With the development of Germany's "Industry 4.0" and America's "Industrial Internet," our country has also proposed "Made in China 2025" to address the Fourth Industrial Revolution [14]. The primary goal of "Made in China 2025" is intelligent manufacturing, which must integrate a high degree of automation, digitalization, and networking. In the future, China will experience rapid development in automated production and the visual inspection industry [15]. Over the next period, an increasing number of domestic factories will extensively introduce automated equipment. Considering current customer demands and the actual production status of factories, smartphone-related equipment will account for a significant proportion. For instance, processes from front-end screen cutting, cleaning, and inspection to later stages like finished product assembly, exterior cleaning, and inspection [16] can all be accomplished using automated equipment.

1.2.1 Current Status of Domestic and International Research on Inspection Equipment

Abroad, factories exhibit a high degree of intelligence, with many operations completed using automated equipment. In recent years, with the development of