Lighting system and automated optical inspection device comprising the same

Abstract

The application discloses a kind of lighting system and the automatic optical detection device comprising the lighting system, it is related to lighting system technical field, lighting system includes: support, adjusting seat mechanism and lighting mechanism, the adjusting seat mechanism includes adjusting seat and rack, the adjusting seat is slidably installed on support, the rack is slidably installed on adjusting seat, the adjusting seat can be lifted along support, and when the adjusting seat is lifted, it can synchronously drive rack reverse movement same distance, the upper end of the rack is fixedly installed with cross bar, one end of the cross bar is rotatably installed with telescopic rod, the lighting mechanism is arranged below adjusting seat, the lighting mechanism includes downlight and oblique illumination piece, the oblique illumination piece is rotatably installed at one side of downlight, and the telescopic end of telescopic rod is fixedly connected with the upper end of oblique illumination piece, the present application is set by overall structure, increase the range of illumination intensity adjustment, improve detection efficiency and accuracy.

Description

Technical Field

[0001] This invention relates to the field of lighting system technology, and more specifically to a lighting system and an automatic optical inspection device including the lighting system. Background Technology

[0002] With the rapid development of display technology, display panels have been widely used in various industries. The quality of display panels directly affects the lifespan of related products. Display panel testing equipment is an essential part of ensuring the quality of display panels. Display panel testing equipment generally includes a camera, lens, and light source. During use, the camera may need to be adjusted in various directions as needed. In this case, for better shooting results, the focal point of the light source should ideally coincide with the shooting point so that the camera can capture the clearest image.

[0003] Chinese Patent CN102679236B discloses an illumination system, an automatic optical inspection device and method including the illumination system. This invention adds a coaxial incident illumination unit to the traditional oblique illumination unit, which illuminates the circuit board under inspection vertically from directly above, realizing normalized imaging display and inspection. However, its drawback is that the incident illumination unit and the oblique illumination unit can only provide constant oblique illumination, and cannot adjust the light intensity of the oblique illumination area according to the product needs. Chinese patent CN216160126U discloses a lighting system and an optical detection device. By setting an incident angle adjustment mechanism, the incident angle adjustment mechanism includes an adjustment plate for connecting a circumferential position adjustment mechanism. The adjustment plate is provided with an arc-shaped slide groove, and an oblique illumination unit is slidably and lockably connected to the arc-shaped slide groove, so that the angle of the oblique illumination unit can be adjusted. The light intensity of the oblique illumination area can be adjusted according to the product needs. However, in this technical solution, only the light intensity of the oblique illumination unit is adjustable, and the light intensity is adjusted by adjusting the light angle of the oblique illumination unit. The adjustment range is very limited. The insufficient adjustment range of the light source increases the energy consumption of the lighting system under the same detection accuracy requirements. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an illumination system and an automatic optical inspection device including the illumination system. Through gear and rack transmission and geometric design, the present invention automatically adjusts the tilt angle of the oblique illumination component when the adjustment seat is raised or lowered, ensuring that the illumination point of the second light-emitting element remains constant. No manual angle calibration is required. The height of both direct and oblique illumination can be adjusted simultaneously, linearly changing the light intensity while maintaining a stable illumination point. This expands the range of light distance adjustment, adapting to the inspection of display panels of different sizes and thicknesses, avoiding uneven illumination caused by angle deviations, and improving inspection efficiency and accuracy.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a lighting system comprising a support column, an adjustment seat mechanism, and a lighting mechanism. The adjustment seat mechanism includes an adjustment seat and a rack. The adjustment seat is slidably mounted on the support column, and the rack is slidably mounted on the adjustment seat. The adjustment seat can rise and fall along the support column, and when the adjustment seat rises and falls, it can synchronously drive the rack to move in the opposite direction by the same distance. A crossbar is fixedly mounted on the upper end of the rack, and a telescopic rod is rotatably mounted on one end of the crossbar. The lighting mechanism is located below the adjustment seat and includes a spot lighting element and an oblique lighting element. The oblique lighting element is rotatably mounted on one side of the spot lighting element, and the telescopic end of the telescopic rod is fixedly connected to the upper end of the oblique lighting element.

