Dimming accessory, lighting device and industrial vision system

Abstract

The invention discloses a dimming accessory, a lighting device and an industrial visual system.The dimming accessory is used for being assembled on a lighting body and adjusting the light path of the lighting body, the dimming accessory comprises a first dimming assembly and a second dimming assembly, the first dimming assembly is provided with a first reflecting surface, and the second dimming assembly is provided with a second reflecting surface; at least one end of the first dimming assembly is used for being connected to an illumination body. The second dimming assembly is provided with a second reflecting surface, the second reflecting surface is at least partially opposite to the first reflecting surface, and at least one end of the second dimming assembly is used for being connected to the lighting main body; when the first dimming assembly and the second dimming assembly are assembled on the lighting main body at the same time, the first dimming assembly and the second dimming assembly are arranged in a spaced mode, a dimming channel is formed between the first reflecting surface and the second reflecting surface, and light emitted by the lighting main body enters the dimming channel and then enters the lighting main body. After being reflected by the first reflecting surface and the second reflecting surface for one or more times in sequence, the light leaves the dimming channel and is emitted to a lighting target.

Description

Technical Field

[0001] The present invention relates to the field of industrial vision technology, and in particular to a dimming accessory, a lighting device and an industrial vision system. Background Art

[0002] In the field of industrial vision, high lighting requirements are placed on illumination imaging. However, in some application scenarios, the lighting effect cannot meet the actual lighting imaging requirements of the scene, resulting in poor imaging in the application scenario, which seriously affects the actual operating effect of the industrial vision system in the scenario. Summary of the invention

[0003] In view of this, the present 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 to improve the above-mentioned technical problems.

[0004] A first aspect of an embodiment of the present application provides a dimming accessory, which is used to be assembled on 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 reflecting 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 reflecting surface, the second reflecting surface is at least partially arranged opposite to the first reflecting 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 on the lighting body at the same time, the first dimming component and the second dimming component are arranged apart, and a dimming channel is formed between the first reflecting surface and the second reflecting surface. After the light emitted by the lighting body enters the dimming channel, it is reflected by the first reflecting surface and the second reflecting surface once or multiple times in sequence, and then leaves the dimming channel and is emitted to the lighting target.

[0005] Dimming accessories are equivalent to increasing the application scope of lighting devices. In industrial vision systems, there is no need to replace the lighting body of the lighting device. The lighting device can be matched to more application scenarios of the industrial vision system simply by choosing whether to equip it with dimming accessories. There is no need to replace the overall structure of the lighting device in the industrial vision system, thereby expanding the application scenarios and system costs of the industrial vision system.

[0006] A second aspect of an embodiment of the present application provides a lighting device, which includes a lighting body and the dimming accessory of the first aspect of the embodiment of the present application, and the dimming accessory can be assembled on the lighting body, wherein the first reflecting unit can be connected to the lighting body through the first connecting end, and the second reflecting unit can be connected to the lighting body through the second connecting end.

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

[0008] Since the beneficial effects of the embodiments of the second and third aspects of the present application are derived from the embodiments of the first aspect of the present application, for the main beneficial effects of the embodiments of the second and third aspects of the present application, please refer to the beneficial effects of the embodiments of the first aspect of the present application, and will not be repeated here.

[0009] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the following specifically cites the embodiments of the present application and describes them in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 This is a schematic diagram of the structure of the lighting device in the present application in an assembled state;

[0012] Figure 2 for Figure 1 Exploded diagram of

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

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

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

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

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

[0018] Figure 8 for Figure 7 Cross-section at AA in the middle;

[0019] Fig. 9 is a front view of the first dimming component;

[0020] Fig.10 It is a structural schematic diagram of the lighting subject.

[0021] Figure numerals: 1000-illumination device, 2000-illumination target, 1-illumination body, 10-housing, 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 reflection unit, 201-first reflection surface, 202-first connection end, 203-first free end, 210-first mounting seat, 220-avoidance recess, 23-second dimming component, 230-second reflection unit, 231-second reflection surface, 232-second connection end, 233-second free end, 240-second mounting seat, 250-reinforcement rib, 211-avoidance through hole, 3-dimming channel;

[0022] Z-first direction, Y-second direction. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application is clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0024] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meaning as understood by a person of ordinary skill in the field to which this application belongs. The words "one", "an" or "the" and the like used in this application do not indicate a quantitative limitation, but are only used to indicate the presence of at least one. The words "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] Industrial vision technology is an automated detection and identification method that combines computer vision, image processing, and optical imaging technologies, and is widely used in the field of industrial production. It simulates human visual functions, uses optical equipment (such as cameras, lenses, light sources, etc.) to obtain image information of objects, and then analyzes and processes the images through image processing algorithms, thereby realizing the functions of feature detection, size measurement, defect detection, object recognition, and positioning of objects. Industrial vision technology is an important part of modern industrial automation and intelligent manufacturing. With the continuous development of technology, its application scope and market size are also expanding.

