A high-power rectangular surface light source for long-distance irradiation

Abstract

The utility model discloses a kind of high-power rectangular area light sources of long-distance irradiation, including installation shell, installation cavity is opened in the installation shell, ultra-high density COB light source is equipped in installation cavity one side, cooling assembly for the heat dissipation cooling of ultra-high density COB light source is equipped in the installation shell one end, the first flat convex lens is equipped in ultra-high density COB light source one end, the first flat convex lens one side is equipped with second flat convex lens, the second flat convex lens one side is equipped with third flat convex lens;A kind of high-power rectangular area light source of long-distance irradiation provided by the utility model, by the light emission of ultra-high density COB light source and by the light field (light spot) regulation and control of three-stage flat convex lens form long-distance irradiation, high-power, rectangular uniform area light source, with good illumination intensity when long-distance irradiation, rectangular light spot uniformity is high, rectangular light spot precision is higher and energy utilization efficiency is high.

Description

Technical Field

[0001] This utility model relates to the technical field of rectangular surface light sources, and in particular to a high-power rectangular surface light source for long-distance illumination. Background Technology

[0002] Long-range, wide-field-of-view rectangular surface light source technology is primarily aimed at applications in industrial machine vision inspection that require uniform and effective illumination of large target areas. Specifically, this technology requires the rectangular surface light source to generate a uniform light field covering a large area (e.g., hundreds of millimeters or even meters in scale) with good shape control (e.g., rectangular, square, etc.) at a projection distance of several meters (e.g., 1-2 meters or more). This type of light source is crucial for detecting surface defects, dimensions, and positioning information of large objects (such as car bodies, photovoltaic panels, printed rolls, and shelf merchandise). Its core objective is to overcome light attenuation and diffusion caused by distance, achieving sufficient and consistent brightness within the detection area. This ensures the imaging system acquires high-contrast, high-signal-to-noise-ratio images, thereby guaranteeing detection accuracy and reliability.

[0003] However, long-distance, large-field-of-view rectangular surface light source technology (especially for industrial machine vision inspection) has significant bottlenecks:

[0004] ① Insufficient projection distance and severe light decay: When traditional LED rectangular surface light sources are used at a distance (e.g., 2 meters), the light intensity (brightness) decays severely, making it difficult to meet the lighting needs at a distance (e.g., 2 meters).

[0005] ② Poor light field uniformity: The brightness of the edge region of the light source is much smaller than that of the central region, resulting in inconsistent brightness in the detection area, which affects edge imaging and detection accuracy;

[0006] ③Low energy utilization efficiency: In order to cover a large area over a long distance, existing rectangular surface light sources often result in excessive diffusion of the light spot, with a large amount of light energy escaping to non-target areas. The proportion of energy actually used for effective lighting is very low, and the energy utilization rate is generally low. Utility Model Content

[0007] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a high-power rectangular surface light source for long-distance illumination, which solves the problems of severe light decay, poor light field uniformity and low energy utilization efficiency caused by insufficient projection distance of the rectangular surface light source.

[0008] To achieve the above objectives, this utility model provides a long-distance high-power rectangular surface light source, including a mounting housing, a mounting cavity on the mounting housing, an ultra-high density COB light source mounted on one side of the mounting cavity, a cooling component for heat dissipation and cooling of the ultra-high density COB light source mounted on one end of the mounting housing, a first plano-convex lens at one end of the ultra-high density COB light source, a second plano-convex lens on one side of the first plano-convex lens, and a third plano-convex lens on one side of the second plano-convex lens.

[0009] Preferably, the mounting housing includes a mounting block and a cylindrical housing mounted on one end of the mounting block, the mounting cavity is formed inside between the mounting block and the cylindrical housing, the cooling assembly is mounted on the mounting block, and the ultra-high density COB light source is mounted on the inner sidewall of the mounting block.

[0010] Preferably, the ultra-high density COB light source includes a PCB board and a plurality of LED chips linearly arranged on the PCB board. The PCB board is 50mm x 25mm in size, and the plurality of LED chips is 840.

[0011] Preferably, the cooling assembly includes an inlet pipe installed on one side of the outer wall of the mounting block, an outlet pipe installed on the other side of the outer wall of the mounting block, and heat dissipation pipes opened inside the mounting block and connected to the inlet pipe and the outlet pipe respectively.

[0012] Preferably, the mounting cavity includes a first cavity, a second cavity disposed on the first cavity, and a third cavity disposed on the second cavity. The ultra-high density COB light source is attached to the side wall of the first cavity, the first plano-convex lens is snapped onto the first cavity, the second plano-convex lens is snapped onto the second cavity, and the third plano-convex lens is snapped onto the third cavity.

