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OPTICAL MOUSE WITH LIMITED WAVELENGTH OPTICS

  • US 20090153486A1
  • Filed: 12/18/2007
  • Published: 06/18/2009
  • Est. Priority Date: 12/18/2007
  • Status: Active Grant
First Claim
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1. An optical mouse, comprisinga light source configured to emit light having a wavelength in or near a blue region of a visible light spectrum toward a tracking surface;

  • an image sensor;

    an optical band pass filter disposed optically between the tracking surface and the image sensor and configured to pass the light having the wavelength in or near the blue region of the visible light spectrum emitted by the light source; and

    a controller configured to receive image data from the image sensor and to identify a tracking feature in the image data.

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