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

[0028] There are many application scenarios for industrial vision technology, such as quality inspection, dimension measurement, object positioning and identification, character recognition and logistics sorting. Industrial vision technology can be customized and optimized according to different application scenarios and needs. In the process of using this technology, there is no need for a robotic arm to clamp and move the object to be measured to view the characteristic information on the object (such as size, scratches, text information on the object, etc.), which avoids damage to the object caused by the robotic arm. In addition, due to the small influence of human factors, the hardware can run stably for a long time, achieving high-precision measurement while meeting the needs of high-speed production lines.

[0029] The following is a brief introduction to some application scenarios. The quality inspection scenario is used to detect scratches, cracks, holes and other defects on the product surface to improve product quality and production efficiency; the dimension measurement scenario is to perform high-precision measurement of the dimensions of parts, such as length, width, diameter, etc., to ensure that the product meets the design requirements; the object positioning and recognition scenario is used on the automated assembly line to identify and locate parts and guide robots to perform precise grasping and assembly; the character recognition scenario is used to identify information such as labels, barcodes, characters, etc. on the product to achieve product traceability and management; the logistics sorting scenario is used in the logistics field to identify and classify packages and improve sorting efficiency.

[0030] In industrial vision systems, lighting devices are required to illuminate the target so that the acquisition components in the industrial vision system can collect relevant information data. However, due to different application scenarios, the position where the lighting device should illuminate the target will be different. For example, when the application scenario is quality inspection, the lighting device needs to provide low-angle lighting to clearly illuminate the scratches, cracks, etc. of the target. At this time, the focus is on the collection of local features of the target, and low-angle lighting may cause shadows on the target due to the position of the lighting device, which is not suitable for dimensional measurement scenarios. At this time, the lighting angle of the lighting device needs to be adjusted to meet the dimensional measurement scenario requirements. Therefore, there is a need for a lighting device that can perform dimming operations so that the lighting device can be applied to a variety of application scenarios and expand the scope of application of the lighting device.

[0031] The following will be combined with the attached examples of the present application Figure 1 -Attached Fig.10 , each technical solution in the embodiment of the present application is described clearly and completely, wherein the coordinate direction in each drawing corresponds to the geometric direction of the lighting subject 1, that is, the Z direction in the drawing represents the height direction of the lighting subject 1, and the Y direction in the drawing represents the width direction of the lighting subject 1. For the description of the geometric direction of the local structure, please refer to the direction of the lighting subject 1.

[0032] Please refer to Figures 1 to 3 The present 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 assembled 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 accordingly, so that the lighting of the lighting device 1000 can meet the application scenario of the industrial vision system.

[0034] The dimming accessory 2 includes a first dimming component 20 having 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 , and 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 arranged 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. After being reflected by the first reflective surface 201, the light path of the lighting body 1 is further changed by the reflection effect 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 arranged apart from each other, and a dimming channel 3 is formed between the first reflecting surface 201 and the second reflecting surface 231. After the light emitted by the lighting body 1 enters the dimming channel 3, it is reflected once or multiple times by the first reflecting surface 201 and the second reflecting surface 231 in sequence, and then leaves the dimming channel 3 and is emitted toward the lighting target 2000.

[0037] The dimming accessory 2 provided in the present application can be assembled on the lighting body 1. When the industrial vision system needs to switch the application scene, the user can change the light path of the lighting body 1 by assembling the dimming accessory 2, thereby adjusting the actual illumination range of the lighting device 1000, so that the illumination condition of the lighting device 1000 matches the actual application scene of the industrial vision system. It should be mentioned that when the illumination range of the lighting device 1000 matches the actual application scene 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, at this time, there is no need to assemble the dimming accessory 2 on the lighting body 1.

