vision systems, lighting devices do not need to be replaced with the main lighting unit. By simply selecting whether to equip them with dimming accessories, the lighting devices can be adapted to more application scenarios in industrial vision systems without changing the overall structure of the lighting devices in the industrial vision system. This expands the application scenarios and reduces the system cost of industrial vision systems.

[0006] The second aspect of this application provides a lighting device, which includes a lighting body and a dimming accessory as described in the first aspect of this application. The dimming accessory can be assembled to the lighting body, wherein a first reflective unit can be connected to the lighting body through a first connecting end, and a second reflective unit can be connected to the lighting body through a second connecting end.

[0007] A third aspect of this application provides an industrial vision system, which includes the lighting device described in the second aspect of this application.

[0008] Since the beneficial effects of the embodiments of the second and third aspects of this application are derived from the embodiments of the first aspect of this application, the main beneficial effects of the embodiments of the second and third aspects of this application can be specifically referred to the beneficial effects of the embodiments of the first aspect of this application, and will not be repeated here.

[0009] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, embodiments of this application are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a structural schematic diagram of the lighting device in the assembled state in this application;

[0012] Figure 2 for Figure 1 Exploded view;

[0013] Figure 3 for Figure 1 A schematic diagram of the light path in use;

[0014] Figure 4 This is a schematic diagram of the forward structure of the second dimming component;

[0015] Figure 5 This is a schematic diagram of the back structure of the second dimming component;

[0016] Figure 6 This is a three-dimensional structural diagram of the first dimming component;

[0017] Figure 7 This is a rear view of the first dimming component;

[0018] Figure 8 for Figure 7 Cross-sectional view at point AA;

[0019] Figure 9 This is a front view of the first dimming component;

[0020] Figure 10 This is a schematic diagram of the main lighting unit.

[0021] Reference numerals: 1000-Lighting device, 2000-Lighting target, 1-Lighting body, 10-Outer shell, 100-Light-transmitting plate, 101-Light-transmitting surface, 102-Light-emitting area, 103-Image acquisition area, 11-Acquisition component, 2-Dimming accessory, 20-First dimming component, 200-First reflecting unit, 201-First reflecting surface, 202-First connecting end, 203-First free end, 210-First mounting base, 220-Avoidance recess, 23-Second dimming component, 230-Second reflecting unit, 231-Second reflecting surface, 232-Second connecting end, 233-Second free end, 240-Second mounting base, 250-Reinforcing rib, 211-Avoidance through hole, 3-Dimming channel;

[0022] Z - First direction, Y - Second direction. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0024] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains. The terms “an,” “a,” or “the,” as used herein, do not indicate a limitation of quantity, but are merely used to indicate the presence of at least one. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] Industrial vision technology is an automated inspection and identification method that combines computer vision, image processing, and optical imaging technologies, and is widely used in industrial production. It simulates human vision by using optical devices (such as cameras, lenses, and light sources) to acquire image information of objects, and then analyzes and processes the images using image processing algorithms to achieve functions such as feature detection, size measurement, defect detection, object recognition, and location. Industrial vision technology is an important component of modern industrial automation and intelligent manufacturing, and its application scope and market size are constantly expanding with continuous technological development.

[0027] The main components of industrial vision technology are hardware equipment and software systems. The hardware equipment includes industrial vision systems, which specifically include at least a camera, lens, light source, and image acquisition card. The camera is used to capture images, the lens is used for focusing and imaging, and the light source provides illumination for imaging. The type and angle of the light source will affect the image quality and detection effect.

[0028] Industrial vision technology has various applications, such as quality inspection, size measurement, object positioning and recognition, character recognition, and logistics sorting. Industrial vision technology can be customized and optimized according to different application scenarios and needs. During the use of this technology, there is no need for a robotic arm to hold and move the object to be measured in order to view the feature information (such as size, scratches, text information, etc.) on the object, thus avoiding damage caused by the robotic arm. Moreover, due to the small impact of human factors, the hardware can operate stably for a long time, achieving high-precision measurement while also meeting the needs of high-speed production lines.

[0029] Below is a brief introduction to some application scenarios: Quality inspection is used to detect defects such as scratches, cracks, and holes on product surfaces, improving product quality and production efficiency; Dimensional measurement involves high-precision measurement of parts' dimensions, such as length, width, and diameter, ensuring products meet design requirements; Object positioning and recognition is used on automated assembly lines to identify and locate parts, guiding robots for precise grasping and assembly; Character recognition is used to identify labels, barcodes, characters, and other information on products, enabling product traceability and management; and Logistics sorting is used in the logistics field to identify and classify packages, improving sorting efficiency.

[0030] In industrial vision systems, lighting devices are required to illuminate targets, enabling the acquisition components within the system to collect relevant data. However, the position of the lighting device on the target varies depending on the application scenario. For example, in quality inspection, the lighting device needs to provide low-angle illumination to clearly reveal scratches, cracks, and other defects on the target. In this case, the focus is on capturing local features. However, low-angle lighting may create shadows on the target due to the device's position, making it unsuitable for dimensional measurement scenarios. In such cases, the lighting angle needs to be adjusted to meet the requirements of dimensional measurement. Therefore, a lighting device capable of dimming is needed to adapt to various application scenarios and expand its applicability.

