Valley Design is an ISO 9001:2015 certified manufacturer of stock and custom wafers, substrates, windows, discs, precision shims, spacers and washers, flat optics, beamsplitters, polarizers, lenses, wedges, waveguides, subassemblies and other components. Since 1975 we have been recognized as an industry leader in advanced materials processing as providers of precision lapping and polishing, CNC machining, dicing, backgrinding, ultrasonic hole drilling and other precision machining services. With