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Optical Mouse Saves Space in Cellphones
Chris writes "Researchers at Philips have integrated a space-saving optical mouse into a mobile phone for the first time.
Dutch researchers at the Philips Center for Industrial Technology have developed a compact, optical interface for portable electronic equipment. The team says that its new input gadget can be easily integrated in cellphones, laptops and PDAs, providing an space-efficient alternative to a mechanical trackball or touch-pad for example.
The device is made up of a low-power red laser diode and a detector placed beneath a lens. Light from the 650 nm laser is focused on an object, such as a fingertip, creating an external cavity. It is not necessary to touch the lens. A small portion of this light is then reflected back and mixes with the light within the internal laser cavity."
Can we attach them to sharks heads?
Fascism starts when the efficiency of the government becomes more important than the rights of the people.