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MOVEMENT DETECTION DEVICE CAPABLE OF DETECTING THREE-DIMENSIONAL MOTIONS

  • US 20160139267A1
  • Filed: 01/26/2016
  • Published: 05/19/2016
  • Est. Priority Date: 01/11/2010
  • Status: Active Grant
First Claim
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1. A movement detection device configured to detect a movement of an object in a space range, the movement detection device comprising:

  • a light source configured to emit light along an optical axis;

    a light guiding element;

    at least two light sensing elements laid out on a surface of a same substrate and having an offset therebetween along a first direction such that the object, when moving in the space range, reflects the light from the light source sequentially to the light sensing elements through the light guiding element; and

    a processing unit configured toidentify the movement of the object along the first direction according to a sequence in which the light sensing elements detect light reflected by the object, andidentify a motion of the object along the optical axis according to an intensity variation of the light reflected by the object and detected by the light sensing elements.

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