Illuminating system and automatic optical detection device comprising same

Abstract

The invention discloses an illumination system and an automatic optical detection device comprising the illumination system, and relates to the technical field of illumination systems.The illumination system comprises a supporting column, an adjusting seat mechanism and an illumination mechanism, the adjusting seat mechanism comprises an adjusting seat and a rack, the adjusting seat is slidably installed on the supporting column, the rack is slidably installed on the adjusting seat, and the rack is slidably installed on the supporting column; the adjusting seat can ascend and descend along the supporting column, the adjusting seat can synchronously drive the rack to reversely move by the same distance when ascending and descending, a cross rod is fixedly installed at the upper end of the rack, a telescopic rod is rotatably installed at one end of the cross rod, and the lighting mechanism is arranged below the adjusting seat. The illumination mechanism comprises an epiradiation illumination part and an oblique radiation illumination part, the oblique radiation illumination part is rotationally installed on one side of the epiradiation illumination part, and the telescopic end of the telescopic rod is fixedly connected with the upper end of the oblique radiation illumination part. Through the overall structure arrangement, the illumination intensity adjusting range is enlarged, and the detection efficiency and precision are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting systems, and more particularly to a lighting system and an automatic optical detection device comprising the lighting system. Background Art

[0002] With the rapid development of display technology, display panels have become widely used in various industries. The quality of display panels is directly related to the service life of related products. Display panel testing equipment is an essential component for ensuring display panel quality. Display panel testing equipment generally includes a camera, lens, and light source. During use, the camera sometimes needs to be adjusted in various directions according to needs. In this case, for the best shooting effect, it is best to align the focus point of the light source with the shooting point to achieve the clearest camera image.

[0003] A Chinese patent with authorization announcement number CN102679236B discloses an illumination system, an automatic optical inspection device including the illumination system, and a method thereof. The invention adds a coaxial epi-illumination unit to the traditional oblique illumination unit, which illuminates the inspected circuit board vertically from directly above, thereby achieving normalized imaging display and inspection. However, the invention has the following defects: the epi-illumination unit and the oblique illumination unit can only provide constant oblique light, and the light intensity of the oblique illumination area cannot be adjusted according to product needs. A Chinese patent with authorization announcement number CN216160126U discloses an illumination system and an optical detection device. An incident angle adjustment mechanism is provided, and 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 lighting unit is slidably connected to the arc-shaped slide groove in a lockable manner, so that the angle of the oblique lighting unit can be adjusted, and the light intensity of the oblique lighting area can be adjusted according to product needs. However, in this technical solution, only the light intensity of the oblique lighting unit is adjustable, and the light intensity is adjusted by adjusting the light angle of the oblique lighting 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] In response to the shortcomings of the prior art, the purpose of the present invention is to provide a lighting system and an automatic optical detection device including the lighting system. The present invention uses gear rack transmission and geometric structure design to automatically adjust the inclination angle of the oblique lighting component when the adjustment seat is raised or lowered, ensuring that the lighting point of the light-emitting element 2 remains unchanged. There is no need to manually calibrate the angle, and the height of the falling and oblique lighting can be adjusted synchronously. The light intensity can be linearly changed while maintaining a stable landing point, and the adjustment range of the lighting distance is expanded to adapt to the detection of display panels of different sizes and thicknesses, avoid uneven lighting caused by angle deviation, and improve detection efficiency and accuracy.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lighting system, comprising a pillar, an adjustment seat mechanism and a lighting mechanism, the adjustment seat mechanism comprising an adjustment seat and a rack, the adjustment seat being slidably mounted on the pillar, the rack being slidably mounted on the adjustment seat, the adjustment seat being capable of being raised and lowered along the pillar, and the adjustment seat being capable of synchronously driving the rack to move in the opposite direction by the same distance when being raised and lowered, a cross bar being fixedly mounted on the upper end of the rack, a telescopic rod being rotatably mounted on one end of the cross bar, the lighting mechanism being arranged below the adjustment seat, the lighting mechanism comprising a falling lighting component and an oblique lighting component, the oblique lighting component being rotatably mounted on one side of the falling lighting component, and the telescopic end of the telescopic rod being fixedly connected to the upper end of the oblique lighting component.

