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Google glass is an optical head-mounted display or basically a headset resembling ordinary eyeglasses with the lens switched with a head-up display. The device displays information in a smartphone-like hands-free layout with wearers communicating with the internet through usual language voice commands.
The original version of Google Glass 2.0, termed as Google Explorer used a liquid crystal on silicon, field sequential color system and a LED illuminated display. This LED system is P-polarized and then shines via the in-coupling polarizing beam splitter to the liquid crystal on silicon panel. It is integrated with a camera having an ability to take photos and record 720p high definition video. A touch pad is also integrated on the side of the device, allowing users to control it by swiping via a timeline-like interface displayed on the screen.