Who Invented Bifocals

Who Invented Bifocals

Who Invented Bifocals – so how did it happen?

Who Invented Bifocals : Bifocals are becoming a bigger part of everyday life of a person, who cannot see without using this device. Generally speaking, bifocals are eyeglasses, which have two different optical powers. Mostly, people who are diagnosed with presbyopia or myopia are wearing such eyeglasses. Therefore, who invented bifocals, which became a really helpful device for those, who cannot see clearly? It was invented by a scientist, who is considered as one of the greatest scientists of all time, Benjamin Franklin.
However, there are some sources claiming that before the invention by Benjamin Franklin was done, there were some other scientists, who were experimenting with devices similar to the modern bifocals. Benjamin Franklin was stated to be the real inventor of bifocals by the Gazette of the United States, which also claimed that he might have invented it 50 years earlier than everybody thought. It is also generally known that a lot of inventions, which we still use today, were developed by more than one single person and the case of bifocals might be an example of it, but it is clearly known that Benjamin Franklin was part of it.

In 1824, the word ‘bifocals’ was used for the first time by inventor John Isaac Hawkins, who also invented trifocal lenses. In 1955, another scientist, named Irving Rips of Younger Optics, developed the first so-called invisible bifocals, which started the development of progressive lenses. The bifocals that were created by Benjamin Franklin had the most convex lenses in the lower part of the frame, whereas the least convex lenses were placed in the upper part of the frame. Until the 20th century, two lenses were divided into halves and combined in the frame’s rim. This technique had some drawbacks, such as spectacles being quite fragile and causing complications.
In the end of the 19th century, Louis de Wecker created a method to fuse the parts of the lenses together. However, this technique also has some drawbacks as bifocals could cause dizziness and headaches. Also, it was quite hard to get used to them as the person who used bifocals for reading usually moved his head or the material that he was reading rather than moving his eyes.
Talking more about the man, who invented bifocals, Benjamin Franklin developed many other things, which became revolutionary. He contributed to the invention of electricity, population studies, the North Atlantic Ocean circulation patterns and worked in some other fields.
In addition to these interests, Benjamin Franklin enjoyed music and played the violin, the guitar and the harp. He was also a music composer. Benjamin Franklin even invented an improved glass harmonica. In his glass harmonica version, the player had to keep his fingers steady, whereas the glasses were rotating on a shaft. This development proved to be a huge success in Europe, as well. Furthermore, Benjamin Franklin popularized the chess game. He even wrote an essay regarding the subject of chess, called “The Morals of Chess”, which was printed in Columbian magazine. This essay has been translated into quite a few languages.


Who Invented Bifocals

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