[0031] The following will refer to the appendices in the embodiments of this application. Figure 1 -Appendix Figure 10 The technical solutions in the embodiments of this application are clearly and completely described. The coordinate directions in each figure correspond to the geometric directions of the lighting body 1. That is, the Z direction in the figure represents the height direction of the lighting body 1, and the Y direction in the figure represents the width direction of the lighting body 1. For the geometric direction description of the local structure, please refer to the direction of the lighting body 1.

[0032] Please refer to this first. Figures 1 to 3 This application provides an industrial vision system, which includes a lighting device 1000. The lighting device 1000 includes a lighting body 1 and a dimming accessory 2. The dimming accessory 2 can be mounted on the lighting body 1 and adjust the light path of the lighting body 1.

[0033] Specifically, the dimming accessory 2 is used to be assembled on the lighting body 1. The dimming accessory 2 can be assembled on the lighting body 1 to adjust the light path of the lighting body 1 so that the illumination of the lighting device 1000 can meet the application scenarios of the industrial vision system.

[0034] The dimming accessory 2 includes a first dimming component 20, which has a first reflective surface 201, and at least one end of the first dimming component 20 is used to connect to the lighting body 1. The light path of the lighting body 1 can be changed by the reflection of the first reflective surface 201.

[0035] The dimming accessory 2 also includes a second dimming component 23, which has a second reflective surface 231. The second reflective surface 231 is at least partially opposite to the first reflective surface 201, and at least one end of the second dimming component 23 is used to connect to the lighting body 1. The light path of the lighting body 1 is further changed by the reflection of the first reflective surface 201 and then by the reflection of the second reflective surface 231.

[0036] Specifically, when the first dimming component 20 and the second dimming component 23 are simultaneously assembled on the lighting body 1, the first dimming component 20 and the second dimming component 23 are separated from each other, and a dimming channel 3 is formed between the first reflective surface 201 and the second reflective surface 231. After the light emitted by the lighting body 1 enters the dimming channel 3, it leaves the dimming channel 3 after being reflected once or multiple times by the first reflective surface 201 and the second reflective surface 231, and is directed toward the lighting target 2000.

[0037] The dimming accessory 2 provided in this application can be installed on the lighting body 1. When the industrial vision system needs to switch application scenarios, the user can change the light path of the lighting body 1 by installing the dimming accessory 2, thereby adjusting the actual illumination range of the lighting device 1000, so that the illumination of the lighting device 1000 matches the actual application scenario of the industrial vision system. It should be mentioned that when the illumination range of the lighting device 1000 matches the actual application scenario of the industrial vision system, that is, when the light path of the lighting body 1 can form the illumination range required by the lighting device 1000, it is not necessary to install the dimming accessory 2 on the lighting body 1.

[0038] In summary, the dimming accessory 2 can change the light path of the lighting body 1, thereby enabling the lighting device 1000 to change its lighting range. When the lighting device 1000 needs to be matched with different industrial vision system application scenarios, the user can equip the lighting body 1 with the dimming accessory 2 to make the lighting range of the lighting device 1000 match the lighting requirements of the industrial vision system application scenario.

[0039] In short, the dimming accessory 2 increases the application range of the lighting device 1000. In the industrial vision system, the lighting device 1000 does not need to replace the main lighting unit 1. By simply choosing whether to equip the dimming accessory 2, the lighting device 1000 can be matched to more application scenarios of the industrial vision system without changing the overall structure of the lighting device 1000 in the industrial vision system. Thus, the application scenarios of the industrial vision system are expanded and the system cost is reduced.

[0040] In addition, the assemblable design of the dimming accessory 2 does not change the original structural form of the lighting main body 1, thereby effectively shortening the product development cycle of the lighting device 1000 and enabling the lighting device 1000 to change the illumination range by adding the dimming accessory 2.

[0041] In some embodiments, the dimming accessory 2 is of a universal size, meaning that one dimming accessory 2 can be matched and applied to multiple lighting subjects 1. In this case, the user can assemble the same dimming accessory 2 on multiple lighting subjects 1 at different times to change the light path of the lighting subject 1. Thus, although multiple lighting devices 1000 require multiple lighting subjects 1, the same dimming accessory 2 can be used by staggering the usage time of the dimming accessory 2, thereby reducing the cost of the lighting device 1000 to a certain extent.

[0042] Further references can be consulted. Figures 6 to 9 Furthermore, the lighting body 1 has a first direction Z and a second direction Y arranged perpendicularly to each other, and the light path extends along the second direction Y. The first direction Z can be referenced to the height direction of the lighting body 1, and the second direction Y can be referenced to the width direction of the lighting body 1.

[0043] The first dimming assembly 20 includes at least one first reflective unit 200. The first reflective unit 200 is used to change the light path of the lighting body 1. The first reflective unit 200 has a first reflective surface 201, and a first connecting end 202 and a first free end 203 formed on opposite sides of the first reflective surface 201. The first connecting end 202 is used to connect the lighting body 1 so that a connection relationship is formed between the first reflective unit 200 and the lighting body 1.

