When was the bifocal lens invented?

1 Answer
Apr 7, 2018

Bifocal Glasses were thought to be older as 300 BC.The true developer is said to be Ben Franklin.

Explanation:

The first lens was invented by two Italians Alessandro Della and Alvino Degli Armati.

Original design or the modern design of the bifocal lens came from Ben Franklin in the year 1784 August.

After Ben made his first bifocal he wrote a text to his friend in which the original words were:-

"happy in the invention of double spectacles, which serving for distant objects as well as near ones, make my eyes as useful to me as ever they were"

**Source: www.ushistory.org/franklin/science/bifocals.htm**