Dongguan Samson Optoelectronics Technology Co., Ltd, with its strong R&D and service team, together with its own successful experience in inspection and automation for many years, has been committed to developing new automated inspection technologies for customers to solve all their product automation measurement problems. Below are two of the company's newly developed glass inspection equipment.

Figure: 3D curved glass inspection curved surface profile equipment (source Samson)

It works by using CCD to position the product, establish the XY coordinate system of the product, then by spectral positioning, finally establish the XYZ 3D coordinates of the product, and according to the scanning path set by the software, scan the 3D contour data information of the product by single or multiple spectral confocal optical pens, then compare it with the 3D digital model of the product, and automatically determine whether the product is qualified or not. The SCG-190 inspection system is the best choice for 3D glass contouring, roughness and shape metrology.

4、Application areas.

Table 1 The parameters of the equipment are tabulated as follows.

In addition to the size, contour and other testing, for the 3D glass defects detection has been the industry's testing difficulties, we recently visited the industry's leading automated testing company: Dongguan Samson Optoelectronics Technology Co.

SAG-190 glass appearance inspection equipment

In order to accelerate the development of surface inspection equipment, Samson has entered into a strategic partnership with Shenzhen Nayan Technology Co Ltd and V-TEC Japan to develop the industry's high-end glass appearance inspection equipment.

This device uses multiple high pixel line scan cameras and a special combination of LED light sources to acquire high definition images and then uses a special Mura algorithm for in-line high speed inspection by means of an intelligent image processor. It is based on the principle of using a special 3D multi-angle light source (patented product) and a special Mura detection algorithm (patented product) to detect a variety of different defects on glass covers. It has an original solution for defects on the P-side and R-angle of 2.5D glass in particular, and also supports the detection of defects on 3D mobile phone glass covers. Its developed mobile phone glass panel detection algorithm has a number of invention patents, does not require the CAD design pattern of the mobile phone glass cover and traditional template matching, with adaptive, can be automatically identified and classified according to the different areas of the cover .

Cover glass in the process of production requires a series of special processing processes such as opening, CNC, polishing, ultrasonic cleaning, vacuum forging film, tempering, silk screen printing and other products made . It is laminated to the surface of the touch screen as a protective screen and beautify the role of the product. Therefore, product surface defects detection requires high detection accuracy and reliable lighting effect to do guarantee.

Table 2 Equipment parameters are tabulated as follows：

Inspection items include: scratches in the window area, scratches in the screen printing area, defective P surfaces (scuffs, scratches, foreign colours, edge chipping), foreign colours in screen printing (dirty foreign colours, lack of foreign colours in pearl powder, foreign colours in oil shrinkage), Logo area and camera hole area, defective screen printing and other cosmetic defects. It has two important features：