High-precision measurement of film thickness is crucial in its manufacturing process. It is not only related to process quality, but also directly affects the performance of the final product. Therefore, to ensure the excellent quality of each piece of material, accurate measurement of film thickness is indispensable;
AKUSENSE relies on ultra-high-precision measurement parameters and multi-layer film measurement capabilities to meet the film measurement needs of all walks of life. In this issue, Xiao Ming will share the role of Meiji sensing in the precision measurement of multi-layer films~
Testing requirements
Material tested: PET multi-layer film
Need to detect: the thickness of the two layers of film and the thickness of the central air sandwich
Accuracy requirement: 1um
solution
1. Use the spectral confocal instrument ADV-12CKS to complete the online measurement of film thickness. It can detect up to 5 displacement surfaces and 4 layer thicknesses.
2. Spectral confocal principle. The color confocal displacement sensor uses a special color-coded lens to produce axial dispersion output of visible light and the confocal return signal is analyzed by a spectrum analyzer. The measured object is calculated through the conversion relationship between wavelength and displacement. The actual position value, the measurement effect is more accurate
3. Select the ACC-008L probe according to the range and accuracy requirements. The minimum resolution is 0.02um and the linearity is ±0.15um.
4. There are rich communication interfaces, including analog, 232, network port communication, encoder control, etc.
5. 4KHz sampling frequency can achieve high-efficiency detection