[0044] Along the first direction Z of the lighting body 1, the first free end 203 is away from the lighting body 1 relative to the first connecting end 202; along the second direction Y of the lighting body 1, the line connecting the first connecting end 202 and the first free end 203 forms an angle with the light path of the lighting body 1. Thus, the first reflecting unit 200 is inclined relative to the lighting body 1. When the light from the lighting body 1 shines on the first reflecting surface 201 of the first reflecting unit 200, the light path is reflected by the first reflecting surface 201 to the second reflecting surface 231, thereby changing the light path.

[0045] In the above embodiments, since the first reflective unit 200 is inclined relative to the lighting body 1, the first reflective unit 200 has a certain projected area on the light-transmitting surface 101 of the lighting body 1 in the width direction of the lighting body 1. Therefore, regardless of whether the light path of the lighting body 1 and the width direction of the lighting body 1 are at an angle, at least part of the light path of the lighting body 1 can illuminate the first reflective surface 201, thereby realizing the change of the light path.

[0046] Further references can be consulted. Figure 4 and Figure 5 Furthermore, the second dimming assembly 23 includes at least one second reflection unit 230, which is used to further change the light path of the lighting body 1.

[0047] The second reflective unit 230 has a second reflective surface 231, and a second connecting end 232 and a second free end 233 formed on opposite sides of the second reflective surface 231. The second connecting end 232 is used to connect to the lighting body 1 so that a connection relationship is formed between the second reflective unit 230 and the lighting body 1.

[0048] In the assembled state of the dimming accessory 2, the first connecting end 202 is spaced apart from the second connecting end 232, and the first free end 203 is spaced apart from the second free end 233, so as to form a dimming channel 3 between the first reflective surface 201 and the second reflective surface 231.

[0049] Along the first direction Z of the lighting body 1, the second free end 233 is away from the lighting body 1 relative to the second connecting end 232; along the second direction Y of the lighting body 1, the line connecting the second connecting end 232 and the second free end 233 forms an angle with the light path of the lighting body 1. Therefore, the second reflecting unit 230 is inclined to the lighting body 1, and when the light from the lighting body 1 is reflected from the first reflecting surface 201 to the second reflecting surface 231, the light path is further changed.

[0050] When the first dimming component 20 and the second dimming component 23 are simultaneously assembled on the lighting body 1, the first reflection unit 200 and the second reflection unit 230 are both connected to the lighting body 1. Along the second direction Y, the first reflection surface 201 and the second reflection surface 231 are spaced apart and arranged opposite to each other, and a dimming channel 3 is formed between the first reflection surface 201 and the second reflection surface 231.

[0051] In the above embodiment, the second reflective unit 230 is inclined relative to the lighting body 1, and the second free end 233 and the first free end 203 are spaced apart, and the second connecting end 232 and the first connecting end 202 are spaced apart. In this way, the first reflective unit 200 and the second reflective unit 230 can naturally form a dimming channel 3 through the connection position, without the need to open an additional light inlet to connect the dimming channel 3. Thus, the light path of the lighting body 1 can leave the dimming channel 3 after entering the dimming channel 3 and being adjusted by one or more reflections through the first reflective surface 201 and the second reflective surface 231.

[0052] Furthermore, along the second direction Y of the lighting body 1, the second free end 233 is farther away from the first reflective unit 200 relative to the second connecting end 232, and the first free end 203 is closer to the second reflective unit 230 relative to the first connecting end 202. Thus, the first reflective unit 200 is located inside the second reflective unit 230. At this time, after the light path of the lighting body 1 is adjusted by the reflection of the first reflective unit 200 and the second reflective unit 230, the lighting device 1000 can be adjusted from high-angle lighting to low-angle lighting, changing the original lighting range of the lighting device 1000 so that the lighting device 1000 can be adapted to applications such as quality inspection and character recognition.

[0053] First, it's important to understand that high-angle lighting refers to a lighting method where the angle between the light emitted from the light source and the surface of the object being measured is greater than 45°. In other words, the final lighting angle of the light source can be considered relatively high. Low-angle lighting refers to a lighting method where the angle between the light emitted from the light source and the surface of the object being measured is less than 45°. In other words, the final lighting angle of the light source can be considered relatively low.

[0054] For reference Figure 3 In this context, α1 and α2 refer to the angle between the light from the lighting subject 1 (which can also be considered as the initial light from the light source) and the light-transmitting surface 101, and β1 and β2 refer to the angle between the light reflected by the dimming accessory 2 (i.e., the light emitted from the light source) and the light-transmitting surface 101. It can be seen that α1 and α2 are greater than β1 and β2, that is, after the adjustment by the dimming accessory 2, the lighting device 1000 changes from high-angle lighting to low-angle lighting.

[0055] Specifically, with Figure 3 The embodiment shown in the figure is described below. When the initial light of the light source is emitted along the second direction Y in the figure, the angles α1 and α2 between the light of the lighting body 1 (which can also be regarded as the initial light of the light source) and the light-transmitting surface 101 are greater than 45°. If the lighting body 1 is not equipped with the aforementioned dimming accessory 2, then the light emitted by the light source is the light of the lighting body 1. At this time, the final lighting angle of the light source is too high, and the lighting device 1000 is in a high-angle lighting state.

