Andovers State-of-the-Art Optical Solutions
Building Tomorrow's Optical Solutions Today
Since 1976, Andover Corporation has set industry standards in optical filters and coatings from our comprehensive 44,000-square-foot facility in Salem, New Hampshire. Our state-of-the-art facility represents decades of continuous investment in advanced manufacturing capabilities, combining custom-designed automation with precision engineering expertise to maintain our position at the forefront of optical technology.
World-Class Capabilities:
- Custom-designed automated coating chambers and fabrication systems
- Advanced optical metrology lab with custom interferometry testing
- Complete in-house polishing and precision glass fabrication
- Extensive quality control and measurement facilities
- State-of-the-art spectrophotometry for broadband and narrowband analysis
From medical instrumentation to space-borne systems, our facility's integrated design and manufacturing capabilities enable us to deliver superior optical solutions across diverse industries while maintaining the highest standards of quality and precision. Our vertically integrated approach ensures complete control over the manufacturing process, from raw material processing to final quality control, resulting in industry-leading turnaround times and consistent, reliable performance for even the most demanding applications.
Quality Validation Suite
End-to-end validation from design to deployment
Metrology Lab
Our advanced metrology lab features custom-designed testing equipment and high-precision measurement capabilities to ensure optical performance meets the most demanding specifications.
- Custom-designed tunable interferometer
- Automated spectrophotometers for broadband measurements
- Ultra-high-resolution spectrophotometers for narrowband measurements
- Wavefront measurement capabilities to 1/20th wave
Environmental Testing
Our comprehensive environmental testing facilities allow us to validate product performance across extreme conditions, from cryogenic temperatures to elevated thermal environments.
- Temperature testing from -192°C to +500°C
- Humidity cycling chambers
- Custom-designed inclusion tester
- Cryogenic testing capabilities to 77°K
Innovation Through Research and Development
Advancing Coating Technologies to Meet Tomorrow's Challenges
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
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
Andover Insights & Innovations
Discovering new possibilities in optical filtering

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Contact Our Team
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