A technological breakthrough: The independently developed first spectral confocal displacement sensor with independent input and output light, and a separate optical fiber channel, reducing optical path interference by more than 50% compared to traditional optical fibers, solving a problem that has plagued the industry for decades. The highest testing accuracy reaches the sub-micron level, capable of measuring transparent films as thin as 8μm. Ultra-high measurement accuracy is industry-leading, with product resolution reaching the 1nm level. An independently developed spectral confocal lens with a static repeatability of 10nm, a spot size as small as 3μm, and a clearer optical path, allows for precise separation of surface and back-reflected light from ultrathin film samples. High stability: The independently developed optical structure possesses a stable and precise optical system, ensuring stable measurements even in harsh environments. High-efficiency and accurate peak acquisition and filtering algorithms are employed. Peak wavelengths can be accurately and quickly acquired, ensuring the linearity of the spectral confocal sensor's measurement accuracy.