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2. Luneburg lens - Wikipedia

   en.wikipedia.org/wiki/Luneburg_lens

   A Luneburg lens (original German Lüneburg lens) is a spherically symmetric gradient-index lens. A typical Luneburg lens's refractive index n decreases radially from the center to the outer surface. They can be made for use with electromagnetic radiation from visible light to radio waves . For certain index profiles, the lens will form perfect ...

3. Oakley, Inc. - Wikipedia

   en.wikipedia.org/wiki/Oakley,_Inc.

   Oakley, Inc. is an American company headquartered in Foothill Ranch, California, which is an autonomous subsidiary of Luxottica.The company designs, develops and manufactures sports performance equipment and lifestyle pieces including sunglasses, safety glasses, eyeglasses, sports visors, ski/snowboard goggles, watches, apparel, backpacks, shoes, optical frames, and other accessories.

4. JLENS - Wikipedia

   en.wikipedia.org/wiki/JLENS

   Each aerostat utilizes a different radar system—one has a VHF-band surveillance radar and the other an X-band fire-control radar. JLENS is designed to provide 24/7, 360-degree coverage extending 340 miles (300 nmi; 550 km). The surveillance radar scans in all directions to pick up targets, then the targeting radar looks only in a certain ...

5. AOL Mail

   mail.aol.com

   You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

6. AN/SPY-1 - Wikipedia

   en.wikipedia.org/wiki/AN/SPY-1

   The AN/SPY-1[ a] is a United States Navy 3D radar system manufactured by Lockheed Martin. The array is a passive electronically scanned system and a key component of the Aegis Combat System. The system is computer controlled and uses four complementary antennas to provide 360-degree coverage. The system was first installed in 1973 on USS Norton ...

7. Optical landing system - Wikipedia

   en.wikipedia.org/wiki/Optical_landing_system

   In its developed form, the OLS consists of a horizontal row of green lights, used as a reference, and a column of vertical lights. The vertical lights signal whether the aircraft is too high, too low, or at the correct altitude as the pilot descends the glide slope towards the carrier's deck. Other lights give various commands and can be used ...