As an instrument for measuring film thickness, film thickness gauge has been widely used in many industries, especially optical film thickness gauge. Due to its high measurement accuracy, non-contact, and no need to damage the sample, it is loved by many enterprise users and university teachers. Today, we will mainly give a brief understanding of optical film thickness gauge.
< 1> Advantages of Optical Film Thickness Gauge
1. Non contact measurement
The principle used by the optical film thickness gauge is to measure the thickness of the film layer through the principle of light reflection, which is a non-contact measurement method that will not cause any damage to the sample and can ensure the integrity of the sample.
2. Diverse measurement data
It can measure the film thickness and n, k data of an object
3. Fast measurement
The measurement process of optical film thickness gauge is very fast because the structural design of the equipment can greatly improve the measurement efficiency.
4. Wide applicability
The application range of optical film thickness gauge is very wide, from ordinary household use to industrial production in factories, as well as university laboratories and scientific research institutes. It can be seen that it has a wide range of applications and can be used in more diverse situations.
< 2> Precautions for using optical film thickness gauge
1. Zero point calibration
Optical calibration is required before each use of the film thickness gauge, as previous measurement parameters can affect the measurement of the object. Zero point calibration can eliminate the influence of parameters in the previous measurement, reduce measurement errors, and make the measurement results more accurate.
2. The thickness of the substrate should not be too thin
When using an optical film thickness gauge to measure objects, the substrate should not be too thin, otherwise it will affect the measurement accuracy of the instrument, cause inaccurate data results, and affect the normal progress of the measurement process.
3. Surface roughness of objects
The surface of the object being measured should not be too rough, as rough surfaces can easily cause light diffraction, reduce the measurement accuracy of the optical film thickness gauge, and cause significant errors. So the surface of the object being measured should be kept as smooth as possible to ensure the accuracy of the measurement results.
We have already provided a specific introduction to the advantages and usage precautions of optical film thickness gauges in the above content. If you want to further understand optical film thickness gauges, please contact us and have one-on-one communication with our engineers.
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