[0006] As a further improvement of the present invention, light-emitting element one is fixedly installed in the falling lighting component, light-emitting element two is fixedly installed in the oblique lighting component, the horizontal distance between the installation point of the telescopic rod and the central axis of light-emitting element one is twice the horizontal distance between the installation point of the oblique lighting component and the central axis of light-emitting element one, a display panel to be detected is provided directly below the falling lighting component, the central axis of light-emitting element one is perpendicular to the display panel to be detected, and the vertical distance between the installation point of the telescopic rod and the display panel to be detected is twice the vertical distance between the installation point of the oblique lighting component and the display panel to be detected.

[0007] As a further improvement of the present invention, gear 2 is rotatably installed in the adjustment seat, a tooth groove is provided on the pillar, one side of gear 2 is engaged with the tooth groove, the rack is arranged parallel to the pillar, the other side of gear 2 is engaged with the rack, and motor 1 is fixedly installed on the adjustment seat, and the output end of motor 1 is fixedly connected to the axis of gear 2.

[0008] As a further improvement of the present invention, the lighting mechanism also includes a mounting ring, which is fixedly mounted on the falling lighting component, a connecting rod 1 is fixedly mounted on the mounting ring, and a plurality of connecting rods 2 are slidably mounted on the mounting ring. There are multiple oblique lighting components, and the multiple oblique lighting components are arranged in a circular array on the periphery of the mounting ring. One of the oblique lighting components is rotatably connected to one end of the connecting rod 1, and the remaining oblique lighting components are rotatably connected to one end of the connecting rod 2.

[0009] As a further improvement of the present invention, the lighting mechanism also includes a sleeve and a lifting ring. The sleeve is fixedly installed on the upper end of the down-lighting component. The lifting ring is set on the sleeve, and the lifting ring is slidably installed on the bottom of the sleeve. A plurality of 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 component.

[0010] As a further improvement of the present invention, the lighting mechanism also includes a lifting ring 2, which is sleeved on the sleeve and slidably installed on the top of the sleeve. A plurality of sliders 2 are slidably installed on the lifting ring 2, and the lower ends of the sliders 2 are movably connected to two linkage rods 2, wherein the lower end of one linkage rod 2 is movably connected to the connecting rod 1, and the lower ends of the remaining linkage rods 2 are movably connected to the corresponding connecting rods 2.

[0011] An automatic optical inspection device includes the above-mentioned lighting system and a base, wherein a carrier plate is fixedly mounted on the front of the base, the display panel to be inspected is placed on the upper end of the carrier plate, the lower end of the support is rotatably connected to the base, and the rotating shaft of the support is in the same plane as the upper end of the display panel to be inspected.

[0012] As a further improvement of the present invention, a fan-shaped groove is provided at the upper end of the base, the lower end of the pillar is inserted into the fan-shaped groove, and a half gear is provided at the lower end of the pillar. Gear one is rotatably installed in the base, and the gear one is engaged with the half gear. Motor two is fixedly installed on the back of the base, and the output end of motor two is fixedly connected to the axis of gear one.

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

[0014] As a further improvement of the present invention, an automatic optical detection device also includes a detection camera and a lens, wherein the detection camera is fixedly mounted on an adjustment seat, the lens is fixedly mounted below the detection camera, and the epitaxial lighting component is fixedly mounted at the lower end of the lens, and the detection camera, lens and epitaxial lighting component are all coaxially arranged.

[0015] Beneficial effects of the present invention:

[0016] 1. The present invention uses gear rack transmission and geometric structure design. When the adjustment seat is raised or lowered, the oblique lighting component automatically adjusts the tilt angle, ensuring that the light landing point C of the light-emitting element 2 remains unchanged. There is no need to manually calibrate the angle. The height of the falling and oblique lighting can be adjusted synchronously. The light intensity can be linearly changed while maintaining a stable landing point, expanding the adjustment range of the lighting distance to adapt to the detection of display panels of different sizes and thicknesses, avoiding uneven lighting caused by angle deviation, and improving detection efficiency and accuracy.

