A lighting device for curved glass inspection machine

Abstract

The present invention discloses a lighting device for a curved glass inspection machine, comprising: a first light source assembly, arranged on one side of the curved glass, the first light source assembly comprising: at least one light emitting body; at least one reflective plate, the reflective plate having a plurality of reflective areas, the plurality of reflective areas being arranged in an arc shape; a second light source assembly, arranged on a side of the curved glass away from the first light source assembly. In the present invention, a first light source assembly and a second light source assembly are provided, and are respectively located on opposite sides of the curved glass to provide light in different paths and directions, so that the curved glass has more comprehensive illumination during the inspection process; at the same time, a plurality of reflective areas are provided in the first light source assembly, and the plurality of reflective areas are arranged in an arc shape, and each reflective area comprises a first reflective surface and a second reflective surface, so that after the light is reflected by the reflective area, it can form reflected light of more angles to provide illumination of more angles.

Description

Technical Field

[0001] The present invention relates to the technical field of glass detection equipment, and in particular to a lighting device used in a curved glass detection machine. Background Art

[0002] Curved glass needs to be inspected by a testing machine before leaving the factory to observe whether there are scratches or other damages on its appearance. The testing machine generally uses a collection camera to collect the appearance of the curved glass. During the collection process, multi-angle light paths need to be provided to illuminate the curved glass to ensure that nothing is missed.

[0003] However, existing inspection machines can generally only provide more than ten light sources at different angles on a single path. Since the surface of curved glass has a certain curvature, more than ten light sources on a single path cannot provide more comprehensive lighting conditions. During the inspection process, the acquisition camera cannot capture damage in some insufficiently illuminated areas on the curved glass, resulting in omissions. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a lighting device for a curved glass inspection machine, so as to solve the problems in the prior art such as omissions in inspection caused by insufficient lighting angles and paths.

[0005] The technical solution adopted by the present invention to solve the technical problem is a lighting device for a curved glass inspection machine, comprising:

[0006] A first light source assembly is arranged on one side of the curved glass, the first light source assembly comprising: at least one light emitting body; at least one reflective plate, the reflective plate having a plurality of reflective areas, the plurality of reflective areas being arranged in an arc shape;

[0007] The second light source assembly is arranged on a side of the curved glass away from the first light source assembly.

[0008] Preferably, the first light source assembly includes two reflective plates and two luminous bodies, a gap for light transmission is provided between the two luminous bodies, and the two reflective plates are symmetrical about the gap.

[0009] Preferably, each of the reflection plates is provided with 14 reflection areas, and the light-emitting body includes a plurality of lamp beads.

[0010] Preferably, the reflection area includes a plurality of first reflection surfaces and a plurality of second reflection surfaces, one second reflection surface is arranged between any two adjacent first reflection surfaces, and one first reflection surface is arranged between any two adjacent second reflection surfaces.

[0011] Preferably, both the first reflecting surface and the second reflecting surface are planes, and an angle between the first reflecting surface and the second reflecting surface is an obtuse angle.

[0012] Preferably, the plurality of reflection areas gradually move closer to the light-emitting body along the curved glass toward the first light source assembly;

[0013] The angle formed by the first reflection surface and the tangent line of the to-be-detected point on the curved glass is a first angle, and a plurality of the first angles gradually decrease from the curved glass toward the first light source assembly;

[0014] The angle formed by the second reflection surface and the tangent line of the to-be-checked point on the curved glass is a second angle, and a plurality of the second angles gradually decrease from the curved glass toward the first light source assembly.

[0015] Preferably, it further comprises a box, wherein the first light source assembly is arranged in the box;

[0016] The box body has an end face and a plurality of side faces, the end face is provided with a notch, and the notch is communicated with the gap for light transmission; an end of the box body away from the end face has an opening facing the curved glass.

[0017] Preferably, the second light source assembly includes two compensation light sources, and the two compensation light sources are respectively arranged on opposite sides of the curved glass.

[0018] Preferably, the two compensation light sources are symmetrical about the curved glass.

[0019] Preferably, the angle formed by the irradiation direction of the compensation light source and the tangent line of the point to be inspected on the curved glass is between 30° and 60°.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] 1. A first light source assembly and a second light source assembly are provided, and are located on opposite sides of the curved glass respectively, to provide light in different paths and directions, so that the curved glass is more fully illuminated during the inspection process, and omissions caused by poor lighting conditions of the inspection machine are reduced.

[0022] 2. A plurality of reflection areas are provided in the first light source assembly, and the plurality of reflection areas are arranged in an arc shape, so that the light can form a plurality of illumination angles after being reflected by the reflection plate, which can meet the requirements of the curved glass for the amount of light at different angles, thereby solving the problem of missed detection by the detection machine due to poor lighting caused by the arc shape of the curved glass.

