SEPTEMBER 17, 2009--New IR neutral density filters are spectrally flat over a wavelength range of 2-14 µm. Made from precision germanium substrate, the filters are designed for thermal and medical imaging, with a broad spectral range that makes them suitable for eliminating hot spots in thermal images or attenuating a variety of IR laser sources, including CO2 and IR diode and quantum cascade lasers. The filters achieve attenuation via a metal alloy coating, which uses a combination of absorption and reflection to reach the stated transmittance value.
Edmund Optics
Barrington, NJ, USA
www.edmundoptics.com
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Courtesy of Illinois Institute of Technology