[0017] 2. In the present invention, multiple oblique lighting elements are distributed in a circular array, and multi-angle synchronous adjustment is achieved through a linkage structure, projecting oblique light from different directions to cover the entire area of the display panel, eliminating shadows and blind spots caused by single-direction lighting. The synchronous angle adjustment mechanism ensures that the landing points of each light remain unchanged, and the equal-interval adjustment design provides standardized lighting conditions, reducing misjudgments and missed detections caused by uneven lighting. It is suitable for the detection of curved surfaces, concave-convex textures and tiny defects, and improves the detection coverage of complex structure surfaces.

[0018] 3. In the present invention, the rotating mechanism of the pillar drives the lighting system to rotate with point C as the center, adjusts the lighting angle without changing the distance between the light source and the detection surface, and synchronously controls the intensity of the incident and oblique light. The detection camera, lens and incident lighting component are coaxially designed to avoid image distortion caused by optical path offset. Combined with the adjustable focal length lens to adapt to panels with different curvatures, this design stabilizes the focal length and depth of field parameters, ensures the imaging clarity of the edge area, provides a reliable image basis for automated detection, and improves defect recognition accuracy and system repeatability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the three-dimensional structure of the lighting system and the automatic optical detection device including the lighting system of the present invention;

[0020] Figure 2 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 is a schematic diagram of the three-dimensional structure of the lighting system of the present invention;

[0022] Figure 4 Schematic diagram of the three-dimensional structure of the lighting mechanism of the present invention;

[0023] Figure 5 Schematic diagram of the disassembled structure of the lighting mechanism of the present invention;

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

[0025] Figure 7 Schematic diagram of the three-dimensional structure of the base of the present invention;

[0026] Figure 8 It is a schematic diagram of the cross-section structure of the base of the present invention.

[0027] 1. Base; 101. Carrier plate; 102. Gear 1; 103. Guide groove; 2. Pillar; 201. Boss; 3. Adjustment seat mechanism; 301. Adjustment seat; 302. Gear 2; 303. Rack; 304. Cross bar; 305. Telescopic rod; 4. Detection camera; 5. Illumination mechanism; 501. Falling 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 DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The components of the embodiments of the present disclosure generally described and shown here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure is not intended to limit the scope of the present disclosure for protection, but merely represents the selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0029] refer to Figures 1 to 3 As shown, a specific embodiment of an illumination system and an automatic optical detection device including the illumination system of the present invention is shown. An illumination system includes a pillar 2, an adjustment seat mechanism 3 and an illumination 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 pillar 2. The rack 303 is slidably mounted on the adjustment seat 301. A cross bar 304 is fixedly mounted on the upper end of the rack 303. A telescopic rod 305 is rotatably mounted on one end of the cross bar 304. The illumination mechanism 5 is arranged below the adjustment seat 301. The illumination mechanism 5 includes a falling illumination component 501 and an oblique illumination component 502. The oblique illumination component 502 is rotatably mounted on one side of the falling illumination component 501. The telescopic end of the telescopic rod 305 is fixedly connected to the upper end of the oblique illumination component 502. A light-emitting element 1 is fixedly mounted in the falling illumination component 501. A light-emitting element 2 is fixedly mounted in the oblique illumination component 502. The installation point of the telescopic rod 305 ( Figure 2 The horizontal distance between the center point A) and the center axis of the light emitting element is the installation point of the oblique lighting element 502 ( Figure 2The horizontal distance between the point B in the middle and the center axis of the light-emitting element 1 is twice that between the point B in the middle and the center axis of the light-emitting element 1. The display panel to be detected is provided directly below the epi-illumination element 501. The center axis of the light-emitting element 1 is perpendicular to the display panel to be detected. The vertical distance between the installation point of the telescopic rod 305 and the display panel to be detected is twice that between the installation point of the oblique illumination element 502 and the display panel to be detected. The light-emitting element 1 projects vertical light to the display panel to be detected. The light-emitting element 2 projects oblique light to the display panel to be detected, and the projection point is point C. In the initial state, as shown in FIG. Figure 2 As shown in the figure, a right triangle is drawn with the central axis of the light-emitting element 1 and the perpendicular line from point A to the central axis as two right-angled sides, and the line connecting points AC as the hypotenuse. Since the adjustment seat 301 can be raised and lowered along the pillar 2, and the adjustment seat 301 can synchronously drive the rack 303 to move the same distance in the opposite direction when it is raised and lowered, the rising distance of point A is always twice the rising distance of point B. In the traditional production process, adjusting the distance between the lighting device and the light landing point to adjust the lighting intensity of the lighting device is a common method. However, in order to ensure that the light landing point of the oblique lighting component 502 remains unchanged, its angle needs to be adjusted, which is time-consuming and labor-intensive. In the present invention, when adjusting the height of the lighting mechanism 5, based on the setting of the above-mentioned structure, the three points ABC are always on the same straight line. Under the action of the telescopic rod 305, the inclination angle of the oblique lighting component 502 is adaptively adjusted, and the landing point of the light projected by the light-emitting element 2 on the display panel to be detected remains unchanged, which facilitates the synchronous adjustment of the light intensity of the falling lighting component 501 and the oblique lighting component 502, and the adjustment range is large, which increases the scope of application of the present invention, and no manual intervention is required in the angle adjustment, which avoids errors and uncertainties caused by human operation, so that the light landing point always remains stable, greatly improving the accuracy and reliability of the adjustment.

