Essilor, Zeiss, Tag Heuer, Seiko, Kemi, and Rodens are all very good. China's Suzhou (Suzhou) is the birthplace of my country's glasses. The production of glasses in Suzhou not only has a long history, but also plays a great role in promoting the development of my country's glasses industry. In the early years of Chongzhen in the Ming Dynasty (AD 1628), an outstanding technician appeared in the history of Suzhou glasses. His name was Sun Yunqiu, also named Wenyu and Sibin, who was originally from Wujiang. He has been diligent and studious since he was a child. At that time, he saw that people with poor vision were in pain, but "single-view" mirrors and the like were inconvenient to use. So he carefully developed a lens that could be permanently attached to his glasses. After repeated experiments, he used mechanical principles to invent and create a lens grinding machine - a pulley. This kind of tug-o-cart is the so-called classical processing method. It is turned by pedals and uses ore sand, white mud, brick dust, etc. as abrasives or polishing materials to grind the lenses into convex and concave lenses to adapt to the eye refraction. needs. Finally, he mastered the lens grinding technology and used natural crystal stones to grind lenses. At the same time, he also mastered the technology of "optometry" (optometry), developed presbyopia, myopia, farsightedness and other varieties as well as lenses of various luminosity according to people's age and different vision, and compiled a set of "eye-matching lenses" "The original optometry method is used for eye examination and matching. In this way, you can wear glasses according to your eyes without any loss of effect, and it is more convenient and comfortable to wear on your face to meet the needs of each person's vision. This is the beginning of independent optometry and glasses in our country. Later, Sun Yunqiu invented and developed optical lenses for different purposes, including hundreds of flower mirrors, mandarin duck mirrors, magnifying glasses, polygonal mirrors, phantom mirrors, and dozens of others. Since then, the glasses made by Sun Yunqiu have become famous all over the world. It is a pity that such a promising technical talent died of illness at the age of 33. However, he left behind a scientific and technological work called "History of Mirrors", which played an immeasurable role in promoting future generations of glasses manufacturing technology. After Sun Yunqiu, during the Qianlong and Jiaqing years of the Qing Dynasty, another glasses-making talent emerged in Suzhou, named Chu Sanshan. He further developed the technology of making glasses and was quite influential. Because Suzhou produced two outstanding technical talents for manufacturing glasses, Sun Yunqiu and Chu Sanshan, they promoted the formation and development of Suzhou's glasses industry at that time. In 1735, handmade workshops specializing in the production of glasses had appeared in Suzhou. By the Kangxi period of the Qing Dynasty, the production and sales of glasses had flourished in Beijing, Shanghai, Suzhou, Tianjin, Guangzhou and other places. Glasses have become a specialized commodity.