[0038] To sum up, the dimming accessory 2 can change the light path of the lighting body 1, so that the lighting device 1000 can change the lighting range. When the lighting device 1000 needs to match different application scenarios of industrial vision systems, the user can assemble the dimming accessory 2 on the lighting body 1 so that the lighting range of the lighting device 1000 can match the lighting requirements of the application scenarios of the industrial vision system.

[0039] In short, the dimming accessory 2 is equivalent to increasing the application scope of the lighting device 1000. In the industrial vision system, the lighting device 1000 does not need to replace the lighting body 1. The lighting device 1000 can be matched with more application scenarios of the industrial vision system only by choosing whether to equip the dimming accessory 2, without replacing the overall structure of the lighting device 1000 in the industrial vision system, thereby expanding the application scenarios and system costs of the industrial vision system.

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

[0041] In some embodiments, the dimming accessory 2 is of universal size, that is, 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 achieve a change in the lighting route of the lighting subject 1. In this way, although multiple lighting devices 1000 require multiple lighting subjects 1, the same dimming accessory 2 can be used by staggering the use time of the dimming accessory 2, thereby reducing the cost of the lighting device 1000 to a certain extent.

[0042] Can be combined with reference Figures 6 to 9 Furthermore, the lighting body 1 has a first direction Z and a second direction Y which are arranged perpendicular to each other, and the light path extends along the second direction Y, wherein the first direction Z can refer to the height direction of the lighting body 1, and the second direction Y can refer to the width direction of the lighting body 1.

[0043] The first dimming component 20 includes at least one first reflecting unit 200, which is used to change the light path of the lighting body 1. The first reflecting unit 200 has a first reflecting surface 201, and a first connecting end 202 and a first free end 203 formed on opposite sides of the first reflecting surface 201. The first connecting end 202 is used to connect to the lighting body 1 so that a connection relationship is formed between the first reflecting 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, so that the first reflecting unit 200 is arranged in an inclined state relative to the lighting body 1. When the light of the lighting body 1 is irradiated to 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-mentioned embodiment, since the first reflecting unit 200 is arranged in an inclined state relative to the lighting body 1, the first reflecting unit 200 has a certain projection area on the light-transmitting surface 101 of the lighting body 1 in the width direction of the lighting body 1. Therefore, no matter whether the light path of the lighting body 1 and the width direction of the lighting body 1 are arranged at an angle, at least part of the light path of the lighting body 1 can be irradiated to the first reflecting surface 201, thereby realizing the change of the light path.

[0046] Can be combined with reference Figure 4 and Figure 5 Furthermore, the second dimming component 23 includes at least one second reflecting unit 230, and the second reflecting unit 230 is used to further change the light path of the lighting subject 1.

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

[0048] When the dimming accessory 2 is assembled, the first connection end 202 is spaced apart from the second connection 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 reflecting surface 201 and the second reflecting 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 tilted relative to the lighting body 1. When the light of the lighting body 1 can be 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 reflecting unit 200 and the second reflecting unit 230 are both connected to the lighting body 1, and along the second direction Y, the first reflecting surface 201 and the second reflecting surface 231 are spaced apart and arranged opposite to each other, and a dimming channel 3 is formed between the first reflecting surface 201 and the second reflecting surface 231.

[0051] In the above-mentioned embodiment, the second reflection unit 230 is arranged in an inclined state relative to the lighting body 1, and the second free end 233 and the first free end 203 are spaced apart, and the second connection end 232 and the first connection end 202 are spaced apart. In this way, a dimming channel 3 can be naturally formed between the first reflection unit 200 and the second reflection unit 230 through the connection position, and there is no need to additionally open a light inlet to connect the dimming channel 3. Therefore, the light path of the lighting body 1 can enter the dimming channel 3 and then leave the dimming channel 3 after being adjusted by one or more reflections on the first reflection surface 201 and the second reflection surface 231 in sequence.

[0052] Furthermore, along the second direction Y of the lighting body 1, the second free end 233 is away from the first reflecting unit 200 relative to the second connecting end 232, and the first free end 203 is close to the second reflecting unit 230 relative to the first connecting end 202. In this way, the first reflecting unit 200 is located on the inner side of the second reflecting unit 230. At this time, the light path of the lighting body 1 is adjusted through the reflection of the first reflecting unit 200 and the second reflecting unit 230, so that the lighting device 1000 can be adjusted from high-angle lighting to low-angle lighting, and the original lighting range of the lighting device 1000 is changed, so that the lighting device 1000 can be adapted to application scenarios such as quality inspection and character recognition.

