The core research and development staff of Polygraph Technology have more than ten years of experience in the field of laser displacement measurement and 3D scanning, and found that spectral confocal is more accurate and adaptable than laser. However, many foreign high-precision sensors restrict the export of Chinese technology. Aiming to create the world's best spectral confocal displacement sensor and reduce the cost of popularization and promotion, Lihe brings together first-class optical, mechanical, software talents and partners in the field of spectral confocal around the clock, grinding a sword for several years, developing the first set of commercial and serialized spectral confocal displacement sensors with independent intellectual property rights in China, breaking the blockade to fill the gap. And on the basis of the original foreign technology has been greatly improved and applied for a number of invention patents. At present, Liyi has a leading position in the field of domestic and international leadership.

On October 19, 2017, at the "3D Curved Glass & Full Screen Mobile Phone Summit" co-organized by China Communications Industry Association 3D Curved Glass Branch/Guangdong Touch Control and Application Industry Association/Sino-Swiss Exhibition/New Materials Exhibition in Shenzhen, Shenzhen Liyi Technology Co., Ltd. gave a speech PPT for the "Spectral confocal measurement technology of 3D Glass"