CHIOPT 3D profilemeter for reflective freeform surface

2022-09-30

With the increase in production capacity and the integration of supply chains in the smart terminal market in China, especially in the Pearl River Delta, the inspection industry of glass cover plates is bound to usher in explosive growth. The emergence of innovative glass cover plate inspection equipment is urgently needed.

As one of the most important components of smart terminal products, glass cover plate manufacturing has huge market stock and growth potential, and is the focus of competition among many countries and enterprises. The production process of glass cover plates is complex, especially after entering the era of 2.5D and 3D cover plates, due to the introduction of more complex processes and the continuous improvement of the final customer's appearance requirements, various kinds of products will inevitably occur in the production process. Defects with different characteristics are common, such as scratches, pits, poor silk screen, impurities, different colors and other appearance defects. Defects of various features require the inspector to constantly flip the cover and capture it under some specific light angles or viewing angles. This places very high demands on the design and manufacture of automated glass cover inspection equipment to replace manual visual inspection.

3D profilemeter for reflective surface capable of inspecting glass surface defects and scanning transparent materials (mobile phone glass cases, automotive glass, etc.). In this sense, it essentially belongs to a stereo measurement technology. Compared with the traditional technology, it can complete the three-dimensional measurement of the point and profile of the complex shape, realize the non-contact measurement, and has the advantages of high speed and high precision. These characteristics determine that it can play an important role in many fields, and its measurement results can be directly interfaced with a variety of software. Today, it has been widely used in various fields.

Measurement of 3D profile) with the challenging task is to accurately measure the surfaces of various highly reflective parts. Due to the characteristics of materials, highly reflective objects often have problems such as high light reflection and high light ratio on the surface, resulting in overexposure in the highly reflective areas in the entire captured image. Areas are underexposed, images are degraded, and texture details are lost. When the traditional structured light method is used for measurement, a large area of data holes appears in the reconstruction results.

3D measurement for reflective surface the most commonly used method is often referred to as High-Dynamic Range (HDR, High-Dynamic Range) technology.

It is a high-precision general-purpose measuring device that can measure aspheric surfaces, free-form surfaces and special optical components. It combines a touch-sensitive probe with an optical sensor, automatic centering and leveling, calibration and definition of coordinate systems. Automatic real-time error compensation . By actively tracking and measuring unknown contours, one device simultaneously measures object shape, contour and roughness. It is specially developed and designed for reliable surface inspection of mirror free-form surfaces, and can reliably detect shape deviations and appearance defects of reflective parts that are invisible to the naked eye.

Product Features:

1. Geometric information: height map, curvature, slope, comparison with CAD, etc.

2. Support 3D measurement point cloud output

3. Support point cloud matching (measure point cloud and surface formula)

4. Support height error, slope error, curvature error output

5. Defect inspection: bumps, scratches, ripples, distortion, etc.

软件实测效果图.jpg