Dual-Band Infrared Anti-Reflection Coatings

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Current and next-generation infrared (IR) imaging systems require simultaneous performance at the MWIR (mid-wave, typically 3-5μm) and LWIR (long-wave, typically 8-12μm or 7.5-13.5μm) spectral bands. Dual-band atmospheric transmission performance is challenged to equal or outperform the classic single wavelength band designs. As IR imaging instruments utilize many transmissive elements in the optical path, maximizing per-element throughput is critical to achieve high-levels of system performance.