[0006] As a further improvement of the present invention, a light-emitting element one is fixedly installed inside the incident lighting component, and a light-emitting element two is fixedly installed inside the oblique lighting component. The horizontal distance from the mounting point of the telescopic rod to the central axis of the light-emitting element one is twice the horizontal distance from the mounting point of the oblique lighting component to the central axis of the light-emitting element one. A display panel to be tested is provided directly below the incident lighting component. The central axis of the light-emitting element one is perpendicular to the display panel to be tested. The vertical distance from the mounting point of the telescopic rod to the display panel to be tested is twice the vertical distance from the mounting point of the oblique lighting component to the display panel to be tested.

[0007] As a further improvement of the present invention, a second gear is rotatably installed inside the adjusting seat, a toothed groove is provided on the support column, one side of the second gear meshes with the toothed groove, the rack is arranged parallel to the support column, the other side of the second gear meshes with the rack, a first motor is fixedly installed on the adjusting seat, and the output end of the first motor is fixedly connected to the shaft of the second gear.

[0008] As a further improvement of the present invention, the lighting mechanism further includes a mounting ring, which is fixedly mounted on the incident lighting element. A first connecting rod is fixedly mounted on the mounting ring, and multiple second connecting rods are slidably mounted on the mounting ring. Multiple oblique lighting elements are provided, and the multiple oblique lighting elements are arranged in a ring array around the mounting ring. One of the oblique lighting elements is rotatably connected to one end of the first connecting rod, and the remaining oblique lighting elements are rotatably connected to one end of the second connecting rod.

[0009] As a further improvement of the present invention, the lighting mechanism further includes a sleeve and a lifting ring. The sleeve is fixedly installed on the upper end of the incident lighting element, the lifting ring is fitted onto the sleeve, and the lifting ring is slidably installed on the bottom of the sleeve. Multiple sliders are slidably installed on the lifting ring, and a linkage rod is rotatably installed on the slider. One end of each linkage rod is rotatably connected to the top of the corresponding oblique lighting element.

[0010] As a further improvement of the present invention, the lighting mechanism further includes a second lifting ring, which is sleeved on the sleeve and slidably mounted on the top of the sleeve. A plurality of second sliders are slidably mounted on the second lifting ring, and the lower ends of the second sliders are movably connected to two second linkage rods. The lower end of one second linkage rod is movably connected to a first connecting rod, and the lower ends of the remaining second linkage rods are movably connected to the corresponding second connecting rods.

[0011] An automatic optical inspection device includes the aforementioned illumination system and a base. A carrier plate is fixedly mounted on the front of the base. The display panel to be inspected is placed on the upper part of the carrier plate. The lower end of the support column is rotatably connected to the base. The rotation axis of the support column is on the same plane as the upper end of the display panel to be inspected.

[0012] As a further improvement of the present invention, the upper end of the base is provided with a fan-shaped groove, the lower end of the support column is inserted into the fan-shaped groove, and the lower end of the support column is provided with a half gear. A gear one is rotatably installed in the base, and the gear one meshes with the half gear. A motor two is fixedly installed on the back of the base, and the output end of the motor two is fixedly connected to the shaft of the gear one.

[0013] As a further improvement of the present invention, a protruding post is fixedly installed at the bottom of the support column, and a guide groove is provided on the side wall of the fan-shaped groove. The protruding post is inserted into the guide groove, the guide groove is arc-shaped, and the center of the guide groove coincides with the rotation axis of the support column.

[0014] As a further improvement of the present invention, an automatic optical inspection device further includes an inspection camera and a lens. The inspection camera is fixedly mounted on an adjustment base, the lens is fixedly mounted below the inspection camera, and the incident illumination element is fixedly mounted at the lower end of the lens. The inspection camera, lens, and incident illumination element are all coaxially arranged.

[0015] The beneficial effects of this invention are:

[0016] 1. This invention, through gear and rack transmission and geometric structure design, allows the oblique illumination component to automatically adjust its tilt angle when the adjustment seat is raised or lowered, ensuring that the illumination point C of the second light-emitting element remains constant. No manual angle calibration is required. The height of the falling and oblique illumination can be adjusted simultaneously, and the light intensity can be linearly changed while maintaining a stable illumination point. This expands the range of light distance adjustment, adapts to the detection of display panels of different sizes and thicknesses, avoids uneven illumination caused by angle deviation, and improves detection efficiency and accuracy.