[0023] 3. Each reflection area includes a first reflection surface and a second reflection surface, so that after the light is reflected by the reflection area, it can form reflected light at more angles to provide lighting at more angles.

[0024] 4. The included angle between the first reflecting surface and the second reflecting surface is set to be an obtuse angle, so that the angle range of the light that can be reflected by the first reflecting surface and the second reflecting surface is larger, and the amount of light that can be reflected is greater, thereby improving the lighting environment of the curved glass.

[0025] 5. Multiple reflection areas gradually approach the light-emitting body along the curved glass toward the first light source component; that is, the multiple reflection areas are arranged in an arc shape, and the distance between the reflection area closer to the light-emitting body and the curved glass is greater, and the distance between the reflection area farther away from the light-emitting body and the curved glass is smaller; the length of the path through which the light emitted from the light-emitting body is reflected from different reflection areas to the curved glass is equal, so that the light beam reaching the curved glass is more uniform.

[0026] 6. Set multiple first angles / second angles along the curved glass toward the first light source component to gradually decrease, so that the closer the first angle / second angle is to the light source, the smaller it is, and the farther the first angle / second angle is from the light source, the larger it is, so that the light reflected by different reflection areas can eventually converge to the point to be tested on the curved glass, and the angles of the converged light are also different, providing sufficient and multi-angle lighting for the detection point.

[0027] 7. Two compensation light sources are set on the side of the curved glass away from the first light source assembly to compensate for the insufficient light transmission of the first light source assembly. The first light source assembly and the second light source assembly provide a total of 30 light sources for the detection machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the structure of the lighting device, curved glass and acquisition camera in the embodiment;

[0029] Figure 2 is a schematic diagram of the structure of the first light source assembly and the curved glass in the embodiment;

[0030] Figure 3 This is a schematic diagram of the structure of the first light source component after removing one side surface in the embodiment;

[0031] Figure 4 is a schematic diagram of the structure of the reflector in the embodiment;

[0032] Figure 5 is a schematic diagram of the structure of the second light source assembly and the curved glass in the embodiment;

[0033] In the figure:

[0034] 100, first light source assembly; 110, housing; 111, end surface; 112, side surface; 113, notch; 120, illuminant; 130, gap; 140, reflector; 141, first reflective surface; 142, second reflective surface;

[0035] 200, second light source assembly; 210, compensation light source;

[0036] 300, curved glass;

[0037] 400. Collection camera. DETAILED DESCRIPTION

[0038] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0039] Please refer to Figure 1-Figure 5 The present invention discloses a lighting device for a curved glass inspection machine, comprising:

[0040] The first light source assembly 100 is disposed on one side of the curved glass 300, and the first light source assembly 100 includes: at least one light emitting body 120; at least one reflective plate 140, the reflective plate 140 has a plurality of reflective areas, and the plurality of reflective areas are arranged in an arc shape;

[0041] The second light source assembly 200 is disposed on a side of the curved glass 300 away from the first light source assembly 100 .

[0042] Specifically, in this embodiment, a first light source assembly 100 and a second light source assembly 200 are provided and are located on opposite sides of the curved glass 300, respectively, to provide light in different paths and directions, so that the curved glass 300 is more comprehensively illuminated during the detection process, thereby reducing omissions caused by poor lighting conditions of the detection machine.

[0043] Furthermore, in the first light source assembly 100, a plurality of reflection areas are provided, and the plurality of reflection areas are arranged in an arc shape, and the light emitted by the light emitter 120 reaches the curved glass 300 after being reflected by the reflection areas. In this process, since the plurality of reflection areas are arranged in an arc shape, the light can be reflected by the reflection plate 140 to form a plurality of illumination light at different angles, which can meet the requirements of the curved glass 300 for the number of light at different angles, thereby solving the problem of poor lighting caused by the curved curved glass 300, which eventually leads to missed detection by the detection machine.

[0044] Preferably, the first light source assembly 100 includes two reflective plates 140 and two luminous bodies 120 , a gap 130 for light transmission is provided between the two luminous bodies 120 , and the two reflective plates 140 are symmetrical about the gap 130 .

[0045] The two luminous bodies 120 are symmetrical about the gap 130, and the two reflective plates 140 are symmetrical about the gap 130, and the gap 130 is used for light transmission. Generally speaking, the acquisition camera 400 is set directly above the gap 130, and the curved glass 300 is detected through the gap 130; that is, the two luminous bodies 120 are symmetrical about the acquisition camera 400, and the two reflective plates 140 are also symmetrical about the acquisition camera 400, so that the entire lighting environment (including parameters such as the angle, path, direction and superposition of the light) is symmetrical about the acquisition camera 400, so that the light received by each part of the curved glass 300 is more uniform, thereby avoiding the phenomenon that different parts of the curved glass 300 are interfered with the detection due to different light conditions.

