ISP Optics Corp. of Irvington, N.Y., has augmented its diamond-turning operation by relocating to a temperature-controlled facility and adding two Nanotech 250 UPL single-point diamond-turning lathes. The company manufactures infrared optics, including windows, lenses, domes, prisms, fibers and micro-optics from materials such as sapphire, crystal quartz and fused silica.