[0053] First of all, it is important to understand that high-angle lighting refers to a lighting method in which the angle between the light emitted by the light source and the surface of the object being measured is greater than 45°. In other words, at this time, it can be considered that the final lighting angle of the light source is higher; low-angle lighting refers to a lighting method in which the angle between the light emitted by the light source and the surface of the object being measured is less than 45°. In other words, at this time, it can be considered that the final lighting angle of the light source is lower.

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

[0055] Specifically, Figure 3 , when the initial light of the light source is emitted along the second direction Y in the figure, the angle α between the light illuminating the subject 1 (which can also be considered as the initial light of the light source) and the light-transmitting surface 101 is 1 , α 2 Greater than 45°, if the lighting body 1 is not equipped with the aforementioned dimming accessory 2, the emitted light of the light source is the light of the lighting body 1. At this time, the final lighting angle of the light source is high, and the lighting device 1000 is in a high-angle lighting state.

[0056] When the dimming accessory 2 is mounted on the lighting body 1, the light of the lighting body 1 (which can also be considered as the initial light of the light source) first moves to the first reflection surface 201 after being emitted, and is reflected to the second reflection surface 231 by the first reflection surface 201, and then is reflected by the second reflection surface 231, and then is emitted out of the dimming channel 3. At this time, the emission direction of the light emitted by the light source is changed compared with the emission direction of the light of the lighting body 1. Among them, the first reflection surface 201 is used to reflect the light of the lighting body 1 to the second reflection surface 231, so that the emission position of the light emitted by the light source is located at the second reflection surface 231, thereby realizing the change of the emission position of the light emitted by the light source.

[0057] As above, in Figure 3 In the illustrated embodiment, the light of the lighting subject 1 is reflected by the dimming accessory 2, and the emission position of the light emitted from the light source is changed from the original surface of the lighting subject 1 to the second reflecting surface 231 located on 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 is changed accordingly, that is, after the dimming accessory 2 is added to the lighting subject 1, the emission position of the light emitted from the light source is changed, so that the dimming accessory 2 realizes the path adjustment of the light of the lighting subject 1.

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

[0059] In other embodiments, the ability of the dimming accessory to adjust the light of the lighting subject 1 can be further optimized, and the lighting range and specific lighting effect of the lighting device 1000 can be further changed by changing the relative tilt state (towards or away from each other) and tilt angle (relative to the surface of the lighting subject 1) of the first reflecting unit 200 and the second reflecting unit 230, the relative spacing between the first reflecting unit 200 and the second reflecting unit 230, the shape (such as curves, waves, etc.) of the first reflecting unit 200 and / or the second reflecting unit 230, etc.

[0060] Optionally, there are multiple second reflection units 230, and the second dimming component 23 also includes a second mounting base 240, which is used to connect to the lighting body 1. The second mounting base 240 is provided with an avoidance through hole 211, and the second connection ends 232 of the multiple second reflection units 230 are all connected to the second mounting base 240. The multiple second reflection units 230 are distributed along the circumference of the avoidance through hole 211. When the first dimming component 20 and the second dimming component 23 are simultaneously assembled on the lighting body 1, the avoidance through hole 211 is connected to the dimming channel 3 so that the light of the lighting body 1 can enter the dimming channel 3.

[0061] The first connection end 202 is connected to the lighting body 1 , and at least a portion of the first reflection surface 201 is exposed from the avoidance through hole 211 , so that the light of the lighting body 1 can irradiate the first reflection surface 201 .

[0062] By providing a second mounting base 240, the second dimming component 23 can be pre-installed before being assembled on the lighting body 1, so that multiple second reflection units 230 are connected to the second mounting base 240, and then the second reflection unit 230 is assembled to the lighting body 1 by assembling the second mounting base 240 on the lighting body 1. In this way, not only can the complexity of connection between the second dimming component 23 and the lighting body 1 be reduced to a certain extent, but also the structural interference between the two when the second dimming component 23 is connected to the lighting body 1 can be reduced, so that the user can assemble the second dimming component 23 on the lighting body 1 more quickly and conveniently, reducing the installation difficulty for the user.

