What are the two measurement modes of spectral confocal? By analyzing the focusing position of different wavelengths of light on a specific surface, spectral confocal measurement technology can achieve high precision dimensional measurement and microscopic morphology analysis. According to this measurement principle, a specific wavelength of light can be focused on the front end of the sample, while for a transparent material sample, two different wavelengths of light can be focused on the positive and negative sides of the sample. The following Shenzhen Liyi spectral confocal manufacturers to talk about the two measurement modes of spectral confocal is what:

1. Thickness measurement mode

When measuring transparent samples such as glass and lenses, two light beams of different wavelengths are focused on the positive and negative surfaces of the sample, and the thickness of the sample can be calculated by introducing the refractive index parameter of the sample. Compared with traditional contact measurement tools such as vernier calipers, spectral confocal measurement has all the advantages of non-contact optical measurement, and the sample thickness can be obtained through unilateral measurement.

The refraction coefficient directly affects the accuracy of the thickness measurement data, so the refractive index of the sample should be determined at the beginning of the measurement. The refractive index can refer to the refractive index of the same material, but if the thickness measurement results are to be obtained with higher precision, the refractive index meter is needed to measure the refractive index of the sample.

2. Displacement measurement mode

The displacement measurement model outputs the height value in the Z direction, and the point cloud coordinates can be directly output by introducing the displacement of XY. This model is consistent with three coordinate, structured light and laser triangulation methods. The difference is that spectral confocal supports the measurement of reflective surfaces with sub-micron measurement accuracy.

The displacement measurement mode is suitable for most precision dimensional measurement scenarios and provides a variety of sampling options for point, line and surface measurements. Point measurement is suitable for measuring object vibration and liquid height, and outputs Z-direction values of different time series to aid analysis. Linear measurement can continuously record the Z-direction value of the moving sample surface, which can be used for fault error detection and two-dimensional dimensional analysis. Surface measurements provide complete 3D topography data of the sample surface for comprehensive analysis, including roughness and other items.

This is an introduction to the two measurement modes of spectral confocal. The two measurement modes of spectral confocal can be switched freely on the software interface without restarting the device or system. Therefore, whether it is the measurement of the surface size of the sample, the thickness of the transparent material, or the acquisition of the apparent size and thickness information of the transparent sample at the same time, the spectral confocal measurement technology can be handled calmly. Shenzhen Liyi Technology Co., Ltd. is a professional production and sales of displacement sensor, laser displacement sensor, Angle displacement sensor, spectral confocal sensor company, in need of friends can call to consult Liyi fiber coaxial displacement sensor manufacturers. Welcome your call!