Optomechanical mouse

Bottom of optical-mechanical and optical computer mouseThe optical-mechanical or optomechanical mouse consists of a ball that rolls one of two wheels inside the mouse. Each wheel contains a circle of holes or notches, allowing an LED light to shine through and be detected by a sensor. As the wheel spins these lights represent an X or Y axis for the mouse pointer on your screen. This mouse is more accurate than a mechanical mouse that uses only wheels and rollers, however, is not as good as an optical mouse.

Related pages

Also see: Mechanical mouse, Mouse terms, Optical mouse