IMAGE QUALITY FILTERS

Have demanding custom imaging requirements?

Image quality filters are ideal for applications that require high resolution, such as astronomical observations, video monitoring systems, high-resolution photography, and other imaging applications. To meet these demanding requirements, Andover Corporation has developed a line of custom Image Quality (IQ) filters using high-grade optical material that is both striation and inclusion-free. The surfaces are ground and polished to a transmitted wavefront of λ/4 per inch and parallel to 30 arc seconds or better. The internal coating positions are optimized and the exterior surfaces anti-reflection coated to eliminate multiple images and fringe patterns, and maximize energy throughput. For very high-resolution applications, we can also provide image quality filters with a transmitted wavefront of λ/10 and parallelism of 10 arc seconds. While commercial quality filters can have the same spectral characteristics as image quality filters, they are designed for use in instruments rather than imaging applications. 

ANTI- REFLECTIVE COATINGS

All Image Quality Filters include anti-reflective (AR) coatings on the exterior surfaces. AR coatings are an effective way to limit reflections while also improving optimal system performance. Andover Corporation manufactures a variety of anti-reflective coatings designed for high efficiency, mechanical durability, and environmental stability.

Contact our technical sales department to discuss your specific requirements.