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

[0064] Furthermore, the second reflection unit 230 is connected to the second mounting base 240 through the second connecting end 232 so as to be connected to the lighting body 1. In this way, the lighting body 1 only needs to provide a connecting structure (such as a screw hole, etc.) for the second mounting base 240, thereby avoiding the lighting body 1 from affecting its original structure due to the need to provide multiple connecting structures (such as screw holes, etc.), and to a certain extent reducing the influence of the connecting structure (such as screw holes, etc.) on the lighting effect of the lighting body 1.

[0065] Furthermore, there are multiple first reflection units 200 , and the first dimming component 20 also includes a first mounting base 210 , and the first mounting base 210 is used to connect to the second mounting base 240 ; wherein, one first reflection unit 200 is arranged corresponding to one second reflection 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 avoidance through hole 211, and on the outer peripheral side of the first mounting base 210, a first reflecting unit 200 and a second reflecting unit 230 constrain to form a dimming channel 3, so that the first dimming component 20 and the second dimming component 23 can perform multi-directional light path adjustment.

[0067] The first connection ends 202 of multiple first reflection units 200 are all connected to the first mounting base 210, and the multiple first reflection units 200 are distributed along the circumference of the first mounting base 210. Therefore, 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, and the first dimming component 20 can adjust the light of the lighting device 1000 in multiple directions, thereby enhancing the light adjustment ability of the dimming accessory 2.

[0068] In addition, by providing a first mounting seat 210, the dimming accessory 2 can be pre-installed before being assembled on the lighting body 1, so that multiple first reflection units 200 are connected to the first mounting seat 210, and then the first reflection unit 200 is assembled to the lighting body 1 through the connection between the first mounting seat 210 and the second mounting seat 240. 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 also the structural interference when the dimming accessory 2 is connected to the lighting body 1 can be reduced, so that the user can assemble the dimming accessory 2 to the lighting body 1 more quickly and conveniently, reducing the installation difficulty for the user.

[0069] In other aspects, due to the provision of multiple first mounting seats 210 and second mounting seats 240, and the first mounting seat 210 can be connected to the lighting body 1 through the second mounting seat 240, the lighting body 1 only needs to provide a connecting structure of the second mounting seat 240, thereby avoiding the lighting body 1 from affecting its original structure due to the need to provide multiple connecting structures (such as screw holes, etc.), and to a certain extent reducing the influence of the connecting structure (such as screw holes, etc.) on the lighting effect of the lighting body 1.

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

[0071] Optionally, the first reflection unit 200 is interconnected with the first mounting seat 210 to form an integrated structure, and / or the second reflection unit 230 is interconnected with the second mounting seat 240 to form an integrated structure. In this way, the assembly steps of the dimming accessory 2 are further reduced, the installation difficulty of the user is reduced, and the user can quickly and conveniently assemble the dimming accessory 2 to the lighting body 1.

[0072] For reference Figures 1 to 3 In some embodiments, the first reflecting surface 201 and the second reflecting surface 231 are both curved reflecting surfaces, and the first reflecting surface 201 and the second reflecting surface 231 are curved in a direction away from each other. Thus, compared with a flat surface, the curved first reflecting surface 201 and the second reflecting surface 231 have a larger reflective area, thereby enhancing 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 to each other, 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 be more suitable for application scenarios such as quality inspection and character recognition.

[0074] In some embodiments, the first reflecting surface 201 and the second reflecting surface 231 are both curved reflecting surfaces, and the first reflecting surface 201 and the second reflecting surface 231 are both curved toward each other. In this way, the dimming accessory 2 has a certain light expansion effect. While the dimming accessory 2 adjusts the high-angle lighting to low-angle lighting, it can also expand the lighting range of the lighting device 1000 to a certain extent. Therefore, 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 dimension 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 emission path of the light of the lighting subject 1 (such as the glass protective cover outside the bulb, the light-transmitting plate, etc.), therefore, in order to improve the dimming performance of the dimming accessory 2, the first reflection surface 201 and the second reflection surface 231 in the dimming accessory 2 need to be adaptively adjusted according to the reflection path of the light of the lighting subject 1. In some feasible methods, in order to optimize the illumination and 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 outgoing light of the light source is optimized by designing an aspherical lens. Therefore, the light path of the light source in the lighting subject 1 can be estimated, and the curvature data of the first reflection surface 201 and the second reflection surface 231 can be designed accordingly.