[0013] Preferably, the first cavity has a first locking interface that matches the shape of the first plano-convex lens and allows the first plano-convex lens to be engaged.

[0014] Preferably, the second cavity has a second locking interface that matches the shape of the second plano-convex lens and is used to engage with the second plano-convex lens.

[0015] Preferably, the third cavity is provided with a third locking interface that matches the shape of the third plano-convex lens and allows the third plano-convex lens to be engaged.

[0016] Preferably, the diameter of the first plano-convex lens is less than the diameter of the second plano-convex lens, which is less than the diameter of the third plano-convex lens.

[0017] Preferably, a power cord that is electrically connected to an ultra-high density COB light source is externally connected to one side of the mounting housing.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. This utility model achieves the following by using an ultra-high density COB light source to emit light and by controlling the light field (spot) through a three-stage plano-convex lens to form a long-distance, high-power, rectangular uniform surface light source:

[0020] A. Breakthrough in long-distance illumination capability: When used at a distance (e.g., 2 meters), it stably forms a rectangular light spot, and the illumination intensity of the rectangular light spot meets the illumination requirements for target detection;

[0021] B. It has good light field uniformity: it can still maintain high light field uniformity when used at a long distance (e.g., 2 meters);

[0022] C. High precision in generating rectangular light spots: The rectangular light spots generated have high rectangularity, and the effective energy can be concentrated in the rectangular target area, resulting in high energy utilization efficiency;

[0023] D. Ultra-high energy density and utilization efficiency: Ultra-high density COB light sources have high energy density and high energy utilization efficiency.

[0024] 2. In summary, the present invention provides a high-power rectangular surface light source for long-distance illumination. It forms a high-power, rectangular uniform surface light source for long-distance illumination by using an ultra-high-density COB light source and by controlling the light field (spot) through a three-stage plano-convex lens. It has the advantages of good illumination intensity, high uniformity of rectangular spot, high precision of rectangular spot, and high energy utilization efficiency for long-distance illumination. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a structure for illuminating a high-power rectangular surface light source over a long distance, according to an embodiment of this utility model.

[0027] Figure 2 This is a front cross-sectional view of a high-power rectangular surface light source for long-distance illumination provided by an embodiment of this utility model;

[0028] Figure 3 This is a front sectional view of the mounting housing provided in an embodiment of this utility model;

[0029] Figure 4This is a schematic diagram of the structure of the ultra-high density COB light source, the first plano-convex lens, the second plano-convex lens, and the third plano-convex lens provided in the embodiment of this utility model;

[0030] Figure 5 This is a schematic diagram of the dimensions and structure of the ultra-high density COB light source provided in an embodiment of this utility model;

[0031] Figure 6 This is a schematic diagram showing the dimensions and structure of the first plano-convex lens, the second plano-convex lens, and the third plano-convex lens provided in an embodiment of this utility model;

[0032] Figure 7 This is an illustration of the light field illumination effect of a high-power rectangular surface light source irradiated from a distance, provided by an embodiment of this utility model.

[0033] The diagram includes:

[0034] 1. Ultra-high density COB light source; 2. First plano-convex lens; 3. Second plano-convex lens; 4. Third plano-convex lens; 5. Mounting housing; 50. Mounting cavity; 501. First cavity; 5010. First card interface; 502. Second cavity; 5020. Second card interface; 503. Third cavity; 5030. Third card interface; 51. Mounting block; 52. Cylindrical housing; 6. Cooling assembly; 61. Inlet pipe; 62. Outlet pipe; 7. Power cord. Detailed Implementation

[0035] The technical solution of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1 to 5 The present invention provides a long-distance high-power rectangular surface light source, including a mounting housing 5, a mounting cavity 50 on the mounting housing 5, an ultra-high density COB light source 1 mounted on one side of the mounting cavity 50, a cooling component 6 for heat dissipation and cooling of the ultra-high density COB light source 1 mounted on one end of the mounting housing 5, a first plano-convex lens 2 at one end of the ultra-high density COB light source 1, a second plano-convex lens 3 on one side of the first plano-convex lens 2, and a third plano-convex lens 4 on one side of the second plano-convex lens 3.

[0037] The mounting housing 5 includes a mounting block 51 and a cylindrical housing 52 installed at one end of the mounting block 51. The mounting cavity 50 is opened inside between the mounting block 51 and the cylindrical housing 52. The cooling assembly 6 is installed on the mounting block 51, and the ultra-high density COB light source 1 is installed on an inner side wall of the mounting block 51.

