Editing Bausch & Lomb (section)

===Expansion of production at the beginning of the 20th century===
With the growth of the US army, under President [[Theodore Roosevelt]] and the buildup of the naval fleet, Bausch & Lomb received the commission, through the supplier [[George N. Saegmuller|Saegmuller]], to manufacture high-precision lenses for optical measurement and founded a [[joint venture]] with Saegmuller. At the same time as this new expansion, a research department with five members was started to develop new products and improve old ones. A new alliance with the Zeiss company in Germany ensured competitive advantages for the three participants, Bausch & Lomb, Saegmuller and Zeiss, in terms of patent use and opening new markets.  In 1902, William Bausch, the son of the founder, developed a process to create the desired lens shape directly by casting molten glass. Previously, the glass parts for the lenses had to be separated, ground and polished in a complicated process, and this brought significant savings in time and materials.

The company produced the first optical-quality glass in America during the early to mid-1900s. By the year 1903 the company began manufacturing microscopes, binoculars, and [[camera shutter]]s.