A multi-faceted visual light source arrangement for synchronous detection

Abstract

The utility model relates to visual inspection technical field discloses a kind of multi-surface synchronous detection's visual light source device, including main body pedestal and camera, the main body pedestal side is fixed with camera, the main body pedestal is fixed with prism pedestal near camera side, the prism pedestal inside is equipped with triangular prism, the prism pedestal side is equipped with multilayer lamp pearl component, the multilayer lamp pearl component outer end is equipped with prism middle ring, the prism middle ring one side central is equipped with combined prism pedestal, the utility model is combined design by 30mm triangular prism and 4 3mm triangular prisms, can realize the imaging detection of product front and four sides simultaneously, without multiple turnover or moving product, detection efficiency is improved by more than 400%;Anti-reflection performance is excellent: lamp pearl adopts specific angle, blue, green 20 °, red 25 ° design, avoid light directly incident prism to produce reflection, ensure image definition.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection technology, specifically a visual light source device for multi-face synchronous inspection. Background Technology

[0002] In the industrial production sector, product quality control is of paramount importance. Industrial visual inspection is a key means of ensuring product quality. Various defects that may appear on the product surface, such as scratches, stains, and dimensional deviations, can negatively affect the product's performance, appearance, and lifespan. Therefore, accurately and efficiently detecting these defects is a necessary step to ensure that products meet quality standards.

[0003] However, the light source designs used in current industrial vision inspection technologies have significant limitations. Most existing vision inspection light sources use a single-direction illumination method, which means that they can only inspect a single face of the product at a time. If comprehensive inspection of multiple faces of a product is required, mechanical structures must be used to repeatedly flip the product or frequently move the light source and camera to achieve the purpose of inspecting each face in turn.

[0004] This traditional inspection method has many drawbacks. First, the inspection efficiency is extremely low, as only one surface can be inspected at a time, making the entire process time-consuming. Second, positioning errors are a significant problem. During multiple product flips or movements of the light source and camera, the product is prone to positional shifts. These shifts make it difficult to accurately match the inspection data from different surfaces, thus affecting the accuracy and reliability of defect detection. Finally, labor and equipment costs are high. To achieve product flipping or movement of the light source and camera, a dedicated flipping or moving mechanism is required, increasing both equipment investment and labor costs. Utility Model Content

[0005] The purpose of this invention is to provide a visual light source device for multi-faceted synchronous detection, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-faceted synchronous detection visual light source device, comprising a main base and a camera, wherein the camera is fixed on one side of the main base, and a prism base is fixed on the side of the main base near the camera. A triangular prism is provided inside the prism base, and a multi-layer LED bead assembly is provided on one side of the prism base. A prism middle ring is provided at the outer end of the multi-layer LED bead assembly, and a combined prism base is provided at the center of one side of the prism middle ring. A triangular combined prism is provided on one side of the combined prism base, and the triangular combined prism includes four prisms, which are evenly arranged circumferentially on the combined prism base.

[0007] Furthermore, the multi-layer LED assembly includes a first base, which is fixed to one end of the prism base. Blue LEDs are fixed to the inner walls of the first base. A second base is provided at one end of the first base. Green LEDs are fixed to the inner walls of the second base. A third base is provided at one end of the second base. Red LEDs are fixed to the inner walls of the third base. One end of the third base is connected to the middle ring of the prism.

[0008] Furthermore, the blue and green LEDs have a light emission angle of 20°, and the red LED has a light emission angle of 25°.

[0009] Furthermore, the triangular prism is a 30mm triangular prism with a light transmittance of 92% or more. The cross-section of the triangular prism is an isosceles right triangle with a right-angled side length of 30mm. The inclined surface faces the product detection area and is used to reflect the image of the front of the product to the camera.

[0010] Furthermore, the triangular combination prism consists of four 3mm triangular prisms, the light transmittance of the triangular combination prism is greater than or equal to 92%, the cross-section of the 3mm triangular prism is an isosceles right triangle with a right-angled side length of 3mm; the four prisms correspond to the four sides of the product respectively, and are used to reflect the image of each side to the triangular prism.

[0011] Furthermore, a camera base is fixed to one side of the main body base, the camera is fixed on the camera base, and a lens is provided at one end of the camera, the lens facing the inclined surface of the triangular prism.

[0012] Furthermore, a sheet metal protective cover is provided on one side of the main body base, outside the camera and lens.

[0013] Furthermore, the outer side of the main body base is provided with threaded holes, and the space between the triangular prism and the triangular combination prism is the detection area.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] When multi-face simultaneous inspection of a product is required, this invention first places the product to be inspected in the central inspection area of ​​the device, that is, in the space enclosed by four 3mm triangular prisms directly below a 30mm triangular prism. The image of the front of the product is directly reflected to the lens by the 30mm triangular prism. The images of the four sides of the product are reflected to the 30mm triangular prism by their respective 3mm triangular prisms, and then collected and reflected to the lens by the 30mm triangular prisms. The blue, green, and red light emitted by the multi-layer LED assembly can be selected in single or multiple colors according to the inspection requirements, illuminating the product surface at a specific angle to avoid the light from the LEDs directly entering the prisms and causing reflection. The lens receives the five images and transmits them to the camera, realizing the simultaneous inspection of the five sides of the product.

