Sapphire Optical Domes
Meller Optics, Inc.
PROVIDENCE, R.I., Dec. 11, 2013 — Meller Optics Inc. has introduced sapphire optical domes for protecting guidance systems, sensors and other devices in harsh airborne and subsea environments.
The domes feature Moh 9 hardness and provide up to 85 percent transmission uncoated in the UV and IR, and up to 99 percent transmission when antireflection-coated on two sides. They can withstand pressure up to 10,000 psi and temperatures up to 1000 °C, and are unaffected by fast-moving dirt, sand, saltwater or chemicals.
Available in sizes up to 6 in. in outside diameter, the domes can incorporate steps and profiles for mounting. They offer 160° maximum included angles to extend the viewing angle of missile-guidance systems, and they exhibit surface accuracy to <1 fringe at 633 nm and finishes to 20-10 scratch-dig per MIL-PRF-13830.
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