In the early days of instrumental optics, the know-how of lens making was shrouded in secrecy. A remarkable exception can be found in a letter from 1643, in which the Italian lens-maker Vangelista Torricelli gives his correspondent directions on optical shop practices.
Log in or Become a member to view the full text of this article.
This article may be available for purchase via the search at Optica Publishing Group.
Optica Members get the full text of Optics & Photonics News, plus a variety of other member benefits.