Transparent/translucent coating inspection

       In the field of precision measurement for the detection of small-sized materials, due to the complex internal materials, especially some highly reflective and transparent materials, traditional detection methods cannot meet the needs of industrial-grade high-precision detection. If the operating efficiency of the detection equipment is improved, the accuracy will be higher. , The stability is stronger, then the improvement of the yield rate will inevitably lead to a substantial increase in output. For example, 3C electronic products have an important production process for coating, and the quality of the colloidal coating is directly related to the quality of the product. Therefore, the detection colloid is an indispensable part of production. In the past, the quality of the colloid was inspected by the staff under the fluorescent lamp. It was necessary to detect the width of the glue, broken glue, leaking and other defects, but the accuracy and efficiency could not be guaranteed. The machine vision system is used to solve the glue detection problem, forming an integrated process of glue robot, online visual inspection, and spraying inspection, complete the inspection with high precision and high efficiency, and solve the long-term glue problem of customers.

       The 3D line confocal sensor HPS-LCF1000, which is one of the core components of the visual precision detection intelligent sensor, uses the principle of spectral confocal method and uses a special confocal optical device to emit a broad spectrum of light from the light source. The polychromatic light (white), through the dispersive lens, produces spectral dispersion, and forms single-color light of different wavelengths within the range. The focal point of each wavelength corresponds to a distance value. The measuring light hits the surface of the object and is reflected back. Only the light of a single color that meets the confocal condition can be sensed by the spectrometer through the small hole. By calculating the wavelength of the focal point detected by the induction test, the distance value is obtained by conversion. The spectroscopic confocal method can ensure that even if the measured object is tilted or warped, it can be accurately measured, and the measurement point will not change. Because the intensity of the reflected light only depends on the degree of reflection of the reflective object, which means that no matter how much reflected light is reflected from the measured object, it will not affect the measurement result, so the measured distance result may not change, so use the spectrum Confocal sensor detection, even if the measured object is a strong light-absorbing material or a transparent material, accurate and reliable measurement can be carried out. This is precisely the biggest shortcoming of traditional laser sensors that use red lasers for triangular reflection. The Hyberson Spectroscopy Confocal Sensor can effectively avoid the disadvantages of excessive detection errors caused by light refraction. In the glue detection of transparent/translucent materials, it can perfectly realize the waterproof glue of mobile phones, LED chip glue, and PCB surface glue layer. Scanning and inspection applications in scenes such as defect detection.

△Picture: 3D line confocal sensor detects the height and diameter of the rubber ball△

       The Hypersen's 3D line confocal sensor has the industry’s fastest 35000 lines/second ultra-high scanning rate, which can quickly complete the online full inspection of the measured object, greatly improving work efficiency; in addition, a detailed point cloud can be obtained in one scan Coordinate data can realize 3D imaging analysis of object size, surface roughness, gap and other characteristics, and realize multi-directional 3D measurement of object surface. What's more worth mentioning is that this sensor adopts 2048 dots/line, minimum 2μm interval design, Z-axis resolution is only 0.3um, which can fully realize accurate measurement of various industrial precision materials. Therefore, in the glue inspection industry, compared with traditional laser displacement sensors, the Hypersen confocal sensor series has its incomparable advantages.

△Video: 3D line confocal sensor detects 20um drop glue height and diameter△

△Video: 3D line confocal sensor detects the height of the glue surface of the circuit board△

       The Hypersen's Spectroscopic Confocal Sensor is mainly used in the precision measurement of the surface size and contour of the small parts and materials in the production process of industrial manufacturing. In addition to the colloidal detection described above, it can realize the application of highly reflective materials, such as glass planes. It can also realize the application of strong light-absorbing materials, such as black rubber parts, etc. For more information, you can log in to the official website to browse product information, industry applications and watch more product introduction videos.