[0017] 2. In this invention, multiple oblique illumination elements are arranged in a ring array and achieve multi-angle synchronous adjustment through a linkage structure. Oblique light is projected from different directions to cover the entire display panel area, eliminating shadows and blind spots caused by single-direction illumination. The synchronous angle adjustment mechanism ensures that the landing point of each light is constant. The equal spacing adjustment design provides standardized lighting conditions, reducing misjudgments and missed detections caused by uneven lighting. It is suitable for the detection of curved surfaces, uneven textures and small defects, and improves the detection coverage of complex structural surfaces.

[0018] 3. In this invention, the rotating mechanism of the support column drives the lighting system to rotate around point C as the center. The illumination angle is adjusted without changing the distance between the light source and the detection surface. The intensity of the incident and oblique light is controlled simultaneously. The detection camera, lens and incident lighting are coaxially designed to avoid image distortion caused by light path offset. With the adjustable focal length lens, it can adapt to panels with different curvatures. This design stabilizes the focal length and depth of field parameters, ensures the image clarity of the edge area, provides a reliable image basis for automated detection, and improves the accuracy of defect identification and system repeatability. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the lighting system and the automatic optical detection device including the lighting system of the present invention;

[0020] Figure 2 This is a schematic diagram of the planar structure of the lighting system and the automatic optical detection device including the lighting system of the present invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the lighting system of the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the lighting mechanism of the present invention;

[0023] Figure 5 This is a schematic diagram of the disassembled structure of the lighting mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the mounting ring structure of the present invention;

[0025] Figure 7 This is a three-dimensional structural diagram of the base of the present invention;

[0026] Figure 8 This is a cross-sectional structural diagram of the base of the present invention.

[0027] Reference numerals in the attached drawings: 1. Base; 101. Carrier plate; 102. Gear 1; 103. Guide groove; 2. Support column; 201. Protruding column; 3. Adjustment seat mechanism; 301. Adjustment seat; 302. Gear 2; 303. Rack; 304. Crossbar; 305. Telescopic rod; 4. Detection camera; 5. Illumination mechanism; 501. Surface illumination component; 502. Oblique illumination component; 503. Mounting ring; 504. Connecting rod 1; 505. Connecting rod 2; 506. Sleeve; 507. Lifting ring 1; 508. Slider 1; 509. Linkage rod 1; 510. Lifting ring 2; 511. Slider 2; 512. Linkage rod 2; 6. Lens. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. The components of the embodiments of this disclosure described and shown herein can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this disclosure is not intended to limit the scope of the claimed disclosure, but merely represents selected embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0029] refer to Figures 1 to 3 The diagram illustrates a specific embodiment of a lighting system and an automatic optical detection device comprising the lighting system according to the present invention. The lighting system includes a support column 2, an adjustment base mechanism 3, and a lighting mechanism 5. The adjustment base mechanism 3 includes an adjustment seat 301 and a rack 303. The adjustment seat 301 is slidably mounted on the support column 2, and the rack 303 is slidably mounted on the adjustment seat 301. A crossbar 304 is fixedly mounted on the upper end of the rack 303, and a telescopic rod 305 is rotatably mounted on one end of the crossbar 304. The lighting mechanism 5 is located below the adjustment base 301 and includes a direct illumination element 501 and an oblique illumination element 502. The oblique illumination element 502 is rotatably mounted on one side of the direct illumination element 501, and the telescopic end of the telescopic rod 305 is fixedly connected to the upper end of the oblique illumination element 502. A light-emitting element one is fixedly mounted inside the direct illumination element 501, and a light-emitting element two is fixedly mounted inside the oblique illumination element 502. The mounting point of the telescopic rod 305 is (…). Figure 2 The horizontal distance from point A in the middle to the central axis of the light-emitting element is the mounting point of the oblique illumination element 502. Figure 2Point B is twice the horizontal distance from the central axis of the first light-emitting element. A display panel to be tested is positioned directly below the incident illumination element 501. The central axis of the first light-emitting element is perpendicular to the display panel to be tested. The vertical distance from the mounting point of the telescopic rod 305 to the display panel to be tested is twice the vertical distance from the mounting point of the oblique illumination element 502 to the display panel to be tested. The first light-emitting element projects vertical light onto the display panel to be tested, and the second light-emitting element projects oblique light onto the display panel to be tested, with the projection point being point C. In the initial state, if... Figure 2 As shown, a right triangle is constructed with the central axis of the light-emitting element and the perpendicular line from point A to the central axis as the two sides, and the line connecting points A and C as the hypotenuse. Since the adjusting seat 301 can rise and fall along the support column 2, and the adjusting seat 301 can synchronously drive the rack 303 to move in the opposite direction by the same distance when it rises and falls, the distance that point A rises is always twice the distance that point B rises. In traditional production processes, adjusting the distance between the lighting device and the light-receiving point to regulate the light intensity is a common method. However, to ensure that the light-receiving point of the oblique lighting element 502 remains constant, its angle needs to be adjusted, which is time-consuming and labor-intensive. In this invention, when adjusting the height of the lighting mechanism 5, based on the above-mentioned structural setup, points A, B, and C are always on the same straight line. Under the action of the telescopic rod 305, the tilt angle of the oblique lighting element 502 is adaptively adjusted, and the light-receiving point projected by the second light-emitting element on the display panel to be tested remains constant. This facilitates the synchronous adjustment of the light intensity of the direct lighting element 501 and the oblique lighting element 502, and the adjustment range is large, increasing the applicability of this invention. Furthermore, it eliminates the need for manual intervention in angle adjustment, avoiding errors and uncertainties caused by human operation, ensuring that the light-receiving point remains stable, and greatly improving the accuracy and reliability of the adjustment.