[0056] When the dimming accessory 2 is assembled on the lighting body 1, the light emitted from the lighting body 1 (which can also be considered as the initial light of the light source) first moves to the first reflecting surface 201, is reflected by the first reflecting surface 201 to the second reflecting surface 231, and then, after being reflected by the second reflecting surface 231, is emitted out of the dimming channel 3. At this time, the emission direction of the light emitted from the light source changes compared to the light emitted from the lighting body 1. Specifically, the first reflecting surface 201 reflects the light from the lighting body 1 to the second reflecting surface 231, so that the emission position of the light emitted from the light source is located at the second reflecting surface 231, thereby achieving a change in the emission position of the light emitted from the light source.

[0057] As above, in Figure 3 In the illustrated embodiment, the light from the lighting body 1 is reflected by the dimming accessory 2, and the emission position of the light emitted from the light source changes from the original surface of the lighting body 1 to the second reflective surface 231 of the second dimming component 23. Due to the change in the emission position of the light emitted from the light source, the angle between the light emitted from the light source and the surface of the object being measured changes accordingly. That is, after the dimming accessory 2 is added to the lighting body 1, the emission position of the light emitted from the light source changes, thereby the dimming accessory 2 adjusts the path of the light from the lighting body 1.

[0058] In other words, when the lighting body 1 is equipped with the dimming accessory 2, the first reflective surface 201 and the second reflective surface 231 in the dimming accessory 2 can change the light emission position of the lighting body 1, thereby changing the angle between the light emitted by the light source and the surface of the object being measured, so that the lighting device 1000 changes from high-angle lighting to low-angle lighting, and correspondingly changes the lighting range when the lighting device 1000 illuminates the surface of the object being measured.

[0059] In other embodiments, the ability of the dimming accessory to adjust the light of the lighting body 1 can be further optimized by changing the relative tilt state (facing each other or back to each other) and tilt angle (relative to the surface of the lighting body 1) of the first reflective unit 200 and the second reflective unit 230, the relative spacing of the first reflective unit 200 and the second reflective unit 230, and the shape of the first reflective unit 200 and / or the second reflective unit 230 (such as bending, wavy, etc.), thereby further changing the lighting range and specific lighting effect of the lighting device 1000.

[0060] Optionally, there are multiple second reflective units 230, and the second dimming assembly 23 further includes a second mounting base 240 for connecting the lighting body 1. The second mounting base 240 is provided with a clearance through hole 211. The second connection ends 232 of the multiple second reflective units 230 are all connected to the second mounting base 240. The multiple second reflective units 230 are distributed circumferentially along the clearance through hole 211. When the first dimming assembly 20 and the second dimming assembly 23 are simultaneously assembled on the lighting body 1, the clearance through hole 211 connects to the dimming channel 3 so that the light from the lighting body 1 can enter the dimming channel 3.

[0061] The first connecting end 202 is connected to the lighting body 1, and at least part of the first reflective surface 201 is exposed in the avoidance through hole 211 so that the light from the lighting body 1 can illuminate the first reflective surface 201.

[0062] By providing a second mounting base 240, the second dimming component 23 can be pre-installed before being assembled onto the lighting body 1, allowing multiple second reflective units 230 to be connected to the second mounting base 240. Then, by assembling the second mounting base 240 onto the lighting body 1, the second reflective units 230 are assembled onto the lighting body 1. This not only reduces the complexity of the connection between the second dimming component 23 and the lighting body 1 to a certain extent, but also reduces the structural interference between the two when the second dimming component 23 is connected to the lighting body 1. This allows users to assemble the second dimming component 23 onto the lighting body 1 more quickly and conveniently, reducing the installation difficulty for users.

[0063] In addition, the arrangement of multiple second reflective units 230 can cover the first reflective surface 201 of the first reflective unit 200 from multiple directions. When the dimming channel 3 is an open channel, the light reflected by the first reflective surface 201 can be reflected to the second reflective surface 231 with a high probability, thereby achieving a dimming effect and further reducing the impact of light leakage from between the first reflective unit 200 and the second reflective unit 230 on the lighting effect of the lighting device 1000.

[0064] Furthermore, the second reflector unit 230 is connected to the second mounting base 240 via the second connecting end 232 to connect to the lighting body 1. In this way, the lighting body 1 only needs to provide the connection structure (such as screw holes) of the second mounting base 240, avoiding the lighting body 1 from affecting its original structure due to the need to provide multiple connection structures (such as screw holes), and to a certain extent reducing the impact of the connection structure (such as screw holes) on the lighting effect of the lighting body 1.

[0065] Furthermore, there are multiple first reflective units 200, and the first dimming assembly 20 also includes a first mounting base 210 for connecting to a second mounting base 240; wherein, one first reflective unit 200 corresponds to one second reflective unit 230.

[0066] When the first dimming component 20 and the second dimming component 23 are simultaneously assembled on the lighting body 1, the first mounting base 210 partially blocks the through hole 211. On the outer periphery of the first mounting base 210, a first reflection unit 200 and a second reflection unit 230 constrain each other to form a dimming channel 3. In this way, the first dimming component 20 and the second dimming component 23 can adjust the light path in multiple directions.

[0067] The first connection ends 202 of the multiple first reflection units 200 are all connected to the first mounting base 210. The multiple first reflection units 200 are distributed circumferentially along the first mounting base 210. As a result, in the second direction Y of the lighting body 1, the projection area of ​​the first dimming component 20 on the lighting body 1 is increased. The first dimming component 20 can adjust the light of the lighting device 1000 in multiple directions, thereby enhancing the light adjustment capability of the dimming accessory 2.

