Spectral confocal displacement sensor is a device that establishes the corresponding relationship between distance and wavelength through the principle of optical dispersion, and uses the spectrometer to decode spectral information to obtain position information. The light emitted by the white LED light source can be approximately regarded as a point light source after passing through the fiber coupler, and spectral dispersion occurs after collimation and focusing through the dispersive objective lens. A continuous monochromatic light focus is formed on the optical axis, and each monochromatic light focus has a different distance from the measured object.

When the measured object is in a certain position within the measurement range, only a certain wavelength of light is focused on the measured surface. Because the confocal condition is met, the wavelength of light can be reflected back to the fiber coupler from the surface of the measured object and enter the spectrometer, while other wavelengths of light are in a defocusing state on the surface of the measured object, and the distribution of reflected light at the source is much larger than the diameter of the optical fiber core. So most of the light doesn't get into the spectrometer. The wavelength value of the maximum light intensity is decoded by the spectrometer, and the corresponding distance value of the target is measured. Due to the confocal technology, the method has good chromatographic characteristics, improved resolution, and is not sensitive to the characteristics of the measured object and stray light.

Lihe Technology is a private high-tech enterprise with precision optical detection as the main business, spectral confocal displacement sensor and its application as the main product, from the beginning of its establishment to create a high standard spectral confocal displacement sensor and reduce the cost of popularization and promotion as the ambition, bringing together optical, mechanical, software talents and partners in the field of spectral confocal work day and night. Developed the proprietary intellectual property rights of precision spectral confocal displacement sensor commercial product series, master the core technology, break the blockade to make up for the gap, more Guan Pu confocal information welcome to pay attention to Liyi Technology.