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Large Sapphire Windows

Photonics Spectra
Mar 2012
Meller Optics Inc.Request Info
PROVIDENCE, R. I., Dec. 28, 2011 — Custom-fabricated sapphire windows and lenses that transmit from the UV to the IR and are impervious to most chemicals, water, and fast-moving dirt and sand are available from Meller Optics Inc.

The sapphire optics can be produced in sizes up to 10 in. in diameter, depending upon the diameter-to-thickness aspect ratio. Featuring transmission from 270 nm to 4.7 μm, they are clear as glass, second only to diamond in hardness (Moh 9), and can withstand temperatures up to 1000 °C.

Suitable for use as protective front-surface optics and as viewports, they provide flatness to λ/10 wave in the visible and <2-arcsec in./in. parallelism with finishes from 60-40 to 40-20 scratch-dig, depending upon size and construction.

Applications include viewing optics in cameras, weapons and refractometers, and machine inspection windows.


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