[0030] Both light-emitting elements 1 and 2 within the aforementioned incident lighting element 501 and oblique lighting element 502 utilize electroluminescent technology (e.g., high-brightness LEDs or organic electroluminescent devices). This core advantage lies in directly generating light energy by exciting the luminescent material through an electric field, thus avoiding the heat loss and low energy conversion efficiency associated with traditional lighting technologies (e.g., fluorescent lamps). Electroluminescent elements boast an electro-optical conversion efficiency that is over 40% higher than that of traditional light sources. Furthermore, they feature low-voltage drive (typical operating voltage 3-24V) and fast response speeds (nanoseconds), laying the foundation for energy conservation from the very beginning. Combined with the mechanical adjustment structure of the present invention, the energy-saving characteristics of the electroluminescent element are further amplified: when the light intensity needs to be adjusted, the traditional solution needs to be achieved by increasing the light source power 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 lighting element 502 to adaptively adjust the inclination angle with point C as the fixed landing point (without changing the distance between the light source and the detection surface). In conjunction with the vertical lifting of the falling lighting element 501, the light intensity of the detection surface can be linearly adjusted through geometric optical principles (such as Lambert's cosine law) while keeping the light source driving current unchanged.

[0031] In a further embodiment, a second gear 302 is rotatably installed in the adjustment seat 301, and a tooth groove is provided on the pillar 2. One side of the second gear 302 is engaged with the tooth groove, and the rack 303 is arranged parallel to the pillar 2. The other side of the second gear 302 is engaged with the rack 303. A motor 1 is fixedly installed on the adjustment seat 301, and the output end of the motor 1 is fixedly connected to the axis of the second gear 302. When adjusting the height of the lighting mechanism 5, the second gear 302 is driven to rotate by the motor 1, and the second gear 302 acts on the tooth groove to raise the adjustment seat 301. At the same time, the rack 303 is raised with the adjustment seat 301, and itself is raised relative to the adjustment seat 301 under the action of the second gear 302, ensuring that the height of the raised point A is always twice the height of the raised point B, ensuring that the geometric relationship between the three points A, B, and C remains unchanged, and is always on the same straight line, and the landing point of the light projected by the light-emitting element 2 on the display panel to be detected remains unchanged.

[0032] In a further embodiment, Figure 4-Figure 6As shown, the lighting mechanism 5 also includes a mounting ring 503, which is fixedly mounted on the falling lighting element 501, and a connecting rod 1 504 is fixedly mounted on the mounting ring 503, and a plurality of connecting rods 2 505 are slidably mounted on the mounting ring 503. A plurality of oblique lighting elements 502 are provided, and the plurality of oblique lighting elements 502 are arranged in a circular array on the periphery of the mounting ring 503, one of the oblique lighting elements 502 is rotatably connected to one end of the connecting rod 1 504, and the remaining oblique lighting elements 502 are rotatably connected to one end of the connecting rod 2 505. The provision of multiple oblique lighting elements 502 can project oblique light from different directions to the display panel to be inspected. This design can cover various areas of the display panel surface, avoid shadows or detection blind spots that may be caused by single-direction lighting, and is particularly suitable for detecting scenes with complex surface structures (such as curved surfaces, concave-convex textures) or tiny defects (such as edge defects, scratches, and foreign matter).