[0076] In an implementable manner, by obtaining the geometric parameters of the aspherical optical element, the light path parameters of the light source of the illumination body 1 are obtained. 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 vertical 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). The optical axis is a reference line in the optical system and usually coincides with the axis of symmetry of the optical element;

[0082] c - Curvature;

[0083] R - Radius of curvature;

[0084] k - Conic coefficient;

[0085] α 1 、α 2 、α 3 、α 4 、…: 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 by 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 prolate 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.

[0088] Higher-order aspherical coefficient α 1 、α 2 、α 3 、α 4, ...are used to describe the slight deformation of the aspheric surface relative to the reference quadratic surface. The specific value of the aspheric coefficient is obtained by optimizing the optical design software to meet specific optical performance requirements, such as minimizing aberrations and improving imaging quality.

[0089] In the above formula, the radius of curvature R, the curvature c, the cone coefficient k, the high-order aspheric coefficient α 1 , α 2 , α 3 , α 4 , ... can be obtained through certain means and methods, so Z can be calculated by data simulation through the above formula (r) A one-to-one correspondence between and r is obtained, thereby obtaining the point coordinates of the optical element surface relative to the optical axis, that is, obtaining the shape data of the optical element surface, and further, based on the shape data and refraction parameters of the optical element surface, further obtaining the path parameters of the light emitted by the lighting subject 1, and through the path data of the light emitted by the lighting subject 1 and the position data of the lighting target 2000 relative to the lighting subject 1, further combining and deducing the emission position of the light emitted by the light source, thereby, 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 correspondingly obtained, thereby, the first reflecting unit 200 and the second reflecting unit 230 are correspondingly designed.

[0090] Furthermore, by rationally planning and designing the geometric parameters, relative position relationship, bending direction and other features of the first reflection unit 200 and the second reflection unit 230, the dimming capability of the dimming accessory 2 can be rationally optimized so that the outgoing light of the lighting device 1000 can be matched to irradiate the area where the lighting target 2000 is located.

[0091] Optionally, the curved shapes of the first reflecting surface 201 and the second reflecting surface 231 can be preliminarily designed according to the light path of the lighting subject 1 (which can also be considered as the position of the light source) and the position of the lighting target 2000.

[0092] Specifically, please refer to Figure 3 In the embodiment shown, it should be noted that Figure 3 Since the light source of the lighting subject 1 is located in the collection component 11, the position of the collection component 11 is regarded as the position of the light source of the lighting subject 1. Therefore, according to the relative positions of the collection component 11 (the light source of the lighting subject 1) and the lighting target 2000, the initial shapes (such as bending direction, bending trend, etc.) of the first reflection surface 201 and the second reflection surface 231 can be preliminarily designed. Afterwards, according to the surface design formulas of aspheric reflection surfaces and free-form reflection surfaces in the field of optical lighting, the bending data of the first reflection surface 201 and the second reflection surface 231 are optimized to obtain the final bending shapes of the first reflection surface 201 and the second reflection surface 231.

[0093] Among them, the surface design formulas for aspherical reflective surfaces and free-form reflective surfaces in the field of optical lighting are:

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

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

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

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

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

[0099] \alpha, \beta, \gamma, … - aspheric coefficients.

[0100] In the above formula, R, aspheric coefficients \alpha, \beta, \gamma, ... can be manually set by technical personnel (can be set based on experience and demand). After setting R, aspheric coefficients \alpha, \beta, \gamma, ..., the quantities to be determined in the formula are z(r) and r. Thus, according to the formula, multiple (r, z(r)) coordinates can be obtained. 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 reflection surface is not ideal, the technician can manually change R, aspheric coefficients \alpha, \beta, \gamma,... to adjust (r, z(r)) accordingly to simulate a new reflection surface. The technician can compare the reflection effects of different reflection surfaces and select the best reflection surface as the first reflection surface 201 and the second reflection surface 231. By optimizing the surface data of the first reflection surface 201 and the second reflection surface 231, the dimming performance of the dimming accessory 2 can be increased.

[0102] Among them, since the first dimming component 20 and the second dimming component 23 in the dimming accessory 2 have a certain volume during actual application, their sizes cannot be infinite. Therefore, when the technicians simulate the reflecting surface, they can limit the value range of r to limit the size of the reflecting surface after being materialized. Thus, the volume of the first dimming component 20 used to form the first reflecting surface 201 and the second dimming component 23 used to form the second reflecting surface 231 can be controlled to meet the size requirements of the dimming accessory 2 after being materialized.

