Machine vision based LED detection device and detection method thereof
A detection device and detection method technology, applied in the direction of testing optical properties, etc., can solve the problems of not supporting simultaneous detection of multiple LEDs, not suitable for large-scale application in production lines, low detection efficiency, etc., achieving low cost, improved stability, and cost saving Effect
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Embodiment 1
[0039] Such as Figure 1 to Figure 3 Shown is an embodiment of the machine vision-based LED inspection device of the present invention. Such as figure 1 , figure 2 As shown, the LED detection device includes a carrier board fixture 1 for placing the LED to be tested, a dark box 2 and an industrial computer 3. An industrial camera 21 connected to the industrial computer 3 is arranged in the dark box 2. The industrial camera 21 is arranged on the dark box 2. The camera bracket 22 inside is fixedly supported, the industrial camera 21 is provided with a fixed-focus lens 23, and the camera obscura 2 is also provided with a light-condensing plate 24 arranged at the front end of the fixed-focus lens 23, and three positioning lights with different colors are arranged on the plane of the light-condensing plate 24. 25 , a through hole 26 is set in the plane of the coordinate system formed by the positioning light 25 , and the carrier fixture 1 is connected to the through hole 26 thro...
Embodiment 2
[0045] The present invention is the embodiment that adopts the detection method of above-mentioned LED detection device based on machine vision, comprises the following steps:
[0046] S1. The LED to be tested lights up and emits light, and the LED light is transmitted to the light collecting plate in the dark box through the conductive fiber;
[0047] S2. The industrial camera collects the original image on the condensing plate and transmits it to the industrial computer through the Gigabit network card;
[0048] S3. The industrial computer preprocesses the collected original image, and first recognizes three color positioning lights with red, green and blue colors respectively;
[0049] S4. The industrial computer calculates the region of interest after obtaining the positioning light, and maps this area to the original image, and further recognizes the position coordinates of the three colored positioning lights through the principle of three primary colors; after the posit...
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