[0046] Preferably, each of the reflective plates 140 is provided with 14 reflective areas, and the light-emitting body 120 includes a plurality of lamp beads.

[0047] Each reflective plate 140 is provided with 14 reflective areas, and the first light source assembly 100 can provide 28 reflective areas, and these 28 reflective areas are symmetrically arranged to ensure uniform lighting and provide more sufficient light.

[0048] Preferably, the reflection area includes a plurality of first reflection surfaces 141 and a plurality of second reflection surfaces 142, one second reflection surface 142 is arranged between any two adjacent first reflection surfaces 141, and one first reflection surface 141 is arranged between any two adjacent second reflection surfaces 142. In layman's terms, the first reflection surfaces 141 and the second reflection surfaces 142 are arranged one by one in an alternating manner, so that the reflected light of the first reflection surface 141 and the reflected light of the second reflection surface 142 are more uniform.

[0049] Each reflection area includes a first reflection surface 141 and a second reflection surface 142 , so that after being reflected by the reflection area, the light can form reflected light at more angles to provide illumination at more angles.

[0050] Preferably, both the first reflecting surface 141 and the second reflecting surface 142 are planes, and an angle between the first reflecting surface 141 and the second reflecting surface 142 is an obtuse angle.

[0051] It is understandable that if the angle between the first reflective surface 141 and the second reflective surface 142 is a right angle, when the irradiated light is perpendicular to one of the reflective surfaces, the other reflective surface is parallel to the irradiated light and cannot reflect it; similarly, if the angle between the first reflective surface 141 and the second reflective surface 142 is an acute angle, the angle range of the light that can be reflected by the two is smaller. Therefore, the angle between the first reflective surface 141 and the second reflective surface 142 is set to an obtuse angle, so that the angle range of the light that can be reflected by the first reflective surface 141 and the second reflective surface 142 is larger, and the amount of light that can be reflected is greater, thereby improving the lighting environment of the curved glass 300.

[0052] Preferably, the multiple reflection areas gradually approach the light-emitting body 120 along the curved glass 300 toward the first light source assembly 100; that is, the multiple reflection areas are arranged in an arc shape, and the distance between the reflection area closer to the light-emitting body 120 and the curved glass 300 is greater, and the distance between the reflection area farther away from the light-emitting body 120 and the curved glass 300 is smaller; the length of the path through which the light emitted from the light-emitting body 120 is reflected from different reflection areas to the curved glass 300 is equal, so that the light beam reaching the curved glass 300 is more uniform.

[0053] The angle formed by the first reflection surface 141 and the tangent line of the to-be-detected point on the curved glass 300 is a first angle, and the first angles gradually decrease from the curved glass 300 toward the first light source assembly 100;

[0054] The angle formed by the second reflection surface 142 and the tangent line of the to-be-detected point on the curved glass 300 is a second angle, and a plurality of the second angles gradually decrease from the curved glass 300 toward the first light source assembly 100 .

[0055] It should be noted that, during detection, it is necessary to ensure that the tangent direction of the detection point is always perpendicular to the acquisition camera 400 to improve the accuracy of detection.

[0056] like Figure 1-2 As shown, assuming that the acquisition camera 400 is in a vertical direction, the tangent of the detection point is in a horizontal direction, and the lowest point of the curved glass 300 is the detection point. The first angle / second angle described in this embodiment can be understood as the angle between the first reflection surface 141 / second reflection surface 142 and the horizontal plane. The multiple first angles / second angles set along the curved glass 300 toward the first light source assembly 100 gradually decrease, so that the closer the first angle / second angle is to the light source 120, the smaller it is, and the farther the first angle / second angle is from the light source 120, the larger it is, so that the light reflected by different reflection areas can eventually converge to the detection point on the curved glass 300, and the angles of the converged light are also different, providing sufficient and multi-angle lighting for the detection point.

[0057] Furthermore, if Figure 2-3 As shown, the first angle of the first reflective surface 141 closest to the curved glass 300 is close to 90°, while the first angle of the first reflective surface 141 farthest from the curved glass 300 is between 0° and 45°.

[0058] Preferably, it further comprises a box 110, wherein the first light source assembly 100 is disposed in the box 110;

[0059] The box body 110 has an end face 111 and a plurality of side faces 112 . The end face 111 is provided with a notch 113 . The notch 113 is connected to the gap 130 for light transmission. One end of the box body 110 away from the end face 111 has an opening facing the curved glass 300 .

