An LED detection device

Abstract

This utility model discloses an LED detection device, belonging to the technical field of LED detection. It includes a housing, on which a detection camera and a movable block are mounted. The lens of the detection camera is positioned facing the movable block. The movable block is equipped with multiple filter components for filtering light of different wavelengths. The movable block can move relative to the detection camera to switch the filter component facing the lens. This application, by driving the movable block to move relative to the detection camera, switches different filter components to align with the camera lens, thereby enabling the detection camera to filter light of different wavelengths as needed during shooting, effectively reducing light interference and improving detection accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of LED testing, and in particular to an LED testing device. Background Technology

[0002] LEDs (light-emitting diodes) have been widely used and recognized in the lighting and display fields due to their excellent energy efficiency, long lifespan, and environmental friendliness. With the rapid development and popularization of LED technology, its production scale continues to expand, leading to a corresponding increase in the demand for quality testing of LED products.

[0003] In the LED production process, LED testing is a crucial step in ensuring the quality of the final product. However, in actual production, LED boards typically integrate a large number of LED chips, which may emit different colors of light. Therefore, when testing is required for one type of LED chip on the LED board, the light emitted by the other chips can interfere with the testing process. This not only increases the difficulty of testing but may also lead to deviations and inaccuracies in the test results. Utility Model Content

[0004] The main purpose of this invention is to propose an LED detection device that aims to solve the problem of light interference during existing LED detection.

[0005] To achieve the above objectives, this utility model proposes an LED detection device, including a housing, a detection camera and a movable block disposed on the housing, the lens of the detection camera being positioned facing the movable block, and the movable block being provided with multiple filter components for filtering light of different wavelengths, the movable block being movable relative to the detection camera to switch the filter component facing the lens.

[0006] In some embodiments, the light filtering assembly consists of a first filter and / or a second filter, wherein the first filter and the second filter filter light wavelengths that are different.

[0007] In some embodiments, the movable block is provided with a plurality of mounting holes, and a first filter and / or a second filter are mounted in the mounting holes.

[0008] In some embodiments, the first filter is an IR-cut filter and the second filter is an IR-pass filter.

[0009] In some embodiments, the slide rail is provided with multiple positioning holes, and the movable block is provided with positioning balls that match the positioning holes, for locking the movable block on the slide rail.

[0010] In some embodiments, the slide rail is an electric guide rail, which drives the movable block to move relative to the detection camera.

[0011] In some embodiments, a lens hood is also provided on the lens, the lens hood being located between the lens and the movable block.

[0012] In some embodiments, additional devices connected to the detection camera are also included for displaying images captured by the detection camera.

[0013] In some embodiments, the other device is a computer used to receive and process images captured by the detection camera.

[0014] This invention proposes an LED detection device, including a detection camera and a movable block disposed within a housing. Multiple light filter components are disposed on the movable block, each of which is used to block light of a specific wavelength. By driving the movable block to move relative to the detection camera, different light filter components are switched to align with the lens of the detection camera. This allows the detection camera to filter light of different wavelengths as needed during shooting, thereby effectively reducing light interference and improving detection accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of the LED detection device of this utility model;

[0016] Figure 2 This is a schematic diagram of one embodiment of the LED detection device of this utility model;

[0017] Figure 3 This is a schematic diagram of one embodiment of the LED detection device of this utility model;

[0018] Figure 4 This is a schematic diagram of one embodiment of the LED detection device of this utility model;

[0019] Figure 5 This is a schematic diagram of one embodiment of the LED detection device of this utility model.

[0020] Explanation of icon numbers:

[0021] Housing 100; Detection camera 110; Lens 111; Light shield 112; Movable block 120; Filter assembly 121; Mounting hole 122; Slide rail 130; Computer 200; LED to be tested 300. Detailed Implementation

[0022] The solutions in the embodiments of this utility model 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 utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0025] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0026] This utility model proposes an LED detection device, including a housing 100, on which a detection camera 110 and a movable block 120 are disposed. The lens 111 of the detection camera 110 is positioned facing the movable block 120. The movable block 120 is provided with a plurality of filter components 121 for filtering light of different wavelengths. The movable block 120 can move relative to the detection camera 110 to switch the filter component 121 facing the lens 111.

