Questions and answers:
- What conditions are Meller sapphire windows designed to withstand? They are designed to endure high temperatures to 1,000 degrees Celsius, pressures to 10,000 pounds per square inch, harsh chemicals, and hits from fast-moving particles.
- What makes sapphire suitable for aerospace and military optics? Sapphire has a Mohs hardness of 9 (second only to diamond), chemical resistance, and high optical clarity for protecting sensors and optics.
- What optical performance do Meller sapphire windows offer? They transmit as much as 85 percent of light from UV to IR, and can be coated for more than 99 percent transmission efficiency.
PROVIDENCE, R.I. – Meller Optics Inc. in Providence, R.I., is introducing custom fabricated sapphire windows, lenses, and domes for aerospace and military applications that require extreme hardness, chemical resistance, and the ability to withstand extreme temperatures.
These sapphire windows, lenses, and domes exhibit are for applications subject to fast-moving particles, harsh chemicals, temperatures to 1,000 degrees Celsius, and pressures to 10,000 pounds per square inch.
Meller sapphire windows offer Mohs 9 hardness -- second only to diamond -- combined with high clarity for protecting sensors and optics in guidance and vision systems.
Enhanced light transmission
Providing as much as 85 percent transmission from the ultraviolet to infrared spectra, Meller sapphire windows can include A/R coatings for enhancing transmission to better than 99 percent.
Offered in sizes from 1/4 to 10 inches in diameter, and 1/2 millimeters to 1 thickness, flatness can be held to 0.5 fringes of HeNe, parallelism from 20 to 2 arc/secs., and they have surface finishes from 60-40 to 40-20 scratch-dig.
For more information contact Meller Optics online at www.melleroptics.com.