[0030] The light-emitting elements 1 and 2 within the incident lighting element 501 and the oblique lighting element 502 both employ electroluminescence technology (such as high-brightness LEDs or organic electroluminescent devices). Their core advantage lies in directly generating light energy by exciting the light-emitting material with an electric field, avoiding the heat loss and low energy conversion efficiency problems of traditional lighting technologies (such as fluorescent lamps). The electro-optical conversion efficiency of electroluminescent elements is more than 40% higher than that of traditional light sources, and they possess the characteristics of low-voltage driving (typical operating voltage 3-24V) and fast response speed (nanosecond level), laying the foundation for energy saving from the very nature of the light source. Combined with the mechanical adjustment structure of the present invention, the energy-saving characteristics of the electroluminescent element are further amplified: when it is necessary to adjust the light intensity, the traditional solution requires increasing the power of the light source or shortening the irradiation distance. However, the present invention uses a rack and pinion transmission mechanism and a telescopic rod linkage structure to enable the oblique illumination element 502 to adaptively adjust the tilt angle with point C as the fixed landing point (without changing the distance between the light source and the detection surface). With the vertical lifting and lowering of the incident illumination element 501, the light intensity of the detection surface can be linearly adjusted by geometric optics principles (such as Lambert's cosine law) while keeping the light source driving current constant.

[0031] In a further embodiment, a second gear 302 is rotatably mounted inside the adjusting seat 301. The support column 2 is provided with a toothed groove. One side of the second gear 302 meshes with the toothed groove. The rack 303 is arranged parallel to the support column 2. The other side of the second gear 302 meshes with the rack 303. A first motor is fixedly mounted on the adjusting seat 301. The output end of the first motor is fixedly connected to the shaft of the second gear 302. When adjusting the height of the lighting mechanism 5, the first motor drives the second gear 302 to rotate. The second gear 302 acts on the toothed groove, causing the adjusting seat 301 to rise. As the adjusting seat 301 rises, the rack 303 also rises relative to the adjusting seat 301 under the action of the second gear 302, ensuring that the height of point A is always twice the height of point B, ensuring that the geometric relationship of points A, B, and C remains unchanged and that they are always on the same straight line. The point of light projected by the second light-emitting element on the display panel to be tested remains unchanged.

