"(BBC 16 May 2012) Search giant Google has patented the design of its augmented-reality glasses, known as Project Glass.
Three patents for a "wearable display device" with characteristics of the much-talked about futuristic glasses were submitted last autumn.
The patents reference such functions as displaying data in front of the wearer's eyes and playing audio.
In April, Google revealed details of its research into the glasses and showed a demo video of a prototype.
The patents show images of different versions of augmented reality glasses, some with lenses and some without.
Google is working on the project in its research lab, Google X.
The prototypes are currently being tested by the firm's executives, including Sergey Brin and Vic Gundotra.
The demo video showed science fiction-like glasses equipped with a microphone and partly transparent tiny screen right above the user's right eye. . ."