[0068] In addition, by setting the first mounting base 210, the dimming accessory 2 can be pre-installed before being assembled onto the lighting body 1, so that multiple first reflective units 200 are connected to the first mounting base 210. Then, through the connection between the first mounting base 210 and the second mounting base 240, the first reflective units 200 are assembled onto the lighting body 1. In this way, not only can the complexity of the connection between the first dimming component 20 and the lighting body 1 be reduced to a certain extent, but the structural interference when the dimming accessory 2 is connected to the lighting body 1 can also be reduced, so that users can assemble the dimming accessory 2 onto the lighting body 1 more quickly and conveniently, reducing the installation difficulty for users.

[0069] In other aspects, due to the arrangement of multiple first mounting bases 210 and second mounting bases 240, and the fact that the first mounting base 210 can be connected to the lighting body 1 through the second mounting base 240, the lighting body 1 only needs to provide the connection structure of the second mounting base 240. This avoids the lighting body 1 from affecting its original structure due to the need to provide multiple connection structures (such as screw holes), and to a certain extent reduces the impact of the connection structures (such as screw holes) on the lighting effect of the lighting body 1.

[0070] Furthermore, the second dimming assembly 23 also includes a reinforcing rib 250, which is located on the side of the second reflective unit 230 facing away from the second reflective surface 231. The second mounting base 240 and the second reflective unit 230 are respectively connected to the opposite ends of the reinforcing rib 250. In this way, the connection strength between the second mounting base 240 and the second reflective unit 230 can be strengthened, thereby increasing the structural stability of the second dimming assembly 23.

[0071] Optionally, the first reflective unit 200 is interconnected with the first mounting base 210 and forms an integral structure, and / or the second reflective unit 230 is interconnected with the second mounting base 240 and forms an integral structure. This further reduces the assembly steps of the dimming accessory 2, reduces the installation difficulty for users, and enables users to quickly and conveniently assemble the dimming accessory 2 to the lighting body 1.

[0072] For reference Figures 1 to 3In some embodiments, the first reflective surface 201 and the second reflective surface 231 are both curved reflective surfaces, and the first reflective surface 201 and the second reflective surface 231 are both curved in the direction away from each other. Thus, compared with a flat surface, the curved first reflective surface 201 and the second reflective surface 231 have a larger reflective area, which enhances the dimming capability of the dimming accessory 2.

[0073] On the other hand, when the first reflective surface 201 and the second reflective surface 231 are curved reflective surfaces, and the curvature directions of the two surfaces are opposite, the dimming accessory 2 can adjust the high-angle lighting to low-angle lighting while also achieving a certain focusing effect. Thus, the lighting device 1000 can have a stronger local lighting effect in the industrial vision system and is more suitable for application scenarios such as quality inspection and character recognition.

[0074] In some embodiments, the first reflective surface 201 and the second reflective surface 231 are both curved reflective surfaces, and the first reflective surface 201 and the second reflective surface 231 are both curved toward each other. In this way, the dimming accessory 2 has a certain light-expanding effect. While adjusting the high-angle lighting to the low-angle lighting, the dimming accessory 2 can also expand the lighting range of the lighting device 1000 to a certain extent. Thus, the lighting device 1000 can have a stronger local lighting effect in the industrial vision system and is more suitable for application scenarios such as size measurement, object recognition and positioning.

[0075] Furthermore, since the medium in the light emission path of the lighting device 1000 has a certain influence on the light emission path of the lighting body 1 (such as the glass protective cover and light-transmitting plate outside the bulb), in order to improve the dimming performance of the dimming accessory 2, the first reflective surface 201 and the second reflective surface 231 in the dimming accessory 2 need to be adapted according to the reflection path of the light of the lighting body 1. In some feasible ways, in order to optimize the illumination imaging effect of the light source and correct some inherent defects of the spherical lens (such as image distortion and light scattering in the edge area), the path of the emitted light from the light source is optimized by designing an aspherical lens. Therefore, the curvature data of the first reflective surface 201 and the second reflective surface 231 can be designed accordingly by predicting the light path of the light source in the lighting body 1.

[0076] In one feasible approach, the light path parameters of the illumination subject 1 are obtained by acquiring the geometric parameters of the aspherical optical element. The specific calculation method for the geometric parameters of the aspherical optical element is as follows:

[0077]

[0078]

[0079] Among them, the meanings of the parameters in the formula are as follows:

[0080] Z(r) - The perpendicular distance from the vertex of the aspherical surface to the surface along the radial distance r;

[0081] r - The radial distance from the optical axis to a point on the curved surface (the surface of the optical element), where the optical axis is a reference line in the optical system and usually coincides with the symmetry axis of the optical element;

[0082] c - Curvature;

[0083] R - Radius of curvature;

[0084] k - Conic coefficient;

[0085] α1, α2, α3, α4, …: Higher-order aspherical coefficients, used to describe the small deformation of the aspherical surface relative to the reference quadric surface.

