Thursday, September 25, 2025
Andover CorporationAndover Corporation, founded in 1976 and headquartered in Salem, NH, is a leading manufacturer of high-quality optical filters and coatings. With full vertical integration, advanced coating technologies (magnetron sputtering, e-beam with ion assist, resistance evaporation), and a 44,000 ft² facility, Andover serves industries from aerospace and defense to medical devices, astronomy, and biotechnology. Their catalog includes bandpass, infrared, neutral density, dichroic, and edge filters, supported by extensive in-house engineering, metrology, and ISO9001/AS9100 certified quality systems. Known for precision, durability, and custom craftsmanship, Andover provides both off-the-shelf and tailored solutions with short lead times.