In the late 1990s, the rapid development of digital technology has increasingly penetrated into various fields. With the continuous expansion of the Internet to ordinary families at the beginning of this century, the trend of integration of consumer electronics, computers and communications has become increasingly obvious. More and more 3C products have entered the society and family. From electric vehicles and household appliances to smart phones and smart wear, they have been integrated into the whole 3C product field.
During this period, non-contact measurement methods are more and more used in the field of parts measurement of 3C products, and the measuring instrument dominated by non-contact measurement equipment is also well known and recognized by the majority of users at this stage, and ushered in rapid development and progress, which is applied in the quality control process by more and more top manufacturers.