CPC C04B 35/6455 (2013.01) [C04B 35/547 (2013.01); C04B 35/638 (2013.01); G02B 1/02 (2013.01); C04B 2235/3284 (2013.01); C04B 2235/446 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/656 (2013.01); C04B 2235/6562 (2013.01); C04B 2235/6567 (2013.01); C04B 2235/6581 (2013.01); C04B 2235/762 (2013.01); C04B 2235/786 (2013.01); C04B 2235/96 (2013.01); C04B 2235/9607 (2013.01); C04B 2235/9646 (2013.01); C04B 2235/9653 (2013.01); H04N 5/33 (2013.01)] | 17 Claims |
1. A sintered polycrystalline ceramic body comprising ZnS in a polymorphic form having a cubic structure and having the transmittance of at least 50% in a wavelength range of 0.7-12 μm for a 6 mm thickness, and a Vickers hardness of ≥180 kg/mm2.
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