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Optical Sensing Technology

Optical (Camera) Sensor Materials Glass substrate, line scanning optical sensors, lighting strips Principle of Operation.

  • Miniature cameras are positioned in the top two corners of the substrate.
  • Illuminated border or reflective borders on the opposing three sides project a uniform field of infrared light slightly above the glass surface.
  • Touch occurs when a finger or object block the light from the cameras.
  • The controller processes the optical information and calculates the X,Y coordinates.