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Pen-like optical input device

  • US 20110242063A1
  • Filed: 03/30/2011
  • Published: 10/06/2011
  • Est. Priority Date: 03/31/2010
  • Status: Active Grant
First Claim
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1. A pen-like optical input device, comprising:

  • a body;

    a light source, disposed in the body, wherein the light source emits a light ray to the outside of the body, and a reflected light ray is generated outside the body;

    a light sensing unit, disposed in the body, wherein the light sensing unit receives the reflected light ray; and

    a lens, disposed in the body, wherein the reflected light ray is refracted to the light sensing unit through the lens;

    wherein the light sensing unit comprises a light receiving surface on a side facing the lens;

    a normal of the light receiving surface inclines to an optical axis of the lens, a first angle exists between the normal of the light receiving surface and the optical axis of the lens, and a degree of the first angle is in direct proportion to a magnification of the lens.

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