[0027] Please see Figure 1 and Figure 5This application discloses an LED detection device, comprising a supporting housing 100, within which a detection camera 110 and a movable block 120 are disposed. A lens 111 is provided at one end of the detection camera 110, and the movable block 120 is positioned below the lens 111. The LED 300 to be detected is located below the movable block 120, and the detection camera 110 captures images of the LED 300 through a filter assembly 121 on the movable block 120. Specifically, multiple filter assemblies 121 are also provided on the movable block 120, each capable of filtering light of a different wavelength. The movable block 120 is movably mounted on the housing 100. By driving the movable block 120 to move relative to the detection camera 110 on the housing 100, different filter assemblies 121 can be switched to align with the lens 111 of the detection camera 110. The LED 300 to be tested typically integrates a large number of LED beads, and these LED beads can emit light of different colors. Therefore, when it is necessary to test one of the LED beads on the LED 300, by moving the movable block 120, the corresponding filter component 121 is aligned with the lens 111 of the detection camera 110. Only the light emitted by the LED bead to be tested can pass through, while the light emitted by the other LED beads is filtered, thereby reducing light interference and improving the accuracy of the test.

[0028] In some embodiments, the light filtering assembly 121 consists of a first filter and / or a second filter, wherein the first filter and the second filter filter light wavelengths that are different.

[0029] In some embodiments, the movable block 120 is provided with a plurality of mounting holes 122, and the first filter and / or the second filter are installed in the mounting holes 122.

[0030] In some embodiments, the first filter is an IR-cut filter and the second filter is an IR-pass filter.

[0031] like Figure 2 and Figure 3 As shown, in this embodiment, the filter assembly 121 may contain only a first filter, only a second filter, or both a first filter and a second filter. Three mounting holes 122 are provided on the movable block 120, and the filter assembly 121 is disposed within each mounting hole 122. Specifically, the filter assembly 121 in the first mounting hole 122 contains only a first filter, the filter assembly 121 in the second mounting hole 122 contains both a first filter and a second filter, and no filter assembly 121 is disposed in the third mounting hole 122.

[0032] In embodiments not shown in other figures, the movable block 120 may also have an additional mounting hole 122, within which the filter assembly 121 contains only a second filter. By providing multiple mounting holes 122 on the movable block 120, different filter assemblies 121 can be placed within them. When the movable block 120 moves relative to the detection camera 110, these mounting holes 122 pass through the position of the lens 111, thereby switching different filter assemblies 121 to align with the lens 111 as needed. When light filtering is not required, the mounting hole 122 without a filter assembly 121 can be switched to align with the lens 111 of the detection camera 110.

[0033] Specifically, the first filter is an IR-cut filter, and the second filter is an IR-pass filter. The main function of the IR-cut filter is to block infrared light but allow visible light in the wavelength range of 400 to 700 nm to pass through; conversely, the IR-pass filter blocks visible light but allows infrared light in the wavelength range of 700 to 1100 nm to pass through.

[0034] To facilitate understanding, let's take an LED 300 to be tested as an example. This LED 300 is equipped with first-type LEDs that emit visible light and second-type LEDs that emit infrared light. When the target is to detect the number of first-type LEDs that can emit light normally, since it is necessary to filter the infrared light emitted by the second-type LEDs, the operator can move the movable block 120 to align the filter assembly 121, which only has the first filter, with the lens 111 of the detection camera 110. Since the first filter is an IR-cut filter that can filter infrared light, the detection camera 110 is not affected by the infrared light emitted by the second-type LEDs. In this way, the image captured by the detection camera 110 can intuitively show the number and position of the first-type LEDs that can emit light normally.

