Zeiss: Mobile 3D Glass Solution

From the 2G era in the 1990s to the rise of 4G networks around 2010, the communications world has evolved in an era of almost 10 years. The 5G network will be officially commercialized by 2020. The mobile phone, as a representative product of the communication world, is also making new changes to meet the arrival of the new communication era. At 1 am on September 13, 2017, Beijing time, the industry giant Apple released a new iphone series products with a full glass body design.
3D curved glass mainly has physical characteristics such as light and thin, transparent and clean, anti-fingerprint, anti-glare, hard, scratch resistant, weather resistant; from the appearance, the curved edge of curved glass is higher than the middle frame, and the whole screen is more Full, the visual effect is obviously better than the ordinary 2D screen; from the touch feel, the curved glass and the middle frame are smoothly docked 180 degrees, which is more ergonomic and greatly improves the feel of the sliding screen. Currently 3D curved glass is mainly used in the protective screen and back cover of mobile phones.
As a quality control, we have to think about one question: how to ensure the production process of 3D curved glass and provide a fast and full-scale inspection solution?
At present, the detection on the market is mainly based on contact scanning measurement and 3D laser scanning measurement. For contact scanning measurement, the advantage is that the measurement efficiency is high, the measurement time of the single piece of glass is about 1-2 minutes and the measurement precision of the device is high. The accuracy is between 1-2 microns. However, due to the contact type, there must be factors of force measurement, which affect the measurement results and easily cause small scratches on the surface of the product. For 3D laser scanning measurement, the advantage is that the non-contact measurement method avoids the surface quality of the broken product, and comprehensively scans the surface of the product to more realistically reflect the actual condition of the workpiece. However, since the laser cannot measure the transparent glass, it is necessary to sprinkle the developer on the surface of the product, which undoubtedly brings errors to the measurement. Secondly, the accuracy of the device itself cannot meet the application requirements, generally between 0.01 and 0.02 mm. . 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 requirements.
So for this situation, we have to think about whether there are other solutions to meet such needs? First of all, we hope that 3D curved glass will adopt non-contact measurement, and secondly, it must meet the four basic principles of high efficiency, high precision, low cost and full size measurement.

Based on the above requirements, Zeiss 3D curved glass measurement solution is composed of CALYPSO measurement software and high-precision turntable with four-axis linkage, high-precision contact scanning side head, high-precision confocal white light probe and CCD probe. Machine composition.


The ZEISS composite coordinate measuring machine on the hardware perfectly combines multiple sensors and is equipped with a high-precision four-axis linkage turret. Under the same clamping method and the same coordinate system, the full-size, high-precision and high-efficiency measurement of 3D curved glass is realized. The 3D size and coordinate system can be established by means of a contact probe; CCD image measurement can be used for the 2D size involved; non-contact confocal white light measurement is used for 3D contour, thickness and flatness of the glass surface. Perfectly solves the surface scratches caused by contact measurement.

ZEISS uses the high-performance CALYPSO measurement platform as the most widely used measurement software in the world. ZEISS CALYPSO perfectly combines 3D and 2D dimensional measurement functions with excellent profile analysis capabilities, giving visual evaluation results for the contour of curved glass, further guiding process improvement, equipment processing, and ensuring the quality of the production process. .


Contour graph report of 3D curved glass of mobile phone using confocal white light

Of course, as a general-purpose high-precision measuring device, the ZEISS O-INSPECT composite coordinate measuring machine can be applied not only to the detection of 3D curved glass, but also to all geometrical tolerances of complex workpieces such as precision machining, precision molds, and injection molding products. Measurement. High-precision contact scanning probe, 12x zoom image probe, confocal white light probe and high-precision four-axis linkage turntable make it easy to handle complex workpieces.

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