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Sapphire, Ruby Balls

Photonics Spectra
May 2016
Meller Optics Inc.Request Info
PROVIDENCE, R.I. — Sapphire and Ruby BallsMeller 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 and detergents. Crafted into lenses for microair vehicle applications, the devices are available antireflection coated and provide 85 to 98 percent typical transmission, depending upon the application. Applications include bearings, check valves, stylus tips and fiber optic lens systems.


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