[0033] In a further embodiment, the lighting mechanism 5 further includes a sleeve 506 and a lifting ring 507, wherein the sleeve 506 is fixedly mounted on the upper end of the falling lighting element 501, the lifting ring 507 is sleeved on the sleeve 506, and the lifting ring 507 is slidably mounted on the bottom of the sleeve 506, and a plurality of sliders 508 are slidably mounted on the lifting ring 507, and a linkage rod 509 is rotatably mounted on the slider 508, and one end of each linkage rod 509 is connected to the corresponding oblique lighting element. The top of the component 502 is rotatably connected to the connecting rod 1 504. The oblique lighting component 502 is also connected to the telescopic rod 305. When it performs adaptive angle adjustment, the corresponding linkage rod 1 509 drives the lifting ring 1 507 to rise and fall along the sleeve 506. The lifting ring 1 507 acts on the remaining linkage rods 1 509, driving the remaining oblique lighting components 502 to adjust their angles synchronously, so that the inclination angles of multiple oblique lighting components 502 are always consistent, and the light landing point on the display panel to be detected remains unchanged.

[0034] In a further embodiment, the lighting mechanism 5 further includes a lifting ring 2 510, which is sleeved on the sleeve 506 and slidably mounted on the top of the sleeve 506. A plurality of sliders 2 511 are slidably mounted on the lifting ring 2 510, and the lower ends of the sliders 2 511 are movably connected to two linkage rods 2 512, the lower end of the leftmost linkage rod 2 512 is movably connected to the connecting rod 1 504, and the lower ends of the remaining linkage rods 2 512 are movably connected to the corresponding connecting rods 2 505. By driving the lifting ring 2 510 to rise and fall along the sleeve 506, the plurality of linkage rods 2 512 Adaptive deflection, slider 2 511 also adaptively slides on lifting ring 2 510, the distance between two adjacent oblique lighting elements 502 changes, but the distance between different oblique lighting elements 502 and adjacent oblique lighting elements 502 is always consistent, achieving the effect of adjusting the positions of different oblique lighting elements 502 at equal intervals. This feature is crucial in automated detection: if the spacing is uneven, it may cause the imaging effects of the same type of defects in different areas to be quite different, affecting the stability of the detection algorithm; and the equal spacing design can standardize the lighting conditions, reduce misjudgments or missed detections introduced by uneven lighting, and improve the reliability and repeatability of the detection system.

[0035] An automatic optical inspection device includes the above-mentioned lighting system and a base 1, wherein a carrier plate 101 is fixedly mounted on the front of the base 1. Figure 7-Figure 8 The display panel to be inspected is placed on the upper end of the carrier 101, and the lower end of the pillar 2 is rotatably connected to the base 1. The rotating shaft of the pillar 2 is in the same plane as the upper end of the display panel to be inspected. By rotating the pillar 2, the lighting mechanism 5 can be driven to rotate with point C as the center of the circle. Without changing the illumination distance, the illumination intensity is changed by changing the illumination angle, which can achieve the beneficial effects achieved in the Chinese patent with authorization announcement number CN216160126U. Compared with the above patent, the present invention can synchronously change the illumination angle and intensity of the epi-illumination component 501 and the oblique illumination component 502. Without changing the distance between the light source and the detection surface, the illumination intensity is linearly adjusted to ensure the stability of parameters such as the focal length and depth of field of the optical system (such as camera imaging), avoid imaging blur or uneven brightness caused by distance changes, thereby improving the accuracy and consistency of defect detection.