[0086] Specifically, the radius of curvature R is a quantity that describes the degree of curvature of the curved surface (the surface of the optical element) at a certain point. It is a geometric concept used to characterize the curvature of the curved surface at that point. The reciprocal of the radius of curvature is called the curvature, denoted as c. The radius of curvature is very important in optical design because it determines the reflection and refraction behavior of light on the curved surface. The radius of curvature R can be obtained through methods such as direct measurement method, geometric measurement method, optical reflection method, etc.

[0087] The conic coefficient k is used to describe the basic shape of the aspherical surface. When k < -1, the aspherical surface is a hyperboloid; when k = -1, the aspherical surface is a paraboloid; when -1 < k < 0, the aspherical surface is an ellipsoid; when k = 0, the aspherical surface is a sphere; when k > 0, the aspherical surface is a flattened ellipsoid. The conic coefficient k is a key parameter used to define the type of quadric surface. By adjusting the value of k, different-shaped curved surfaces can be designed to meet different optical requirements. [[ID=??]]

[0088] The higher-order aspherical coefficients α1, α2, α3, α4, … are used to describe the small deformation of the aspherical surface relative to the reference quadric surface. The specific values of the aspherical coefficients are obtained by optimizing through optical design software to meet specific optical performance requirements, such as minimizing aberration and improving imaging quality.

[0089] In the above formula, the radius of curvature R, curvature c, conic coefficient k, higher-order aspherical coefficients α1, α2, α3, α4, … can be obtained through certain means and methods. Therefore, through the above formula, Z can be calculated by data simulation. (r) It seems there is a missing ID number in the original text for the line starting with "具体地,曲率半径R是描述曲面(光学元件的表面)在某一点处的弯曲程度的量……". I've translated it as best as possible with the given information. If you can correct or clarify the ID number for that line, it would be more accurate.By establishing a one-to-one correspondence between r and the optical element, the point coordinates of the optical element surface relative to the optical axis are obtained, i.e., the shape data of the optical element surface is obtained. Furthermore, based on the shape data and refraction parameters of the optical element surface, the path parameters of the light emitted by the illumination subject 1 are obtained. By combining the path data of the light emitted by the illumination subject 1 and the position data of the illumination target 2000 relative to the illumination subject 1, the emission position of the light emitted by the light source is further derived. Thus, based on the emission position of the emitted light, the position information of different points of the first reflecting surface 201 and the second reflecting surface 231 can be obtained accordingly. Thus, the first reflecting unit 200 and the second reflecting unit 230 are designed accordingly.

[0090] Furthermore, by rationally planning and designing the geometric parameters, relative positional relationship, bending direction, and other characteristics of the first reflective unit 200 and the second reflective unit 230, the dimming capability of the dimming accessory 2 can be rationally optimized, so that the emitted light from the lighting device 1000 can match and illuminate the area where the lighting target 2000 is located.

[0091] Optionally, the curved shapes of the first reflective surface 201 and the second reflective surface 231 can be initially designed based on the light path of the lighting body 1 (which can also be considered as the position of the light source) and the position of the lighting target 2000.

[0092] For specific details, please refer to Figure 3 The embodiments shown should be noted as follows: Figure 3 Since the light source of the illumination subject 1 is located in the acquisition component 11, the position of the acquisition component 11 is regarded as the location of the light source of the illumination subject 1. Therefore, based on the relative position of the acquisition component 11 (the light source of the illumination subject 1) and the illumination target 2000, the initial shape (such as bending direction, bending trend, etc.) of the first reflecting surface 201 and the second reflecting surface 231 can be initially designed. Then, according to the surface design formula of aspherical reflecting surface and free-form reflecting surface in the field of optical illumination, the bending data of the first reflecting surface 201 and the second reflecting surface 231 are optimized to obtain the final bending shape of the first reflecting surface 201 and the second reflecting surface 231.

[0093] Among them, the surface design formulas for aspherical and freeform reflective surfaces in the field of optical lighting are as follows:

[0094] z(r) = \frac{r 2}R+\alpha r 4 +\beta r 6 +\gammar 8 +\dots

[0095] The meanings of each parameter in the formula are as follows:

[0096] r - radial distance of the reflecting surface;

[0097] z(r) - the perpendicular distance from the vertex of the reflecting surface along the radial distance r to the surface;

[0098] R - Radius of curvature at the vertex of the reflecting surface;

[0099] alpha, beta, gamma, ... - aspherical coefficients.

[0100] In the above formula, R, aspheric coefficients alpha, beta, gamma, ... can be manually set by technicians (based on experience and requirements). After setting R, aspheric coefficients alpha, beta, gamma, ..., the unknowns in the formula are z(r) and r. Thus, multiple (r, z(r)) coordinates can be obtained according to the formula. Furthermore, based on multiple (r, z(r)) coordinates, the shape of the reflecting surface can be simulated.

[0101] Furthermore, when the reflection effect of the simulated reflective surface is not ideal, technicians can manually change R, aspherical coefficients \alpha, \beta, \gamma, ... to adjust (r, z(r)) accordingly, thereby simulating a new reflective surface. Technicians can compare the reflection effects of different reflective surfaces and select the best reflective surface as the first reflective surface 201 and the second reflective surface 231. By optimizing the surface data of the first reflective surface 201 and the second reflective surface 231, the dimming performance of the dimming accessory 2 can be improved.

