CEAC-2022-09-September
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New Products<br />
Large Sapphire Windows Protect Sensors<br />
From High-Speed Particulates<br />
Custom-fabricated large sapphire windows for use in protecting<br />
electronic sensors and vison systems on the outboard<br />
surface of aircraft and drones have been introduced by Meller<br />
Optics, Inc. of Providence, R.I.<br />
Meller Large Sapphire Windows exhibit Mohs 9 hardness<br />
which is second only to diamond and are optically clear to<br />
provide a protective outer surface for electronic sensors and<br />
vison systems. Fabricated in different shapes and sizes up to<br />
10" dia., depending upon the diameter to thickness aspect<br />
ratio, they feature transmission from the UV to IR (270 nm to<br />
4.7 microns).<br />
are also offered.<br />
Meller Large Sapphire Windows are priced according to configuration<br />
and quantit . Price quotations are available upon<br />
request.<br />
Exhibiting flatness to 1/10th wave in the visible and less<br />
than 2 arc sec. in/in. parallelism with finishes from 60-40 to<br />
40-20 scratch-dig, depending upon size and construction,<br />
Meller Large Sapphire Windows can withstand fast moving<br />
dirt, sand, water, and most chemicals. Sapphire domes and<br />
hyper-hemispherical sapphire domes for 360-degree viewing<br />
Meller Optics’ custom-fabricated large sapphire windows recently introduced<br />
a new line of large sapphire windows for use in aircraft and drones.<br />
60<br />
| Chief Engineer<br />
<strong>09</strong>22 issue.indd 60 8/22/22 3:28 PM
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