[0035] Similarly, when the target is to detect the number of normally emitting LEDs in the second category, since the visible light emitted by the first category of LEDs needs to be filtered, the operator can move the movable block 120 to align the filter assembly 121, which only has the second filter, with the lens 111 of the detection camera 110. Because the second filter is an IR-pass filter, it can filter out visible light, so the detection camera 110 will not be interfered with by the visible light emitted by the first category of LEDs. In this way, the image captured by the detection camera 110 can clearly show the number and position of normally emitting LEDs in the second category. Furthermore, if the infrared light intensity emitted by the second category of LEDs is too high in certain situations, the operator can move the movable block 120 again to align the filter assembly 121, which simultaneously contains the first and second filters, with the lens 111 of the detection camera 110. This way, while filtering out the visible light emitted by the first category of LEDs, the intensity of the infrared light emitted by the second category of LEDs can also be appropriately attenuated, making it easier to observe, record, and analyze the detection results.

[0036] Currently, there are significant limitations to manual inspection of LEDs. First, because the wavelength of infrared light is outside the visible range of the human eye, operators cannot directly detect the status of the LED300 emitting infrared light with the naked eye.

[0037] Secondly, when the LED300 to be tested has multiple types of LED beads installed, the difficulty of manual inspection increases further. This is because the human eye is prone to visual fatigue after prolonged observation, which may make it difficult for inspectors to accurately distinguish different colored LED beads and determine which ones are emitting light normally. This visual confusion not only reduces the accuracy of the inspection but also affects its efficiency.

[0038] These limitations can be overcome by using the LED detection device proposed in this application. This application can accurately detect the state of the LED 300 emitting infrared light by equipping it with an IR-pass filter that filters out visible light, allowing only infrared light to pass through. In this way, the detection camera 110 can capture a clear infrared emission image, thereby enabling the detection of the LED emitting infrared light. Similarly, by equipping it with an IR-cut filter that filters out infrared light, the LED 300 emitting visible light can be detected, eliminating interference from infrared light.

[0039] Furthermore, for LEDs 300 with multiple colors to be tested, this application can align the lens 111 of the detection camera 110 by switching different filter components 121. Since different colors of light have different wavelengths, the filter components 121 can selectively allow light of a specific wavelength to pass through, thereby filtering out other colors of light. This allows the operator to directly observe which color of LED on the LED 300 is emitting light normally. Specifically, when it is necessary to filter different colors of light, the first and second filters constituting the filter components 121 can also be narrowband filters used to filter light of a specific wavelength.

[0040] In embodiments not shown in other figures, the movable block 120 may also be a plate-like structure composed of multiple filter components 121. For ease of understanding, taking a movable block 120 composed of three filter components 121 as an example, these three filter components 121 are arranged in a straight line, corresponding to the front, middle, and rear sections of the movable block 120. Adjacent filter components 121 are connected together, and these three filter components 121 can filter different wavelengths of light. By driving the movable block 120 to move, the front, middle, and rear sections of the movable block 120 pass the position of the lens 111, thereby switching the filter component 121 directly facing the lens 111.

[0041] In some embodiments, the slide rail 130 is provided with a plurality of positioning holes, and the movable block 120 is provided with positioning balls that match the positioning holes, for locking the movable block 120 onto the slide rail 130.

[0042] In some embodiments, the slide rail 130 is an electric guide rail, which drives the movable block 120 to move relative to the detection camera 110.

[0043] like Figure 1 and Figure 3 As shown, a slide rail 130 is provided on the housing 100, and a movable block 120 is located within the slide rail 130 and can move along the slide rail 130. In use, the operator only needs to move the movable block 120 to switch between different filter components 121 aligned with the lens 111 of the inspection camera 110. To ensure that the movable block 120 remains stable within the slide rail 130 after a filter component 121 is selected, multiple positioning holes are provided on the slide rail 130, and correspondingly, the movable block 120 is equipped with positioning balls that match these positioning holes. Through the cooperation of the positioning balls and the positioning holes, the movable block 120 is locked to the slide rail 130, thereby keeping the selected filter component 121 aligned with the lens 111, ensuring the reliability and stability of the inspection process.