[0032] In a further embodiment, such as Figures 4-6As shown, the lighting mechanism 5 also includes a mounting ring 503, which is fixedly mounted on the incident lighting element 501. A first connecting rod 504 is fixedly mounted on the mounting ring 503, and multiple second connecting rods 505 are slidably mounted on the mounting ring 503. Multiple oblique lighting elements 502 are provided, and the multiple oblique lighting elements 502 are arranged in a ring array around the mounting ring 503. One of the oblique lighting elements 502 is rotatably connected to one end of the first connecting rod 504, and the remaining oblique lighting elements 502 are rotatably connected to one end of the second connecting rod 505. By setting multiple oblique lighting elements 502, oblique light can be projected onto the display panel to be inspected from different directions. This design can cover all areas of the display panel surface and avoid shadows or blind spots that may be generated by single-direction illumination. It is especially suitable for detecting scenarios with complex surface structures (such as curved surfaces, uneven textures) or small defects (such as edge defects, scratches, and foreign objects).

[0033] In a further embodiment, the lighting mechanism 5 further includes a sleeve 506 and a lifting ring 507. The sleeve 506 is fixedly installed on the upper end of the incident lighting element 501. The lifting ring 507 is sleeved on the sleeve 506 and slidably installed on the bottom of the sleeve 506. A plurality of sliders 508 are slidably installed on the lifting ring 507. A linkage rod 509 is rotatably installed on the slider 508. One end of each linkage rod 509 is connected to the corresponding oblique lighting element. The top of component 502 is rotatably connected to the connecting rod 504. The oblique illumination component 502 is also connected to the telescopic rod 305. When it performs adaptive angle adjustment, the lifting ring 507 is driven to rise and fall along the sleeve 506 through the corresponding linkage rod 509. The lifting ring 507 acts on the other linkage rods 509, driving the other oblique illumination components 502 to adjust their angles synchronously, so that the tilt angle of multiple oblique illumination components 502 remains consistent, and the illumination point on the display panel to be tested remains unchanged.

[0034] In a further embodiment, the lighting mechanism 5 further includes a second lifting ring 510, which is sleeved on the sleeve 506 and slidably mounted on the top of the sleeve 506. Multiple second sliders 511 are slidably mounted on the second lifting ring 510. The lower ends of the second sliders 511 are movably connected to two second linkage rods 512. The lower end of the leftmost second linkage rod 512 is movably connected to a first connecting rod 504, and the lower ends of the remaining second linkage rods 512 are movably connected to corresponding second connecting rods 505. By driving the second lifting ring 510 to rise and fall along the sleeve 506, the multiple second linkage rods 512... With adaptive deflection, slider 2 511 also slides adaptively on lifting ring 2 510. The distance between two adjacent oblique illumination elements 502 changes, but the distance between different oblique illumination elements 502 and adjacent oblique illumination elements 502 remains consistent, achieving the effect of adjusting the position of different oblique illumination elements 502 at equal intervals. This characteristic is crucial in automated inspection: if the spacing is uneven, the imaging effect of the same type of defect may vary greatly in different areas, affecting the stability of the detection algorithm; while the equal spacing design can standardize the illumination conditions, reduce misjudgments or missed detections caused by uneven illumination, and improve the reliability and repeatability of the detection system.

[0035] An automatic optical inspection device includes the aforementioned illumination system and a base 1. A carrier plate 101 is fixedly mounted on the front side of the base 1. (Refer to...) Figures 7-8 The display panel to be tested is placed on the upper end of the carrier plate 101. The lower end of the support column 2 is rotatably connected to the base 1. The rotation axis of the support column 2 is on the same plane as the upper end of the display panel to be tested. By rotating the support column 2, the lighting mechanism 5 can be driven to rotate around point C. Without changing the lighting distance, the lighting intensity can be changed by changing the lighting angle. This can achieve the beneficial effect achieved in the Chinese patent with authorization announcement number CN216160126U. Compared with the above patent, this invention can simultaneously change the lighting angle and intensity of the incident lighting element 501 and the oblique lighting element 502. Without changing the distance between the light source and the detection surface, the lighting intensity can be linearly adjusted to ensure the stability of the focal length, depth of field and other parameters of the optical system (such as camera imaging). This avoids imaging blur or uneven brightness caused by changes in distance, thereby improving the accuracy and consistency of defect detection.

