Apparatus equipped with an optical keyboard and optical input device

Apparatus equipped with an optical keyboard and optical input device

  • CN 1,678,974 A
  • Filed: 08/08/2003
  • Published: 10/05/2005
  • Est. Priority Date: 08/29/2002
  • Status: Active Grant
First Claim
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1. one kind comprises by the optical input device of mobile object control and the equipment of optical keyboard, this input media comprises at least one optical sensor unit, this optical sensor unit comprises that the measuring beam radiation that is used to provide the diode laser of measuring beam and is used for being reflected by object converts the switching device of electronic signal to, this switching device is to be constituted by laser cavity and the measuring element that is used for the variation at work of Laser Measurement device cavity, this variation is to cause owing to the light wave in the reflection measurement light beam radiation that enters laser cavity once more and this cavity interferes, moving of object represented in this variation, it is characterized in that the light path of this measuring beam from this diode laser to forms extends through the photoconduction of optical keyboard.

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