Our Facility

Where Passion Meets Precision

State-of-the-Art Optical Manufacturing

Engineering Tomorrow's Solutions Today

Since 1976, Andover Corporation has set industry standards in optical filters and coatings from our comprehensive 44,000-square-foot manufacturing facility in Salem, New Hampshire. Our state-of-the-art facility reflects decades of continuous investment in advanced manufacturing technology, combining custom-designed automation with precision engineering expertise to stay at the forefront of optical innovation.

World-Class Manufacturing and Testing Capabilities

From medical instrumentation to space-borne imaging systems, our vertically integrated facility enables Andover Corporation to deliver superior optical filters, coatings, and assemblies across a broad range of industries. By maintaining complete control over every phase of production — from raw material preparation through final optical metrology — we achieve consistent quality, accelerated lead times, and reliable performance for even the most demanding applications.

Manufacturing Capabilities

Multiple coating chambers featuring magnetron sputtering, ion-assisted e-beam deposition, and resistance evaporation technologies.
Precision optical polishing achieving flatness up to λ/10 wave and parallelism of 5 arc seconds or better.
Fully automated CNC equipment for precise optical component fabrication from 2mm to 350mm.

Innovation Through Research and Development

Advancing Coating Technologies to Meet Tomorrow's Challenges

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Research & Development

Our in-house engineering team continuously develops new coating technologies and processes to meet emerging industry needs. Recent expansion has added a third coating room, enabling:
  • Greater layer coatings capabilities
  • Steeper edge filters
  • Higher optical densities (OD)
  • Faster turnaround times
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Quality Assurance

Every phase of production is monitored under strict quality control measures:
  • Automated measurement systems
  • Computer-controlled coating chambers
  • Comprehensive documentation
  • Rigorous testing protocols
  • Full material traceability

Frequently Asked Questions

Andover Insights & Innovations

Discovering new possibilities in optical filtering

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BEAM: Breakthroughs – When Precision Meets the Battlefield

How Andover's Dual-Band Optical Filters Power the Apache AH-64's Advanced Targeting Systems Part of our BEAM (Breakthroughs, Engineering, And Minds)...
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BEAM Spotlight Series: Dave Litwinovich — Three Decades of Engineering Excellence

As part of our BEAM Spotlight Series (BEAM: Engineering), we're proud to highlight the people behind the precision-those who quietly push...
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Building the Future of Photonics: An Interview with Dr. Bárbara Buades of MEETOPTICS

t Andover Corporation, we're always inspired by innovators who are reshaping the future of photonics. We recently had the chance...

Contact Our Team

Ready to discuss your optical needs? Whether you're looking for a quote or have technical questions, our expert team is here to help guide you to the perfect solution.