Dual-Band Filters

Andover Corporation manufactures advanced dual-band filters that provide precision control across two spectral ranges in a single optical element. Designed for use at key laser wavelengths such as 1064 nm and 1550 nm, our filters combine high-transmission thin-film coatings with rugged, application-ready construction.

Whether you require a standard solution or a fully customized design, our dual-band optical filters support both bandpass and anti-reflective (AR) coatings—engineered to meet the demands of multi-wavelength optical systems.

Key Capabilities:

A spectral data curve graph for a dual-bandpass optical filter.

• Dual-band AR and Bandpass designs for two distinct wavelength ranges

• Thin-film coatings optimized for high transmission and low reflection

• Fully in-house design, coating, and fabrication capabilities

• Rugged construction for stability in high-power and harsh environments

• Customizable to non-standard wavelength combinations

Applications:

• Laser-Based Medical Equipment

• Aerospace and Defense Optics

• Industrial Laser Processing

• LiDAR and Rangefinding Systems

• Multi-spectral Imaging Platforms

Andover’s vertically integrated manufacturing process, AS9100-certified quality system, and coating expertise ensure consistent performance, rapid turnaround, and support for even your most challenging dual-band filter requirements.