Here’s a brief history of Wollensak
taken from: A History of The Rochester, NY Camera
and Lens Companies
by Rudolf Kingslake
"The second company to branch off from Bausch and Lomb
was Wollensak. Andrew Wollensak was first employed as a machinist
by Bausch and Lomb in 1882, and became a foreman the following
year. He helped Edward Bausch with the design of the Iris Diaphragm
shutter in 1890, and probably worked on other shutters as well.
In 1899 he and his brother John decided to establish a new company
for the purpose of manufacturing a line of high quality shutters
which could be sold at a reasonable price. The brothers managed
to obtain financial help from Stephen Rauber, former president
of the Union Brewing Company in North Clinton Avenue, and the
new company, Rauber and Wollensak, was established in a building
at 280 Central Avenue. Mr. Rauber died in 1901, and the name
of the firm was then changed to the Wollensak Optical Company.
The following year Wollensak commenced the production of lenses
as well as shutters. The famous 'Optimo' shutter was designed
by Andrew Wollensak in 1909, and was sold extensively until 1930.
The company purchased the Rochester Lens Company in 1905, thereby
obtaining the right to manufacture the 'Royal' anastigmat line
developed by that company.