[0036] The upper end of the base 1 is provided with a fan-shaped groove, into which the lower end of the pillar 2 is inserted, and the lower end of the pillar 2 is provided with a half gear. Gear 102 is rotatably mounted within the base 1, and meshes with the half gear. Motor 2 is fixedly mounted on the back of the base 1, and the output end of Motor 2 is fixedly connected to the axis of Gear 102. Driving Motor 2 to rotate Gear 102 drives pillar 2 to rotate, thereby changing the angle and intensity of illumination. This transmission structure, through the meshing transmission of Gear 102 and the half gear, can achieve precise control of the rotation angle of pillar 2. The high stability of the gear transmission ensures a smooth and shake-free illumination angle adjustment process. Combined with the automated drive of Motor 2, the illumination angle can be accurately and quickly adjusted according to detection requirements, avoiding the errors and lags of manual adjustment.

[0037] A boss 201 is fixedly mounted on the bottom of the support 2. A guide groove 103 is provided on the sidewall of the fan-shaped groove. The boss 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 2. The sliding fit between the arc-shaped guide groove 103 and the boss 201 forms a dual-limited support structure for the support 2. This not only effectively disperses the radial load borne by the support 2 during rotation, reducing structural wear caused by long-term use, but also ensures that the support 2 always rotates at a constant radius through the coaxial design of the center of the circle, avoiding the illumination angle deviation caused by unstable support, thereby ensuring the linearity and repeatability of the illumination intensity adjustment. The above-mentioned structure works synergistically, not only realizing automatic and precise adjustment of the illumination angle, but also significantly improving the mechanical stability and durability of the device, providing a solid guarantee for the consistency and reliability of the illumination conditions during the optical inspection process, further ensuring the stability of parameters such as the focal length and depth of field of the camera imaging system, avoiding detection errors caused by mechanical structural defects at the hardware level, and helping 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, wherein the detection camera 4 is fixedly mounted on an adjustment seat 301, and the lens 6 is fixedly mounted below the detection camera 4, and the falling illumination component 501 is fixedly mounted on the lower end of the lens 6. The detection camera 4, the lens 6 and the falling illumination component 501 are all coaxially arranged, and the detection camera 4 adopts a high-resolution industrial camera (such as a CMOS or CCD sensor), which cooperates with the optical focusing effect of the lens 6 to perform high-definition imaging on the surface of the display panel to be detected. The coaxial design of the lens 6 (coinciding with the central axis of the falling illumination component 501) ensures that the incident light path and the imaging light path are strictly coaxial, and avoids image distortion caused by light path offset, especially when detecting curved surfaces or microstructure panels, the imaging clarity of the edge area can be guaranteed. The lens 6 usually has an adjustable focal length function, which can adapt to display panels of different thicknesses or curvatures by adjusting the spacing between the lens groups, thereby expanding the scope of application of the detection device.

[0039] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present disclosure, which are used to illustrate the technical solutions of the present disclosure, rather than to limit them. The scope of protection of the present disclosure is not limited thereto. Although the present disclosure has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed in the present disclosure, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure shall be subject to the scope of protection of the claims.

Claims

1. A lighting system, characterized in that: The invention comprises a support (2), an adjustment seat mechanism (3) and an illumination mechanism (5), wherein the adjustment seat mechanism (3) comprises an adjustment seat (301) and a rack (303), wherein the adjustment seat (301) is slidably mounted on the support (2), and the rack (303) is slidably mounted on the adjustment seat (301), and the adjustment seat (301) can be raised and lowered along the support (2), and when the adjustment seat (301) is raised and lowered, the rack (303) can be synchronously driven to move in the opposite direction by the same distance, and ... 3) is fixedly mounted on the upper end of a cross bar (304), one end of the cross bar (304) is rotatably mounted on a telescopic rod (305), the lighting mechanism (5) is arranged below the adjustment seat (301), the lighting mechanism (5) comprises a falling lighting component (501) and an oblique lighting component (502), the oblique lighting component (502) is rotatably mounted on one side of the falling lighting component (501), and the telescopic end of the telescopic rod (305) is fixedly connected to the upper end of the oblique lighting component (502).

2. The lighting system according to claim 1, wherein: A first light emitting element is fixedly installed in the falling illumination component (501), a second light emitting element is fixedly installed in the oblique illumination component (502), a horizontal distance between the installation point of the telescopic rod (305) and the central axis of the first light emitting element is twice the horizontal distance between the installation point of the oblique illumination component (502) and the central axis of the first light emitting element, a display panel to be detected is provided directly below the falling illumination component (501), the central axis of the first light emitting element is perpendicular to the display panel to be detected, and a vertical distance between the installation point of the telescopic rod (305) and the display panel to be detected is twice the vertical distance between the installation point of the oblique illumination component (502) and the display panel to be detected.