[0038] The mounting block 51 is rectangular in shape.

[0039] The ultra-high density COB light source 1 includes a PCB board and several LED chips linearly arranged on the PCB board. The PCB board size is set to 50mm x 25mm, and the number of LED chips is set to 840.

[0040] The cooling assembly 6 includes an inlet pipe 61 installed on one side of the outer wall of the mounting block 51, an outlet pipe 62 installed on the other side of the outer wall of the mounting block 51, and heat dissipation pipes (not shown in the drawings) opened inside the mounting block 51 and connected to the inlet pipe 61 and the outlet pipe 62 respectively. Cooling water or compressed cold air can be introduced through the inlet pipe 61, the heat dissipation pipes, and the outlet pipe 62 to cool the mounting block 51.

[0041] The heat dissipation pipes are located on the mounting block 51, which is existing technology. The specific implementation method is as follows: First, the mounting block 51 drills a first longitudinal channel at the position of the inlet pipe 61 and a second longitudinal channel at the position of the outlet pipe 62. Then, several transverse channels are drilled on the side wall of the mounting block 51. The several transverse channels and the two longitudinal channels are arranged in a crisscross pattern to form the heat dissipation pipes inside the mounting block 51. Then, the inlet pipe 61 is inserted into the top of the first longitudinal channel, and the bottom of the first longitudinal channel is blocked with a threaded plug or a tapered pin and sealed with adhesive to achieve the function of water and air isolation. Similarly, the outlet pipe 62 is inserted into the top of the second longitudinal channel, and the bottom of the second longitudinal channel is blocked with a threaded plug or a tapered pin and sealed with adhesive. Finally, in the same way, the two ends of several transverse channels are blocked with threaded plugs or tapered pins and sealed with adhesive.

[0042] The mounting cavity 50 includes a first cavity 501, a second cavity 502 disposed on the first cavity 501, and a third cavity 503 disposed on the second cavity 502. The ultra-high density COB light source 1 is attached to the side wall of the first cavity 501. The first plano-convex lens 2 is snapped onto the first cavity 501, the second plano-convex lens 3 is snapped onto the second cavity 502, and the third plano-convex lens 4 is snapped onto the third cavity 503.

[0043] The first cavity 501 is located on the inner side wall of the mounting block 51. Therefore, the ultra-high density COB light source 1 is attached to the side wall of the first cavity 501, which is the same as the ultra-high density COB light source 1 being installed on the inner side wall of the mounting block 51. In this way, the heat dissipation pipe is located inside the mounting block 51, and the heat dissipation pipe can effectively cool and dissipate the heat emitted by the ultra-high density COB light source 1.

[0044] The first cavity 501 has a first locking interface 5010 that matches the shape of the first plano-convex lens 2 and is used to lock the first plano-convex lens 2 into place.

[0045] The second cavity 502 has a second locking interface 5020 that matches the shape of the second plano-convex lens 3 and is used to lock the second plano-convex lens 3 into place.

[0046] The third cavity 503 has a third locking interface 5030 that matches the shape of the third plano-convex lens 4 and is used for locking the third plano-convex lens 4.

[0047] The volume of the first cavity 501 is less than the volume of the second cavity 502, which is less than the volume of the third cavity 503. In other words, the volumes of the first cavity 501, the second cavity 502, and the third cavity 503 increase in a stepwise manner.

[0048] The diameter of the first plano-convex lens 2 is less than the diameter of the second plano-convex lens 3, which is less than the diameter of the third plano-convex lens 4. Through the three-stage optical field amplification of the first plano-convex lens 2, the second plano-convex lens 3, and the third plano-convex lens 4, the ultra-high density COB light source 1 is magnified to the required rectangular target area.

[0049] A power cord 7, which is electrically connected to the ultra-high density COB light source 1, is connected to one side of the mounting housing 5.

[0050] A through hole is provided on one side of the mounting housing 5, which facilitates the power cord 7 to pass through the mounting cavity 50 and be electrically connected to the ultra-high density COB light source 1.

[0051] This utility model provides a method for long-distance illumination of a high-power rectangular surface light source. The light emitted by the ultra-high-density COB light source 1 and the light field (spot) controlled by a three-stage plano-convex lens system (combined with a first plano-convex lens 2, a second plano-convex lens 3, and a third plano-convex lens 4) create a long-distance, high-power, rectangular uniform surface light source. Its specific application advantages include (e.g.) Figure 5 —7 (as shown in the figure)

[0052] ① Breakthrough long-distance illumination capability: At a distance of 2500mm x 2.5 meters, it can stably form a clear rectangular light spot of 700mm x 300mm. This clear rectangular light spot has good light intensity, perfectly matching the target detection area and meeting the lighting requirements of the target detection area.