[0060] A box body 110 is provided, and the first light source assembly 100 is provided in the box body 110 , so that the light emitted by the first light source assembly 100 cannot be transmitted out, and finally reaches the curved glass 300 after a series of reflections, so as to provide better lighting conditions.

[0061] At the same time, the box body 110 can also isolate external light to avoid interference from external light.

[0062] Specifically, the detection point, the gap 130 , the notch 113 and the acquisition camera 400 are on the same straight line, so that the acquisition camera 400 can directly and accurately detect the detection point.

[0063] Preferably, the second light source assembly 200 includes two compensation light sources 210 , and the two compensation light sources 210 are respectively disposed on opposite sides of the curved glass 300 .

[0064] It is understandable that the first light source assembly 100 is arranged on the upper surface of the curved glass 300, and most of the light in the first light source assembly 100 will be reflected and transmitted after reaching the upper surface of the curved glass 300. If the amount of transmitted light is insufficient, the lower surface of the curved glass 300 will be insufficiently illuminated, which may easily lead to misjudgment of the detection of the lower surface by the detection machine. Therefore, in this embodiment, two compensation light sources 210 are arranged on the side of the curved glass 300 away from the first light source assembly 100 to compensate for the insufficient color transmission of the first light source assembly 100. The first light source assembly 100 and the second light source assembly 200 provide a total of 30 light sources for the detection machine.

[0065] Preferably, the two compensation light sources 210 are symmetrical about the curved glass 300 .

[0066] The symmetry of the two compensation light sources 210 makes the light from the second light source assembly 200 reaching the curved glass 300 more uniform.

[0067] Preferably, the angle formed by the irradiation direction of the compensation light source 210 and the tangent line of the point to be inspected on the curved glass 300 is between 30° and 60°.

[0068] The angle is set between 30° and 60° so that the compensation light source 210 can reach the collection camera 400 through the gap 130 and the notch 113 after passing through the curved glass 300, while avoiding excessive light beam transmission to cause excessive brightness that makes the collection camera 400 unable to collect.

[0069] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0070] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0071] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A lighting device for a curved glass inspection machine, characterized in that: include: A first light source assembly is arranged on one side of the curved glass, the first light source assembly comprising: at least one light emitting body; at least one reflective plate, the reflective plate having a plurality of reflective areas, the plurality of reflective areas being arranged in an arc shape; A second light source assembly is arranged on a side of the curved glass away from the first light source assembly; The first light source assembly comprises two reflective plates and two illuminants, a gap for light transmission is provided between the two illuminants, and the two reflective plates are symmetrical about the gap; The reflection area includes a plurality of first reflection surfaces and a plurality of second reflection surfaces, one second reflection surface is arranged between any two adjacent first reflection surfaces, and one first reflection surface is arranged between any two adjacent second reflection surfaces; The plurality of reflection areas gradually move closer to the light source along the curved glass toward the first light source component; The angle formed by the first reflection surface and the tangent line of the to-be-detected point on the curved glass is a first angle, and a plurality of the first angles gradually decrease from the curved glass toward the first light source assembly; The angle formed by the second reflection surface and the tangent line of the to-be-checked point on the curved glass is a second angle, and a plurality of the second angles gradually decrease from the curved glass toward the first light source assembly.

2. The lighting device for a curved glass inspection machine according to claim 1, characterized in that: Each of the reflection plates is provided with 14 reflection areas, and the light-emitting body includes a plurality of lamp beads.

3. The lighting device for a curved glass inspection machine according to claim 1, characterized in that: The first reflecting surface and the second reflecting surface are both planes, and an angle between the first reflecting surface and the second reflecting surface is an obtuse angle.

4. The lighting device for a curved glass inspection machine according to claim 1, characterized in that: It also includes a box, in which the first light source assembly is arranged; The box body has an end face and a plurality of side faces, the end face is provided with a notch, and the notch is communicated with the gap for light transmission; an end of the box body away from the end face has an opening facing the curved glass.

5. A lighting device for a curved glass inspection machine according to any one of claims 1 to 4, characterized in that: The second light source assembly includes two compensation light sources, and the two compensation light sources are respectively arranged on opposite sides of the curved glass.

6. The lighting device for a curved glass inspection machine according to claim 5, characterized in that: The two compensation light sources are symmetrical about the curved glass.

7. The lighting device for a curved glass inspection machine according to claim 5, characterized in that: The angle formed by the irradiation direction of the compensation light source and the tangent line of the point to be inspected on the curved glass is between 30° and 60°.

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