[0036] The upper end of the base 1 is provided with a fan-shaped groove, and the lower end of the support column 2 is inserted into the fan-shaped groove. The lower end of the support column 2 is provided with a half-gear. A gear 102 is rotatably installed inside the base 1, and the gear 102 meshes with the half-gear. A motor 2 is fixedly installed on the back of the base 1, and the output end of the motor 2 is fixedly connected to the shaft of the gear 102. Driving the motor 2 drives the gear 102 to rotate, thereby driving the support column 2 to rotate and change the light angle and intensity. This transmission structure, through the meshing of the gear 102 and the half-gear, can achieve precise control of the rotation angle of the support column 2. The high stability of the gear transmission ensures a smooth and undisturbed light angle adjustment process. Combined with the automated drive of the motor 2, the light angle can be adjusted accurately and quickly according to the detection requirements, avoiding the errors and lag of manual adjustment.

[0037] A protruding post 201 is fixedly installed at the bottom of the support column 2. A guide groove 103 is provided on the side wall of the fan-shaped groove. The protruding post 201 is inserted into the guide groove 103. The guide groove 103 is arc-shaped, and the center of the guide groove 103 coincides with the rotation axis of the support column 2. The sliding fit between the arc-shaped guide groove 103 and the protruding post 201 forms a double-limiting support structure for the support column 2. This not only effectively disperses the radial load borne by the support column 2 during rotation and reduces structural wear caused by long-term use, but also ensures that the support column 2 always rotates with a constant radius through the coaxial design of the center, avoiding the deviation of the illumination angle caused by unstable support, thereby ensuring the linearity and repeatability of the illumination intensity adjustment. The synergistic effect of the above structures not only realizes the automatic and precise adjustment of the illumination angle, but also significantly improves the mechanical stability and durability of the device, providing a solid guarantee for the consistency and reliability of illumination conditions during optical inspection. It further ensures the stability of parameters such as focal length and depth of field of the camera imaging system, avoids detection errors caused by mechanical structural defects from the hardware level, and helps to improve the accuracy and efficiency of display panel defect detection.

[0038] The present invention also includes a detection camera 4 and a lens 6. The detection camera 4 is fixedly mounted on an adjustment base 301, and the lens 6 is fixedly mounted below the detection camera 4. The illumination element 501 is fixedly mounted at the lower end of the lens 6. The detection camera 4, lens 6, and illumination element 501 are all coaxially arranged. The detection camera 4 uses a high-resolution industrial camera (such as a CMOS or CCD sensor), which, together with the optical focusing effect of the lens 6, performs high-definition imaging of the surface of the display panel to be inspected. The coaxial design of the lens 6 (coinciding with the central axis of the illumination element 501) ensures that the incident light path and the imaging light path are strictly coaxial, avoiding image distortion caused by light path offset. Especially when inspecting curved or microstructured panels, it can ensure the image clarity of the edge areas. The lens 6 usually has an adjustable focal length function, which can be adjusted by adjusting the spacing between the lens groups to adapt to display panels of different thicknesses or curvatures, thus expanding the applicability of the detection device.

[0039] Finally, it should be noted that the above-described embodiments are merely specific implementations of this disclosure, used to illustrate the technical solutions of this disclosure, and not to limit it. The protection scope of this disclosure is not limited thereto. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this disclosure. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure, and should all be covered within the protection scope of this disclosure. Therefore, the protection scope of this disclosure should be determined by the protection scope of the claims.