[0102] Since the first dimming component 20 and the second dimming component 23 in the dimming accessory 2 have a certain volume in actual application, their size cannot be infinitely large. Therefore, during the process of simulating the reflective surface, the size of the solidified reflective surface can be limited by limiting the range of values ​​of r. Thus, the volume of the first dimming component 20 used to form the first reflective surface 201 and the second dimming component 23 used to form the second reflective surface 231 can be controlled to meet the size requirements of the solidified dimming accessory 2.

[0103] Optionally, the first reflective surface 201 and / or the second reflective surface 231 are coated with a first reflective layer to increase the reflectivity of the reflective surface and reduce light loss.

[0104] In some embodiments, the dimming accessory 2 can be assembled to the lighting body 1, wherein the first reflective unit 200 can be connected to the lighting body 1 through the first connecting end 202, and the second reflective unit 230 can be connected to the lighting body 1 through the second connecting end 232.

[0105] Furthermore, the lighting body 1 includes a housing 10 and a plurality of light-emitting lamps. The housing 10 includes a light-transmitting plate 100. The plurality of light-emitting lamps are installed in the inner cavity of the housing 10. The working light of the plurality of light-emitting lamps is emitted through the light-transmitting plate 100 to the outer space of the housing 10. The working light of the plurality of light-emitting lamps is combined to form the light of the lighting body 1.

[0106] Both the first connecting end 202 and the second connecting end 232 are connected to the light-transmitting plate 100. Each group of light-emitting lamps is provided with at least one first reflecting unit 200 and at least one second reflecting unit 230. Thus, when any group of light-emitting lamps is in operation, at least one first reflecting unit 200 and at least one second reflecting unit 230 participate in the light adjustment operation. The dimming accessory 2 can control the light of the light source in multiple directions and comprehensively, thereby improving the adaptability of the lighting device 1000 to the application scenarios of industrial vision systems.

[0107] For reference Figures 1 to 3 The outer casing 10 has a light-transmitting surface 101, which is formed in the light-transmitting plate 100. Since the light-emitting lamp group is located in the inner cavity of the outer casing 10, for ease of understanding, the light-transmitting surface 101 is divided into multiple light-emitting areas 102. One light-emitting lamp group corresponds to one light-emitting area 102. Referring to the light trend in the figure, it can be seen that when the lighting body 1 emits light, the light first passes through the first reflecting surface 201 and then through the second reflecting surface 231. After one or more reflections, the light is emitted from the dimming channel 3 to the lighting target 2000.

[0108] Furthermore, the lighting body 1 also includes a data acquisition component 11 (such as a camera, infrared sensor, etc.). The data acquisition component 11 is installed in the inner cavity of the housing 10, and multiple light-emitting lamps are arranged around the outer periphery of the data acquisition component 11. The light-emitting lamps are used to provide the light required by the data acquisition component 11 when performing data acquisition operations, ensuring that the images acquired by the data acquisition component 11 meet the usage standards.

[0109] For easier understanding, please refer to Figure 10 The light-transmitting surface 101 has an image acquisition area 103 corresponding to the acquisition component 11, and multiple light-emitting areas 102 are located on the outer periphery of the image acquisition area 103. This ensures the light intensity of the image acquisition area 103 and provides sufficient brightness in the acquisition field of view of the acquisition component 11.

[0110] When the dimming accessory 2 is assembled on the lighting body 1, the first reflection unit 200 and the second reflection unit 230 are located on the outer periphery of the acquisition component 11. In this way, the light from the lighting device 1000 surrounds the periphery of the acquisition component 11, which can ensure the light intensity of the lighting target 2000 acquired by the acquisition component 11. Moreover, since the first reflection unit 200 and the second reflection unit 230 in the dimming accessory 2 are both set to correspond to the light-emitting lamp group, the lighting intensity of the lighting target 2000 area is the same in all directions in the acquisition field of the acquisition component 11, and will not affect the imaging effect of the image acquired by the acquisition component 11.

[0111] Optionally, you may refer to Figure 3 In the industrial vision system, the distance between the lighting subject 1 and the lighting target 2000 is d1, 90mm≥d2≥110mm. At this time, the angle between the light from the lighting subject 1 and the transparent surface is 83°~86°. After the light is dimmed by the dimming accessory 2, the angle between the light and the transparent surface is 40°~45°. Thus, the image acquired by the acquisition component 11 has a good imaging effect through a conventional lens and a conventional transparent plate.

[0112] Furthermore, the second reflective unit 230 is provided with an avoidance recess 220, which is recessed toward the side where the first reflective unit 200 is located. In this way, the avoidance recess 220 can widen the field of view of the acquisition component 11, and the design of the avoidance recess 220 reduces the obstruction effect of the second reflective unit 230 on the field of view of the acquisition component 11.