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

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

[0105] Furthermore, the lighting body 1 includes an outer shell 10 and a plurality of light-emitting lamp groups, the outer shell 10 includes a light-transmitting plate 100, the plurality of light-emitting lamp groups are installed in the inner cavity of the outer shell 10, the working lights of the plurality of light-emitting lamp groups are emitted to the external space of the outer shell 10 through the light-transmitting plate 100, and the working lights of the plurality of light-emitting lamp groups are aggregated to form the light of the lighting body 1.

[0106] The first connection end 202 and the second connection end 232 are both connected to the light-transmitting plate 100, and a group of light-emitting lamps is correspondingly provided with at least one first reflection unit 200 and at least one second reflection unit 230. Therefore, when any light-emitting lamp group is operating, there is correspondingly at least one first reflection unit 200 and a second reflection unit 230 participating in the light adjustment operation. The dimming accessory 2 can adjust the light of the illumination subject in an all-round and comprehensive manner, thereby improving the adaptability of the lighting device 1000 to the application scenarios of the industrial vision system.

[0107] For reference Figures 1 to 3 The housing 10 has a light-transmitting surface 101, and the light-transmitting surface 101 is formed with a light-transmitting plate 100. Since the light-emitting lamp group is located in the inner cavity of the housing 10, for ease of understanding, the light-transmitting surface 101 is divided into a plurality of light-emitting areas 102, and 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, it is emitted from the dimming channel 3 to the lighting target 2000.

[0108] Furthermore, the lighting body 1 also includes a collection component 11 (such as a camera, an infrared sensor, etc.), which is installed in the inner cavity of the outer shell 10. A plurality of light groups are arranged around the outer periphery of the collection component 11. The light groups are used to provide the light required for the collection component 11 to perform collection operations, thereby ensuring that the images collected by the collection component 11 meet the usage standards.

[0109] For easier understanding, please refer to Fig.10The light-transmitting surface 101 forms an image acquisition area 103 corresponding to the acquisition component 11, and multiple light-emitting areas 102 are located on the periphery of the image acquisition area 103, so as to ensure the light intensity of the image acquisition area 103 and ensure that the acquisition field of view of the acquisition component 11 has sufficient brightness.

[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 peripheral side of the collection component 11. In this way, the light of the lighting device 1000 is surrounded by the surrounding side of the collection component 11, which can ensure the light intensity of the lighting target 2000 collected by the collection component 11. Moreover, since the first reflection unit 200 and the second reflection unit 230 in the dimming accessory 2 are both arranged corresponding to the light-emitting lamp group, in the collection field of view of the collection component 11, the lighting intensity of all directions of the lighting target 2000 area is the same, and will not affect the imaging effect of the image collected by the collection component 11.

[0111] Optionally, 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 of the lighting subject 1 and the transparent surface is 83°~86°, and the angle between the light after dimming by the dimming accessory 2 and the transparent surface is 40°~45°. In this way, through the conventional lens and the conventional transparent plate, the captured image of the acquisition component 11 has a good imaging effect.

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

[0113] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

[0114] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A dimming accessory, characterized in that: The dimming accessory is used to be assembled on the lighting body and adjust the light path of the lighting body; The dimming accessories include: A first dimming component, wherein the first dimming component has a first reflective surface, and at least one end of the first dimming component is used to be connected to the lighting body; A second dimming component, wherein the second dimming component has a second reflecting surface, the second reflecting surface is at least partially arranged opposite to the first reflecting surface, and at least one end of the second dimming component is used to be connected to the lighting body; When the first dimming component and the second dimming component are simultaneously mounted on the lighting body, the first dimming component and the second dimming component are spaced apart from each other, and a dimming channel is formed between the first reflecting surface and the second reflecting surface. After the light emitted by the lighting body enters the dimming channel, it is reflected once or multiple times by the first reflecting surface and the second reflecting surface in sequence, then leaves the dimming channel and is emitted toward the lighting target.

2. The dimming accessory according to claim 1, characterized in that: The lighting body has a first direction and a second direction which are perpendicular to each other, and the light path extends along the second direction; The first dimming component includes at least one first reflecting unit, which has the first reflecting surface, and a first connecting end and a first free end formed on opposite sides of the first reflecting surface, wherein the first connecting end is used to connect to the lighting body; along the first direction of the lighting body, the first free end is away from the lighting body relative to the first connecting end; along the second direction of the lighting body, a line connecting the first connecting end and the first free end forms an angle with the light path of the lighting body.

