Mobile 3D Glass Solution
From the 2G era in the 1990s to the rise of 4G networks around 2010, the communication world has evolved in almost a decade. 5G networks will be officially commercialized in 2020. And mobile phones, as a representative product of the communication world, are also making new changes to welcome the arrival of the new communication era. At 1am Beijing time on September 13, 2017, the industry giant Apple released a brand new iPhone series with a fully glass body design
3D curved glass mainly has physical characteristics such as light and thin, transparent and clean, anti fingerprint, anti glare, hardness, scratch resistance, and weather resistance; From an appearance perspective, the curved edges of curved glass are higher than the center frame, making the entire screen appear fuller and visually superior to regular 2D screens; From the perspective of touch feel, the curved glass smoothly docks with the center frame 180 degrees, which is more in line with ergonomic principles and greatly improves the touch feel of the sliding screen. At present, 3D curved glass is mainly used for protective screens and back covers of mobile phones.
As quality control personnel, we have to consider a question: how to ensure the production process of 3D curved glass and provide fast and full-size inspection solutions?
At present, the detection on the market is mainly based on contact scanning measurement and 3D laser scanning measurement. For contact scanning measurement, its advantage is high measurement efficiency, with a single glass measurement time of about 1-2 minutes and high measurement accuracy of the equipment, ranging from 1-2 micrometers. However, due to the use of contact based methods, there is inevitably a force measurement factor that affects the measurement results and can easily cause small scratches on the surface of the product. For 3D laser scanning measurement, its advantage lies in the use of non-contact measurement methods, which avoid damaging the surface quality of the product, and comprehensively scan the product surface, reflecting the actual condition of the workpiece more realistically. However, due to the inability of lasers to measure transparent glass, it is necessary to sprinkle imaging agents on the surface of the product, which undoubtedly brings measurement errors. Secondly, the accuracy of such equipment itself cannot meet the application requirements, generally between 0.01 and 0.02mm. In addition, the measurement efficiency is low, and the scanning time of a single piece of glass is about 8-10 minutes, which cannot meet the production and measurement needs.
So for this situation, we have to think about whether there are other solutions that can meet such needs? Firstly, we hope that 3D curved glass can be measured non-contact, and secondly, we must meet the four basic principles of high efficiency, high precision, low cost, and full size measurement.
Based on the above requirements, the Zeiss 3D curved glass measurement solution consists of CALYPSO measurement software and a composite coordinate measuring machine equipped with a high-precision turntable with four-axis linkage, a high-precision contact scanning side head, a high-precision confocal white light measuring head, and a CCD measuring head.
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