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Sapphire, Ruby Balls

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Meller Optics Inc.
Meller Optics Inc. has announced Sapphire and Ruby Balls for short focal length lenses for microair vehicles or fly-sized insect drones used in military surveillance. The devices feature 9 Moh hardness, with 42-in. and metric sizes from 0.1 mm to 0.5-in. diameters with 0.000025-in. sphericity and ±0.0001-in. basic diameter tolerance. Suitable for fabricating short focal length micro lenses, they can be precision ground into planoconvex lenses with surface finishes to 80-20 scratch-dig. The devices are unaffected by fast moving dirt and impervious to most chemicals, solvents...See full product

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