3. The dimming accessory according to claim 2, characterized in that: The second dimming component includes at least one second reflecting unit, the second reflecting unit has the second reflecting surface, and a second connecting end and a second free end formed on opposite sides of the second reflecting 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 the first direction of the lighting body, the second free end is away from the lighting body relative to the second connecting end; along the second direction of the lighting body, a line connecting the second connecting end and the second free end forms an angle with a light path of the lighting body; When the first dimming component and the second dimming component are simultaneously assembled on the lighting body, the first reflecting unit and the second reflecting unit are both connected to the lighting body, and along the second direction, the first reflecting surface and the second reflecting surface are spaced apart and arranged opposite to each other, and the dimming channel is formed between the first reflecting surface and the second reflecting surface.

4. The dimming accessory according to claim 3, characterized in that: In the second direction along the lighting body, the second free end is farther away from the first reflecting unit than the second connecting end, and the first free end is closer to the second reflecting unit than the first connecting end.

5. The dimming accessory according to claim 3, characterized in that: The number of the second reflective units is multiple, and the second dimming component further includes a second mounting seat, and the second mounting seat is used to connect the lighting body; the second mounting seat is provided with an avoidance through hole, and the second connection ends of the multiple second reflective units are all connected to the second mounting seat, and the multiple second reflective units are distributed along the circumference of the avoidance through hole; When the first dimming component and the second dimming component are simultaneously assembled on the lighting body, the avoidance through hole is connected to the dimming channel, the first connection end is connected to the lighting body, and at least a portion of the first reflecting surface is exposed from the avoidance through hole.

6. The dimming accessory according to claim 5, characterized in that: There are multiple first reflective units, and the first dimming component further includes a first mounting seat, and the first mounting seat is used to connect the second mounting seat; wherein one first reflective unit is corresponding 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 seat blocks at least a portion of the avoidance through hole, and on the outer peripheral side of the first mounting seat, a first reflecting unit and a second reflecting unit constrain to form a dimming channel; the first connecting ends of multiple first reflecting units are all connected to the first mounting seat, and multiple first reflecting units are distributed along the circumference of the first mounting seat.

7. The dimming accessory according to claim 6, characterized in that: The second dimming component further includes a reinforcing rib, the reinforcing rib is located on a side of the second reflecting unit facing away from the second reflecting surface, and opposite ends of the reinforcing rib are respectively connected to the second mounting seat and the second reflecting unit; and / or, The first reflection unit and the first mounting seat are interconnected to form an integrated structure; and / or, The second reflecting unit and the second mounting seat are interconnected to form an integral structure.

8. The dimming accessory according to any one of claims 1 to 7, characterized in that: The first reflecting surface and the second reflecting surface are both curved reflecting surfaces, and the first reflecting surface and the second reflecting surface are both 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 light reflecting layer.

9. A lighting device, characterized in that: The lighting device comprises: lighting subject; The dimming accessory as described in any one of claims 1 to 8 can be assembled on the lighting body, wherein the first reflecting unit can be connected to the lighting body through a first connecting end, and the second reflecting unit can be connected to the lighting body through a second connecting end.

10. The lighting device according to claim 9, characterized in that: The lighting body comprises a housing and a plurality of light emitting lamp groups, the housing comprises a light-transmitting plate, the plurality of light emitting lamp groups are installed in the inner cavity of the housing, and the operating lights of the plurality of light emitting lamp groups are emitted to the external space of the housing through the light-transmitting plate; The first connection end and the second connection end are both connected to the light-transmitting plate, and a group of the light-emitting lamp groups is correspondingly provided with at least one first reflection unit and at least one second reflection unit.

11. The lighting device according to claim 10, characterized in that: The lighting body further comprises a collection component, the collection component is installed in the inner cavity of the shell, and the 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 reflecting unit and the second reflecting unit are located on the outer peripheral side of the collecting component.

12. The lighting device according to claim 11, characterized in that: The first reflecting unit is provided with an avoidance recess, and the avoidance recess is recessed toward the side where the first reflecting unit is located.

13. An industrial vision system, characterized in that: Comprising the lighting device as described in any one of claims 9 to 12.

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