3. The lighting system according to claim 1, wherein: A second gear (302) is rotatably mounted in the adjustment seat (301), a tooth groove is provided on the pillar (2), one side of the second gear (302) is meshed with the tooth groove, the rack (303) is arranged parallel to the pillar (2), the other side of the second gear (302) is meshed with the rack (303), and a first motor is fixedly mounted on the adjustment seat (301), and the output end of the first motor is fixedly connected to the axis of the second gear (302).

4. The lighting system according to claim 1, wherein: The lighting mechanism (5) further comprises a mounting ring (503), wherein the mounting ring (503) is fixedly mounted on the falling lighting element (501), a connecting rod 1 (504) is fixedly mounted on the mounting ring (503), a plurality of connecting rods 2 (505) are slidably mounted on the mounting ring (503), a plurality of the oblique lighting elements (502) are provided, and the plurality of the oblique lighting elements (502) are arranged in a circular array on the periphery of the mounting ring (503), one of the oblique lighting elements (502) is rotatably connected to one end of the connecting rod 1 (504), and the remaining oblique lighting elements (502) are rotatably connected to one end of the connecting rod 2 (505).

5. The lighting system according to claim 4, characterized in that: The lighting mechanism (5) further comprises a sleeve (506) and a lifting ring (507), wherein the sleeve (506) is fixedly mounted on the upper end of the oblique lighting component (501), the lifting ring (507) is sleeved on the sleeve (506), and the lifting ring (507) is slidably mounted on the bottom of the sleeve (506), a plurality of sliders (508) are slidably mounted on the lifting ring (507), a linkage rod (509) is rotatably mounted on the slider (508), and one end of each linkage rod (509) is rotatably connected to the top of the corresponding oblique lighting component (502).

6. The lighting system according to claim 5, characterized in that: The lighting mechanism (5) further comprises a lifting ring (510), wherein the lifting ring (510) is sleeved on the sleeve (506) and the lifting ring (510) is slidably mounted on the top of the sleeve (506). A plurality of sliders (511) are slidably mounted on the lifting ring (510), and the lower ends of the sliders (511) are movably connected to two linkage rods (512), wherein the lower end of one linkage rod (512) is movably connected to the connecting rod (504), and the lower ends of the remaining linkage rods (512) are movably connected to the corresponding connecting rods (505).

7. An automatic optical inspection device comprising the lighting system according to any one of claims 1 to 6, characterized in that: The invention also comprises a base (1), a carrier plate (101) being fixedly mounted on the front of the base (1), a display panel to be detected being placed on the upper end of the carrier plate (101), a lower end of the support (2) being rotatably connected to the base (1), and a rotating shaft of the support (2) being in the same plane as the upper end of the display panel to be detected.

8. The automatic optical inspection device according to claim 7, characterized in that: The upper end of the base (1) is provided with a fan-shaped groove, the lower end of the pillar (2) is inserted into the fan-shaped groove, and the lower end of the pillar (2) is provided with a half gear. A gear 1 (102) is rotatably installed in the base (1), and the gear 1 (102) is engaged 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 axis of the gear 1 (102).

9. The automatic optical inspection device according to claim 8, characterized in that: A boss (201) is fixedly mounted on the bottom of the pillar (2), a guide groove (103) is provided on the side wall of the fan-shaped groove, the boss (201) is inserted into the guide groove (103), the guide groove (103) is in an arc shape, and the center of the guide groove (103) coincides with the rotation axis of the pillar (2).

10. The automatic optical inspection device according to claim 7, characterized in that: The device further comprises a detection camera (4) and a lens (6), wherein the detection camera (4) is fixedly mounted on the adjustment seat (301), the lens (6) is fixedly mounted below the detection camera (4), and the epi-illumination component (501) is fixedly mounted at the lower end of the lens (6), and the detection camera (4), the lens (6) and the epi-illumination component (501) are all coaxially arranged.

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