Claims

1. A lighting system, characterized in that: The system includes a support column (2), an adjustment seat mechanism (3), and a lighting mechanism (5). The adjustment seat mechanism (3) includes an adjustment seat (301) and a rack (303). The adjustment seat (301) is slidably mounted on the support column (2), and the rack (303) is slidably mounted on the adjustment seat (301). The adjustment seat (301) can rise and fall along the support column (2), and when the adjustment seat (301) rises and falls, it can synchronously drive the rack (303) to move in the opposite direction by the same distance. A crossbar (304) is fixedly mounted on the upper end of the rack (303), and a telescopic rod (305) is rotatably mounted on one end of the crossbar (304). The lighting mechanism (5) is located below the adjustment seat (301), and the lighting mechanism (5) includes a spotlight. A spot lighting element (501) and an oblique lighting element (502) are provided. The oblique lighting element (502) is rotatably mounted on one side of the spot lighting element (501). The telescopic end of the telescopic rod (305) is fixedly connected to the upper end of the oblique lighting element (502). A light-emitting element one is fixedly installed inside the spot lighting element (501), and a light-emitting element two is fixedly installed inside the oblique lighting element (502). The horizontal distance from the mounting point of the telescopic rod (305) to the central axis of the light-emitting element one is twice the horizontal distance from the mounting point of the oblique lighting element (502) to the central axis of the light-emitting element one. A display panel to be tested is provided directly below the spot lighting element (501). The central axis of the light-emitting element one is perpendicular to the display panel to be tested. The telescopic rod (305) is fixedly mounted on one side of the spot lighting element (501). The vertical distance between the mounting point of 5) and the display panel to be tested is twice the vertical distance between the mounting point of the oblique illumination element (502) and the display panel to be tested. Gear 2 (302) is rotatably mounted inside the adjusting seat (301). The support column (2) is provided with a tooth groove. One side of gear 2 (302) meshes with the tooth groove. The rack (303) is set parallel to the support column (2). The other side of gear 2 (302) meshes with the rack (303). Motor 1 is fixedly mounted on the adjusting seat (301). The output end of motor 1 is fixedly connected to the shaft of gear 2 (302). The lighting mechanism (5) also includes a mounting ring (503). The mounting ring (503) is fixedly mounted on the incident illumination element (501). A connecting rod 1 (504) is fixedly installed on the mounting ring (503), and multiple connecting rods 2 (505) are slidably installed on the mounting ring (503). Multiple oblique illumination elements (502) are provided, arranged in a circular array around the mounting ring (503). One oblique illumination element (502) is rotatably connected to one end of the connecting rod 1 (504), and the remaining oblique illumination elements (502) are rotatably connected to one end of the connecting rods 2 (505). The lighting mechanism (5) also includes a sleeve (506) and a lifting ring 1 (507). The sleeve (506) is fixedly installed on the upper end of the incident illumination element (501), and the lifting ring 1 (507) is sleeved on the sleeve (506).Furthermore, the lifting ring (507) is slidably mounted on the bottom of the sleeve (506), and multiple sliders (508) are slidably mounted on the lifting ring (507). A linkage rod (509) is rotatably mounted on each slider (508), and one end of each linkage rod (509) is rotatably connected to the top of the corresponding oblique lighting element (502).

2. The lighting system according to claim 1, characterized in that: The lighting mechanism (5) further includes a second lifting ring (510), which is sleeved on the sleeve (506) and slidably mounted on the top of the sleeve (506). Multiple second sliders (511) are slidably mounted on the second lifting ring (510). The lower end of the second slider (511) is movably connected to two second linkage rods (512). The lower end of one of the second linkage rods (512) is movably connected to the first connecting rod (504), and the lower ends of the other second linkage rods (512) are movably connected to the corresponding second connecting rods (505).

3. An automatic optical inspection device, comprising the illumination system as described in any one of claims 1 or 2, characterized in that: It also includes a base (1), on which a carrier plate (101) is fixedly installed. The display panel to be tested is placed on the upper end of the carrier plate (101). The lower end of the support column (2) is rotatably connected to the base (1). The pivot of the support column (2) is on the same plane as the upper end of the display panel to be tested.

4. The automatic optical inspection device according to claim 3, characterized in that: The upper end of the base (1) is provided with a fan-shaped groove, the lower end of the support column (2) is inserted into the fan-shaped groove, and the lower end of the support column (2) is provided with a half gear. A gear one (102) is rotatably installed in the base (1), and the gear one (102) meshes with the half gear. A motor two is fixedly installed on the back of the base (1), and the output end of the motor two is fixedly connected to the shaft of the gear one (102).

5. The automatic optical inspection device according to claim 4, characterized in that: A protruding post (201) is fixedly installed at the bottom of the support column (2). A guide groove (103) is provided on the side wall of the fan-shaped groove. The protruding post (201) is inserted into the guide groove (103). The guide groove (103) is arc-shaped, and the center of the guide groove (103) coincides with the rotation axis of the support column (2).

6. The automatic optical inspection device according to claim 3, characterized in that: It also includes a detection camera (4) and a lens (6). The detection camera (4) is fixedly installed on the adjustment seat (301), the lens (6) is fixedly installed below the detection camera (4), and the spot illumination element (501) is fixedly installed at the lower end of the lens (6). The detection camera (4), the lens (6) and the spot illumination element (501) are all coaxially arranged.

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