Andover Image-Quality Filters

Image-quality optical filters are designed for applications that demand superior resolution and imaging precision. These filters use high-purity, striation-free optical materials and advanced coatings to minimize distortion and maximize clarity.

Each image-quality filter is characterized by three essential properties:

• Transmitted Wavefront: Typically λ/4 per inch or better, ensuring minimal distortion
• Parallelism: 30 arc seconds or better, maintaining precise image alignment
• Surface Quality: Precision-polished surfaces with optimized AR coatings to eliminate ghosting and maximize throughput

Andover Corporation's image-quality filters are manufactured using advanced polishing techniques and high-grade optical materials. By combining precision substrate preparation with optimized coating positions and anti-reflection treatments, we eliminate multiple reflections and fringe patterns that could compromise image quality. For applications demanding even higher performance, we can achieve transmitted wavefront quality of λ/10 and parallelism of 10 arc seconds.