Sapphire lenses and windows are optically clear, chemically inert, and transmit from the UV to 4.7 µm. They can be coated for >99% transmission. They have Mohs 9 hardness and can be supplied as lenses or windows, flat and stepped, concave or convex, and round or square, with mounting holes and slots.
Meller Optics
Providence, RI
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LFW Staff
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