Andover CorporationAndover 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.

Andover is 100% US-owned, and is ISO 9001:2008,  AS 9100:2009, AS9104A, and ITAR registered.

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Technical Articles

HYPERSPECTRAL IMAGING (Optical Components) Optical thin film bandpass filters are used to define the wavelength range to which each detector responds by allowing the transmission of only narrow range of wavelengths about the center wavelength... (View Full Article)
Spectroscopy Applications (Optical Components) Optical filter applications in spectroscopy utilize the ultraviolet through the infrared range of wavelengths (193 - 16000 nanometers). Within this range, the shorter wavelengths of light interact... (View Full Article)