Microsoft went the extra mile to insure its display was one of the best in the class of those few tablets that use optical bonding of the display surface.

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Data are beamed back to the surface by electromagnetic pulse or optical fiber.

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An optical mouse uses a beam of light and an optical sensor to detect movement over a surface -- there are no moving parts.

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Pyron uses an acrylic concentrating lens, which focuses the equivalent of the light from 6, 500 suns on a small optical device, which then spreads it across the surface of the solar cell.

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Sequential optical images of high spatial resolution were used for the first time to derive surface ice velocities of Glaciar Upsala, a fast-moving fresh-water calving glacier in southern Patagonia.

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All-optical switches use micromirrors, which were originally developed to bounce laser beams around the surface of a silicon chip.

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Additionally, to thoroughly eliminate ghosting and lens flares, reflectivity was kept to half of the previous value at a wavelength of 450 to 650 nm, thanks to the lens surface treated with the Olympus-original ZERO (ZUIKO Extra-low Reflection Optical) coating.

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That would give it a resolution of a few thousandths of an arc-second enough, were this an optical rather than a radio telescope, to see a boulder just a few metres across on the surface of the moon.

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