World's First Eyelasses |
Today's Eyeglasses |
Salvino D. Armate |
“Salvino D. Armate” probably invented eyeglasses in around 1285, though various sources suggest an earlier origin. He shared the invention of his new device with Allesandro della Spina, an Italian monk, who made it public and is credited with inventing eyeglasses. The first eyeglasses had frames made of metal or bone and had lenses made out of quartz because the '' opticians '' of that time did not have the capabilities of producing flawless lenses in glass.
In the 14th century, Venetian craftsmen were making "disks
for the eyes"'. Italians gave these glass disks that were finely ground
the name lenses because they were similar in shape to lentil beans. The
earliest lenses were convex, the bulged outward in the middle, and they were
used to correct far-sightedness.
By the fifteenth century, spectacles had found their way to China.
Early eyeglasses had glass lenses set into heavy frames of wood,
lead or copper. Natural materials of leather, bone and horn were later used for
production of frames. In the early seventeenth century, lighter frames of steel
were invented. The modern style of eyeglasses frame, which could be placed
over the ears and nose, was invented in 1727 by British optician "Edward
Scarlett".
Philosopher Benjamin Franklin |
Sir George Biddle Airy, an English astronomer and mathematician,
invented glasses to correct astigmatism in 1827 which were meant to be held by
hand. Later glasses were designed to be held in place by ribbon or by exerting
pressure on the bridge of the nose, such as with pince-nez.
Construction of frames also improved over the centuries, and today
they are made in wide array of styles and designs. Frames are generally
produced of metal or plastic, and lenses are produced of glass or plastic.
In 1955 the unbreakable lenses were invented and in 1971 a new lens
were developed which combined the properties of plastic with glass.
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