[0016] By combining a 30mm triangular prism with four 3mm triangular prisms, imaging and inspection of the front and four sides of the product can be achieved simultaneously without the need for multiple flipping or moving of the product, improving inspection efficiency by more than 400%; excellent anti-reflective performance: the LEDs are designed with specific angles, 20° for blue and green and 25° for red, to avoid direct light entering the prism and causing reflection, ensuring image clarity.

[0017] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0018] Figure 1 This is a perspective view of a visual light source device for multi-faceted synchronous detection according to the present invention;

[0019] Figure 2 This is an exploded view of a visual light source device for multi-faceted synchronous detection according to the present invention.

[0020] Figure 3 This is a front view of the exploded state of a visual light source device for multi-faceted synchronous detection according to this utility model;

[0021] Figure 4 This is a front sectional view of a visual light source device for multi-faceted synchronous detection according to the present invention;

[0022] Figure 5 This is a perspective view of a multi-faceted synchronous detection visual light source device according to the present invention.

[0023] In the diagram: 1. Main base; 2. Sheet metal protective cover; 3. Camera base; 4. Camera; 5. Lens; 6. Prism base; 7. Triangular prism; 8. First base; 9. Blue LED; 10. Second base; 11. Green LED; 12. Third base; 13. Red LED; 14. Prism center ring; 15. Triangular combination prism; 16. Combination prism base. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figures 1-5This utility model provides a technical solution: a multi-faceted synchronous detection visual light source device, including a main base 1 and a camera 4. The camera 4 is fixed on one side of the main base 1, and a prism base 6 is fixed on the side of the main base 1 near the camera 4. The prism base 6 has a ring structure and is fixed above the main base. Its top is provided with a prism positioning groove for fixing a 30mm triangular prism, and its bottom is connected to the main base by bolts. The inner side wall is provided with a connecting buckle adapted to the first base 8 to achieve a stable connection with the upper and lower structures.

[0026] The prism base 6 houses a triangular prism 7, a 30mm triangular prism made of K9 optical glass with a light transmittance of ≥92%. The prism 7 has an isosceles right triangle cross-section with 30mm legs, and its inclined surface faces the product inspection area, reflecting the image of the product's front to the camera 4. Simultaneously, it receives the side images of the product reflected from four 3mm triangular prisms and combines them for reflection onto the lens 5.

[0027] A multi-layer LED assembly is provided on one side of the prism base 6. This assembly includes a first base 8, which is fixed to one end of the prism base 6. Blue LEDs 9 are fixed to the inner walls of the first base 8. A second base 10 is located at one end of the first base 8, with green LEDs 11 fixed to its inner walls. A third base 12 is located at one end of the second base 10, with red LEDs 13 fixed to its inner walls. One end of the third base 12 is connected to the prism's central ring 14. The LEDs are mounted on corresponding PCB boards. The three layers of LEDs, each with a different color, correspond to the illumination requirements of different sides of the product. Blue LEDs 9 are suitable for detecting defects on metal surfaces, green LEDs 11 are suitable for detecting textures in plastic parts, and red LEDs 13 are suitable for detecting internal defects in transparent parts.

[0028] The multi-layer LED assembly has a prism ring 14 at its outer end. The prism ring 14 is a ring structure and is snapped to the third base 12 on its inner side. A combined prism base 16 is located in the center of one side of the prism ring 14. A triangular combined prism 15 is located on one side of the combined prism base 16. The triangular combined prism 15 includes four prisms, which are evenly arranged circumferentially on the combined prism base 16. The combined prism base 16 is fixed to the bottom of the prism ring 14. Four positioning grooves are evenly provided on its inner side along the circumferential direction, with adjacent grooves forming an angle of 90°, for fixing four 3mm triangular prisms.

[0029] The blue LED 9 and green LED 11 have a light emission angle of 20°, while the red LED 13 has a light emission angle of 25°. The blue LED 9 (wavelength 450-470nm) and green LED 11 (wavelength 520-540nm) have a light emission angle of 20°, while the red LED 13 (wavelength 620-640nm) has a light emission angle of 25°. This is to prevent direct light from entering the prism and causing reflections, thus ensuring image clarity.

[0030] The triangular combination prism 15 consists of four 3mm triangular prisms. The triangular combination prism 15 is made of K9 optical glass with a light transmittance of greater than or equal to 92%. The cross-section of the 3mm triangular prism is an isosceles right triangle with a right-angled side length of 3mm. The four prisms correspond to the four sides of the product and are used to reflect the image of each side to the triangular prism 7.

