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Encoder with a light emitting editing wheel

  • US 5,384,460 A
  • Filed: 11/03/1993
  • Issued: 01/24/1995
  • Est. Priority Date: 11/03/1993
  • Status: Expired due to Term
First Claim
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1. An encoder with a light emitting editing wheel, comprisingan editing wheel defining a wheel body and a hole in its middle, said editing wheel being mounted on a shaft member and being actuated to rotate thereon via suitable transmission means, a plurality of light focusing means being disposed along the circumference of said editing wheel, a light receiving means being provided radially on said wheel body, said light focusing means being interconnected with said light receiving means to focus light transmitted from said light receiving means into a plurality of light points;

  • a light source disposed at a perpendicular position above said editing wheel, said light source sending said light to said light receiving means of said editing wheel; and

    a sensor means being disposed adjacent to said light focusing means, a pair of light detecting means being provided at said sensor means thereon, said light detecting means being capable of sending an active signal as a light point of said plurality of light points is received thereon.

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