 01.06.2011 TechSpec plano-convex lenses from Edmund Optics feature precision diamond-turned surfaces, making them suitable for a variety of infrared applications, including thermal imaging, IR spectroscopy, and remote sensing. Each lens is manufactured from germanium, a rugged, durable material with a broad transmission range and a high index of refraction. Germanium has a transmission range of 2 µm to 16 µm and is opaque in the visible part of the spectrum. The material is inert to air, water, alkalis, and all acids, with the exception of nitric acid. It provides a density of 5.33 g/cm3and a Knoop hardness of 780, nearly twice that of magnesium fluoride.
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