Wollensak
Wollensak Optical was an American manufacturer of audio-visual products located in Rochester, New York. At the height of their popularity in the 1950s and 1960s, many brands of movie cameras came with a Wollensak Velostigmat lens. Wollensak reel-to-reel tape recorders were known for their construction, reliability, and value. Wollensak tape recorders were used for amateur home, school, and office recording. They were produced in both stereo and mono designs.
The company was founded in the 1890s by Andrew and John C. Wollensak to produce camera shutters and lenses. At its peak in the 1950s, it employed over 1000 people. The company had several owners, including Revere Camera Company and 3M Company. Wollensak ceased operation in 1972.