[0113] It should be noted that the descriptions of each embodiment in the above embodiments have different emphases. Parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0114] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A dimming accessory, characterized in that, The dimming accessory is used to assemble with the lighting body and adjust the light path of the lighting body, wherein the lighting body has a first direction and a second direction that are perpendicular to each other, and the light path extends along the second direction; The dimming accessories include: A first dimming assembly has a first reflective surface, and at least one end of the first dimming assembly is used to connect to the lighting body. The first dimming assembly includes at least one first reflective unit, the first reflective unit having the first reflective surface, and a first connecting end and a first free end formed on opposite sides of the first reflective surface. The first connecting end is used to connect to the lighting body. Along a first direction of the lighting body, the first free end is farther away from the lighting body relative to the first connecting end. Along a second direction of the lighting body, the line connecting the first connecting end and the first free end forms an angle with the light path of the lighting body. The second dimming component has a second reflective surface, which is at least partially opposite to the first reflective surface, and at least one end of the second dimming component is used to connect to the lighting body; When the first dimming component and the second dimming component are simultaneously assembled on the lighting body, the first dimming component and the second dimming component are separated by a space, and a dimming channel is formed between the first reflective surface and the second reflective surface. After the light emitted by the lighting body enters the dimming channel, it leaves the dimming channel after being reflected once or multiple times by the first reflective surface and the second reflective surface, and is directed toward the lighting target.

2. The dimming accessory as described in claim 1, characterized in that, The second dimming assembly includes at least one second reflective unit, the second reflective unit having a second reflective surface, and a second connecting end and a second free end formed on opposite sides of the second reflective surface. The second connecting end is used to connect to the lighting body, the first connecting end is spaced apart from the second connecting end, and the first free end is spaced apart from the second free end. Along a first direction of the lighting body, the second free end is farther away from the lighting body relative to the second connecting end. Along a second direction of the lighting body, the line connecting the second connecting end and the second free end forms an angle with the light path of the lighting body. When the first dimming component and the second dimming component are simultaneously assembled on the lighting body, both the first reflective unit and the second reflective unit are connected to the lighting body. Along the second direction, the first reflective surface and the second reflective surface are spaced apart and arranged opposite to each other, and the dimming channel is formed between the first reflective surface and the second reflective surface.

3. The dimming accessory as described in claim 2, characterized in that, Along the second direction of the lighting body, the second free end is farther away from the first reflective unit relative to the second connecting end, and the first free end is closer to the second reflective unit relative to the first connecting end.

4. The dimming accessory as described in claim 2, characterized in that, The second reflective unit is multiple, and the second dimming component also includes a second mounting base for connecting the lighting body; the second mounting base is provided with a clearance through hole, and the second connection ends of the multiple second reflective units are all connected to the second mounting base, and the multiple second reflective units are distributed circumferentially along the clearance through hole; When the first dimming component and the second dimming component are simultaneously assembled on the lighting body, the clearance through hole connects to the dimming channel, the first connecting end connects to the lighting body, and at least a portion of the first reflective surface is exposed through the clearance through hole.

5. The dimming accessory as described in claim 4, characterized in that, The number of the first reflective units is multiple, and the first dimming component further includes a first mounting base, which is used to connect to the second mounting base; wherein, one first reflective unit corresponds to one second reflective unit; When the first dimming component and the second dimming component are simultaneously assembled on the lighting body, the first mounting base blocks at least part of the through hole. On the outer periphery of the first mounting base, a first reflective unit and a second reflective unit constrain and form the dimming channel. The first connection ends of a plurality of first reflective units are all connected to the first mounting base, and the plurality of first reflective units are distributed along the circumference of the first mounting base.

6. The dimming accessory as described in claim 5, characterized in that, The second dimming assembly further includes a reinforcing rib located on the side of the second reflective unit facing away from the second reflective surface, and the opposite ends of the reinforcing rib are respectively connected to the second mounting base and the second reflective unit; and / or, The first reflective unit is interconnected with the first mounting base and forms an integral structure; and / or, The second reflective unit is interconnected with the second mounting base and forms an integral structure.

7. The dimming accessory as described in any one of claims 1 to 6, characterized in that, Both the first and second reflective surfaces are curved reflective surfaces, and both the first and second reflective surfaces are curved in a direction away from each other. And / or, the first reflective surface is coated with a first reflective layer; And / or, the second reflective surface is coated with a second reflective layer.

8. A lighting device, characterized in that, The lighting device includes: lighting subject; The dimming accessory as described in any one of claims 1-7 is capable of being assembled onto the lighting body, wherein the first reflective unit is capable of being connected to the lighting body via a first connecting end, and the second reflective unit of the second dimming assembly is capable of being connected to the lighting body via a second connecting end.

9. The lighting device as claimed in claim 8, characterized in that, The lighting body includes a housing and multiple light-emitting lamp groups. The housing includes a light-transmitting plate, and the multiple light-emitting lamp groups are installed in the inner cavity of the housing. The working light of the multiple light-emitting lamp groups is emitted to the outer space of the housing through the light-transmitting plate. Both the first connecting end and the second connecting end are connected to the light-transmitting plate, and each group of light-emitting lamps is provided with at least one first reflective unit and at least one second reflective unit.

10. The lighting device as claimed in claim 9, characterized in that, The lighting body also includes a collection component, which is installed in the inner cavity of the housing, and a plurality of light-emitting lamp groups are arranged around the outer periphery of the collection component; When the dimming accessory is assembled on the lighting body, the first reflective unit and the second reflective unit are located on the outer periphery of the acquisition component.

11. The lighting device as claimed in claim 10, characterized in that, The first reflective unit is provided with a relief recess, which is recessed toward the side where the first reflective unit is located.

12. An industrial vision system, characterized in that, Includes the lighting device as described in any one of claims 8-11.

Images