Tower Optical Corporation is a premier manufacturer and producer of high quality precision optics and assemblies. Tower's stock and "build to spec" custom products are used in leading-edge photonics technology, electro-optics, lasers, telecommunications, medical instruments, optical imaging, machine vision and optical computing. Products include crystal quartz Waveplates and achromatic Waveplates (retarders) lenses, filters, polarizers, prisms, beamsplitters, windows, optical flats and mirrors.