Optical Filter Manufacturer Company

Andover Corporation was established in 1976 with the purpose of designing and manufacturing high-quality optical filters and coatings. Over the years as the company has grown, the focus has remained on quality. Our current facility spans 44,000 square feet on 17 acres of land in Salem, NH.

Our facility is custom-designed and state-of-the-art, and includes automated coating, glass polishing, and fabrication equipment. Our testing capabilities are extensive, including both automated spectrophotometers for broadband spectral measurements, and ultra-high-resolution spectrophotometers for narrowband measurements. Our optical metrology lab features a custom-designed, computer-controlled tunable interferometer to measure transmitted wavefronts beyond the capabilities of a traditional laser interferometer.

We manufacture filters and coatings for a wide variety of applications, including medical instrumentation, fluorescence studies, machine vision, agricultural imaging, ground-based and space-borne astronomical observation, telecommunications, military and civilian surveillance systems, and defense targeting systems.

Our Capabilities

Andover is a vertically integrated manufacturer of thin film optical coatings and assemblies allowing us the flexibility to control the design and manufacturing process, ensure consistent quality, and meet demanding lead times. 

• Fully-automated systems for excellent repeatability and rapid turnaround

• Continuously updated manufacturing processes

• Products that far exceed industry standards for quality

Markets We Serve

Andover serves a diverse array of demanding markets ranging from Aerospace and Defense, to Medical, Astronomy and Spaceborne platforms. Applications include surveillance and targeting, environmental monitoring, and fluorescence studies, among a broad range of other studies, disciplines, and industries. Our filters operate across the globe, through space, air, ocean, and land. Andover Corporation’s tradition of high-quality customer service, custom solutions, proprietary equipment and coating experience will meet your requirements and exceed your expectations.