[0044] In other embodiments, the slide rail 130 can also be an electric guide rail, with the movable block 120 mounted on it. The electric guide rail provides power to drive the movable block 120 to make precise movements to switch the filter assembly 121 aligned with the lens 111. This configuration not only improves the convenience and efficiency of operation but also further enhances the accuracy and stability of the entire detection process.

[0045] In some embodiments, a light shield 112 is also provided on the lens 111, and the light shield 112 is located between the lens 111 and the movable block 120.

[0046] like Figure 4 As shown, a light shield 112 is also provided on the lens 111 of the detection camera 110. One end of the light shield 112 is fixed to the lens 111, and the other end abuts against the movable block 120. The purpose of the light shield 112 is to prevent light from the external environment from entering through the gap between the filter assembly 121 and the lens 111, so as to reduce the interference of external light on the detection process and ensure the reliability of the detection process.

[0047] In some embodiments, other devices connected to the detection camera 110 are also included for displaying images captured by the detection camera 110.

[0048] In some embodiments, the other device is a computer 200, used to receive and process images captured by the detection camera 110.

[0049] like Figure 5 As shown, the inspection camera 110 can also be connected to other devices, such as a display screen. The inspection camera 110 can transmit the captured images to the display screen, allowing operators to view the inspection results more intuitively and clearly. Furthermore, when the inspection camera 110 is connected to the computer 200, the computer 200 can use corresponding software to perform more in-depth processing and analysis on the images captured by the inspection camera 110.

[0050] For example, operators can flexibly set the inspection area on the computer 200 according to actual inspection needs. Since the inspection camera 110 typically has a large shooting range, while the actual inspection area may be relatively small, this function is particularly important. By precisely selecting the inspection area, operators can target a specific area on the LED 300 to be inspected, improving the targeting and efficiency of the inspection. Simultaneously, the computer 200 also allows operators to set areas not to be inspected. For instance, when a certain area on the LED 300 does not need to be inspected, or when a component has strong reflections that may interfere with the inspection results, operators can set these areas as non-inspection areas, effectively avoiding unnecessary interference and further improving the accuracy and reliability of the inspection.

[0051] In summary, this application proposes an LED detection device, including a detection camera 110 and a movable block 120 disposed within a housing 100. Multiple filter components 121 are disposed on the movable block 120, each filter component 121 used to block light of a specific wavelength. By driving the movable block 120 to move relative to the detection camera 110, different filter components 121 are switched to align with the lens 111 of the detection camera 110. This allows the detection camera 110 to filter light of different wavelengths as needed during shooting, effectively reducing light interference and improving detection accuracy.

[0052] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. An LED detection device, comprising a housing, characterized in that, The housing is provided with a detection camera and a movable block. The lens of the detection camera is positioned facing the movable block. The movable block is provided with a plurality of filter components for filtering light of different wavelengths. The movable block can move relative to the detection camera to switch the filter component facing the lens.

2. The LED detection device according to claim 1, characterized in that, The filtering assembly consists of a first filter and / or a second filter, wherein the first filter and the second filter filter light wavelengths that are different.

3. The LED detection device according to claim 2, characterized in that, The movable block is provided with multiple mounting holes, and the first filter and / or the second filter are installed in the mounting holes.

4. The LED detection device according to claim 3, characterized in that, The first filter is an IR-cut filter, and the second filter is an IR-pass filter.

5. The LED detection device according to claim 1, characterized in that, The housing is also provided with a slide rail, the movable block is disposed in the slide rail, and the movable block can move along the slide rail.

6. The LED detection device according to claim 5, characterized in that, The slide rail is provided with multiple positioning holes, and the movable block is provided with positioning balls that match the positioning holes, which are used to lock the movable block on the slide rail.

7. The LED detection device according to claim 6, characterized in that, The slide rail is an electric guide rail, which drives the movable block to move relative to the detection camera.

8. The LED detection device according to claim 1, characterized in that, The lens is also equipped with a light shield, which is located between the lens and the movable block.

9. The LED detection device according to claim 1, characterized in that, It also includes other devices connected to the detection camera for displaying images captured by the detection camera.

10. The LED detection device according to claim 9, characterized in that, The other device is a computer, used to receive and process images captured by the detection camera.

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