Glasses source and development

Glasses first appeared in 1289, Italian fiorentina, is mentioned to be a man referred to as armagh holder of optical residence as well as a living within the city of Pisa, Italy's invention from the skin. The American inventor Benjamin Franklin, with myopia and farsightedness, 1784 invented far and near visual and eyeglasses. In 1825, British astronomer George airy invented astigmatic eyeglasses. Many people think that, the Chinese people in 2000 many years back invented glasses. Our nation inside the Ming dynasty came in the center on the glasses. Ming wanli TianYiHeng in the remain green working day Zagreb, quantity two "Ai Dai" a cloud: "each see articles, vision faint tiredly, not to understand particulars, this eye mask, spirit don't arrive free, strokes of a Chinese character letter Ming. With silk damask league, tie in the mind, the individual all know, lift to request. Over over yue: this Ai Dai also." At this minute Ai Dai namely original way.
Early glasses within the image and item information not simply. Chinese background museum collection vivid paint the SMW numerous will landscapes maps "(illustrate Ming yongle nanjing city general public daily life scenes) possess a old man sporting eyeglasses. Plus the qing dynasty ZhaoYi says eyeglasses into China is within the Ming dynasty and Ming. Qing jiaqing many years glasses has gained reputation, ZhangZiQiu inside the door for all functions "cloud:" everybody myopia wear eyeglasses, distribute in depth process distinct. Far more give a visible gentle of skillful, obtain for all by of epigenetic." LiGuangTing distinct through the township speech XieYi "records, based on Chinese ancient glasses son unsightly when the twelve earthly branches bases to differentiate depth scale.
Considering that the 13th century human inventions since the lens, happen to be using crystal glass grinding lens, China has adopted within the crystal outside, and the utilization of man-made crystal. Then use glass lens. 1937 French invented a contact acrylic plastic spectacle lens, although not readily broken, but weak resolution. In 1954, France in based around the way the firm a project from producing plane cockpit material is motivated, thus invented the resin lenses, considering the fact that then, this lens will turn into the world's lens kingdom of sovereign, is still used nowadays.
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