[0031] A camera base 3 is fixed to one side of the main base 1, and a camera 4 is fixed on the camera base 3 for mounting. A lens 5 is provided at one end of the camera 4, and the lens 5 faces the inclined surface of the triangular prism 7. It is aligned with the reflection path of the 30mm triangular prism and is used to receive the summarized five-sided image and transmit it to the camera.

[0032] A sheet metal protective cover 2 is provided on one side of the main base 1, outside the camera 4 and lens 5. This is for dust protection and to prevent interference from external light.

[0033] The main base 1 has threaded holes on its outer side. Made of aluminum alloy, the main base 1 also has threaded holes on its back. Serving as the mounting plate for the entire device, it is used to fix the device to the testing equipment frame and forms the basic mounting carrier for the entire device. The space between the triangular prism 7 and the triangular combination prism 15 is the testing area, used to place the product for multi-faceted simultaneous testing.

[0034] When multi-face simultaneous inspection of a product is required, this invention first places the product to be inspected in the central inspection area of ​​the device, that is, in the space enclosed by four 3mm triangular prisms directly below a 30mm triangular prism. The image of the front of the product is directly reflected to the lens by the 30mm triangular prism. The images of the four sides of the product are reflected to the 30mm triangular prism by their respective 3mm triangular prisms, and then collected and reflected to the lens by the 30mm triangular prisms. The blue, green, and red light emitted by the multi-layer LED assembly can be selected in single or multiple colors according to the inspection requirements, illuminating the product surface at a specific angle to avoid the light from the LEDs directly entering the prisms and causing reflection. The lens receives the five images and transmits them to the camera, realizing the simultaneous inspection of the five sides of the product.

[0035] By combining a 30mm triangular prism with four 3mm triangular prisms, imaging and inspection of the front and four sides of the product can be achieved simultaneously without the need for multiple flipping or moving of the product, improving inspection efficiency by more than 400%; excellent anti-reflective performance: the LEDs are designed with specific angles, 20° for blue and green and 25° for red, to avoid direct light entering the prism and causing reflection, ensuring image clarity.

[0036] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A visual light source device for multi-faceted synchronous detection, comprising a main base (1) and a camera (4), characterized in that: A camera (4) is fixed on one side of the main base (1). A prism base (6) is fixed on the side of the main base (1) near the camera (4). A triangular prism (7) is provided inside the prism base (6). A multi-layer LED assembly is provided on one side of the prism base (6). A prism middle ring (14) is provided at the outer end of the multi-layer LED assembly. A combined prism base (16) is provided in the center of one side of the prism middle ring (14). A triangular combined prism (15) is provided on one side of the combined prism base (16). The triangular combined prism (15) includes four prisms, which are evenly arranged circumferentially on the combined prism base (16).

2. The visual light source device for multi-faceted synchronous detection according to claim 1, characterized in that: The multi-layer LED assembly includes a first base (8), which is fixed to one end of a prism base (6). Blue LEDs (9) are fixed to the inner walls of the first base (8). A second base (10) is provided at one end of the first base (8). Green LEDs (11) are fixed to the inner walls of the second base (10). A third base (12) is provided at one end of the second base (10). Red LEDs (13) are fixed to the inner walls of the third base (12). One end of the third base (12) is connected to the middle ring (14) of the prism.

3. The visual light source device for multi-faceted synchronous detection according to claim 2, characterized in that: The blue LED (9) and green LED (11) have a light emission angle of 20°, and the red LED (13) has a light emission angle of 25°.

4. The visual light source device for multi-faceted synchronous detection according to claim 1, characterized in that: The triangular prism (7) is a 30mm triangular prism with a light transmittance of 92% or more. The cross-section of the triangular prism (7) is an isosceles right triangle with a right-angled side length of 30mm. The inclined surface faces the product detection area and is used to reflect the image of the front of the product to the camera (4).

5. The visual light source device for multi-faceted synchronous detection according to claim 4, characterized in that: The triangular combination prism (15) consists of four 3mm triangular prisms. The light transmittance of the triangular combination prism (15) is greater than or equal to 92%. The cross-section of the 3mm triangular prism is an isosceles right triangle with a right-angled side length of 3mm. The four prisms correspond to the four sides of the product and are used to reflect the images of each side to the triangular prism (7).

6. The visual light source device for multi-faceted synchronous detection according to claim 5, characterized in that: A camera base (3) is fixed on one side of the main body base (1), and the camera (4) is fixed on the camera base (3). A lens (5) is provided at one end of the camera (4), and the lens (5) faces the inclined surface of the triangular prism (7).

7. The visual light source device for multi-faceted synchronous detection according to claim 6, characterized in that: The main base (1) has a sheet metal protective cover (2) on one side located outside the camera (4) and lens (5).

8. The visual light source device for multi-faceted synchronous detection according to claim 1, characterized in that: The main base (1) has a threaded hole on the outside, and the space between the triangular prism (7) and the triangular combination prism (15) is the detection area.

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