[0053] ② Excellent light field uniformity: Achieve uniformity of over 80% on a 2500mm target surface; (In the field of industrial machine vision inspection, the brightness of the edge area of ​​traditional surface light sources is usually less than 40% of the brightness of the central area, resulting in poor light uniformity. Generally, uniformity >70 is considered very good, and >80% is at an excellent level.)

[0054] ③ High-precision rectangular spot: The aspect ratio of the rectangular spot is precisely controlled at 2.33:1, with a rectangularity of up to 98.7%, effectively concentrating energy in the target area and achieving high energy utilization efficiency;

[0055] ④ Ultra-high energy density and efficiency: The ultra-high density COB light source 1 integrates 840 LED chips (density: 672 chips / cm²) in a tiny area of ​​50mm x 25mm, providing an energy density of 4000 watts / square meter [W / m2], with high energy utilization efficiency, making it suitable for high-speed strobe capture scenarios.

[0056] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-power rectangular surface light source for long-distance illumination, characterized in that, The device includes a mounting housing (5), which has a mounting cavity (50). An ultra-high density COB light source (1) is mounted on one side of the mounting cavity (50). A cooling component (6) for heat dissipation and cooling of the ultra-high density COB light source (1) is mounted on one end of the mounting housing (5). A first plano-convex lens (2) is provided on one end of the ultra-high density COB light source (1). A second plano-convex lens (3) is provided on one side of the first plano-convex lens (2). A third plano-convex lens (4) is provided on one side of the second plano-convex lens (3).

2. The high-power rectangular surface light source for long-distance illumination according to claim 1, characterized in that, The mounting housing (5) includes a mounting block (51) and a cylindrical housing (52) installed at one end of the mounting block (51). The mounting cavity (50) is opened inside between the mounting block (51) and the cylindrical housing (52). The cooling assembly (6) is installed on the mounting block (51). The ultra-high density COB light source (1) is installed on an inner side wall of the mounting block (51).

3. A high-power rectangular surface light source for long-distance illumination according to claim 2, characterized in that, The ultra-high density COB light source (1) includes a PCB board and several LED chips linearly arranged on the PCB board. The PCB board is 50mm x 25mm in size, and the number of the LED chips is 840.

4. A high-power rectangular surface light source for long-distance illumination according to claim 2, characterized in that, The cooling assembly (6) includes an inlet pipe (61) installed on one side of the outer wall of the mounting block (51), an outlet pipe (62) installed on the other side of the outer wall of the mounting block (51), and a heat dissipation pipe opened inside the mounting block (51) and connected to the inlet pipe (61) and the outlet pipe (62) respectively.

5. A high-power rectangular surface light source for long-distance illumination according to claim 1, characterized in that, The mounting cavity (50) includes a first cavity (501), a second cavity (502) disposed on the first cavity (501), and a third cavity (503) disposed on the second cavity (502). The ultra-high density COB light source (1) is attached to the side wall of the first cavity (501). The first plano-convex lens (2) is snapped onto the first cavity (501), the second plano-convex lens (3) is snapped onto the second cavity (502), and the third plano-convex lens (4) is snapped onto the third cavity (503).

6. A high-power rectangular surface light source for long-distance illumination according to claim 5, characterized in that, The first cavity (501) is provided with a first locking interface (5010) that matches the shape of the first plano-convex lens (2) and is used to lock the first plano-convex lens (2).

7. A high-power rectangular surface light source for long-distance illumination according to claim 5, characterized in that, The second cavity (502) is provided with a second locking interface (5020) that matches the shape of the second plano-convex lens (3) and is used to engage with the second plano-convex lens (3).

8. A high-power rectangular surface light source for long-distance illumination according to claim 5, characterized in that, The third cavity (503) is provided with a third locking interface (5030) that matches the shape of the third plano-convex lens (4) and is used to engage with the third plano-convex lens (4).

9. A high-power rectangular surface light source for long-distance illumination according to claim 1, characterized in that, The diameter of the first plano-convex lens (2) is less than the diameter of the second plano-convex lens (3) and the diameter of the third plano-convex lens (4).

10. A high-power rectangular surface light source for long-distance illumination according to claim 1, characterized in that, The mounting housing (5) has a power cord (7) that is electrically connected to the ultra-high density COB light source (1) on one side.

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