Benjamin Franklin invented bifocals out of diplomatic necessity. | The History Page

Benjamin Franklin was one of historys greatest inventors who created bifocals, the lightning rod and swim fins but never patented any of his discoveries. He believed that seeking patents would lead to disputes and bitterness. Instead, Franklin chose to share his inventions freely with the public, aiming to improve life for everyone. His approach reflected a commitment to the free exchange of knowledge and a quiet generosity that favored societal progress over personal gain. | The History Page

Benjamin Franklin invented bifocals not for convenience but for high-stakes diplomacy. | History Vault

Let's take a look at the where's, why's and how's of measuring segment heights for lined bifocal and trifocal lenses. | Laramy-K OpticianWorks