How to measure the thickness of glass substrate by spectral confocal

Glass substrates are often seen in many display components in our life and work , This is a thin piece of glass with a flat surface , The thickness of glass substrates currently in commercial use 0.7 mm And 0.5m m, There are also ultra-thin glasses used in special fields , Therefore, the accuracy requirement is very high .

How to measure the thickness of glass substrate by spectral confocal

So how to measure the thickness of glass substrate ？

The traditional contact measurement can not guarantee the accuracy , And it is easy to cause secondary damage to the glass surface , So what can I do ？2014 In, Shenzhen Liyi Technology Co., Ltd. independently developed and processed the non-contact measurement spectral confocal displacement sensor . The spectral confocal sensor has high precision 、 high stability 、 Big angle 、 High sampling frequency and other measurement characteristics , For plastic film 、 glass 、 A transparent or opaque mirror, such as a specular metal / Semi specular reflective material , And multi-layer transparent material thickness measurement has unique advantages .

The spectral confocal sensor can meet the measurement requirements of different materials , Single probe thickness gauge or double probe can be used for measurement . Most transparent materials are measured with a single probe .

How to measure the thickness of glass substrate by spectral confocal

Because the glass substrate is very thin , And the thickness and size control is very strict , Generally in 0.01mm The tolerance of , It mainly measures the thickness of glass accurately 、 Warpage and parallelism . Use vertical instrument Spectral confocal The sensor solves this problem and prevents secondary damage .